CN216592145U - Intelligent anti-freezing device for heat exchanger of air conditioning unit - Google Patents
Intelligent anti-freezing device for heat exchanger of air conditioning unit Download PDFInfo
- Publication number
- CN216592145U CN216592145U CN202123314573.6U CN202123314573U CN216592145U CN 216592145 U CN216592145 U CN 216592145U CN 202123314573 U CN202123314573 U CN 202123314573U CN 216592145 U CN216592145 U CN 216592145U
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- Prior art keywords
- water
- air conditioning
- pipeline
- heat exchanger
- conditioning unit
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 37
- 238000007710 freezing Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 230000002528 anti-freeze Effects 0.000 claims 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model relates to an air conditioning unit heat exchanger intelligence freeze-proof device. At present, the outdoor temperature is low in winter in the north, and the surfaces of a fresh air preheating device and a heat exchanger finned tube in an air conditioning unit can be frosted frequently. An intelligent anti-freezing device for a heat exchanger of an air conditioning unit comprises the following components: electric cabinet (1), go up pipeline (2) and lower pipeline (3), install pipe bracket (4) in the electric cabinet, it is parallel structure and pipe bracket fixed connection with lower pipeline to go up the pipeline, it is serial structure and is connected with water supply flowmeter (5) respectively to go up the pipeline, filter (6), motorised valve (7), water supply temperature sensor (8) and inlet water manometer (9) to be serial structure, lower pipeline is serial structure and is connected with motorised ball valve A (10) respectively, check valve (11), circulating pump (12), motorised ball valve B (13), return water temperature sensor (14) and return water manometer (15) series connection. The utility model discloses be applied to the air conditioner heat transfer field.
Description
Technical Field
The utility model relates to an air conditioning unit heat exchanger intelligence freeze-proof device.
Background
At present, due to the fact that outdoor temperature in winter in the north is low, the surfaces of finned tubes of heat exchangers in a fresh air preheating device and an air conditioning unit can be frosted frequently, even the finned tubes are frozen, the fresh air preheating device and the air conditioning unit cannot work normally, and the coiled tubes in the air conditioning unit are frozen.
Disclosure of Invention
The utility model aims at providing an air conditioning unit heat exchanger intelligence freeze-proof device.
The above purpose is realized by the following technical scheme:
an intelligent anti-freezing device for a heat exchanger of an air conditioning unit comprises the following components: the electric control box is internally provided with a pipeline support, the upper pipeline and the lower pipeline are in a parallel structure and are fixedly connected with the pipeline support, the upper pipeline is in a series structure and is respectively connected with a water supply flowmeter, a filter, an electric valve, a water supply temperature sensor and a water supply inlet pressure gauge, the lower pipeline is in a series structure and is respectively connected with an electric ball valve A, a check valve, a circulating pump, an electric ball valve B, a water return temperature sensor and a water return inlet pressure gauge in series, and the lower pipeline is connected with a bypass electric ball valve in a parallel structure;
the two ends of the upper pipeline are respectively connected with a water outlet and a water supply port, the water outlet is connected with a water supply pipe of an air conditioning system, and the water supply port is connected with a water inlet pipe of a heat exchanger;
the two ends of the lower pipeline are respectively connected with a water inlet and a water return port, the water inlet is connected with a heat exchanger water return pipe, and the water return port is connected with an air conditioning system water return pipe.
The intelligent anti-freezing device for the heat exchanger of the air conditioning unit is characterized in that a control panel of the electric cabinet is respectively connected with a control screen, a buzzer and an emergency stop button.
The bottom of the electric cabinet is connected with the base.
The intelligent anti-freezing device of the air conditioning unit heat exchanger is characterized in that the electric cabinet is connected with the cabinet door.
The utility model discloses the beneficial effect who reaches is:
1. the utility model has the characteristics of simple structure, convenient operation etc, utilize the circulating pump to carry out the pressure boost circulation to the fluid in the surface cooler in the air conditioning unit for the surface cooler can release more heats, thereby prevents that the heat exchanger from freezing and splitting, guarantees fresh air preheating device and air conditioning unit's normal operating.
2. The utility model has the advantages of it is following:
(1) the air inlet temperature sensor of the fresh air conditioning unit detects that the air inlet temperature is lower than a set value, the anti-freezing unit is started, and the circulating pump can work in a variable frequency mode.
(2) And intelligently detecting whether the surface of the heat exchanger is frosted, starting a protection program when the temperatures of the air inlet side and the air outlet side of the heat exchanger are still lower than the water supply solidification temperature under the maximum operation rechecking state of the circulating pump, keeping the maximum load operation of the unit, and reporting a signal to a central control system or a fresh air control system, so that a fresh air system is closed, and a fresh air valve is closed.
(3) The system can intelligently judge whether the heat exchanger has leakage points or internal blockage conditions according to the temperature difference and the pressure difference of inlet and outlet water.
(4) The system can realize intelligent protection control, and when the frequency converter breaks down, the system switches power frequency to operate the water pump.
(5) When the circulating pump breaks down, the system automatically cuts off the pump pipeline, closes the valve 11, opens the valve 21, starts the bypass pipeline for emergency, and reports a circulating pump fault signal to the central control system or the fresh air control system.
(6) The central control system or the fresh air handling unit control system can monitor the running state of the anti-freezing unit through a field bus and realize remote control.
(7) The alarm signal can be sent to a fresh air control system and a central control system.
(8) The unit can display the fresh air preheating effect through the real-time monitoring of the temperature of the supply water and the return water and the temperature of the air inlet side and the air outlet side of the heat exchanger.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a left side view of FIG. 2;
FIG. 5 is a schematic view of a connection tube of the heat exchanger;
FIG. 6 is a schematic view of the connection of a heat exchanger to an air conditioning unit;
in the figure: 1. an electric cabinet, 2, an upper pipeline, 3, a lower pipeline, 4, a pipeline bracket, 5, a water supply flowmeter, 6, a filter, 7, an electric valve, 8, a water supply temperature sensor, 9, a water supply pressure gauge, 10, electric ball valves A, 11, a check valve, 12, a circulating pump, 13, electric ball valves B, 14, a return water temperature sensor, 15, a return water pressure gauge, 16, the air conditioner comprises an electric ball valve, a water outlet (connected with an air conditioning system water supply pipe), a water supply opening (connected with a heat exchanger water inlet pipe), a water inlet (connected with a heat exchanger water return pipe), a water return opening (connected with an air conditioning system water return pipe), a control screen 21, a control screen 22, a buzzer 23, an emergency stop button 24, a base 25, a box door 26, a fresh air inlet temperature sensor 27, a heat exchanger air inlet side temperature sensor 28, a heat exchanger air outlet side temperature sensor 29, a fresh air unit 30 and a heat exchanger.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1:
an intelligent anti-freezing device for a heat exchanger of an air conditioning unit comprises the following components: the device comprises an electric cabinet 1, an upper pipeline 2 and a lower pipeline 3, wherein a pipeline support 4 is installed in the electric cabinet, the upper pipeline and the lower pipeline are in a parallel structure and are fixedly connected with the pipeline support, the upper pipeline is in a series structure and is respectively connected with a water supply flowmeter 5, a filter 6, an electric valve 7, a water supply temperature sensor 8 and a water supply pressure gauge 9, the lower pipeline is in a series structure and is respectively connected with an electric ball valve A10, a check valve 11, a circulating pump 12, an electric ball valve B13, a return water temperature sensor 14 and a return water pressure gauge 15 in a series connection manner, and the lower pipeline is in a parallel structure with a bypass electric ball valve 16; the two ends of the upper pipeline are respectively connected with a water outlet 17 and a water supply port 18, the water outlet is connected with a water supply pipe of an air conditioning system, and the water supply port is connected with a water inlet pipe of a heat exchanger; the two ends of the lower pipeline are respectively connected with a water inlet 19 and a water return port 20, the water inlet is connected with a heat exchanger water return pipe, and the water return port is connected with an air conditioning system water return pipe.
Example 2:
according to the intelligent anti-freezing device of the air conditioning unit heat exchanger in the embodiment 1, the control panel of the electric cabinet is respectively connected with the control screen 21, the buzzer 22 and the emergency stop button 23.
Example 3:
according to the intelligent anti-freezing device of the air conditioning unit heat exchanger in the embodiment 1 or 2, the bottom of the electric cabinet is connected with the base 24.
Example 4:
according to the intelligent anti-freezing device of the air conditioning unit heat exchanger in the embodiment 1, 2 or 3, the electric cabinet is connected with the cabinet door 25.
The utility model discloses an air conditioning unit heat exchanger intelligence freeze-proof device, its theory of operation is:
the water supply hot water pipe of the air conditioning system is connected with a water supply port, the flow is monitored by a flowing water supply flowmeter, the water supply is filtered by a filter, the temperature and the pressure of the hot water entering a heat exchanger are respectively monitored by a water supply temperature sensor and a water supply port pressure gauge after an electric valve, the hot water finally flows out of the heat exchanger after being radiated by a water outlet and enters a water inlet, the hot water flowing out after being radiated by the heat exchanger is monitored by a return water port pressure gauge and a return water temperature sensor again, the electric ball valve is closed when the unit is in a closed state, and the return water returns to the return water pipe of the air conditioning system through a normally open bypass electric ball valve and then through a return water port. When the fresh air inlet temperature sensor senses that the fresh air inlet temperature is lower than a set value, the circulating pump is started, the electric ball valves on the two sides are started at the same time, the bypass electric ball valve is closed, the circulating pump pumps water in the heat exchanger so as to increase the water supply flow, the heat dissipation capacity of the heat exchanger is increased, the surface temperature of the heat exchanger of the fresh air conditioning unit is ensured not to be lower than the set temperature, and the heat exchanger is prevented from frosting or even being frozen and cracked.
Claims (4)
1. An intelligent anti-freezing device for a heat exchanger of an air conditioning unit comprises the following components: electric cabinet, upper line way and lower pipeline, characterized by: the electric cabinet is internally provided with a pipeline bracket, the upper pipeline and the lower pipeline are in a parallel structure and are fixedly connected with the pipeline bracket, the upper pipeline is in a serial structure and is respectively connected with a water supply flowmeter, a filter, an electric valve, a water supply temperature sensor and a water supply pressure gauge, the lower pipeline is in a serial structure and is respectively connected with an electric ball valve A, a check valve, a circulating pump, an electric ball valve B, a return water temperature sensor and a return water pressure gauge in a serial connection, and the lower pipeline is connected with a bypass electric ball valve in a parallel structure;
the two ends of the upper pipeline are respectively connected with a water outlet and a water supply port, the water outlet is connected with a water supply pipe of an air conditioning system, and the water supply port is connected with a water inlet pipe of a heat exchanger;
the two ends of the lower pipeline are respectively connected with a water inlet and a water return port, the water inlet is connected with a heat exchanger water return pipe, and the water return port is connected with an air conditioning system water return pipe.
2. The intelligent antifreeze apparatus for air conditioning unit heat exchangers according to claim 1, wherein: and a control panel of the electric cabinet is respectively connected with a control screen, a buzzer and an emergency stop button.
3. The intelligent antifreeze apparatus for air conditioning unit heat exchangers according to claim 2, wherein: the bottom of the electric cabinet is connected with the base.
4. The intelligent antifreeze apparatus for air conditioning unit heat exchangers according to claim 3, wherein: the electric cabinet is connected with the cabinet door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123314573.6U CN216592145U (en) | 2021-12-27 | 2021-12-27 | Intelligent anti-freezing device for heat exchanger of air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123314573.6U CN216592145U (en) | 2021-12-27 | 2021-12-27 | Intelligent anti-freezing device for heat exchanger of air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216592145U true CN216592145U (en) | 2022-05-24 |
Family
ID=81616094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123314573.6U Expired - Fee Related CN216592145U (en) | 2021-12-27 | 2021-12-27 | Intelligent anti-freezing device for heat exchanger of air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216592145U (en) |
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2021
- 2021-12-27 CN CN202123314573.6U patent/CN216592145U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220524 |