CN102384602A - Low-temperature heating air conditioner - Google Patents
Low-temperature heating air conditioner Download PDFInfo
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- CN102384602A CN102384602A CN201010267547XA CN201010267547A CN102384602A CN 102384602 A CN102384602 A CN 102384602A CN 201010267547X A CN201010267547X A CN 201010267547XA CN 201010267547 A CN201010267547 A CN 201010267547A CN 102384602 A CN102384602 A CN 102384602A
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- compressor
- heat exchanger
- low
- temperature heating
- conditioning
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 44
- 239000003507 refrigerant Substances 0.000 claims abstract description 44
- 238000004378 air conditioning Methods 0.000 claims abstract description 35
- 238000005057 refrigeration Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
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Abstract
The invention discloses a low-temperature heating air conditioner, which connects a compressor with the upper end of a liquid distributor of the compressor through a communicating pipe to form a refrigerant self-circulation loop; a pressure sensing capillary tube is connected between the four-way valve and the indoor heat exchanger, a flow control valve is arranged on the refrigerant self-circulation loop, and whether the refrigerant self-circulation loop is communicated or not is controlled by controlling the opening degree of the flow, so that the displacement of the compressor is controlled. The opening and closing of the refrigerant self-circulation loop are controlled through the matching of the pressure sensing capillary tube and the flow control valve, the traditional constant-speed and constant-displacement compressor is changed into a compressor with the displacement capable of being changed according to the mode of the air conditioning system, and the automatic switching of the displacement of the compressor is realized.
Description
Technical field
The present invention relates to field of air conditioning, refer in particular to a kind of low-temperature heating air-conditioning.
Background technology
Along with the continuous progress of society and the continuous development of science and technology, People more and more is concerned about the earth that we depend on for existence now, and most countries also has been fully recognized that the importance of environment to our human development in the world.Each state is all taking active and effective measure to improve environment, reduces and pollutes.This is wherein important also to be that the most urgent problem is exactly an energy problem, fundamentally solve energy problem, except seeking the new energy, energy-conservation be crucial also be the most effectively important measures at present.In order to cooperate the demand in market, high efficiency energy saving air conditioner becomes the main developing direction in air-conditioning market, and existing air-conditioning system adopts the constant discharge compressor assembly, and promptly under refrigeration, the heating mode, the compressor air-discharging amount is constant basically; On the other hand, the high energy efficiency air-conditioning on the market is for realizing the high energy efficiency ratio, compare the compressor air-discharging amount that low efficiency air-conditioning uses and reduce, thereby, cause that heating capacity generally descends under the state of heating, make air-conditioning under heating mode, comfortableness reduces.
Therefore, the present invention provides a kind of low-temperature heating air-conditioning, and it reaches the purpose that improves heating capacity when guaranteeing the air-conditioning high energy efficiency, improve the effect and the comfortableness of air-conditioner low-temperature heating simultaneously.
Summary of the invention
The present invention provides a kind of low-temperature heating air-conditioning, and efficiency and compressor displacement are constant during its refrigeration, and have improved compressor displacement when heating, to improve heating capacity and comfortableness.
The present invention is achieved in that
A kind of low-temperature heating air-conditioning, it includes: compressor, cross valve, indoor heat exchanger and outdoor heat exchanger, this cross valve is connected with this indoor heat exchanger, this outdoor heat exchanger and this compressor; This compressor is through being connected with the upper end of the knockout of this compressor communicating pipe; Form a refrigerant self circular loop; And on the refrigerant self circular loop, be provided with flow control valve, and be used to control the conducting degree of refrigerant self circular loop, thus the size of control compressor displacement.
Preferably, described flow control valve is located on the compressor.
Preferably; This low-temperature heating air-conditioning also comprises a pressure sensing capillary, and the one of which end is connected between this cross valve and this indoor heat exchanger, and the other end is connected in this flow control valve place; It is used to detect the pressure of this indoor heat exchanger outlet side cold-producing medium; And cooperating the open degree of controlling this flow control valve with this flow control valve, the pressure sensing capillary is controlled the open degree of flow control valve according to the pressure of detected indoor heat exchanger side, controls the duty of refrigerant self circular loop.
Preferably, under refrigeration mode, this pressure sensing capillary detection to pressure limit when being 0.4～0.6MPa; The open degree of this flow control valve is a complete opening; This communicating pipe communicates with this knockout, and refrigerant self circular loop and refrigerant circulation circuit are worked simultaneously, realizes that little discharge capacity heats.
Preferably, under heating mode, this pressure sensing capillary detection to pressure limit when being 1.6～2.0MPa; The open degree of this flow control valve is zero, and this communicating pipe does not communicate with this knockout, and the refrigerant self circular loop is closed; Refrigerant circulation circuit work realizes that big discharge capacity heats.
Preferably, the flow process of this refrigerant self circular loop is: compressor → communicating pipe → compressor.
Preferably, under refrigeration mode, the flow process of this refrigerant circulation circuit is: compressor → cross valve → outdoor heat exchanger → indoor heat exchanger → cross valve → compressor.
Preferably, under heating mode, the flow process of this refrigerant circulation circuit is: compressor → cross valve → indoor heat exchanger → outdoor heat exchanger → cross valve → compressor.
Technique effect of the present invention:
A kind of low-temperature heating air-conditioning of the present invention; Through cooperating of pressure sensing capillary and flow control valve; The open and close of control refrigerant self circular loop; Compressor converted the becoming of traditional constant speed constant discharge can be changed compressor displacement according to air-conditioning system pattern of living in, and realize the automatic switchover of compressor displacement.Under refrigeration mode, refrigerant self circular loop and refrigerant circulation circuit are opened simultaneously, and the efficiency of air-conditioning system is identical with the common air-conditioning system, the air-conditioning system operate as normal; Under heating mode, close the refrigerant self circular loop, only open refrigerant circulation circuit, compressor displacement increases.
Description of drawings
Fig. 1 is the system's control chart under the low-temperature heating air conditioner refrigerating pattern of the present invention;
Fig. 2 is the system's control chart under the low-temperature heating air-conditioning heating mode of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated:
As shown in Figure 1.A kind of low-temperature heating air-conditioning; It includes: compressor 1, cross valve 2, indoor heat exchanger 3, and knockout 4; Outdoor heat exchange 5, this cross valve 2 are connected, reach outdoor heat exchanger 5 and connect with blast pipe, the knockout 4 of this compressor 1, the indoor heat exchanger 3 of this compressor 1; This compressor 1 forms a refrigerant self circular loop through being connected with the upper end of this knockout 4 communicating pipe 11; Preferably, on this compressor 1, be provided with flow control valve 12, this flow control valve 12 is located at the end of communicating pipe 11, through the flow control valve conducting degree of 12 these communicating pipes 11 of control.
In order to control this flow valve accurately, be connected with pressure sensing capillary 6 between this cross valve 2 and this indoor heat exchanger 3, the one of which end is connected between this cross valve 2 and this indoor heat exchanger 3; The other end is connected in this flow control valve 12 places; It is used to detect the pressure of these indoor heat exchanger 3 sides, through detecting the pressure differential of indoor heat exchanger 3 sides and compressor 1 side, and detected pressure differential is fed back to this flow control valve 12; To be used to control the open degree of this flow control valve 12; Whether be communicated with thereby reach control refrigerant self circular loop, change the discharge capacity of compressor 1, realize the purpose of automatic switchover compressor 1 discharge capacity.Preferably, can reach the open degree of control flow control valve 12 through controlling spring and the slide block that flow-control is sent out.Under heating mode, close the refrigerant self circular loop, the refrigerant circulation circuit work under the refrigeration mode, the discharge capacity of increase compressor; And under refrigeration mode, open the refrigerant self circular loop, work simultaneously with refrigerant circulation circuit under the heating mode, and then realize the little discharge capacity of compressor.
This low-temperature heating air-conditioning also includes structures such as stop valve, filter, throttle capillary tube and tracheae, liquid pipe, and the refrigeration system of its operation principle and prior art, the operation principle of heating are identical, have belonged to prior art, and the present invention repeats no more at this.
Continuation is referring to shown in Figure 1, and the circulating path of cold media gas is shown in arrow among the figure.When the pressure that detects indoor heat exchanger 3 sides when this pressure sensing capillary 6 was low pressure, when promptly the pressure limit of indoor heat exchanger side was 0.4～0.6MPa, air-conditioning system judged that current air-conditioning pattern of living in is a refrigeration mode; The open degree of this flow control valve 12 is for open fully; At this moment, this communicating pipe 11 communicates with this knockout 4, the work of refrigerant self circular loop; Air-conditioning system is moved refrigerant circulation circuit and refrigerant self circular loop simultaneously, realizes float amount refrigeration.Wherein, the flow process of refrigerant self circular loop is: compressor → communicating pipe → compressor; And the refrigerant circulation circuit under the refrigeration mode is: compressor → cross valve → outdoor heat exchanger → indoor heat exchanger → cross valve → compressor.
Referring to shown in Figure 2, the circulating path of cold media gas is shown in arrow among the figure.When press judging that current power sensing capillary 6 detects the pressure position high pressure of indoor heat exchanger 3 sides; Be the pressure limit of indoor heat exchanger side when being 1.6～2.0MPa, air-conditioning system judges that current pattern of living in is a heating mode, and the open degree of this flow control valve 12 is zero (being in closed condition); At this moment; This communicating pipe 11 does not communicate with this knockout 4, and the refrigerant self circular loop is closed, the refrigerant circulation circuit under the air-conditioning system operation heating mode; Be equivalent to compressor displacement and increase, satisfy the demand of the big discharge capacity under the heating mode.Wherein, the refrigerant circulation circuit under the heating mode is: compressor → cross valve → indoor heat exchanger → outdoor heat exchanger → cross valve → compressor.
Preferably, under refrigeration mode, heating mode, change the mode of communicating of the inside of cross valve, change the refrigerant circulating path, make that refrigerant can be according to predetermined circuit cycle under refrigeration, the heating mode.
More than be merely specific embodiment of the present invention, do not limit protection scope of the present invention with this; Any replacement and the improvement on the basis of not violating the present invention's design, done all belong to protection scope of the present invention.
Claims (8)
1. low-temperature heating air-conditioning, it includes: compressor, cross valve, indoor heat exchanger and outdoor heat exchanger, this cross valve is connected with this indoor heat exchanger, this outdoor heat exchanger and this compressor; It is characterized in that this compressor forms a refrigerant self circular loop, and on the refrigerant self circular loop, is provided with flow control valve through being connected with the upper end of the knockout of this compressor communicating pipe, is used to control the conducting degree of refrigerant self circular loop.
2. low-temperature heating air-conditioning as claimed in claim 1 is characterized in that described flow control valve is located on the compressor.
3. low-temperature heating air-conditioning as claimed in claim 1; It is characterized in that; Also comprise a pressure sensing capillary, the one of which end is connected between this cross valve and this indoor heat exchanger, and the other end is connected in this flow control valve place; It is used to detect the pressure of this indoor heat exchanger outlet side cold-producing medium, and cooperates the open degree of controlling this flow control valve with this flow control valve.
4. low-temperature heating air-conditioning as claimed in claim 1 is characterized in that, under refrigeration mode; This pressure sensing capillary detection to pressure limit when being 0.4～0.6MPa; This flow control valve complete opening, this communicating pipe communicates with this knockout, the work of refrigerant self circular loop.
5. low-temperature heating air-conditioning as claimed in claim 1 is characterized in that, under heating mode; This pressure sensing capillary detection to pressure limit when being 1.6～2.0MPa; The open degree of this flow control valve is zero, and this communicating pipe does not communicate with this knockout, and the refrigerant self circular loop is closed.
6. like claim 3 or 4 each described low-temperature heating air-conditionings, it is characterized in that the flow process of this refrigerant self circular loop is: compressor → communicating pipe → compressor.
7. low-temperature heating air-conditioning as claimed in claim 3 is characterized in that, under refrigeration mode, the flow process of refrigerant circulation circuit is: compressor → cross valve → outdoor heat exchanger → indoor heat exchanger → cross valve → compressor.
8. low-temperature heating air-conditioning as claimed in claim 4 is characterized in that, under heating mode, the flow process of refrigerant circulation circuit is: compressor → cross valve → indoor heat exchanger → outdoor heat exchanger → cross valve → compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267547 CN102384602B (en) | 2010-08-30 | 2010-08-30 | Low-temperature heating air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267547 CN102384602B (en) | 2010-08-30 | 2010-08-30 | Low-temperature heating air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102384602A true CN102384602A (en) | 2012-03-21 |
| CN102384602B CN102384602B (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010267547 Active CN102384602B (en) | 2010-08-30 | 2010-08-30 | Low-temperature heating air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721227A (en) * | 2012-06-28 | 2012-10-10 | 广东志高空调有限公司 | Air-cooling direct cooling unit |
| CN106595116A (en) * | 2016-12-23 | 2017-04-26 | Tcl空调器(中山)有限公司 | Air conditioner and control method thereof |
| WO2022247075A1 (en) * | 2021-05-26 | 2022-12-01 | 美的集团股份有限公司 | Refrigerant circulation system, control method therefor, and air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09138014A (en) * | 1995-11-14 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2000018739A (en) * | 1998-06-26 | 2000-01-18 | Matsushita Refrig Co Ltd | Heating-cooling combination device |
| CN2494962Y (en) * | 2001-08-16 | 2002-06-12 | 刘清军 | Counter-circulating defroster for refrigerating equipment |
| CN101008535A (en) * | 2007-01-24 | 2007-08-01 | 劳特斯空调(江苏)有限公司 | Low-temperature heating bypass system of air source heat pump |
| CN201373618Y (en) * | 2009-03-12 | 2009-12-30 | 宁波奥克斯电气有限公司 | Variable-frequency heat pump air conditioner capable of avoiding excessively low voltage |
| CN201903214U (en) * | 2010-08-30 | 2011-07-20 | 珠海格力电器股份有限公司 | Low-temperature heating air conditioner |
-
2010
- 2010-08-30 CN CN 201010267547 patent/CN102384602B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09138014A (en) * | 1995-11-14 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2000018739A (en) * | 1998-06-26 | 2000-01-18 | Matsushita Refrig Co Ltd | Heating-cooling combination device |
| CN2494962Y (en) * | 2001-08-16 | 2002-06-12 | 刘清军 | Counter-circulating defroster for refrigerating equipment |
| CN101008535A (en) * | 2007-01-24 | 2007-08-01 | 劳特斯空调(江苏)有限公司 | Low-temperature heating bypass system of air source heat pump |
| CN201373618Y (en) * | 2009-03-12 | 2009-12-30 | 宁波奥克斯电气有限公司 | Variable-frequency heat pump air conditioner capable of avoiding excessively low voltage |
| CN201903214U (en) * | 2010-08-30 | 2011-07-20 | 珠海格力电器股份有限公司 | Low-temperature heating air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721227A (en) * | 2012-06-28 | 2012-10-10 | 广东志高空调有限公司 | Air-cooling direct cooling unit |
| CN106595116A (en) * | 2016-12-23 | 2017-04-26 | Tcl空调器(中山)有限公司 | Air conditioner and control method thereof |
| WO2022247075A1 (en) * | 2021-05-26 | 2022-12-01 | 美的集团股份有限公司 | Refrigerant circulation system, control method therefor, and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102384602B (en) | 2013-08-07 |
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Application publication date: 20120321 Assignee: GREE ELECTRIC APPLIANCE (WUHU) Co.,Ltd. Assignor: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Contract record no.: 2014440000104 Denomination of invention: Low-temperature heating air conditioner Granted publication date: 20130807 License type: Exclusive License Record date: 20140314 |
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Assignee: GREE ELECTRIC APPLIANCE (WUHU) Co.,Ltd. Assignor: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Contract record no.: 2014440000104 Date of cancellation: 20140415 |
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Application publication date: 20120321 Assignee: GREE ELECTRIC APPLIANCE (WUHU) Co.,Ltd. Assignor: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Contract record no.: 2014340000084 Denomination of invention: Low-temperature heating air conditioner Granted publication date: 20130807 License type: Exclusive License Record date: 20140417 |
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