CN201251315Y - Air conditioner capable of system protection under high temperature condition - Google Patents
Air conditioner capable of system protection under high temperature condition Download PDFInfo
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- CN201251315Y CN201251315Y CNU2008200516551U CN200820051655U CN201251315Y CN 201251315 Y CN201251315 Y CN 201251315Y CN U2008200516551 U CNU2008200516551 U CN U2008200516551U CN 200820051655 U CN200820051655 U CN 200820051655U CN 201251315 Y CN201251315 Y CN 201251315Y
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Abstract
The utility model relates to an air conditioner capable of system protection under high temperature condition, which comprises an electric control board and a refrigerant circulation system pipeline. The refrigerant circulation system pipeline includes a compressor, an outdoor condenser, capillary tubes and an indoor evaporator which are sequentially connected, a decompression protection branch formed by an electromagnetic valve and auxiliary capillary tubes in series connection is in parallel connection between a compressor exhaust pipe and a liquid return pipe, a thermistor is disposed on one side of the compressor exhaust pipe, and the thermistor is provided with a signal cable connected with the electric control board. The utility model has the advantages that the decompression protection branch formed by the electromagnet and the auxiliary capillary tubes in series connection can effectively reduce the system pressure under high temperature condition, avoids frequent start-stop of the compressor, and guarantees normal operation of the system under high temperature condition, fewer changes to the system pipeline are made, thereby the manufacturing cost of the whole conditioner is low, and further, the utility model is quite adaptable to use at areas with extremely high external environmental temperature.
Description
Technical field
The utility model is a kind of air-conditioner, specifically is a kind of air-conditioner that can carry out system protection under the hot environment with unloading pressure reducing protection mechanism that disposes in the loop of refrigeration system, belongs to the improvement technology of existing air-conditioner.
Background technology
Existing air-conditioner, if the too high meeting of outdoor temperature causes refrigeration system pressure excessive, compressor temperature raises and overload protection during refrigeration.
The pressure reducing protection too high for environment temperature or the excessive needs of indoor load carry out; common safeguard measure is a unloading protecting at present; promptly pressure-head switch is set in refrigeration system mesohigh side; compressor shutdown when pressure surpasses setting value; when pressure recovers compressor start just often; can cause the frequent start-stop of compressor so on the one hand, can cause refrigerating capacity to descend on the other hand.In addition; the content of announcing as following Chinese patent formerly; the patent No. 01209742; patent name is the air-conditioner with unloading pressure protection device; its scheme is that the air-conditioner unit comprises evaporimeter, cross valve, compressor, condenser, capillary and the check valve that connects in regular turn; wherein capillary with connect and the uninstall protection device that adopts pipeline to be connected with described compressor, condenser and capillary respectively after described check valve is connected in parallel again with described condenser and capillary.Though above-mentioned patent can be controlled the cold medium flux in the system pipeline, but when under hot environment, using, resistance increases when causing refrigerant to flow through capillary owing to the indoor set thermic load is excessive, and the Energy Efficiency Ratio of system reduces, and long-time use also easily causes the damage of compressor.
The utility model content
The purpose of this utility model is to address the above problem with deficiency provides a kind of unlatching number of times that effectively reduces compressor under the prerequisite of protection system safety, can carry out the air-conditioner of system protection under the hot environment of the overall refrigerating effect of raising system.
The technical scheme that realizes the utility model purpose is: the utility model includes automatically controlled plate and coolant circulating system pipeline; the coolant circulating system pipeline includes compressor, outdoor condenser, capillary, the indoor evaporator that connects successively; between compressor exhaust pipe and liquid back pipe, be parallel with the pressure reducing protection branch road that is in series by magnetic valve and assisted capillary; in compressor exhaust pipe one side one thermistor is set, thermistor has holding wire and automatically controlled plate to join.
Technique scheme; under normal temperature conditions; the HTHP refrigerant of discharging from compressor in the coolant circulating system pipeline; when its temperature does not reach a certain value T1 of setting; magnetic valve in the described pressure reducing protection branch road is in closed condition; refrigerant is discharged after the capillary of flowing through after the condenser condenses carries out evaporation and heat-exchange to evaporimeter again from compressor, gets back to compressor at last.
Under being in hot environment, air-conditioner moves; system pressure rises rapidly; delivery temperature raises; sense behind a certain value T1 that delivery temperature is elevated to setting when thermistor and to feed back signal to automatically controlled plate after (compressor temperature of T1 correspondence is lower than the critical value of the unloading protecting temperature of compressor); automatically controlled plate control magnetic valve is opened; this moment, a high-pressure side refrigerant part was through magnetic valve and the assisted capillary low-pressure side evaporimeter of flowing through; then the pressure in the system pipeline reduces; delivery temperature reduces; the temperature of compressor also can correspondingly reduce, thereby guarantees refrigeration system normally operation under hot environment.When sensing delivery temperature when thermistor and being reduced to (T1-X ℃), automatically controlled plate control closed electromagnetic valve, then refrigerant will circulate along original pipeline.
Owing to the parallel branch at assisted capillary place, can effectively reduce the capillary inlet end refrigerant pressure of original system pipeline, the flow velocity of the refrigerant of flow through capillary and assisted capillary can not descend too much, thereby can guarantee the Energy Efficiency Ratio of system.
The above-mentioned pressure reducing protection branch road of being made up of magnetic valve and assisted capillary, the scheme concrete in parallel in its coolant circulating system pipeline can have following three kinds:
First kind of scheme be, an end of pressure reducing protection branch road is connected between compressor exhaust pipe and the condenser inflow pipe, and the other end is connected capillary outlet end one side.
This kind scheme, the feedback signal control plate of wiring back when thermistor is sensed temperature and reached T1, automatically controlled plate control magnetic valve is opened, part refrigerant directly arrives in the evaporimeter through assisted capillary without condenser and evaporates, then the resistance in the capillary reduces greatly, system pressure also greatly reduces, thereby guarantees that system pressure is within the normal range (NR).Simultaneously, the refrigerant evaporation heat absorption in the evaporimeter of flowing through all, less to the refrigerating capacity and the Energy Efficiency Ratio influence of system.
Second kind of scheme be, pressure reducing protection branch road one end is connected between condenser effuser and the capillary liquid feeding end, and the other end is connected capillary outlet end one side.
This kind scheme, the feedback signal control plate of wiring back when thermistor is sensed temperature and reached T1, automatically controlled plate control magnetic valve is opened, refrigerant all through condenser condenses after assisted capillary splitter section refrigerant arrives in the evaporimeter evaporates, promptly increase the cold medium flux of system unit time, system pressure also greatly reduces, and is less to the refrigerating capacity and the Energy Efficiency Ratio influence of system simultaneously.
The third scheme is, pressure reducing protection branch road one end is connected condenser effuser one side, and the other end directly is connected compressor return air pipe one side.
This kind scheme, the feedback signal control plate of wiring back when thermistor is sensed temperature and reached T1, automatically controlled plate control magnetic valve is opened, and refrigerant is all after condenser condenses, refrigerant by assisted capillary directly flows back to compressor without evaporimeter, and is bigger to the refrigerating capacity influence of system.But simultaneously, can reduce system pressure rapidly, thereby the very high area of suitable outdoor environment temperature.
As mentioned above, the utility model has following beneficial effect compared to prior art:
1, the pressure reducing protection branch road that is in series by magnetic valve and assisted capillary can effectively reduce the system pressure under the hot environment, avoids the frequent start-stop of compressor, the normal operation of assurance system under hot environment;
2, little for the change of system pipeline, the complete machine manufacturing cost is lower;
3, be very suitable for externally environment temperature extra high area use.
Description of drawings
Fig. 1 is the coolant circulating system pipeline structure schematic diagram of the utility model embodiment 1;
Fig. 2 is the coolant circulating system pipeline structure schematic diagram of the utility model embodiment 2;
Fig. 3 is the coolant circulating system pipeline structure schematic diagram of the utility model embodiment 3.
Among the figure: compressor 1, thermistor 2, outdoor condenser 3, magnetic valve 4, capillary 5, assisted capillary 6, indoor evaporator 7, automatically controlled plate 8.
The specific embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present utility model is described further.
Embodiment 1:
As shown in Figure 1; the utility model includes automatically controlled plate 8 and coolant circulating system pipeline; the coolant circulating system pipeline includes the compressor 1 that connects successively; outdoor condenser 3; capillary 5; indoor evaporator 7; a pressure reducing protection branch road in parallel between the blast pipe of compressor 1 and loop; pressure reducing protection props up route magnetic valve 4 and assisted capillary 6 is in series; magnetic valve 4 is connected between the inflow pipe of the blast pipe of compressor 1 and outdoor condenser 3; and the fluid port of assisted capillary 6 is connected outlet end one side of capillary 5; connect a thermistor 2 at compressor exhaust pipe one face down bonding, thermistor 2 has holding wire and automatically controlled plate 8 to join.
During work, when system pressure excessive, compressor 1 excessive discharge temperature, when the temperature that thermistor 2 is sensed reaches a certain setting value T1, automatically controlled plate 8 control magnetic valves 4 are opened, and this moment, a part of refrigerant condenser 3 of not flowing through directly entered indoor evaporator 7 through magnetic valves 4 and assisted capillary 6, and then the resistance in the capillary 5 reduces greatly, system pressure also greatly reduces, thereby guarantees that system pressure is within the normal range (NR).Simultaneously, the refrigerant evaporation heat absorption in the indoor evaporator 7 of flowing through all, less to the refrigerating capacity and the Energy Efficiency Ratio influence of system.
Embodiment 2:
As shown in Figure 2, present embodiment as different from Example 1, magnetic valve 4 is connected after the outdoor condenser 3, and the fluid port of assisted capillary 6 still is connected outlet end one side of capillary 5.
During work, the feedback signal control plate 8 of wiring back when thermistor 2 is sensed temperature and reached T1, automatically controlled plate 8 control magnetic valves 4 are opened, refrigerant all through condenser condenses after assisted capillary 6 splitter section refrigerants arrive evaporation in the evaporimeter 7, promptly increase the cold medium flux of system unit time, system pressure also greatly reduces, and is less to the refrigerating capacity and the Energy Efficiency Ratio influence of system simultaneously.
Embodiment 3:
As shown in Figure 3, present embodiment as different from Example 1, magnetic valve 4 is connected condenser 3 effusers one side in the system pipeline, assisted capillary 6 fluid ports directly are connected muffler one side of compressor 1.
During work, the feedback signal control plate 8 of wiring back when thermistor 2 is sensed temperature and reached T1, automatically controlled plate 8 control magnetic valves 4 are opened, and refrigerant is all after condenser condenses, refrigerant by assisted capillary 6 directly flows back to compressor 1 without evaporimeter 7, and is bigger to the refrigerating capacity influence of system.But simultaneously, can reduce system pressure rapidly, thereby the very high area of suitable outdoor environment temperature.
Claims (4)
1, can carry out the air-conditioner of system protection under a kind of hot environment; include automatically controlled plate (8) and coolant circulating system pipeline; the coolant circulating system pipeline includes compressor (1), outdoor condenser (3), capillary (5), the indoor evaporator (7) that connects successively; it is characterized in that between compressor (1) blast pipe and liquid back pipe, being parallel with the pressure reducing protection branch road that is in series by magnetic valve (4) and assisted capillary (6); in compressor (1) blast pipe one side one thermistor (2) is set, thermistor (2) has holding wire and automatically controlled plate (8) to join.
2, can carry out the air-conditioner of system protection under the hot environment according to claim 1; an end that it is characterized in that the pressure reducing protection branch road is connected between compressor (1) blast pipe and condenser (3) inflow pipe, and the other end is connected capillary (5) outlet end one side.
3, can carry out the air-conditioner of system protection under the hot environment according to claim 1; an end that it is characterized in that the pressure reducing protection branch road is connected between condenser (3) effuser and capillary (5) liquid feeding end, and the other end is connected capillary (5) outlet end one side.
4, can carry out the air-conditioner of system protection under the hot environment according to claim 1, it is characterized in that an end of pressure reducing protection branch road is connected condenser (3) effuser one side, the other end directly is connected compressor (1) muffler one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200516551U CN201251315Y (en) | 2008-08-01 | 2008-08-01 | Air conditioner capable of system protection under high temperature condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200516551U CN201251315Y (en) | 2008-08-01 | 2008-08-01 | Air conditioner capable of system protection under high temperature condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251315Y true CN201251315Y (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200516551U Expired - Fee Related CN201251315Y (en) | 2008-08-01 | 2008-08-01 | Air conditioner capable of system protection under high temperature condition |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435026A (en) * | 2011-11-11 | 2012-05-02 | 广东美的电器股份有限公司 | Auxiliary device of multi-connected air conditioner heat pump system |
| CN102734990A (en) * | 2012-06-21 | 2012-10-17 | 上海三电冷机有限公司 | Method for reducing exhaust pressure of CO2 compressor at initial startup stage and CO2 refrigerating unit |
| CN105571076A (en) * | 2016-01-20 | 2016-05-11 | 青岛海尔空调电子有限公司 | Control method for refrigerating of water-cooled multi-split air conditioner |
| 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 |
| CN108679779A (en) * | 2018-05-03 | 2018-10-19 | 广东美的制冷设备有限公司 | Air-conditioner outdoor unit, air conditioner, control method, controller and storage medium |
| CN109579296A (en) * | 2017-09-29 | 2019-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of Teat pump boiler unit and its control method |
| CN110260553A (en) * | 2019-06-10 | 2019-09-20 | 广东美的制冷设备有限公司 | The control method of air conditioner and air conditioner |
| CN110864397A (en) * | 2019-11-29 | 2020-03-06 | 广东美的制冷设备有限公司 | Fixed-frequency air conditioner and protection method thereof |
| CN112797581A (en) * | 2020-12-30 | 2021-05-14 | Tcl空调器(中山)有限公司 | Air conditioner temperature control method, air conditioner and computer readable storage medium |
| CN114484911A (en) * | 2022-02-24 | 2022-05-13 | 江苏拓米洛环境试验设备有限公司 | Refrigerating system and double-layer one-to-two high-low temperature test box comprising same |
| WO2022247075A1 (en) * | 2021-05-26 | 2022-12-01 | 美的集团股份有限公司 | Refrigerant circulation system, control method therefor, and air conditioner |
-
2008
- 2008-08-01 CN CNU2008200516551U patent/CN201251315Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435026A (en) * | 2011-11-11 | 2012-05-02 | 广东美的电器股份有限公司 | Auxiliary device of multi-connected air conditioner heat pump system |
| CN102435026B (en) * | 2011-11-11 | 2016-08-03 | 美的集团股份有限公司 | A kind of auxiliary device of multi-gang air-conditioner heat pump |
| CN102734990A (en) * | 2012-06-21 | 2012-10-17 | 上海三电冷机有限公司 | Method for reducing exhaust pressure of CO2 compressor at initial startup stage and CO2 refrigerating unit |
| CN105571076A (en) * | 2016-01-20 | 2016-05-11 | 青岛海尔空调电子有限公司 | Control method for refrigerating of water-cooled multi-split air conditioner |
| CN105571076B (en) * | 2016-01-20 | 2019-08-20 | 青岛海尔空调电子有限公司 | A kind of control method of water-cooled multi-connected mechanism cold |
| 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 |
| CN109579296A (en) * | 2017-09-29 | 2019-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of Teat pump boiler unit and its control method |
| CN108679779A (en) * | 2018-05-03 | 2018-10-19 | 广东美的制冷设备有限公司 | Air-conditioner outdoor unit, air conditioner, control method, controller and storage medium |
| CN108679779B (en) * | 2018-05-03 | 2020-06-05 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit, air conditioner, control method, controller and storage medium |
| CN110260553A (en) * | 2019-06-10 | 2019-09-20 | 广东美的制冷设备有限公司 | The control method of air conditioner and air conditioner |
| CN110260553B (en) * | 2019-06-10 | 2021-12-21 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN110864397A (en) * | 2019-11-29 | 2020-03-06 | 广东美的制冷设备有限公司 | Fixed-frequency air conditioner and protection method thereof |
| CN112797581A (en) * | 2020-12-30 | 2021-05-14 | Tcl空调器(中山)有限公司 | Air conditioner temperature control method, air conditioner and computer readable storage medium |
| WO2022247075A1 (en) * | 2021-05-26 | 2022-12-01 | 美的集团股份有限公司 | Refrigerant circulation system, control method therefor, and air conditioner |
| CN114484911A (en) * | 2022-02-24 | 2022-05-13 | 江苏拓米洛环境试验设备有限公司 | Refrigerating system and double-layer one-to-two high-low temperature test box comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG MIDEA REFRIGERATION EQUIPMENT CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20101222 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528311 PENGLAI ROAD, BEIJIAO TOWN, SHUNDE DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE TO: 528311 GONGYE AVENUE, PENGLAI ROAD, BEIJIAO TOWN, SHUNDE DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101222 Address after: 528311 Beijiao, Guangdong, Shunde Town, Penglai Road, Industrial Avenue, Patentee after: Guangdong Midea Refrigeration Equipment Co., Ltd. Address before: 528311 Penglai Road, Beijiao Town, Foshan District, Guangdong, China, Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20130801 |