CN102141282A - Heating method of air conditioner - Google Patents
Heating method of air conditioner Download PDFInfo
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- CN102141282A CN102141282A CN2010103010153A CN201010301015A CN102141282A CN 102141282 A CN102141282 A CN 102141282A CN 2010103010153 A CN2010103010153 A CN 2010103010153A CN 201010301015 A CN201010301015 A CN 201010301015A CN 102141282 A CN102141282 A CN 102141282A
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Abstract
The invention discloses a heating method of an air conditioner, which comprises a heating stage and a defrosting stage. In the heating stage, an indoor fan and an outdoor fan of the air conditioner can operate simultaneously so that an indoor heat exchanger and an outdoor heat exchanger can carry out heat energy exchange with the air indoors and outdoors respectively; a compressor keeps in a heating work state, a four-way valve is in an opening state and an indoor electric heater optionally works. In the defrosting stage, the indoor fan and the outdoor fan are in the operating state; the compressor refrigerates reversely, the four-way valve is in a stopping state and an outdoor electric heater heats the condenser; and the indoor electric heater starts working when the indoor temperature is reduced to the lower limit temperature of the set temperature, so as to keep the indoor temperature in a set temperature range, so that the condition that the indoor temperature is rapidly decreased when the air conditioner is in a defrosting state to result in the discomfort of the bodies of users is avoided.
Description
Technical field
The present invention relates to the technical field of air-conditioner, be specifically a kind of when air-conditioner carries out Defrost operation indoor electric heater and outdoor electric heater work simultaneously, keep the heating method of the air-conditioner of indoor temperature by indoor electric heater heating.
Background technology
In general, air-conditioner is: evaporate in summer → compress → kind of refrigeration cycle of the sequential loop of condensation → expansion, change cross valve in the winter time, carry out heating circulation, indoor temperature is maintained refrigeration or heating on user's desired level with the reverse heat pump of kind of refrigeration cycle.Air-conditioner has both refrigeration or heat-production functions usually, changes into clean air after suction chamber internal contamination air filters again to the air-cleaning function of indoor discharge, sucks humid air and changes into behind the dry air again to the dehumidification function of indoor discharge etc.
Fig. 1 is the structural representation of air-conditioner in the prior art.
As shown in Figure 1, indoor heat converter 12 is installed in indoor suction inlet 14 rears that are positioned at air conditioner room unit 10 fronts.So the conduit 20 that the inside of indoor heat converter 12 has refrigerant to flow is by refrigerant that flows at conduit 20 and the temperature of adjusting air conditioning space 1 from the process of the heat exchange between the room air of indoor suction inlet 14 suctions.That is, air-conditioner, in cooling operation, the low temperature refrigerant and the room air that flow at indoor heat converter 12 carry out heat exchange, reduce the temperature in air conditioning space 1; When heating running, the high temperature refrigerant and the room air that flow at indoor heat converter 12 carry out heat exchange, improve the temperature in air conditioning space 1.
In Fig. 1, drawing reference numeral " 16 " is an indoor fan, and " 35 " are outdoor suction inlets, and " 37 " are outdoor fans.
The following describes the refrigerant circulation of air-conditioner when freezing or heat running.
The situation of air-conditioner cooling operation at first is described.
The HTHP refrigerant of discharging from compressor 34 is according to 36 li of the effect inflow outdoor heat exchangers of cross valve 32.The HTHP refrigerant of inflow outdoor heat exchanger 36 carries out heat exchange with the outdoor air that flows into 30 li of off-premises stations and is condensed into liquid refrigerants, becomes the low-temp low-pressure refrigerant then in the process by expansion gear 38.Then, the low-temp low-pressure refrigerant is 12 li of inflow indoor heat exchangers again, and carry out heat exchange with the room air that flows into indoor set 10, flow into 34 li on compressor after reducing indoor air temperature.Therefore, in the time of cooling operation, refrigerant is recycle compressor 34 → outdoor heat converter 36 → expansion gear 38 → indoor heat converter 12 → compressor 34 repeatedly, and the temperature in air conditioning space 1 is reduced to design temperature.
The following describes the situation of air conditioner heat-production running.
The HTHP refrigerant of discharging from compressor 34 is according to 12 li of the effect inflow indoor heat exchangers of cross valve 32.The HTHP refrigerant that inflow indoor heat exchanger is 12 li carries out heat exchange with the room air that flows into 10 li of indoor sets, and improves the temperature of room air.Then, become the low-temp low-pressure gas coolant when flowing through expansion gear 38, continue then to flow into 34 li on compressors through outdoor heat converter 36 backs through the refrigerant of indoor heat converter 12.Therefore, when heating running, refrigerant is recycle compressor 34 → indoor heat converter 12 → expansion gear 38 → outdoor heat converter 36 → compressor 34 repeatedly, and the temperature in air conditioning space 1 is brought up to design temperature.
Fig. 2 is the operation schematic diagram of heating method of the air-conditioner of prior art.
As shown in Figure 2, the heating method of air-conditioner comprises the stage of heating and defrost phase; In the stage of heating, the indoor fan and the outdoor fan of air-conditioner turn round simultaneously, make indoor heat converter and outdoor heat converter carry out exchange heat with the air of indoor and outdoors respectively, and compressor is kept and heated duty, cross valve is in opening, the work of indoor electric heater selectivity; In defrost phase, indoor fan and outdoor fan are in operating condition, and compressor is reversed refrigeration work, and cross valve is in halted state, and outdoor electric heater heats condenser.
As mentioned above, air-conditioner is when heating running, if outdoor environment is below freezing point temperature and a certain amount of moisture arranged, expose dew on outdoor heat converter 36 surfaces of outdoor environment, and such dew begins to freeze under outdoor temperature condition below freezing, and forms frost.The frost on outdoor heat converter 36 surfaces carry out the discharged air temperature decline of heat exchange thus by indoor heat converter 12, and heat-production functions reduces along with the running that heats of air-conditioner continues to increase gradually.Therefore, in order to remove frost, make air-conditioner also can effectively heat running at environment below freezing, need at set intervals in heating operation process, to need the running that defrosts, promptly in heating the process of running, carry out cooling operation at set intervals during a specified time, during the running that defrosts, outdoor heat converter 36 is emitted heat, melts outdoor heat converter 36 lip-deep frosts.The heat-production functions of air-conditioner stops in when defrosting, and this moment, indoor temperature can descend gradually, and warm in can't holding chamber causes easily that the user's is uncomfortable.When outdoor air humidity was very big, the Defrost operation of air-conditioning in operation process can become very frequent, had a strong impact on the heating performance of air-conditioner.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of when air-conditioner carries out Defrost operation indoor electric heater and outdoor electric heater work simultaneously, keep the heating method of the air-conditioner of indoor temperature by indoor electric heater heating.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
The heating method of air-conditioner of the present invention comprises the stage of heating and defrost phase; In the stage of heating, the indoor fan and the outdoor fan of air-conditioner turn round simultaneously, make indoor heat converter and outdoor heat converter carry out exchange heat with the air of indoor and outdoors respectively, and compressor is kept and heated duty, cross valve is in opening, the work of indoor electric heater selectivity; In defrost phase, indoor fan and outdoor fan are in operating condition, compressor is reversed refrigeration work, cross valve is in halted state, outdoor electric heater heats condenser, set the indoor temperature interval simultaneously, the indoor electric heater is started working when indoor temperature drops to the lower limit temperature of design temperature.
Indoor electric heater intermittent work in defrost phase.
When indoor temperature was increased to the ceiling temperature of design temperature under the effect of indoor electric heater, the indoor electric heater quit work.
In the defrost phase, the operating temperature interval of indoor electric heater indoor design temperature ± 5 ℃ between.
Advantage and good effect that the present invention has are:
In the heating method of air-conditioner of the present invention, when air-conditioner defrosts, outdoor electric heater heats condenser, the indoor electric heater is started working when indoor temperature drops to the lower limit temperature of design temperature, indoor fan rotates room air is drawn in the air-conditioner, and be brought into the heat that the indoor electric heater produces indoor by the air-flow that indoor fan produces, elevate the temperature, thereby indoor temperature is maintained in the range of set temperature, avoid that indoor temperature descends rapidly because air-conditioner is in when defrosting, the user's is uncomfortable and cause.When indoor temperature was elevated to the ceiling temperature of design temperature, electric heater quit work, thereby reached the purpose of saving the energy.
Description of drawings
Fig. 1 is the structural representation of air-conditioner in the prior art;
Fig. 2 is the operation schematic diagram of heating method of the air-conditioner of prior art;
Fig. 3 is the operation schematic diagram of the heating method of air-conditioner of the present invention.
The specific embodiment
It is following that the present invention will be described in detail with reference to drawings and Examples.
Fig. 3 is the operation schematic diagram of the heating method of air-conditioner of the present invention.
During the air conditioner heat-production running, in the effect inflow indoor heat exchanger of HTHP refrigerant according to cross valve of compressor discharge.HTHP refrigerant in the inflow indoor heat exchanger carries out heat exchange with the room air that flows in the indoor set, and improves the temperature of room air.Then, become the low-temp low-pressure gas coolant when flowing through expansion gear, continue then through flowing in the compressor behind the outdoor heat converter through the refrigerant of indoor heat converter.Therefore, when heating running, refrigerant is recycle compressor → indoor heat converter → expansion gear → outdoor heat converter → compressor repeatedly, and the temperature in air conditioning space is brought up to design temperature.
The heating method of air-conditioner of the present invention comprises the stage of heating and defrost phase; In the stage of heating, the indoor fan and the outdoor fan of air-conditioner turn round simultaneously, make indoor heat converter and outdoor heat converter carry out exchange heat with the air of indoor and outdoors respectively, compressor is kept and is heated duty, cross valve is in opening, if indoor electric heater selectivity work lower and need heat fast the time in indoor temperature, moves when can select indoor heat to heat; In defrost phase, indoor fan and outdoor fan are in operating condition, compressor is reversed refrigeration work, make outdoor heat converter be in high temperature, cross valve is in halted state, and outdoor electric heater heats condenser, and the temperature in the time of can stopping to heat according to air-conditioner is simultaneously set the indoor temperature interval, the indoor electric heater is started working when indoor temperature drops to the lower limit temperature of design temperature, and the heat that produces by electric heater makes indoor intensification.The operation interval that can set the indoor electric heater is an indoor design temperature ± 3 ℃, and when indoor actual temperature was lower than in 3 ℃ of design temperatures, the indoor electric heater was started working, and room temperature is raise; When indoor actual temperature was higher than 3 ℃ of design temperatures, the indoor electric heater quit work.
When indoor temperature is increased to the ceiling temperature of design temperature under the effect of indoor electric heater, be that indoor temperature is increased to when being higher than 3 ℃ of design temperatures, the indoor electric heater quits work, and is overheated to prevent indoor temperature, and temperature maintenance is got final product in the scope of design temperature.When the defrost phase of air-conditioner finishes, and change again that the indoor electric heater shuts down equally when heating the stage over to.
Therefore, whether the indoor electric heater is started working or is quit work in the interval of design temperature according to indoor temperature in defrost phase, because the rising of indoor temperature and reduction must be experienced corresponding process, so the indoor electric heater carries out intermittent work according to indoor actual state.
In the heating method of air-conditioner of the present invention, when air-conditioner defrosts, outdoor electric heater heats condenser, the indoor electric heater is started working when indoor temperature drops to the lower limit temperature of design temperature, indoor fan rotates room air is drawn in the air-conditioner, and be brought into the heat that the indoor electric heater produces indoor by the air-flow that indoor fan produces, elevate the temperature, thereby indoor temperature is maintained in the range of set temperature, avoid that indoor temperature descends rapidly because air-conditioner is in when defrosting, the user's is uncomfortable and cause.When indoor temperature was elevated to the ceiling temperature of design temperature, electric heater quit work, thereby reached the purpose of saving the energy.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention with preferred embodiment openly as above, yet, be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, be the content that does not break away from technical solution of the present invention in every case, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all belong in the scope of technical solution of the present invention.
Claims (4)
1. the heating method of an air-conditioner comprises the stage of heating and defrost phase; In the stage of heating, the indoor fan and the outdoor fan of air-conditioner turn round simultaneously, make indoor heat converter and outdoor heat converter carry out exchange heat with the air of indoor and outdoors respectively, and compressor is kept and heated duty, cross valve is in opening, the work of indoor electric heater selectivity; In defrost phase, indoor fan and outdoor fan are in operating condition, and compressor is reversed refrigeration work, and cross valve is in halted state, outdoor electric heater heats condenser, and the indoor electric heater is started working when indoor temperature drops to the lower limit temperature of design temperature.
2. the heating method of air-conditioner according to claim 1, it is characterized in that: when indoor temperature was increased to the ceiling temperature of design temperature under the effect of indoor electric heater, the indoor electric heater quit work.
3. the heating method of air-conditioner according to claim 2 is characterized in that: indoor electric heater intermittent work in defrost phase.
4. the heating method of air-conditioner according to claim 2 is characterized in that: in the defrost phase, the operating temperature interval of indoor electric heater indoor design temperature ± 5 ℃ between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103010153A CN102141282A (en) | 2010-02-01 | 2010-02-01 | Heating method of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103010153A CN102141282A (en) | 2010-02-01 | 2010-02-01 | Heating method of air conditioner |
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| CN102141282A true CN102141282A (en) | 2011-08-03 |
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| CN2010103010153A Pending CN102141282A (en) | 2010-02-01 | 2010-02-01 | Heating method of air conditioner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061651A (en) * | 2013-03-20 | 2014-09-24 | 珠海格力电器股份有限公司 | Multi-unit air conditioner, multi-unit defrosting control system and multi-unit defrosting control method |
| CN104990321A (en) * | 2015-06-30 | 2015-10-21 | 广东美的制冷设备有限公司 | Air conditioner and defrosting method thereof |
| CN106352491A (en) * | 2016-10-08 | 2017-01-25 | 芜湖美智空调设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| CN107202403A (en) * | 2017-06-06 | 2017-09-26 | 青岛海尔空调器有限总公司 | Transducer air conditioning and its control method |
| CN109974203A (en) * | 2019-03-06 | 2019-07-05 | 青岛海信日立空调系统有限公司 | A kind of Defrost method and air conditioner of air conditioner |
| CN110542182A (en) * | 2019-09-12 | 2019-12-06 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner, and storage medium |
| CN113531777A (en) * | 2021-07-07 | 2021-10-22 | 青岛海尔空调器有限总公司 | Defrosting control method and device of air conditioner and air conditioner |
-
2010
- 2010-02-01 CN CN2010103010153A patent/CN102141282A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061651A (en) * | 2013-03-20 | 2014-09-24 | 珠海格力电器股份有限公司 | Multi-unit air conditioner, multi-unit defrosting control system and multi-unit defrosting control method |
| CN104061651B (en) * | 2013-03-20 | 2016-08-03 | 珠海格力电器股份有限公司 | Multi-gang air-conditioner, multi-connected machine defrosting control system and multi-connected machine defrosting control method |
| CN104990321A (en) * | 2015-06-30 | 2015-10-21 | 广东美的制冷设备有限公司 | Air conditioner and defrosting method thereof |
| CN106352491A (en) * | 2016-10-08 | 2017-01-25 | 芜湖美智空调设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| CN107202403A (en) * | 2017-06-06 | 2017-09-26 | 青岛海尔空调器有限总公司 | Transducer air conditioning and its control method |
| CN109974203A (en) * | 2019-03-06 | 2019-07-05 | 青岛海信日立空调系统有限公司 | A kind of Defrost method and air conditioner of air conditioner |
| CN109974203B (en) * | 2019-03-06 | 2021-03-23 | 青岛海信日立空调系统有限公司 | Defrosting method of air conditioner and air conditioner |
| CN110542182A (en) * | 2019-09-12 | 2019-12-06 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner, and storage medium |
| CN113531777A (en) * | 2021-07-07 | 2021-10-22 | 青岛海尔空调器有限总公司 | Defrosting control method and device of air conditioner and air conditioner |
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Application publication date: 20110803 |