CN107178924A - A kind of accumulation of heat is not shut down except defrosting system and air-conditioning - Google Patents

A kind of accumulation of heat is not shut down except defrosting system and air-conditioning Download PDF

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Publication number
CN107178924A
CN107178924A CN201710366033.1A CN201710366033A CN107178924A CN 107178924 A CN107178924 A CN 107178924A CN 201710366033 A CN201710366033 A CN 201710366033A CN 107178924 A CN107178924 A CN 107178924A
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CN
China
Prior art keywords
storage heater
heat
valve
shut down
compressor
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Pending
Application number
CN201710366033.1A
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Chinese (zh)
Inventor
蔡德华
梁翛
何国庚
邱承博
刘越
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CN201710366033.1A priority Critical patent/CN107178924A/en
Publication of CN107178924A publication Critical patent/CN107178924A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24Storage receiver heat
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention belongs to filed of air conditioning, and disclose a kind of accumulation of heat and do not shut down except defrosting system and air-conditioning.Including the first storage heater, compressor, the second storage heater, four-way reversing valve, gas-liquid separator and choke valve, the first storage heater absorbs and stores the heat of compressor operating generation and the heat of flow working medium;Second storage heater absorbs and stores the heat of flow working medium;Multiple control valves are provided with system; in defrosting; the working medium flowed out from compressor is divided into two parts and converged respectively through indoor heat exchanger and outdoor heat exchanger before choke valve; then compressor is returned to after choke valve, the second storage heater, the first storage heater and gas-liquid separator; wherein; working medium is condensed into liquid and by perfusion blower fan to indoor heat release by indoor heat exchanger, realizes that defrosting process is not shut down.By the present invention, the function of heating is taken into account when realizing defrosting, and defrosting speed is fast, and the function of reasonable utilization storage heater reduces electrical heating energy consumption, increases the energy use efficiency of whole system.

Description

A kind of accumulation of heat is not shut down except defrosting system and air-conditioning
Technical field
The invention belongs to filed of air conditioning, do not shut down except defrosting system and air-conditioning more particularly, to a kind of accumulation of heat.
Background technology
With low-carbon environment-friendly theory deeply and the improvement of people's living standards, the application of air source heat pump heating in the winter time Increasingly popularize.The problem of greatest problem of heat pump type air conditioner winter operation is also frosting and defrosting, defrosting process can not only be made Into the decline of room temperature, meanwhile, defrosting process is also unworthy power consumption process, therefore, in terms of comfortableness and energy-conservation two Consider, heat pump frosting and defrosting problem are badly in need of improving and optimized, low-temperature heating is run heat pump type room air conditioner in the winter time When, the meeting frosting of outdoor evaporator fin surface, with the thickening of frost layer, evaporating temperature reduction, heating capacity declines, meanwhile, frost layer Fin surface is covered in, causes fin clearance to diminish, air circulation drop in resistance, fan performance declines, and then is further influenceed It will occur that air-conditioning shuts down phenomenon under heating efficiency, serious conditions.
The market demand for not shutting down Defrost technology that heat pump type air conditioner winter low temperature is heated is more and more obvious, and defrosting is not shut down Technology can cause the defrosting process and heating operations of air conditioner to carry out simultaneously, and temperature drop is little in defrosting process room, room Interior heat exchanger leaving air temp fluctuation is smaller, brings good thermal comfort to experience to user, Defrost method is not shut down many Kind, but it is existing do not shut down the problem of Defrost technology all has certain to varying degrees, be summarized as follows:(1) added using electricity Heat:Advantage is to implement simple, has the disadvantage that energy consumption is big, and with potential safety hazard.This method can not meet the mark of present green product Accurate and requirement;(2) hot-gas bypass:Single hot-gas bypass and double hot-gas bypass can be divided into.The advantage of single hot-gas bypass be it is simple in construction, It is two phase refrigerant to have the disadvantage evaporator outlet, it is desirable to which gas-liquid separator for compressor volume is sufficiently large, prevents liquid from accumulating.By double hot gas Logical advantage is can to reduce evaporator outlet band liquid measure, reduces liquid product risk, but equally exist compressor air-discharging and be insufficient to allow The problem of compressor air suction reaches overheat is obtained, cost is higher;(3) heat of compressor or electric compensation heating are reclaimed using heat-storing material For defrosting.This method is that can utilize compressor case waste heat a little, is conducive to efficiency to be lifted.Have the disadvantage heat-storing material by In needing to be directly sleeved on compressor case, installing space is limited, and finite volume, heat storage capacity is limited, tends not to compensation and removes The refrigerant liquid evaporation endothermic amount of white process.Generally compensated using electric auxiliary heat, energy saving reduction.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, do not shut down except defrosting system the invention provides a kind of heat accumulating type And air-conditioning, by the arrangement and design of the first and second storage heaters, thus solve to shut down during defrosting and thermal compensation is done in electrical heating Technical problem.
To achieve the above object, do not shut down except defrosting system, bag there is provided a kind of heat accumulating type according to one aspect of the present invention Include the first storage heater, compressor, the second storage heater, four-way reversing valve, gas-liquid separator and choke valve, it is characterised in that
First storage heater is wrapped in the outside of the compressor, and is connected on second storage heater and gas-liquid separation Between device, the heat of flow working medium in the heat and the system for absorbing and storing the compressor operating generation;It is described Second storage heater is connected between the indoor heat exchanger of the system and the choke valve, for institute to be absorbed and stored when heating State the heat of flow working medium in system;
The first control valve, the four-way reversing valve and institute are provided between the four-way reversing valve and the gas-liquid separator The second control valve is provided between the outdoor heat exchanger for stating system, is provided between the indoor heat exchanger and the choke valve Four control valves, the 5th control valve and the 6th control valve, the 7th control is provided between the choke valve and second storage heater Valve, the 3rd control valve is provided between second storage heater and first storage heater;
In defrosting, by controlling the switch of each control valve so that the working medium flowed out in the compressor is divided into two parts Converge respectively through the indoor heat exchanger and outdoor heat exchanger, and before the choke valve, then in turn through the throttling Compressor is returned to after valve, the second storage heater, the first storage heater and gas-liquid separator, wherein, the working medium is changed by the interior Hot device is condensed into liquid and by the perfusion blower fan of system to indoor heat release, realizes that defrosting process is not shut down.
It is further preferred that throttle capillary tube is provided between the outdoor heat exchanger and the compressor, for buffering Bypass hot gas.
It is further preferred that the control valve of described first, second, third, fourth, the five, the 6th and the 7th is preferred to use Magnetic valve.
It is further preferred that being filled with phase-change heat-storage material inside first and second storage heater.
It is further preferred that the preferred phase transition temperature of phase-change heat-storage material in first storage heater is 20 DEG C~40 DEG C Material.
It is further preferred that the choke valve is preferred to use electric expansion valve.
It is another aspect of this invention to provide that a kind of air-conditioning, it includes described heat accumulating type and not shut down except defrosting system.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show Beneficial effect:
1st, the present invention reclaims the waste heat of compressor case higher temperature by the first and second storage heaters, while in recovery room Waste heat is subcooled in heat exchanger exit liquid coolant so that defrost process refrigerant liquid evaporation can be fully compensated in recovery waste heat heat Caloric receptivity, reduces the energy consumption that electrical heating is produced;
2nd, the present invention is by by the design of multiple control valves so that working medium flows to indoor heat exchanger during defrosting, then leads to Cross perfusion blower fan and send hot blast to interior so that indoor leaving air temp realizes not shutting down during defrosting, and remove without being decreased obviously White process is without auxiliary heat, and system architecture is simple, and control method is simple, and refrigerant supercooling waste heat can be used as accumulation of heat using water as needed Agent, material realizes zero cost;
3rd, the present invention is wrapped in outside compressor by using by the first storage heater, is occupied little space, and heat storage capacity is strong, full Sufficient long period, more frequently defrosting is required so that unit can preferably adapt to the heating operation environment of low temperature and high relative humidity, is applicable Scope is wide;
4th, the present invention increases capillary on the hot gas line of defrosting bypass, and row buffering bypass is entered to hot gas, on the one hand may be used With the larger compression shock for avoiding outdoor heat exchanger from being subject to, excessive hot gas on the other hand can be avoided to enter outdoor defrosting and cause The decline of indoor heat exchanger heating load is too fast, so that it is too fast to avoid the decline of indoor room temperature moment.
Brief description of the drawings
Fig. 1 is not shut down the structural representation except defrosting system according to the heat accumulating type constructed by the preferred embodiments of the present invention.
In all of the figs, identical reference is used for representing identical element or structure, wherein:
1- indoor heat exchanger 2- perfusion blower fan 3- four-way reversing valve 4- throttle capillary tube 5- gas-liquid separators 6- first Storage heater 7- compressors 8- the second storage heater 9- choke valve 10- outdoor heat exchanger 11- axial flow blowers the first control valves of 12- The control valve 18- the 7th of the 4th the 5th control valve 17- of control valve 16- of 13- the second control valve the 3rd control valve 15- of 14- the 6th Control valve
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below Not constituting conflict each other can just be mutually combined.
Air conditioner disclosed in this invention is mainly used in that outdoor environment temperature is relatively low and area of easy frosting, at these The regional outdoor heat exchanger pipeline frosting that air-conditioning is often resulted in because temperature is relatively low largely effects on the operation of air-conditioning, and common family expenses are empty Heating capacity can be lost and cause indoor temperature to decline to a great extent by adjusting device to enter defrosting mode under the state that heats, and the indoor people of order does not have There is good thermal comfort.In order to solve the above problems, in the present invention, compared to conventional air conditioner, two accumulation of heats have been installed additional Formula heat exchanger, and some transformations have been carried out to some pipelines of Working fluid flow, install the magnetic valve of control switching flow circuits additional And the part such as capillary.
Fig. 1 is not shut down structural representation except defrosting system according to the heat accumulating type constructed by the preferred embodiments of the present invention, As shown in figure 1, air-conditioner system has cooling operation mode, heats/regenerative operation pattern, Defrost operation pattern, and system exists During heating operation mode, while being in regenerative operation pattern automatically.
Under cooling operation mode, 3- four-way reversing valve states are different from Fig. 1, should be lower section be connected with right, top and Left is connected, i.e., in refrigerating state.Only the control valves of 12- first, the control valves of 16- the 5th are in open mode, and 13- second Control valve, the control valves of 14- the 3rd, the control valves of 15- the 4th, the control valves of 17- the 6th, the control valves of 18- the 7th are then in closing shape State, thus, can make working medium be flowed in the first flow circuits.Working medium turns into high temperature and high pressure gas after 7- compressor outlets, leads to Cross and enter 10- outdoor heat exchangers after 3- four-way reversing valves, the condensation heat release to outdoor air is strengthened by 11- axial flow blowers.Work Matter is condensed into after liquid into after the throttling of 9- choke valves and shwoot turns into low-temp low-pressure moist steam, by the control valves of 16- the 5th simultaneously Into 1- indoor heat exchangers, working medium is evaporated in heat exchanger and absorbs heat as gas, and is strengthened and interior by perfusion blower fan The heat exchange of air, reaches refrigeration.Final 3- four-way reversing valves and the control valves of 12- first of again passing by is into 5- gas-liquids point From device, final gas working medium returns to 7- compressors and completes kind of refrigeration cycle.
When air conditioner be in heat/regenerative operation pattern under, 3- four-way reversing valves direction as shown in figure 1, the top of valve with Right is connected, and lower section is connected with left, in the state that heats, and the control valves of 12- first, the control valves of 15- the 4th, 18- the 7th control Valve processed is in open mode, and the control valves of 13- second, the control valves of 14- the 3rd, the control valves of 16- the 5th, the control valves of 17- the 6th It is closed.Thus, working medium in air-conditioner system is made to be flowed in the second flow circuits, from 7- compressor outlets with high temperature High-pressure gaseous state passes through 3- four-way reversing valves, and flows into 1- indoor heat exchangers, passes through the condensation certainly in heat exchanger tube And 2- perfusions blower fan strengthens the heat release to room air, leave 1- indoor heat exchangers and total condensation is into liquid, now liquid Body working medium still has 30-37 degrees Celsius of temperature and band has surplus heat.And then liquid working substance flows through the control valves of 15- the 4th and entered The storage heaters of 8- second, release waste heat to heat-storing material in the storage heaters of 8- second, make the storage heaters of 8- second constantly store heat.Put The thermojunction beam and liquid working substance being subcooled flows through the control valves of 18- the 7th, is throttled, and shwoot one in the process by 9- choke valves Divide gas, working medium in pipeline is turned into wet-steam phase.10- outdoor heat exchangers are directly entered after the outflow of 9- choke valves, are being changed Gas is evaporated in hot device pipeline and amount of heat is absorbed by 11- axial flow blowers, 12- is then passed through by 3- four-way reversing valves First control valve enters 5- gas-liquid separators.Final gas working medium comes out from 5- gas-liquid separators returns to 7- compressors completion system Heat/accumulation of heat circulation.It is worth mentioning that, air-conditioner system be in heat/regenerative operation pattern under, the 4th heat exchange area by The process that the shell of 7- compressors stores compressor heat dissipation energy to the heat release of the heat-storing material of the storage heaters of 6- first, with this begins Carrying out eventually.
When air-conditioner system is under Defrost operation pattern, 3- four-way reversing valves direction is as shown in figure 1, the top and the right side of valve Fang Xianglian, lower section is connected with left, still in the state that heats, and the control valves of 13- second, the control valves of 14- the 3rd, 17- the 6th Control valve, the control valves of 18- the 7th are in open mode, and the control valves of 12- first, the control valves of 15- the 4th, 16- the 5th are controlled Valve is closed.Thus, working medium in air-conditioner system is made to be flowed in the 3rd flow circuits, from the height of 7- compressor outlets Warm gases at high pressure working medium, after 3- four-way reversing valves, is divided into two-way.The first via flows directly into 1- indoor heat exchangers through supercooling Congeal into liquid and by 2- perfusions blower fan to room air heat release, the liquid that condensation terminates flows through the control valves of 17- the 6th until 9- Before choke valve.Second tunnel then flows through the control valves of 3- second and by 4- capillaries to ensure that HTHP working substance steam gently enters 10- outdoor heat exchangers, and in 10- outdoor heat exchangers by being condensed into the frost heat release that liquid is tied to outside heat exchanger tube.Need It should be mentioned that, 11- axial flow blowers are closed in this process.Then this all the way working medium with liquid condition flow to 9- throttling Before valve.After two-way liquid working substance collects before 9- choke valves, throttling shwoot is completed by 9- choke valves, as moist steam, and passed through Cross the control valves of 18- the 7th, flow through the storage heaters of 8- second, and to heating/regenerative operation pattern under store the storages of enough heats Hot material carries out heat absorption evaporation.And then the storage heaters of 6- first are flowed through, and to absorbing the accumulation of heat of 7- compressor case heats all the time Material carries out further absorbing heat to be evaporated up to being gasified totally.Equally, here it is worth mentioning that, even at Defrost operation pattern, The heat dissipation that heat-storing material in the storage heaters of 6- first is also transmitted in absorption from 6- compressor cases all the time.Working medium is in outflow 6- 5- gas-liquid separators are directly entered after first storage heater, final gaseous working medium comes back to 7- compressors and completes defrosting circulation.
The operation control strategy of air-conditioning system provided by the present invention specifically has, under cooling operation mode, four-way reversing valve In refrigerating state, the control valves of 12- first, the control valves of 16- the 5th are opened, and the control valves of 13- second, the control valves of 14- the 3rd, The control valves of 15- the 4th, the control valves of 17- the 6th, the control valves of 18- the 7th are closed;Heating/regenerative operation pattern under, 12- first is controlled Valve processed, the control valves of 15- the 4th, the control valves of 18- the 7th are opened, and the control valves of 13- second, the control valves of 14- the 3rd, 16- the 5th are controlled Valve processed, the control valves of 17- the 6th are closed;Due to outdoor heat exchanger frosting it is serious when, then system is by heating/regenerative operation pattern switching To Defrost operation pattern, 11- axial flow blowers are first shut off, the control valves of 15- the 4th are then switched off, and make system continue to run with about 40 seconds, the purpose is to evacuate the refrigerant liquid inside 10- outdoor heat exchangers and the storage heaters of 8- second, to enter defrosting fortune It is more rapid and efficient during row mode.The state for then keeping throttle valve opening and the control valves of 16- the 5th to close, and close The control valves of 12- first, open the control valves of 13- second, the control valves of 14- the 3rd and the control valves of 17- the 6th, now, system is then entered Enter Defrost operation pattern.When outdoor temperature sensor, which detects outdoor heat exchanger tube wall temperature, reaches 15 DEG C, defrost is completed, then Again it is switched to and heats/regenerative operation pattern.System is made to return to the control valves of 12- first, the control valves of 15- the 4th, the controls of 18- the 7th Valve is opened, and the state that the control valves of 13- second, the control valves of 14- the 3rd, the control valves of 16- the 5th, the control valves of 17- the 6th are closed, and Outdoor unit blower fan restarts.
Air conditioner unit disclosed in this invention, defrosting speed is exceedingly fast, and efficiency is higher.By couple heating operation mode with Regenerative operation pattern, stores its heat, in the energy of defrosting process while making condensed liquid working substance supercooling in heating operations Re-used in amount compensation, and realize the non-stop-machine purpose of defrosting, on the basis of the overall efficiency of air conditioner unit is improved, improved The thermal comfort of people indoors.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include Within protection scope of the present invention.

Claims (7)

1. a kind of heat accumulating type is not shut down except defrosting system, including the first storage heater, compressor, the second storage heater, four-way reversing valve, gas Liquid/gas separator and choke valve, it is characterised in that
First storage heater is wrapped in the outside of the compressor, and be connected on second storage heater and gas-liquid separator it Between, the heat of flow working medium in the heat and the system for absorbing and storing the compressor operating generation;Described second Storage heater is connected between the indoor heat exchanger of the system and the choke valve, for the system to be absorbed and stored when heating The heat of flow working medium in system;
The first control valve, the four-way reversing valve and the system are provided between the four-way reversing valve and the gas-liquid separator The second control valve is provided between the outdoor heat exchanger of system, the 4th control is provided between the indoor heat exchanger and the choke valve Valve processed, the 5th control valve and the 6th control valve, the 7th control valve, institute are provided between the choke valve and second storage heater State and be provided with the 3rd control valve between the second storage heater and first storage heater;
In defrosting, by controlling the switch of each control valve so that the working medium flowed out in the compressor is divided into two parts and distinguished Converge by the indoor heat exchanger and outdoor heat exchanger, and before the choke valve, then in turn through the choke valve, Compressor is returned to after two storage heaters, the first storage heater and gas-liquid separator, wherein, the working medium is cold by the indoor heat exchanger Congeal into liquid and by the perfusion blower fan of system to indoor heat release, realize that defrosting process is not shut down.
2. heat accumulating type as claimed in claim 1 is not shut down except defrosting system, it is characterised in that the outdoor heat exchanger and the pressure Throttle capillary tube is provided between contracting machine, for buffering bypass hot gas.
3. heat accumulating type as claimed in claim 1 is not shut down except defrosting system, it is characterised in that described first, second, third, 4th, the five, the 6th and the 7th control valve is preferred to use magnetic valve.
4. heat accumulating type as claimed in claim 1 is not shut down except defrosting system, it is characterised in that in first and second storage heater Portion is filled with phase-change heat-storage material.
5. heat accumulating type as claimed in claim 4 is not shut down except defrosting system, it is characterised in that the phase transformation in first storage heater The preferred phase transition temperature of heat accumulating is 20 DEG C~40 DEG C of material.
6. heat accumulating type as claimed in claim 1 is not shut down except defrosting system, it is characterised in that the choke valve is preferred to use electronics Expansion valve.
7. a kind of air-conditioning, including heat accumulating type as described in claim any one of 1-6 is not shut down except defrosting system.
CN201710366033.1A 2017-05-23 2017-05-23 A kind of accumulation of heat is not shut down except defrosting system and air-conditioning Pending CN107178924A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108278791A (en) * 2018-01-19 2018-07-13 江苏科技大学 The air source air conditioning system and Defrost method of Two-cuff Technique device
CN108638785A (en) * 2018-04-16 2018-10-12 中国科学院广州能源研究所 Novel electric vehicle heat pump air conditioning system based on phase-change energy storage defrosting and its control method
CN109269017A (en) * 2018-09-03 2019-01-25 南京天加环境科技有限公司 A kind of multi-connected machine single module system for not shutting down defrosting
CN109959180A (en) * 2017-12-25 2019-07-02 南通华信中央空调有限公司 Air-conditioning system and its Defrost method
CN113531967A (en) * 2021-06-24 2021-10-22 西安交通大学 Compressor waste heat recovery defrosting system based on phase change energy storage and working method

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Application publication date: 20170919