CN214406598U - Anti-freezing system of heat pump cold and hot water unit - Google Patents
Anti-freezing system of heat pump cold and hot water unit Download PDFInfo
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- CN214406598U CN214406598U CN202120415618.XU CN202120415618U CN214406598U CN 214406598 U CN214406598 U CN 214406598U CN 202120415618 U CN202120415618 U CN 202120415618U CN 214406598 U CN214406598 U CN 214406598U
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- air compressor
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Abstract
The utility model relates to a heat pump hot and cold water unit technical field that prevents frostbite specifically indicates heat pump hot and cold water unit system that prevents frostbite, including heat pump hot and cold water interchanger, the air compressor unit, evaporimeter unit and heat pump logic controller, heat pump hot and cold water interchanger, the air compressor unit, through refrigerant pipe connection between the evaporimeter unit, heat pump hot and cold water interchanger's refrigerant exit linkage is in the refrigerant entry of evaporimeter unit, the refrigerant exit linkage of evaporimeter in the refrigerant entry of air compressor unit, the refrigerant exit linkage of air compressor unit in heat pump hot and cold water interchanger's refrigerant entry, install temperature sensor on the refrigerant pipeline of heat pump hot and cold water interchanger's refrigerant entrance, heat pump logic controller and temperature sensor, air compressor unit communication is connected. The utility model discloses a control logic can increase the stability of system operation, reduces because of the heat exchanger problem of freezing that equipment hydrologic cycle problem and cross valve switching failure lead to, has reduced inconvenience and economic loss because of equipment trouble brings for the customer.
Description
Technical Field
The utility model relates to a heat pump hot and cold water unit technical field that prevents frostbite specifically indicates heat pump hot and cold water unit system of preventing frostbite.
Background
With the increasing requirements of the country on environmental protection, energy conservation and emission reduction, under the promotion of policies in most regions of China, heat pump technology products such as air, water sources and water-consuming sources are installed and used in large areas to replace polluted equipment such as boilers, and the like, and in the using process, the current products basically have anti-freezing control by technical means such as water flow detection and water outlet temperature detection, but in the actual use, because a water flow switch has a certain mechanical range, the problem that the flow required by a heat pump cannot be met in a protection range exists; in addition, the water flow switch can be mechanically failed due to extreme cold, the outlet water temperature is inconsistent with the actual local temperature of the heat exchanger due to the problems of uneven water flow in the heat exchanger and the like in the outlet water temperature detection, so that the heat exchanger is frozen in the still process, and great inconvenience and economic loss are brought to users.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the defect of above-mentioned technique, provide heat pump hot and cold water unit anti-freezing system.
The anti-freezing system of the heat pump cold and hot water unit comprises a heat pump cold and hot water exchanger, an air compressor unit, an evaporator unit and a heat pump logic controller, wherein the heat pump cold and hot water exchanger, the air compressor unit and the evaporator unit are connected through a refrigerant pipeline, a refrigerant outlet of the heat pump cold and hot water exchanger is connected to a refrigerant inlet of the evaporator unit, a refrigerant outlet of the evaporator is connected to a refrigerant inlet of the air compressor unit, a refrigerant outlet of the air compressor unit is connected to a refrigerant inlet of the heat pump cold and hot water exchanger, a temperature sensor is installed on a refrigerant pipeline at a refrigerant inlet of the heat pump cold and hot water exchanger, the heat pump logic controller is in communication connection with the temperature sensor and the air compressor unit, and the heat pump logic controller controls the working state of the air compressor unit according to monitoring information of the temperature sensor.
Furthermore, a throttle valve is arranged on a refrigerant pipeline between a refrigerant outlet of the heat pump cold and hot water exchanger and a refrigerant inlet of the evaporator unit.
The utility model discloses the advantage: the control logic of the utility model can increase the stability of system operation, reduce the problem of heat exchanger freezing caused by equipment water circulation and four-way valve switching failure, and reduce inconvenience and economic loss caused by equipment failure for customers; the utility model directly monitors the temperature of the refrigerant inlet of the heat pump cold and hot water exchanger without detecting water flow and water temperature, thereby avoiding the problem that the flow required by the heat pump cannot be met in the protection range of the flow switch in the water flow detection and the problem that the mechanical failure of the flow switch is possibly caused by extreme cold; the problem that the water outlet temperature is not consistent with the actual local temperature of the heat pump cold and hot water exchanger due to the fact that the water flow in the heat pump cold and hot water exchanger is not uniform in the water outlet temperature detection and the like, and the heat pump cold and hot water exchanger still freezes is solved.
Drawings
Fig. 1 is a schematic diagram of the antifreeze system of the heat pump chiller-heater unit of the present invention.
As shown in the figure: 1. a heat pump cold and hot water exchanger; 2. an air compressor unit; 3. an evaporator unit; 4. a logic controller; 5. a refrigerant pipe; 6. a temperature sensor; 7. a throttle valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The anti-freezing system of the heat pump cold and hot water unit comprises a heat pump cold and hot water exchanger 1, an air compressor unit 2, an evaporator unit 3 and a heat pump logic controller 4, the heat pump cold and hot water exchanger 1, the air compressor unit 2 and the evaporator unit 3 are connected through a refrigerant pipeline 5, the refrigerant outlet of the heat pump cold and hot water exchanger 1 is connected with the refrigerant inlet of the evaporator unit 3, the refrigerant outlet of the evaporator 3 is connected with the refrigerant inlet of the air compressor unit 2, a refrigerant outlet of the air compressor unit 2 is connected with a refrigerant inlet of the heat pump cold and hot water exchanger 1, a temperature sensor 6 is arranged on a refrigerant pipeline 5 at the refrigerant inlet of the heat pump cold and hot water exchanger 1, the heat pump logic controller 4 is in communication connection with the temperature sensor 6 and the air compressor unit 2, and the heat pump logic controller 4 controls the working state of the air compressor unit 2 according to monitoring information of the temperature sensor 6.
And a throttle valve 7 is arranged on a refrigerant pipeline 5 between a refrigerant outlet of the heat pump cold and hot water exchanger 1 and a refrigerant inlet of the evaporator unit 3.
The utility model discloses when specifically using, explain according to following concentrated condition:
1. when the heat pump is in heating operation, after the compressor unit is started for 60 seconds, the temperature sensor detects the temperature of a refrigerant inlet of the heat pump cold and hot water exchanger, if the temperature is more than or equal to 0 ℃, the whole equipment normally operates, and if the temperature is less than 0 ℃, the compressor unit stops operating and gives an alarm;
2. when a defrosting function is executed in the heating process of the heat pump, after the compressor unit is started for 20 seconds, the temperature sensor detects the temperature of a refrigerant inlet of a heat pump cold and hot water exchanger, if the temperature is more than or equal to 0 ℃, the whole equipment normally operates, and if the temperature is less than 0 ℃, the compressor unit stops operating and gives an alarm;
3. when the heat pump operates in a refrigerating mode, the temperature sensor detects the temperature of a refrigerant inlet of the heat pump cold and hot water exchanger, if the temperature is larger than or equal to 0 ℃, the air compressor unit is allowed to operate, and if the temperature is smaller than 0 ℃, the compressor unit is forbidden to be started and gives an alarm.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (2)
1. The heat pump hot and cold water unit anti-freezing system is characterized in that: the heat pump system comprises a heat pump cold and hot water exchanger (1), an air compressor unit (2), an evaporator unit (3) and a heat pump logic controller (4), wherein the heat pump cold and hot water exchanger (1), the air compressor unit (2) and the evaporator unit (3) are connected through a refrigerant pipeline (5), a refrigerant outlet of the heat pump cold and hot water exchanger (1) is connected to a refrigerant inlet of the evaporator unit (3), a refrigerant outlet of the evaporator unit (3) is connected to a refrigerant inlet of the air compressor unit (2), a refrigerant outlet of the air compressor unit (2) is connected to a refrigerant inlet of the heat pump cold and hot water exchanger (1), a temperature sensor (6) is installed on the refrigerant pipeline (5) at the refrigerant inlet of the heat pump cold and hot water exchanger (1), and the heat pump logic controller (4) is in communication connection with the temperature sensor (6) and the air compressor unit (2), and the heat pump logic controller (4) controls the working state of the air compressor unit (2) according to the monitoring information of the temperature sensor (6).
2. The heat pump chiller/heater unit antifreeze system of claim 1, wherein: and a throttle valve (7) is arranged on a refrigerant pipeline (5) between a refrigerant outlet of the heat pump cold and hot water exchanger (1) and a refrigerant inlet of the evaporator unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120415618.XU CN214406598U (en) | 2021-02-25 | 2021-02-25 | Anti-freezing system of heat pump cold and hot water unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120415618.XU CN214406598U (en) | 2021-02-25 | 2021-02-25 | Anti-freezing system of heat pump cold and hot water unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214406598U true CN214406598U (en) | 2021-10-15 |
Family
ID=78026499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120415618.XU Active CN214406598U (en) | 2021-02-25 | 2021-02-25 | Anti-freezing system of heat pump cold and hot water unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214406598U (en) |
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2021
- 2021-02-25 CN CN202120415618.XU patent/CN214406598U/en active Active
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