CN1052939A - Conditioner - Google Patents

Abstract

The present invention relates to an air conditioning device with a refrigerating cycle circuit. By setting the first to fifth bypasses on this circuit, the three-way switching valve is switched and the fourth bypass is disconnected for defrosting operation. In addition, it relates to an independently installed Two refrigerating cycle circuits, the air conditioning device that sends air from the common blower to the indoor or outdoor heat exchangers of these circuits, by setting the 1st to 7th bypasses on these circuits respectively, the three-way switching valve of one side circuit is switched, The on-off valve of the other side circuit is opened to perform defrosting operation, which can achieve significant effects such as improving the working capacity of the compressor and enabling defrosting operation in a short time.

Description

Conditioner

The present invention relates to adopt that freeze in the freeze cycle loop, the improvement of the conditioner of warming operation.

This type of traditional conditioner, for＜heat pump practical design and application thereof the structure shown in P.122 Fig. 4 .12 of one book.Now this is done simple declaration with Fig. 9,1 is compressor among the figure, 2 is the four-way switching valve, 3 is outdoor heat converter, 4,5 be respectively the 1st, the 2nd throttling arrangement that when heating, refrigerating operaton, works as expansion mechanism, 6 is indoor heat converter, and 7 is storage heater, constitutes the freeze cycle loop by with pipe arrangement these being connected successively.In addition, 8,9 for respectively to indoor, outdoor heat exchanger 6,3 indoor, the outside pressure fans of blowing, 4a in addition, 4b is for the 1st decompressor (capillary) that constitutes the 1st throttling arrangement and make it become bypass to be arranged on the 1st non-return valve in the loop, and 5a, 5b are respectively the 2nd decompressor (capillary) of formation the 2nd throttling arrangement 5 and make it become bypass and be arranged on the 2nd non-return valve in the loop.

In the conditioner that constitutes like this, when refrigerating operaton (among the figure, represent the flow of refrigerant direction with the heavy line arrow), make the high-temperature high-pressure gas refrigerant of discharging pass through the four-way switching valve from compressor 1, carry out heat exchange at outdoor heat converter 3 with the outdoor air that outdoor draft fan 9 is sent here, thereby make the gas refrigerant condensation liquefaction, and constitute the 1st non-return valve 4b make the bypass by being arranged in the 1st throttling arrangement 4 one sides and be imported into the 2nd decompressor 5a one side that constitutes the 2nd throttling arrangement 5 and obtain decompression and become low temperature low pressure liquid refrigerants.Thereafter, make this liquid refrigerant enter indoor side heat exchanger 6, carry out heat exchange with the room air of sending here with indoor pressure fan 8, when making room air obtain cooling off, make the liquid refrigerant evaporates vaporization in view of the above, freeze cycle when turning back to the refrigeration of compressor 1 by four-way switching valve 2 and storage heater 7, after, this cold-producing medium constantly liquefies repeatedly successively and vaporizes in above-mentioned freeze cycle loop.

On the other hand, when heating operation (among the figure, represent refrigerant flow direction with the fine line arrow), make the four-way switching valve 2 of high-temperature high-pressure gas refrigerant by having changed to heating operation of discharging from compressor 1, enter indoor heat converter 6, carry out heat exchange with the room air of sending here with indoor blower 8, when making room air obtain heating, and therefore make the gas refrigerant condensation liquefaction.And make this liquid refrigerant be depressurized and become low temperature low pressure liquid refrigerants by making the 2nd throttling arrangement 5 become the 1st decompressor 4a that the 2nd non-return valve 5b guiding in the loop of bypass constitutes the 1st throttling arrangement 4.Thereafter, make liquid refrigerant streams go into outdoor heat converter 3, carry out heat exchange with the outdoor air of sending here with outdoor draft fan 9, heat absorption from outdoor air and when making outdoor air obtain cooling off, therefore make the liquid refrigerant evaporates vaporization, and by four-way switching valve 2, storage heater 7 returns compressor 1, thereby constitutes the freeze cycle when heating.

In addition, when such heating operation is proceeded, in the low occasion of for example outside air temperature, frosting gradually on outdoor heat converter 3.When such frosting becomes for a long time, heat exchanger effectiveness is degenerated, because caloric receptivity reduces from outdoor air, and the heating capacity of conditioner is significantly descended.Therefore, at this moment be necessary to defrost.Such Defrost operation, it is formed as document＜heat pump practical design and application thereof〉P.121 shown in, now describe with Fig. 2, when carrying out such Defrost operation (the with dashed lines arrow is represented refrigerant flow direction among the figure), the four-way switching valve 2 inlet chamber outer heat-exchangers 3 of high-temperature high-pressure refrigerant that friend's compressor 1 is discharged by having changed to refrigerating operaton from heating operation.And, outdoor draft fan 9 is shut down.Make in these outdoor heat exchange 3 lip-deep frost melts with the high-temperature gas cold-producing medium thereby constitute, make this condensation of refrigerant liquefaction, and become the 1st non-return valve 4b of bypass by the 1st throttling arrangement 4, make it obtain reducing pressure and becoming low temperature low pressure liquid refrigerants with the 2nd decompressor 5a that constitutes the 2nd throttling arrangement 5, enter indoor heat converter 6, next make it return the freeze cycle operation of compressor 1 by four-way switching valve 2 and storage heater 7.

The refrigerant circulation loop figure of Figure 10 this type of traditional conditioner that to be expression blow to the indoor heat converter in the 1st and the 2nd freeze cycle loop of independent setting respectively with common pressure fan.In Figure 10,1a.Be compressor, 2a is the four-way switching valve that refrigerant loop is changed, 3a is an outdoor heat converter, and 4a, 5a are respectively at heating operation, during refrigerating operaton as expansion mechanism play a role the 1st, the 2nd throttling arrangement, 6a are indoor heat converter, and 7a is a storage heater, by these being connected in turn, constitute the 1st freeze cycle loop 10 with refrigerant piping.In addition, 9a is used for the pressure fan of blowing to outdoor heat converter 3a, 4aa, 4ab is respectively the 1st decompressor (for example capillary) that constitutes the 1st throttling arrangement 4a and is arranged on the 1st non-return valve that makes in its loop that becomes bypass, 5aa, 5ab is respectively the 2nd decompressor (for example capillary) that constitutes the 2nd throttling arrangement 5a and is arranged on the 2nd non-return valve that makes in its loop that becomes bypass.In addition, 1b.Be compressor, 2b is the four-way switching valve that carries out the conversion of refrigerated medium loop, 3b is an outdoor heat converter, 4b, 5b is respectively the 1st and the 2nd throttling arrangement that plays a role as expansion mechanism when heating operation and refrigerating operaton, 6b is an indoor heat converter, and 7b is a storage heater, and with refrigerant piping these being connected in turn constitutes the 2nd freeze cycle loop 11.In addition, 9b is used for the outdoor draft fan of blowing to outdoor heat converter 3b, 4ba, 4bb is respectively into the 1st decompressor (for example capillary) of structure the 1st throttling arrangement 4b and is arranged on and makes it become the 1st non-return valve of bypass, 5ba, 5bb are respectively the 2nd decompressor that constitutes the 2nd throttling arrangement 5b and are arranged on the 2nd non-return valve that makes in its loop that becomes bypass.The 8 common pressure fans of blowing for indoor heat converter 6b to the indoor heat converter 6a in the 1st freeze cycle loop 10 and the 2nd freeze cycle loop 11.

In the conditioner that constitutes like this, below at first the action in the 1st freeze cycle loop 10 is described.In the 1st freeze cycle loop 10, when carrying out refrigerating operaton, (represent refrigerant flow direction with the heavy line arrow among the figure), make from compressor 1a.The high-temperature high-pressure gas refrigerant of discharging carries out heat exchange at outdoor heat exchanger 3a with the outdoor air that pressure fan 9a sends here, thereby makes the gas refrigerant condensationization by four-way switching valve 2a.And make the 1st non-return valve 4ab in its bypass of passing through the 1st throttling arrangement 4a one side, importing constitutes the 2nd decompressor of the 2nd throttling arrangement 5a and obtains decompression, becomes low temperature low pressure liquid refrigerants.Thereafter, formation makes this liquid refrigerant enter indoor heat converter 6a and carries out heat exchange with the room air that indoor blower 8 is sent here, when making the room air cooling, therefore make liquidus cold-producing medium evaporation liquefaction, by four-way switching valve 2a, storage heater 7a returns compressor 1a.Refrigeration the time freeze cycle, make later on cold-producing medium in above-mentioned freeze cycle loop the one side liquefy repeatedly successively the vaporization and circulate.

On the other hand, when heating operation, (represent refrigerant flow direction with the fine line arrow among the figure), make from compressor 1a.The high-temperature high-pressure gas refrigerant of discharging is by converting the four-way switching valve 2a of heating operation to, enter indoor heat converter 6a, carry out heat exchange with the room air of sending here with indoor blower and when making room air obtain heating, therefore make the gas refrigerant condensation liquefaction.And, make this liquid refrigerant become the 2nd non-return valve 5ab in the loop of bypass by making the 2nd throttling arrangement 5a, importing the 1st decompressor 4aa that constitutes the 1st throttling arrangement 4a obtains decompression and becomes low temperature low pressure liquid refrigerants, thereafter, make liquid refrigerant inlet chamber outer heat-exchanger 3a, carry out heat exchange with the outdoor air of sending here with outdoor draft fan 9a, from outdoor air, absorb heat, when making the outdoor air cooling, make the liquid refrigerant evaporates vaporization in view of the above, by four-way switching valve 2a, storage heater 7a returns compressor, the freeze cycle when constituting heating in view of the above.

In addition, when such heating operation is proceeded, for example when outside air temperature is low, on outdoor heat converter 3a frosting takes place.Owing to when such frosting becomes for a long time, heat exchanger effectiveness is lowered, making recepts the caloric from outdoor air reduces, and the heating capacity of conditioner is significantly reduced, and therefore in such cases, is necessary to carry out Defrost operation.

When carrying out such Defrost operation (among the figure, the with dashed lines arrow is represented refrigerant flow direction), formation makes from compressor 1a.The high-temperature high-pressure gas refrigerant of discharging carries out following freeze cycle operation, promptly by be transformed into the four-way switching valve 2a of refrigerating operaton, inlet chamber outer heat-exchanger 3a from heating operation.Here, outdoor draft fan 9a is out of service.And make the lip-deep frosting dissolving of this outdoor heat converter 3a with the high-temperature gas cold-producing medium, make this condensation of refrigerant liquefaction simultaneously, by making the 1st throttling arrangement 4a become the non-return valve 4ab of bypass, make its decompression with the 2nd decompressor 5aa that constitutes the 2nd throttling arrangement 5a, become the liquid refrigerant of low-temp low-pressure, enter indoor heat converter 6a, next return compressor 1a by four-way switching valve 2a and storage heater 7a.In addition, because refrigerating operaton, heating operation and Defrost operation also can similarly be carried out with above-mentioned the 1st freeze cycle loop 10 in the 2nd freeze cycle loop 11, thereby save its explanation.

Yet, when in above-mentioned heating operation, carrying out Defrost operation, produce some problems in the occasion that makes low temperature low pressure liquid refrigerants import indoor heat converter 6.Being exactly the indoor blower 8 that is provided with in the face of this indoor heat converter 6, when this Defrost operation, is to carry out gentle breeze operation or out of service.And, for example, make low temperature low pressure liquid refrigerants and room air carry out heat exchange making it carry out the occasion of gentle breeze operation, make the empty interior air cooled while, make the liquid refrigerant evaporates vaporization, and return compressor 1 by four-way conversion 2 and storage heater 7.Therefore, being formed in this occasion indoorly has cold wind to blow out, thereby produces the significantly reduced problem of air conditioning effect that makes.

In addition, machine 8 occasion out of service in making indoor sending, because low-temperature low-pressure refrigerant can not absorb heat, cold-producing medium directly enters storage heater 7 and returns compressor 1 under liquid condition, 1 pair of liquid of compressor is compressed, thereby produce the troublesome problem of bringing to compressor.

In addition, if according to above-mentioned traditional device, because the high-pressure when defrosting is low especially, low pressure is also low, so exist the ability of compressor 1 not give full play to, defrosting time is shortcoming such as length also.In addition, because during heating operation, to refrigerating operaton conversion carrying out Defrost operation, therefore there is this conversion in four-way switching valve 2 and produces the problem of heat loss.

In above-mentioned traditional conditioner, because the indoor side heat exchanger in independent the 1st and the 2nd freeze cycle loop that is provided with is to blow from common pressure fan separately, therefore when heating operation, the freeze cycle loop on any one side in the above-mentioned the 1st and the 2nd freeze cycle loop, even for example the 1st freeze cycle loop becomes Defrost operation, low temperature low pressure liquid refrigerants is imported into the indoor heat converter in the 1st freeze cycle loop, because the 2nd freeze cycle loop of another side is in the cause in the heating operation, and above-mentioned pressure fan is shut down, thereby the indoor heat converter in above-mentioned the 1st freeze cycle loop makes low temperature low pressure liquid refrigerants and room air carry out heat exchange, room air is cooled, and blow out to indoor, thereby the air conditioning effect is significantly reduced, in addition and since especially when Defrost operation high-pressure low, low pressure is also low, compressor capacity can not be given full play to, and the Defrost operation time is elongated.And then the four-way switching valve carries out Defrost operation to the conversion of refrigerating operaton one side during owing to heating operation, so exist in problems such as producing heat loss when this changes.

The present invention forms in order to address these problems exactly, its purpose be to provide in the time of preventing from heating operation, to carry out Defrost operation to indoor blow out cold wind in, heat loss when Defrost operation is changed does not exist yet, the conditioner that can defrost with short defrosting time.And then, be enough to provide a kind of and do not exist above-mentioned cold wind, and can carry out Defrost operation and the conditioner of not supervening the too high rising of high-pressure is the object of the invention with the short time to the indoor phenomenon that blows out with heat loss.

About conditioner of the present invention is to be provided with from shunt between three-dimensional switching valve and four-way switching valve, for gas refrigerant and the suction side pipe arrangement that makes the HTHP that comes out from compressor carries out heat exchange, and the 1st and the 2nd pipe arrangement one side between throttling arrangement when forming the 1st bypass of bypass, setting from have make the 1st and the 2nd decompressor become bypass non-return valve the 2nd, the 3rd bypass and above-mentioned compressor are discharged pipe arrangement by the three-dimensional switching valve, with the above-mentioned the 1st, pipe arrangement one side forms having than more the 4th bypass of fine inner diameter of this discharge pipe arrangement internal diameter of bypass connection between the 2nd throttling arrangement, and then also be provided with from form the 5th bypass of bypass connection between above-mentioned compressor discharge pipe arrangement and three-dimensional switching valve by pipe arrangement one side between pressure-regulating valve and above-mentioned the 1st, the 2 throttling arrangement.In claim 2, be in claim 1, to increase, indoor temperature in Defrost operation, with certain hour at interval, makes the three-dimensional switching valve return to the warming operation state when setting is following.In claim 3, be in claim 1, to increase indoor temperature when setting is following, in Defrost operation, with certain hour at interval, make the 8th bypass become disconnection.

About the conditioner of blowing to the indoor heat converter in the 1st and the 2nd freeze cycle loop that independently is provided with respectively from common pressure fan, in claim 4, setting has to be made the 1st decompressor that constitutes the 1st throttling arrangement become the non-return valve and the 2nd bypass of bypass and has the 2nd decompressor that makes formation the 2nd throttling arrangement when becoming the 3rd bypass of non-return valve of bypass, on the above-mentioned the 1st and the 2nd freeze cycle loop, be provided with from the discharge pipe arrangement of compressor respectively and pass through three-dimensional switching valve and the above-mentioned the 1st, what be connected between the 2nd throttling arrangement has than above-mentioned discharge pipe arrangement internal diameter more the 4th bypass of fine inner diameter pipe arrangement the time, setting makes a part from the discharging refrigerant of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop when bypass is carried out by switch valve in the suction side of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop, be formed in bypass and make the 6th bypass that to carry out heat exchange with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop midway, and make a part from the discharging refrigerant of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop when bypass is carried out by switch valve in the suction side of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop, be formed in bypass and may carry out the 7th bypass of heat exchange midway with the refrigerant suction pipe road of the above-mentioned compressor in the 1st freeze cycle loop, formation can make the above-mentioned the 1st and the loop in the 2nd freeze cycle loop in above-mentioned three-dimensional switching valve in the time of above-mentioned the 4th bypass conversion, the above-mentioned switch valve in another above-mentioned freeze cycle loop is opened, carried out Defrost operation.

The discharge pressure control valve of opening according to the discharge pressure of compressor in addition, in above-mentioned such formation, is set and above-mentioned the 4th bypass parallel connection.In claim 5, setting have make the 1st decompressor that constitutes the 1st throttling arrangement become bypass non-return valve the 2nd bypass and have the 2nd decompressor that makes formation the 2nd throttling arrangement when becoming the 3rd bypass of non-return valve of bypass, also on the above-mentioned the 1st and the 2nd freeze cycle loop, be provided with from the discharge pipe arrangement of compressor respectively and pass through three-dimensional switching valve and the 1st, what be connected between the 2nd throttling arrangement has more the 4th bypass of fine inner diameter pipe arrangement of above-mentioned discharge pipe arrangement internal diameter, and be provided with to make and make it when becoming bypass between the 1st and the 2nd throttling arrangement in above-mentioned the 1st freeze cycle loop by decompressor and the switch valve that makes this device become bypass from the part of the discharging refrigerant of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop, constitute make its bypass midway might and the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop carry out the 6th bypass of heat exchange and make making it when becoming bypass between the 1st and the 2nd throttling arrangement in above-mentioned the 2nd freeze cycle loop by decompressor and the switch valve that makes this decompressor become bypass from the part of the discharging refrigerant of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop, constitute and to make it in bypass, might carry out the 7th bypass of heat exchange with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop, and constitute above-mentioned three-dimensional switching valve in the loop enabling in making the above-mentioned the 1st and the 2nd freeze cycle loop in above-mentioned the 4th bypass one side conversion, above-mentioned switch valve on another loop is opened, carried out Defrost operation.In claim 6, setting have make the 1st decompressor that constitutes the 1st throttling arrangement become bypass non-return valve the 2nd bypass and have the 2nd decompressor that makes formation the 2nd throttling arrangement when becoming the 3rd bypass of non-return valve of bypass, also on the above-mentioned the 1st and the 2nd freeze cycle loop, be provided with respectively from compressor and discharge pipe arrangement by three-dimensional switching valve and the 1st, be connected between the 2nd throttling arrangement, have than above-mentioned discharge pipe arrangement internal diameter more the pipe arrangement of fine inner diameter the 4th bypass and discharge between pipe arrangement and three-dimensional switching valve by pressure-regulating valve and the 1st from compressor, the 5th bypass that is connected between the 2nd throttling arrangement, the part make from the discharging refrigerant of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop meanwhile is set by decompressor with make this decompressor become the switch valve of bypass when forming bypass between the 1st and the 2nd throttling arrangement in above-mentioned the 1st freeze cycle loop, also constitute make its bypass midway might and the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop carry out the 6th bypass of heat exchange and make from the part of the discharging refrigerant of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop by decompressor with make this decompressor become the switch valve of bypass to the 1st, when forming bypass between the 2nd throttling arrangement, constitute and to make it might carry out the 7th bypass of heat exchange with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop, can be in above-mentioned the 4th bypass one side conversion thereby constitute at the above-mentioned three-dimensional switching valve in the loop in making the above-mentioned the 1st and the 2nd freeze cycle loop, above-mentioned switch valve on another freeze cycle loop is opened, to carry out Defrost operation.

If according to the present invention, when in heating operation, carrying out Defrost operation, in that being become, the four-way switching valve make the pressure fan of blowing out of service under the heating operation state status to the indoor and outdoors heat exchanger, and carry out the conversion of three-dimensional switching valve, the 4th bypass is become open circuit and carry out Defrost operation, thereby prevent the heat loss that produces when carrying out the conversion of four-way switching valve originally, and prevent to the indoor cold wind that blows out, meanwhile, compressor capacity is improved, and then the high-temperature high-pressure gas refrigerant by making compressor and its suck pipe arrangement and carry out heat exchange and prevented to produce the phenomenon that liquid returns compressor, in claim the 4,5, in 6 and 7, when in heating operation, carrying out Defrost operation, four direction valves in making the 1st and the 2nd freeze cycle loop are under the heating operation state, make in the 1st and the 2nd freeze cycle loop, when for example the three-dimensional switching valve in the 1st freeze cycle loop is changed, make another loop, promptly the switch valve in the 2nd freeze cycle loop is opened, when high-temperature high-pressure refrigerant is offered the outdoor heat converter of frosting, because of the high-pressure that makes compressor rises its input is increased, so the ability of compressor is improved, thereby can be at short notice, and can not produce under the heat loss situation that causes because of the conversion of carrying out the four-way switching valve and carry out Defrost operation.And then by carrying out heat exchange between the high-temperature high-pressure refrigerant that switch valve in above-mentioned the 7th bypass opened come from compressor and compressor refrigerant suction line, the phenomenon that makes liquid return compressor is prevented.

In addition,, can prevent to rise too high, thereby can prevent to disconnect the operation that abends that causes because of high pressure at Defrost operation mesohigh pressure owing to export pressure-regulating valve on the side by being arranged on compressor.

Embodiment

Fig. 1 is an embodiment of the relevant conditioner of the present invention of expression, among the figure, make with above-mentioned Fig. 9 in identical or suitable part with identical label, and save its explanation.

According to the present invention, possessing with refrigerant piping compressor 1, three-dimensional switching valve 21, four-way switching valve 2, outdoor heat converter 3, the 1st throttling arrangement 4, the 2nd throttling arrangement 5, in the conditioner of the refrigerant loop that indoor heat converter 6 and storage heater 7 are connected in sequence, possess from branch between three-dimensional switching valve 21 and the four-way switching valve 2, by constituting the zone heat exchangers 25 that to carry out heat exchange with the suction pipe arrangement 1a that is connected storage heater 7 and compressor 1, and by assisted capillary 26 and the 1st, the 2nd throttling arrangement 4,5 pipe arrangements carry out the 1st bypass pipe arrangement 12 that bypass connects, and be provided with and have the 2nd bypass 4c and having that makes the 1st decompressor 4a become the non-return valve 4b of bypass when making the 2nd decompressor 5a become the 3rd bypass 5c of non-return valve 5b of bypass, setting has to make from compressor 1 discharges pipe arrangement 16 by three-dimensional switching valve 21 and the above-mentioned the 1st, the 2nd throttling arrangement 4,5 pipe arrangements carry out bypass and connect, and its internal diameter is than the 4th bypass 23 of discharging the thinner pipe arrangement 30 of pipe arrangement 1b internal diameter.And then the 5th bypass 29 that the pipe arrangement bypass by pressure-regulating valve 27 and 3,4 of above-mentioned the 1st, the 2nd throttling arrangements is connected is set from 21 of the discharge pipe arrangement 1b of compressor 1 and three-dimensional switching valves.And, in such formation, when Defrost operation, when four-way switching valve 2 being in make under the heating operation state status pressure fan 8,9 to stop, by the conversion of three-dimensional switching valve 21 to indoor and outdoors heat exchange 6,3 air-supplies, the 4th bypass 23 is disconnected, become and to carry out Defrost operation.

In having the conditioner of above-mentioned composition, the refrigeration cycle that is constructed as follows, i.e. when refrigerating operaton (flow direction of cold-producing medium is that the heavy line arrow is represented among the figure), when making the gas refrigerant of the HTHP of discharging from compressor 1 carry out heat exchange in outdoor heat exchange 3 with the outdoor air that outdoor draft fan 9 is sent here, make the gas refrigerant condensation in view of the above by four-way switching valve 2.And, reduced pressure with the 1st decompressor 4a in the 1st throttling arrangement 4 and become the liquid refrigerant of low-temp low-pressure.On the other hand, the gas refrigerant that makes a part of HTHP of discharging from compressor 1 is by the 1st bypass 12, carry out heat exchange at section heat exchanger 25 and the low pressure refrigerant that is attracted to compressor 1, make the cold-producing medium heating that is inhaled into and be gasified totally, make himself condensation, and reduced pressure with assisted capillary 26 and become the liquid refrigerant of low-temp low-pressure, then with the 1st and the 2nd throttling arrangement 4,5 pipe arrangement converges, by the 3rd bypass 5c in the 2nd throttling arrangement 5, enter indoor heat converter 6, carry out heat exchange with the room air of sending here from indoor blower 8 and when making the room air cooling, make the liquid refrigerant gasification in view of the above, and turn back to compressor 1 by four-way switching valve 2 and storage heater 7.

In addition, when heating operation (refrigerant flow direction is represented with the fine line arrow among the figure), the kind of refrigeration cycle that is constructed as follows, promptly the high-temperature high-pressure gas refrigerant of discharging from compressor 1 enters indoor heat converter 6 by the four-way switching valve of changing to heating operation 2, carry out heat exchange with the room air of sending here from indoor blower 8 and when making the room air heating, make the gas refrigerant condensation in view of the above.And make with the 2nd decompressor 5a in the 2nd throttling arrangement 5 and to obtain decompression and become the low-temp low-pressure liquid refrigerant.On the other hand, make a part of high-temperature high-pressure gas refrigerant of discharging pass through the 1st bypass 12 from compressor 1, carrying out heat exchange at zone heat exchangers 25 and the low pressure refrigerant that is attracted to compressor 1 makes the cold-producing medium of suction obtain heating and being gasified totally, make himself condensation, and by assisted capillary 26 obtain the decompression, the liquid refrigerant and the above-mentioned pipe arrangement that become low-temp low-pressure converge, by the 2nd bypass 4c in the 1st throttling arrangement 4, inlet chamber outer heat-exchanger 3, carry out heat exchange with the outdoor air of sending here from outdoor draft fan 9, when draw heat makes the outdoor air cooling from outdoor air, make liquid refrigerant evaporation gasification in view of the above, and by four-way switching valve 2, storage heater 7 turns back in the compressor 1 and goes.

In addition, when carrying out such heating operation, it is lower for example to work as outside air temperature, when frosting is necessary to carry out Defrost operation on outdoor heat converter 3 (among the figure, refrigerant flow direction with dashed lines arrow is represented), the pipe arrangement that the pipe arrangement 30 in the 4th bypass 23 on the pipe arrangement that is connected to 4,5 of the 1st, the 2nd throttling arrangements of the three-dimensional switching valve of the gas refrigerant that makes the HTHP of discharging from compressor 1 by being the Defrost operation transition status and flow throttling device are 4,5.And, make this gas refrigerant by the 2nd bypass 4c in the 1st throttling arrangement 4 inflow outdoor heat exchanger 3.At this moment, outside pressure fan 9 has been stopped running.And, with the high-temperature gas cold-producing medium knot is melted at outdoor heat converter 3 lip-deep frosts, make this condensed refrigerant flow into storage heater 7 by four-way switching valve 2 and return compressor).

Therefore,, can not make four-way switching valve 2 enter Defrost operation to the refrigerating operaton conversion, the heat loss that causes because of conversion takes place in view of the above and not from heating operation in such Defrost operation occasion.In addition, owing to do not make the cryogenic liquid cold-producing medium, therefore unborn cooling air is eliminated to the indoor problem that blows out by in the indoor heat converter 6.

And then owing to make the internal diameter of the pipe arrangement 30 of a part that constitutes the 4th bypass 23 go back thin than discharge line 16, thereby the generation pressure loss, the high side pressure of compressor 1 is risen, input also increases, thereby the ability of compressor 1 is increased, thereby might shorten the Defrost operation time.

In addition, the Defrost operation end signal can be learnt by with checkout gears such as thermistors the outlet temperature of the outdoor heat converter in the Defrost operation 3 being detected, yet because of high side pressure is risen, and make the high side pressure before Defrost operation closes to an end sharply rise, sometimes in outdoor heat exchange outlet temperature reach when finishing the situation improper out of service of Yi Fashengyin cutoff high before the temperature.The pressure-regulating valve 27 of the 5th bypass 29 is opened the situation about abending that can prevent to cause because of cutoff high by keeping high side pressure to fix.

In addition, owing to constitute with zone heat exchangers 25, and be to use the high-temperature high-pressure gas refrigerant of discharging from compressor 1 that the suction line 1a of compressor 1 is carried out heat exchange, so the phenomenon that can make liquid turn back to compressor 1 obtains preventing, thereby might prevent that trouble from appearring in compressor, in addition, again owing to be formed near before the Defrost operation end high pressure, low pressure being risen together, thereby the atmosphere that presents overheated slightly operation, and when Defrost operation, make this zone heat exchangers 25 inoperative, trouble occurs so can prevent compressor.

In addition, as representing with 34 in the drawings, when electric heater being set, owing in Defrost operation, do not make cold-producing medium can make indoor blower 8 runnings by these indoor heat converter 6 events as facing indoor heat converter 6, even thereby obtain when Defrost operation the effect that the heating continuation is moved.

In addition, by making the pressure-regulating valve 27 in this 5th bypass 29, for example in refrigeration or heating operation, former thereby be opened when high side pressure is sharply raise high side pressure because of certain, by high side pressure is maintained necessarily, and can prevent because of cutoff high take place improper out of service.

If constitute as shown in Figure 2, in Defrost operation, when (for example below 5 ℃), the pressure in the indoor heat converter 6 are roughly 5kg/cm below indoor temperature reaches certain value ²The degree of G is because the internal pressure piping of 4,5 of this pressure ratio the 1st and the 2nd throttling arrangements (is generally intermediate pressure, roughly 10-15kg/cm ²The degree of G) low, therefore, in Defrost operation, cold-producing medium enters and is trapped in the indoor heat converter 6.Thereby be created in the phenomenon of the short of refrigerant of circulation in the refrigerant loop, in addition, when above-mentioned cold-producing medium is detained too much, in case when turning back to heating operation, owing to work as condenser, so the cold-producing medium that is detained is filled high pressure disconnection phenomenon can take place also sometimes in condenser.

Therefore, in the defrosting running, by detecting indoor temperature with indoor temperature detector 33, when its value below certain value when (for example below 5 ℃), will be (after for example making the Defrost operation that carries out 5 minutes by certain time interval, turned back to heating operation 1 minute, and entered Defrost operation once more) turn back to the heating operation mode, to prevent the delay of cold-producing medium.

In addition, as by Fig. 3, constituting, then in Defrost operation, be that setting (for example below 5 ℃) is when following, because the pressure in the indoor heat converter 6 are roughly 5kg/cm in indoor temperature ²G, and (become intermediate pressure usually, be roughly 10-15kg/cm than the internal pressure piping of 4,5 of the 1st and the 2nd throttling arrangements ²G) low, so in Defrost operation, cold-producing medium is detained in heat exchanger 6.Therefore, appear at the phenomenon of the short of refrigerant of circulation in the refrigerant loop sometimes, or because of cold-producing medium is detained too much, and when turning back to heating operation, work as condenser, make cold-producing medium in condenser, be in the state of filling and to cause that also high pressure disconnects phenomenon.

Therefore, be formed in the Defrost operation, detect indoor temperature with indoor temperature detector 33, when its value below setting when (for example below 5 ℃), should be at interval with certain hour, the magnetic valve 32 of the 8th bypass 31 cuts out, thereby the 8th bypass 31 is disconnected, make the cold-producing medium that is trapped in the indoor heat converter 6 turn back to the structure of going in the storage heater 7.

The embodiment of Fig. 4 conditioner that to be expression blow from the indoor heat converter in the 1st and the 2nd freeze cycle loop that common pressure fan independently is provided with respectively.Among the figure, 4a, when 5a is refrigeration or heating operation, bring into play the 1st and the 2nd throttling arrangement of its function respectively as expansion mechanism, 4aa is for constituting the 1st decompressor (for example capillary) of above-mentioned the 1st throttling arrangement, 4ac becomes bypass for making above-mentioned the 1st decompressor 4aa, have and make cold-producing medium lead to the 2nd bypass of the non-return valve 4ab of outdoor heat converter 3a, 5aa is for constituting the 2nd decompressor (for example capillary) of above-mentioned the 2nd throttling arrangement 5a, 5ac becomes bypass for making above-mentioned the 2nd decompressor 5aa, has to make cold-producing medium lead to the 3rd bypass of the non-return valve 5ab of indoor heat converter 6a, and 14 for using refrigerant piping compressor 1a, four-way switching valve 2a, outdoor heat converter 3a, the 1st throttling arrangement 4a, the 2nd throttling arrangement 5a, indoor heat converter 6a, storage heater 7 connect and the 1st freeze cycle loop that constitutes successively.In addition, 4b, 5b is when refrigeration or heating operation, bring into play the 1st and the 2nd throttling arrangement of its function respectively as expansion mechanism, 4ba is for constituting the 1st decompressor (for example capillary) of above-mentioned the 1st throttling arrangement 4b, 4bc becomes bypass for making above-mentioned the 1st decompressor 4ba, have and make cold-producing medium lead to the 2nd bypass of the non-return valve 4bb of outdoor heat converter 3b, 5ba is for constituting the 2nd decompressor (for example capillary) of the 2nd throttling arrangement 5b, 5bc becomes bypass for making above-mentioned the 2nd decompressor 5ba, have and make cold-producing medium lead to the 3rd bypass of the non-return valve 5bb of indoor heat converter 6b, 15 for refrigerant piping compressor 1b, outdoor heat converter 3b, the 1st throttling arrangement 4b, the 2nd throttling arrangement 5b, indoor heat converter 6b, storage heater 7b connect and the 2nd freeze cycle loop that constitutes successively.In above-mentioned the 1st freeze cycle loop 14,23a has in being than the pipe arrangement 23aa of the also little internal diameter of internal diameter of discharging pipe arrangement 1ba and the 4th bypass of the non-return valve 23ab formation that is connected in series of pipe arrangement therewith, the one end has its internal diameter and compressor 1a by piping connection 18a.The identical refrigerant piping 20a of internal diameter of discharge pipe 1ba be connected with above-mentioned discharge pipe 1ba with three-dimensional switching valve 21a, the refrigerant piping 22a between its other end and the 1st, the 2nd throttling arrangement 12a, 13a is connected.35a is the 6th bypass that is arranged in the 1st freeze cycle loop 14, the part of discharging refrigerant that it makes the compressor 1a in the 1st freeze cycle loop 14 in the time of the bypass of the suction side of above-mentioned compressor 1a, and is carried out heat exchange at the neutralize refrigerant suction pipe road 1ab of above-mentioned compressor 1b in the 2nd freeze cycle loop 15 of the heat exchange department 25b that is arranged in this bypass by open and close valve 24a.35b is the 7th bypass in the 2nd freeze cycle loop 15, it make the 2nd freeze cycle loop 15 from compressor 1b.The part of discharging refrigerant is passed through open and close valve 24b to above-mentioned compressor 1b.The suction side bypass time, and carry out heat exchange at the neutralize refrigerant suction pipe road 1aa of above-mentioned compressor 1a in the 1st freeze cycle loop 14 of the heat exchange department 25a that is arranged in this bypass.

In by the above conditioner of forming, below at first, the action in the 1st freeze cycle loop 14 is described.In the 1st freeze cycle loop 14, when carrying out refrigerating operaton, (represent the flow of refrigerant direction with the heavy line arrow among the figure), make from compressor 1a.The high-temperature high-pressure gas refrigerant of discharging, by three-dimensional switching valve 21a and four-way switching valve 2a, carry out heat exchange at outdoor heat converter 3a with the outdoor air that outdoor draft fan 9a sends here, meanwhile make the gas refrigerant condensation, and, make its decompression with the 1st decompressor 4aa among the 1st throttling arrangement 4a and become the liquid refrigerant of low-temp low-pressure, make it enter indoor heat converter 6a by the 3rd bypass 5ac among the 2nd throttling arrangement 5a, carry out heat exchange with the room air of sending here from indoor blower 8 and make the room air cooling, meanwhile make the liquid refrigerant gasification in view of the above, and return compressor 1a by four-way switching valve 2a and storage heater 7a.Thereby constitute above-mentioned freeze cycle loop.

In addition, when heating operation, (represent the flow of refrigerant direction with the fine line arrow among the figure), from compressor 1a.The high-temperature high-pressure gas refrigerant of discharging enters indoor heat converter 6a by three-dimensional switching valve 21a and the four-way switching valve 2a that converted heating operation to, carry out heat exchange with the room air of sending here from indoor blower 8, make the room air heating, meanwhile make the gas refrigerant condensation liquefaction in view of the above, and, make decompression and become the liquid refrigerant of low-temp low-pressure with the 2nd decompressor 5aa among the 2nd throttling arrangement 5a, and make it pass through the 2nd bypass 4ac inlet chamber outer heat-exchanger 3a among the 1st throttling arrangement 4a, carry out heat exchange here and from the outdoor air that outdoor draft fan 9a sends here, heat absorption makes the outdoor air cooling from outdoor air, meanwhile make the liquid refrigerant carburation by evaporation, turn back to compressor 1a by four-way switching valve 2a and storage heater 7a.In go, thereby constitute above-mentioned freeze cycle loop.

In addition, when above-mentioned heating operation, for example low in outside air temperature, on outdoor heat converter 3a during frosting, when being necessary to carry out Defrost operation (among the figure, the with dashed lines arrow is represented the flow of refrigerant direction), four-way switching valve 2a is under the heating operation state, three-dimensional switching valve 21a is changed to the 4th bypass 23a one side.Make the high-temperature high-pressure gas refrigerant of discharging pass through three-dimensional switching valve 21a from compressor 1a, the pipe arrangement 23aa of the 4th bypass 23a that is connected with refrigerant piping 22a side between the 1st, the 2nd throttling arrangement 4a, 5a, non-return valve 23ab flows into this refrigerant piping 22a, and flows into outdoor heat exchange 3a by the 2nd bypass 4ac of the 1st throttling arrangement 4a.At this moment, outdoor draft fan 9a is shut down.Make the lip-deep frost melts of outdoor heat converter 3a with the high-temperature gas cold-producing medium, make the liquefaction of this condensation of refrigerant, and enter storage heater 7a, and then become by heat exchange department 25a and to turn back to compressor 1a by the four-way switching valve.In the situation of going.When Defrost operation, because therefore the open and close valve 24b of the 7th bypass 35b in the 2nd freeze cycle loop 15 of another side, in above-mentioned heat exchange department 25a, makes the compressor 1b from the 2nd freeze cycle loop 15 for closing.High-temperature high-pressure refrigerant and the refrigerant suction pipe road 1aa in the 1st freeze cycle loop 14 carry out heat exchange.

In aforesaid Defrost operation, owing to can not carry out four-way switching valve 2a, enable to carry out Defrost operation, therefore the heat loss that does not cause because of conversion from the conversion of heating operation to refrigerating operaton.In addition, owing to do not make low-temperature refrigerant pass through indoor heat converter, making original has cold wind to blow out such problem to be eliminated indoor, and make the freeze cycle loop that only depends on another side just can carry out heating operation, when carrying out Defrost operation, need not interrupt heating operation, thereby make indoor increase comfort.

And then, owing to the internal diameter of the pipe arrangement 23aa that makes a part of forming the 4th bypass 23a is thinner than the internal diameter of discharging side line 1ba, thereby produce the pressure loss, make compressor 1a.High-pressure rise, input is increased, thereby makes compressor 1a.Ability increase, thereby might shorten time of defrosting.

In addition, because in Defrost operation, by making other one side, from the compressor 1b in the 2nd freeze cycle loop 15.The bypass 23b of discharge pipe arrangement 19b branch on switch valve 24b close, high-temperature high-pressure refrigerant is provided to heat exchange department 25a, make to be inhaled into compressor 1a.Low temperature low pressure liquid refrigerants can obtain abundant heating and gasifying, thereby can prevent that liquid from returning enters compressor 1a.Interior phenomenon takes place, and then makes low pressure rise compressor 1a.Ability increase, have the time that can further shorten defrosting.

Below the action in the 1st freeze cycle loop 14 is narrated, because also can similarly freeze with the 1st freeze cycle loop 14 in the 2nd freeze cycle loop 15, heating and Defrost operation, thereby its explanation is omitted.

Fig. 5 is that the refrigerant loop of other embodiment of the relevant the present invention of expression and the difference of above-mentioned Fig. 4 are the compressor 1a in the 1st freeze cycle loop 14.High side pressure become the authorized pressure value when above, make the pressure-regulating valve 27a that opens be arranged in parallel on the 4th bypass 23a in, compressor 1b in the 2nd freeze cycle loop 15.High side pressure become the pressure-regulating valve 27b that the authorized pressure value is opened when above, be arranged in parallel on the 3rd bypass 23b, can make when Defrost operation, the high side pressure that is positioned at the compressor of Defrost operation one side maintains below the setting, thereby the rapid rising of high side pressure before defrosting closes to an end that the effect of increasing of the 4th bypass high side pressure during by Defrost operation causes, before the output temperature of outdoor heat converter reaches defrosting temperature at the end, just can prevent to disconnect the operation that abends that causes because of high pressure.

In addition, in above-mentioned other embodiment, the situation that is set up in parallel pressure-regulating valve in the 4th bypass that the thinner pipe arrangement of non-return valve and internal diameter ratio piston compressor discharge pipe arrangement internal diameter is connected in series is described, yet also can be arranged to make above-mentioned pressure-regulating valve only with internal diameter than the thinner pipe arrangement parallel connection of above-mentioned discharge pipe arrangement internal diameter, and then the 4th bypass only is made of than discharging the thinner pipe arrangement of pipe arrangement internal diameter internal diameter, pressure-regulating valve and this pipe arrangement are arranged in parallel.

Other embodiment of Fig. 6 conditioner that to be expression blow to the indoor heat converter in independent the 1st, the 2nd freeze cycle loop that is provided with respectively from common pressure fan.Among the figure, identical among label and Fig. 4 is the identical or suitable part of expression, thereby omits its explanation.4a, 5a be respectively refrigeration, during heating operation as the 1st and the 2nd throttling arrangement of expansion mechanism performance function.4aa is for constituting the decompressor (for example capillary) of above-mentioned the 1st throttling arrangement, 4ac becomes bypass for making above-mentioned the 1st decompressor 4aa, have and make cold-producing medium pass through the 2nd bypass of the non-return valve 4ab of outdoor heat converter 3a, 5aa is for constituting the 2nd decompressor (for example capillary) of above-mentioned the 2nd throttling arrangement 5a, 5ac becomes bypass for making above-mentioned the 2nd decompressor 5aa, have and make 3rd bypass of cold-producing medium by the non-return valve 5ab of indoor heat exchange 6a, 14 for using refrigerant piping compressor 1a, four-way switching valve 2a, outdoor heat converter 3a, the 1st throttling arrangement 4a, the 2nd throttling arrangement 5a, indoor heat converter 6a, the 1st freeze cycle loop that storage heater 7a connects and composes successively.In addition, 4b, 5b is respectively in refrigeration, bring into play the 1st of function as expansion mechanism during heating operation, the 2nd throttling arrangement, 4ba is for constituting the 2nd decompressor (for example capillary) of above-mentioned the 1st throttling arrangement 4b, 4bc becomes bypass for making above-mentioned the 1st decompressor 5ba, have and make cold-producing medium pass through the 2nd bypass of the non-return valve of outdoor heat converter 3b, 5ba is for constituting the 2nd decompressor (for example capillary) of the 2nd throttling arrangement 5b, 5bc becomes bypass for making above-mentioned the 2nd decompressor 5ba, 5bc is for making above-mentioned the 2nd decompressor 5ba for becoming bypass, have and make cold-producing medium pass through the 3rd bypass of the non-return valve of indoor heat converter 6b, 15 for refrigerant piping compressor 1b, outdoor heat converter 3b, the 1st throttling arrangement 4b, the 2nd freeze cycle loop that the 2nd throttling arrangement 5b, indoor heat converter 6b, storage heater 7b connect and compose successively.In above-mentioned the 1st freeze cycle loop 14,23a serves as reasons and has internal diameter than discharging the pipe arrangement thinner pipe arrangement 23aa of 1ba internal diameter and the 3rd bypass that constitutes of the non-return valve 23ab that is connected in series of pipe arrangement therewith, and the one end is by piping connection 18a, internal diameter and compressor 1a.The identical refrigerant piping 20a of internal diameter of discharge pipe arrangement 1ba, three-dimensional switching valve 21a is connected with above-mentioned discharge pipe arrangement 1ba, the refrigerant piping 22a between its other end and the 1st, the 2nd throttling arrangement 4a, 5a is connected.35a is the 6th bypass in the 1st freeze cycle loop 14, and it makes the compressor 1a in the 1st freeze cycle loop 14.Discharging refrigerant a part by make decompressor (for example capillary) 26a and make this decompressor become the switch valve (for example electromagnetic switch valve) 24 of bypass), in the time of the refrigerant piping 22a bypass between the 1st, the 2nd throttling arrangement 4a, the 5a in the 1st freeze cycle loop 14, carry out heat exchange being positioned at the neutralize refrigerant suction pipe 1ab of above-mentioned compressor 1b in the 2nd freeze cycle loop 15 of heat exchange department 25b in this bypass.35b is the 7th bypass in the 2nd freeze cycle loop 15, and it makes the compressor 1b in the 2nd freeze cycle loop 15.The part of discharging refrigerant by decompressor (for example capillary) 26b and make this decompressor 26b become 1st, the 2nd throttling arrangement 4b of switch valve (for example electromagnetic switch valve) 24b of bypass to the 2nd freeze cycle loop 15, in the time of refrigerant piping 22b bypass between 5b, carry out heat exchange being positioned at the neutralize refrigerant suction pipe 1aa of above-mentioned compressor 1a in the 1st freeze cycle loop 14 of heat exchange department 25a in this bypass.

In by the above conditioner that constitutes, below, at first the action to the 1st freeze cycle loop 14 describes.In the 1st freeze cycle loop 14, when refrigerating operaton, (among the figure, represent the flow of refrigerant direction), from compressor 1a with the heavy line arrow.The high-temperature high-pressure gas refrigerant of discharging carries out heat exchange by three-dimensional switching valve 21a and four-way switching valve 2a at outdoor heat converter 3a with the outdoor air that outdoor draft fan 9a sends here, meanwhile, makes condensation of refrigerant liquefaction.And, make decompression and become the liquid refrigerant of low-temp low-pressure with the 1st decompressor 4aa of the 1st throttling arrangement 4a.Make the part of the high-temperature high-pressure gas refrigerant of discharging from compressor 1a can be on the other hand by the 6th bypass 35a at the heat exchange department 25b in the 2nd freeze cycle loop 15 with will be inhaled into the compressor 1b in the 2nd freeze cycle loop 15.Interior low depressor carries out heat exchange, make the cold-producing medium heating of this suction and be gasified totally, and make himself condensation liquefaction, because of decompressor 26a obtains decompression, and become the liquid refrigerant of low-temp low-pressure, with the 1st, the 2nd throttling arrangement 4a, refrigerant piping 22a between 5a converges, and enter indoor heat converter 6a by the 2nd bypass 5ac among the 2nd throttling arrangement 5a, carry out heat exchange with the room air of sending here from indoor blower 8, make room air obtain cooling, meanwhile make the liquid refrigerant evaporates vaporization, return compressor 1a by four-way switching valve 2a and storage heater 7a.Constitute such freeze cycle loop.

In addition, when heating operation, (represent refrigerant flow direction with the fine line arrow among the figure), make the high-temperature high-pressure gas refrigerant of discharging pass through three-dimensional switching valve 21a from compressor 1a, enter indoor heat converter 6a to the four-way switching valve 2a of heating operation conversion, carry out heat exchange with the room air of sending here from indoor blower 8, when room air is heated, make condensation of refrigerant liquefaction in view of the above, and make its decompression and become the cold-producing medium of low-temp low-pressure with the 2nd decompressor 5aa among the 2nd throttling arrangement 5a.On the other hand from compressor 1a.The part of the high-temperature high-pressure gas refrigerant of discharging is by the 6th bypass 35a, carry out heat exchange at the heat exchange department 25b in the 2nd freeze cycle loop 15 and the low pressure refrigerant that will be inhaled in the compressor 1b in the 2nd freeze cycle loop 15, heat sucking cold-producing medium, make it to be gasified totally, yet himself is condensation liquefaction then, and because of decompressor 26a obtains decompression, become low temperature low pressure liquid refrigerants, with the 1st, the 2nd throttling arrangement 4a, refrigerant piping 22a between 5a converges, and by the 1st bypass 4ac inlet chamber outer heat-exchanger 3a among the 1st throttling arrangement 4a, carry out heat exchange with the outdoor air from outdoor draft fan 9a, therefore heat absorption from outdoor air and make outdoor air cooling time makes the cold-producing medium carburation by evaporation, by four-way switching valve 2a, storage heater 7a turns back to compressor 1a.In go to line up such freeze cycle loop.

In addition, when carrying out such heating operation, low in for example outside air temperature, frosting on outdoor heat converter 3a, thereby when being necessary to carry out Defrost operation (among the figure, the with dashed lines arrow is represented refrigerant flow direction), in that four-way switching valve 2a is under the heating operation state status, three-dimensional switching valve 21a is changed to the 4th bypass 23a.Make the high-temperature high-pressure gas refrigerant of discharging from compressor 1a by three-dimensional switching valve 21a, with the 1st, the 2nd throttling arrangement 4a, the pipe arrangement 23aa of the 4th bypass 23a that refrigerant piping 22a between 5a is connected and non-return valve 23ab and flow into this refrigerant piping 22a, and by the 2nd bypass 4ac of the 1st throttling arrangement 4a inflow outdoor heat exchanger 3a.At this moment, outdoor draft fan 9a is out of service.And, make above-mentioned high-temperature gas cold-producing medium and carry out heat exchange and make above-mentioned frost melts in the lip-deep frosting of outdoor heat converter 3a.Enter storage heater 7a and turn back to compressor 1a by four-way switching valve 2a behind the gas refrigerant condensation liquefaction on the other hand by heat exchange department 25a.When carrying out Defrost operation since the switch valve 24b of the 7th bypass 35b in the 2nd freeze cycle loop 15 of another side open, so in above-mentioned heat exchange department 25a, make the compressor 1b in the 2nd freeze cycle loop 15.High-temperature high-pressure refrigerant and the refrigerant suction pipe road 1aa in the 1st freeze cycle loop 14 carry out heat exchange.

As mentioned above, when defrosting, can not make four-way switching valve 2a under the refrigerating operaton change over condition, carry out Defrost operation, in view of the above the heat loss that does not cause because of conversion from heating operation.In addition, because low-temperature refrigerant is by indoor heat converter 6a, thereby eliminates original such cold wind and be blown into indoor problem, make to only depend on the refrigerating circuit of another side just can carry out heating operation, heating operation is interrupted, so indoor comfort is increased because of defrosting.

In addition, because in common refrigeration, heating operation, respectively at heat exchange department 25a, 25b uses from compressor 1a.，1b。The high-temperature high-pressure gas refrigerant of discharging makes and relative compressor 1a.，1b。Suction pipe arrangement 1aa, 1ab carries out heat exchange mutually, returns compressor 1a so can prevent liquid., the phenomenon of 1bo takes place, thereby can prevent to carry out in compressor liquid compression.

And then owing to make the internal diameter formation of the pipe arrangement 23aa that constitutes the 4th a bypass 23a part thinner than discharging pipe arrangement internal diameter 1ba, thereby the generation pressure loss, and high side pressure is risen, input increases so the ability of compressor 1a increases, thereby might shorten the Defrost operation time.

In addition, in Defrost operation because by the switch valve 24b from the bypass 35b of the discharge pipe arrangement 1bb branch of the compressor 1b in the 2nd freeze cycle loop 15 of another side is opened, and the high-temperature high-pressure refrigerant exchange 25a of portion is provided, to be inhaled into compressor 1a so can make.Low temperature low pressure liquid refrigerants fully absorb heat and vaporize, thereby can prevent that liquid from turning back to compressor 1a.Interior phenomenon takes place, and then also has the low pressure rising, and compressor capacity is increased, and can further shorten the advantage of defrosting time.

More than the action in the 1st freeze cycle loop 14 is described because also can similarly freeze with above-mentioned the 1st freeze cycle loop 14 in the 2nd freeze cycle loop 15, heating and Defrost operation, thereby its explanation is omitted.

Fig. 7 is the refrigerant loop figure of expression another other embodiment of the present invention, and the difference of it and above-mentioned Fig. 6 is by the compressor 1a in the 1st freeze cycle loop 14.High side pressure when reaching pressure-regulating valve 27a that the authorized pressure value opens when above and the 4th bypass 23a and be arranged in parallel, make compressor 1b in the 2nd freeze cycle loop 15.High side pressure reach pressure-regulating valve 27b that the authorized pressure value opens when above and the 4th bypass 23b in the 2nd freeze cycle loop 15 is arranged in parallel, can be when the defrosting running, the high side pressure of the compressor during because of Defrost operation maintains below the setting, and the rapid rising of the high side pressure of the defrosting that causes of the 4th bypass high side pressure effect of increasing can make because of Defrost operation time the before closing to an end, and before the output temperature of outdoor heat converter reached the temperature that Defrost operation ends, the phenomenon that disconnects the operation that abends that causes because of high pressure was prevented.

In addition, in the above-described embodiments, the example that constitutes the 4th bypass is connected in series by non-return valve and the thinner pipe arrangement of internal diameter ratio piston compressor discharge pipe arrangement internal diameter is illustrated, yet be not limited to this, only constitute also passable than the thinner pipe arrangement of above-mentioned discharge pipe arrangement internal diameter by internal diameter, and then the 4th bypass only is made of than discharging the thinner pipe arrangement of pipe arrangement internal diameter internal diameter, pressure-regulating valve and this pipe arrangement are arranged in parallel.

Fig. 8 is other embodiment of the conditioner of blowing to the indoor heat converter in independent the 1st and the 2nd freeze cycle loop that is provided with separately from common pressure fan.Among Fig. 8, the label identical with label among Fig. 4 represented identical or suitable part, thereby saves its explanation.4a, the the 1st and the 2nd throttling arrangement that works as expansion mechanism respectively when 5a is cold-producing medium, heating operation, 4aa is for constituting the 1st decompressor (for example capillary) of above-mentioned the 1st throttling arrangement, 4ac becomes bypass for making above-mentioned the 1st decompressor 4aa, has to make cold-producing medium lead to the 2nd bypass of the non-return valve 4ab of outdoor heat converter 3a.5aa is for constituting the 2nd decompressor (for example capillary) of above-mentioned the 2nd throttling arrangement 5a, and 5ac makes above-mentioned the 2nd decompressor 5aa become bypass, has the 3rd bypass that makes the non-return valve 5ab that cold-producing medium flows through to indoor heat exchange 6a direction.14 for using refrigerant piping compressor 1a., four-way switching valve 2a, outdoor heat converter 3a, the 1st throttling arrangement 4a, the 1st freeze cycle loop that the 2nd throttling arrangement 5a, indoor heat converter 6a and storage heater 7a connect and compose successively.In this 1st freeze cycle loop, 23a is by having internal diameter than thinner pipe arrangement 23aa of the internal diameter of discharging pipe arrangement 1ba and the 3rd bypass that constitutes of the non-return valve 23ab that is connected in series of pipe arrangement therewith, make the one end by piping connection 18a, its internal diameter and compressor 1a.Identical refrigerant piping 20a and the three-dimensional switching valve 21a of internal diameter of discharge pipe arrangement 1ba be connected with above-mentioned discharge pipe arrangement 1ba, make its other end and the 1st, the 2nd throttling arrangement 4a, the refrigerant piping 22a between 5a is connected.35a is the 6th bypass in the 1st freeze cycle loop 14, and it makes compressor 1a.The part of discharging refrigerant by making decompressor (for example capillary) 26a and make this decompressor 26a become switch valve (for example electromagnetic switch valve) 24a of bypass to the 1st, the 2nd throttling arrangement 4a, in the time of refrigerant piping 22a bypass between 5a, be arranged in the heat exchange department 25b of this bypass, making the compressor 1b in itself and the 2nd freeze cycle loop 15.Refrigerant suction pipe road 1ab carry out heat exchange.29a is the 5th bypass that constitutes with pressure-regulating valve 27a, and the one end is connected with the discharge pipe arrangement 1ba that is connected compressor 1a and three-dimensional switching valve 21a, and the refrigerant piping 22a between its other end and the 1st, the 2nd throttling arrangement 4a, 5a is connected.

In addition, 4b, 5b is refrigeration, bring into play the 1st of its function during heating operation respectively as expanding, the 2nd throttling arrangement, 4ba is for constituting the 1st decompressor (for example capillary) of above-mentioned the 1st throttling arrangement 4b, 4bc becomes bypass for making above-mentioned the 1st decompressor 4ba, have and make cold-producing medium lead to the 2nd bypass of the non-return valve of outdoor heat exchange 3b, 5ba is the 2nd decompressor (for example capillary) that constitutes the 2nd throttling arrangement 5b, 5bc becomes bypass for making above-mentioned the 2nd decompressor 5ba, have and make cold-producing medium lead to the 3rd bypass of the non-return valve of indoor heat converter 6b, the 15th, use refrigerant piping compressor 1b, outdoor heat converter 3b, the 1st throttling arrangement 4b, the 2nd throttling arrangement 5b, indoor heat converter 6b, and the 2nd freeze cycle loop that connects and composes successively of storage heater 7b.In above-mentioned the 2nd freeze cycle loop, 23b serves as reasons and has internal diameter than thinner pipe arrangement 23bb of the internal diameter of discharging pipe arrangement 1bb and the 4th bypass of the non-return valve 23ba formation that is connected in series of pipe arrangement therewith, the one end is by piping connection 18b, its internal diameter and compressor 1b.Identical refrigerant piping 20b and the three-dimensional switching valve 21b of internal diameter of discharge pipe arrangement 1bb be connected with above-mentioned discharge pipe arrangement 1bb, the refrigerant piping 22b between its other end and the 1st, the 2nd throttling arrangement 4b, 5b is connected.35b is the 72nd bypass in the 2nd freeze cycle loop 15, and it makes the 2nd freeze cycle loop compressor 1b.The part of discharging refrigerant by making decompressor (for example capillary) 26b and make switch valve (for example magnetic valve) 24b that this decompressor 26b becomes bypass to the refrigerant piping 22b bypass between the 1st, the 2nd throttling arrangement 4b, 5b the time, compressor 1a in heat exchange department 25a place that is arranged in this bypass and the 1st freeze cycle loop 14.Refrigerant suction pipe road 1aa carry out heat exchange.29b is the 5th bypass that constitutes with pressure-regulating valve 27b, and the one end is connected with the discharge pipe arrangement 1bb of the three-dimensional switching valve 21b that is connected compressor 1b, and the refrigerant piping 22b between its other end and the 1st, the 2nd throttling arrangement 4b, 5b is connected.

In by the above conditioner of forming, at first the action in the 1st freeze cycle loop 14 is described below.In the 1st freeze cycle loop 14, when refrigerating operaton, (represent refrigerant flow direction with the heavy line arrow among the figure), from compressor 1a.The high-temperature high-pressure gas refrigerant three-dimensional switching valve 21a and the four-way switching valve 2a that discharge, when carrying out heat exchange at outdoor heat exchanger 3a with the outdoor air that outside pressure fan 9a sends here, make the gas refrigerant condensation liquefaction in view of the above, and make the low temperature low pressure liquid refrigerants that obtains reducing pressure and form with the 1st decompressor 4aa of the 1st throttling arrangement 4a.On the other hand, from compressor 1a.The part of the high-temperature high-pressure gas refrigerant of discharging is by the 6th bypass 35a, heat exchange department 25b in the 2nd freeze cycle loop 15, carry out heat exchange with the low pressure refrigerant in the compressor 1b that will be inhaled into the 2nd freeze cycle loop 15, make this suck cold-producing medium and obtain heating and vaporization fully, himself is condensation liquefaction then, and obtain decompression and become low temperature low pressure liquid refrigerants with decompressor 26a, then with the 1st, the 2nd throttling arrangement 4a, refrigerant piping 22a between 5a converges, and the 3rd bypass 5ac by the 2nd throttling arrangement 5a enters indoor heat converter 6a, carry out heat exchange with the room air of sending here from indoor blower 8, when making room air obtain cooling off, make the liquid refrigerant evaporates vaporization in view of the above, turn back to compressor 1a by four-way switching valve 2a and storage heater 7a.With the freeze cycle loop that constitutes.In addition, as compressor 1a.High side pressure become the authorized pressure value when above because of certain reason, the pressure-regulating valve action, thus compressor 1a.High side pressure maintain setting.

In addition, when heating operation, (among the figure, represent refrigerant flow direction), from compressor 1a with the fine line arrow.The high-temperature high-pressure gas refrigerant of discharging is by three-dimensional switching valve 21a and entered indoor heat converter 6a to the four-way switching valve 2a of heating operation conversion, carry out heat exchange with the room air of sending here from indoor pressure fan 8, when making room air obtain heating, make the gas refrigerant condensation liquefaction in view of the above, and make with the 2nd decompressor 5aa of the 2nd throttling arrangement 5a and to obtain decompression and become low temperature low pressure liquid refrigerants.On the other hand, from compressor 1a.The part of the high-temperature high-pressure gas refrigerant of discharging is passed through the 6th bypass 23a, heat exchange department 25b and the compressor 1b that will be inhaled into the 2nd freeze cycle loop 15 in the 2nd freeze cycle loop 15.Interior low pressure refrigerant carries out heat exchange, make the cold-producing medium of this suction obtain heating vaporization fully, make himself condensation liquefaction, and obtain decompression and become low temperature low pressure liquid refrigerants with decompressor 26a, with the 1st, the 2nd throttling arrangement 4a, refrigerant piping 22a between 5a converges, and the 2nd bypass 4ac inlet chamber outside heat exchangers 3a by the 1st throttling arrangement 4a, carry out heat exchange with the outdoor air of sending here from outside pressure fan 9a, heat absorption from outdoor air and make outdoor air cooling time, make the liquid refrigerant evaporates vaporization in view of the above, by four-way switching valve 2a, storage heater 7a turns back to compressor 1a., to constitute the freeze cycle loop.In addition, as compressor 1a.High side pressure because of certain reason becomes the authorized pressure value when above, make pressure-regulating valve 27a action, compressor 1a.High side pressure maintain the value of regulation.

In addition, when carrying out such heating operation, it is low for example to work as outside air temperature, on outdoor heat exchanger 3a, produce frosting, when being necessary to carry out Defrost operation (among the figure, the with dashed lines arrow is represented refrigerant flow direction), 2a is under the heating operation state at the four-way switching valve, and three-dimensional switching valve 21a is changed to the 4th bypass 23a one side.Make from compressor 1a.The high-temperature high-pressure gas refrigerant of discharging by three-dimensional switching valve 21a with the 1st, the 2nd throttling arrangement 4a, 5a between pipe arrangement 23aa, the non-return valve 23ab of the 4th bypass 23a that links to each other of refrigerant piping 22a flow into this refrigerant piping 22a, and the 2nd bypass 4ac inflow outdoor heat exchanger 3a by the 1st throttling arrangement 4a.At this moment, outside pressure fan 9a is shut down.And make above-mentioned high-temperature gas cold-producing medium and carry out heat exchange, and make above-mentioned frost melts in the lip-deep frosting of outdoor heat exchanger 3a.Gas refrigerant condensation liquefaction on the other hand, 2a enters storage heater 7a by the four-way switching valve, turns back to compressor 1a by heat exchange department 25a again.When Defrost operation, because the switch valve 24b of the 7th bypass 35b in the 2nd freeze cycle loop 15 of another side is opened, so at above-mentioned heat exchange department 25a, the compressor 1b in the 2nd freeze cycle loop 15.High-temperature high-pressure refrigerant and the refrigerant suction pipe road 1aa in the 1st freeze cycle loop 14 carry out heat exchange.In addition, as compressor 1a.High side pressure become the authorized pressure value when above, make control valve 27a action, compressor 1a.High side pressure maintain below the setting.

As mentioned above, when defrosting,, there is not the heat loss that causes because of conversion in view of the above owing to not making four-way switching valve 2a enter Defrost operation to the refrigerating operaton conversion from heating operation.In addition, owing to do not make the cryogenic liquid cold-producing medium by indoor side heat exchanger, thereby eliminated unborn to the indoor problem that blows out cold wind.Can only depend on the refrigerant loop of another side just can carry out heating operation, and heating operation is interrupted because of defrosting, so also can increase indoor comfort.

In addition, in common refrigeration, heating operation, owing to use heat exchange department 25a, 25b to make relative compressor 1a.1b。Suction pipe arrangement 1aa, 1ab and from compressor 1a.，1b。The high-temperature high-pressure gas refrigerant of discharging carries out heat exchange mutually, returns compressor 1a so can prevent liquid.，1b。Phenomenon take place, thereby can prevent from compressor, to carry out liquid compression.

And then, because it is thinner than the internal diameter of discharging pipe arrangement 1ba that the internal diameter of the pipe arrangement 23aa of a part that constitutes the 4th bypass 23a is formed, thereby produce the pressure loss, make compressor 1a.High side pressure rise, input increases, and makes compressor 1a.Ability increase, thereby might shorten the Defrost operation time.

In addition, in Defrost operation, by making from the compressor 1b in the 2nd freeze cycle loop 15 of another side.The bypass 35b of discharge side line 1bb branch in switch valve 24b open, and high-temperature high-pressure refrigerant is provided to heat exchange department 25a, be attracted to compressor 1a so can make.Low temperature low pressure liquid refrigerants fully absorb heat and vaporize, thereby can prevent liquid and return compressor 1a.Phenomenon, and then, because low pressure rises, and make compressor 1a.Ability increase, have the advantage that can further shorten the Defrost operation time.

In addition, because at compressor 1a.High side pressure become the authorized pressure value when above, make the pressure-regulating valve 27a action of the 5th bypass 29a, the high-pressure of the compressor of ground, place defrosting running one side maintains below the setting during the defrosting running, thereby the rapid rising of high side pressure before the defrosting that the 4th bypass high side pressure effect of increasing causes in the time of making because of Defrost operation is about to end, before the output temperature of outdoor heat converter reaches defrosting temperature at the end,, high pressure is prevented because of disconnecting the operation that abends that causes.

And then the pressure-regulating valve 27a of this 5th bypass 29a is in refrigeration and heating operation, as compressor 1a.High side pressure also begin action when above because of certain reason becomes the authorized pressure value, this high side pressure is maintained certain value, thereby can prevents to disconnect the operation that abends that causes because of high pressure.

More than the action in the 1st freeze cycle loop 14 is narrated because also can similarly freeze with the 1st freeze cycle loop 14 in the 2nd freeze cycle loop 15, heating and Defrost operation, thereby save its explanation.

In addition, be that non-return valve and internal diameter ratio piston compressor are discharged that the thinner pipe arrangement of pipe arrangement internal diameter is connected in series and the 4th bypass that constitutes is narrated in the above-described embodiments, yet be not limited to this, also can only constitute with the internal diameter pipe arrangement thinner than above-mentioned discharge pipe arrangement, and then also can be arranged to make the 4th bypass only to constitute than discharging the thinner pipe arrangement of pipe arrangement internal diameter with internal diameter, pressure-regulating valve and this pipe arrangement are connected in parallel.

According to the above, if adopt conditioner of the present invention, can have following advantage, promptly carry out heat exchange by zone heat exchangers and suction pipe arrangement owing to constitute a part that makes from the next high-temperature high-pressure gas refrigerant of compressor, so when can prevent that liquid refrigerant from returning compressor, can be under the heating operation state at the four-way switching valve, thereby Defrost operation is carried out in the conversion of carrying out the three-dimensional switching valve, so can prevent to produce the unborn heat loss that causes because of the conversion of carrying out the four-way switching valve, and might sweep in the past exist to the indoor problem such as cold wind that blows out, so many outstanding effects are arranged.And then owing to when Defrost operation, making gas refrigerant discharge the bypass of the thinner pipe arrangement of pipe arrangement internal diameter by having the internal diameter ratio from the compressor discharge, high-pressure is increased, compressor capacity is improved, thereby also have advantages such as to shorten the Defrost operation time.

And then in refrigeration, during heating operation, rise when excessive at Defrost operation mesohigh pressure, by being maintained necessarily, can prevent the operation that abends that causes because of the high pressure disconnection with pressure-regulating valve control valve high-pressure.

In addition, even when indoor temperatures such as heating operation has just begun are low, by detecting indoor temperature with the indoor Temperature Detector as in the following occasion of setting, make and return the heating operation certain hour, or the 8th bypass is disconnected reach and cold-producing medium does not take place in indoor heat converter be detained, thereby the high pressure that has in the time of preventing the lack of refrigerant phenomenon and carry out the heating operation conversion disconnects phenomenon in the effect of possible trouble.

By relevant conditioner of the present invention discussed above, can the four-way switching valve that carry out the refrigerant loop conversion be under the heating operation state owing to constitute, the conversion of advancing the three-dimensional switching valve is to carry out Defrost operation, thereby can prevent originally the generation of the heat loss that causes when carrying out the conversion of four-way switching valve, and might eliminate unborn to the indoor problems such as cold wind that blow out, and then owing to when Defrost operation, making cold-producing medium discharge the bypass of the thinner pipe arrangement of pipe arrangement internal diameter by having the internal diameter ratio from the compressor discharge, high-pressure is increased, compressor capacity is improved, can shorten the Defrost operation time.

In addition, since between the discharge side line of compressor and three-dimensional switching valve by pressure-regulating valve with the 1st with the 2nd throttling arrangement between be connected, thereby the Defrost operation that causes because of above-mentioned bypass high side pressure effect of increasing can make Defrost operation the time close to an end before high side pressure sharply raise, when the outdoor heat converter output temperature reaches defrosting and finishes before the temperature, when disconnecting the operation that abends cause and be prevented because of high pressure, even when heating operation, also can maintain high side pressure in the setting, make because of high pressure disconnects the operation that abends that causes to be prevented.And then since the part of discharge gas refrigerant that constitutes the compressor make the 1st and the 2nd freeze cycle loop respectively by decompressor with make this decompressor become the switch valve of bypass the above-mentioned the 1st, form bypass between the 1st and the 2nd throttling arrangement in the 2nd each freeze cycle loop, perhaps make the part of the compressor discharge gas refrigerant in the 1st and the 2nd freeze cycle loop form bypass to the suction side of each compressor respectively by switch valve, and in this bypass, make and to carry out heat exchange with the refrigerant suction pipe road of the compressor in the freeze cycle loop of above-mentioned relative another side, thereby obtain when can prevent liquid and return the compressor phenomenon effect that rises defrosting time is shortened more because of low pressure.

To brief description of drawings.

Fig. 1 is the loop diagram of expression one embodiment of the invention conditioner cold-producing medium, Fig. 2, Fig. 3 are respectively the refrigerant loop figure of other embodiment of expression the present invention, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are that expression respectively is according to the refrigerant loop figure of other embodiment of two freeze cycle, Fig. 9, Figure 10 are the refrigerant loop figure of conventional air adjusting device, among the figure

(1) be compressor, 1a is for sucking pipe arrangement, and 1b is for discharging pipe arrangement, 2 is the four-way switching valve, and 3 is outdoor heat converter, 4,5 is the 1st and the 2nd throttling arrangement, and 4a, 5a are the 1st and the 2nd decompressor (capillary), 4b, 5b are non-return valve, 4c, 5c is the 2nd and the 3rd bypass, and 6 is indoor heat converter, and 7 is storage heater, 8,9 is the indoor and outdoors pressure fan, and 12 is the 1st bypass, 23 is the 4th bypass, and 25 is zone heat exchangers, and 21 is the three-dimensional switching valve, 30 is pipe arrangement, and 27 is pressure-regulating valve, and 29 is the 5th bypass, 31 is the 8th bypass, and 32 is magnetic valve, and 33 is the indoor temperature detector, 14 is the 1st freeze cycle loop, and 15 is the 2nd freeze cycle loop, 1a.，1b。Be respectively compressor, 4ac, 4bc are respectively the 2nd bypass, 5ac, 5bc is respectively the 3rd bypass, and 21a, 21b are respectively three-dimensional switching valve, 23aa, 23ba is respectively the 4th bypass, and 35a is the 6th bypass, and 35b is the 7th bypass, 25a, 25b is respectively heat exchange department, 27a, 27b is respectively pressure-regulating valve, and 29a, 29b are respectively the 5th bypass, in addition, in each figure, same-sign is represented identical or suitable part.

Claims (7)

1, a kind of conditioner, possess with refrigerant piping compressor, the three-dimensional switching valve, the four-way switching valve, outdoor heat converter, the 1st throttling arrangement, the 2nd throttling arrangement, refrigerant loop that indoor heat converter and storage heater are connected in sequence and formation are from branch between above-mentioned three-dimensional switching valve and four-way switching valve, when might carry out heat exchange with the suction pipe arrangement that is connected above-mentioned storage heater and compressor chamber, the above-mentioned the 1st with the 2nd throttling arrangement between pipe arrangement one side form the 1st bypass that bypass is connected, it is characterized in that being provided with have make the 1st decompressor that constitutes above-mentioned the 1st throttling arrangement become bypass non-return valve the 2nd bypass with have be provided with when making the 2nd decompressor that constitutes the 2nd throttling arrangement become the 3rd bypass of non-return valve of bypass from above-mentioned compressor discharge pipe arrangement by the three-dimensional switching valve the above-mentioned the 1st with the 2nd throttling arrangement between pipe arrangement one side formation bypass be connected, have than more the 4th bypass of fine inner diameter of above-mentioned discharge pipe arrangement internal diameter, and then be provided with between the discharge pipe arrangement of above-mentioned compressor and three-dimensional switching valve and pass through pressure-regulating valve, the above-mentioned the 1st with the 2nd throttling arrangement between pipe arrangement one side form the 5th bypass that bypass is connected, constitute the above-mentioned three-dimensional switching valve of conversion, carry out Defrost operation thereby the 4th bypass is opened circuit.

2, device according to claim 1 is characterized in that in Defrost operation, when indoor temperature arrival setting is following, with certain hour at interval, makes above-mentioned three-dimensional switching valve be back into the heating operation mode.

3, device according to claim 1, it is characterized in that being provided with the 8th bypass that forms bypass from the pipe arrangement between indoor heat converter and the 2nd throttling arrangement by magnetic valve at storage heater, and will be in Defrost operation, become setting when following in indoor temperature, the 8th bypass is disconnected.

4, a kind of conditioner, possess respectively and make compressor with refrigerant piping, the four-way switching valve, outdoor heat converter, the 1st throttling arrangement, the 2nd throttling arrangement and indoor heat converter are connected to form successively respectively independently the 1st and the 2nd freeze cycle loop, and with common pressure fan to the above-mentioned the 1st, the above-mentioned indoor heat converter in the 2nd freeze cycle loop is blown, it is characterized in that being provided with having makes the 1st decompressor that constitutes above-mentioned the 1st throttling arrangement become bypass, with the 2nd bypass of the non-return valve that cold-producing medium is passed through along the outdoor heat converter direction with have and make when constituting the 2nd of above-mentioned the 2nd throttling arrangement and reduce device and become the 3rd bypass of non-return valve of bypass, also respectively the above-mentioned the 1st, with be provided with respectively on the 2nd freeze cycle loop from above-mentioned compressor discharge pipe arrangement by the three-dimensional switching valve with the above-mentioned the 1st with the 2nd throttling arrangement between be connected, have than more the 4th bypass of fine inner diameter pipe arrangement of above-mentioned discharge pipe arrangement internal diameter, the part that the above-mentioned compressor discharging refrigerant make above-mentioned the 1st freeze cycle loop meanwhile is set by switch valve when suction one side of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop forms bypass, formation can be carried out the 6th bypass of heat exchange in bypass midway with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop, with the part of the above-mentioned compressor discharging refrigerant that makes above-mentioned the 2nd freeze cycle loop by switch valve when suction one side of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop forms bypass, and constitute and to make the 7th bypass of carrying out heat exchange with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop midway in bypass, the above-mentioned three-dimensional switching valve that is formed on the freeze cycle loop that makes in the above-mentioned the 1st and the 2nd freeze cycle loop is changed to above-mentioned the 4th bypass one side, carries out Defrost operation thereby above-mentioned switch valve on above-mentioned another freeze cycle loop is opened.

5, a kind of conditioner, possess respectively and make compressor with refrigerant piping, the four-way switching valve, outdoor heat converter, the 1st throttling arrangement, the 2nd throttling arrangement and indoor heat converter are connected successively and form, separately independently the 1st, the 2nd freeze cycle loop, and with common pressure fan to the above-mentioned the 1st, above-mentioned indoor heat converter on the 2nd freeze cycle loop is blown, it is characterized in that being provided with and have the bypass that makes the 1st decompressor one-tenth that constitutes above-mentioned the 1st throttling arrangement, make the 2nd bypass of the non-return valve that cold-producing medium passes through along the outdoor heat converter direction and have when making the 2nd decompressor that constitutes above-mentioned the 2nd throttling arrangement become the 3rd bypass of non-return valve of bypass, also on the above-mentioned the 1st and the 2nd freeze cycle loop, be provided with respectively and discharge pipe arrangement from above-mentioned compressor, by the three-dimensional switching valve with the above-mentioned the 1st with the 2nd throttling arrangement between be connected, have than above-mentioned discharge pipe arrangement internal diameter more the 4th bypass and making of fine inner diameter with above-mentioned the 4th bypass be connected in parallel, in the time of the pressure-regulating valve opened according to the high side pressure of compressor, the part of above-mentioned compressor discharging refrigerant that setting makes above-mentioned the 1st freeze cycle loop by switch valve when suction one side of above-mentioned above-mentioned compressor on the 1st freeze cycle loop forms bypass, and be formed in the part of above-mentioned compressor discharging refrigerant that bypass makes it to carry out the 6th bypass of heat exchange with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop midway and make above-mentioned the 2nd freeze cycle loop by switch valve when suction one side of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop forms bypass, and constitute the 7th bypass that can make it to carry out heat exchange midway in bypass with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop, be formed in the above-mentioned three-dimensional switching valve that makes a freeze cycle loop in the above-mentioned the 1st and the 2nd freeze cycle loop and change, above-mentioned switch valve on above-mentioned another freeze cycle loop is opened and carried out Defrost operation to above-mentioned the 4th bypass one side.

6, a kind of conditioner, possess respectively and make compressor with pipe arrangement, the four-way switching valve, outdoor heat converter, the 1st throttling arrangement, the 2nd throttling arrangement and indoor heat converter be connected successively form separately independently the 1st, the 2nd freeze cycle loop, and constitute with common pressure fan to the above-mentioned the 1st, the above-mentioned indoor heat converter in the 2nd freeze cycle loop is blown, it is characterized in that on the above-mentioned the 1st and the 2nd freeze cycle loop, being provided with respectively to have making the 1st decompressor that constitutes above-mentioned the 1st throttling arrangement become bypass, make the 1st bypass of the non-return valve that cold-producing medium passes through to the outdoor heat converter direction, have and make the 2nd decompressor that constitutes above-mentioned the 2nd throttling arrangement become the 3rd bypass of the non-return valve of bypass, from above-mentioned compressor discharge pipe arrangement by the three-dimensional switching valve with the above-mentioned the 1st with the 2nd throttling arrangement between be connected, have than above-mentioned discharge pipe arrangement internal diameter more the 4th bypass of fine inner diameter the time, the part of above-mentioned compressor discharging refrigerant that setting makes above-mentioned the 1st freeze cycle loop is by decompressor and make switch valve that this decompressor becomes bypass when forming bypass between the above-mentioned the 1st and the 2nd throttling arrangement in above-mentioned the 1st freeze cycle loop, and the part of above-mentioned compressor discharging refrigerant that is formed in that bypass enables and the 6th bypass of heat exchange is carried out on the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop midway and makes above-mentioned the 2nd freeze cycle loop is by decompressor and make this decompressor become the switch valve of bypass when forming bypass between the above-mentioned the 1st and the 2nd throttling arrangement in above-mentioned the 2nd freeze cycle loop, and constitute the 7th bypass enable to carry out with the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 1st freeze cycle loop heat exchange midway in bypass, be formed in the above-mentioned three-dimensional switching valve that makes a freeze cycle loop in the above-mentioned the 1st and the 2nd freeze cycle loop in the time of above-mentioned the 4th bypass one side conversion, the above-mentioned switch valve that makes another freeze cycle loop is opened and is carried out Defrost operation.

7, a kind of conditioner, possess respectively and make compressor with refrigerant piping, the four-way switching valve, outdoor heat converter, the 1st throttling arrangement, the the 1st and the 2nd freeze cycle loop independently separately that the 2nd throttling arrangement and indoor heat converter are connected successively and form, and constitute with common pressure fan to the above-mentioned the 1st, the above-mentioned indoor heat converter in the 2nd freeze cycle loop is blown, it is characterized in that respectively the above-mentioned the 1st, be provided with on the 2nd freeze cycle loop from above-mentioned compressor and discharge pipe arrangement by three-dimensional switching valve and the above-mentioned the 1st, be connected between the 2nd throttling arrangement, have than more the 4th bypass of fine inner diameter pipe arrangement of above-mentioned discharge pipe arrangement internal diameter, have make the 1st decompressor that constitutes above-mentioned the 1st throttling arrangement become bypass non-return valve the 2nd bypass and make the 2nd decompressor that constitutes above-mentioned the 2nd throttling arrangement become bypass non-return valve the 3rd bypass and from above-mentioned compressor discharge pipe arrangement and three-dimensional switching valve by pressure-regulating valve and the above-mentioned the 1st, in the time of the 5th bypass that is connected between the 2nd throttling arrangement, part that the above-mentioned compressor make above-mentioned the 1st freeze cycle loop discharges refrigeration also is set by decompressor with make this decompressor become the switch valve of bypass when forming bypass between the above-mentioned the 1st and the 2nd throttling arrangement in above-mentioned the 1st freeze cycle loop, and constitute can make bypass midway and the 6th bypass of heat exchange is carried out on the refrigerant suction pipe road of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop and make the part of discharging refrigerant of the above-mentioned compressor in above-mentioned the 2nd freeze cycle loop between the above-mentioned the 1st and the 2nd throttling arrangement in above-mentioned the 2nd freeze cycle loop, form bypass by decompressor and the switch valve that makes this decompressor form bypass in, and constitute and to make the 7th bypass of carrying out heat exchange in bypass midway with the refrigerant suction pipe road of the above-mentioned compressor in the 1st freeze cycle loop, be formed in the above-mentioned three-dimensional switching valve that makes a freeze cycle loop in the above-mentioned the 1st and the 2nd freeze cycle loop in the time of above-mentioned the 4th bypass one side conversion, the above-mentioned switch valve that makes above-mentioned another freeze cycle loop is opened and is carried out Defrost operation.

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