CN219160656U - Screw water source heat pump unit with automatic antifreezing function - Google Patents
Screw water source heat pump unit with automatic antifreezing function Download PDFInfo
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- CN219160656U CN219160656U CN202223119242.1U CN202223119242U CN219160656U CN 219160656 U CN219160656 U CN 219160656U CN 202223119242 U CN202223119242 U CN 202223119242U CN 219160656 U CN219160656 U CN 219160656U
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- temperature collector
- temperature
- condenser
- collector
- flooded evaporator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
The utility model relates to the technical field of water source heat pump units and discloses a screw water source heat pump unit with an automatic antifreezing function, which comprises a flooded evaporator, wherein the flooded evaporator is connected with a screw compressor, the flooded evaporator is connected with a condenser through an expansion valve, and the screw compressor is connected to the condenser through a pipeline; the device also comprises a first temperature collector, a second temperature collector, a third temperature collector, a fourth temperature collector, a fifth temperature collector and a sixth temperature collector. The utility model improves the reliability of the screw water source heat pump unit, and utilizes the measured temperature value of the wall of the heat exchange tube at the special point position of the water side heat exchanger, wherein the special point position of the water side heat exchanger is determined according to the characteristics of the heat exchanger and experimental tests, so that the frost cracking of the flooded evaporator and the condenser heat exchange tube of the screw water source heat pump unit can be effectively prevented.
Description
Technical Field
The utility model relates to the technical field of water source heat pump units, in particular to a screw water source heat pump unit with an automatic antifreezing function.
Background
One of the defects of the screw water source heat pump unit is that when in refrigeration, water flowing in the heat exchange of the evaporator and the condenser and refrigerant exchange heat, if the evaporating temperature and the water temperature are low, the heat exchange tube of the evaporator may be frozen to crack, and the unit is failed, and the other is that the environment temperature is low, and the water in the heat exchange of the evaporator and the condenser is frozen to crack the heat exchange tube.
The utility model relates to a method for preventing frost cracking of heat exchange tubes of an evaporator, which is characterized in that a temperature probe of a water inlet and a water outlet of the evaporator and a condenser is adopted by a side-sampling evaporator of a traditional screw water source heat pump unit to prevent the frost cracking of the heat exchange tubes of the evaporator or the condenser.
Disclosure of Invention
The utility model aims to provide a screw water source heat pump unit with an automatic antifreezing function, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the screw water source heat pump unit with the automatic antifreezing function comprises a flooded evaporator, wherein the flooded evaporator is connected with a screw compressor, the flooded evaporator is connected with a condenser through an expansion valve, and the screw compressor is connected to the condenser through a pipeline;
the system also comprises a first temperature collector, a second temperature collector, a third temperature collector, a fourth temperature collector, a fifth temperature collector and a sixth temperature collector;
the first temperature collector is arranged at the water outlet of the flooded evaporator, the second temperature collector is arranged at the water outlet of the condenser, the third temperature collector is arranged at one side of the heat exchange tube of the flooded evaporator, the sixth temperature collector is arranged at the other side of the heat exchange tube of the flooded evaporator, the fourth temperature collector is arranged at one side of the heat exchange tube of the condenser, and the fifth temperature collector is arranged at the other side of the heat exchange tube of the condenser.
As a preferred embodiment of the utility model, the first temperature collector, the second temperature collector, the third temperature collector, the fourth temperature collector, the fifth temperature collector and the sixth temperature collector are all temperature sensors.
As a preferred implementation mode of the utility model, the screw compressor further comprises a control cabinet, wherein the signal output ends of the first temperature collector, the second temperature collector, the third temperature collector, the fourth temperature collector, the fifth temperature collector and the sixth temperature collector are all connected with the signal input end of the control cabinet, and the signal output end of the control cabinet is connected with the signal input end of the screw compressor.
In a preferred embodiment of the present utility model, the heat exchange tubes of the flooded evaporator and the condenser are provided with coolant water on the inner side and refrigerant on the outer side.
Compared with the prior art, the utility model provides the screw water source heat pump unit with the automatic antifreezing function, which has the following beneficial effects:
1. the utility model improves the reliability of the screw water source heat pump unit, and the utility model utilizes the temperature value of the pipe wall of the heat exchange pipe for measuring the special point position of the water side heat exchanger, wherein the special point position of the water side heat exchanger is determined according to the characteristics of the heat exchanger and experimental tests, thereby effectively preventing the flooded evaporator and the condenser heat exchange pipe of the screw water source heat pump unit from freezing and cracking.
2. Comparing a plurality of temperature values of the wall of the heat exchange tube at different points of the water side heat exchanger and the temperature value of the outlet of the water tube with preset temperature protection values corresponding to all positions respectively; the frost crack of the heat exchange pipes of the flooded evaporator and the condenser can be prevented, and the frost crack of the water pipeline outside the unit can be prevented, so that the reliability and stability of the air conditioning system in winter or summer are improved.
3. The refrigerating and heating operation range is enlarged: comparing a plurality of temperature values of different points of the water side heat exchanger and the temperature value of the water pipe outlet with preset temperature protection values corresponding to all positions respectively; when a certain temperature value is smaller than or equal to a preset temperature protection value corresponding to the position, the unit sends out a command for prompting faults.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
fig. 1 is an overall schematic diagram of a screw water source heat pump unit with an automatic antifreezing function.
In the figure: 1. a screw compressor; 2. flooded evaporation; 3. a condenser; 4. a control cabinet; 5. a first temperature collector; 6. a second temperature collector; 7. a third temperature collector; 8. a temperature collector IV; 9. a temperature collector V; 10. and a temperature collector six.
Detailed Description
In order to better understand the purpose, structure and function of the utility model, the screw water source heat pump unit with the automatic antifreezing function is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the present utility model provides a technical solution: the screw water source heat pump unit with the automatic antifreezing function comprises a flooded evaporator 2, wherein the flooded evaporator 2 is connected with a screw compressor 1, the flooded evaporator 2 is connected with a condenser 3 through an expansion valve, and the screw compressor 1 is connected to the condenser 3 through a pipeline;
the flooded evaporator 2 can improve the heat exchange efficiency of the unit,
the system also comprises a first temperature collector 5, a second temperature collector 6, a third temperature collector 7, a fourth temperature collector 8, a fifth temperature collector 9 and a sixth temperature collector 10;
the first temperature collector 5 is arranged at the water outlet of the flooded evaporator 2, the second temperature collector 6 is arranged at the water outlet of the condenser 3, the third temperature collector 7 is arranged at one side of the heat exchange tube of the flooded evaporator 2, can sense the wall temperature of the heat exchange tube of the flooded evaporator 2, the sixth temperature collector 10 is arranged at the other side of the heat exchange tube of the flooded evaporator 2, can sense the wall temperature of the heat exchange tube of the flooded evaporator 2, the fourth temperature collector 8 is arranged at one side of the heat exchange tube of the condenser 3, can sense the wall temperature of the heat exchange tube of the condenser 3, and the fifth temperature collector 9 is arranged at the other side of the heat exchange tube of the condenser 3, and can sense the wall temperature of the heat exchange tube of the condenser 3.
In this embodiment, the first temperature collector 5, the second temperature collector 6, the third temperature collector 7, the fourth temperature collector 8, the fifth temperature collector 9 and the sixth temperature collector 10 are all temperature sensors.
In this embodiment, still include switch board 4, temperature collector one 5, temperature collector two 6, temperature collector three 7, temperature collector four 8, temperature collector five 9, temperature collector six 10's signal output part is connected with the signal input part of switch board 4, the signal output part of switch board 4 is connected with the signal input part of screw compressor 1.
In this embodiment, the inner side of the heat exchange tube of the flooded evaporator 2 and the condenser 3 is provided with coolant water, and the outer side is provided with refrigerant.
Working principle: when the water source heat pump unit operates, water flows in the heat exchange tube of the water side heat exchanger. The temperature collector I5 is arranged at the water outlet of the flooded evaporator 2, the temperature collector II 6 is arranged at the water outlet of the condenser, the temperature collector III 7 is arranged at a special point position of the flooded evaporator 2, the temperature of the wall of the heat exchange tube of the flooded evaporator 2 can be sensed, the temperature collector VI 10 is arranged at another special point position of the flooded evaporator 2, the temperature of the wall of the heat exchange tube of the flooded evaporator 2 can be sensed, the temperature collector IV 8 is arranged at a special point position of the condenser 3, the temperature of the wall of the heat exchange tube of the condenser 3 can be sensed, the temperature collector V9 is arranged at another special point position of the condenser 3, the temperature of the wall of the heat exchange tube of the condenser 3 can be sensed, and a plurality of temperature values of different points of the water side heat exchangers and the temperature value of the water outlet of the water pipe are respectively compared with preset temperature protection values corresponding to all the position points; when a certain temperature value is smaller than or equal to a preset temperature protection value corresponding to the position in a plurality of temperature values of the wall of the heat exchange tube of the water side heat exchanger and the temperature value of the outlet of the water tube, the unit sends a command for prompting faults, and the unit immediately adjusts the running state or gives an alarm to stop.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. The utility model provides a take screw rod water source heat pump unit of automatic function of preventing frostbite which characterized in that: the system comprises a flooded evaporator, wherein the flooded evaporator is connected with a screw compressor, the flooded evaporator is connected with a condenser through an expansion valve, and the screw compressor is connected with the condenser through a pipeline;
the system also comprises a first temperature collector, a second temperature collector, a third temperature collector, a fourth temperature collector, a fifth temperature collector and a sixth temperature collector;
the first temperature collector is arranged at the water outlet of the flooded evaporator, the second temperature collector is arranged at the water outlet of the condenser, the third temperature collector is arranged at one side of the heat exchange tube of the flooded evaporator, the sixth temperature collector is arranged at the other side of the heat exchange tube of the flooded evaporator, the fourth temperature collector is arranged at one side of the heat exchange tube of the condenser, and the fifth temperature collector is arranged at the other side of the heat exchange tube of the condenser.
2. The screw water source heat pump unit with the automatic antifreezing function according to claim 1, wherein: the first temperature collector, the second temperature collector, the third temperature collector, the fourth temperature collector, the fifth temperature collector and the sixth temperature collector are temperature sensors.
3. The screw water source heat pump unit with the automatic antifreezing function according to claim 1, wherein: the temperature control device further comprises a control cabinet, wherein the signal output ends of the first temperature collector, the second temperature collector, the third temperature collector, the fourth temperature collector, the fifth temperature collector and the sixth temperature collector are connected with the signal input end of the control cabinet, and the signal output end of the control cabinet is connected with the signal input end of the screw compressor.
4. The screw water source heat pump unit with the automatic antifreezing function according to claim 1, wherein: the inner side of the heat exchange tube of the flooded evaporator and the condenser is provided with secondary refrigerant water, and the outer side is provided with refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223119242.1U CN219160656U (en) | 2022-11-23 | 2022-11-23 | Screw water source heat pump unit with automatic antifreezing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223119242.1U CN219160656U (en) | 2022-11-23 | 2022-11-23 | Screw water source heat pump unit with automatic antifreezing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219160656U true CN219160656U (en) | 2023-06-09 |
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ID=86645367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223119242.1U Active CN219160656U (en) | 2022-11-23 | 2022-11-23 | Screw water source heat pump unit with automatic antifreezing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219160656U (en) |
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2022
- 2022-11-23 CN CN202223119242.1U patent/CN219160656U/en active Active
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