CN202613832U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN202613832U CN202613832U CN 201220179050 CN201220179050U CN202613832U CN 202613832 U CN202613832 U CN 202613832U CN 201220179050 CN201220179050 CN 201220179050 CN 201220179050 U CN201220179050 U CN 201220179050U CN 202613832 U CN202613832 U CN 202613832U
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- conditioning system
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- heating
- air conditioning
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Abstract
The utility model relates to an air conditioning system. The air conditioning system comprises a compressor, a four-way valve, an outdoor unit, a throttling device and an indoor unit which are sequentially connected with one another through matched pipes so as to form a refrigerating cycle. The air conditioning system further comprises a coolant heating device and a bypass electromagnetic valve, wherein the coolant heating device can be switched on during the low-temperature heating of the air conditioning system, and the bypass electromagnetic valve can be switched on during the defrosting of the air conditioning system; the coolant heating device is connected between a coolant outlet of the outdoor unit and an air suction port of the compressor in series during the heating; and the bypass electromagnetic valve is connected between an air outlet of the compressor and a coolant outlet of the throttling device in parallel during the heating. The heating power of the coolant heating device is variable, and the heating power of the coolant heating device during the defrosting of the air conditioning system is higher than that when the air conditioning system is not in defrosting. Compared with the prior art, the air conditioning system has the following advantages that the air conditioning system is reasonable in design and structure, flexible in operation and short in defrosting time, and the low-temperature heating capacity and the indoor outlet air temperature can be effectively increased; and the problems of insufficient heating capacity, indoor temperature reduction during defrosting, long defrosting time, frequency in defrosting, and the like of the air conditioning system in the prior art are solved.
Description
Technical field
The utility model relates to a kind of air-conditioning system.
Background technology
As shown in Figure 1, the system of traditional air-conditioning comprises compressor 1a, cross valve 2a, off-premises station 3a, assemblies such as indoor set 4a and throttling arrangement 5a.These assemblies link together through pipe arrangement, in system, drive the refrigerant circulation through compressor 1a.Refrigerant circulates in internal system, and realizes the heat exchange between refrigerant and the air through the heat exchanger of indoor set 4a and off-premises station 3a.When cross valve 2a be connected to that u end-v end connects, during the connection of w end-x end; After coming out from compressor 1a, refrigerant gets back to compressor 1a behind process cross valve 2a, off-premises station 3a, throttling arrangement 5a and the indoor set 4a successively; Refrigerant is a high-temperature high-pressure state at off-premises station 3a place, and to the outdoor air heat release, refrigerant is a low-temperature condition at indoor set 4a place; Cool off room air through indoor set 4a, thereby reach the purpose of refrigeration.When cross valve 2 be connected to for u end-w end connects, during the connection of v end-x end, the refrigerant of HTHP is from condensation heat release in the refrigerant that passes through cross valve 2a and indoor set 4a, HTHP after compressor 1a comes out successively is in indoor set 4a, and through the heat exchanger of indoor set 4a heat is delivered in the room air; Thereby reach the purpose that heats; Liquid refrigerants through indoor set 4a condensation continues to be become the two-phase refrigerant of low-temp low-pressure to get into off-premises station 3a and evaporation heat absorption through throttling arrangement 5a by throttling, returns compressor 1a, at this moment; Outdoor temperature is low more; Heating capacity is low more, but in the winter time, indoor needed heat is bigger; The air-conditioning system that causes prior art often can not reach indoor heat requirement when outdoor temperature is low.
When heating, the refrigerant temperature in the off-premises station 3a need be lower than outside air temperature just might realize the purpose of absorbing heat.When outdoor temperature was low, refrigerant temperature can be lower than zero degree, like this after operation after a while; Will frosting on the heat exchanger of off-premises station 3a; And heat exchanger heat exchange effect descends after the frosting, with the refrigerant temperature that further reduces in the off-premises station 3, accelerates the frosting process.When frosting acquired a certain degree, with the heating capacity that sharply reduces air-conditioning system, need defrost this moment to off-premises station 3a.And traditional Defrost mode be adopt connection with cross valve 2 to be transformed to the connection of u end-v end, w end-x holds connection; To directly import off-premises station 3a from the HTHP refrigerant that compressor 1a exports out and realize the defrost effect, wait defrost to accomplish after again with the connection of cross valve 2a be transformed to the connection of u end-w end, v end-x holds connection.In this process, the refrigerant temperature in the indoor set 4a is the low-temp low-pressure refrigerant, not only can not continue to provide heat for indoor, possibly influence the indoor heating effect from indoor absorption heat on the contrary.Therefore, need further to improve.
The utility model content
The purpose of the utility model aims to provide the air-conditioning system that a kind of simplicity of design is reasonable, can promote low-temperature heating ability and low temperature defrost ability; Air-conditioning system; Heating capacity to overcome air-conditioning system in the prior art is not enough; Indoor temperature reduces during defrosting, and the defrost time is long, the frequent weak point that waits of defrost.
A kind of air-conditioning system by this purpose design; Comprise compressor, cross valve, off-premises station, throttling arrangement and indoor set; And connect to form freeze cycle through pipe arrangement successively; Its architectural feature is also to comprise the refrigerant heater that can when the air-conditioning system low-temperature heating, open and the magnetic valve capable of bypass that can when the air-conditioning system defrost, open; Said refrigerant heater is series between the refrigerant exit and compressor air suction mouth of off-premises station when heating, and said bypass solenoid valve is parallel between compressor outlet and the throttling arrangement refrigerant exit when heating.
The heating power of said refrigerant heater is variable, the heating power of refrigerant heater when the heating power of refrigerant heater is greater than the non-defrost of air-conditioning system during the air-conditioning system defrost.
Also be provided with second throttling arrangement between refrigerant exit when said refrigerant heater and off-premises station heat, second throttling arrangement also is parallel with second magnetic valve.
Said refrigerant heater is arranged on the internal body or the body surface of compressor.
The utility model is through the refrigerant heater of connecting between the refrigerant exit when off-premises station heats and the compressor air suction mouth; Parallelly connected bypass solenoid valve between the refrigerant exit when compressor outlet heats with throttling arrangement; When off-premises station generation frosting; Strengthen the heating power of refrigerant heater, open bypass solenoid valve simultaneously, make refrigerant be flowed directly to off-premises station condensation heat release defrost; After defrost is accomplished, reduce the heating power of (or closing) refrigerant heater, close bypass solenoid valve simultaneously, air-conditioning system is by normal heating mode operation, and the indoor set condensation heat release of flowing through earlier flow to off-premises station evaporation heat absorption again, is back to compressor at last.It compared with prior art has the following advantages: reasonable in design, rational in infrastructure, the flexible operation of air-conditioning system, defrosting time is short, can effectively promote low-temperature heating capacity and indoor leaving air temp.Problems such as the heating capacity that overcomes air-conditioning system in the prior art is not enough, indoor temperature reduces during defrosting, the defrost time is long and defrost is frequent.
Description of drawings
Fig. 1 is the schematic diagram of conventional domestic air-conditioning system.
Fig. 2 is the schematic diagram of the utility model one embodiment heating mode.
Fig. 3 is the schematic diagram of an embodiment refrigeration mode.
Fig. 4 is the schematic diagram of another embodiment heating mode.
Among the figure: 1a is a compressor, and 2a is a cross valve, and 3a is an off-premises station, and 4a is an indoor set, and 5a is a throttling arrangement; 1 is compressor, and 2 is cross valve, and 3 is off-premises station, and 4 is indoor set, and 5 is throttling arrangement; 6 is the refrigerant heater, and 7 is magnetic valve, and 8 is the off-premises station blower fan, and 9 is the indoor set blower fan; 10 is the off-premises station heat exchanger, and 11 is the indoor set heat exchanger, and 12 is second throttling arrangement, and 13 is second magnetic valve.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
First embodiment
Referring to Fig. 2-Fig. 3; This air-conditioning system; Comprise compressor 1, cross valve 2, off-premises station 3, throttling arrangement 5 and indoor set 4; And connect to form freeze cycle through pipe arrangement successively; Said air-conditioning system also comprises the refrigerant heater that can when the air-conditioning system low-temperature heating, open 6 and the magnetic valve capable of bypass 7 that can when the air-conditioning system defrost, open, and refrigerant heater 6 is series between the refrigerant exit A1 and compressor air suction mouth A2 of off-premises station 3 when heating, and bypass solenoid valve 7 is parallel between compressor outlet B1 and the throttling arrangement 5 refrigerant exit B2 when heating.
The heating power of refrigerant heater 6 is variable, the heating power of refrigerant heater 6 when the heating power of refrigerant heater 6 is greater than the non-defrost of air-conditioning system during the air-conditioning system defrost.
As shown in Figure 2, be the schematic diagram of this system's heating mode, cross valve 4a end-c end connects, b end-d holds connection; Refrigerant passes through cross valve 2, indoor set 4, throttling arrangement 5 and off-premises station 3 successively after compressor 1 comes out, be back to compressor 1 at last, and the refrigerant of indoor set 4 is a high-temperature high-pressure state; Through indoor set heat exchanger 11 to the room air heat release; Thereby reach the purpose that heats, flow to off-premises station 3 then, this moment, the refrigerant of off-premises station 3 was the low-temp low-pressure state; Need to absorb heat from outdoor air through off-premises station heat exchanger 10, refrigerant is back to compressor 1 again then.As shown in Figure 3, be the schematic diagram of this system's refrigeration mode, cross valve 4a end-b end connects, c end-d holds connection; Refrigerant passes through cross valve 2, off-premises station 3, throttling arrangement 5 and indoor set 4 successively after compressor 1 comes out, be back to compressor 1 at last, is high-temperature high-pressure state at the refrigerant of off-premises station 3; To the outdoor air heat release, flow to indoor set 4 then, at this moment through off-premises station heat exchanger 10; Indoor set 4 place's refrigerants are low-temperature condition; Cool off room airs through indoor set heat exchanger 11 again, thereby reach the purpose of refrigeration, refrigerant is back to compressor 1 again then.
Wherein, refrigerant heater 6 is arranged on the internal body or the body surface of compressor 1.
In the present embodiment, refrigerant heater 6 does not heat when outdoor temperature is higher than 5 degrees centigrade.(heating) is in service does not open normal for bypass solenoid valve 7.When outside air temperature is lower than 5 degrees centigrade and air-conditioning system and heats, open 6 heating of refrigerant heater, and increase its heating power along with the reduction of outdoor temperature, thus the heating capacity of elevator system.
Second embodiment
Referring to Fig. 4, this air-conditioning system is with the main distinction of first embodiment, also is provided with second throttling arrangement, 12, the second throttling arrangements 12 between the refrigerant exit A1 when refrigerant heater 6 and off-premises station 3 heat and also is parallel with second magnetic valve 13.In the present embodiment, refrigerant heater 6 does not heat when outdoor temperature is higher than 5 degrees centigrade.When outside air temperature is lower than 5 degrees centigrade and air-conditioning system and heats, open 6 heating of refrigerant heater, and heating power strengthens along with the reduction of outdoor temperature, thus the heating capacity of elevator system.Wherein, (heating) is in service does not open normal for bypass solenoid valve 7, and (heating) is in service opens normal for second bypass solenoid valve 13.
As aforementioned, when off-premises station 3 frostings, adopt following manner to carry out defrost: cross valve 2 keeps the connection status of indoor heating; Be that a end-c end connects, b end-d holds connection, strengthen the heating power of refrigerant heater 6, stop off-premises station blower fan 8; Turn down (or closing) indoor set blower fan 9 air quantity; Open bypass solenoid valve 7, close second magnetic valve 13, make refrigerant walk around indoor set 4, be flowed directly to off-premises station 3 condensation heat release defrosts.Can further promote the delivery temperature of compressor when defrost, shorten the defrost time.After defrost is accomplished, reduce the heating power (or closing) of refrigerant heater 6, open second magnetic valve 13; Close bypass electromagnetism 7, open off-premises station blower fan 8, recover the air quantity of indoor set blower fan 9; At this moment, air-conditioning system is by the operation of normal heating mode, the refrigerant indoor set 4 condensation heat releases of flowing through earlier; Flow to off-premises station 3 evaporation heat absorptions again, be back to compressor 1 at last.
Other do not state part, with first embodiment, no longer repeat.
Claims (4)
1. air-conditioning system; Comprise compressor (1), cross valve (2), off-premises station (3), throttling arrangement (5) and indoor set (4); And connect to form freeze cycle through pipe arrangement successively; It is characterized in that also comprising the refrigerant heater (6) that when the air-conditioning system low-temperature heating, to open and the magnetic valve capable of bypass (7) that can when the air-conditioning system defrost, open; Said refrigerant heater (6) is series between the refrigerant exit (A1) and compressor air suction mouth (A2) of off-premises station (3) when heating, and said bypass solenoid valve (7) is parallel between compressor outlet (B1) and the refrigerant exit (B2) of throttling arrangement (5) when heating.
2. air-conditioning system according to claim 1; The heating power that it is characterized in that said refrigerant heater (6) is variable, the heating power of refrigerant heater (6) when the heating power of refrigerant heater (6) is greater than the non-defrost of air-conditioning system during the air-conditioning system defrost.
3. air-conditioning system according to claim 1 and 2; It is characterized in that also being provided with second throttling arrangement (12) between said refrigerant heater (6) and off-premises station (3) refrigerant exit (A1) when heating, second throttling arrangement (12) also is parallel with second magnetic valve (13).
4. air-conditioning system according to claim 3 is characterized in that said refrigerant heater (6) is arranged on the internal body or the body surface of compressor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179050 CN202613832U (en) | 2012-04-24 | 2012-04-24 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179050 CN202613832U (en) | 2012-04-24 | 2012-04-24 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202613832U true CN202613832U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220179050 Expired - Lifetime CN202613832U (en) | 2012-04-24 | 2012-04-24 | Air conditioning system |
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| CN (1) | CN202613832U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101143A (en) * | 2014-06-24 | 2014-10-15 | 美的集团武汉制冷设备有限公司 | Air conditioner and control method thereof |
| CN104482686A (en) * | 2014-12-04 | 2015-04-01 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN106152642A (en) * | 2016-07-11 | 2016-11-23 | 珠海格力电器股份有限公司 | Air-conditioner reverse circulation defrosting control method |
| CN106352629A (en) * | 2016-08-22 | 2017-01-25 | 珠海格力电器股份有限公司 | Air conditioner and bypass heating defrosting control method thereof |
| CN106403081A (en) * | 2016-09-07 | 2017-02-15 | 广东美的暖通设备有限公司 | Multi-union machine and control method thereof |
| CN110836554A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Heat pump system, control method thereof and defrosting control method |
| CN112197489A (en) * | 2020-07-17 | 2021-01-08 | Tcl家用电器（合肥）有限公司 | Evaporator defrosting method and device, refrigerator, computer equipment and storage medium |
| CN112413821A (en) * | 2020-12-08 | 2021-02-26 | 合肥美的暖通设备有限公司 | Air conditioning equipment, control method, control device and readable storage medium |
| CN114165937A (en) * | 2021-12-06 | 2022-03-11 | 格力电器（合肥）有限公司 | Four-way valve pipeline and air conditioner |
| CN114812024A (en) * | 2022-05-06 | 2022-07-29 | 青岛海信日立空调***有限公司 | Air conditioner and defrosting method thereof |
-
2012
- 2012-04-24 CN CN 201220179050 patent/CN202613832U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101143A (en) * | 2014-06-24 | 2014-10-15 | 美的集团武汉制冷设备有限公司 | Air conditioner and control method thereof |
| CN104482686A (en) * | 2014-12-04 | 2015-04-01 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN106152642A (en) * | 2016-07-11 | 2016-11-23 | 珠海格力电器股份有限公司 | Air-conditioner reverse circulation defrosting control method |
| CN106352629A (en) * | 2016-08-22 | 2017-01-25 | 珠海格力电器股份有限公司 | Air conditioner and bypass heating defrosting control method thereof |
| CN106403081A (en) * | 2016-09-07 | 2017-02-15 | 广东美的暖通设备有限公司 | Multi-union machine and control method thereof |
| CN106403081B (en) * | 2016-09-07 | 2019-08-27 | 广东美的暖通设备有限公司 | Multi-connected machine and its control method |
| CN110836554A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Heat pump system, control method thereof and defrosting control method |
| CN112197489A (en) * | 2020-07-17 | 2021-01-08 | Tcl家用电器（合肥）有限公司 | Evaporator defrosting method and device, refrigerator, computer equipment and storage medium |
| CN112413821A (en) * | 2020-12-08 | 2021-02-26 | 合肥美的暖通设备有限公司 | Air conditioning equipment, control method, control device and readable storage medium |
| CN114165937A (en) * | 2021-12-06 | 2022-03-11 | 格力电器（合肥）有限公司 | Four-way valve pipeline and air conditioner |
| CN114812024A (en) * | 2022-05-06 | 2022-07-29 | 青岛海信日立空调***有限公司 | Air conditioner and defrosting method thereof |
| CN114812024B (en) * | 2022-05-06 | 2023-11-07 | 青岛海信日立空调***有限公司 | Air conditioner and defrosting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Handan Midea Refrigeration Equipment Co., Ltd. Assignor: Meidi Electric Appliances Co., Ltd., Guangdong Contract record no.: 2013440000156 Denomination of utility model: Air conditioning system and control method Granted publication date: 20121219 License type: Exclusive License Record date: 20130502 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131203 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: Midea Group Co., Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |