CN102980247A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN102980247A CN102980247A CN2012100540532A CN201210054053A CN102980247A CN 102980247 A CN102980247 A CN 102980247A CN 2012100540532 A CN2012100540532 A CN 2012100540532A CN 201210054053 A CN201210054053 A CN 201210054053A CN 102980247 A CN102980247 A CN 102980247A
- Authority
- CN
- China
- Prior art keywords
- temperature
- bypass
- indoor
- compressor
- air conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
-
- 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
- F25B2400/00—General 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
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
-
- 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
- F25B2400/00—General 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
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
-
- 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
- F25B2400/00—General 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
- F25B2400/24—Storage receiver heat
-
- 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
- F25B2600/00—Control issues
- F25B2600/23—Time delays
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
Abstract
The invention provides an air conditioner capable of executing heating operation while user's comfort is maintained. The air conditioner includes an indoor temperature detection means for detecting an indoor temperature, and a target temperature setting means for setting a target temperature, wherein a specified compressor-stop condition that is satisfied when a state that the indoor temperature is higher than the target temperature by a specified temperature difference has lasted for a specified duration time is previously set, and wherein after the indoor temperature has exceeded the target temperature and when the specified compressor-stop condition is satisfied, the compressor is stopped. The air conditioner further includes a bypass circuit for connecting one point between the indoor heat exchanger and the pressure reducer with another point between the four-way valve and an inlet port of the compressor, and a bypass-use two-way valve provided in the bypass circuit. After the indoor temperature has exceeded the target temperature and before the specified compressor-stop condition is satisfied, the bypass-use two-way valve is opened. Thus, the likelihood that the compressor may be stopped and the air conditioning may be stopped is lowered, so that the indoor user's comfort can be maintained.
Description
Technical field
The present invention relates to improve the air conditioner of user's comfortableness.
Background technology
The air conditioner of prior art adopts in warming operation, makes compressor stop (thermal cutoff, thermo off) when indoor temperature is stablized, and carries out the structure (for example with reference to patent documentation 1) of the low control of power consumption.
The prior art document
Patent documentation
The special document 1 that gets: Japanese kokai publication hei 6-249542 communique
Summary of the invention
The problem that invention will solve
But because when compressor shuts down, room air is regulated and is also stopped, so may damage the comfortableness that is positioned at indoor user.
So, the object of the present invention is to provide a kind of comfortableness ground that can keep indoor user to carry out the air conditioner of warming operation.
Be used for solving the method for problem
In order to address the above problem, according to a mode of the present invention, a kind of air conditioner is provided, it comprises: kind of refrigeration cycle (mechanism), it comprises compressor, cross valve, indoor heat converter, decompressor and outdoor heat converter, when warming operation, refrigerant is with the sequential flowing of above-mentioned compressor, above-mentioned cross valve, above-mentioned indoor heat converter, above-mentioned decompressor, above-mentioned outdoor heat converter, above-mentioned cross valve, above-mentioned compressor; Detect the indoor temperature detecting unit of indoor temperature; Target temperature setup unit with the target setting temperature, preset the stop condition of the compressor of the regulation of setting up during than duration of the state continuance of the temperature difference of the high regulation of target temperature regulation when indoor temperature, after indoor temperature surpasses above-mentioned target temperature, stop above-mentioned compressor when the stop condition of the compressor of afore mentioned rules is set up, this air conditioner also comprises: between above-mentioned indoor heat converter and the above-mentioned decompressor and the bypass (bypass circulation) that is connected between the suction inlet of above-mentioned cross valve and above-mentioned compressor; With the bypass two-port valve that is arranged at above-mentioned bypass, after indoor temperature surpasses above-mentioned target temperature, before the stop condition of the compressor of afore mentioned rules is set up, open above-mentioned bypass two-port valve.
The invention effect
According to the present invention, can provide the comfortableness ground that to keep indoor user to carry out the air conditioner of warming operation.
Description of drawings
Fig. 1 is the Sketch figure of kind of refrigeration cycle of the air conditioner of embodiments of the present invention 1.
Fig. 2 is the flow chart that is used for being transitioned into the control of thermal cutoff operational delay of embodiment 1.
Fig. 3 is the flow chart of the thermal cutoff operational delay control of embodiment 1.
Fig. 4 is the Sketch figure of kind of refrigeration cycle of the air conditioner of embodiments of the present invention 2.
Fig. 5 is the flow chart that is used for being transitioned into the control of thermal cutoff operational delay of embodiment 2.
Reference numeral
1 indoor set
2 off-premises stations
5 indoor heat converters
9 outdoor heat converters
11 compressors
13 decompressors
16 bypasses
17 bypass two-port valves
18 thermal storage units
19 heat-storing materials
20 heat-storage heat exchangers
21 defrosting bypasses
22 defrosting two-port valves
The specific embodiment
The air conditioner of the first invention comprises: kind of refrigeration cycle, it comprises compressor, cross valve, indoor heat converter, decompressor and outdoor heat converter, when warming operation, refrigerant is with the sequential flowing of above-mentioned compressor, above-mentioned cross valve, above-mentioned indoor heat converter, above-mentioned decompressor, above-mentioned outdoor heat converter, above-mentioned cross valve, above-mentioned compressor; Detect the indoor temperature detecting unit of indoor temperature; Target temperature setup unit with the target setting temperature, preset the stop condition of the compressor of the regulation of setting up during than duration of the state continuance of the temperature difference of the high regulation of target temperature regulation when indoor temperature, after indoor temperature surpasses above-mentioned target temperature, stop above-mentioned compressor when the stop condition of the compressor of afore mentioned rules is set up, this air conditioner also comprises: between above-mentioned indoor heat converter and the above-mentioned decompressor and the bypass that is connected between the suction inlet of above-mentioned cross valve and above-mentioned compressor; With the bypass two-port valve that is arranged at above-mentioned bypass, after indoor temperature surpasses above-mentioned target temperature, before the stop condition of the compressor of afore mentioned rules is set up, open above-mentioned bypass two-port valve.Thus, after indoor temperature surpassed target temperature, the pressure drop of the refrigerant that goes from compressor to indoor heat converter can make the drop in temperature of indoor heat converter.Consequently, the stop condition of the compressor of regulation is difficult to set up, and namely the possibility that stops of compressor descends, and can keep the comfortableness of indoor user.
The air conditioner of the second invention particularly in the air conditioner of the first invention, also has thermal storage unit, and it is arranged at above-mentioned bypass, and the heat that above-mentioned compressor is discharged is passed to refrigerant.Thus, can continue to carry out warming operation on the reliable rand running limit of defrosting, and in the low situation of the possibility of carrying out attached frost running, carry out the control of thermal cutoff operational delay.Can keep thus user's comfortableness ground and carry out warming operation.
The air conditioner of the 3rd invention particularly also comprises in the air conditioner of the second invention: the defrosting bypass, its be used for making the refrigerant of discharging from the outlet of above-mentioned compressor and flow through above-mentioned decompressor and above-mentioned outdoor heat converter between refrigerant conflux; With the defrosting two-port valve that is arranged at above-mentioned defrosting bypass, when the defrosting running that above-mentioned outdoor heat converter is defrosted, continue to carry out warming operation, and open above-mentioned defrosting two-port valve and above-mentioned bypass two-port valve.Thus, even when the defrosting running, also can continue to carry out warming operation.
Particularly in the air conditioner of the second invention or the 3rd invention, above-mentioned thermal storage unit comprises the air conditioner of the 4th invention: the heat-storing material that the heat that above-mentioned compressor is discharged is accumulated; Be passed to the heat-storage heat exchanger of the refrigerant that flows through above-mentioned bypass with the heat with above-mentioned heat-storing material, this air conditioner also has the heat-storing material temperature detecting unit of the temperature that detects above-mentioned heat-storing material, in the temperature of above-mentioned heat-storing material during less than the heat-storing material temperature of regulation, keep and close above-mentioned bypass with the state of two-port valve.The temperature that can suppress thus indoor heat converter extremely descends.
The air conditioner of the 5th invention particularly in the second invention to the air conditioner of the 4th invention, finish from defrosting running to through regulation do not implement during the defrosting till, keep and close above-mentioned bypass with the state of two-port valve.Thus, in the high situation of the possibility of carrying out the defrosting running, can suppress to cause to carry out the situation of the drop in temperature of the heat-storing material defrosting running, that caused by the refrigerant that flows through bypass.Consequently, can continue to carry out the execution defrosting running of warming operation limit in the limit.
The air conditioner of the 6th invention is particularly invented to the air conditioner of the 5th invention second, also has the extraneous gas temperature testing organization that detects the extraneous gas temperature, in the situation of the detected extraneous gas temperature of said external gas temperature testing agency less than the extraneous gas temperature of regulation, keep the state that above-mentioned bypass is used two-port valve of closing.Thus, in the high situation of the possibility of carrying out the defrosting running, the decline of the heat-storing material temperature that can suppress to cause this defrosting to be turned round and can not carry out, be caused by the refrigerant that flows through bypass.Consequently, can continue to carry out the execution defrosting running of warming operation limit in the limit.
The air conditioner of the 7th invention is particularly invented to the air conditioner of the 6th invention second, the outdoor heat converter temperature testing organization that also has the temperature that detects above-mentioned outdoor heat converter, in the situation of temperature less than the outdoor heat converter temperature of regulation of above-mentioned outdoor heat converter, keep the state that above-mentioned bypass is used two-port valve of closing.Thus, in the high situation of the possibility of carrying out the defrosting running, the decline of the heat-storing material temperature that can suppress to cause this defrosting to be turned round and can not carry out, be caused by the refrigerant that flows through bypass.Consequently, can continue to carry out the execution defrosting running of warming operation limit in the limit.
The air conditioner of the 8th invention is particularly invented to the air conditioner of the 7th invention first, after indoor temperature surpasses above-mentioned target temperature, when from open above-mentioned bypass with two-port valve through the regulation duration of valve opening the time, close above-mentioned bypass two-port valve.Thus, can avoid the pressure differential of the refrigerant in the refrigerant of upstream side and downstream to disappear and cause warming operation to proceed.
The air conditioner of the 9th invention particularly in the air conditioner of the 8th invention, after indoor temperature surpasses above-mentioned target temperature, repeatedly carries out the switching that above-mentioned bypass is used two-port valve repeatedly.Thus, can suppress the drop in temperature of the extreme of indoor heat converter, and can make the stop condition of the compressor of regulation be difficult to set up.
The air conditioner of the tenth invention particularly in the air conditioner of the 9th invention, has been set the upper limit to above-mentioned bypass with the switching number of times of two-port valve.Thus, can suppress the fall of the temperature of indoor heat converter less, and can suppress the drop in temperature of the extreme of indoor heat converter.
The air conditioner of the 11 invention is particularly invented to the air conditioner of the tenth invention first, the indoor heat converter temperature testing organization that also has the temperature that detects above-mentioned indoor heat converter, in the situation of temperature less than the indoor heat converter temperature of regulation of above-mentioned indoor heat converter, close above-mentioned bypass two-port valve.Thus, can more than certain temperature, carry out room air and regulate, avoid damaging the comfortableness of indoor user.
The air conditioner of the 12 invention particularly in the first invention to the air conditioner of the 11 invention, from close above-mentioned bypass with two-port valve till the closing valve time through regulation, keep and close above-mentioned bypass with the state of two-port valve.Thus, can suppress repeatedly to carry out continually bypass with the switching of two-port valve, consequently, can avoid bypass to reduce too early with the life-span of two-port valve.
Referring to the description of drawings embodiments of the present invention.In addition, the present invention is not limited to this embodiment.
(embodiment 1)
Fig. 1 is the Sketch figure of kind of refrigeration cycle of the air conditioner of present embodiment 1.
The air conditioner of present embodiment comprises: be arranged at indoor indoor set 1; Be arranged at outdoor off-premises station 2; With the refrigerant pipe arrangement 3 that is connected indoor set 1 and off-premises station 2.
Off-premises station 2 comprises: the outdoor heat converter 9 that carries out heat exchange between outdoor air and refrigerant; For the heat exchange of the air and the refrigerant that promote to utilize outdoor heat converter 9, with the outdoor fan 10 of air to outdoor heat converter 9 air-supplies; Compression refrigerant and discharge the compressor 11 of the refrigerant of high-temperature gas shape; Switch the cross valve 12 of the flow direction of refrigerant; The decompressor 13 that refrigerant is reduced pressure; Temperature sensor 14 as the outdoor heat converter temperature testing organization of the temperature of sensing chamber's outer heat-exchanger 9; With the temperature sensor 15 as the extraneous gas temperature testing organization that detects the extraneous gas temperature.
The kind of refrigeration cycle of air conditioner comprises: compressor 11, cross valve 12, indoor heat converter 5, decompressor 13 and outdoor heat converter 9.
For blowdown firing the time, refrigerant is with the sequential flowing of compressor 11, cross valve 12, outdoor heat converter 9, decompressor 13, indoor heat converter 5, cross valve 12, compressor 11.On the other hand, when warming operation, refrigerant is with the sequential flowing of compressor 11, cross valve 12, indoor heat converter 5, decompressor 13, outdoor heat converter 9, cross valve 12, compressor 11.Kind of refrigeration cycle when in addition, Fig. 2 represents warming operation.
And, between decompressor 13 and the indoor heat converter 5 and the bypass 16 that is connected between the suction inlet of cross valve 12 and compressor 11, be arranged at off-premises station 2.Be provided with the bypass two-port valve 17 that opens and closes bypass 16 at this bypass 16.
In addition, air conditioner has the remote control (not shown) that turns round and indicate to indoor set 1.Utilize remote control, can set confession blowdown firing or the indication of warming operation, indoor design temperature (target temperature).In common air conditioning running, carry out the air conditioning running so that indoor temperature becomes indoor design temperature.
Air conditioner constitutes, in warming operation, after surpassing the indoor design temperature of being set by remote control by temperature sensor 7 detected indoor temperatures, when the stop condition of the compressor of stipulating is set up, stop the running (hereinafter referred to as " thermal cutoff running ") of compressor 11.Namely by the stopping of compressor 11, can suppress the power consumption of air conditioner by this thermal cutoff running.
The compressor stop condition of the predefined regulation that is used for making thermal cutoff running beginning is described herein.In the situation of present embodiment 1, in warming operation, during than duration (for example 3 minutes) of the state continuance regulation of the temperature difference (for example 3 ℃) of the high regulation of indoor design temperature, the stop condition of the compressor of regulation is set up in indoor temperature, and compressor 11 stops.In addition, the stop condition of compressor 11 so long as be used for stops compressor 11 under the stable state of indoor temperature condition get final product, except the duration of the temperature of afore mentioned rules, regulation, also can add other conditions such as time that begin from running.
But when carrying out the thermal cutoff running, namely when stopping compressor 11, room air is regulated and is also stopped, so can be detrimental to the comfortableness of indoor user.
In addition, when again beginning the running of compressor 11 after carrying out the thermal cutoff running, compressor 11 is with the high state running of operating frequency, until kind of refrigeration cycle is stable.At this moment, compressor 11 is restarted employed power consumption and is higher than by the thermal cutoff repressed electric power amount that turns round.Therefore, although utilize the thermal cutoff running can reduce the power consumption of air conditioner, the result causes the increase of power consumption.
So, the air conditioner of present embodiment 1 constitutes, before the condition of carrying out the thermal cutoff running is set up, specifically after indoor temperature surpasses indoor design temperature, and before the stop condition of the compressor 11 of stipulating is set up, make the suction inlet (hereinafter referred to as " control of thermal cutoff operational delay ") that flows into compressors 11 by the aqueous refrigerant of the high pressure of indoor heat converter 5 via bypass 16.By the control of this thermal cutoff operational delay, the pressure drop of the refrigerant gas that goes from compressor 11 outputs and to indoor heat converter 5, the as a result drop in temperature of indoor heat converter 5.When the drop in temperature of indoor heat converter 5, utilize Air Blast fan 6 also to descend to the temperature of the air of indoor air-supply, the stop condition of the compressor of afore mentioned rules is difficult to set up, i.e. and the beginning of thermal cutoff running is delayed.
Then, illustrate to the transition of thermal cutoff operational delay control.Fig. 2 is be used to the flow chart that is transitioned into the control of thermal cutoff operational delay.
At first, judge in step 21 whether compressor 11 is in the running (ON or OFF, conducting still disconnects).Enter step 22 in the situation in compressor 11 runnings, in the situation that compressor 11 shuts down, get back to beginning.
Then, in step 22, judge whether the condition of the thermal cutoff operational delay control of carrying out compressor 11 is set up.The condition of carrying out the control of thermal cutoff operational delay is than the more loose condition of condition (stop condition of the compressor of regulation) of carrying out the thermal cutoff running, is the condition that must set up before the condition of carrying out the thermal cutoff running is set up.
In the situation of present embodiment 1, in warming operation, carry out the condition (stop condition of the compressor of regulation) of thermal cutoff running, set up in the situation of first duration of state continuance (for example 3 minutes) of indoor temperature high first temperature difference (for example 3 ℃) than indoor design temperature, compressor 11 shuts down.On the other hand, carry out the condition of thermal cutoff operational delay control, in the situation of second duration of state continuance (for example 2 minutes) of indoor temperature high second temperature difference (for example 2 ℃) than indoor design temperature, set up.In addition, the first temperature difference is greater than the second temperature difference, and first lasted longer than for the second duration, but was not limited thereto.Also can set the first temperature difference less than the second temperature difference, perhaps the first duration be set shortlyer than the second duration.That is, as long as before the condition of carrying out the thermal cutoff running is set up, the condition of carrying out the control of thermal cutoff operational delay must be set up get final product.
In step 22, be judged as in the situation of the condition establishment of carrying out the control of thermal cutoff operational delay, enter step 23.On the other hand, in the invalid situation of condition of carrying out the control of thermal cutoff operational delay, get back to step 21.
Then, in step 23, judge whether the temperature of indoor heat converter 5 is more than the indoor heat converter temperature of regulation.The reason that this step 23 is set is, when refrigerant flow through bypass 16 under the lower state of the temperature of indoor heat converter 5, the possibility that exists the temperature of indoor heat converter 5 extremely to descend can be detrimental to the comfortableness of indoor user thus.Enter step 24 in the temperature of indoor heat converter 5 in for the situation more than the indoor heat converter temperature of regulation.In the situation of temperature less than the indoor heat converter temperature of regulation of indoor heat converter 5, get back to step 21.
Then, in step 24, judge whether close bypass from the last time has passed through the shut-in time of stipulating with two-port valve 17.By this step S24, can avoid causing bypass to reach capacity prematurely with the switching number of times of two-port valve 17 with the switching of two-port valve 17 opening and closing number of times (life-span decline) because repeatedly carrying out continually bypass.
From on once bypass close with two-port valve 17 through in the situation of shut-in time (for example 20 minutes) of regulation, enter step 25, carry out the control of thermal cutoff operational delay.On the other hand, in the situation of the shut-in time of not passing through regulation, get back to step 21.
Based on above step, carry out the control of thermal cutoff operational delay.The detailed content of thermal cutoff operational delay control then is described.Fig. 3 is the flow chart of thermal cutoff operational delay control.
At first, in step 31, bypass is opened with two-port valve 17.The aqueous refrigerant of high pressure flows into the suction inlet of compressors 11 via bypass 16 thus, thus from the pressure drop of the refrigerant gas of compressor 11 outputs, and the drop in temperature of indoor heat converter 5 as a result.Therefore, the temperature difference of indoor temperature and indoor design temperature diminishes, and the condition (stop condition of the compressor of regulation) of carrying out the thermal cutoff running is difficult to set up.Consequently, carry out the thermal cutoff running (stop compressor 11 and stop empty in air conditioning) possibility reduce, can keep user's comfortableness.And, can avoid the increase of the power consumption that causes because of restarting of compressor 11.
But when bypass was kept open mode with two-port valve 17, the pressure differential of the refrigerant of upstream side and the refrigerant in downstream disappeared, and warming operation can not be proceeded.So, in step 32, judge the duration of valve opening (for example 5 seconds) that from bypass is opened with two-port valve 17, whether has passed through regulation.In the situation of the duration of valve opening that has passed through regulation, enter step 33.In the situation of the duration of valve opening that does not pass through regulation, get back to step 31.
Then, in step 33, close bypass two-port valve 17.Then in step 34, judge whether through the closing valve time (for example 20 seconds) of regulation.In the situation of the closing valve time that has passed through regulation, enter step 35, in the situation of the closing valve time that does not pass through regulation, get back to step 33.In addition, by the duration of valve opening of regulation being set shorter than the closing valve time of regulation, the extreme drop in temperature of indoor heat converter 5 can be suppressed, the comfortableness of indoor user can be kept thus.
Then, in step 35, judge whether bypass reaches higher limit with the switching number of times of two-port valve 17.Will from open bypass with two-port valve 17 to closing as a circulation, the execution number of times of this circulation is preseted higher limit, can suppress thus bypass is surpassed with two-port valve 17 switching of the too much number of times of higher limit.Thus, can guarantee the bypass reliability of two-port valve 17.Further, can suppress the amplitude of the drop in temperature of indoor heat converter 5 less, and the extreme that can suppress the temperature of indoor heat converter 5 descends, the result can keep the comfortableness of indoor user.Reach in the situation of higher limit at the switching number of times of bypass with two-port valve 17, finish the control of thermal cutoff operational delay.Enter step 36 opening and closing number of times and do not reach in the situation of higher limit.
In step 36, judge whether the temperature of indoor heat converter 5 is more than the indoor heat converter temperature of regulation.The reason that this step 36 is set is identical with the reason of setting steps 23.When refrigerant flow through bypass 16 under the lower state of the temperature of indoor heat converter 5, there was the possibility of the comfortableness of infringement indoor user thus in the possibility that exists the temperature of indoor heat converter 5 extremely to descend.
In addition, the indoor heat converter temperature of this regulation is set according to the indoor design temperature of being set by remote control.In addition, the indoor heat converter temperature of regulation, according to the difference of the structure of kind of refrigeration cycle, can with the accordingly unique decision of indoor design temperature, also can not be the value of unique decision.For example, the indoor heat converter temperature of the regulation among the indoor heat converter temperature of the regulation in the step 23 shown in Figure 2 and the step S36 shown in Figure 3, the difference according to the structure of kind of refrigeration cycle can be the same or different.
In step 36, be judged as the indoor heat converter temperature and be in the situation more than the indoor heat converter temperature of regulation, get back to step 31, proceed the control of thermal cutoff operational delay.On the other hand, in the situation of indoor heat converter temperature less than the indoor heat converter temperature of regulation, finish the control of thermal cutoff operational delay.
As mentioned above, according to present embodiment 1, when warming operation, by in bypass 16, flowing through refrigerant, make the drop in temperature of indoor heat converter 5, the execution of turning round as the thermal cutoff of the running that stops compressor 11 is postponed.Consequently, warming operation is carried out on the comfortableness ground that can keep indoor user.In addition because compressor 11 stop to be delayed, so can prevent the power consumption that causes because of restarting of compressor 11.
(embodiment 2)
Fig. 4 is the Sketch figure of kind of refrigeration cycle of the air conditioner of embodiment 2.The symbol identical to the inscape mark identical with embodiment 1 and embodiment 1.In addition, omit the explanation of the inscape identical with embodiment 1.Present embodiment 2 is that with the difference of embodiment 1 air conditioner of present embodiment 2 has thermal storage unit 18 and defrosting bypass 21.
In addition, be provided with heat-storage heat exchanger 20 at heat-storing material 19 (heat storage container).Carry out heat exchange between the refrigerant that in the refrigerant tube of the inside that is arranged at heat-storage heat exchanger, flows and the heat-storing material 19.The aqueous refrigerant of heat-storing material 19 and the high pressure that flows through bypass 16 and go to the suction inlet of compressor 11 carries out heat exchange.In addition, be provided with temperature sensor 23 as the heat-storing material temperature testing organization of the temperature that detects heat-storing material 19.
In addition, be provided with defrosting bypass 21, its be used for making the refrigerant of discharging from the outlet of compressor 11 and flow through decompressor 13 and outdoor heat converter 9 between refrigerant conflux.Be provided with defrosting two-port valve 22 at defrosting bypass 21.When opening defrosting two-port valve 22, refrigerant flows through defrosting bypass 21.
The defrosting running of the air conditioner that consists of in the above described manner is described.The kind of refrigeration cycle of the air conditioner of embodiment 2 can continue to carry out the enforcement defrosting running of warming operation limit in the limit.
At first, when the temperature by temperature sensor 14 detected outdoor heat converters is the temperature of conduct defrosting running beginning condition, begin the defrosting running.In addition, the condition of defrosting running beginning is not limited thereto.For example, the temperature that also can consider to append extraneous gas temperature, outdoor heat converter is lower than the conditions such as situation of time remaining stipulated time of the temperature of defrosting running beginning condition.The temperature of the refrigerant tube that in addition, the temperature detection of outdoor heat converter 9 also can be by sensing chamber's outer heat-exchanger 9 is carried out.
When defrosting running beginning condition is set up, open defrosting two-port valve 22 and bypass two-port valve 17, decompressor 13 is controlled in suitable aperture.Thus, can continue to carry out the execution defrosting running of warming operation limit in the limit.
The defrosting that this limit continues to carry out carrying out on the warming operation limit is turned round, and the state of both opening with two-port valve 17 with defrosting two-port valve 22 and bypass carries out.At this moment, when bypass is opened first than defrosting two-port valve 22 with two-port valve 17, put aside heat in heat-storing material 19 be wasted (not being used in defrosting).When defrosting two-port valve 22 and bypass when both open simultaneously with two-port valve 17, flow and refrigerant by outdoor heat converter 9 and flow and refrigerant by bypass 16 is inhaled into compressor 11 simultaneously from indoor heat converter 5 from defrosting bypass 21.Thus, may cause the pressure oscillation of refrigerant.Therefore, by from opening defrosting two-port valve 22, opening bypass after through appropriate time with two-port valve 17, can suppress as much as possible pressure oscillation.Therefore, in the situation of present embodiment 2, defrosting two-port valve 22 is opened first with two-port valve 17 than bypass.
The transition to the control of thermal cutoff operational delay of present embodiment 2 then, is described.Fig. 5 is the flow chart when transitting to the control of thermal cutoff operational delay.
At first, step 51～step 54 is contents identical with step 21 shown in Figure 2～step 24, so description thereof is omitted.But, in the step 54 of present embodiment 2, judge from once close bypass and with two-port valve 17, in the situation through shut-in time of stipulating, enter step 55.
Then, in step 55, judge whether the temperature of heat-storing material 19 is more than the heat-storing material temperature (for example 80 ℃) of regulation.The temperature of heat-storing material 19 is higher, and the drop in temperature amplitude of the indoor heat converter 5 after bypass is opened with two-port valve 17 is less, more is difficult to damage the comfortableness of indoor user.On the other hand, the temperature of heat-storing material 19 is lower, and the drop in temperature amplitude of the indoor heat converter 5 after bypass is opened with two-port valve 17 is larger, more might damage the comfortableness of indoor user.Therefore, not in the situation more than the heat-storing material temperature of regulation in the temperature of heat-storing material, if open bypass with two-port valve 17 (that is, if carry out the thermal cutoff operational delay control of step 59 described later), then more likely damage user's comfortableness.
Therefore, the temperature of heat-storing material 19 for the situation more than the heat-storing material temperature of regulation under, enter step 56.On the other hand, in the situation of temperature less than the heat-storing material temperature of regulation of heat-storing material 19, get back to step 51.
Then, in step 56, judge from last time defrosting running finishes, whether to have passed through not implementing during the defrosting of stipulating.In case carry out the defrosting running, the possibility of then repeatedly carrying out the defrosting running is high.So, if before carrying out next time defrosting running, open bypass makes heat-storing material 19 with two-port valve 17 drop in temperature, then can not carry out the execution defrosting running of warming operation limit in the limit, there is the possibility of infringement user's comfortableness.
Thus, in step 56, judge from last time defrosting running finishes, whether to have passed through not the implementing of regulation (for example 1 hour) during the defrosting.From on once defrosting running finishes through entering step 57 in the situation during defrosting do not implemented of regulation.On the other hand, from do not get back to step 51 in the situation during defrosting do not implemented through regulation once defrosting running finishes.
Then, in step 57, judge whether the temperature of outdoor heat converter 9 is more than the outdoor heat converter temperature of regulation.When opening bypass with two-port valve 17 (, when carrying out the thermal cutoff operational delay control of step 59 described later), the drop in temperature of heat-storing material 19, existence can not be carried out the possibility that the defrosting running is carried out on the warming operation limit in the limit.Therefore, in the situation of temperature less than the outdoor heat converter temperature of regulation of outdoor heat converter 9, namely in the situation of the temperature of the outdoor heat converter 9 that might carry out defrosting running, the inhibition bypass is opened with two-port valve 17, prepares to make it possible to the limit and carries out the execution defrosting running of warming operation limit.Therefore, enter step 58 in the temperature of outdoor heat converter 9 in for the situation more than the outdoor heat converter temperature of regulation.In the situation less than the outdoor heat converter temperature of stipulating, get back to step 51.
Then, in step 58, judge that whether the extraneous gas temperature is more than the extraneous gas temperature (for example-1 ℃) of regulation.When opening bypass with two-port valve 17 (, when carrying out the thermal cutoff operational delay control of step 59 described later), the drop in temperature of heat-storing material 19, existence can not be carried out the possibility that the defrosting running is carried out on the warming operation limit in the limit.Therefore, externally in the situation of gas temperature less than the extraneous gas temperature of regulation, namely in the situation of the extraneous gas temperature that might carry out the defrosting running, the inhibition bypass is opened with two-port valve 17, prepares to make it possible to the limit and carries out the execution defrosting running of warming operation limit.Therefore, externally gas temperature enters step 59 and carries out the control of thermal cutoff operational delay in the situation more than the extraneous gas temperature of regulation.On the other hand, externally get back to step 51 in the situation of gas temperature less than the extraneous gas temperature of regulation.
In addition, the thermal cutoff operational delay of step 59 is controlled with the thermal cutoff operational delay of embodiment 1 shown in Figure 3 and is controlled to be identical content, so description thereof is omitted.
According to present embodiment 2, can continue to carry out warming operation on the reliable rand running limit of defrosting, and, in the low situation of the possibility of carrying out the defrosting running, carry out the control of thermal cutoff operational delay.Thus, can keep user's comfortableness ground and carry out warming operation.
In addition, the temperature of enumerating as an example in the above description, the numerical value of time and non-limiting can suitably change.
Utilizability on the industry
As mentioned above, the present invention not only can be applied to the common air conditioner that carries out four-way valve defrosting, can also be applied to the limit and continue to carry out the air conditioner that defrosts and turn round in the warming operation limit.
Claims (12)
1. an air conditioner is characterized in that, comprising:
Kind of refrigeration cycle, it comprises compressor, cross valve, indoor heat converter, decompressor and outdoor heat converter, when warming operation, refrigerant is with the sequential flowing of described compressor, described cross valve, described indoor heat converter, described decompressor, described outdoor heat converter, described cross valve, described compressor;
Detect the indoor temperature detecting unit of indoor temperature; With
The target temperature setup unit of target setting temperature,
Preset the stop condition of the compressor of the regulation of setting up during than duration of the state continuance of the temperature difference of the high regulation of target temperature regulation when indoor temperature, after indoor temperature surpasses described target temperature, when setting up, the stop condition of the compressor of described regulation stops described compressor
This air conditioner also comprises:
To between described indoor heat converter and the described decompressor and the bypass that is connected between the suction inlet of described cross valve and described compressor; With
Be arranged at the bypass two-port valve of described bypass,
After indoor temperature surpasses described target temperature, before the stop condition of the compressor of described regulation is set up, open described bypass two-port valve.
2. air conditioner as claimed in claim 1 is characterized in that:
Also have thermal storage unit, it is arranged at described bypass, and the heat that described compressor is discharged is passed to refrigerant.
3. air conditioner as claimed in claim 2 is characterized in that, also comprises:
The defrosting bypass, its be used for making the refrigerant of discharging from the outlet of described compressor and flow through described decompressor and described outdoor heat converter between refrigerant conflux;
With the defrosting two-port valve that is arranged at described defrosting bypass,
When the defrosting running that described outdoor heat converter is defrosted, continue to carry out warming operation, and open described defrosting two-port valve and described bypass two-port valve.
4. air conditioner as claimed in claim 2 or claim 3 is characterized in that:
Described thermal storage unit comprises: the heat-storing material that the heat that described compressor is discharged is accumulated; Be passed to the heat-storage heat exchanger of the refrigerant that flows through described bypass with the heat with described heat-storing material,
This air conditioner also has the heat-storing material temperature detecting unit of the temperature that detects described heat-storing material,
In the temperature of described heat-storing material during less than the heat-storing material temperature of regulation, keep and close described bypass with the state of two-port valve.
5. such as each described air conditioner in the claim 2～4, it is characterized in that:
Finish from defrosting running to through regulation do not implement during the defrosting till, keep and close described bypass with the state of two-port valve.
6. such as each described air conditioner in the claim 2～5, it is characterized in that:
Also have the extraneous gas temperature testing organization that detects the extraneous gas temperature,
In the situation of the detected extraneous gas temperature of described extraneous gas temperature testing organization less than the extraneous gas temperature of regulation, keep the state that described bypass is used two-port valve of closing.
7. such as each described air conditioner in the claim 2～6, it is characterized in that:
The outdoor heat converter temperature testing organization that also has the temperature that detects described outdoor heat converter,
In the situation of temperature less than the outdoor heat converter temperature of regulation of described outdoor heat converter, keep the state that described bypass is used two-port valve of closing.
8. such as each described air conditioner in the claim 1～7, it is characterized in that:
After indoor temperature surpasses described target temperature, when with two-port valve, during through the duration of valve opening of regulation, closing described bypass two-port valve from opening described bypass.
9. air conditioner as claimed in claim 8 is characterized in that:
After indoor temperature surpasses described target temperature, repeatedly repeatedly carry out the switching that described bypass is used two-port valve.
10. air conditioner as claimed in claim 9 is characterized in that:
Described bypass has been set the upper limit with the switching number of times of two-port valve.
11. such as each described air conditioner in the claim 1～10, it is characterized in that:
The indoor heat converter temperature testing organization that also has the temperature that detects described indoor heat converter,
In the situation of temperature less than the indoor heat converter temperature of regulation of described indoor heat converter, close described bypass two-port valve.
12. such as each described air conditioner in the claim 1～11, it is characterized in that:
From close described bypass with two-port valve till the closing valve time through regulation, keep and close described bypass with the state of two-port valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011192671A JP5375904B2 (en) | 2011-09-05 | 2011-09-05 | Air conditioner |
| JP2011-192671 | 2011-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102980247A true CN102980247A (en) | 2013-03-20 |
| CN102980247B CN102980247B (en) | 2016-12-14 |
Family
ID=45808227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210054053.2A Active CN102980247B (en) | 2011-09-05 | 2012-03-02 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2565559B1 (en) |
| JP (1) | JP5375904B2 (en) |
| CN (1) | CN102980247B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654459A (en) * | 2013-11-21 | 2015-05-27 | 三菱电机株式会社 | Air-conditioning apparatus |
| US20210323378A1 (en) * | 2018-11-13 | 2021-10-21 | Nok Corporation | Heat management system |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482378A (en) * | 2016-10-19 | 2017-03-08 | 广东美的制冷设备有限公司 | Air conditioning system and its control method |
| CN106482303B (en) * | 2016-11-25 | 2022-05-17 | 广州华凌制冷设备有限公司 | Air conditioner and refrigeration control method thereof |
| CN109945431B (en) * | 2019-03-20 | 2020-11-24 | 珠海格力电器股份有限公司 | Temperature adjusting method, device and system and air conditioner |
| JP7417368B2 (en) * | 2019-05-27 | 2024-01-18 | シャープ株式会社 | air conditioner |
| CN110470017A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN111351248B (en) * | 2020-03-13 | 2021-10-08 | 海信（山东）空调有限公司 | Air conditioning system and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020055644A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | System for controlling an air conditioning system |
| CN2861868Y (en) * | 2005-11-30 | 2007-01-24 | 东莞市广大制冷有限公司 | Air conditioner having unloading device |
| JP2007271181A (en) * | 2006-03-31 | 2007-10-18 | Fujitsu General Ltd | Air conditioner |
| JP2009014215A (en) * | 2007-07-02 | 2009-01-22 | Panasonic Corp | Air conditioning device |
| JP2011153736A (en) * | 2010-01-26 | 2011-08-11 | Panasonic Corp | Refrigerating cycle device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650197B2 (en) * | 1987-12-11 | 1994-06-29 | ダイキン工業株式会社 | Refrigerator control device |
| JP3331620B2 (en) * | 1992-05-11 | 2002-10-07 | ダイキン工業株式会社 | Operation control device for air conditioner |
| JP2833937B2 (en) * | 1992-09-04 | 1998-12-09 | 三菱電機株式会社 | Thermal storage air conditioning system |
| JPH06249542A (en) | 1993-02-23 | 1994-09-06 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| JP2932922B2 (en) * | 1993-12-28 | 1999-08-09 | 三菱電機株式会社 | Refrigeration / air conditioning system |
| JP2001280669A (en) * | 2000-03-30 | 2001-10-10 | Mitsubishi Electric Corp | Refrigerating cycle device |
| JP4475655B2 (en) * | 2005-06-16 | 2010-06-09 | 日立アプライアンス株式会社 | Air conditioner |
| JP4793328B2 (en) * | 2007-06-08 | 2011-10-12 | 三菱電機株式会社 | Heat pump equipment |
| US8151583B2 (en) * | 2007-08-01 | 2012-04-10 | Trane International Inc. | Expansion valve control system and method for air conditioning apparatus |
| JP2009236415A (en) * | 2008-03-27 | 2009-10-15 | Mitsubishi Electric Corp | Air-conditioning system |
| JP2008164287A (en) * | 2008-03-28 | 2008-07-17 | Sanyo Electric Co Ltd | Refrigerating device |
-
2011
- 2011-09-05 JP JP2011192671A patent/JP5375904B2/en active Active
-
2012
- 2012-03-01 EP EP12157794.4A patent/EP2565559B1/en active Active
- 2012-03-02 CN CN201210054053.2A patent/CN102980247B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020055644A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | System for controlling an air conditioning system |
| CN2861868Y (en) * | 2005-11-30 | 2007-01-24 | 东莞市广大制冷有限公司 | Air conditioner having unloading device |
| JP2007271181A (en) * | 2006-03-31 | 2007-10-18 | Fujitsu General Ltd | Air conditioner |
| JP2009014215A (en) * | 2007-07-02 | 2009-01-22 | Panasonic Corp | Air conditioning device |
| JP2011153736A (en) * | 2010-01-26 | 2011-08-11 | Panasonic Corp | Refrigerating cycle device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654459A (en) * | 2013-11-21 | 2015-05-27 | 三菱电机株式会社 | Air-conditioning apparatus |
| CN104654459B (en) * | 2013-11-21 | 2017-10-10 | 三菱电机株式会社 | Air conditioner |
| US20210323378A1 (en) * | 2018-11-13 | 2021-10-21 | Nok Corporation | Heat management system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2565559A2 (en) | 2013-03-06 |
| JP2013053818A (en) | 2013-03-21 |
| EP2565559A3 (en) | 2015-02-18 |
| CN102980247B (en) | 2016-12-14 |
| EP2565559B1 (en) | 2019-05-08 |
| JP5375904B2 (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102980247A (en) | Air conditioner | |
| KR100821728B1 (en) | Air conditioning system | |
| CN104634009B (en) | Control method for air conditioner circulation device | |
| JP4978659B2 (en) | Air conditioner outdoor unit | |
| CN102378881B (en) | Refrigeration cycle device | |
| JP4622990B2 (en) | Air conditioner | |
| CN204730374U (en) | A kind of accumulating type air-conditioning system | |
| CN103154623B (en) | Air-conditioning | |
| CN104913415A (en) | Energy storage-type air conditioning system | |
| CN110207278B (en) | Air conditioner and control method thereof | |
| CN203908148U (en) | Air conditioning system | |
| CN106524605A (en) | Defrosting system and method utilizing four-way reversing valve control hot-gas reversing defrosting mode and electric heating tube defrosting mode for air-cooled refrigerator | |
| CN101509718B (en) | Air cooling refrigerator automatic defrosting system | |
| CN104334981B (en) | Refrigerating plant | |
| CN109307354B (en) | Air conditioning system and control method thereof | |
| CN107388650B (en) | Air-conditioning system and gas-liquid separator hydrops control method | |
| CN108800440A (en) | Air conditioner and its control method | |
| CN109974296A (en) | A kind of air energy water heater and its Defrost method | |
| CN102782423B (en) | Refrigeration cycle device | |
| JP5590087B2 (en) | Heat pump water heater | |
| JP5287820B2 (en) | Air conditioner | |
| JP5287821B2 (en) | Air conditioner | |
| CN110131856B (en) | Air conditioner and control method thereof | |
| CN111089395B (en) | Method for defrosting evaporator by changing flow, computer readable storage medium and air conditioner | |
| CN106288532A (en) | Heat exchanger assembly, air-cooler, refrigeration unit and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |