CN1158975A

CN1158975A - refrigerator

Info

Publication number: CN1158975A
Application number: CN96101885A
Authority: CN
Inventors: 今泉利正
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 1995-03-08
Filing date: 1996-03-08
Publication date: 1997-09-10
Anticipated expiration: 2016-03-08
Also published as: TW368595B; KR0163120B1; CN1105278C; KR960034947A; JPH08247622A

Abstract

The invention makes the evaporator thinner and improves the space efficiency. After the cool air is generated in the cooler compartment 14, the cool air is supplied from the cooler compartment 14 to the refrigerator compartment and the freezer compartment. The cold air with low water content in the freezing chamber returns to the cooler chamber 14 through the opening 31b, and exchanges heat with the freezing chamber evaporator 22 whose cooling fins are closely spaced, thereby being efficiently cooled. The cold air with a high moisture content in the refrigerating chamber returns to the cooler chamber 14 through the opening 32 b, and exchanges heat with the evaporator 21 for the refrigerating chamber with wide cooling fin spacing. Frost forms on the evaporator 21 for a refrigerator. Therefore, the cooling efficiency of the cold air by the evaporator 26 improves.

Description

Refrigerator

The present invention relates to make and return the cooler chamber at the cold air of the indoor generation of cooler from refrigerating chamber and refrigerating chamber and constitute the refrigerator of circulation.

In refrigerator, provide a kind of as shown in figure 13 kind of refrigeration cycle unit 2 is configured in refrigerator (to call compressor top loaded type refrigerator in the following text) above the refrigerator body 1.Under the situation of this structure, in kind of refrigeration cycle unit 2, form cooler chamber 3 and Machine Room 4, cooler 3a is housed in cooler chamber 3, when cooling fan starts, supply with the refrigerating chamber and the refrigerating chamber of refrigerator body 1 by the cool-air feed pipe at the cold air of the indoor generation of cooler, after making the refrigerator inside cooling, turn back in the cooler chamber 3 by cold air muffler 5 from each chamber again.

Figure 14 illustrates the existing structure of cooler chamber 3, symbol 6a returns air (to call the R return-air in the following text from what refrigerating chamber was discharged, R represents with arrow) cold airflow inlet, symbol 6b is the cold airflow inlet that returns air (to call the F return-air in the following text, F represents with arrow) of discharging from refrigerating chamber.When having this structure, the inter fin space P of cooler 3a upstream portion sets widelyer than remainder, worsens so can prevent cooler 3 frostings that the many R return-airs of moisture cause.

But above-mentioned existing structure is because the inter fin space P of cooler 3a upstream portion is wide, and institute thinks and guarantee necessary film-cooled heat, must increasing cooler 3a.Therefore, the space efficiency of refrigerator reduces, and particularly resembles compressor top loaded type refrigerator, and kind of refrigeration cycle unit 2 is in visibility point on the profile, and commercialization is had any problem.And refrigerator body 1 and kind of refrigeration cycle unit 2 as product height in accordance with regulations (value that is limited by installing space or products in circulation problem) are made, the problem that then also exists the internal capacity of refrigerator body 1 to reduce.

The present invention In view of the foregoing develops, and its objective is provides a kind of refrigerator that space efficiency is improved along with the miniaturization of cooler.

Refrigerator of the present invention has refrigerating chamber, refrigerating chamber and cooler chamber, cooler is indoor installed have the refrigerant flow path constituting body and in accordance with regulations spacing arrange fin that is fixed on this flow-path constituting body and the cooler that produces the cold air of supplying with above-mentioned refrigerating chamber and refrigerating chamber, above-mentioned cooler chamber is communicated with and has the cold gas exhausting outlet of the cold air discharge that above-mentioned cooler is produced respectively with above-mentioned refrigerating chamber and refrigerating chamber, make the cold air of above-mentioned refrigerating chamber return the 1st cold airflow inlet of cooler chamber, and the cold air that makes refrigerating chamber returns the 2nd cold airflow inlet of cooler chamber, above-mentioned cooler by the 1st cooler that is used to cool off the cold air that flows into from the 1st cold airflow inlet and the 2nd cooler that is used to cool off the cold air that flows into from the 2nd cold airflow inlet constitute, the inter fin space of above-mentioned the 2nd cooler is less than the inter fin space of the 1st cooler that is arranged in the cold airflow upstream portion by above-mentioned the 1st cooler.

Also can make the cold air interflow of refrigerating chamber and refrigerating chamber, constitute cooler by the 1st cooler that is positioned at upstream side with respect to this cold airflow and the 2nd cooler that is positioned at the downstream, and the inter fin space that makes the 2nd cooler is less than the inter fin space that is arranged in by the cold airflow upstream portion of above-mentioned the 1st cooler.

Also have and be used to remove the 1st and the 2nd thermal source of the frosting on the above-mentioned the 1st and the 2nd cooler and the heating control device of controlling the heating of these two thermals source, heating is once in per 1 circulation of compressor for above-mentioned thermal source.And the heating control device makes the be separated by stipulated time heating of the 2nd thermal source.

The the above-mentioned the 1st and the 2nd cooler along continuous straight runs is set up in parallel, and the refrigerating circulatory device that will comprise above-mentioned cooler is configured in the top of refrigerator body.The 1st cooler that along continuous straight runs is set up in parallel and the refrigerant flow path constituting body of the 2nd cooler all have the U-shaped bend separately, and the U-shaped bend that is positioned at the U-shaped bend of the 1st cooler of a side close to each other and the 2nd cooler is interconnected with respect to cold airflow.

Cold air in the indoor generation of cooler is supplied with refrigerating chamber and refrigerating chamber from the cooler chamber.And the cold air of refrigerating chamber (cold air that moisture is few) flows into the cooler chamber through the 2nd cold airflow inlet, and carries out heat exchange by the 2nd intensive cooler of inter fin space.

The cold air of refrigerating chamber (cold air that moisture is many) flows into the cooler chamber through the 1st cold airflow inlet, and carries out heat exchange by the 1st wide cooler of inter fin space.At this moment, return moisture frosting on the 1st cooler in the cold air.Therefore, the cold air of refrigerating chamber and refrigerating chamber carries out heat exchange with the 2nd and the 1st cooler respectively, though particularly the cold air of the refrigerating chamber that temperature is low is by the 2nd strong cooler of the big heat-exchange capacity of inter fin space density, frosting is few less but because of moisture, do not have problems even inter fin space is intensive yet, because the cooling effectiveness of cooler improves, cooler is able to miniaturization, and consequently the space efficiency of refrigerator improves.

Cold air in refrigerating chamber and the cold air in the refrigerating chamber turn back to the 1st cooler and the 2nd cooler from the 1st and the 2nd cold airflow inlet respectively by the 1st and the 2nd cold air muffler of independent setting, in this case owing to make cold air in the refrigerating chamber and the cold air in the refrigerating chamber separately return cooler clearly, so cooler further improves the cooling effectiveness of cold air.

Make cold air and the interflow of the cold air in the refrigerating chamber in the refrigerating chamber, and the 1st wide cooler of the cold air that makes inflow and the inter fin space that is positioned at this cold airflow upstream side carries out heat exchange and frosting on the 1st cooler, make then by the 2nd narrow cooler of cold air behind the 1st cooler and the inter fin space that is positioned at the downstream and carry out heat exchange, can make the cooler miniaturization in this case, improve the space efficiency of refrigerator.

The 1st cooler of easy frosting is heated with the 1st thermal source, the frost that condenses is dissolved, and, in per 1 circulation of compressor, make the heating of the 1st thermal source once, so the 1st cooler is just defrosted once.Therefore, prevented that the frosting of the 1st cooler from worsening, cooling effectiveness also improves thereupon.

The 2nd thermal source that heats the 2nd cooler is to be separated by the stipulated time heating once, because the 2nd cooler is not without the heating of control ground, so cooling effectiveness further improves.

The 1st cooler and the 2nd cooler along continuous straight runs are set up in parallel, and the 1st cooler and the 2nd cooler are compared by the situation of above-below direction configuration, can make the cooler slimming.

The refrigerating circulatory device that will comprise compressor, cooler is configured in refrigerator body top when constituting compressor top loaded type refrigerator, is very favourable to the refrigerator of realizing slimming.

Make with the U-shaped bend of the 1st cooler near the configuration of staggering of the U-shaped bend of the 2nd cooler of a side, be formed on the form of insertion the 2nd cooler U-shaped bend between the U-shaped bend of the 1st cooler, can reduce the width dimensions of cooler.

Fig. 1 is the cross-sectional view of the kind of refrigeration cycle unit of expression the present invention the 1st embodiment.

Fig. 2 is the expression refrigerating chamber is used evaporimeter with evaporimeter and refrigerating chamber a vertical view.

Fig. 3 is the expression refrigerating chamber is used the configuration relation of evaporimeter with evaporimeter and refrigerating chamber a oblique view.

Fig. 4 is the schematic diagram of refrigerating circulatory device connection status.

Fig. 5 is the side-looking profilograph of expression general structure.

Fig. 6 is the profilograph of facing of expression general structure.

Fig. 7 is the cross-sectional view of expression cold duct.

Fig. 8 is the amplification side-looking profilograph of Machine Room.

Fig. 9 is the profilograph of facing of expression kind of refrigeration cycle unit.

Figure 10 is the simple block diagram of expression electrical structure.

Figure 11 is the timing diagram of expression compressor operation and Glass tube heater operation.

Figure 12 is the figure of expression the present invention 2nd embodiment suitable with Fig. 1.

Figure 13 is the figure of the expression conventional example suitable with Fig. 9.

Figure 14 is the figure suitable with Fig. 1.

Symbol description:

The 11-refrigerator body, the 11e-refrigerating chamber, the 11g-refrigerating chamber, 14-cooler chamber, the 16-freezing cycle device, the 17-compressor, 21-refrigerating chamber evaporimeter (the 1st cooler), 22-refrigerating chamber evaporimeter (the 2nd cooler), 24a ', 24b '-U-shaped bend, 26-evaporimeter (cooler), 28-cold air air outlet (cold gas exhausting outlet), 31-F cold air muffler (the 2nd cold air muffler), 31b-opening (the 2nd cold airflow inlet), 32-V cold air muffler (the 1st cold air muffler), 32b-opening (the 1st cold airflow inlet), 34-control device (heating control device), 37-Glass tube heater (the 1st thermal source), 38-Glass tube heater (the 2nd thermal source).

Below, according to Fig. 1 to Figure 11 the 1st embodiment of the present invention is described.At first, in Fig. 5, refrigerator body 11 is made the box-shaped of opening the door in the front, and the outer container 11b of the outside assembling steel plate system of the interior case 11a that makes at synthetic resin fills the heat-insulating materials such as urethane foam of the foaming of casting between interior case 11a and outer container 11b.

At the box house 11d of refrigerator body 11, form refrigerating chamber 11e, refrigerating chamber 11g, vegetable compartment 11h successively from upside.Above-mentioned refrigerating chamber 11e, refrigerating chamber 11g, vegetable compartment 11h separate the back with box house 11d with partition 11i and form, and positive uncovered the utilization of refrigerating chamber 11e closed with the door 12a of pivot suspension on refrigerator body 11.And refrigerating chamber 11g closes with the door 12b and the 12c of the positive uncovered portion of closing refrigerator body 11, and vegetable compartment 11h closes with a 12d of the positive uncovered portion of closing refrigerator body 11.In the bottom of refrigerating chamber 11e a cooling chamber 11f is being set also.

Be provided with

container

11k, 11m, 11n on

door

12b, 12c, 12d, the side of each

container

11k, 11m, 11n is provided with slide rail member (not drawing among the figure).And each slide rail member supporting can freely be pulled out on the inwall of refrigerator body 11.Therefore, when pulling out a 12b, 12c, 12d,

container

11k, 11m, 11n are drawn out with

door

12b, 12c, 12d.

The kind of refrigeration cycle unit 13 of box-shaped be located at refrigerator body 11 above, as shown in Figure 1, form the cooler chamber 14 that surrounds with adiabatic wall 14a on the right side of kind of refrigeration cycle unit 13, form Machine Room 15 in the left side.The compressor 17, condenser 18, drier 19 (with reference to Fig. 4), the capillary 20 (with reference to Fig. 4) that constitute refrigerating circulatory device 16 are housed in Machine Room 15, the refrigerating chamber that is equivalent to the 1st cooler are housed with evaporimeter 21 be equivalent to the refrigerating chamber usefulness evaporimeter 22 of the 2nd cooler in cooling chamber.

The compressor 17 of refrigerating circulatory device 16, condenser 18, drier 19, capillary 20, refrigerating chamber with evaporimeter 22, press the closed loop connection with evaporimeter 21, refrigerating chamber as shown in Figure 4, along with cold-producing medium circulates in refrigerating circulatory device 16 and produces cold air.Be connected a gas-liquid separator 23 with evaporimeter 21 and refrigerating chamber between with evaporimeter 22 at refrigerating chamber.This gas-liquid separator 23 is connected with compressor 17, carries out gas-liquid separation by the cold-producing medium of refrigerating chamber after with evaporimeter 21 by gas-liquid separator 23, and the gaseous refrigerant after the separation returns compressor 17.

Fig. 2 shows refrigerating chamber evaporimeter 21 and refrigerating chamber evaporimeter 22.As shown in the drawing, refrigerating chamber is to arrange the fin 25a and the 25b of fixing many sheets on pipe 24a that forms refrigerant flow path and 24b with evaporimeter 21 and refrigerating chamber with the structure of evaporimeter 22, and each manages the coiled pipe shape that 24a and 24b are made with a plurality of U-shaped bend 24a ' and 24b '.And, refrigerating chamber evaporimeter 21 and refrigerating chamber evaporimeter 22, as shown in Figures 2 and 3, its U-shaped bend 24a ' and 24b ' are configured to the state that staggers up and down in circulating direction (above-below direction of Fig. 2) position along cold-producing medium, make its phase non-overlapping copies.The evaporimeter (being equivalent to cooler) that symbol 26 expressions among Fig. 2 are made of with evaporimeter 22 with evaporimeter 21 and refrigerating chamber refrigerating chamber.

As shown in Figure 6, in the adiabatic wall 11j of the back of refrigerator body 11, be provided with the refrigerator pipe 27 that extends along left and right directions.And in the diapire of the roof of refrigerator body 11 and cooler chamber 14, burying cold air effuser 28 underground.As shown in Figure 1, the cold air air outlet 28a that is equivalent to cold gas exhausting outlet of this cold air effuser 28 is located at the central portion of cooler chamber 14, and its cold airflow outlet (not drawing among the figure) is located on the refrigerator pipe 27.

As shown in Figure 7, in refrigerator pipe 27, be positioned at its right part cooling fan arrangement 29 is installed.This cooling fan arrangement 29 is made of tube-axial fan 29a, cooling fan motor 29b and baffle plate 29c, and its center line α 1 disposes consistently with the center line α 2 (with reference to Fig. 2) of evaporimeter 26.When cooling fan arrangement 29 starts, the cold air in the cooler chamber 14 are taken out by cold air effuser 28 by cold air air outlet 28a guide in the refrigerator pipe 27.

In the adiabatic wall 11j of the back of refrigerator body 11, as shown in Figure 6, be positioned at its central portion and burying refrigerator pipe 30a (to call R refrigerator pipe 30a in the following text) underground.This R refrigerator pipe 30a is communicated with refrigerator pipe 27 and refrigerating chamber 11e, and the cold air that flows in the refrigerator pipe 27 is supplied with refrigerating chamber 11e through R refrigerator pipe 30a.In the adiabatic wall 11j of the back of refrigerator body 11, be positioned at its left-hand component and also burying refrigerator pipe 30b (to call F refrigerator pipe 30b in the following text) underground.This F refrigerator pipe 30b is communicated with refrigerator pipe 27 and refrigerating chamber 11g, and the cold air that flows in the refrigerator pipe 27 is supplied with refrigerating chamber 11g through F refrigerator pipe 30b.

In the adiabatic wall 11j of the back of refrigerator body 11, be positioned at that a little to left is burying refrigerator pipe 30c underground from central portion.This refrigerator pipe 30c (to call C refrigerator pipe 30c in the following text) is communicated with refrigerator pipe 27 and cooling chamber 11f, and the cold air that flows in the refrigerator pipe 27 is supplied with cooling chamber 11f through C refrigerator pipe 30c.

In the adiabatic wall 11j of the back of refrigerator body 11, also be provided with the refrigerator pipe 30d (to call R/V refrigerator pipe 30d in the following text) that is communicated with refrigerating chamber 11e and vegetable compartment 11h, supply with the cold air of refrigerating chamber 11e and cooling chamber 11f and supply with vegetable compartment 11h by R/V refrigerator pipe 30d.

In the adiabatic wall 14a of the back of refrigerator body 11 adiabatic wall 11j and cooling chamber 14, be positioned at its right part and burying cold air muffler 31 (to call F cold air muffler 31 in the following text) underground.This F cold air muffler 31 is equivalent to the 2nd cold air muffler, and as shown in Figure 1, one end opening 31a is positioned at refrigerating chamber 11g, and the other end opening 31b that is equivalent to the 2nd cold airflow inlet is positioned at the anterior right side of cooling chamber 14.The cold air of supply refrigerating chamber 11g attracted in the F cold air muffler 31 from the opening 31a of F cold air muffler 31, turns back in the cooling chamber 14 from opening 31b, carries out heat exchange with refrigerating chamber with evaporimeter 22 then.Arrow A among Fig. 1 and Fig. 2 represents to turn back to from the opening 31b of F cold air muffler 31 circulating direction of the F return-air in the cooling chamber 14.

In the adiabatic wall 14a of the back of refrigerator body 11 adiabatic wall 11j and cooling chamber 14, as shown in Figure 6, be positioned at that a little to right is burying cold air muffler 32 (to call V cold air muffler 32 in the following text) underground from central portion.This V cold air muffler 32 is equivalent to the 1st cold air muffler, and as shown in Figure 1, one end opening 32a is positioned at vegetable compartment 11h, and the other end opening 32b that is equivalent to the 1st cold airflow inlet is positioned at the anterior left side of cooling chamber 14.The cold air of supply vegetable compartment 11h attracted in the V cold air muffler 32 from the opening 32a of V cold air muffler 32, turns back in the cooling chamber 14 from opening 32b, carries out heat exchange with refrigerating chamber with evaporimeter 21 then.Arrow B among Fig. 1 and Fig. 2 represents to turn back to from the opening 32b of V cold air muffler 32 circulating direction of the R return-air in the cooling chamber 14.

In this case, because the moisture of the R return-air that returns from refrigerating chamber 11e, cooling chamber 11f, vegetable compartment 11h is more, so the refrigerating chamber of being jetted by the R return-air is with evaporimeter 21 easy frostings.Therefore, as shown in Figure 2, for preventing because of frosting results in blockage, refrigerating chamber with the fin 25a of evaporimeter 21 each other between Pr be set make the R return-air the upstream side broad and from upstream side downstream side reduce successively.As the inter fin space of supposing the upstream side (refrigerating chamber with the front portion of evaporimeter 21) of R return-air be Pr1, refrigerating chamber with the central portion inter fin space of evaporimeter 21 is that the inter fin space in the downstream (refrigerating chamber with the rear portion of evaporimeter 21) of Pr2, R return-air is Pr3, then should satisfy the relation of " Pr1＞Pr2＞Pr3 ".

On the other hand, because of the volume of refrigerating chamber 11g is little, and the switching frequency of

door

12b, 12c also lacks than refrigerating chamber 11e, so the moisture of the F return-air that returns from refrigerating chamber 11g is fewer.Therefore, refrigerating chamber is difficult to frosting with evaporimeter 22.For this reason, refrigerating chamber is set at big or small identical with Pr3 with the fin 25b spacing Pf to each other of evaporimeter 22, makes the intensive configuration of fin 25b.Though get " Pf=Pr3 " here, also can get " Pf＜Pr3 " according to the switch number of times of door, the difference of food.

As shown in figure 10, be provided with the temperature sensor 33a (to call F temperature sensor 33a in the following text) that detects freezer temperature in refrigerating chamber 11g, F temperature sensor 33a is connected with control device 34.This control device 34 is that main body constitutes with the microcomputer, and compressor 17 and cooling fan motor 29b are connected in control device 34.And control device 34 accompanies therewith according to the detection signal control compressor 17 of F temperature sensor 33a and the driving of cooling fan motor 29b, regulates the cold air supply to refrigerating chamber 11g, makes the temperature that keeps regulation in the refrigerating chamber 11g.

As shown in Figure 7, in refrigerator pipe 27, be provided with throttle setting 35.This throttle setting 35 has air door 35a (to call R air door 35a in the following text) and air door 35b (to call C air door 35b in the following text), as shown in figure 10, it connects with the air door driving mechanism 36 that comprises damper motor (not drawing among the figure), and air door driving mechanism 36 is connected in control device 34.In refrigerating chamber 11e, be provided with the temperature sensor 33b (to call R temperature sensor 33a in the following text) that detects refrigerating chamber 11e temperature, R temperature sensor 33b is connected with control device 34, control device 34 is according to the driving of the detection signal control R air door 35a of R temperature sensor 33b, accompany therewith, regulate the inlet aperture of R refrigerator pipe 30a.Thereby regulate cold air supply, make to keep set point of temperature in the refrigerating chamber 11e refrigerating chamber 11e.

Be provided with the temperature sensor 33c (to call C temperature sensor 33c in the following text) that detects freezer temperature in cooling chamber 11f, C temperature sensor 33c is connected with control device 34.Control device 34 is according to the driving of the detection signal control C air door 35b of C temperature sensor 33c, the inlet aperture of regulating C refrigerator pipe 30c therewith together.Thereby regulate cold air supply, make to keep set point of temperature in the cooling chamber 11f cooling chamber 11f.

, as shown in Figure 1, be provided with evaporimeter 21 and refrigerating chamber downside at refrigerating chamber as the Glass tube heater 37 of the 1st thermal source with as the Glass tube heater 38 of the 2nd thermal source with evaporimeter 22.This Glass tube heater 37 and 38 is used to dissolve at frost that refrigerating chamber condenses on evaporimeter 21 and the frost that condenses on evaporimeter 22 at refrigerating chamber, as shown in figure 10, is connected with the control device 34 that is equivalent to heating control apparatus.

As shown in figure 10, in cooling chamber 14, be provided with detect refrigerating chamber with the evaporimeter of the temperature of evaporimeter 21 with temperature sensor 39a (to call R evaporimeter temperature sensor 39a in the following text).The refrigerating chamber of last residual surplus frost was easily used evaporimeter 21 tops when this R evaporimeter was configured in defrosting with temperature sensor 39a, and was connected in control device 34.

The running timing of Figure 11 (a) expression compressor 17, (b) run timing of expression Glass tube heater 37.Here, when compressor 17 stopped, control device 34 made Glass tube heater 37 heatings just to Glass tube heater 37 energisings.And when the R evaporimeter reaches set point of temperature with the detection signal of temperature sensor 39a, make Glass tube heater 37 outages.

As shown in figure 10, in cooling chamber 14, be provided with the F evaporimeter temperature sensor 39b of detection refrigerating chamber with the temperature of evaporimeter 22.The refrigerating chamber of last residual surplus frost was easily used evaporimeter 22 tops when this F evaporimeter was configured in defrosting with temperature sensor 39b, and was connected in control device 34.And the running time of control device 34 accumulative total refrigerating circulatory devices 16, and as Figure 11 (c) be shown in and when arriving the stipulated time Glass tube heater 38 switched on, Glass tube heater 38 is generated heat.And when the detection signal of F temperature sensor 39b reaches set point of temperature, make Glass tube heater 38 outages.

In refrigerating circulatory device 16, as shown in Figure 4, be provided with refrigerating chamber with evaporimeter 21 bypass pipe 16a in parallel, a magnetic valve 16b is set on this bypass pipe 16.Magnetic valve 16b is connected in control device 34 (with reference to Figure 10), and when refrigerating chamber is defrosting with evaporimeter 21 (during Glass tube heater 37 energisings), control device 34 is opened magnetic valve 16b.Therefore, even compressor 17 runnings when refrigerating chamber defrosts with evaporimeter 21 also not to refrigerating chamber evaporimeter 21 the supply system cryogens, are only supplied with refrigerating chamber evaporimeter 22.

When refrigerating chamber does not defrost with evaporimeter 21 (during Glass tube heater 37 outages), control device 34 cuts out magnetic valve 16b, to refrigerating chamber evaporimeter 21 and refrigerating chamber evaporimeter 22 both sides the supply system cryogen simultaneously.

In cooling chamber 14, as shown in Figure 9, be provided with the drain pan 40 of quadrangular pyramid shape under with evaporimeter 22 with evaporimeter 21 and refrigerating chamber at refrigerating chamber, compile the defrost water of dripping with evaporimeter 22 with evaporimeter 21 and refrigerating chamber from refrigerating chamber with drain pan 40.As shown in Figure 5, in the adiabatic wall 11j of the back of refrigerator body 11, also burying scupper hose 41 underground.And this scupper hose 41 is connected with the drainpipe 40a of drain pan 40, and the defrost water of being compiled by drain pan 40 flow in the scupper hose 41 by drainpipe 40.

As shown in Figure 5, be provided with evaporating dish in the bottom of refrigerator body 11 and lay chamber 42, in evaporating dish is laid chamber 42, laying evaporating dish 43.The bottom of scupper hose 41 is stretched in the evaporating dish 43 after running through the back adiabatic wall 11j of refrigerator body 11, and the defrost water that flow in the scupper hose 41 flow in the evaporating dish 43.As shown in Figure 7, scupper hose 41 is configured in the rear side of cooling fan arrangement 29.

In Machine Room 15, a fan assembly 44 is set as shown in Figure 8.This fan assembly 44 is made of tube-axial fan 44a, fan motor 44b and baffle plate 44c, when fan assembly 44 starts, as shown by arrow C, extraneous air is sucked in the Machine Room 15, and extraneous air is by this sequentially feeding condenser 18 and compressor 17.Fan motor 44b is connected in control device 34 (with reference to Figure 10), is driven by control device 34 controls.The cooling unit that symbol 45 expression is made of kind of refrigeration cycle unit 13, refrigerating circulatory device 16, drain pan 40, fan assembly 44, symbol 45a represent to cover the plate part of the front side of cooling unit 45.

In the adiabatic wall 11j of the back of refrigerator body 11, burying fan air-supply pipe 46 underground.This fan air-supply pipe 46 is made of non-water-absorbing materials such as synthetic resin, and as shown in Figure 1, heated airflow inlet 46a is located at the back left comer of Machine Room 15, and as shown in Figure 6, warm braw flows out 46b and is located at the upper left corner, back that evaporating dish is laid chamber 42.The warm braw that is produced by fan assembly 44 supplies to the back left comer that evaporating dish is laid chamber 42 by fan air-supply pipe 46.

As shown in Figure 5, in removable mode plate part 47 is installed in the positive uncovered portion that evaporating dish is laid chamber 42.On plate part 47, form exhaust outlet, lay the warm braw of the back left comer input of chamber 42, on evaporating the water surface 43, flow through forward as shown by arrow D, be discharged into the outside from exhaust outlet from evaporating dish.

The following describes the effect of said structure.Temperature in refrigerating chamber 11g raises, and then control device 34 detects the temperature rising according to the detection signal of F temperature sensor 33a, and compressor 17 and cooling fan motor 29b are started.So the cold-producing medium that is enclosed in the refrigerating circulatory device 16 is compressed into high-temperature high-pressure state, supply to condenser 18.Then, the condensation, the absorption of 19 pairs of cold-producing medium contained humidities of drier, the capillary 20 that carry out 18 pairs of cold-producing mediums of condenser successively make cold-producing medium produce pressure drop and Flow-rate adjustment, supply with refrigerating chamber evaporimeter 21 through the cold-producing medium of pressure drop and Flow-rate adjustment.

Cold-producing medium is supplied with refrigerating chamber with behind the evaporimeter 21, and this cold-producing medium to the absorption of air heat of arrow B direction circulation, produces cold air from utilizing cooling fan arrangement 29 to take out to draw.Then, be fed into gas-liquid separator 23, carry out gas-liquid separation by gas-liquid separator 23 by the cold-producing medium of refrigerating chamber after with evaporimeter 21.Then, separated gaseous refrigerant returns compressor 17 (gas is pouring-in).Liquid refrigerant after being separated by gas-liquid separator 23 is fed into refrigerating chamber with evaporimeter 22, to the absorption of air heat of arrow A direction circulation, produces cold air from utilizing cooling fan arrangement 29 to take out to draw.

Behind refrigerating chamber usefulness evaporimeter 21 and refrigerating chamber usefulness evaporimeter 22 generation cold air, at first, cold air is delivered in the refrigerator pipe 27 by cold air effuser 28 from cooler chamber 14.Then, make cold air pass through R refrigerator pipe 30a, F refrigerator pipe 30b, C refrigerator pipe 30c, V/R refrigerator pipe 30d supply refrigerating chamber 11e, cooling chamber 11f, refrigerating chamber 11g, vegetable compartment 11h, cold air turns back in the cooler chamber 14 by F cold air muffler 31 and V cold air muffler 32 again.In this state, control device 34 makes to keep set point of temperature in refrigerating chamber 11e and the cooling chamber 11f according to the driving of the detection signal of R temperature sensor 33b and C temperature sensor 33c control to R air door 35a and C air door 35b.

The F return-air (return-air that moisture is few) that turns back in the cooler chamber 14 by F cold air muffler 31 carries out heat exchange with refrigerating chamber with evaporimeter 22.And the R return-air (return-airs that moisture is many) that turns back in the cooler chamber 14 by V cold air muffler 32 carries out heat exchange with refrigerating chamber with evaporimeter 21.Therefore, with concentrated area frosting on the evaporimeter 21, then be difficult to frosting on evaporimeter 22 at refrigerating chamber at refrigerating chamber.

Along with above operation temperature in the refrigerating chamber 11g is reduced after, control device 34 detects the temperature reduction according to the detection signal of F temperature sensor 33a and R temperature sensor 33b, compressor 17 and cooling fan motor 29b are quit work, and make Glass tube heater 37 heatings.So, condensing in refrigerating chamber and dissolve with the frost on the evaporimeter 21, defrost water flows to drain pan 40 from refrigerating chamber downwards with evaporimeter 21, accumulates in the evaporating dish 43 by scupper hose 41.

In this state, after fan assembly 44 starts, at first extraneous air is taken out and guided in the Machine Room 15, device 18 and compressor 17 heating that are condensed of this extraneous air produce warm braw.Then, this warm braw supplies to evaporating dish by fan air-supply pipe 46 and lays chamber 42, flows through forward on evaporating the water surface 43, is discharged into the outside from the exhaust outlet of plate part 47.

The warm braw that the water surface of utilization from evaporating dish 43 flows through makes the frosted water evaporation in the evaporation 43, and discharges from exhaust outlet with warm braw.After this, when condensing in that refrigerating chamber is removed fully with the frost on the evaporimeter 21 and when refrigerating chamber is raise with the temperature of evaporimeter 21, control device 34 detects refrigerating chamber with evaporimeter with the detection signal of temperature sensor 39a according to refrigerating chamber and raises with the temperature of evaporimeter 21, makes Glass tube heater 37 outages.

In addition, the running time of control device 34 accumulative total refrigerating circulatory devices 16, when reaching the stipulated time,, make Glass tube heater 38 heatings to Glass tube heater 38 energisings.So, condense in refrigerating chamber and dissolve, and flow in the evaporation 43 by scupper hose 41 from drain pan 40 with the frost on the evaporimeter 22, utilize the warm braw of supplying with by fan air-supply pipe 46 to make its evaporation.More than the various operations of Shuo Ming control device 34 are that formation software according to control device 34 carries out.

According to the foregoing description, by making the intensive refrigerating chamber of cold air (cold air that moisture is few) and inter fin space in the refrigerating chamber 11g carry out heat exchange with evaporimeter 22, can obtain high efficiency strong cooling performance with little appearance and size, by making the wide refrigerating chamber of cold air in the refrigerating chamber 11e (cold air that moisture is many) and inter fin space carry out heat exchange with evaporimeter 21, frosting on refrigerating chamber usefulness evaporimeter 21.Therefore, the cooling effectiveness of evaporimeter 26 improves, and makes evaporimeter 26 slimmings, thereby also makes kind of refrigeration cycle unit 13 and cooling unit 45 slimmings, and consequently the space efficiency of refrigerator improves.

Meanwhile, if owing to can adopt frosting with regard to inoperative biasing fin (being installed in the fin of managing 24a, 24b rear portion) on evaporimeter 22, so can realize the slimming more of the further raising of cooling capacity and freeze cycle unit 13, cooling unit 45 at the few refrigerating chamber of frosting degree.

Structurally also make the interior cold air of refrigerating chamber 11e carry out heat exchange with refrigerating chamber with evaporimeter 21, make the interior cold air of refrigerating chamber 11g carry out heat exchange with refrigerating chamber with evaporimeter 22 by the F cold air muffler 31 of independent setting by the V cold air muffler 32 of independent setting.Therefore, many R return-airs of moisture and the few F return-air of moisture can be separated clearly and supply with evaporimeter 26 respectively, so the cooling effectiveness of 26 pairs of cold air of evaporimeter improves more.

Structurally also make by refrigerating chamber and in cold air air outlet 28a, flow out, supply with refrigerating chamber 11e and refrigerating chamber 11g by cold air air outlet 28a with the cold air of evaporimeter 21 with by the cold air of refrigerating chamber with evaporimeter 22.Therefore, compare with the situation that the cold air by each evaporimeter 21 and 22 is provided with the cold air air outlet respectively, the space that cold air air outlet 28a occupies reduces.And, can also produce and make by refrigerating chamber with the temperature of evaporimeter 21 than higher cold air and the cold air that mixes with the cold gas of evaporimeter 22 by refrigerating chamber.

In addition, compressor 17 per 1 time the circulation in along with defrost operation also defrosts with evaporimeter 21 to the little refrigerating chamber of temperature effect.Therefore, prevented the frosting deterioration of refrigerating chamber reliably with evaporimeter 21, thus refrigerating chamber is reduced more with Pr1～Pr3 between the fin of evaporimeter 21, consequently, refrigerating chamber evaporimeter 21 miniaturization significantly (slimming).

In refrigerating circulatory device 16, also be provided with bypass pipe 16a, when refrigerating chamber is defrosting with evaporimeter 21, magnetic valve 16b opened.Therefore, even compressor 17 operations when refrigerating chamber defrosts with evaporimeter 21 also not to refrigerating chamber evaporimeter 21 the supply system cryogens, are only supplied with cold-producing medium refrigerating chamber evaporimeter 22.Therefore, even when refrigerating chamber defrosts with evaporimeter 21 at every turn, still can produce the cold air of q.s reliably.

The refrigerating chamber that is difficult to frosting is separated by the stipulated time defrosting once with evaporimeter 22.Therefore, because the 2nd cooler is not without the heating of control ground, so cooling effectiveness further improves.

Refrigerating circulatory device 16 is configured in the top of refrigerator body 11.Therefore, the present invention is applicable to compressor top loaded type refrigerator.So, make its kind of refrigeration cycle unit 13, cooling unit 45 be in visibility point even resemble the compressor top loaded type refrigerator, but but owing to kind of refrigeration cycle unit 13, cooling unit 45 slimmings, refrigerating plant 16 shared height dimension in the product height that is limited by installing space or products in circulation problem is reduced, so the internal volume of refrigerator inside 11d increases.Therefore, the slimming of above-mentioned evaporimeter 26 is extremely beneficial on promoting the sale of products.

Refrigerating chamber is set up in parallel with evaporimeter 22 along continuous straight runs with evaporimeter 21 and refrigerating chamber.Therefore, and refrigerator evaporator 21 and refrigerating chamber are compared by the situation of above-below direction configuration with evaporimeter 22, can be made evaporimeter 26 and cooling unit 45 slimmings.

In addition, also that refrigerating chamber is interconnected with the U-shaped bend 24b ' of evaporimeter 22 with the U-shaped bend 24a ' and the refrigerating chamber of evaporimeter 21.Therefore, refrigerating chamber is reduced with evaporimeter 21 and the refrigerating chamber width dimensions (left and right directions) with evaporimeter 22, and the space efficiency of refrigerator is improved.

To supply with gas-liquid separator 23 with the cold-producing medium behind the evaporimeter 21 by refrigerating chamber, the gaseous refrigerant after the separation returns compressor 17.Therefore, gas is injected change into to be possible, the cooling capacity of refrigerating circulatory device 16 improves.

According to Figure 12 the 2nd embodiment of the present invention is described below.With the identical member of above-mentioned the 1st embodiment, be marked with prosign, its explanation is omitted, and below only different members is described.In cooler chamber 14, be provided with partition 14b with evaporimeter 21 and refrigerating chamber between with evaporimeter 22 at refrigerating chamber, from the cold air that the opening 32b of V cold air muffler 32 returns, as shown by arrow E, supply with refrigerating chambers via refrigerating chamber with evaporimeter 21 and flow in the cold air air outlet 28a with evaporimeter 22 backs.

F cold air muffler 31 makes the cold air in the refrigerating chamber 11g return in the cooler chamber 14 by V cold air muffler 32 from F cold air muffler 31 at middle part and its interflow of V cold air muffler 32.And the cold air air outlet 28a of cold air effuser 28 is located at the downstream of refrigerating chamber with evaporimeter 22.

According to the foregoing description, the cold air in the vegetable compartment 11h, the cold air in the refrigerating chamber 11g, the cold air in the refrigerating chamber 11e return in the cooler chamber 14 by the opening 32b of V cold air muffler 32.And the wide refrigerating chamber of Pr carries out heat exchange with evaporimeter 21 between this cold air and fin.At this moment, in refrigerating chamber frosting on the evaporimeter 21.Then, the refrigerating chamber that Pf is intensive between cold air and fin carries out heat exchange with evaporimeter 22, is cooled off expeditiously.Therefore, the cooling effectiveness of 26 pairs of cold air of evaporimeter improves, so can make evaporimeter 26 slimmings, consequently the space efficiency of refrigerator improves.

In the above-mentioned the 1st and the 2nd embodiment, refrigerating chamber is set up in parallel along left and right directions with evaporimeter 22 with evaporimeter 21 and refrigerating chamber, but is not limited to this, for example also can be along fore-and-aft direction side by side or arranged side by side along the vertical direction.

In the above-mentioned the 1st and the 2nd embodiment, also cooling fan arrangement 29 is configured in the refrigerator pipe 27, but is not limited to this, for example also configurable back in cooler chamber 14.

In the above-mentioned the 1st and the 2nd embodiment, bottom in refrigerator body 11 also is provided with evaporating dish 43, warm braw is supplied with evaporating dish 43 by fan air-supply pipe 46, but be not limited to this, for example also evaporating dish 43 can be contained in the Machine Room 15, simultaneously on refrigerating circulatory device 16, connect radiating tube, utilize the heat heating evaporation ware 43 of this radiating tube.

As seen from the above description, refrigerator of the present invention has following effect.

The 2nd intensive cooler of the interior cold air of refrigerating chamber and inter fin space is advanced The row heat exchange makes the 1st wide cooling of the interior cold air of refrigerating chamber and inter fin space Device carries out heat exchange. Therefore, cooler improves institute to the cooling effectiveness of cold air Can make the cooler miniaturization, consequently the space efficiency of refrigerator improves.

Cold air in making refrigerating chamber and the cold air in the refrigerating chamber are by arranging respectively Cold air muffler and cooler carry out in the situation of heat exchange, make cooler pair The cooling effectiveness of cold air further improves.

Make cold air and the interflow of the cold air in the refrigerating chamber in the refrigerating chamber, and make this cold The 1st wide cooler of gas and inter fin space carries out heat exchange, then with heat radiation The 2nd intensive cooler of sheet spacing carries out heat exchange, can make in this case The cooler miniaturization, consequently the space efficiency of refrigerator improves.

By in per 1 circulation of compressor, the 1st cooler being removed Frost can prevent that the frosting of the 1st cooler from worsening, and cooling performance is improved. Right The 2nd cooler is separated by the stipulated time defrosting once, can make cooling effectiveness further Improve.

The 1st cooler and the 2nd cooler along continuous straight runs are disposed side by side, can Realize the slimming of cooler.

The refrigerating circulatory device that will comprise compressor, cooler is configured in refrigerator originally Body top and when consisting of compressor top loaded type refrigerator, to realizing the refrigerator of slimming Very favourable.

Make and the U-shaped bend of the 1st cooler the 2nd cooler near a side The configuration of staggering of U-shaped bend. Therefore, can reduce the width dimensions of cooler.

Claims

1. A kind of refrigerator, it is equipped with refrigerating room, freezer room and cooler room, has installed in the cooler room and has refrigerant flow path structure body and arranges and is fixed on the cooling fin on this flow path structure body at regular intervals and generates supply The cooler for the cold air in the refrigerator compartment and the freezer compartment is characterized in that the cooler compartment communicates with the refrigerator compartment and the freezer compartment respectively, and is equipped with a cold air discharge port for discharging the cold air generated by the cooler so that the above-mentioned The cold air in the refrigerating room returns to the first cold air inlet of the cooler room, and the second cold air inlet for returning the cold air in the freezer room to the cooler room. 1 cooler and a second cooler for cooling the cold air flowing in from the second cold air inlet, the fin pitch of the second cooler is smaller than that of the first cooler arranged at the upstream part of the cold air passing through the first cooler. heatsink spacing.

2. The refrigerator according to claim 1, characterized in that: a first cold air return duct for supplying cold air from the refrigerator compartment to the first cold air inlet and a second cold air return pipe for supplying cold air from the freezer compartment to the second cold air inlet 2 Air-conditioning returns to the trachea.

3. A kind of refrigerator, it is equipped with refrigerating room, freezer room and cooler room, and in the cooler room is installed to have refrigerant flow path structure body and arrange the cooling fins fixed on this flow path structure body at regular intervals and generate supply The cooler for the cold air in the refrigerator compartment and the freezer compartment is characterized in that the cooler compartment communicates with the refrigerator compartment and the freezer compartment respectively, and is provided with a cold air discharge port for discharging the cold air generated by the cooler, and for making the above-mentioned The cold air in the refrigerating room and the freezing room is returned to the cold air inlet of the cooler room, and the above-mentioned cooler is composed of a first cooler located on the upstream side of the cold air flowing in from the above-mentioned cold air inlet and a second cooler located on the downstream side of the cold air. In this configuration, the pitch of the fins of the second cooler is smaller than the pitch of the fins arranged in the upstream portion of the cold air flow passing through the first cooler.

4. The refrigerator according to claim 1 or 3, characterized in that: a first heat source for removing frost on the first cooler and a second heat source for removing frost on the second cooler are provided; A heat generation control device for controlling heat generation by the first heat source and the second heat source, wherein the heat generation control device causes the first heat source to generate heat once per cycle of the compressor.

5. The refrigerator according to claim 4, wherein the second heat source generates heat at predetermined intervals.

6. The refrigerator according to claim 1 or 3, wherein the first cooler and the second cooler are arranged side by side in a horizontal direction.

7. The refrigerator according to claim 6, wherein the refrigeration cycle device including the cooler is arranged on the upper part of the refrigerator body.

8. The refrigerator according to claim 6, wherein the refrigerant flow path constituent bodies in the first cooler and the second cooler each have a U-shaped bent portion, and the first cooler located on the near side The U-shaped bending part of the first cooler and the U-shaped bending part of the second cooler are arranged in a staggered manner relative to the cold air flow.