CN204757488U - It heats device that frosts to postpone air conditioner - Google Patents
It heats device that frosts to postpone air conditioner Download PDFInfo
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- CN204757488U CN204757488U CN201520372480.4U CN201520372480U CN204757488U CN 204757488 U CN204757488 U CN 204757488U CN 201520372480 U CN201520372480 U CN 201520372480U CN 204757488 U CN204757488 U CN 204757488U
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- pipeline
- heat exchanger
- premises station
- expansion valve
- outdoor heat
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Abstract
The utility model relates to an it heats device that frosts to postpone air conditioner is equipped with pressure sensor on the pipeline between four -way reversing valve's third port and vapour and liquid separator's import, off -premises station tube coupling off -premises station stop valve is passed through in the export of outdoor heat exchanger subassembly, and pipe connection between pressure sensor and vapour and liquid separator's the import has branch's pipeline, on branch's pipeline is connected to the off -premises station pipeline, is equipped with pipeline temperature sensor and assists electronic expansion valve on the bleeder way. When detecting that outdoor heat exchanger subassembly surface temperature is low excessively to be leaded to probably frosting, open subsidiary electronic expansion valve to controlling its aperture, can supplying return -air pressure fast, lift system evaporating temperature delays outdoor heat exchanger subassembly surface and frosts.
Description
Technical field
The utility model relates to a kind of device postponing air-conditioning heating frosting, belongs to air-conditioning heating field.
Background technology
Air-conditioning is in heating operations, when ambient temperature is lower, outdoor unit heat exchanger may be caused to evaporate bad, then cause system return air pressure drop, evaporating temperature declines, heat exchanger surface temperature declines, when surface temperature is lower than less than 0 DEG C, heat exchanger surface may frosting gradually, the coefficient of heat transfer of the outdoor heat exchanger that then runs down, evaporating temperature continues to decline, and accelerates frosting.
Utility model content
Based on above-mentioned present Problems existing, technical problem to be solved in the utility model is to provide a kind of device postponing air-conditioning heating frosting, can solve the frosting problem existed in prior art.When detect outdoor heat exchanger surface temperature too low cause may frosting time, back pressure can be supplemented fast, elevator system evaporating temperature; Improve the degree of supercooling of refrigerant in liquid pipe and the uniformity of refrigerant distribution simultaneously, the frosting of outdoor heat exchanger can be delayed, ensure that the heating effect of indoor set.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of device postponing air-conditioning heating frosting, comprise compressor, four-way change-over valve, outdoor heat exchanger assembly, gas-liquid separator, pipeline stop valve and off-premises station stop valve, first port of described four-way change-over valve connects the outlet of described compressor by pipeline, second port of described four-way change-over valve connects described pipeline stop valve by pipeline, 3rd port of described four-way change-over valve connects the import of described gas-liquid separator by pipeline, pipeline between 3rd port and the import of described gas-liquid separator of described four-way change-over valve is provided with pressure sensor, the outlet of described gas-liquid separator connects the import of described compressor by pipeline, 4th port of described four-way change-over valve connects the import of described outdoor heat exchanger assembly by pipeline, the outlet of described outdoor heat exchanger assembly connects described off-premises station stop valve by off-premises station pipeline, described off-premises station pipeline is provided with off-premises station throttle part, pipeline between the import of described pressure sensor and described gas-liquid separator is connected with branch line, described branch line is connected on off-premises station pipeline, described branch line is provided with line temperature sensor and auxiliary electric expansion valve.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described outdoor heat exchanger assembly is evaporimeter.
The beneficial effect of above-mentioned further technical scheme is adopted to be that outdoor heat exchanger assembly can be evaporimeter when air-conditioning system runs heating mode.
Further, described off-premises station throttle part is arranged between the outlet of described outdoor heat exchanger assembly and the junction of described branch line and described off-premises station pipeline.
The beneficial effect of above-mentioned further technical scheme is adopted to be the exit that off-premises station throttle part is arranged near outdoor heat exchanger assembly, adjustment that can be convenient.
Further, on described off-premises station pipeline, between described off-premises station stop valve and the junction of described branch line and described off-premises station pipeline, be provided with auxiliary heat exchanger, described auxiliary heat exchanger is arranged on branch line simultaneously.
Adopt the beneficial effect of above-mentioned further technical scheme to be that an auxiliary heat exchanger arranges on branch line and off-premises station pipeline simultaneously, heat exchange is carried out to two pipelines.
Further, described line temperature sensor is arranged on branch line, described auxiliary heat exchanger near the side of described gas-liquid separator, described auxiliary electric expansion valve is arranged on branch line, described auxiliary heat exchanger is near the side of described off-premises station pipeline.
The beneficial effect adopting above-mentioned further technical scheme is the both sides that line temperature sensor and auxiliary electric expansion valve lay respectively at auxiliary heat exchanger, and the temperature utilizing line temperature sensor to record regulates and controls auxiliary electric expansion valve.
Further, the corresponding saturation temperature of pressure that described pressure sensor detects controls opening or closing of described auxiliary electric expansion valve.
The beneficial effect of above-mentioned further technical scheme is adopted to be heat exchange temperature sensor is not set on outdoor heat exchanger assembly, by arranging the heat transfer temperature difference of outdoor heat exchanger assembly, directly control the switch of auxiliary electric expansion valve by the corresponding saturation temperature of pressure that pressure sensor detects.
Further, when described auxiliary electric expansion valve is opened, the aperture of auxiliary electric expansion valve described in the temperature saturation temperature co-controlling corresponding to the pressure that described pressure sensor detects that described line temperature sensor detects.
Further, heat exchange temperature sensor is provided with in the lower end that described outdoor heat exchanger assembly heat transfer effect is poor.
Further, the temperature that described heat exchange temperature sensor detects controls opening or closing of described auxiliary electric expansion valve.
The beneficial effect of above-mentioned further technical scheme is adopted to be the switch that the temperature detected according to heat exchange temperature sensor directly controls described auxiliary electric expansion valve.
Further, when described auxiliary electric expansion valve is opened, the aperture of auxiliary electric expansion valve described in the temperature saturation temperature co-controlling corresponding to the pressure that described pressure sensor detects that described line temperature sensor detects.
Adopting the beneficial effect of above-mentioned further technical scheme to be the aperture of auxiliary electric expansion valve in two schemes is all that the corresponding saturation temperature of pressure that the temperature and pressure sensor detected by line temperature sensor detects controls.
The beneficial effects of the utility model are: when detect outdoor heat exchanger assembly surface temperature too low cause may frosting time, open auxiliary electric expansion valve, and control its aperture, back pressure can be supplemented fast, elevator system evaporating temperature, delays the frosting of outdoor heat exchanger assembly surface; Improve the degree of supercooling of refrigerant in liquid pipe simultaneously, ensure that the normal work of off-premises station throttle part and distributor, improve the uniformity that refrigerant distributes, also can delay the frosting of outdoor heat exchanger assembly.Above-mentioned 2 heat transfer effects that all ensure that outdoor heat exchanger assembly, improve the comfort level that indoor heats.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation figure.
In accompanying drawing, the list of parts representated by each label is as follows:
11, compressor, 12, four-way change-over valve, 13, outdoor heat exchanger assembly, 14, heat exchange temperature sensor, 15, off-premises station throttle part, 16, auxiliary heat exchanger, 17 auxiliary electric expansion valves, 18, line temperature sensor, 19, pressure sensor, 20, gas-liquid separator, 21, pipeline stop valve, 22, off-premises station stop valve.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of device postponing air-conditioning heating frosting, comprise compressor 11, four-way change-over valve 12, outdoor heat exchanger assembly 13, gas-liquid separator 20, pipeline stop valve 21 and off-premises station stop valve 22, first port of described four-way change-over valve 12 connects the outlet of described compressor 11 by pipeline, second port of described four-way change-over valve 12 connects described pipeline stop valve 21 by pipeline, 3rd port of described four-way change-over valve 12 connects the import of described gas-liquid separator 20 by pipeline, pipeline between 3rd port and the import of described gas-liquid separator 20 of described four-way change-over valve 12 is provided with pressure sensor 19, the outlet of described gas-liquid separator 20 connects the import of described compressor 11 by pipeline, 4th port of described four-way change-over valve 12 connects the import of described outdoor heat exchanger assembly 13 by pipeline, the outlet of described outdoor heat exchanger assembly 13 connects described off-premises station stop valve 22 by off-premises station pipeline, described off-premises station pipeline is provided with off-premises station throttle part 15, pipeline between described pressure sensor 19 and the import of described gas-liquid separator 20 is connected with branch line, described branch line is connected on off-premises station pipeline, described branch line is provided with line temperature sensor 18 and auxiliary electric expansion valve 17.
When air-conditioning system runs heating mode, outdoor heat exchanger assembly 13 can be evaporimeter.
Described off-premises station throttle part 15 is arranged between the outlet of described outdoor heat exchanger assembly 13 and the junction of described branch line and described off-premises station pipeline.Off-premises station throttle part 15 is arranged on the exit near outdoor heat exchanger assembly 13, adjustment that can be convenient.
On described off-premises station pipeline, between described off-premises station stop valve 22 and the junction of described branch line and described off-premises station pipeline, be provided with auxiliary heat exchanger 16, described auxiliary heat exchanger 16 is arranged on branch line simultaneously.An auxiliary heat exchanger 16 arranges on branch line and off-premises station pipeline simultaneously, carries out heat exchange to two pipelines.
Described line temperature sensor 18 is arranged on branch line, described auxiliary heat exchanger 16 near the side of described gas-liquid separator 20, described auxiliary electric expansion valve 17 is arranged on branch line, described auxiliary heat exchanger 16 is near the side of described off-premises station pipeline.Line temperature sensor 18 and auxiliary electric expansion valve 17 lay respectively at the both sides of auxiliary heat exchanger 16, and the temperature utilizing line temperature sensor 18 to record regulates and controls auxiliary electric expansion valve 17.
The utility model also relates to the method using said apparatus to postpone air-conditioning heating frosting, comprises following two modes:
(1) heat exchange temperature sensor 14 is not set on outdoor heat exchanger assembly 13, by arranging the heat transfer temperature difference T2 of outdoor heat exchanger assembly 13, the corresponding saturation temperature Ts of the pressure P that direct pressure sensor 19 detects controls the switch of auxiliary electric expansion valve 17, and the aperture of auxiliary electric expansion valve 17 described in the pressure P corresponding saturation temperature Ts co-controlling that detects of the temperature Tb detected by line temperature sensor 18 and described pressure sensor 19.
Concrete control mode is as follows:
1) as Ts+T2 >=T1, auxiliary electric expansion valve 17 keeps closed condition;
2) as Ts+T2 < T1, auxiliary electric expansion valve 17 is opened, and the aperture of electric expansion valve is controlled by △ T=Tb-Ts >=3 DEG C; Wherein, consider frozen condition, T1 is generally arranged between-1 ~ 1 DEG C; T2 is generally arranged between 3 ~ 8 DEG C according to the heat transfer temperature difference of outdoor heat exchanger assembly 13.
(2) heat exchange temperature sensor 14 is provided with in the lower end that described outdoor heat exchanger assembly 13 heat transfer effect is poor.The switch of described auxiliary electric expansion valve is directly controlled according to the temperature Ta that heat exchange temperature sensor 14 detects, and the aperture of auxiliary electric expansion valve 17 described in the pressure P corresponding saturation temperature Ts co-controlling that detects of the temperature Tb detected by line temperature sensor 18 and described pressure sensor 19.
1) as Ta >=T1, auxiliary electric expansion valve 17 keeps closed condition;
2) as Ta < T1, auxiliary electric expansion valve 17 is opened, and the aperture of electric expansion valve is controlled by △ T=Tb-Ts >=3 DEG C; Wherein, consider frozen condition, T1 is generally arranged between-1 ~ 1 DEG C.
Above two kinds of modes, all can detect outdoor heat exchanger assembly 13 surface temperature too low cause may frosting time, open auxiliary electric expansion valve 17, and control its aperture, back pressure can be supplemented fast, elevator system evaporating temperature, delay the surperficial frosting of outdoor heat exchanger assembly 13, improve the degree of supercooling of refrigerant in liquid pipe simultaneously, ensure that the normal work of off-premises station throttle part 15 and distributor, improve the uniformity that refrigerant distributes, also can delay the frosting of outdoor heat exchanger assembly 13.Above-mentioned 2 heat transfer effects that all ensure that outdoor heat exchanger assembly 13, improve the comfort level that indoor heats.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. one kind postpones the device of air-conditioning heating frosting, it is characterized in that, comprise compressor (11), four-way change-over valve (12), outdoor heat exchanger assembly (13), gas-liquid separator (20), pipeline stop valve (21) and off-premises station stop valve (22), first port of described four-way change-over valve (12) connects the outlet of described compressor (11) by pipeline, second port of described four-way change-over valve (12) connects described pipeline stop valve (21) by pipeline, 3rd port of described four-way change-over valve (12) connects the import of described gas-liquid separator (20) by pipeline, pipeline between 3rd port and the import of described gas-liquid separator (20) of described four-way change-over valve (12) is provided with pressure sensor (19), the outlet of described gas-liquid separator (20) connects the import of described compressor (11) by pipeline, 4th port of described four-way change-over valve (12) connects the import of described outdoor heat exchanger assembly (13) by pipeline, the outlet of described outdoor heat exchanger assembly (13) connects described off-premises station stop valve (22) by off-premises station pipeline, described off-premises station pipeline is provided with off-premises station throttle part (15), pipeline between the import of described pressure sensor (19) and described gas-liquid separator (20) is connected with branch line, described branch line is connected on off-premises station pipeline, described branch line is provided with line temperature sensor (18) and auxiliary electric expansion valve (17).
2. a kind of device postponing air-conditioning heating frosting according to claim 1, it is characterized in that, described outdoor heat exchanger assembly (13) is evaporimeter.
3. a kind of device postponing air-conditioning heating frosting according to claim 1, it is characterized in that, between the outlet that described off-premises station throttle part (15) is arranged on described outdoor heat exchanger assembly (13) and the junction of described branch line and described off-premises station pipeline.
4. a kind of device postponing air-conditioning heating frosting according to claim 1, it is characterized in that, on described off-premises station pipeline, between described off-premises station stop valve (22) and the junction of described branch line and described off-premises station pipeline, be provided with auxiliary heat exchanger (16), described auxiliary heat exchanger (16) is arranged on branch line simultaneously.
5. a kind of device postponing air-conditioning heating frosting according to claim 4, it is characterized in that, described line temperature sensor (18) is arranged on branch line, the side of the close described gas-liquid separator (20) of described auxiliary heat exchanger (16), and described auxiliary electric expansion valve (17) is arranged on branch line, the side of the close described off-premises station pipeline of described auxiliary heat exchanger (16).
6. a kind of device postponing air-conditioning heating frosting according to any one of claim 1 to 5, it is characterized in that, the corresponding saturation temperature of the pressure that described pressure sensor (19) detects controls opening or closing of described auxiliary electric expansion valve (17).
7. a kind of device postponing air-conditioning heating frosting according to claim 6, it is characterized in that, when described auxiliary electric expansion valve (17) is opened, the aperture of auxiliary electric expansion valve (17) described in the pressure corresponding saturation temperature co-controlling that the temperature that described line temperature sensor (18) detects and described pressure sensor (19) detect.
8. a kind of device postponing air-conditioning heating frosting according to any one of claim 1 to 5, is characterized in that, the lower end poor at described outdoor heat exchanger assembly (13) heat transfer effect is provided with heat exchange temperature sensor (14).
9. a kind of device postponing air-conditioning heating frosting according to claim 8, is characterized in that, the temperature that described heat exchange temperature sensor (14) is detected controls opening or closing of described auxiliary electric expansion valve (17).
10. a kind of device postponing air-conditioning heating frosting according to claim 9, it is characterized in that, when described auxiliary electric expansion valve (17) is opened, the aperture of auxiliary electric expansion valve (17) described in the pressure corresponding saturation temperature co-controlling that the temperature that described line temperature sensor (18) detects and described pressure sensor (19) detect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520372480.4U CN204757488U (en) | 2015-06-02 | 2015-06-02 | It heats device that frosts to postpone air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520372480.4U CN204757488U (en) | 2015-06-02 | 2015-06-02 | It heats device that frosts to postpone air conditioner |
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| Publication Number | Publication Date |
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| CN204757488U true CN204757488U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520372480.4U Active CN204757488U (en) | 2015-06-02 | 2015-06-02 | It heats device that frosts to postpone air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766331A (en) * | 2016-12-12 | 2017-05-31 | 广东美的暖通设备有限公司 | Non- reverse defrost multi-connected air conditioning system and air-conditioning |
| CN110440478A (en) * | 2019-08-12 | 2019-11-12 | 广东志高暖通设备股份有限公司 | It is a kind of with the air-conditioning system and its control method that delay frosting function |
| CN110762756A (en) * | 2019-11-01 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Air conditioning system and air conditioning frosting control method |
| CN111664505A (en) * | 2020-06-18 | 2020-09-15 | 宁波奥克斯电气股份有限公司 | Air conditioning device and control method thereof |
| WO2020215787A1 (en) * | 2019-04-26 | 2020-10-29 | 珠海格力电器股份有限公司 | Control method for heat pump system |
| CN113405274A (en) * | 2021-05-28 | 2021-09-17 | 维克（天津）有限公司 | Ultra-low temperature air-cooled module machine system |
-
2015
- 2015-06-02 CN CN201520372480.4U patent/CN204757488U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766331A (en) * | 2016-12-12 | 2017-05-31 | 广东美的暖通设备有限公司 | Non- reverse defrost multi-connected air conditioning system and air-conditioning |
| WO2020215787A1 (en) * | 2019-04-26 | 2020-10-29 | 珠海格力电器股份有限公司 | Control method for heat pump system |
| CN110440478A (en) * | 2019-08-12 | 2019-11-12 | 广东志高暖通设备股份有限公司 | It is a kind of with the air-conditioning system and its control method that delay frosting function |
| CN110762756A (en) * | 2019-11-01 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Air conditioning system and air conditioning frosting control method |
| CN111664505A (en) * | 2020-06-18 | 2020-09-15 | 宁波奥克斯电气股份有限公司 | Air conditioning device and control method thereof |
| CN113405274A (en) * | 2021-05-28 | 2021-09-17 | 维克（天津）有限公司 | Ultra-low temperature air-cooled module machine system |
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| GR01 | Patent grant |