CN1170096C - Uninterrupted heating process and air conditioning system - Google Patents
Uninterrupted heating process and air conditioning system Download PDFInfo
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- CN1170096C CN1170096C CNB011278056A CN01127805A CN1170096C CN 1170096 C CN1170096 C CN 1170096C CN B011278056 A CNB011278056 A CN B011278056A CN 01127805 A CN01127805 A CN 01127805A CN 1170096 C CN1170096 C CN 1170096C
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Abstract
The present invention relates to a refrigeration system, particularly to a running method capable of continuously heating of an air conditioner, and an air conditioner. The air conditioner capable of continuously heating comprises an outdoor heat exchanger, an electromagnetic valve, a compressor, a four-way reversing valve, a stop valve, an indoor heat exchanger, a stop valve, an electromagnetic valve, a throttling device, a one-way valve and heat storage heat exchangers, which are orderly connected, wherein the throttling device and the one-way valve are connected between the outdoor heat exchanger and the stop valve in series; the heat storage heat exchangers are connected with both ends of the one-way valve in parallel; the throttling device is arranged in a connection pipeline of the heat storage heat exchangers and the inlet end of the one-way valve; the heat storage heat exchangers are also provided with two interfaces which are connected with both ends of the electromagnetic valve through the pipeline; one connection pipeline is also provided with the throttling device. By controlling the motion of the electromagnetic valve and the four-way reversing valve, the air conditioner can automatically save residual heat in the heat storage heat exchangers in a mode of latent heat under the working condition of heating. The air conditioner can release heat quantity automatically in a defrosting operation stage, and solves the problem that indoor space can not be heated when the air conditioner is in a defrosting process, so that the air conditioner with a heat pump can heat continuously.
Description
Technical field
The present invention relates to the heat pump type refrigerating system, but be specifically related to a kind of energy make air-conditioning system with accumulation of heat, heat release function heat with defrost process in the operation method of continuously heating and the air-conditioning system of utilizing the continuously heating of above-mentioned operation method.
Background technology
In the prior art, domestic heat pump formula air-conditioning system adopts system architecture flow process as shown in Figure 1 basically, the difference of this system flow and general single cold air conditioning system is to adopt a four-way change-over valve, thereby reaches the refrigeration and the heating operation of system by the conversion of four-way change-over valve.This system flow is the present the following aspects of existing major technique defect map in heating process:
1, general heat pump type air conditioning system is at heating operation after a period of time, more serious frosting phenomenon will appear in the off-premises station heat exchanger surface, air-conditioning system will change its operational mode by four-way change-over valve this moment, this moment, it came down to carry out refrigerating operaton, make the indoor gas temperature descend, and the people who influences air feel comfort level;
2, general heat pump type air conditioning system is in the heating operation incipient stage, the leaving air temp of indoor set is generally lower, be difficult to reach the purpose of quick greenhouse, and when working under the outdoor environmental conditions comparison condition of severe, the preferred temperature that indoor air temperature does not reach the user for a long time may occur, thereby the people who has a strong impact on system feels comfort level.Although existing air-conditioning system adopts electrical auxiliary heater to solve these problems, adopt damage and the safety problem of electrical auxiliary heater existence to equipment;
3, general heat pump type air conditioning system is difficult to regulate according to the variation of environmental condition the output of heating capacity, the output that reaches the heating capacity of air-conditioning system changes with the change of environmental condition, normally adopt converter technique, yet adopt converter technique to have considerable technical barrier on the one hand, on the other hand the system cost height.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of by accumulation of heat, heat-releasing device are set in air-conditioning system, make heat pump type air corditioning system when heating operation, the operation method of continuous heat supply incessantly, make people when using air-conditioning system to heat, can not produce the difference variation of discontinuity, feel comfortable, another technical problem that the present invention will solve is, a kind of air-conditioning system of utilizing the continuously heating of above-mentioned operation method is provided, make people feel more comfortable when using air-conditioning system to heat, the composition of system is simple in structure, is easy to realize.
The technical scheme that the present invention solves the problems of the technologies described above is, the air-conditioning system that a kind of operation method of empty continuously heating is provided and utilizes this method, it is characterized in that, be to have additional accumulation of heat, heat-releasing device and the gauge tap that is connected with system in heat pump type air corditioning system, the operating procedure of its continuously heating is as follows:
When heat pump type air corditioning system carries out heating operation, by being connected pipeline and the gauge tap in the air-conditioning system, with the cold-producing medium that flows through after indoor heat exchanger carries out heat exchange, flow through the regenerative heat exchanger in the system again, make phase-change material in waste heat in the cold-producing medium and the regenerative heat exchanger carry out passing through after the heat exchange inlet chamber external heat exchanger (evaporimeter) after the throttling, storage heater stores heat energy in the mode of phase transformation again;
When need carry out Defrost operation, control system is sent the Defrost operation instruction, reduce the air output of indoor heat exchanger simultaneously, cold-producing medium continues to flow through indoor heat exchanger and emits a part of heat energy, make by gauge tap again and the outdoor heat exchanger heat release defrosting of flowing through of the cold-producing medium also have certain heat energy make the fan of off-premises station out of service simultaneously;
Under the switch control in system, make and flow through the cold-producing medium that outdoor heat exchanger defrosts after the heat exchange and after throttling, enter regenerative heat exchanger again, carry out thermal energy exchange with the phase change heat storage material in the regenerative heat exchanger, take away the heat energy in the storage heater after, flow in the compressor again;
Air-conditioning system repeats above-mentioned heating and the Defrost operation step under the control of control system, air-conditioning system can be heated when Defrost operation incessantly.
But the present invention also provides a kind of air-conditioning system of utilizing the continuously heating of said method, it is characterized in that, comprise the outdoor heat exchanger that connects in regular turn, magnetic valve, compressor, four-way change-over valve, stop valve, indoor heat exchanger, stop valve, magnetic valve, also comprise the throttling arrangement and the check valve that are connected in series between described outdoor heat exchanger and the described stop valve, be connected in the accumulation of heat at described check valve two ends in parallel, the heat release heat exchanger, described regenerative heat exchange, also be provided with throttling arrangement in the connecting line of radiator and described check valve inlet end, described regenerative heat exchanger also is provided with two interfaces that are connected with described magnetic valve two ends by pipeline respectively, and is provided with throttling arrangement in a pipeline therein.
But in above-mentioned air-conditioning system, it is characterized in that described throttling arrangement can be that capillary also can be an electric expansion valve according to continuously heating provided by the invention.
But in above-mentioned air-conditioning system, it is characterized in that, be provided with composite phase-change material in the described regenerative heat exchanger according to continuously heating provided by the invention.
Implement the operation method of air-conditioning system continuously heating provided by the present invention and utilize the air-conditioning system of this method, compare with general heat pump type air conditioning system, in system, have additional a regenerative heat exchanger and two control magnetic valves with and corresponding pipeline, in regenerative heat exchanger, fill a kind of composite phase-change material, this composite phase-change material can play extremely important accumulation of heat and exothermic effects, air-conditioning system is by the motion of control system control magnetic valve and four-way change-over valve, under heating condition, can automatically the form of part waste heat with latent heat of phase change be kept in the regenerative heat exchanger, can make air-conditioning system continue as indoor heat converter at air-conditioning system Defrost operation stage control system heat energy is provided, and make regenerative heat exchanger exchange the heat that it has to cold-producing medium through outdoor heat exchanger; Solve air-conditioning system indoor problem that can not heat in defrost process, can make heat pump type air conditioning system realize continuously heating.Below in conjunction with accompanying drawing, further specify the present invention with preferred embodiment.
Description of drawings
Fig. 1 is the composition structural representation of former heat pump type air conditioning system;
Fig. 2 is the composition structural representation of heat pump type air conditioning system of the present invention;
Fig. 3 flows to schematic diagram for the refrigerant of heat pump type air conditioning system of the present invention when refrigerating operaton;
Fig. 4 flows to schematic diagram for the refrigerant of heat pump type air conditioning system of the present invention when heating regenerative operation;
Fig. 5 flows to schematic diagram for the refrigerant of heat pump type air conditioning system of the present invention when heating and defrosting moves.
The specific embodiment
The present invention mainly is at the current existing defective of refrigeration system flow process, in conjunction with Hydrodynamics Theory, Engineering Thermophysics theory, heat and mass theory and phase-transition heat-storage technology etc., thereby design a kind of novel cooling cycle system flow process, air-conditioning system can be kept at the form of its waste heat with latent heat of phase change under heating condition automatically, will discharge its heat automatically in the air-conditioning system Defrost operation stage; Thereby but the problem of indoor continuously heating in the solution air-conditioning system defrost process makes air-conditioning system reach continuously heating; System flow does not have any interference effect to normal refrigeration, the heating operation of air-conditioning system; This technology adopts a kind of phase change composite material as heat-storing material (prior art).
The composition structure that adopts air-conditioning system of the present invention as shown in Figure 2, comprise the outdoor heat exchanger 10 that connects in regular turn, magnetic valve 12, compressor 1, four-way change-over valve 2, stop valve 3, indoor heat exchanger 4, stop valve 5, magnetic valve 6, also comprise the throttling arrangement 9 and the check valve 7 that are connected in series between outdoor heat exchanger 10 and the stop valve 5, be connected in the regenerative heat exchanger 13 at check valve 7 two ends in parallel, also be provided with throttling arrangement 8 in the connecting line of regenerative heat exchanger 13 and check valve 7 entrance points, regenerative heat exchanger 13 also is provided with two interfaces that are connected with described magnetic valve 12 two ends by pipeline respectively, and be provided with throttling arrangement 11 in a pipeline therein, being provided with a kind of phase change composite material in regenerative heat exchanger 13 is heat-storing material.
Further specify the operation principle of continuously heating air-conditioning system of the present invention below by accompanying drawing;
When normal refrigerating operaton:
The normal refrigerating operaton flow process of air-conditioning system as shown in Figure 3, arrow on the pipeline is the flow direction of cold-producing medium, after the compressed machine 1 compression increasing temperature and pressure of cold-producing medium, cold-producing medium will directly enter four-way change-over valve 2, this moment, four-way change-over valve 2 was in off-position, therefore fluid will be by magnetic valve 12 after by four-way change-over valve 2, magnetic valve 12 is a normally open, this moment, magnetic valve 12 was in off-position, the cold-producing medium that flows through magnetic valve 12 is with inlet chamber external heat exchanger 10 (condenser), after the force air heat exchange of cold-producing medium by outdoor heat exchanger (condenser) and outdoor environment, change a kind of saturated or cold excessively refrigerant liquid into, this moment is because magnetic valve 6 is in off-position, make the pipeline that is connected with magnetic valve 6 close, this cold excessively refrigerant liquid will be through becoming a kind of low temperature after capillary 9 (perhaps electric expansion valve) throttling, the liquid phase of low pressure or vapour-liquid two-phase mixture, because the pipeline that is connected with regenerative heat exchanger 13 has the existence of capillary 8, increased the flow resistance of pipeline greatly, the cold-producing medium that this two-phase is mixed under this situation can only enter check valve 7 by pipeline, the cold-producing medium that flows through check valve 7 enters the connecting line 23 of indoor units by stop valve 5 after through one section pipeline, the cold-producing medium that comes from connecting line 23 enters indoor heat exchanger 4 (evaporimeter), the cold-producing medium of low-temp low-pressure carries out heat exchange with room air in the indoor heat exchanger pipe, the heat (containing latent heat and sensible heat) that the one side cold-producing medium absorbs air in a large number and transmitted makes the temperature and humidity of room air constantly reduce, cold-producing medium becomes saturated or overheated gas after absorbing heat on the other hand, this low pressure, refrigerant of low temperature gas will be through behind the indoor and outdoor unit connecting leg 23, directly by entering four-way change-over valve 2 behind the stop valve 3, refrigerant gas through four-way change-over valve 2 will directly return compressor 1, thereby realize the process of refrigerastion circulation.
When normally heating (accumulation of heat) operation:
The normal heating operation flow process of air-conditioning system as shown in Figure 4, arrow on the pipeline is the flow direction of cold-producing medium, after the compressed machine 1 compression increasing temperature and pressure of cold-producing medium, gas will directly enter four-way change-over valve 2, four-way change-over valve 2 was in and sent electricity condition this moment, therefore fluid will enter stop valve 3 after by four-way change-over valve 2, behind pipe for flowing of refrigerant road 23, this high temperature, the refrigerant gas of high pressure will enter indoor heat exchanger 4 (condenser), high temperature, the refrigerant gas of high pressure carries out heat exchange with room air in indoor heat exchanger 4 pipes, cold-producing medium is emitted heat in a large number on the one hand, by heat exchanger tube and heat exchange fin with the heat transferred room air, thereby make the temperature of room air constantly raise, reach desired air themperature, cold-producing medium becomes saturated or subcooled liquid after by heat release on the other hand, this moment, this saturated or subcooled liquid generally also had higher temperature, therefore this saturated or cold excessively refrigerant liquid is by behind the stop valve 5, this moment, the control system of air-conditioning system can make magnetic valve 6 be in off-position (magnetic valve 6 is closed type), and check valve 7 is oppositely to be connected also to be in closed condition in the pipeline, therefore refrigerant liquid can only enter regenerative heat exchanger 13 by pipeline, refrigerant liquid carries out heat exchange in regenerative heat exchanger 13 inside with phase change heat storage material, cold-producing medium exchanges its sensible heat to heat-storing material, heat-storing material is preserved with the form of latent heat of phase change, after refrigerant liquid process regenerative heat exchanger 13 heat exchange of this high pressure, directly enter capillary 8 (can be electromagnetic expanding valve) from another interface by pipeline, after saturated or mistake cold anticyclone liquid passes through preliminary throttling, enter another section capillary 9 (perhaps electromagnetic expanding valve) again and carry out more deep throttling, through the refrigerant fluid after the throttling is low temperature, the vapour-liquid two-phase mixture of low pressure, the direct inlet chamber external heat exchangers 10 of these vapour-liquid two-phase mixtures (evaporimeter), the cold-producing medium of low-temp low-pressure carries out heat exchange with outdoor air in the outdoor heat exchange organ pipe, the heat (containing latent heat and sensible heat) that cold-producing medium absorbs air in a large number and transmitted, cold-producing medium becomes saturated or overheated gas after absorbing heat, this low pressure, refrigerant of low temperature gas will be by a magnetic valve 12 (magnetic valve 12 be an open type) after through one section pipeline, this moment, magnetic valve 12 was in off-position, refrigerant gas will enter four-way change-over valve 2 after flowing through magnetic valve 12, the refrigerant gas that flows through behind the four-way change-over valve 2 directly turns back to compressor 1 inlet, thus the implementation procedure circulation.
During the heating and defrosting operation:
Refrigeration system contains a certain amount of moisture owing in the outdoor air at heating operation after a period of time, and the surface temperature of outdoor heat exchanger is lower again, to there be this moment the part water vapour to be condensed into the frost layer at heat exchanger surface, the existence of these frost layers will reduce the convective heat-transfer coefficient of heat exchanger on the one hand, to reduce air quantity on the other hand by heat exchanger, therefore after frost thickness acquired a certain degree, system must remove the frost layer.Thereby reach the heat exchange property of raising heat exchanger and the air quantity of heat exchanger;
The process that air-conditioning system also can normally heat when defrosting as shown in Figure 5, arrow on the pipeline is the flow direction of cold-producing medium in the system, after the compressed machine 1 compression increasing temperature and pressure of cold-producing medium, gas will directly enter four-way change-over valve 2, four-way change-over valve 2 was in and sent electricity condition this moment, therefore fluid will enter stop valve 3 after by four-way change-over valve 2, behind one section pipeline 23, this high temperature, the refrigerant gas of high pressure will enter indoor heat exchanger 4 (condenser), high temperature, the refrigerant gas of high pressure carries out the part heat exchange with room air in indoor heat exchanger 4 pipes, reach the temperature of regulating the refrigerant gas that flows through heat exchanger by the air quantity of regulating indoor set, the refrigerant gas that flows through indoor heat exchanger 4 will change saturated cold-producing medium gas or vapour-liquid two-phase mixture into through after the heat exchange, therefore this saturated cold-producing medium gas or vapour-liquid two phase refrigerant are through behind the stop valve 5, this moment magnetic valve 6 is in and send electricity condition (magnetic valve 6 is closed type), the pipeline conducting that magnetic valve 6 is connected, and check valve 7 is for oppositely being in closed condition, connect regenerative heat exchanger 13 to the pipeline of outdoor heat exchanger 10 owing to the existence that capillary 8 and capillary 9 are arranged makes that its flow resistance is very big, therefore this moment, this saturated cold-producing medium gas or vapour-liquid two phase refrigerant will be by magnetic valves 6, cold-producing medium by magnetic valve 6 is with direct inlet chamber external heat exchanger 10 (condenser), this moment this saturated cold-producing medium gas or vapour-liquid two phase refrigerant will be in outdoor heat exchanger 10 pipes white layer of outer and fin surface carries out heat exchange (in order to reduce the loss of heat with the outdoor heat exchange organ pipe, this moment, the blower fan of off-premises station was in off-position), this saturated cold-producing medium gas or vapour-liquid two phase refrigerant will be emitted a large amount of heats, change the cold-producing medium gas into a kind of cold excessively refrigerant liquid on the one hand, the frost layer of heat exchanger tube and the outer fin surface of pipe absorbs a large amount of heats on the other hand, make white melting layer be liquid water, thereby reach the exchange capability of heat of reduction outdoor heat exchanger, the liquid that flows through outdoor heat exchanger 10 will be by one section pipeline, can make this moment magnetic valve 12 (magnetic valve 12 is open type) be in "on" position, therefore the pipeline that connects magnetic valve 12 is closed, refrigerant liquid will enter capillary 11 this moment, change the vapour-liquid two-phase mixture into by one section pipeline after 11 degree of depth throttlings of refrigerant liquid process capillary, directly enter regenerative heat exchanger 13, the cold-producing medium of vapour-liquid two-phase carries out heat exchange in regenerative heat exchanger inside with phase change heat storage material, cold-producing medium absorbs a large amount of heats and changes a kind of overheated or saturated refrigerant gas into, and phase change heat storage material will be owing to emitting heat, by liquid phase transition is solid phase, this moment, this overheated or saturated refrigerant gas will be by entering four-way change-over valve 2 behind one section pipeline, the refrigerant gas that flows through behind the four-way change-over valve 2 directly turns back to compressor 1 inlet, thereby but is implemented in the process circulation of continuously heating in the defrost process.
The invention has the advantages that:
1, air-conditioning refrigeration system flow process of the present invention is compared with the refrigeration system flow process of general heat pump type air conditioning system, want complicated, its fundamental difference is, heating and defrosting flow process provided by the present invention and system can be implemented in auto accumulation heat and the heat release function in the process of heating, thereby realize continuously heating.
2, the needed accessory of air-conditioning system has only increased by two magnetic valves, a storage heater and corresponding pipeline, and the ease of connection of these accessories and air-conditioning system realizes.
Claims (7)
1, a kind of operation method of continuously heating is characterized in that, is provided with the regenerative heat exchanger and the gauge tap that are connected with system in heat pump type air corditioning system, and the operating procedure of its continuously heating is as follows:
When heat pump type air corditioning system carries out heating operation, by being connected the gauge tap in the air-conditioning system, with the cold-producing medium that flows through after indoor heat exchanger carries out heat exchange, flow through the regenerative heat exchanger in the system again, after making waste heat in the cold-producing medium and regenerative heat exchanger carry out heat exchange, through throttling, inlet chamber external heat exchanger again, storage heater stores heat energy in the mode of phase transformation;
When need carry out Defrost operation, control system is sent the Defrost operation instruction, reduce the air output of indoor heat exchanger simultaneously, cold-producing medium continues to flow through indoor heat exchanger and emits a part of heat energy, make by gauge tap again and the outdoor heat exchanger heat release defrosting of flowing through of the cold-producing medium also have certain heat energy make the fan in the off-premises station out of service simultaneously;
By the switch in the control piper, outdoor heat exchanger cold-producing medium after the heat exchange regenerative heat exchanger of flowing through again after throttling that defrosts will be flow through, carry out thermal energy exchange with the phase change heat storage material in the regenerative heat exchanger, take away the heat energy in the storage heater after, flow in the compressor again;
Air-conditioning system according to the needs of environment, repeats above-mentioned heating and the Defrost operation step under the control of control system, air-conditioning system can be heated when carrying out Defrost operation incessantly.
2, according to the operation method of the described continuously heating of claim 1, it is characterized in that, be provided with composite phase-change material in the described regenerative heat exchanger.
3, a kind of air-conditioning system of utilizing the described operation method of claim 1 to realize continuously heating, it is characterized in that, comprise the outdoor heat exchanger (10) that connects in regular turn, magnetic valve (12), compressor (1), four-way change-over valve (2), stop valve (3), indoor heat exchanger (4), stop valve (5), magnetic valve (6), also comprise the throttling arrangement (9) and the check valve (7) that are connected in series between described outdoor heat exchanger (10) and the described stop valve (5), be connected in the regenerative heat exchanger (13) at described check valve (7) two ends in parallel, also be provided with throttling arrangement (8) in the connecting line of described regenerative heat exchanger (13) and described check valve (7) entrance point, described regenerative heat exchanger (13) also is provided with two interfaces that are connected with described magnetic valve (12) two ends by pipeline respectively, wherein also is provided with throttling arrangement (11) in a connecting line.
According to the described system of claim 3, it is characterized in that 4, described throttling arrangement (8) is capillary or electric expansion valve.
According to the described system of claim 3, it is characterized in that 5, described throttling arrangement (9) is capillary or electric expansion valve.
According to the described system of claim 3, it is characterized in that 6, described throttling arrangement (11) is capillary or electric expansion valve.
According to the described system of one of claim 3-6, it is characterized in that 7, described regenerative heat exchanger is provided with composite phase-change material in (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011278056A CN1170096C (en) | 2001-08-29 | 2001-08-29 | Uninterrupted heating process and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011278056A CN1170096C (en) | 2001-08-29 | 2001-08-29 | Uninterrupted heating process and air conditioning system |
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| Publication Number | Publication Date |
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| CN1403756A CN1403756A (en) | 2003-03-19 |
| CN1170096C true CN1170096C (en) | 2004-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011278056A Expired - Fee Related CN1170096C (en) | 2001-08-29 | 2001-08-29 | Uninterrupted heating process and air conditioning system |
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| CN102494376A (en) * | 2011-11-28 | 2012-06-13 | 林贤华 | Turbocharging multiplex heat-pump and hot-water three-purpose air-conditioning system |
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| CN100422653C (en) * | 2003-04-08 | 2008-10-01 | 林荣恒 | Multipurpose refrigerating and heating air-conditioning equipment |
| CN100529587C (en) * | 2005-09-15 | 2009-08-19 | 株式会社创造21 | Air conditioning system for communication equipment and controlling method thereof |
| CN101004302B (en) * | 2006-01-25 | 2011-05-04 | 武汉凯龙技术开发有限责任公司 | Frostless air-source heat pump |
| GB0802445D0 (en) | 2008-02-11 | 2008-03-19 | Penfold William L | Low energy cooling device |
| CN101338960B (en) * | 2008-08-13 | 2010-04-21 | 哈尔滨工业大学 | Continuous heat supply phase-change energy storage defrosting system |
| CN102538272B (en) * | 2012-02-09 | 2013-10-09 | 美的集团股份有限公司 | Air-conditioning system and defrosting method thereof |
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2001
- 2001-08-29 CN CNB011278056A patent/CN1170096C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494376A (en) * | 2011-11-28 | 2012-06-13 | 林贤华 | Turbocharging multiplex heat-pump and hot-water three-purpose air-conditioning system |
| CN102494376B (en) * | 2011-11-28 | 2013-12-04 | 林贤华 | Turbocharging multiplex heat-pump and hot-water three-purpose air-conditioning system |
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| CN1403756A (en) | 2003-03-19 |
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