CN201314725Y - Heat pump type room air conditioner - Google Patents

Heat pump type room air conditioner Download PDF

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Publication number
CN201314725Y
CN201314725Y CNU200820158987XU CN200820158987U CN201314725Y CN 201314725 Y CN201314725 Y CN 201314725Y CN U200820158987X U CNU200820158987X U CN U200820158987XU CN 200820158987 U CN200820158987 U CN 200820158987U CN 201314725 Y CN201314725 Y CN 201314725Y
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CN
China
Prior art keywords
heat exchanger
outdoor heat
indoor
outdoor
air conditioner
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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.)
Expired - Fee Related
Application number
CNU200820158987XU
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Chinese (zh)
Inventor
曹小林
陈惠�
杨思思
潘雯
冯明坤
曹双俊
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Central South University
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Central South University
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Priority to CNU200820158987XU priority Critical patent/CN201314725Y/en
Application granted granted Critical
Publication of CN201314725Y publication Critical patent/CN201314725Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a heat pump type room air conditioner. A first outdoor heat exchanger (4) and a second outdoor heat exchanger (5) are connected parallelly outside; pipelines which are connected with the first outdoor heat exchanger (4), the second outdoor heat exchanger (5) and a four-way valve (2) are provided with solenoid valves (6, 7, 8, 9); the pipelines which are connected with an indoor heat exchanger (3) are provided with throttle devices (10, 11); the solenoid valves (6, 7, 8, 9) are electrically connected with a detection control system; a throttle device (12) is connected between the first outdoor heat exchanger (4) and the second outdoor heat exchanger (5). When defrosting is needed, the exhaust of a compressor is divided into two parts after going through the four-way valve, wherein, one part enters into an indoor unit to ensure indoor heat supply, and the other part enters into one outdoor heat exchanger for defrosting; condensate enters the other outdoor heat exchanger to be evaporated after being throttled; and the refrigerant steam returns to the compressor. Under the heat generation conditions and non-stop indoor heat supply in winter, the heat pump type room air conditioner can quickly remove the frost on the outdoor heat exchangers.

Description

A kind of pump type heat room air conditioner
Technical field
The utility model relates to a kind of air-conditioner, particularly relates to a kind of pump type heat room air conditioner.
Background technology
Because air source heat pump air conditioner is in the winter time when heating the mode heat supply running, the easy frosting of outdoor heat converter influences the heat exchange property of outdoor heat exchanger, influences the heating effect of air-conditioning, must defrost to outdoor heat converter.
Traditional Defrost method is that the blower fan of indoor set is shut down, and four-way change-over valve is switched, and air-conditioning system is moved according to refrigeration modes.At this moment the condenser that is converted under the cooling condition of outdoor heat exchanger comes usefulness, and the required heat of outdoor heat exchanger defrosting is the caloric receptivity and the compressor work sum of indoor heat exchanger.There is following shortcoming in this Defrost mode:
Because the shutdown of the blower fan of indoor set, the caloric receptivity of indoor heat exchanger from indoor environment are seldom, defrosting heat relative deficiency makes defrosting time long;
Because the indoor fan stall, indoor set can not blow out hot blast in defrosting time, influence indoor comfort degree, and even more serious is that indoor heat exchanger needs draw heat from indoor environment during owing to defrosting, makes room temperature to descend, and makes indoor environment more abominable.
Because defrosting time is long, the defrosting meeting on outdoor heat exchanger top drops on the lower fins, and following face cream lamination is tired a lot, is difficult to remove, and causes ice sheet to pile up, and influences heat exchanger efficiency.
The utility model content
Technical problem to be solved in the utility model is that proposition is a kind of except that having the function that freeze the summer identical with the conventional air-conditioning system, heat winter, can also be under winter heating operation operating mode, under the prerequisite of uninterrupted indoor heating, remove the frosting on the outdoor heat exchanger apace, guarantee the pump type heat room air conditioner of indoor comfort degree simultaneously.
In order to solve the problems of the technologies described above, the pump type heat room air conditioner that the utility model provides, comprise a compressor, one is used for just switching, the counter refrigerant flow to cross valve, be installed at least one indoor indoor heat exchanger, one is detected control system, in outdoor parallel connection first outdoor heat exchanger and second outdoor heat exchanger are housed, on described first outdoor heat exchanger and second outdoor heat exchanger and the pipeline that described cross valve is connected magnetic valve is housed respectively, on described first outdoor heat exchanger and second outdoor heat exchanger and the pipeline that described indoor heat exchanger is connected throttling arrangement is housed respectively, described magnetic valve is electrically connected with described detection control system, is connected with throttling arrangement between described first outdoor heat exchanger and second outdoor heat exchanger.
Described throttling arrangement is capillary or electric expansion valve.
The defrosting of this air source heat pump air conditioner is achieved in that
When freezing with the heating condition operation normally, first outdoor heat exchanger and second outdoor heat exchanger are in parallel to be used, and has identical functions, and as same outdoor heat exchanger, whole air-conditioning system is as the air-conditioning of routine.
When needs defrost, the HTHP exhaust cold-producing medium separated into two parts of compressor enters two refrigerant tubings respectively, a part enters indoor heat exchanger, guarantee indoor heat supply, another part enters one of them outdoor heat exchanger, for this outdoor heat exchanger defrosting provides heat, condensate liquid is then through all entering another outdoor heat exchanger evaporation after the throttling, the refrigerant vapour that is evaporated enters compressor and forms a circulation, after an outdoor heat exchanger defrosting is finished, detect control system control respective electrical magnet valve, make this outdoor heat exchanger be used as evaporimeter and use and to heat circulation, another outdoor heat exchanger then can continue as required when evaporimeter with or when condenser use carrying out defrost operation.
The function switching of two outdoor heat exchangers is finished by four solenoid control that are attached thereto, and four magnetic valves are controlled by the detection control system of air-conditioning.
Connect with throttle capillary tube between two outdoor heat exchangers, when freezing normally and heating circulation time, this capillary cuts little ice.When outdoor heat exchanger defrosted, this capillary can enter another outdoor heat exchanger with after the condensate liquid throttling of coming out from this outdoor heat exchanger.
Two outdoor heat exchangers are installed, and when a heat exchanger heated operation, another heat exchanger carried out defrost operation, like this, can guarantee that indoor set is in the heating operation operating mode always, can not have influence on indoor comfort level.In addition, because be to adopt the high temperature hot gas defrosting, and be to remove from frost layer root, blower fan is operation as usual, and the frost layer that root melts comes off easily, and defrosting speed is very fast.
In sum, the utility model is a kind of except that having the function that freeze the summer identical with the conventional air-conditioning system, heat winter, can also be under winter heating operation operating mode, under the prerequisite of uninterrupted indoor heating, remove the frosting on the outdoor heat exchanger apace, guarantee the pump type heat room air conditioner of indoor comfort degree simultaneously.
Description of drawings
The described kind of refrigeration cycle flow chart of Fig. 1 the utility model system;
The described circulation process figure that normally heats of Fig. 2 the utility model system;
The described first outdoor heat exchanger defrost cycle flow chart of Fig. 3 the utility model system;
The described second outdoor heat exchanger defrost cycle flow chart of Fig. 4 the utility model system;
Fig. 5 control flow chart that defrosts.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, a compressor 1 is used for just switching by one, the counter refrigerant flow to cross valve 2 be installed in an indoor indoor heat exchanger 3 and be contained in outdoor first outdoor heat exchanger 4 with parallel connection and be connected with second outdoor heat exchanger 5, indoor heat exchanger 3 can be one or more, on first outdoor heat exchanger 4 and the pipeline that cross valve 2 is connected first magnetic valve 6 and second magnetic valve 7 are housed respectively, on second outdoor heat exchanger 5 and the pipeline that cross valve 2 is connected the 3rd magnetic valve 8 and the 4th magnetic valve 9 are housed respectively, on first outdoor heat exchanger 4 and the pipeline that indoor heat exchanger 3 is connected first throttle device 10 is housed, on second outdoor heat exchanger 5 and the pipeline that indoor heat exchanger 3 is connected second throttling arrangement 11 is housed, first magnetic valve 6, second magnetic valve 7, the 3rd magnetic valve 8 and the 4th magnetic valve 9 are electrically connected with detecting control system, are connected with the 3rd throttling arrangement 12 between first outdoor heat exchanger 4 and second outdoor heat exchanger 5.
First throttle device 10, second throttling arrangement 11, the 3rd throttling arrangement 12 can be capillaries, also can be electric expansion valves.
Refrigeration, refrigeration, the defrosting operation principle of the heat pump type air conditioning system that the utility model proposes below by description of drawings.
One, summer normal refrigerating operaton operating mode:
Circulation process during system normal refrigerating operaton as shown in Figure 1.At this moment, first magnetic valve 6 and the 4th magnetic valve 9 are closed, and second magnetic valve 7 and the 3rd magnetic valve 8 are opened.Discharge the compressed machine of cold-producing medium 1 compression back, the high-temperature high-pressure refrigerant steam of discharging, a port by four-way change-over valve 2 enters the 3rd refrigerant tubing 15 that links to each other with the b port, to first outdoor heat exchanger 4 and second outdoor heat exchanger 5 used as condenser, after in these two outdoor heat exchangers, being condensed into liquid, cold-producing medium enters indoor heat exchanger 3 by the first throttle device 10 and second throttling arrangement 11 respectively, at this moment, indoor heat exchanger 3 is used as evaporimeter, cold-producing medium becomes saturated refrigerant vapour in evaporimeter heat absorption evaporation, refrigerant vapour again by the c port flow of four-way change-over valve 2 behind the d port, get back to compressor 1 air entry by the 4th refrigerant tubing 16.Such kind of refrigeration cycle and conventional air-conditioning system are as good as.
Two, winter normal heating operation operating mode
Circulation process during system normal heating operation as shown in Figure 2.At this moment, first magnetic valve 6 and the 4th magnetic valve 9 are closed, and second magnetic valve 7 and the 3rd magnetic valve 8 are opened.Discharge the compressed machine of cold-producing medium 1 compression back, the high-temperature high-pressure refrigerant steam of discharging, a port by four-way change-over valve 2 enters first refrigerant tubing 13 that links to each other with the c port, to the indoor heat exchanger of using as condenser 3, after in indoor heat exchanger 3, being condensed into liquid, cold-producing medium enters first outdoor heat exchanger 4 and second outdoor heat exchanger 5 respectively again by the first throttle device 10 and second throttling arrangement 11 respectively, at this moment, outdoor heat exchanger is used as evaporimeter, cold-producing medium becomes saturated refrigerant vapour in evaporimeter heat absorption evaporation, refrigerant vapour again by the c port flow of four-way change-over valve 2 behind the d port, get back to compressor 1 air entry by the 4th refrigerant tubing 16.The air-conditioning system that heats circulation and routine like this is as good as.
Three, outdoor heat exchanger defrosting operating condition
The operation control strategy that the utility model system adopts first outdoor heat exchanger 4 and second outdoor heat exchanger 5 to defrost respectively.
When detection system detected first outdoor heat exchanger 4 and need defrost, at this moment, second magnetic valve 7 and the 4th magnetic valve 9 were closed, and first magnetic valve 6 and the 3rd magnetic valve 8 are opened.System's defrost cycle flow process as shown in Figure 3.Discharge after the compressed machine 1 of cold-producing medium is compressed into high temperature and high pressure steam, enter first refrigerant tubing 13 and second refrigerant tubing 14 that links to each other with the c port through a of four-way change-over valve port.Enter first refrigerant tubing, 13 this part cold-producing medium and still enter indoor heat exchanger 3, the room is heated, cold-producing medium is again through entering second outdoor heat exchanger 5 as second throttling arrangement 11, this moment, second outdoor heat exchanger 5 used as evaporimeter as usual, the refrigerant vapour that is evaporated flows through magnetic valve 8, gets back to compressor 1 through the d port by the 4th refrigerant tubing 16 by the b port of four-way change-over valve 2 through the 3rd refrigerant tubing 15 tunnel.Another part high temperature refrigerant steam that enters second refrigerant tubing 14 then enters first outdoor heat exchanger 4 through first magnetic valve 6, this moment, first outdoor heat exchanger 4 was used as the condenser use, condensed liquid after 12 throttlings of the 3rd throttling arrangement and indoor heat exchanger 3 refrigerant liquid of coming converge, and be sent to 5 devaporations of second outdoor heat exchanger.Long-pending frost on first outdoor heat exchanger 4 can cooled dose condensation heat melt, reach the purpose of defrosting.
When detection system detected second outdoor heat exchanger 5 and need defrost, at this moment, first magnetic valve 6 and the 3rd magnetic valve 8 were closed, and second magnetic valve 7 and the 4th magnetic valve 9 are opened.System's defrost cycle flow process as shown in Figure 4.Discharge after the compressed machine 1 of cold-producing medium is compressed into high temperature and high pressure steam, enter first refrigerant tubing 13 and second refrigerant tubing 14 that links to each other with the c port through a of four-way change-over valve port.Enter first refrigerant tubing, 13 this part cold-producing medium and still enter indoor heat exchanger 3, the room is heated, cold-producing medium is again through entering first outdoor heat exchanger 4 as second throttling arrangement 11, this moment, first outdoor heat exchanger 4 used as evaporimeter as usual, the refrigerant vapour that is evaporated flows through magnetic valve 7, gets back to compressor 1 through the d port by the 4th refrigerant tubing 16 by the b port of four-way change-over valve 2 through the 3rd refrigerant tubing 15 tunnel.Another part high temperature refrigerant steam that enters second refrigerant tubing 14 then enters second outdoor heat exchanger 5 through the 4th magnetic valve 9, this moment, second outdoor heat exchanger 5 was used as the condenser use, condensed liquid after 12 throttlings of the 3rd throttling arrangement and indoor heat exchanger 3 refrigerant liquid of coming converge, and be sent to first outdoor heat exchanger 4.Long-pending frost on second outdoor heat exchanger 5 can cooled dose condensation heat melt, reach the purpose of defrosting.
By connecting the 3rd throttling arrangement 12 between two outdoor heat exchangers, the condensate liquid in the defrosting outdoor heat exchanger is imported in another outdoor heat exchanger, avoided refrigerant liquid to get back to the possibility that compressor produces liquid hammer.
When detecting first outdoor heat exchanger 4 and second outdoor heat exchanger 5 simultaneously and need defrost, adopt the preferential operation control strategy of first outdoor heat exchanger 4,4 defrostings of first outdoor heat exchanger finish and restart second outdoor heat exchanger, 5 Defrost operations.Like this, can guarantee that indoor heat exchanger 3 is in the heating operation operating mode always, can not have influence on indoor comfort level.Control flow chart as shown in Figure 5.In addition, because be to adopt the high temperature hot gas defrosting, and be to remove from frost layer root, blower fan is operation as usual, and the frost layer that root melts comes off easily, and defrosting speed is very fast.

Claims (2)

1, a kind of pump type heat room air conditioner, comprise a compressor (1), one is used for just switching, the counter refrigerant flow to cross valve (2), be installed in indoor at least one indoor heat exchanger (3), one is detected control system, it is characterized in that: first outdoor heat exchanger (4) and second outdoor heat exchanger (5) are housed in outdoor parallel connection, on described first outdoor heat exchanger (4) and second outdoor heat exchanger (5) and the pipeline that described cross valve (2) is connected magnetic valve (6 is housed respectively, 7,8,9), on described first outdoor heat exchanger (4) and second outdoor heat exchanger (5) and the pipeline that described indoor heat exchanger (3) is connected throttling arrangement (10 is housed respectively, 11), described magnetic valve (6,7,8,9) be electrically connected with described detection control system, be connected with throttling arrangement (12) between described first outdoor heat exchanger (4) and second outdoor heat exchanger (5).
2, pump type heat room air conditioner according to claim 1 is characterized in that: described throttling arrangement (10,11,12) is capillary or electric expansion valve.
CNU200820158987XU 2008-10-31 2008-10-31 Heat pump type room air conditioner Expired - Fee Related CN201314725Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU200820158987XU CN201314725Y (en) 2008-10-31 2008-10-31 Heat pump type room air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU200820158987XU CN201314725Y (en) 2008-10-31 2008-10-31 Heat pump type room air conditioner

Publications (1)

Publication Number Publication Date
CN201314725Y true CN201314725Y (en) 2009-09-23

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822314A (en) * 2014-02-14 2014-05-28 银翔 Heat-pump-type split air conditioner outdoor unit and split air conditioner comprising same
CN104114391A (en) * 2012-02-16 2014-10-22 法雷奥热系统公司 Air-conditioning loop functioning as a pulse electro-thermal deicing heat pump
CN105202834A (en) * 2015-09-09 2015-12-30 广东美的暖通设备有限公司 Multi-connected air conditioning unit system and defrosting control method thereof
CN108895584A (en) * 2018-07-19 2018-11-27 广东志高暖通设备股份有限公司 A kind of multiple heat pump circulating device that not shutting down defrost and promote heating capacity
CN109612026A (en) * 2018-11-22 2019-04-12 海信(山东)空调有限公司 Outdoor unit, air conditioner and its Defrost method
CN111854245A (en) * 2020-06-28 2020-10-30 珠海格力电器股份有限公司 Heat pump unit with defrosting function and control method thereof
CN112361640A (en) * 2020-10-15 2021-02-12 珠海格力电器股份有限公司 Air conditioning system and defrosting method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104114391A (en) * 2012-02-16 2014-10-22 法雷奥热系统公司 Air-conditioning loop functioning as a pulse electro-thermal deicing heat pump
CN103822314A (en) * 2014-02-14 2014-05-28 银翔 Heat-pump-type split air conditioner outdoor unit and split air conditioner comprising same
CN105202834A (en) * 2015-09-09 2015-12-30 广东美的暖通设备有限公司 Multi-connected air conditioning unit system and defrosting control method thereof
CN105202834B (en) * 2015-09-09 2017-12-08 广东美的暖通设备有限公司 Multiple on-line system and its defrosting control method
CN108895584A (en) * 2018-07-19 2018-11-27 广东志高暖通设备股份有限公司 A kind of multiple heat pump circulating device that not shutting down defrost and promote heating capacity
CN109612026A (en) * 2018-11-22 2019-04-12 海信(山东)空调有限公司 Outdoor unit, air conditioner and its Defrost method
CN111854245A (en) * 2020-06-28 2020-10-30 珠海格力电器股份有限公司 Heat pump unit with defrosting function and control method thereof
CN112361640A (en) * 2020-10-15 2021-02-12 珠海格力电器股份有限公司 Air conditioning system and defrosting method thereof
CN112361640B (en) * 2020-10-15 2022-01-28 珠海格力电器股份有限公司 Air conditioning system and defrosting method thereof

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090923

Termination date: 20101031

C17 Cessation of patent right