CN202692529U - Heat-pump air-conditioning system - Google Patents

Heat-pump air-conditioning system Download PDF

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Publication number
CN202692529U
CN202692529U CN 201220371683 CN201220371683U CN202692529U CN 202692529 U CN202692529 U CN 202692529U CN 201220371683 CN201220371683 CN 201220371683 CN 201220371683 U CN201220371683 U CN 201220371683U CN 202692529 U CN202692529 U CN 202692529U
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China
Prior art keywords
heat exchanger
compressor
pipeline
valve
type air
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Active
Application number
CN 201220371683
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Chinese (zh)
Inventor
段亮
孟琪林
梁志滔
熊军
陈绍林
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN 201220371683 priority Critical patent/CN202692529U/en
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Abstract

The utility model discloses a heat-pump air-conditioning system, which comprises an indoor heat exchanger, an outdoor heat exchanger, a first pipeline, an expansion valve, a compressor, a four-way valve, a heat accumulation loop, a heat accumulator and a hot air bypass loop, wherein the indoor heat exchanger and the outdoor heat exchanger are connected through the first pipeline; the expansion valve is connected to the first pipeline in series; the compressor is used for compressing refrigerant steam; the four-way valve is connected with the input end and the output end of the compressor, the indoor heat exchanger and the outer heat exchanger; one end of the heat accumulation loop is connected between the expansion valve on the first pipeline and the outdoor heat exchanger, a first two-way valve and a heat accumulator wrapped on the outer wall of the compressor are connected to the heat accumulation loop in series, and the other end of the heat accumulation loop is connected with the input end of the compressor; one end of the hot air bypass loop is connected between the output end of the compressor and the indoor heat exchanger, the other end of the hot air bypass loop is connected with the outdoor heat exchanger; and a second two-way valve and a throttling device are connected to the hot air bypass loop in series. A refrigerant flows into the expansion valve for cooling from the indoor heat exchanger, so that the temperature of the refrigerant flowing into the heat accumulator is reduced, the temperature difference between the refrigerant flowing into the heat accumulator and the heat accumulator is improved and the defrosting effect is effectively improved.

Description

Heat pump type air corditioning system
Technical field
The utility model relates to air conditioner technical field, particularly a kind of heat pump type air corditioning system.
Background technology
Heat in the process at heat pump type air corditioning system, when ambient temperature is low, easily frosting on the outdoor heat exchanger, so that the heat transfer effect of outdoor heat exchanger reduces, thereby affect the carrying out that heat pump type air corditioning system heats process, when frosting acquires a certain degree, so that the indoor heating effect reduces, even indoor heat exchanger can't be heated, namely can't blow out the wind that heats that is higher than indoor temperature.At this time just need to remove the frosting on the outdoor heat exchanger, to recover its heat transfer effect, guarantee the heating effect of indoor heat exchanger.
Along with rising steadily of energy prices, the application of energy-efficient heat pump type air corditioning system is more and more wider, its Defrost technology mostly is between expansion valve and indoor set and is connected the accumulation of heat loop, and a part of refrigerant directly imported the accumulation of heat loop by indoor heat exchanger, and flow in the storage heater that is coated on the compressor outer wall construction, in storage heater, absorb the heat that compressor operating produces by refrigerant, and be delivered in the outdoor heat exchanger after the compression of the refrigerant after will absorbing heat by compressor, to improve the temperature in the outdoor heat exchanger, finally reach the effect to the outdoor heat exchanger defrosting.
Because the storage heater temperature in the heat pump type air corditioning system is generally not high, in defrost process, refrigerant is after flowing through indoor heat exchanger, directly enter storage heater, so that the temperature difference of the refrigerant of inflow storage heater and storage heater is less, be unfavorable for that refrigerant absorbs heat after flowing into storage heater, when serious even the storage heater temperature can occur be lower than or equal refrigerant temperature, so that refrigerant can't absorb heat in storage heater, on the contrary can heat release, can't satisfy the defrost operation that carries out in heat pump type air corditioning system, so that defrosting effect is lower.
Therefore, how improving the refrigerant of inflow storage heater and the temperature difference of storage heater, to improve defrosting effect, is those skilled in the art's problem demanding prompt solutions.
The utility model content
In view of this, the utility model provides a kind of heat pump type air corditioning system, flows into the refrigerant of storage heater and the temperature difference of storage heater with raising, and then improves defrosting effect.
For achieving the above object, the utility model provides following technical scheme:
A kind of heat pump type air corditioning system comprises:
Indoor heat exchanger;
Outdoor heat exchanger;
The first pipeline that connects described indoor heat exchanger and described outdoor heat exchanger;
Be connected in series with the expansion valve on described the first pipeline;
The compressor that is used for compression refrigerant steam;
Be connected the cross valve that described indoor heat exchanger and described outdoor heat exchanger be connected with output with the input of described compressor;
One end is connected in described expansion valve on described the first pipeline and the accumulation of heat loop between the described outdoor heat exchanger, be connected with the first two-port valve and the storage heater that is wrapped in described compressor outer wall on the described accumulation of heat loop, the other end in described accumulation of heat loop is connected with the input of described compressor;
One end is connected between the output and described outdoor heat exchanger of described compressor, and the other end connects the hot gas bypass circuit of described outdoor heat exchanger, is connected with the second two-port valve and throttling arrangement on the described hot gas bypass circuit.
Preferably, an end of described hot gas bypass circuit is connected between the output and described cross valve of described compressor.
Preferably, an end of described hot gas bypass circuit is connected between described indoor heat exchanger and the described cross valve.
Preferably, be provided with on the described hot gas bypass circuit by first check valve of described compressor to the conducting of described outdoor heat exchanger direction.
Preferably, also comprise and be connected in series with on described the first pipeline and be arranged at flash vessel between described expansion valve and the described outdoor heat exchanger, be connected with the tonifying Qi pipeline to described compressor tonifying Qi between described flash vessel and the described compressor, be connected with the 3rd two-port valve on the described tonifying Qi pipeline.
Preferably, also comprise being connected in series with on described the first pipeline and being arranged between described flash vessel and the described outdoor heat exchanger, be used for the throttle capillary tube of reducing pressure by regulating flow.
Preferably, be provided with the second check valve of conducting when flowing to described compressor by described flash vessel on the described tonifying Qi pipeline.
Preferably, described compressor is compound compressor.
Can find out from above-mentioned technical scheme, in the heat pump type air corditioning system that the utility model provides, accumulation of heat loop one end is connected between expansion valve and the outdoor heat exchanger, and the other end is connected with the input of compressor, and is provided with the storage heater that is wrapped in the compressor outer wall on the accumulation of heat loop.In defrost process, refrigerant flows into expansion valve by indoor heat exchanger, effect by expansion valve step-down cooling, thereby reduce so that flow into the refrigerant temperature of storage heater, by opening the first two-port valve, make a part of refrigerant through the expansion valve decrease temperature and pressure enter storage heater, and then improved the refrigerant of inflow storage heater and the temperature difference of storage heater, improved the heat that absorbs, Effective Raise defrosting effect.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the first specific embodiment of the heat pump type air corditioning system that Fig. 1 provides for the utility model embodiment;
The structural representation of the second specific embodiment of the heat pump type air corditioning system that Fig. 2 provides for the utility model embodiment;
The structural representation of the third specific embodiment of the heat pump type air corditioning system that Fig. 3 provides for the utility model embodiment.
The specific embodiment
The utility model discloses a kind of heat pump type air corditioning system, flow into the refrigerant of storage heater and the temperature difference of storage heater with raising, and then improve defrosting effect.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 2 and Fig. 3, the structural representation of the first specific embodiment of the heat pump type air corditioning system that Fig. 1 provides for the utility model embodiment; The structural representation of the second specific embodiment of the heat pump type air corditioning system that Fig. 2 provides for the utility model embodiment; The structural representation of the third specific embodiment of the heat pump type air corditioning system that Fig. 3 provides for the utility model embodiment.
The utility model embodiment provides a kind of heat pump type air corditioning system, comprising: indoor heat exchanger 1; Outdoor heat exchanger 2; The first pipeline that connects indoor heat exchanger 1 and outdoor heat exchanger 2; Be connected in series with the expansion valve 3 on the first pipeline; The compressor 4 that is used for compression refrigerant steam; Be connected the cross valve 5 that indoor heat exchanger 1 and outdoor heat exchanger 2 be connected with output with the input of compressor 4; One end is connected in expansion valve 3 on the first pipeline and the accumulation of heat loop between the outdoor heat exchanger 2, is connected with the first two-port valve 8 on the accumulation of heat loop and is wrapped in the storage heater 6 of compressor 4 outer walls, and the other end in accumulation of heat loop is connected with the input of compressor 4; One end is connected between the output and indoor heat exchanger 1 of compressor 4, and the hot gas bypass circuit of other end junction chamber external heat exchanger 2 is connected with the second two-port valve 9 and throttling arrangement on the hot gas bypass circuit.
In the heat pump type air corditioning system that the utility model embodiment provides, accumulation of heat loop one end is connected between expansion valve 3 and the outdoor heat exchanger 2, and the other end is connected with the input of compressor 4, and is provided with the storage heater 6 that is wrapped in compressor 4 outer walls on the accumulation of heat loop.In defrost process, refrigerant flows into expansion valve 3 by indoor heat exchanger 1, effect by expansion valve 3 step-downs cooling, thereby reduce so that flow into the refrigerant temperature of storage heater 6, by opening the first two-port valve 8, make a part of refrigerant through expansion valve 3 decrease temperature and pressure enter storage heater 6, and then the refrigerant that flows into storage heater 6 and the temperature difference of storage heater 6 have been improved, improved the heat that absorbs, the refrigerant that absorbs heat is transported in the outdoor heat exchanger 2 through hot gas bypass circuit, it is carried out defrost operation, Effective Raise defrosting effect.
Need to prove, absorb that compressed machine 4 compressions of refrigerant of heat are laggard to enter outdoor heat exchanger 2, there is pressure reduction between compressor 4 and the outdoor heat exchanger 2, in order to regulate pressure reduction, be connected with the second two-port valve 9 and throttling arrangement in hot gas bypass circuit, and throttling arrangement can be capillary or electric expansion valve, and under the second two-port valve 9 openings, the reduced pressure operation by throttling arrangement makes the refrigerant that absorbs heat enter outdoor heat exchanger 2.
One end of hot gas bypass circuit is connected between the output and indoor heat exchanger 1 of compressor 4, and is connected with cross valve 5 between the output of compressor 4 and the indoor heat exchanger 1.
As shown in Figure 2, preferably the end with hot gas bypass circuit is connected between the output and cross valve 5 of compressor 4, makes when avoiding refrigerant to flow through cross valve 5 to carry through storage heater 6 to absorb thermal loss, reduces defrosting effect.
As shown in Figure 3, an end of hot gas bypass circuit is connected between cross valve 5 and the indoor heat exchanger 1, all can realizes defrost operation, and all within protection domain.
Preferably, the throttling arrangement of contacting on the hot gas bypass circuit is bypass capillary 10, by the effect of bypass capillary 10, so that hot gas bypass circuit is carried out the adjusting of reducing pressure by regulating flow.
The second two-port valve 9 all is connected in series with on the hot gas bypass circuit with bypass capillary 10, and the two the position that is oppositely arranged is not limited.
In order to guarantee that further the refrigerant that flows in the hot gas bypass circuit does not reflux, and is provided with on the hot gas bypass circuit by first check valve of compressor 4 to outdoor heat exchanger 2 direction conductings.
As shown in Figure 2, along with rising steadily of energy prices, the application of energy-efficient heat pump type air corditioning system system is more and more wider, in order to increase refrigerant circulation, the heat pump type air corditioning system that the utility model embodiment provides also comprises and is connected in series with on described the first pipeline and is arranged at flash vessel 7 between expansion valve 3 and the outdoor heat exchanger 2, be connected with between flash vessel 7 and the compressor 4 to the tonifying Qi pipeline of compressor 4 tonifying Qi, be connected with the 3rd two-port valve 12 on the described tonifying Qi pipeline.
As shown in Figure 2, refrigerant is wherein a part of step-down gasification after flowing into flash vessel 7, forms the steam of refrigerant, and the tonifying Qi pipeline is connected with flash vessel 7, by opening the 3rd two-port valve 12, namely by the steam of flash vessel 7 to compressor 2 coolant addings, to remedy owing to the inspiratory capacity of compressor 4 is not enough.Because the tonifying Qi effect of flash vessel 7 improves the flow of refrigerant of the output of compressor 4 so that the compression horsepower of compressor 4 significantly rises, and then improved refrigerant flows into outdoor heat exchanger 2 within the unit interval heat, the carrying out that is conducive to accelerate defrost operation,
Preferably, also comprise be connected in series with on the first pipeline and be arranged at flash vessel 7 and outdoor heat exchanger 2 between, be used for the throttle capillary tube 11 of reducing pressure by regulating flow.By throttle capillary tube 11 effects, the refrigerant that is flowed to outdoor heat exchanger 2 by flash vessel 7 is carried out reducing pressure by regulating flow.
In order to guarantee further in the tonifying Qi pipeline that the refrigerant that flows does not reflux, be provided with the second check valve of conducting when flowing to compressor 4 by flash vessel 7 on the tonifying Qi pipeline.Preferred flash vessel 7 by increasing by the second check valve, has effectively avoided heating to stop the backflow of rear refrigerant for the electrical heating flash vessel.
In order further to improve defrosting effect, increase the refrigerant amount of flow, compressor 4 is preferably compound compressor.By the compression of compound compressor to refrigerant, improved the compression degree of refrigerant, and then improved the coolant quantity that flows out compressor 4 in the unit interval, and then reached to improve and publish books by the purpose of effect.Also can select the unit compressor as compressor 4, concrete type of compressor does not limit and all in protection domain.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (8)

1. a heat pump type air corditioning system is characterized in that, comprising:
Indoor heat exchanger (1);
Outdoor heat exchanger (2);
The first pipeline that connects described indoor heat exchanger (1) and described outdoor heat exchanger (2);
Be connected in series with the expansion valve (3) on described the first pipeline;
The compressor (4) that is used for compression refrigerant steam;
Be connected the cross valve (5) that described indoor heat exchanger (1) and described outdoor heat exchanger (2) be connected with output with the input of described compressor (4);
One end is connected in described expansion valve (3) on described the first pipeline and the accumulation of heat loop between the described outdoor heat exchanger (2), be connected with the first two-port valve (8) on the described accumulation of heat loop and be wrapped in the storage heater (6) of described compressor (4) outer wall, the other end in described accumulation of heat loop is connected with the input of described compressor (4);
One end is connected between the output and described indoor heat exchanger (1) of described compressor (4), and the other end connects the hot gas bypass circuit of described outdoor heat exchanger (2), is connected with the second two-port valve (9) and throttling arrangement on the described hot gas bypass circuit.
2. heat pump type air corditioning system as claimed in claim 1 is characterized in that, an end of described hot gas bypass circuit is connected between the output and described cross valve (5) of described compressor (4).
3. heat pump type air corditioning system as claimed in claim 1 is characterized in that, an end of described hot gas bypass circuit is connected between described indoor heat exchanger (1) and the described cross valve (5).
4. heat pump type air corditioning system as claimed in claim 1 is characterized in that, is connected with on the described hot gas bypass circuit by first check valve of described compressor (4) to described outdoor heat exchanger (2) direction conducting.
5. heat pump type air corditioning system as claimed in claim 1, it is characterized in that, also comprise be connected in series with on described the first pipeline and be arranged at described expansion valve (3) and described outdoor heat exchanger (2) between flash vessel (7), be connected with to the tonifying Qi pipeline of described compressor (4) tonifying Qi between described flash vessel (7) and the described compressor (4), be connected with the 3rd two-port valve (12) on the described tonifying Qi pipeline.
6. heat pump type air corditioning system as claimed in claim 5 is characterized in that, also comprise be connected in series with on described the first pipeline and be arranged at described flash vessel (7) and described outdoor heat exchanger (2) between, be used for the throttle capillary tube (11) of reducing pressure by regulating flow.
7. heat pump type air corditioning system as claimed in claim 5 is characterized in that, is provided with on the described tonifying Qi pipeline by second check valve of described flash vessel (7) to described compressor (4) direction conducting.
8. such as each described heat pump type air corditioning system of claim 1 ~ 7, it is characterized in that, described compressor (4) is compound compressor.
CN 201220371683 2012-07-30 2012-07-30 Heat-pump air-conditioning system Active CN202692529U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225936A (en) * 2013-04-24 2013-07-31 青岛海尔空调电子有限公司 Air conditioning system with defrosting device and defrosting method thereof
CN103574798A (en) * 2012-07-30 2014-02-12 珠海格力电器股份有限公司 Heat-pump-type air conditioning system, sensible-heat defrosting method, heat-storage defrosting method
CN104251580A (en) * 2013-06-26 2014-12-31 珠海格力电器股份有限公司 Air conditioning system
WO2015032293A1 (en) * 2013-09-05 2015-03-12 珠海格力电器股份有限公司 Refrigeration- and heat accumulation method and refrigeration- and heating anti-frost method and air conditioning system
CN104567073A (en) * 2013-10-28 2015-04-29 珠海格力电器股份有限公司 Air conditioning cycle system
CN104567075A (en) * 2013-10-28 2015-04-29 珠海格力电器股份有限公司 Air conditioning cycle device and control method thereof
CN104633836A (en) * 2013-11-14 2015-05-20 珠海格力电器股份有限公司 Defrosting control method for air conditioner
CN105042943A (en) * 2015-09-01 2015-11-11 中国科学院广州能源研究所 Medium-low-temperature hot source heat pump steam system
CN105571221A (en) * 2015-12-21 2016-05-11 珠海格力电器股份有限公司 Air conditioner system and control method of air conditioner system
CN106225290A (en) * 2016-07-15 2016-12-14 珠海格力电器股份有限公司 Air-conditioning and control method thereof
CN107101300A (en) * 2017-05-17 2017-08-29 广东美的制冷设备有限公司 Reminding method and computer-readable recording medium that air conditioner and its heat storage tank are changed
CN108088116A (en) * 2017-12-04 2018-05-29 珠海格力电器股份有限公司 A kind of heat pump system and its control method for increasing air compensation using recuperation of heat

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103574798A (en) * 2012-07-30 2014-02-12 珠海格力电器股份有限公司 Heat-pump-type air conditioning system, sensible-heat defrosting method, heat-storage defrosting method
CN103574798B (en) * 2012-07-30 2016-04-20 珠海格力电器股份有限公司 Heat pump type air corditioning system and sensible heat defrost method and thermal storage defrosting method
CN103225936B (en) * 2013-04-24 2015-11-25 青岛海尔空调电子有限公司 A kind of air-conditioning system and Defrost method thereof with defroster
CN103225936A (en) * 2013-04-24 2013-07-31 青岛海尔空调电子有限公司 Air conditioning system with defrosting device and defrosting method thereof
CN104251580A (en) * 2013-06-26 2014-12-31 珠海格力电器股份有限公司 Air conditioning system
CN104422193A (en) * 2013-09-05 2015-03-18 珠海格力电器股份有限公司 Refrigeration and heating liquid accumulation methods, refrigeration and heating frost prevention methods and air conditioning system
CN104422193B (en) * 2013-09-05 2016-08-31 珠海格力电器股份有限公司 Freeze, heat storage liquid method and refrigeration, heat frost prevention method and air-conditioning system
WO2015032293A1 (en) * 2013-09-05 2015-03-12 珠海格力电器股份有限公司 Refrigeration- and heat accumulation method and refrigeration- and heating anti-frost method and air conditioning system
CN104567073A (en) * 2013-10-28 2015-04-29 珠海格力电器股份有限公司 Air conditioning cycle system
CN104567075A (en) * 2013-10-28 2015-04-29 珠海格力电器股份有限公司 Air conditioning cycle device and control method thereof
CN104633836A (en) * 2013-11-14 2015-05-20 珠海格力电器股份有限公司 Defrosting control method for air conditioner
CN104633836B (en) * 2013-11-14 2017-05-31 珠海格力电器股份有限公司 Air-conditioner defrosting control method
CN105042943A (en) * 2015-09-01 2015-11-11 中国科学院广州能源研究所 Medium-low-temperature hot source heat pump steam system
CN105571221A (en) * 2015-12-21 2016-05-11 珠海格力电器股份有限公司 Air conditioner system and control method of air conditioner system
CN106225290A (en) * 2016-07-15 2016-12-14 珠海格力电器股份有限公司 Air-conditioning and control method thereof
CN107101300A (en) * 2017-05-17 2017-08-29 广东美的制冷设备有限公司 Reminding method and computer-readable recording medium that air conditioner and its heat storage tank are changed
CN107101300B (en) * 2017-05-17 2019-12-06 广东美的制冷设备有限公司 air conditioner, prompting method for replacing heat storage box of air conditioner and computer readable storage medium
CN108088116A (en) * 2017-12-04 2018-05-29 珠海格力电器股份有限公司 A kind of heat pump system and its control method for increasing air compensation using recuperation of heat

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