CN205192013U - Anti-freezing control device and cold and hot water unit - Google Patents
Anti-freezing control device and cold and hot water unit Download PDFInfo
- Publication number
- CN205192013U CN205192013U CN201520213149.8U CN201520213149U CN205192013U CN 205192013 U CN205192013 U CN 205192013U CN 201520213149 U CN201520213149 U CN 201520213149U CN 205192013 U CN205192013 U CN 205192013U
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- temperature
- pressure
- control device
- evaporimeter
- detecting device
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Links
- 238000007710 freezing Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims abstract description 34
- 230000008014 freezing Effects 0.000 claims abstract description 28
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000008676 import Effects 0.000 abstract description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model provides a freeze-proof controlling means and hot and cold water unit. According to the utility model discloses a hot and cold water unit freeze-proof control device, include: the first temperature detection device is used for detecting the refrigerant inlet temperature T1 of the evaporator; second temperature detection means for detecting a compressor suction temperature T2; the pressure detection device is used for detecting the pressure P at any one of the air suction port of the compressor, the refrigerant inlet of the evaporator and the refrigerant outlet of the evaporator; and the control device is used for judging that the evaporator has the freezing risk if T1 is less than 0 ℃ and T2 is less than 0 ℃ or the pressure P is less than the preset pressure P1 in continuous second preset time after the refrigeration starting operation is carried out for the first preset time. The utility model discloses a detect refrigerant import temperature, the compressor temperature of breathing in and refrigerant pressure P of evaporimeter, jointly judge whether the evaporimeter has the risk of freezing to the heat exchanger that probably appears when avoiding unit refrigeration operation freezes the problem.
Description
Technical field
The utility model relates to water chiller-heater unit field, in particular to a kind of freezing protection control device and water chiller-heater unit.
Background technology
Cold/heat is passed in recirculated water by water-fluorine heat exchanger by water chiller-heater unit, and then is delivered to user side realized refrigeration/heating function by water pump circulation.During unit operation, if improper use very easily causes evaporation side heat exchanger Inner eycle, water freezes at short notice and causes heat exchanger external shell or the bursting by freezing of internal heat pipeline, cause system failure even fluorine system water inlet and cause the miscellaneous part such as compressor to damage further, impact greatly.The many water inlet pipe and water outlet pipes by detecting heat exchanger of current technology, turnover refrigerant pipe judge whether heat exchanger water side exists and freeze risk, but cannot ensure accurately to judge and there is erroneous judgement and affect the problem that user uses.
Utility model content
The utility model aims to provide a kind of freezing protection control device and the water chiller-heater unit that improve reliability.
The utility model provides a kind of water chiller-heater unit freezing protection control device, comprising: the first temperature-detecting device, is arranged in the refrigerant inlet ductwork of evaporimeter; Second temperature-detecting device, is arranged in the suction line of compressor; Pressure-detecting device, be arranged on arbitrary in the suction line of compressor, the refrigerant inlet ductwork of evaporimeter and the refrigerant exit pipeline of evaporimeter on; Control device, is connected with the first temperature-detecting device, the second temperature-detecting device and pressure-detecting device.
Further, pressure-detecting device is pressure switch.
The utility model additionally provides a kind of water chiller-heater unit freezing protection control device, comprise the first temperature-detecting device, be arranged in the refrigerant inlet ductwork of evaporimeter, freezing protection control device also comprises the second temperature-detecting device, be arranged in the suction line of compressor, or also comprise pressure-detecting device, be arranged on arbitrary in the suction line of compressor, the refrigerant inlet ductwork of evaporimeter and the refrigerant exit pipeline of evaporimeter on; Control device, is connected with the first temperature-detecting device, the second temperature-detecting device and pressure-detecting device.
The utility model additionally provides a kind of water chiller-heater unit, comprises aforesaid freezing protection control device.
According to freezing protection control device of the present utility model and water chiller-heater unit; by detecting the ice-forming processes outside pipes of evaporimeter, compressor air suction temperature and refrigerant pressure P; combine and judge whether evaporimeter has and freeze risk; thus the heat exchanger frozen problem that may occur when avoiding unit refrigerating operaton; avoid unit protection by mistake simultaneously, improve the stable operation of Reliability Assurance unit safety.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic according to water chiller-heater unit freezing protection control device of the present utility model;
Fig. 2 is the principle schematic according to water chiller-heater unit of the present utility model.
Description of reference numerals:
1, evaporimeter; 2, compressor; 3, the first temperature-detecting device; 4, the second temperature-detecting device; 5, pressure-detecting device.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Composition graphs 1 and Fig. 2 illustrate the first embodiment of the freezing protection control device that the utility model provides, in this embodiment, freezing protection control device comprises: the first temperature-detecting device 3, is arranged in the refrigerant inlet ductwork of evaporimeter, for detecting the ice-forming processes outside pipes T1 of evaporimeter 1; Second temperature-detecting device 4, is arranged in the suction line of compressor, for detecting compressor 2 suction temperature T2; Pressure-detecting device 5, be arranged on arbitrary in the suction line of described compressor, the refrigerant inlet ductwork of described evaporimeter and the refrigerant exit pipeline of described evaporimeter on, for detect the air entry of compressor, the refrigerant import of evaporimeter and evaporimeter refrigerant exit three place in the pressure P at arbitrary place; Control device, be connected with described first temperature-detecting device, described second temperature-detecting device and described pressure-detecting device, for after refrigeration starts shooting operation first Preset Time, if T1 < 0 DEG C in continuous second Preset Time, and T2 < 0 DEG C or pressure P < preset pressure P1, then judge that evaporimeter has and freeze risk.The utility model is by detecting the ice-forming processes outside pipes of evaporimeter, compressor air suction temperature and refrigerant pressure P; combine and judge whether evaporimeter has and freeze risk; thus the heat exchanger frozen problem that may occur when avoiding unit refrigerating operaton; avoid unit protection by mistake simultaneously, improve the stable operation of Reliability Assurance unit safety.
Usually, the first temperature-detecting device 3 and the second temperature-detecting device 4 adopt temperature sensor.Pressure-detecting device 5 adopts pressure switch, and as pressure P < preset pressure P1, pressure switch is closed.Control device is the control mainboard of unit, and the first temperature-detecting device 3, second temperature-detecting device 4 and pressure-detecting device 5 are all connected with control mainboard.
After judgement evaporimeter has and freezes risk, the corresponding action device that avoids evaporating can be adopted to freeze, and such as close compressor also reports fault.Preferably, in order to improve reliability further, preset pressure P1 is generally-5 DEG C to-10 DEG C corresponding refrigerant saturation pressure force value.First Preset Time is generally 1min to 4min, namely ensures that unit reliably starts, and after stable operation, then start to detect judgement; Second Preset Time is 20s to 60s, and the second Preset Time is too short, likely occurs erroneous judgement, and cause protection by mistake, the second Preset Time is long, likely occurs responding slow and causing freezing.Thus, the second suitable Preset Time is set, protection by mistake can be avoided, improve reliability.Preferably, the second Preset Time is 30s.
In the second embodiment of water chiller-heater unit freezing protection control device of the present utility model, with the first embodiment unlike, in a second embodiment, freezing protection control device comprises: the first temperature-detecting device 3, be arranged in the refrigerant inlet ductwork of evaporimeter, for detecting the ice-forming processes outside pipes T1 of evaporimeter; Second temperature-detecting device 4, is arranged in the suction line of compressor, for detecting compressor air suction temperature T2; Control device, be connected with described first temperature-detecting device, described second temperature-detecting device and described pressure-detecting device, for after refrigeration starts shooting operation first Preset Time, if T1 < 0 DEG C in continuous second Preset Time and T2 < 0 DEG C, then judge that evaporimeter has and freeze risk.Namely judge whether to have by detection ice-forming processes outside pipes T1 and compressor air suction temperature T2 temperature and freeze risk; avoid the heat exchanger frozen problem that may occur during unit refrigerating operaton; avoid unit protection by mistake simultaneously, improve the stable operation of Reliability Assurance unit safety.In a second embodiment, the first Preset Time and the second Preset Time, and arrange identical in the first embodiment, repeat no more.
In the 3rd embodiment of water chiller-heater unit freezing protection control device of the present utility model, with the first embodiment unlike, in the third embodiment, freezing protection control device comprises: the first temperature-detecting device 3, be arranged in the refrigerant inlet ductwork of evaporimeter, for detecting the ice-forming processes outside pipes T1 of evaporimeter; Pressure-detecting device 5, be arranged on arbitrary in the suction line of described compressor, the refrigerant inlet ductwork of described evaporimeter and the refrigerant exit pipeline of described evaporimeter on, for detect the air entry of compressor, the refrigerant import of evaporimeter and evaporimeter refrigerant exit three place in the pressure P at arbitrary place; Control device, for when after refrigeration start operation first Preset Time, if T1 < 0 DEG C and pressure P < preset pressure P1 in continuous second Preset Time, then judges that evaporimeter has and freezes risk.Namely combined by ice-forming processes outside pipes and refrigerant pressure P and judge whether evaporimeter has and freeze risk, thus the heat exchanger frozen problem that may occur when avoiding unit refrigerating operaton, avoid unit protection by mistake simultaneously, improve the stable operation of Reliability Assurance unit safety.In the third embodiment, optimum configurations is identical in the first embodiment, repeats no more.
The utility model additionally provides a kind of water chiller-heater unit, comprises aforesaid freezing protection control device, thus ensures that unit reliability runs.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to freezing protection control device of the present utility model and water chiller-heater unit; by detecting the ice-forming processes outside pipes of evaporimeter, compressor air suction temperature or refrigerant pressure P; combine and judge whether evaporimeter has and freeze risk; thus the heat exchanger frozen problem that may occur when avoiding unit refrigerating operaton; avoid unit protection by mistake simultaneously; improve reliability, ensure unit safety stable operation.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.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 (4)
1. a water chiller-heater unit freezing protection control device, is characterized in that, comprising:
First temperature-detecting device, is arranged in the refrigerant inlet ductwork of evaporimeter;
Second temperature-detecting device, is arranged in the suction line of compressor;
Pressure-detecting device, be arranged on arbitrary in the suction line of described compressor, the refrigerant inlet ductwork of described evaporimeter and the refrigerant exit pipeline of described evaporimeter on;
Control device, is connected with described first temperature-detecting device, described second temperature-detecting device and described pressure-detecting device.
2. water chiller-heater unit freezing protection control device according to claim 1, is characterized in that,
Described pressure-detecting device is pressure switch.
3. a water chiller-heater unit freezing protection control device, it is characterized in that, comprise the first temperature-detecting device, be arranged in the refrigerant inlet ductwork of evaporimeter, described freezing protection control device also comprises the second temperature-detecting device, be arranged in the suction line of compressor, or also comprise pressure-detecting device, be arranged on arbitrary in the suction line of described compressor, the refrigerant inlet ductwork of described evaporimeter and the refrigerant exit pipeline of described evaporimeter on;
Control device, is connected with described first temperature-detecting device, described second temperature-detecting device and described pressure-detecting device.
4. a water chiller-heater unit, comprises freezing protection control device, it is characterized in that, the freezing protection control device of described freezing protection control device according to any one of claim 1 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520213149.8U CN205192013U (en) | 2015-04-09 | 2015-04-09 | Anti-freezing control device and cold and hot water unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520213149.8U CN205192013U (en) | 2015-04-09 | 2015-04-09 | Anti-freezing control device and cold and hot water unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192013U true CN205192013U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520213149.8U Expired - Fee Related CN205192013U (en) | 2015-04-09 | 2015-04-09 | Anti-freezing control device and cold and hot water unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205192013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360711A (en) * | 2019-07-23 | 2019-10-22 | 珠海格力电器股份有限公司 | Air conditioner anti-freezing method, air conditioner and computer readable storage medium |
| CN111780361A (en) * | 2020-06-30 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner |
-
2015
- 2015-04-09 CN CN201520213149.8U patent/CN205192013U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360711A (en) * | 2019-07-23 | 2019-10-22 | 珠海格力电器股份有限公司 | Air conditioner anti-freezing method, air conditioner and computer readable storage medium |
| CN111780361A (en) * | 2020-06-30 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner |
| CN111780361B (en) * | 2020-06-30 | 2021-12-03 | 海信（山东）空调有限公司 | Air conditioner |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20210409 |
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| CF01 | Termination of patent right due to non-payment of annual fee |