CN213454357U - Plate tube heat pump system of evaporation cooling unit - Google Patents
Plate tube heat pump system of evaporation cooling unit Download PDFInfo
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- CN213454357U CN213454357U CN202020968728.4U CN202020968728U CN213454357U CN 213454357 U CN213454357 U CN 213454357U CN 202020968728 U CN202020968728 U CN 202020968728U CN 213454357 U CN213454357 U CN 213454357U
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Abstract
The utility model provides an evaporation cooling unit plate tube heat pump system, which comprises a fan, a circulating water pump, a plate tube evaporator, a fin evaporator, a four-way reversing valve, a compressor, a gas-liquid separator, a shell tube evaporator and a liquid storage device; the circulating water pump is connected with the plate-tube evaporator, and the fan is arranged above the plate-tube evaporator; the compressor, the four-way reversing valve, the plate tube evaporator, the fin evaporator, the liquid storage device, the shell tube evaporator and the gas-liquid separator are sequentially connected. The utility model provides an evaporation cooling unit plate pipe heat pump system, the evaporation cooling unit does not need to add antifreeze when heating in winter, reduces the use cost of customers; meanwhile, the operation of an antifreeze pump is cancelled, the cold source consumption of the antifreeze pump is reduced, and the antifreeze pump does not need to be maintained, so that the unit can operate more stably. The compressor may be embodied as a scroll compressor, a screw compressor, a centrifugal compressor, and a piston compressor.
Description
Technical Field
The invention relates to the technical field of air conditioning units, in particular to a plate tube heat pump system of an evaporation cooling unit.
Background
The heat pump system of the existing traditional plate-tube evaporation cooling unit uses a four-way reversing valve to switch heating, and antifreeze is added on the plate-tube side to exchange heat, so that the plate tube is prevented from freezing during heating. The heat pump system of the traditional plate-tube evaporation cooling unit has the following defects because the antifreeze liquid needs to be consumed:
1. the antifreeze solution needs to be consumed, and the continuous consumption causes the increase of the operation cost of the unit.
2. Most of the antifreeze is glycerol, for example, and it needs to be discharged after heating in winter, which damages the environment.
3. In the antifreeze adding technology, an antifreeze adding pump and an antifreeze adding container are required to be automatically added, so that the cost is high, and the power consumption of a unit is required to be increased during operation; the other is manual addition, which requires manual timing to add antifreeze to the unit, and is inconvenient to use and consumes labor cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a plate pipe heat pump system of an evaporation cooling unit, which does not need to add antifreeze when heating in winter, thus reducing the use cost of customers; meanwhile, the operation of an antifreeze pump is cancelled, the cold source consumption of the antifreeze pump is reduced, and the antifreeze pump does not need to be maintained, so that the unit can operate more stably.
The utility model adopts the following technical scheme:
a plate tube heat pump system of an evaporation cooling unit comprises a fan, a circulating water pump, a plate tube evaporator, a fin evaporator, a four-way reversing valve, a compressor, a gas-liquid separator, a shell tube evaporator and a liquid storage device; the circulating water pump is connected with the plate-tube evaporator, and the fan is installed above the plate-tube evaporator.
The air outlet of the compressor is connected with a first outlet of a four-way reversing valve, a second outlet of the four-way reversing valve is connected with an inlet of a plate tube evaporator, an outlet of the plate tube evaporator is connected with two pipelines, the first pipeline is a first pipeline which is connected with an inlet of a liquid storage device, the second pipeline is a second pipeline which is connected with an outlet of the liquid storage device through a fin evaporator; the inlet of the liquid storage device is connected with two pipelines, the first pipeline is a first pipeline, the second pipeline is a third pipeline, the third pipeline is connected with the outlet of the shell tube evaporator, the outlet of the liquid storage device is connected with a main pipeline, the main pipeline is connected with two branch pipelines, the first branch pipeline is a second pipeline, the second branch pipeline is a fourth pipeline, and the fourth pipeline is connected with the outlet of the shell tube evaporator; the shell tube evaporator inlet is connected with the fourth outlet of the four-way reversing valve, the third outlet of the four-way reversing valve is connected with the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is connected with the air suction port of the compressor.
Furthermore, a first control valve is arranged on the pipeline of the plate-tube evaporator connected fin evaporator in the second pipeline.
Furthermore, a second control valve is arranged on a pipeline of the fin evaporator connected with the main pipeline in the second pipeline.
Further, a third control valve is arranged on the first pipeline.
Furthermore, a copper ball valve, a drying filter barrel and an electronic expansion valve are sequentially arranged on the main pipeline from the outlet direction of the liquid storage device.
The utility model has the advantages that:
(1) the system improves and optimizes a heat pump system of the traditional plate-tube evaporation cooling unit, improves a heating system to use an air cooling system when heating is achieved, cancels addition of antifreeze and consumption of antifreeze, and reduces cost.
(2) The system has good refrigerating and heating operation effects, retains the advantages of low condensing temperature and high energy efficiency when the plate tube is used for evaporating, cooling and then refrigerating, has stable operation in a heating mode when the heating mode is operated, and completely improves the defects of consumption of antifreeze, addition of antifreeze and discharge of antifreeze.
(3) The system eliminates the need of adding an antifreezing solution to the evaporation cooling unit during heating in winter, thereby reducing the cost; meanwhile, the operation of an antifreeze pump is cancelled, so that the cold source consumption of the antifreeze pump is reduced, the maintenance of the antifreeze pump is cancelled, and the operation of the unit is more stable; the system does not need an antifreezing fluid pump, and the manufacturing cost is also reduced.
Drawings
Fig. 1 is a schematic structural diagram of a plate-tube heat pump system of an evaporation cooling unit of the present invention.
In the attached drawings, a compressor 1, a compressor exhaust port 11, a compressor air suction port 12, a four-way reversing valve 2, a first outlet 21 of the four-way reversing valve, a second outlet 22 of the four-way reversing valve, a third outlet 23 of the four-way reversing valve, a fourth outlet 24 of the four-way reversing valve, a plate tube evaporator 3, an inlet 31 of the plate tube evaporator, an outlet 32 of the plate tube evaporator, a fin evaporator 4, a liquid storage device 5, an inlet 51 of the liquid storage device, an outlet 52 of the liquid storage device, a shell tube evaporator 6 and an inlet 61 of the shell tube evaporator, the device comprises a shell-and-tube evaporator outlet 62, a gas-liquid separator 7, a gas-liquid separator inlet 71, a gas-liquid separator outlet 72, a fan 8, a circulating water pump 9, a main pipeline 10, a first pipeline 13, a third control valve 131, a second pipeline control valve 14, a first control valve 141, a second control valve 142, a third pipeline 15, a fourth pipeline 16, a copper ball valve 17, a drying and filtering barrel 18 and an electronic expansion valve 19.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides an evaporation cooling unit plate tube heat pump system, please refer to fig. 1, fig. 1 is a structural schematic diagram of the evaporation cooling unit plate tube heat pump system of the utility model, which specifically comprises a fan 8, a circulating water pump 9, a plate tube evaporator 3, a fin evaporator 4, a four-way reversing valve 2, a two-way compressor 1, a gas-liquid separator 7, a shell tube evaporator 6 and a liquid reservoir 5; the circulating water pump 9 is connected with the plate-tube evaporator 3, and the fan 8 is arranged above the plate-tube evaporator 3.
The compressor exhaust port 11 is connected with a first outlet 21 of the four-way reversing valve, a second outlet 22 of the four-way reversing valve is connected with a plate tube evaporator inlet 31, a plate tube evaporator outlet 32 is connected with two pipelines, the first pipeline is a first pipeline 13, a third control valve 131 is arranged on the first pipeline 13, and the first pipeline 13 is connected with a reservoir inlet 51; the second pipeline is a second pipeline 14, the second pipeline 14 is connected with the outlet 52 of the liquid storage device through the finned evaporator 4, and a first control valve 141 is arranged on the pipeline of the second pipeline 14, which is used for connecting the plate-tube evaporator 3 with the finned evaporator 4; a second control valve 141 is arranged on the pipeline of the fin evaporator 4 connected with the main pipeline 10 in the second pipeline 14.
The inlet 51 of the liquid storage device is connected with two pipelines, the first pipeline is a first pipeline 13, the second pipeline is a third pipeline 15, the third pipeline 15 is connected with the outlet 62 of the shell-and-tube evaporator, the outlet 52 of the liquid storage device is connected with the main pipeline 10, the main pipeline 10 is sequentially provided with a copper ball valve 17, a drying filter barrel 18 and an electronic expansion valve 19 from the outlet 52 of the liquid storage device, the main pipeline 10 is connected with two branch pipelines, the first branch pipeline is a second pipeline 14, the second branch pipeline is a fourth pipeline 16, and the fourth pipeline 16 is connected with the outlet 62 of the shell-and-tube evaporator; the shell-tube evaporator inlet 61 is connected with the fourth outlet 24 of the four-way reversing valve, the third outlet 23 of the four-way reversing valve is connected with the inlet 71 of the gas-liquid separator, and the outlet 72 of the gas-liquid separator is connected with the suction port 12 of the compressor.
The utility model discloses a theory of operation is:
during refrigeration, a first outlet 21 and a second outlet 22 of the four-way reversing valve are communicated, a third outlet 23 and a fourth outlet 24 of the four-way reversing valve are communicated, the fan 8 is started, the circulating water pump 9 is started, and cooling water cools the plate tube evaporator 3 through the circulating water pump 9; the refrigerant is discharged from the compressor 1, enters the plate-tube evaporator 3 through a first outlet 21 and a second outlet 22 of the four-way reversing valve, enters the liquid reservoir 5 after passing through a third control valve 131 on the first pipeline 13 from an outlet 32 of the plate-tube evaporator, enters the shell-tube evaporator 6 through a fourth pipeline 16 after passing through the copper ball valve 17, the drying filter barrel 18 and the electronic expansion valve 19, enters the compressor 1 after entering the gas-liquid separator 7, the refrigeration cycle is completed, and at this time, the first control valve and the second control valve are controlled to be closed and the third control valve is controlled to be opened according to the control logic requirement.
During heating, the first outlet 21 and the fourth outlet 24 of the four-way reversing valve are communicated, the second outlet 22 and the third outlet 23 are communicated, the fan 8 is started, the circulating water pump 9 is closed, the refrigerant is discharged from the compressor 1, enters the shell-tube evaporator 62 through the first outlet 21 and the fourth outlet 24 of the four-way reversing valve for heat exchange, enters the liquid reservoir 5 through the third pipeline 15 after heat exchange, after coming out of the liquid storage device 5 and throttling through a copper ball valve 17, a drying and filtering barrel 18 and an electronic expansion valve 19, enters the finned evaporator 4 through the second control valve 142 on the second pipeline 14, enters the plate-tube evaporator 3 through the first control valve 141 on the second pipeline 14 after passing through the finned evaporator 4 to complete heat exchange, enters the gas-liquid separator 7 through the second outlet 22 and the third outlet 23 of the four-way reversing valve after heat exchange, and finally enters the compressor 1 to complete the heating cycle. And at the moment, the first control valve and the second control valve are controlled to be opened and the third control valve is controlled to be closed according to the control logic requirement.
During defrosting, a first outlet 21 and a second outlet 22 of a four-way reversing valve are communicated, a third outlet 23 and a fourth outlet 24 of the four-way reversing valve are communicated, refrigerant is discharged from a compressor 1, enters a plate tube evaporator through the first outlet 21 and the second outlet 22 of the four-way reversing valve, exits from an outlet 32 of the plate tube evaporator, enters a fin heat exchanger 4 through a first control valve, flows through a second control valve through an outlet of the fin heat exchanger and is connected back to a connector of a liquid reservoir 51, enters a shell tube evaporator 6 through a fourth pipeline 16 after passing through a copper ball valve 17, a drying filter barrel 18 and an electronic expansion valve 19, enters the compressor 1 after entering a gas-liquid separator 7, defrosting cycle is completed, and at the moment, an environment temperature, the surface temperature of the fin evaporator, the unit running time, the high pressure of compressor exhaust and the low pressure sensor of return gas pass through an intelligent controller according to control logic control, when the, When the surface temperature of the fin evaporator reaches a set value or the running time or the exhaust high-pressure of the compressor and the return low-pressure sensor reach set values, the unit enters a defrosting mode, the second control valve is closed when the defrosting mode is started, and the first control valve and the third control valve are opened.
The system has good refrigerating and heating operation effects, retains the advantages of low condensing temperature and high energy efficiency during the process of plate tube evaporation, cooling and re-refrigerating, and simultaneously has stable operation in the heating mode during the operation in the re-heating mode, and the defects of antifreeze liquid consumption, antifreeze liquid addition and antifreeze liquid discharge are completely improved. The system eliminates the need of adding the antifreeze to the evaporation cooling unit during heating in winter, thereby reducing the cost of the antifreeze used by customers; meanwhile, the operation of an antifreeze pump is cancelled, so that the cold source consumption of the antifreeze pump is reduced, the maintenance of the antifreeze pump is cancelled, and the operation of the unit is more stable; the system does not need an antifreezing fluid pump, and the manufacturing cost is also reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (5)
1. A plate tube heat pump system of an evaporation cooling unit is characterized by comprising a fan (8), a circulating water pump (9), a plate tube evaporator (3), a fin evaporator (4), a four-way reversing valve (2), a compressor (1), a gas-liquid separator (7), a shell tube evaporator (6) and a liquid storage device (5); the circulating water pump (9) is connected with the plate-tube evaporator (3), and the fan (8) is arranged above the plate-tube evaporator (3);
an exhaust port (11) of a compressor is connected with a first outlet (21) of a four-way reversing valve, a second outlet (22) of the four-way reversing valve is connected with a plate tube evaporator inlet (31), a plate tube evaporator outlet (32) is connected with two pipelines, the first pipeline is a first pipeline (13), the first pipeline (13) is connected with a liquid reservoir inlet (51), the second pipeline is a second pipeline (14), and the second pipeline (14) is connected with a liquid reservoir outlet (52) through a fin evaporator (4); the inlet (51) of the liquid storage device is connected with two pipelines, the first pipeline is a first pipeline (13), the second pipeline is a third pipeline (15), the third pipeline (15) is connected with the outlet (62) of the shell tube evaporator, the outlet (52) of the liquid storage device is connected with a main pipeline (10), the main pipeline (10) is connected with two branch pipelines, the first branch pipeline is a second pipeline (14), the second branch pipeline is a fourth pipeline (16), and the fourth pipeline (16) is connected with the outlet (62) of the shell tube evaporator; an inlet (61) of the shell-and-tube evaporator is connected with a fourth outlet (24) of the four-way reversing valve, a third outlet (23) of the four-way reversing valve is connected with an inlet (71) of the gas-liquid separator, and an outlet (72) of the gas-liquid separator is connected with a suction port (12) of the compressor.
2. The plate tube heat pump system of an evaporation cooling unit according to claim 1, characterized in that a first control valve (141) is arranged on the pipeline of the plate tube evaporator (3) connected with the fin evaporator (4) in the second pipeline (14).
3. An evaporation cooling unit plate tube heat pump system according to claim 2, characterized in that a second control valve (142) is arranged on the tube of the fin evaporator (4) in the second tube (14) connected to the main tube (10).
4. An evaporation cooling unit plate and tube heat pump system according to claim 3, characterized in that the first pipeline (13) is provided with a third control valve (131).
5. The plate-tube heat pump system of an evaporation cooling unit according to claim 4, characterized in that the main pipeline (10) is provided with a copper ball valve (17), a drying filter barrel (18) and an electronic expansion valve (19) in sequence from the direction of the outlet (52) of the liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020968728.4U CN213454357U (en) | 2020-06-01 | 2020-06-01 | Plate tube heat pump system of evaporation cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020968728.4U CN213454357U (en) | 2020-06-01 | 2020-06-01 | Plate tube heat pump system of evaporation cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213454357U true CN213454357U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020968728.4U Active CN213454357U (en) | 2020-06-01 | 2020-06-01 | Plate tube heat pump system of evaporation cooling unit |
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| Country | Link |
|---|---|
| CN (1) | CN213454357U (en) |
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2020
- 2020-06-01 CN CN202020968728.4U patent/CN213454357U/en active Active
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