CN104567149A - Low-temperature heat-storage defrosting-assisting air conditioner and control method - Google Patents
Low-temperature heat-storage defrosting-assisting air conditioner and control method Download PDFInfo
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- CN104567149A CN104567149A CN201310482517.4A CN201310482517A CN104567149A CN 104567149 A CN104567149 A CN 104567149A CN 201310482517 A CN201310482517 A CN 201310482517A CN 104567149 A CN104567149 A CN 104567149A
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- Prior art keywords
- valve
- pipe
- defrosting
- stop valve
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a low-temperature heat-storage defrosting-assisting air conditioner. The low-temperature heat-storage defrosting-assisting air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a four-way valve, a heat storage device, a first stop valve, a second stop valve, a first sensor, a second sensor and a defrosting flow path control valve, wherein the heat storage device comprises a first pipe orifice and a second pipe orifice; the second pipe orifice is connected between the indoor heat exchanger and the second stop valve through the first stop valve; the second sensor is arranged at the first pipe orifice; the first pipe orifice is connected between the second stop valve and the indoor heat exchanger, and connected between a fourth pipe of the four-way valve and the indoor heat exchanger through the defrosting flow path control valve; the first sensor is arranged inside the heat storage device. The low-temperature heat-storage defrosting-assisting air conditioner disclosed by the invention can improve the defrosting capacity of the outdoor unit of the air conditioner, shortens the defrosting running time, and increases the whole heating capacity of the air conditioner system.
Description
Technical field
The present invention relates to air-conditioner defrosting field, particularly relate to a kind of low-temperature heat accumulating assisting defrosting air-conditioning and control method.
Background technology
In daily air-conditioning heating process, when outdoor environment high humidity, when temperature is too low, moisture in air will condense on air-conditioner outdoor unit, blocking heat exchange path, finally cause air-conditioner outdoor unit to lose exchange capability of heat, therefore air-conditioner outdoor unit just must enter defrosting mode defrost to air-conditioner outdoor unit in operation a period of time.
General air-conditioner defrosting is realized by the heat exchange pattern of switching air conditioner indoor set, namely by indoor apparatus of air conditioner is converted to refrigeration mode, absorbs heat indoor and be supplied to air conditioner outdoor machine defrosting.Due to international regulations defrosting time takies the heating operation time can not more than 20%, the time of Defrost operation is generally no more than 15min.In the area of part high humidity, air-conditioner outdoor unit is long-pending frost easily, or under outdoor snowy weather, when defrosting in the early stage, occur that air-conditioner outdoor unit amasss frost and except clean, cannot cause follow-up heating operation, the phenomenon that long-pending frost accumulation is frozen sometimes, thus cause air-conditioner outdoor unit heat exchange to be lost efficacy, have a strong impact on heating effect during normal operation.And the air-conditioner outdoor unit selecting heating capacity large, increase engineering cost too much again.
Summary of the invention
The object of the present invention is to provide a kind of low-temperature heat accumulating assisting defrosting air-conditioning, the waste heat returning refrigerant can be effectively utilized and defrost.
Another object of the present invention is to provide a kind of control method to realize the optimized control of above-mentioned defrosting air-conditioning heating defrosting.
Corresponding a kind of low-temperature heat accumulating assisting defrosting air-conditioning, comprises indoor heat exchanger, outdoor heat exchanger, cross valve, regenerative apparatus, the first stop valve, the second stop valve, first sensor, the second sensor and defrosting flow circuit control valve;
First pipe of described cross valve is linked in sequence described compressor, gas-liquid separator, 3rd pipe of cross valve, described outdoor heat exchanger connects the second pipe of described cross valve, also be linked in sequence described second stop valve, indoor heat exchanger, 4th pipe of cross valve, described regenerative apparatus comprises first mouth of pipe and second mouth of pipe, described second mouth of pipe connects between described outdoor heat exchanger and described second stop valve by described first stop valve, described first mouth of pipe is provided with described second sensor, also connect between described second stop valve and described indoor heat exchanger respectively, connect between the 4th pipe of described cross valve and described indoor heat exchanger by described defrosting flow circuit control valve, described first sensor is located at the inside of described regenerative apparatus.
As a further improvement on the present invention, described first stop valve is choke valve.
As a further improvement on the present invention, described defrosting flow circuit control valve is magnetic valve.
As a further improvement on the present invention, the path that described defrosting flow circuit control valve connects between described outdoor heat exchanger and described cross valve is also provided with defrosting flow control check valve.
As a further improvement on the present invention, described indoor heat exchanger has several, composes in parallel multi-connected machine.
As a further improvement on the present invention, the accumulation of heat working medium of described regenerative apparatus is low-temperature phase-change energy-storing material.
As a further improvement on the present invention, be fin pipe by the heat exchanger tube of described regenerative apparatus.
Corresponding a kind of control method applying above-mentioned low-temperature heat accumulating assisting defrosting air-conditioning, comprises the following steps:
Receive air-conditioning work mode control signal;
Control the mode of communicating of described cross valve;
Judge the detected temperatures relation of described first sensor and described second sensor;
Control the first stop valve, the second stop valve, defrosting flow circuit control valve and/or indoor heat exchanger.
As a further improvement on the present invention, comprise the following steps:
Receive air-conditioning heating mode control signal;
The first pipe controlling described cross valve is communicated with the 4th pipe, the second pipe is communicated with the 3rd pipe;
If described first sensor detected temperatures is less than described second sensor detected temperatures, then open described first stop valve, close described second stop valve, defrosting flow circuit control valve;
If described first sensor detected temperatures is greater than described second sensor detected temperatures, then open described second stop valve, close described first stop valve, defrosting flow circuit control valve.
As a further improvement on the present invention, comprise the following steps:
Receive air-conditioner defrosting mode control signal;
The first pipe controlling described cross valve is communicated with the second pipe, the 4th pipe is communicated with the 3rd pipe;
If described first sensor detected temperatures is less than described second sensor detected temperatures and predetermined thermal storage device exchange capability of heat constant sum, then open described second stop valve, indoor heat exchanger, close described first stop valve, defrosting flow circuit control valve;
If described first sensor detected temperatures is greater than described second sensor detected temperatures and predetermined thermal storage device exchange capability of heat constant sum, then close described second stop valve, indoor heat exchanger, open described first stop valve, defrosting flow circuit control valve.
Compared with prior art, the present invention is by when heating operation, judge regenerative apparatus heat by sensor and absorb the waste heat returning refrigerant after indoor apparatus of air conditioner heats, when Defrost operation, judged the amount of stored heat of regenerative apparatus by sensor, defrost to air-conditioner outdoor unit, the defrosting ability of air-conditioner outdoor unit can be improved, reduce the Defrost operation time, improve the overall heating capacity of air-conditioning system.
Accompanying drawing explanation
Fig. 1 is an embodiment of the present invention heating mode schematic diagram.
Fig. 2 is an embodiment of the present invention defrosting mode schematic diagram.
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
As shown in Figure 1, one embodiment of the present invention.Low-temperature heat accumulating assisting defrosting air-conditioning comprises indoor heat exchanger 10, compressor 20, gas-liquid separator 21, outdoor heat exchanger 22, cross valve 23, regenerative apparatus 24, first stop valve 25, second stop valve 26, defrosting solenoid valve for controlling flow path 27, defrosting flow control check valve 28, tracheae stop valve 31 and liquid pipe stop valve 32.The effect of defrosting flow control check valve 28 is that under preventing heating mode better, HTHP refrigerant is revealed by defrosting solenoid valve for controlling flow path 27.Indoor heat exchanger 10 is provided with several multi-joint units of formation that is connected in parallel.Liquid pipe stop valve 32 and tracheae stop valve 31 play connection function when installing for off-premises station and indoor set, are in open mode after installation.The d pipe of cross valve 23 is connected compressor 20 and is connected the s pipe of cross valve 23 by gas-liquid separator 21.Outdoor heat exchanger 22 connects the c pipe of cross valve 23, second stop valve 26 that is also linked in sequence, liquid pipe stop valve 32, indoor heat exchanger 10.Indoor heat exchanger 10 connects the e pipe of cross valve 23 by tracheae stop valve 31.Regenerative apparatus 24 comprises first mouth of pipe 241 and second mouth of pipe 242, first mouth of pipe 241 is connected between the e pipe of cross valve 23 and tracheae stop valve 31 by defrosting solenoid valve for controlling flow path 27, defrosting flow control check valve 28, and first mouth of pipe 241 also connects between the second stop valve 26 and liquid pipe stop valve 32.Second mouth of pipe 242 of regenerative apparatus 24 is by between the first stop valve 25 junction chamber external heat exchanger 22 and the second stop valve 26.The accumulation of heat of regenerative apparatus 24 can reduce gradually along with use, in order to can and heat storage capacity adapt, the first stop valve 25 preferably adopts choke valve to regulate.
Regenerative apparatus 24 is the container of heat exchanger tube, heat exchanger tube preferably adopts fin pipe, improve heat exchange efficiency better, the inside accumulation of heat working medium of regenerative apparatus 24 is low-temperature phase-change energy-storing material, such as paraffin and resin acid type organic also can be the material that the amount of stored heat such as ethylene glycol, salt solution, SAS are large.In heat-accumulating process, high temperature refrigerant enters the heat exchanger tube of regenerative apparatus 24, heats low-temperature heat accumulating working medium, and accumulation of heat working medium is in heat accumulation process, and phase changes, and solid transformation is liquid, has laid in amount of heat.Refrigerant enthalpy after heat exchange reduces, and adds the exchange capability of heat of refrigerant, enters when outdoor heat exchanger 22 evaporates and can absorb more heat, thus improve the heat exchange efficiency of outdoor heat exchanger 22.
When air-conditioning is in heating mode, receive air-conditioning heating mode control signal, the d pipe controlling cross valve 23 is communicated with e pipe, and c pipe is communicated with s pipe, and defrosting solenoid valve for controlling flow path 27 is closed.Compressor 20 absorbs low pressure refrigerant from gas-liquid separator 21, be compressed into high pressure gaseous refrigerant, change through cross valve 23, after entering the e pipe of cross valve 23, enter indoor heat exchanger 10 by tracheae stop valve 31 to heat, the HTHP liquid state of condensation or admixture refrigerant are divided into two-way by liquid pipe stop valve 32, and a road is through regenerative apparatus 24, first stop valve 25, an other road is through the second stop valve 26, and two-way then all carries out heat absorption evaporation through outdoor heat exchanger 22.After evaporation, low-pressure gaseous refrigerant is through the conversion direction of cross valve 23, enters gas-liquid separator 22, thus completes and heat circulation.First sensor is provided with in the inside of regenerative apparatus 24, the second sensor is provided with at the first mouth of pipe 241 place of regenerative apparatus 24, according to the relation of the detected temperatures of first sensor and the detected temperatures of the second sensor, control the switch of the first stop valve 25, second stop valve 26.When the detected temperatures of first sensor is greater than the detected temperatures of the second sensor, close the first stop valve 25, open the second stop valve 26, refrigerant is circulated by the second stop valve 26, and regenerative apparatus 24 does not absorb heat.When the detected temperatures of first sensor is less than the detected temperatures of the second sensor, open the first stop valve 25, close the second stop valve 26, make refrigerant through regenerative apparatus 24, regenerative apparatus 24 heat supply is absorbed heat.
As shown in Figure 2, when air-conditioning is in defrosting mode, receive air-conditioner defrosting mode control signal, the d pipe controlling cross valve 23 is communicated with c pipe, and e pipe is communicated with s pipe.Compressor 20 absorbs low pressure refrigerant from gas-liquid separator 21, is compressed into high pressure gaseous refrigerant, changes through cross valve 23, enters outdoor heat exchanger 22 defrosting by the c pipe of cross valve 23.In defrost process, when the detected temperatures that the detected temperatures of first sensor is greater than the second sensor is with predetermined value (predetermined value is the constant relevant with thermal storage device exchange capability of heat) sum, think that regenerative apparatus 24 amount of stored heat can meet the requirement of defrosting, open the first stop valve 25, defrosting solenoid valve for controlling flow path 27, close the second stop valve 26, indoor heat exchanger 10, refrigerant is circulated by regenerative apparatus 24.When the detected temperatures of first sensor is less than detected temperatures and the predetermined value sum of the second sensor, think that regenerative apparatus 24 amount of stored heat is not enough, be difficult to the requirement reaching defrosting, close the first stop valve 25, defrosting solenoid valve for controlling flow path 27, open the second stop valve 26, indoor heat exchanger 10, make refrigerant enter indoor heat exchanger 10 by the second stop valve 26, liquid pipe stop valve 32, absorption portion heat indoor, for outer machine defrosting.Due in refrigerant circulation process, refrigerant absorbs heat from regenerative apparatus 24, and the heat that when adding defrosting, refrigerant absorbs, thus low pressure when improve defrosting, and system refrigerant circulation, improve the ability of air-conditioner defrosting.
In sum, the present invention is by when heating operation, judge regenerative apparatus heat by sensor and absorb the waste heat returning refrigerant after indoor apparatus of air conditioner heats, when Defrost operation, judged the amount of stored heat of regenerative apparatus by sensor, defrost to air-conditioner outdoor unit, the defrosting ability of air-conditioner outdoor unit can be improved, reduce the Defrost operation time, improve the overall heating capacity of air-conditioning system.
Be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (10)
1. a low-temperature heat accumulating assisting defrosting air-conditioning, comprises indoor heat exchanger, outdoor heat exchanger, cross valve, regenerative apparatus;
It is characterized in that, described low-temperature heat accumulating assisting defrosting air-conditioning also comprises the first stop valve, the second stop valve, first sensor, the second sensor and defrosting flow circuit control valve;
First pipe of described cross valve is linked in sequence described compressor, gas-liquid separator, 3rd pipe of cross valve, described outdoor heat exchanger connects the second pipe of described cross valve, also be linked in sequence described second stop valve, indoor heat exchanger, 4th pipe of cross valve, described regenerative apparatus comprises first mouth of pipe and second mouth of pipe, described second mouth of pipe connects between described outdoor heat exchanger and described second stop valve by described first stop valve, described first mouth of pipe is provided with described second sensor, also connect between described second stop valve and described indoor heat exchanger respectively, connect between the 4th pipe of described cross valve and described indoor heat exchanger by described defrosting flow circuit control valve, described first sensor is located at the inside of described regenerative apparatus.
2. low-temperature heat accumulating assisting defrosting air-conditioning according to claim 1, is characterized in that, described first stop valve is choke valve.
3. low-temperature heat accumulating assisting defrosting air-conditioning according to claim 1, is characterized in that, described defrosting flow circuit control valve is magnetic valve.
4. low-temperature heat accumulating assisting defrosting air-conditioning according to claim 1, is characterized in that, described defrosting flow circuit control valve connects on the path between described outdoor heat exchanger and described cross valve and is also provided with defrosting flow control check valve.
5. low-temperature heat accumulating assisting defrosting air-conditioning according to claim 1, it is characterized in that, described indoor heat exchanger has several, composes in parallel multi-connected machine.
6. low-temperature heat accumulating assisting defrosting air-conditioning according to claim 1, is characterized in that, the accumulation of heat working medium of described regenerative apparatus is low-temperature phase-change energy-storing material.
7. low-temperature heat accumulating assisting defrosting air-conditioning according to claim 1, is characterized in that, is fin pipe by the heat exchanger tube of described regenerative apparatus.
8. application rights requires a control method for the low-temperature heat accumulating assisting defrosting air-conditioning described in 1, it is characterized in that, comprises the following steps:
Receive air-conditioning work mode control signal;
Control the mode of communicating of described cross valve;
Judge the detected temperatures relation of described first sensor and described second sensor;
Control the first stop valve, the second stop valve, defrosting flow circuit control valve and/or indoor heat exchanger.
9. control method according to claim 8, is characterized in that, comprises the following steps:
Receive air-conditioning heating mode control signal;
The first pipe controlling described cross valve is communicated with the 4th pipe, the second pipe is communicated with the 3rd pipe;
If described first sensor detected temperatures is less than described second sensor detected temperatures, then open described first stop valve, close described second stop valve, defrosting flow circuit control valve;
If described first sensor detected temperatures is greater than described second sensor detected temperatures, then open described second stop valve, close described first stop valve, defrosting flow circuit control valve.
10. control method according to claim 8, is characterized in that, comprises the following steps:
Receive air-conditioner defrosting mode control signal;
The first pipe controlling described cross valve is communicated with the second pipe, the 4th pipe is communicated with the 3rd pipe;
If described first sensor detected temperatures is less than described second sensor detected temperatures and predetermined thermal storage device exchange capability of heat constant sum, then open described second stop valve, indoor heat exchanger, close described first stop valve, defrosting flow circuit control valve;
If described first sensor detected temperatures is greater than described second sensor detected temperatures and predetermined thermal storage device exchange capability of heat constant sum, then close described second stop valve, indoor heat exchanger, open described first stop valve, defrosting flow circuit control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310482517.4A CN104567149B (en) | 2013-10-16 | 2013-10-16 | Low-temperature heat-storage defrosting-assisting air conditioner and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310482517.4A CN104567149B (en) | 2013-10-16 | 2013-10-16 | Low-temperature heat-storage defrosting-assisting air conditioner and control method |
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| CN104567149A true CN104567149A (en) | 2015-04-29 |
| CN104567149B CN104567149B (en) | 2017-01-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885406A (en) * | 2017-04-17 | 2017-06-23 | 珠海格力电器股份有限公司 | Air conditioner control method, device and system |
| CN107940730A (en) * | 2017-12-27 | 2018-04-20 | 唐玉敏 | A kind of quick defrosting method |
| CN110701747A (en) * | 2019-09-26 | 2020-01-17 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
| CN114484750A (en) * | 2022-01-28 | 2022-05-13 | 青岛海尔空调电子有限公司 | Control method and device for air conditioning system, air conditioning system and storage medium |
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| JP2012077942A (en) * | 2010-09-30 | 2012-04-19 | Panasonic Corp | Air conditioner |
| CN102620493A (en) * | 2012-04-12 | 2012-08-01 | 东华大学 | Heat pump defrosting system in winter |
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Patent Citations (4)
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| CN101270936A (en) * | 2008-04-29 | 2008-09-24 | 天津商业大学 | Refrigerating cycle system adopting heat pump to melt frost |
| JP2012077942A (en) * | 2010-09-30 | 2012-04-19 | Panasonic Corp | Air conditioner |
| CN102003853A (en) * | 2010-12-20 | 2011-04-06 | 哈尔滨工业大学 | Multi-connected unit phase change energy storage hot liquid defrosting system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885406A (en) * | 2017-04-17 | 2017-06-23 | 珠海格力电器股份有限公司 | Air conditioner control method, device and system |
| CN107940730A (en) * | 2017-12-27 | 2018-04-20 | 唐玉敏 | A kind of quick defrosting method |
| CN110701747A (en) * | 2019-09-26 | 2020-01-17 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
| CN110701747B (en) * | 2019-09-26 | 2020-10-27 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
| CN114484750A (en) * | 2022-01-28 | 2022-05-13 | 青岛海尔空调电子有限公司 | Control method and device for air conditioning system, air conditioning system and storage medium |
| CN114484750B (en) * | 2022-01-28 | 2024-05-14 | 青岛海尔空调电子有限公司 | Control method and device for air conditioning system, air conditioning system and storage medium |
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| CN104567149B (en) | 2017-01-11 |
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Granted publication date: 20170111 Termination date: 20211016 |