CN208704227U - Utilize the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting - Google Patents

Utilize the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting Download PDF

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Publication number
CN208704227U
CN208704227U CN201821350057.4U CN201821350057U CN208704227U CN 208704227 U CN208704227 U CN 208704227U CN 201821350057 U CN201821350057 U CN 201821350057U CN 208704227 U CN208704227 U CN 208704227U
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heat
coil
compressor
connect
phase
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刘忠宝
闫家文
郎辉伟
高文琪
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Beijing University of Technology
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Beijing University of Technology
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Abstract

The utility model discloses the heat pump assemblies of air-breathing reheating and hot gas bypass defrosting using compressor housing accumulation of heat, belong to the refrigerating fields such as heat pump, air-conditioning, refrigerator.The heat pump assembly includes compressor, indoor coil, outdoor coil pipe used, throttling set, gas-liquid separator and four-way reversing valve, small water tank, large water tank, phase-transition heat-storage packet, refrigerant coil, water coil and electric heater.Phase-transition heat-storage packet is added on the basis of existing heat pump and compressor housing waste heat is stored in accumulation of heat packet, in conjunction with phase-transition heat-storage packet inner refrigerant coil pipe and water coil, in cold environments to compressor air suction reheating, strengthens heating capacity;The continuously heating in defrosting, promotes indoor comfort degree;The setting of water coil can provide hot water for life simultaneously.

Description

Utilize the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting
Technical field
The utility model relates to the heat pump assemblies of air-breathing reheating and hot gas bypass defrosting using compressor housing accumulation of heat, belong to In refrigerating fields such as heat pump, air-conditioning, refrigerators.
Background technique
In cold climate, with the decline of outdoor environment temperature, thermo-compression evaporation temperature is reduced, and refrigerant evaporation is incomplete, Evaporating pressure decreases, and refrigerating effect per unit swept volume declines rapidly, and the heating capacity of heat pump is reduced therewith.Secondly when outdoor temperature drops When to certain value, compressor exhaust temperature can be more than the working range allowed, compressor automatic shutdown protection.Meanwhile with pressure The raising of contracting machine delivery temperature, viscosity sharply declines after lubricant is heated, and greasy property is deteriorated, and high frequent start and stop occurs, The less reliable of heat pump.
In addition heat pump system is at runtime since outdoor coil pipe used inner refrigerant evaporates so that surface temperature is lower, in outdoor disk Vapor near pipe surface in air is easy to condense into drop, then continues to be condensed into frost layer on outdoor coil pipe used surface, with The passage of time, frost layer are continuously increased, and outdoor coil pipe used surface is covered by frost layer, this will lead to heat exchange amount between air and evaporator Decline increases power consumption to influence heat pump system effect.Therefore, it is necessary to inhibit the appearance of frost layer.
On the other hand, most of heat pumps use reverse cycle defrosting currently on the market, and which will appear a large amount of in defrosting Cold air, to indoor infiltration, greatly reduces the comfort of indoor environment by indoor coil.
Utility model content
The purpose of this utility model is that adding phase-transition heat-storage packet on the basis of existing heat pump and by compressor housing waste heat It is stored in accumulation of heat packet, in conjunction with phase-transition heat-storage packet inner refrigerant coil pipe and water coil, in cold environments again to compressor air suction Heat strengthens heating capacity;The continuously heating in defrosting, promotes indoor comfort degree;The setting of water coil can provide life simultaneously Use hot water.
The technical solution adopted in the utility model is the air-breathing reheating and hot gas bypass defrosting using compressor housing accumulation of heat Heat pump assembly, which includes compressor 1, indoor coil 2, outdoor coil pipe used 3, throttling set 4,11 and of gas-liquid separator Four-way reversing valve 15, small water tank 5, large water tank 6, phase-transition heat-storage packet 12, refrigerant coil 13, water coil 14 and electric heater 16.
Between compressor 1, indoor coil 2, outdoor coil pipe used 3, throttling set 4, gas-liquid separator 11 and four-way reversing valve 15 Connected by refrigerant tubing;Compressor 1 is connect by four-way reversing valve 15 with indoor coil 2 and throttling set 4;Throttling Device 4 is equipped with two line structures, and the first line structure is connect with compressor 1, and the second line structure is commutated by outdoor coil pipe used 3 and four-way Valve 15 is connect with compressor 1;The circulatory system all the way is formed between compressor 1 and gas-liquid separator 11.
The outside of compressor 1 is equipped with refrigerant coil 13 and water coil 14, and 14 one end of water coil passes through switch valve b7-2, small Water tank 5, water pump a8-1 are connect with 14 other end of water coil;One end of small water tank 5 passes through switch valve a7-1, large water tank 6, water pump B8-2 is connect with the other end of small water tank 5;One end of refrigerant coil 13 by electric heater 16, after gas-liquid separator 11 with system One end of cryogen coil pipe 13 connects;
Outdoor coil pipe used 3 connect with solenoid valve a9-1 and connect with electric expansion valve 10, outdoor coil pipe used 3 through solenoid valve b9-2 and Four-way reversing valve 15 is connect with phase-transition heat-storage packet 12, and solenoid valve a9-1 is arranged in parallel with solenoid valve b9-2;
The first line structure on throttling set 4 is connect by solenoid valve c9-3 with phase-transition heat-storage packet 12.Phase-transition heat-storage packet 12 The outermost of compressor 1 is set.
Detailed description of the invention
The heat pump heating schematic diagram of Fig. 1 compressor housing accumulation of heat air-breathing reheating.
The defrosting schematic diagram of Fig. 2 compressor hot-gas bypass joint accumulation of heat.
Fig. 3 refrigeration schematic diagram.
In figure: the small water tank 6- large water tank 7-1 of the 1- outdoor coil pipe used 4- throttling set 5- of compressor 2- indoor coil 3- Switch valve a 7-2 switch valve b 8-1 water pump a 8-2 water pump b 9-1 solenoid valve a 9-2 solenoid valve b 9-3 solenoid valve c 10- electronics Expansion valve 11- gas-liquid separator 12- phase-transition heat-storage packet 13- refrigerant coil 14- water coil 15- four-way reversing valve 16- Electric heater, T are temperature sensor, and P is pressure sensor.
Specific embodiment
There are three types of the working methods of this system, is the heat pump heating of compressor housing accumulation of heat air-breathing reheating respectively;Compressor The defrosting of hot-gas bypass joint accumulation of heat;Cooling in summer.Specific working mode is as follows:
As shown in Figure 1, solenoid valve a9-1, solenoid valve c9-3 are closed when heat pump carries out heating heating, solenoid valve b9-2 is beaten It opens.The refrigerant vapour come out by compressor 1 enters the room coil pipe 2 through four-way reversing valve 15 and carries out indoor heating, condensed Refrigerant enters outdoor coil pipe used 3 through throttling set 4 and electric expansion valve 10 and is evaporated, and the refrigerant after evaporation is through solenoid valve B9-2 and four-way reversing valve 15 enter phase-transition heat-storage packet 12 and absorb compression case body heat progress air-breathing reheating, by gas-liquid separator 11, which enter compressor, completes heating heating mode circulation.
In this course, phase-transition heat-storage packet 12 absorbs the shell waste heat generated when compressor 1 works, so that in accumulation of heat packet Material is undergone phase transition compressor housing thermmal storage.The refrigerant vapour come out by outdoor coil pipe used 3 through solenoid valve b9-2 and Four-way reversing valve 15 enters phase-transition heat-storage packet 12, and refrigerant vapour absorbs the heat in accumulation of heat packet at this time, so that refrigerant itself Reheating.This can effectively solve low temperature environment run when because of evaporating temperature it is too low caused by the too low system system of compressor air suction temperature The problem of thermal energy power reduces.
When heat reduction is not enough to provide 1 air-breathing reheating institute's calorific requirement of compressor in phase-transition heat-storage packet 12, setting electricity adds Hot device 16, to supply the inadequate problem of heat.
Under heat pump heating mode, because outdoor coil pipe used 3 surface temperature is lower, the vapor in air can be solidifying in evaporator surface Form frost, when system long-play, frost layer becomes increasingly thicker, and the frost layer of thickening increases the surface resistance of heat transfer of evaporator, The channel between cooling fin is blocked, the evaporating temperature of system is reduced.Therefore, when frost layer reaches certain thickness, just must It need defrost to heat pump.
As shown in Fig. 2, solenoid valve b9-2 first is closed, solenoid valve a9-1 when heat pump needs to defrost, solenoid valve c9-3 electricity Magnet valve is opened.Refrigerant is discharged from compressor 1 and by four-way reversing valve 15, and at this moment refrigerant is divided into two-way, freezes all the way Agent stream is sent to indoor coil 2, is condensed by room air, and device throttling 4 is then throttled;Another way refrigerant passes through solenoid valve It is transferred to outdoor coil pipe used 3 after a9-1, for melting the frost of accumulation, is then throttled by electric expansion valve 10.Two kinds of refrigerant streams Mixing is by solenoid valve c9-3, and then refrigerant flows into phase-transition heat-storage packet 12 and the evaporation and heat-exchange in phase-change material.Finally, refrigeration Agent, which passes through gas-liquid separator 11 and returns to compressor 1, completes defrosting circulation.
In this course, phase-transition heat-storage packet 12 absorbs the shell waste heat generated when compressor 1 works, so that in accumulation of heat packet Material is undergone phase transition compressor housing thermmal storage.Two-way is divided by the high temperature refrigerant that compressor 1 comes out in the process, Wherein refrigerant stream is sent to indoor indoor coil 2 all the way, indoor heating can be still given during defrosting, this can be improved Indoor comfort will not influence the fluctuation of room temperature because of defrosting.Another way is sent to outdoor outdoor coil pipe used 3, the system of high temperature Refrigerant vapour can remove evaporator surface frost layer, to solve the problems, such as the system heating capacity generated by frosting decline.
When the heat reduction stored in phase-transition heat-storage packet 12, it is insufficient to allow and is steamed completely through the refrigerant of solenoid valve c9-3 two-way When hair, electric heater 16 is set, to supply the inadequate problem of heat.
As shown in figure 3, four-way reversing valve 15 is converted when summer, system variation is refrigeration mode, at this moment solenoid valve a9-1, electricity Magnet valve c9-3 is closed, and solenoid valve b9-2 electricity is opened.The refrigerant vapour come out by compressor 1 is through four-way reversing valve 15, solenoid valve B9-2 enters outdoor coil pipe used 3 and is condensed, and condensed refrigerant enters the room coil pipe through electric expansion valve 10 and throttling set 4 2 are evaporated the refrigerant to indoor refrigeration, after evaporation after four-way reversing valve 15 enters phase-transition heat-storage packet 12 through gas-liquid separation Device 11 enters compressor and completes refrigeration mode circulation.
In this course since the work of compressor 1 can generate heat and be come out by shell, be arranged small water tank 5 with Water coil 14 in accumulation of heat packet carries out the heat that circulation takes away compressor housing by the water in water tank, avoids overheat of compressor And the efficiency generated reduces.And when temperature increases in small water tank 5, heat and mass is carried out by coupled large water tank 6 and is followed Ring, so that water temperature is reduced, it is continual to take away compressor heat.Water in its medium and small water tank 5 can make household water, mend Hot water needed for filling life realizes power savings advantages.

Claims (1)

1. utilizing the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting, it is characterised in that: the heat pump Device includes that compressor (1), indoor coil (2), outdoor coil pipe used (3), throttling set (4), gas-liquid separator (11) and four-way change To valve (15), small water tank (5), large water tank (6), phase-transition heat-storage packet (12), refrigerant coil (13), water coil (14) and electric heating Device (16);
Compressor (1), indoor coil (2), outdoor coil pipe used (3), throttling set (4), gas-liquid separator (11) and four-way reversing valve (15) it is connected by refrigerant tubing between;Compressor (1) is filled by four-way reversing valve (15) and indoor coil (2) and throttling Set (4) connection;Throttling set (4) is equipped with two line structures, and the first line structure is connect with compressor (1), and the second line structure passes through Outdoor coil pipe used (3) and four-way reversing valve (15) are connect with compressor (1);It is formed between compressor (1) and gas-liquid separator (11) The circulatory system all the way;
The outside of compressor (1) is equipped with refrigerant coil (13) and water coil (14), and water coil (14) one end passes through switch valve b (7-2), small water tank (5), water pump a (8-1) are connect with water coil (14) other end;One end of small water tank (5) passes through switch valve a (7-1), large water tank (6), water pump b (8-2) are connect with the other end of small water tank (5);One end of refrigerant coil (13) passes through electricity Heater (16), gas-liquid separator (11) are connect with one end of refrigerant coil (13) afterwards;
Outdoor coil pipe used (3) connect with solenoid valve a (9-1) and connect with electric expansion valve (10), and outdoor coil pipe used (3) are through solenoid valve b (9-2) and four-way reversing valve (15) are connect with phase-transition heat-storage packet (12), and solenoid valve a (9-1) and solenoid valve b (9-2) is arranged in parallel;
The first line structure on throttling set (4) is connect by solenoid valve c (9-3) with phase-transition heat-storage packet (12);
The outermost in compressor (1) is arranged in phase-transition heat-storage packet (12).
CN201821350057.4U 2018-08-21 2018-08-21 Utilize the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting Active CN208704227U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110671780A (en) * 2019-10-24 2020-01-10 宁波奥克斯电气股份有限公司 Air conditioner control method and device and air conditioner
CN111121229A (en) * 2019-12-18 2020-05-08 宁波奥克斯电气股份有限公司 Control method and control device of air conditioner, heat dissipation structure and air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110671780A (en) * 2019-10-24 2020-01-10 宁波奥克斯电气股份有限公司 Air conditioner control method and device and air conditioner
CN111121229A (en) * 2019-12-18 2020-05-08 宁波奥克斯电气股份有限公司 Control method and control device of air conditioner, heat dissipation structure and air conditioner

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