CN220818138U - Flooded evaporator capable of changing heat pipe flow - Google Patents
Flooded evaporator capable of changing heat pipe flow Download PDFInfo
- Publication number
- CN220818138U CN220818138U CN202322687795.5U CN202322687795U CN220818138U CN 220818138 U CN220818138 U CN 220818138U CN 202322687795 U CN202322687795 U CN 202322687795U CN 220818138 U CN220818138 U CN 220818138U
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- Prior art keywords
- connecting port
- pipeline
- chilled water
- heat exchanger
- shell
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000003507 refrigerant Substances 0.000 claims abstract description 26
- 238000005057 refrigeration Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000007710 freezing Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a flooded evaporator capable of changing heat pipe flow, which comprises a shell-and-tube heat exchanger, wherein a first connecting port and a third connecting port are respectively arranged at the left end of the shell-and-tube heat exchanger, a second connecting port and a fourth connecting port are respectively arranged at the right end of the shell-and-tube heat exchanger, and a water inlet and outlet pipeline assembly is connected with the first connecting port, the second connecting port, the third connecting port and the fourth connecting port; the shell and tube heat exchanger is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet are connected with a refrigeration assembly. The utility model aims to overcome the defects of the prior art and provide the flooded evaporator capable of changing the heat pipe flow, which can avoid freezing risk caused by too low water flow in the heat exchange pipe of the heat exchanger.
Description
Technical Field
The utility model relates to a flooded evaporator capable of changing heat pipe flow.
Background
In industrial applications, there is an increasing general need to increase the efficiency, in particular the energy efficiency, of the machine and thus the heat exchange efficiency of the refrigeration system of the machine.
The existing unit has low load rate, and under the condition that the variable-frequency water pump is equipped to adjust the flow rate so as to maintain the inlet water temperature and the outlet water temperature of target chilled water, the flow rate of water in the heat exchange tube of the heat exchanger is too low, so that the freezing risk exists, and therefore, the flooded evaporator capable of changing the heat pipe flow is provided for the problems.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide the flooded evaporator capable of changing the heat pipe flow, which avoids freezing risks caused by too low water flow in the heat exchange pipe of the heat exchanger.
The technical scheme for achieving the purpose is as follows: the flooded evaporator with the changeable heat pipe flow comprises a shell-and-tube heat exchanger, wherein a first connecting port and a third connecting port are respectively arranged at the left end of the shell-and-tube heat exchanger, a second connecting port and a fourth connecting port are respectively arranged at the right end of the shell-and-tube heat exchanger, and the first connecting port, the second connecting port, the third connecting port and the fourth connecting port are connected with a water inlet and outlet pipeline component; the shell and tube heat exchanger is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet are connected with a refrigeration assembly.
Preferably, the water inlet and outlet pipeline assembly comprises a chilled water inlet pipeline and a chilled water outlet pipeline, the chilled water inlet pipeline is connected to the first connecting port, and the chilled water outlet pipeline is connected to the third connecting port; the second connecting port and the fourth connecting port are connected to an auxiliary pipeline together, and the left end of the auxiliary pipeline is connected with the chilled water outlet pipeline;
The shell and tube heat exchanger is characterized in that a first heat exchange tube is connected between the first connecting port and the second connecting port in the shell and tube heat exchanger, a second heat exchange tube is connected between the third connecting port and the fourth connecting port, and a middle partition plate is arranged in a water chamber at two sides of the shell and tube heat exchanger to separate the first heat exchange tube from the second heat exchange tube.
Preferably, the water inlet and outlet pipeline assembly further comprises a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, a first communication pipeline is connected between the chilled water inlet pipeline and the chilled water outlet pipeline, and the first electromagnetic valve is arranged on the first communication pipeline; the auxiliary pipeline is close to one end of the second connecting port and one end of the fourth connecting port, the second electromagnetic valve is arranged, and the third electromagnetic valve is arranged on the chilled water outlet pipeline.
Preferably, the refrigeration assembly comprises a compressor, a condenser and a throttling device, wherein the refrigerant outlet is connected with a second communication pipeline, and the second communication pipeline is connected with the compressor, the condenser and the throttling device in series and then connected with the refrigerant inlet.
Preferably, the first heat exchange tube and the second heat exchange tube may be plural.
Preferably, the third electromagnetic valve is located between the auxiliary pipeline and the junction of the first communication pipeline and the chilled water outlet pipeline.
Preferably, the first electromagnetic valve and the second electromagnetic valve are in a normally open state; the third electromagnetic valve is in a normally closed state.
The beneficial effects of the utility model are as follows: through setting up at unit load low to certain limit value and/or frozen water flow low to certain limit value, three solenoid valve (normally open becomes normally closed, normally closed becomes normally open, first solenoid valve and second solenoid valve become normally closed from normally open state, the state that the third solenoid valve becomes normally open from normally closed state) for frozen water enters into the third connector through first connecting pipeline from frozen water inlet tube way difference, can only enter into first heat exchange tube through first connecting port, when the heat transfer is accomplished, because the frozen water of second solenoid valve for the off state can only right side flow in from the fourth connector, heat transfer again through the second heat exchange tube, then flow out from the third connector, then flow out from the frozen water outlet pipe way, through above make frozen water carry out twice heat transfer, the freezing risk that the water flow is too low in the heat exchanger heat transfer tube can be avoided.
Drawings
FIG. 1 is a schematic illustration of a flooded evaporator of the present utility model that can vary the heat pipe flow;
FIG. 2 is a schematic view showing the positions of a first heat exchange tube and a second heat exchange tube according to the present utility model.
In the figure: 1. a shell-and-tube heat exchanger; 2. a first connection port; 3. a second connection port; 4. a third connection port; 5. a fourth connection port; 6. a refrigerant inlet; 7. a refrigerant outlet; 8. chilled water inlet pipeline; 9. chilled water outlet pipeline; 10. an auxiliary pipeline; 11. a first electromagnetic valve; 12. a second electromagnetic valve; 13. a third electromagnetic valve; 14. a first communication line; 15. a second heat exchange tube; 16. a compressor; 17. a condenser; 18. a throttle device; 19. a second communication line; 20. a first heat exchange tube; 21. and an intermediate baffle.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.
The utility model will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, a flooded evaporator capable of changing heat pipe flow comprises a shell-and-tube heat exchanger 1, wherein a first connecting port 2 and a third connecting port 4 are respectively arranged at the left end of the shell-and-tube heat exchanger 1, a second connecting port 3 and a fourth connecting port 5 are respectively arranged at the right end of the shell-and-tube heat exchanger 1, and water inlet and outlet pipeline components are connected with the first connecting port 2, the second connecting port 3, the third connecting port 4 and the fourth connecting port 5; the shell-and-tube heat exchanger 1 is provided with a refrigerant inlet 6 and a refrigerant outlet 7, and the refrigerant inlet 6 and the refrigerant outlet 7 are connected with a refrigeration assembly. The refrigerating water inlet flows into the refrigerating water outlet pipe and flows out after passing through the first group of heat exchange pipes and then flows into the second group of heat exchange pipes when the unit load is reduced to a certain limit value and/or the refrigerating water flow is reduced to a certain limit value. The freezing risk caused by too low water flow in the heat exchange tube of the heat exchanger can be avoided.
As shown in fig. 1-2, the water inlet and outlet pipeline assembly comprises a chilled water inlet pipeline 8 and a chilled water outlet pipeline 9, wherein the chilled water inlet pipeline 8 is connected to the first connecting port 2, and the chilled water outlet pipeline 9 is connected to the third connecting port 4; the second connecting port 3 and the fourth connecting port 5 are commonly connected to an auxiliary pipeline 10, and the left end of the auxiliary pipeline 10 is connected with a chilled water outlet pipeline 9; a first heat exchange tube 20 is connected between the first connecting port 2 and the second connecting port 3 in the shell-and-tube heat exchanger 1, a second heat exchange tube 15 is connected between the third connecting port 4 and the fourth connecting port 5, and a middle partition plate 21 is arranged in the water chamber at two sides of the shell-and-tube heat exchanger 1 to separate the first heat exchange tube 20 from the second heat exchange tube 15. The first heat exchange tube 20 and the second heat exchange tube 15 may be plural. Chilled water or chilled water solution is carried through chilled water inlet line 8. The water inlet and outlet pipeline assembly further comprises a first electromagnetic valve 11, a second electromagnetic valve 12 and a third electromagnetic valve 13, a first communication pipeline 14 is connected between the chilled water inlet pipeline 8 and the chilled water outlet pipeline 9, and the first electromagnetic valve 11 is arranged on the first communication pipeline 14; the auxiliary pipeline 10 is provided with a second electromagnetic valve 12 near one end of the second connecting port 3 and one end of the fourth connecting port 5, and the chilled water outlet pipeline 9 is provided with a third electromagnetic valve 13. The third solenoid valve 13 is located between the auxiliary line 10 and the junction of the first communication line 14 and the chilled water outlet line 9. The first electromagnetic valve 11 and the second electromagnetic valve 12 are in a normally open state; the third solenoid valve 13 is normally closed.
As shown in fig. 1, the refrigeration assembly includes a compressor 16, a condenser 17, and a throttle device 18, and the refrigerant outlet 7 is connected to a second communication line 19, and the second communication line 19 is connected in series with the compressor 16, the condenser 17, and the throttle device 18 and then connected to the refrigerant inlet 6. The second communication line 19 runs the refrigerant. The refrigerant is reduced in temperature by the compressor 16, the condenser 17 and the throttling device 18, so that the temperature in the shell-and-tube heat exchanger 1 is low, and the first heat exchange tube 20 and the second heat exchange tube 15 in the shell-and-tube heat exchanger 1 exchange heat in the interior. The condenser 17 may be air-cooled or water-cooled.
Under normal conditions, the three electromagnetic valves (the first electromagnetic valve 11, the second electromagnetic valve 12 and the third electromagnetic valve 13) are in a power-off state, chilled water enters the first connecting port 2 from the chilled water inlet pipeline 8 and enters the third connecting port 4 through the first communication pipeline 14, then enters the first heat exchange pipe 20 and the second heat exchange pipe 15 in the shell-and-tube heat exchanger 1, flows out from the second connecting port 3 and the fourth connecting port 5 after heat exchange is completed, and then flows into the auxiliary pipeline 10 and then flows out from the chilled water outlet pipeline 9.
When the unit load is low to a certain limit value and/or the chilled water flow rate is low to a certain limit value, three electromagnetic valves (normally open to normally closed, normally closed to normally open, first electromagnetic valve 11 and second electromagnetic valve 12 are changed from normally open to normally closed, and third electromagnetic valve 13 is changed from normally closed to normally open), so that chilled water enters from chilled water inlet pipeline 8 to third connection port 4 through first communication pipeline 14, and can only enter first heat exchange pipe 20 through first connection port 2, when the chilled water flows out from second connection port 3 after heat exchange is finished, because second electromagnetic valve 12 is in closed state, the chilled water can only flow into fourth connection port 5, exchange heat again through second heat exchange pipe 15, then flow out from third connection port 4, and then flow out from chilled water outlet pipeline 9.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (7)
1. The flooded evaporator capable of changing the heat pipe flow is characterized by comprising a shell-and-tube heat exchanger (1), wherein a first connecting port (2) and a third connecting port (4) are respectively arranged at the left end of the shell-and-tube heat exchanger (1), a second connecting port (3) and a fourth connecting port (5) are respectively arranged at the right end of the shell-and-tube heat exchanger, and the first connecting port (2), the second connecting port (3), the third connecting port (4) and the fourth connecting port (5) are connected with a water inlet and outlet pipeline assembly; the shell and tube heat exchanger (1) is provided with a refrigerant inlet (6) and a refrigerant outlet (7), and the refrigerant inlet (6) and the refrigerant outlet (7) are connected with a refrigeration assembly.
2. The flooded evaporator of a switchable heat pipe flow according to claim 1, characterized in that the water inlet and outlet pipeline assembly comprises a chilled water inlet pipeline (8) and a chilled water outlet pipeline (9), the chilled water inlet pipeline (8) being connected to the first connection port (2), the chilled water outlet pipeline (9) being connected to the third connection port (4); the second connecting port (3) and the fourth connecting port (5) are commonly connected to an auxiliary pipeline (10), and the left end of the auxiliary pipeline (10) is connected with the chilled water outlet pipeline (9);
The heat exchange device is characterized in that a first heat exchange tube (20) is connected between the first connecting port (2) and the second connecting port (3) in the shell and tube heat exchanger (1), a second heat exchange tube (15) is connected between the third connecting port (4) and the fourth connecting port (5), and a middle partition plate (21) is arranged in a water chamber at two sides of the shell and tube heat exchanger (1) to separate the first heat exchange tube (20) and the second heat exchange tube (15).
3. The flooded evaporator of a switchable heat pipe flow according to claim 2, characterized in that the water inlet and outlet pipeline assembly further comprises a first electromagnetic valve (11), a second electromagnetic valve (12) and a third electromagnetic valve (13), a first communication pipeline (14) is connected between the chilled water inlet pipeline (8) and the chilled water outlet pipeline (9), and the first electromagnetic valve (11) is arranged on the first communication pipeline (14); the auxiliary pipeline (10) is close to one end of the second connecting port (3) and one end of the fourth connecting port (5) are provided with the second electromagnetic valve (12), and the chilled water outlet pipeline (9) is provided with the third electromagnetic valve (13).
4. The flooded evaporator of a switchable heat pipe flow according to claim 1, characterized in that the refrigeration assembly comprises a compressor (16), a condenser (17) and a throttling device (18), the refrigerant outlet (7) is connected to a second communication line (19), the second communication line (19) being connected in series to the compressor (16), the condenser (17) and the throttling device (18) and then to the refrigerant inlet (6).
5. The flooded evaporator of claim 2, wherein said first heat exchange tube (20) and said second heat exchange tube (15) are multiple.
6. A switchable heat pipe flow flooded evaporator according to claim 3, characterized in that the third solenoid valve (13) is located between the auxiliary line (10) and the junction of the first communication line (14) and the chilled water outlet line (9).
7. A switchable heat pipe flow flooded evaporator in accordance with claim 3, characterized in that the first solenoid valve (11) and the second solenoid valve (12) are in a normally open state; the third electromagnetic valve (13) is in a normally closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322687795.5U CN220818138U (en) | 2023-10-08 | 2023-10-08 | Flooded evaporator capable of changing heat pipe flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322687795.5U CN220818138U (en) | 2023-10-08 | 2023-10-08 | Flooded evaporator capable of changing heat pipe flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220818138U true CN220818138U (en) | 2024-04-19 |
Family
ID=90699788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322687795.5U Active CN220818138U (en) | 2023-10-08 | 2023-10-08 | Flooded evaporator capable of changing heat pipe flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220818138U (en) |
-
2023
- 2023-10-08 CN CN202322687795.5U patent/CN220818138U/en active Active
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