CN201293486Y - Composite condensation/vaporization double stage and double by-path hot water heat pump air-conditioning device - Google Patents

Abstract

The utility model discloses a composite condensation/evaporation double-stage, double-bypass hot water heat pump air conditioner, one end of a bypass control pipe (9) is directly connected with the outlet of a compressor (2), and the other end is connected with a four-way valve (3). Pneumatic control pipe inlet (10); the first working condition conversion bypass control pipe (27) communicates with the outlet of the compressor (2) at one end through the second control solenoid valve (26), and communicates with the four-way outlet at the other end The high-pressure side inlet (4) of the valve (3) is connected; the second working condition conversion bypass control pipe (28) communicates with the outlet of the four-way valve (3) through one end of the fourth control solenoid valve (22), and the other One end communicates with the outlet of the condenser (11). The utility model is a compound condensation/evaporation double-stage composite condensation/evaporation system that realizes good cooling and heating effects of the air conditioner and can recover and utilize condensation heat, and ensures stable operation of each component of the air conditioner, and is simple in structure, convenient in manufacture, low in cost, and convenient in operation. , Double bypass hot water heat pump air conditioning device.

Description

A composite condensing/evaporating two-stage, double-bypass hot water heat pump air-conditioning device

technical field

The utility model relates to a hot water heat pump air conditioner, in particular to a hot water heat pump air conditioner which is controlled by two stages and double bypasses, can conveniently realize air/water conversion, and recycles condensation heat.

Background technique

Air-conditioning devices are very important facilities in people's life and work, especially large-scale central air-conditioning devices are widely used in office spaces, hotels and shopping malls. At present, there are a large number of large, medium and small capacity heat pump/air conditioning and refrigeration equipment in China, such as household air conditioners, large, medium and small capacity refrigeration devices, and air-cooled and water-cooled heat pump devices. , an evaporator, and a liquid receiver. Inside the four-way valve, there is a pneumatic control tube used to control the reversing of the four-way valve spool. The inlet of the pneumatic control tube is connected to the inlet of the four-way valve and then connected to the outlet of the compressor. Most of the condensers of air-conditioning devices are cooled by air, and the cooling method is single, and when cooling in this way, a large amount of heat is directly discharged into the atmosphere, which not only pollutes the environment (heat pollution), but also wastes energy, and cannot be released into the air. Condensation heat in the recycling. Similar products at home and abroad have disadvantages such as complex refrigeration process transformation, frequent replacement of original components, which is not conducive to production and processing. At the same time, due to the addition of a new heat exchanger, the phenomenon of early evaporation occurs in the process of condensation heat recovery, which affects the cooling effect on the evaporation side and reduces the working capacity of the evaporator.

Utility model content

The technical problem to be solved by the utility model is to provide a composite condensing/evaporating dual air-conditioning system that realizes good cooling and heating effects of the air conditioner and can recycle the condensation heat and ensure the stable operation of the components of the air conditioner through two-stage bypass control. Level, double bypass hot water heat pump air conditioning unit.

In order to solve the above technical problems, the composite condensation/evaporation double-stage, double-bypass hot water heat pump air conditioning device adopted in the utility model includes a compressor, a four-way valve and its pneumatic control pipe, a condenser, an air-cooled evaporator, and a water-cooled evaporator , a heat recovery device is connected in series between the outlet of the compressor and the inlet of the high pressure side of the four-way valve; one end of the bypass control pipe is directly connected with the outlet of the compressor, and the other end is pneumatically controlled with the four-way valve The pipe inlet is connected, and the bypass control pipe of the first working condition is connected with the outlet of the compressor through the second control solenoid valve, and the other end is connected with the high-pressure side inlet of the four-way valve; the bypass of the second working condition is changed One end of the one-way control pipe communicates with the outlet of the four-way valve through the fourth control solenoid valve, and the other end communicates with the outlet of the condenser; one end of the condenser communicates with the four-way valve through the third control solenoid valve The outlet of the through valve is communicated, and the other end is communicated with the dry filter, throttle valve or capillary tube; one end of the air-cooled evaporator is connected in series with the described condenser through the ninth control solenoid valve, throttle valve or capillary tube, dry filter, The other end is connected to the inlet of the four-way valve; one end of the water-cooled evaporator is connected in series with the condenser through the eighth control solenoid valve, a throttle valve or a capillary tube, and a dry filter, and the other end is connected to the condenser through the fifth control solenoid valve. The outlet of the four-way valve is connected, one end of the seventh control solenoid valve is connected between the condenser and the dry filter, and the other end is connected between the water-cooled evaporator and the eighth control solenoid valve, One end of the sixth control solenoid valve is connected between the fifth control solenoid valve and the water-cooled evaporator, and the other end is connected with the inlet of the four-way valve.

The heat recovery device is a water heat recovery device.

Compared with the prior art, the utility model has the following advantages:

1. By adopting dual-working-condition switching bypass control tubes (the first working-condition switching bypass control tube and the second working-condition switching bypass control tube), the refrigerant bypass control technology can better ensure that condensation heat can be recovered while , to achieve good refrigeration, without affecting the work of the evaporator, and avoiding the phenomenon of early evaporation (condensation). Moreover, the ratio of condensation heat recovery can be controlled more flexibly, which is a useful supplement to the bypass fluid (pneumatic) control technology of the bypass control tube.

2. The bypass fluid (pneumatic) control technology of the bypass control tube is used to make the pressure distribution of the entire refrigeration process in the best state, and to maintain the stable operation of various components such as four-way valves in various heat pumps/air conditioners. Flexible conversion between working conditions. Realize that while the cooling and heating effect of the air conditioner is good, it can provide users with sufficient domestic sanitary hot water all year round, and ensure the stable operation of various components of the air conditioner.

3. The structure is simple, the function of the original valve is maintained, and the condensation heat released into the air can be recovered to the maximum extent to heat sanitary or domestic hot water or increase the temperature of the first-stage water cooling to make sanitary or domestic hot water.

4. Successfully overcome the shortcomings of complex refrigeration process transformation, frequent component replacement, and unfavorable production and processing existing in similar products at home and abroad. Adopt advanced and simple refrigeration process, less component changes, and easy product production and processing. Successfully realized air-cooled and water-cooled composite condensation, and flexibly switched between the two condensation modes.

5. The heat recovery device with input pipe and output pipe is connected in series between the outlet of the compressor and the inlet of the high pressure side of the four-way valve, and one end of the bypass control pipe is connected with the outlet of the compressor, and the other end is connected with the pneumatic control pipe of the four-way valve. The pilot valve on the top is connected, and cold water is injected into the heat recovery device with input pipe and output pipe. Air cooling can be used in the condenser, and water cooling + air cooling, or water cooling + water cooling composite condensation technology can be used at the condensing end.

6. The double evaporator mode of air-cooled evaporator and water-cooled evaporator on the evaporation side can make the unit switch between air-cooled and water-cooled modes to adapt to different environmental requirements. And the condensing side can also adopt different modes of air cooling or water cooling to realize different combinations of air cooling and water cooling.

7. The flexible transition of the water-cooled evaporator between cooling and heating conditions is realized by connecting the control solenoid valve, which not only simplifies the device, but also realizes the diversification of functions.

To sum up, the utility model is a composite air conditioner that realizes good cooling and heating effects of the air conditioner and can recycle the condensation heat, and ensures the stable operation of each component of the air conditioner. Condensing/evaporating two-stage, double-bypass hot water heat pump air conditioning unit.

Description of drawings

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment.

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is another structural diagram of the utility model.

Detailed ways

Referring to Fig. 1, the heat exchanger water storage tank 8 provided with the input pipe 6 and the output pipe 7 is connected to the water heat recovery device 1 through the delivery pump 5, and the water heat recovery device 1 is connected in series at the outlet of the compressor 2 through the first control solenoid valve 25 Between the inlet 4 of the high pressure side of the four-way valve 3; one end of the bypass control pipe 9 communicates with the outlet of the compressor 2, and the other end communicates with the inlet of the pilot valve 10 on the pneumatic control pipe of the four-way valve 3; One end of the through control pipe 27 communicates with the outlet of the compressor 2 through the second electromagnetic valve 26, and the other end communicates with the high-pressure side inlet 4 of the four-way valve 3; the second working condition conversion bypass control pipe 28 passes through one end of the fourth control electromagnetic valve 22 It communicates with the outlet of the four-way valve 3, and the other end communicates with the outlet of the condenser 11; one end of the condenser 11 communicates with the outlet of the four-way valve 3 through the third control solenoid valve 17, and the other end of the condenser 11 communicates with the dry filter 12, section Throttle valve or capillary tube 29 is connected in series; one end of air-cooled evaporator 13 is connected in series with condenser 11 through ninth control solenoid valve 21, throttle valve or capillary tube 29, dry filter 12, and the other end is connected with four-way valve 3 inlet through muffler 14; One end of the water-cooled evaporator 23 is connected in series with the condenser 11 through the eighth control solenoid valve 24, throttle valve or capillary tube 29, and dry filter 12, and the other end is connected to the outlet of the four-way valve 3 through the fifth control solenoid valve 18, and the seventh control One end of the solenoid valve 20 is connected between the condenser 11 and the dry filter 12, the other end is connected between the water-cooled evaporator 23 and the eighth control solenoid valve 24, one end of the sixth control solenoid valve 19 is connected to the fifth control solenoid valve 18 Between the water-cooled evaporator 23, the other end is connected to the inlet of the four-way valve 3 through the muffler 14, and the liquid reservoir 15 is communicated between the four-way valve 3 and the compressor 2

Referring to Fig. 1, the hot water heat pump air conditioner adopting the above-mentioned technology, under the cooling condition, the water heat recovery device 1, the four-way valve 3, the first working condition conversion bypass control pipe 27, the second working condition conversion bypass control pipe The pipe 28 , the bypass control pipe 9 and the condenser 11 constitute the first composite condensing module 16 . Inject cold water into the water heat recovery device 1 through the input pipe 6, and the cold water exchanges heat with the hot condensate from the outlet of the compressor 2 in the water heat recovery device 1. After the cooling water is heated, it is output from the output pipe 7 for the user to use. The effect of recovering condensation heat is achieved.

In the cooling condition, the fifth control solenoid valve 18 and the seventh control solenoid valve 20 are closed, and the first control solenoid valve 25 and the second control solenoid valve 26 cannot be opened at the same time. When hot water needs to be produced, the first control solenoid valve 25 is opened and the second control solenoid valve 26 is closed. The condensing end adopts a water heat recovery device 1, one end of the condenser 11 communicates with the outlet of the four-way valve 3 through the third control solenoid valve 17, and the other end of the condenser 11 communicates with the outlet of the four-way valve 3 through the fourth control solenoid valve 22; as required Open the third control solenoid valve 17 or the fourth control solenoid valve 22, but the third control solenoid valve 17 and the sixth control solenoid valve 22 cannot be opened simultaneously, and the other must be closed when one is opened. When the demand for sanitary hot water is large and it is necessary to recover all the condensation heat, the third control solenoid valve 17 is closed, the fourth control solenoid valve 22 is opened, and the heat recovery device 1 is used as a condenser. Just close the 4th control solenoid valve 22 when hot, open the 3rd control solenoid valve 17. When it is not necessary to produce hot water, the second control solenoid valve 26 is opened, the first control solenoid valve 25 is closed, and the fourth control solenoid valve 22 is closed, that is, the bypass control pipe 27 is bypassed for the first working condition conversion. After the refrigerant bypass control technology is adopted through the bypass control pipe 27 for the first operating mode change and the bypass control pipe 28 for the second operating mode change, it can better ensure good refrigeration while recovering the condensation heat without affecting The work of the evaporator avoids the phenomenon that the condenser 11 evaporates (condenses) in advance. Moreover, the ratio of condensation heat recovery can be controlled more flexibly, which is a useful supplement to bypass fluid (pneumatic) control technology. In this way, air-cooling, water-cooling + air-cooling, or water-cooling + water-cooling combined condensation technology can be used at the condensing end, which is suitable for all kinds of hot water heat pump air-conditioning devices (here is a small device as an example), the structure is simple, and the original valve parts are maintained. The function can maximize the recovery of condensation heat to heat sanitary or domestic hot water or increase the temperature of the first-stage water cooling to make sanitary or domestic hot water. An air-cooled evaporator 13 and a water-cooled evaporator 23 are connected in parallel at the evaporation end, but the sixth control solenoid valve 19 , the eighth control solenoid valve 24 and the ninth control solenoid valve 21 cannot be opened simultaneously.

Referring to Fig. 2, in the hot water heat pump air conditioner adopting the above technology, under the heating condition, the water heat recovery device 1, the four-way valve 3, the first working condition conversion bypass control pipe 27, the bypass control pipe 9 and the air cooling The evaporator 13 constitutes a second compound condensation module 30 .

In the heating condition, the fifth control solenoid valve 18 and the seventh control solenoid valve 20 are opened, and the sixth control solenoid valve 19 , the fourth control solenoid valve 22 and the eighth control solenoid valve 24 are closed. The first control solenoid valve 25 and the second control solenoid valve 26 cannot be opened simultaneously. The condensing end adopts a heat recovery device 1 and an air-cooled evaporator 13, where the air-cooled evaporator 13 becomes an air condenser. One end of the air-cooled evaporator 13 communicates with the throttle valve or capillary 29 through the ninth control solenoid valve 21, and the other end communicates with the four-way valve 3 through the muffler 14, and air cooling can be used at the same time as required (open the control solenoid valve 26, close the control solenoid Valve 25), water-cooled or air-cooled + water-cooled (open control solenoid valve 25, close control solenoid valve 26) combined with condensation technology, suitable for hot water heat pump air-conditioning devices with large power, simple structure, and maintains the function of the original valve parts , can maximize the recovery of the condensation heat released into the air to heat sanitary or domestic hot water or increase the temperature of the first-stage water cooling to make sanitary or domestic hot water. The condenser 11 and the water-cooled evaporator 23 are connected in parallel at the evaporation end, and the condenser 11 becomes an air-cooled evaporator here, but the third control solenoid valve 17, the fifth control solenoid valve 18, and the seventh control solenoid valve 20 cannot be opened at the same time. When using air-cooled evaporation, open the third control solenoid valve 17, close the fifth control solenoid valve 18 and the seventh control solenoid valve 20; when using water-cooled evaporation, open the fifth control solenoid valve 18 and the seventh control solenoid valve 20, close the fifth Three controls the solenoid valve 17. After adopting the refrigerant bypass control technology, it can be better guaranteed to realize good refrigeration while recovering the condensation heat, without affecting the work of the evaporator, and avoiding the phenomenon of premature evaporation (condensation) of the condenser 11 . Moreover, the ratio of condensation heat recovery can be controlled more flexibly, which is a useful supplement to bypass fluid (pneumatic) control technology.

This utility model successfully overcomes the shortcomings of complex refrigeration process transformation, frequent component replacement, and unfavorable production and processing existing in similar products at home and abroad. It adopts an advanced and simple refrigeration process, and the components are less modified, which is easy for product production and processing. , successfully realized the compound condensation of air cooling and water cooling, and flexibly switched the two condensation modes. The bypass control tube fluid control technology of the bypass control tube 9 adopted in the utility model makes the pressure distribution of the entire refrigeration process in the best state, and the refrigerant bypass control technology (the first working condition changes the bypass control tube 27 and the second Two working conditions change the bypass control pipe 28), so that the conversion between refrigeration-heat pump-hot water various working conditions is flexible. Realize that while the cooling and heating effect of the air conditioner is good, it can provide users with sufficient domestic sanitary hot water all year round, and ensure the stable operation of various components of the air conditioner.

Claims (2)

1, a kind of composite condensation/vaporization twin-stage, two by-path hot water heat pump air-conditioning device, comprise compressor (2), cross valve (3) and pneumatic control pipe, condenser and evaporimeter, between the high-pressure side inlet (4) of described compressor (2) outlet and cross valve (3), be in series with heat reclamation device (1); Bypass Control pipe (9) one ends directly are communicated with described compressor (2) outlet, the other end is communicated with described cross valve (3) pneumatic control tube inlet (10), it is characterized in that: the first operating mode conversion by-pass governing pipe (27) is communicated with described compressor (2) outlet by the second control magnetic valve (26) one ends, and the other end is communicated with the high-pressure side inlet (4) of described cross valve (3); The second operating mode conversion by-pass governing pipe (28) is communicated with the outlet of described cross valve (3) by the 4th control magnetic valve (22) one ends, and the other end is communicated with the outlet of described condenser (11); Described condenser (11) one ends are communicated with described cross valve (3) outlet by the 3rd control magnetic valve (17), and the other end is communicated with device for drying and filtering (12), choke valve or capillary (29); Air-cooled evaporator (13) one ends are connected with described condenser (11) by the 9th control magnetic valve (21), choke valve or capillary (29), device for drying and filtering (12), and the other end is connected with described cross valve (3) inlet; Water-cooled evaporimeter (23) one ends are by the 8th control magnetic valve (24), choke valve or capillary (29), device for drying and filtering (12) is connected with described condenser (11), the other end is connected with described cross valve (3) outlet by the 5th control magnetic valve (18), the 7th control magnetic valve (20) one ends are connected between described condenser (11) and the described device for drying and filtering (12), the other end is connected between described water-cooled evaporimeter (23) and the 8th control magnetic valve (24), the 6th control magnetic valve (19) one ends are connected between described the 5th control magnetic valve (18) and the water-cooled evaporimeter (23), and the other end is connected with described cross valve (3) inlet.

2, composite condensation/vaporization twin-stage according to claim 1, two by-path hot water heat pump air-conditioning device is characterized in that: described heat reclamation device (1) is the hydro-thermal retracting device.

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