CN111947339B - Variable flow off-board heat exchanger device - Google Patents
Variable flow off-board heat exchanger device Download PDFInfo
- Publication number
- CN111947339B CN111947339B CN202010879850.9A CN202010879850A CN111947339B CN 111947339 B CN111947339 B CN 111947339B CN 202010879850 A CN202010879850 A CN 202010879850A CN 111947339 B CN111947339 B CN 111947339B
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- heat exchanger
- thermostat
- pipeline
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- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims abstract description 35
- 230000004308 accommodation Effects 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002775 capsule Substances 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 abstract description 51
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004378 air conditioning Methods 0.000 description 9
- 238000009826 distribution Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 239000012188 paraffin wax Substances 0.000 description 5
- 239000011555 saturated liquid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XEBWQGVWTUSTLN-UHFFFAOYSA-M phenylmercury acetate Chemical compound CC(=O)O[Hg]C1=CC=CC=C1 XEBWQGVWTUSTLN-UHFFFAOYSA-M 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides an external heat exchanger device with a variable flow, which comprises a heat exchanger component, a pipeline component, a separated thermostat and an integrated liquid storage tank, wherein the heat exchanger component comprises a first collecting pipe and a second collecting pipe, the pipeline component comprises a first pipeline, the first pipeline is connected with two ends of the first collecting pipe through a first interface and a third interface respectively, one end of the first pipeline, which is close to the first interface, is an inlet end, and one end of the first pipeline, which is close to the third interface, is an outlet end; the split thermostat is arranged on the first pipeline and between the first interface and the third interface, and is connected with the first collecting pipe through the second interface; the integrated liquid storage tank is connected with the second collecting pipe. According to the invention, the self-adaptive adjustment of the refrigerant flowing direction is realized through one thermostat, so that the heat exchange effect and practicality of the device are greatly improved, the cost is reduced, the structure is simple, and the operation is convenient.
Description
Technical Field
The invention relates to the field of new energy automobile heat management, in particular to an external heat exchanger device with variable flow path.
Background
With the development of automobile technology, the occupancy of electric automobiles in vehicles is higher and higher, and the heat pump air conditioning technology of electric automobiles is also more and more researched and applied, and a plurality of electric automobiles at home and abroad are provided with heat pump air conditioning systems, and an external heat exchanger in the heat pump air conditioning systems is not only used as a condenser but also used as an evaporator, so that the heat pump air conditioning systems are important components.
The flow distribution is consistent when the heat exchanger outside the vehicle is used as a condenser and an evaporator in the heat pump air conditioning system of most electric vehicles at present, so that the heat exchange efficiency is greatly reduced, and the heat pump air conditioning system has poor effect. As mentioned in patent document CN108036550a, four interfaces are needed to realize the functions of the condenser and the evaporator and the flow distribution is consistent, which increases the manufacturing cost of the heat exchanger outside the vehicle and complicates the connection of the heat pump air conditioning system.
For another example, patent document CN110793354a discloses a variable flow heat exchanger device suitable for electric vehicles, but the design uses a bellows and adjusts the flow by pressure, but the bellows needs to be designed separately and has certain difficulty in installation; also, for example, patent document CN108826753a discloses a variable flow parallel flow heat exchanger, but this design achieves a flow change by manually adjusting the movable mechanism, which is inefficient.
Therefore, it is necessary to develop an external heat exchanger capable of realizing the flow path distribution of the condenser and the evaporator, so that the heat exchange efficiency of the external heat exchanger can be improved, the pipeline connection of the heat pump air conditioning system can be simplified, the cost is saved, and the heat exchange capacity of the heat pump air conditioning system is improved.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a variable-flow off-board heat exchanger device.
The invention provides an external heat exchanger device with a variable flow, which comprises a heat exchanger component, a pipeline component, a separated thermostat and an integrated liquid storage tank, wherein the heat exchanger component is arranged on the outside of the vehicle;
The heat exchanger assembly comprises a first collecting pipe and a second collecting pipe, the pipeline assembly comprises a first pipeline, the first pipeline is connected with two ends of the first collecting pipe through a first interface and a third interface respectively, one end, close to the first interface, of the first pipeline is an inlet end, and one end, close to the third interface, of the first pipeline is an outlet end;
The split thermostat is arranged on the first pipeline and between the inlet end and the outlet end, and is connected with the first collecting pipe through the second interface;
The integrated liquid storage tank is connected with the second collecting pipe.
Preferably, the heat exchanger assembly further comprises a flat tube assembly;
The first collecting pipe and the second collecting pipe are respectively arranged at two sides of the flat pipe assembly and are communicated through the flat pipe assembly.
Preferably, a first side plate and a second side plate are arranged in the first collecting pipe;
The first side plate and the second side plate divide the first collecting pipe into a first accommodating space, a second accommodating space and a third accommodating space in sequence, wherein the first interface, the second interface and the third interface are respectively connected with the first accommodating space, the second accommodating space and the third accommodating space;
A third side plate is arranged in the second collecting pipe, and divides the second collecting pipe into a fourth accommodating space and a fifth accommodating space;
the integrated liquid storage tank is provided with a fourth interface and a fifth interface, the fourth interface and the fifth interface are respectively connected with a fourth accommodating space and a fifth accommodating space, and the length of the fifth interface extending into the integrated liquid storage tank is larger than that of the fourth interface extending into the integrated liquid storage tank;
The second side plate and the third side plate are symmetrically arranged on two sides of the flat tube assembly.
Preferably, the split thermostat is capable of switching between a condenser mode and an evaporator mode, wherein in the condenser mode, the inlet end of the first pipeline is respectively communicated with the first accommodating space and the second accommodating space;
in the evaporator mode, the inlet end of the first pipeline is communicated with the first accommodating space, and the outlet end of the first pipeline is communicated with the second accommodating space.
Preferably, the flat tube assembly comprises a flat tube and a fin;
the number of the flat tubes is multiple, the flat tubes are arranged in parallel, and the fins are arranged between two adjacent flat tubes.
Preferably, a drying bag is installed in the integrated liquid storage tank, one end of the drying bag is connected with the fourth accommodating space through a fourth interface, and the other end of the drying bag is connected with the fifth accommodating space through a fifth interface.
Preferably, the split thermostat includes a thermostat housing and a ram assembly;
A sixth containing space is formed in the thermostat shell, a first flow passage, a second flow passage and a third flow passage which are communicated with the outside are formed in the thermostat shell, the first flow passage, the second flow passage and the third flow passage are respectively communicated with the sixth containing space, the first flow passage is connected with the inlet end of a first pipeline, the second flow passage is connected with the second containing space through a second interface, and the third flow passage is connected with the outlet end of the first pipeline;
The ejector rod assembly is arranged in the sixth accommodating space and comprises a spring, a guide post, an ejector rod and an elastic bag body;
the ejector rod comprises an ejector rod protruding part, the ejector rod protruding part comprises a protruding part lower surface, and the spring is sleeved on the ejector rod and arranged between the protruding part lower surface and the inner wall of the thermostat shell;
The inside of ejector pin is provided with seventh accommodation space, be provided with the ejector pin through-hole on the ejector pin just seventh accommodation space communicates with the outside through the ejector pin through-hole, the inside of thermostat casing is fixed with the draw-in groove just the draw-in groove is arranged in first runner, the one end of guide pillar is installed in the draw-in groove, the other end of guide pillar passes the ejector pin through-hole and extends to in the seventh accommodation space and with setting up the elastic bag body contact in seventh accommodation space.
Preferably, a sealing block is arranged in the thermostat shell, and in the condenser mode, the ejector rod can move close to the third flow passage, and one end of the ejector rod close to the third flow passage can be in sealing fit with the sealing block;
The ejector rod protruding portion comprises a protruding portion, one end, close to the first flow channel, of the sixth containing space is of a conical structure, in the evaporator mode, the ejector rod can move close to the first flow channel, and the protruding portion can be in sealing fit with the inner wall of the thermostat shell.
Preferably, the first pipeline is a split piece, one side of the thermostat housing close to the first runner is detachably connected with the first pipeline, one side of the thermostat housing close to the third runner is detachably connected with the first pipeline, and one side of the thermostat housing close to the second runner is detachably connected with the second interface.
Preferably, the integrated liquid storage tank is mounted at the upper end of the heat exchanger assembly or at the lower end of the heat exchanger assembly.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the refrigerant circulation direction is regulated by one thermostat, so that the heat exchange effect of the condenser and the evaporator is greatly improved, the pipeline structure is simplified, and the practicability of the device is improved.
2. The heat exchanger of the invention has one inlet and one outlet, whether the heat exchanger is used as a condenser or an evaporator, the inlet is always the inlet, the outlet is always the outlet, the number of interfaces is reduced, the complexity of connection of pipelines is simplified, the manufacturing cost is reduced, the structure is simple, and the operation is convenient.
3. According to the invention, the switching of the refrigerant flow is realized through the arrangement of the internal structure of the thermostat, the operation of changing the flow through electric or pneumatic control in the prior art is solved, the energy consumption is saved, and the method is scientific and reasonable.
4. The thermostat can be integrated in an external pipeline, and the external pipeline can be connected with the interface of the heat exchanger assembly through various detachable structures such as threads and the like, so that the thermostat is convenient to maintain or replace.
5. The structural arrangement of the integrated liquid storage tank ensures that the condenser is a supercooling condenser and ensures that the outlet is supercooling refrigerant liquid.
Drawings
Other features, objects and advantages of the present invention 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 a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the flow path of the refrigerant as a condenser in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the flow path of the refrigerant as an evaporator in embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure of the split thermostat in the condenser mode.
FIG. 5 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 6 is a schematic view showing the flow path of the refrigerant as a condenser in embodiment 2 of the present invention;
fig. 7 is a schematic diagram of the flow path of the refrigerant as an evaporator in embodiment 2 of the present invention.
The figure shows:
fifth receiving space 25 of third side plate 13 of heat exchanger assembly 1
Thermostat housing 26 of integrated liquid storage tank 14 of pipeline assembly 2
Sixth accommodation space 27 of drying bag 15 of separated thermostat 3
The first inlet assembly 4 fourth port 16 first flow passage 28
The fifth interface 17 of the first outlet assembly 5 second flow path 29
Third flow passage 30 of flat tube 18 of first interface 6
Second interface 7 Fin 19 spring 31
Third interface 8 first conduit 20 ejector pin protrusion 32
First receiving space 21 of first header 9 has guide column 33
The second accommodating space 22 of the second collecting pipe 10 is provided with a clamping groove 34
The third accommodation space 23 of the first side plate 11 is provided with a push rod 35
Sealing block 36 of fourth accommodation space 24 of second side plate 12
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
The invention provides an external heat exchanger device with variable flow, as shown in figures 1-4, comprising a heat exchanger component 1, a pipeline component 2, a separated thermostat 3 and an integrated liquid storage tank 14, wherein the integrated liquid storage tank 14 is arranged at the upper end of the heat exchanger component 1 or at the lower end of the heat exchanger component 1; the outlet is liquid, and the required volume is small; the flow distribution of the first flow with less flow and the second flow with more flow is adopted as the evaporator, and the inlet is mainly liquid when the evaporator is adopted, so that the volume is small; the outlet is mainly gas, and the volume is large, so that the heat exchange effect of the condenser and the evaporator is greatly improved.
The separated thermostat 3 can be integrated in an external pipeline, and the external pipeline can be connected with an interface of the heat exchanger through threads or a pressing plate, so that the thermostat is replaceable and convenient to detach. The heat exchanger is vertically arranged and has better condensate water discharging function and lower refrigerant pressure drop; the integrated liquid storage tank 14 allows the condenser to be a subcooled condenser, ensuring that the outlet is subcooled refrigerant liquid. The heat exchanger of the invention has one inlet and one outlet, whether the heat exchanger is a condenser or an evaporator, the inlet is always the inlet, the outlet is always the outlet, the number of interfaces is reduced, and the connection of pipelines is simplified. The invention is illustrated in detail below by means of two examples.
Example 1:
The heat exchanger assembly 1 comprises a first collecting pipe 9 and a second collecting pipe 10, the pipeline assembly 2 comprises a first pipeline 20, the first pipeline 20 is connected with two ends of the first collecting pipe 9 through a first interface 6 and a third interface 8 respectively, one end, close to the first interface 6, of the first pipeline 20 is an inlet end, one end, close to the third interface 8, of the first pipeline 20 is an outlet end, refrigerant flows in from the inlet end of the first pipeline 20 and flows out from the outlet end of the first pipeline 20, the split type thermostat 3 is arranged on the first pipeline 20 and is arranged between the first interface 6 and the third interface 8, the split type thermostat 3 is connected with the first collecting pipe 9 through a second interface 7, the integrated liquid storage tank 14 is connected with the second collecting pipe 10, and the integrated liquid storage tank 14 is arranged at the lower end of the heat exchanger assembly 1.
Specifically, as shown in fig. 1, the heat exchanger assembly 1 further includes a flat tube assembly, and the first collecting pipe 9 and the second collecting pipe 10 are respectively disposed at two sides of the flat tube assembly and are communicated through the flat tube assembly. The flat tube assembly comprises a plurality of flat tubes 18 and fins 19, the flat tubes 18 are arranged in parallel, the fins 19 are arranged between two adjacent flat tubes 18 and connected with the flat tubes 18, heat of the flat tubes 18 is transferred to the fins 19, the heat exchange area of the fins 19 is increased, and the heat exchange effect of the heat exchanger can be improved.
Specifically, as shown in fig. 1, a first side plate 11 and a second side plate 12 are disposed in the first collecting pipe 9, the first side plate 11 and the second side plate 12 divide the first collecting pipe 9 into a first accommodating space 21, a second accommodating space 22 and a third accommodating space 23 in sequence, the first interface 6, the second interface 7 and the third interface 8 are respectively connected with the first accommodating space 21, the second accommodating space 22 and the third accommodating space 23, the third side plate 13 is disposed in the second collecting pipe 10, the third side plate 13 divides the second collecting pipe 10 into a fourth accommodating space 24 and a fifth accommodating space 25, the fourth interface 16 and the fifth interface 17 are disposed on the integrated liquid storage tank 14, and the fourth interface 16 and the fifth interface 17 are respectively connected with the fourth accommodating space 24 and the fifth accommodating space 25, wherein the length of the fifth interface 17 extending into the integrated liquid storage tank 14 is greater than the length of the fourth interface 16 extending into the integrated liquid storage tank 14. The second side plate 12 and the third side plate 13 are symmetrically arranged at both sides of the flat tube assembly, so that the flat tube 18 connected to the first receiving space 21 and the second receiving space 22 is connected to the fourth receiving space 24.
Specifically, a drying bag 15 is installed in the integrated liquid storage tank 14, one end of the drying bag 15 is connected with a fourth accommodating space 24 through a fourth interface 16, and the other end of the drying bag 15 is connected with a fifth accommodating space 25 through a fifth interface 17.
Specifically, as shown in fig. 1 and 4, the split thermostat (3) includes a thermostat housing (26) and a ram assembly, and the thermostat housing 26 preferably adopts a split structure so as to be capable of conveniently maintaining and assembling the ram assembly.
Further, as shown in fig. 1 and 4, a sixth accommodating space (27) is provided in the thermostat housing (26), a first flow passage (28), a second flow passage (29) and a third flow passage (30) which are communicated with the outside are provided in the thermostat housing (26), the first flow passage (28), the second flow passage (29) and the third flow passage (30) are respectively communicated with the sixth accommodating space (27), the first flow passage (28) is connected with an inlet end of the first pipeline (20), the second flow passage (29) is connected with the second accommodating space (22) through a second interface (7), the third flow passage (30) is connected with an outlet end of the first pipeline (20), and the ejector rod assembly is installed in the sixth accommodating space (27).
Still further, as shown in fig. 1 and 4, the ejector rod assembly includes a spring (31), a guide post (33), an ejector rod (35) and an elastic bag body, the ejector rod (35) includes an ejector rod protruding portion (32), the ejector rod protruding portion (32) includes a protruding portion lower surface, and the spring (31) is sleeved on the ejector rod (35) and is disposed between the protruding portion lower surface and an inner wall of the thermostat housing (26); the inside of ejector pin (35) is provided with seventh accommodation space, be provided with the ejector pin through-hole on ejector pin (35) just seventh accommodation space passes through ejector pin through-hole and outside intercommunication, the inside of thermostat casing (26) is fixed with draw-in groove (34) just draw-in groove (34) are arranged in first flow channel (28), in draw-in groove (34) is installed to the one end of guide pillar (33), the other end of guide pillar (33) passes the ejector pin through-hole and extends to in the seventh accommodation space and contact with the elastic capsule body that sets up in seventh accommodation space.
In the invention, a sealing block (36) is arranged in the thermostat shell (26), the temperature of the refrigerant is higher, for example, the temperature is higher than 25 ℃, paraffin is preferably filled in the elastic bag body, when the refrigerant with higher temperature passes through the sixth containing space (27), heat is transferred to the elastic bag body through the ejector rod 35, the paraffin melts and further enlarges the volume of the elastic bag body, the elastic bag body presses the guide column 33, the guide column 33 is pressed and then transmits the pressing force to the clamping groove 34, the clamping groove 34 is fixed, the elastic bag body drives the ejector rod 35 to move away from the first flow channel 28 and close to the third flow channel 30 under the driving of the reaction force of the clamping groove 34, at the moment, the spring 31 is compressed and shortened, the first flow channel 28 is communicated with the second flow channel 29, the second flow channel 29 is not communicated with the third flow channel 30, one end of the ejector rod (35) close to the third flow channel (30) can be sealed and attached to the sealing block (36), sealing of the third flow channel (30) is realized, no fluid passes through, and the refrigerant flows out of the second flow channel (29) from the sixth containing space (27) after flowing out of the first flow channel 28.
Further, when the ejector rod assembly is operated in the evaporator mode, the temperature of the refrigerant is lower, for example, less than 15 ℃, when the refrigerant with lower temperature passes through the sixth accommodating space (27), the temperature is transmitted to the elastic bag body through the ejector rod 32, the paraffin is solidified, the volume of the elastic bag body is reduced, a gap is formed between the elastic bag body and the guide post 33 in the seventh accommodating space, the compressed spring 31 can drive the ejector rod 35 to move close to the first flow channel 28 under the action of the rebound force, the first flow channel 28 is not communicated with the second flow channel 29, and the second flow channel 29 is communicated with the third flow channel 30. According to the invention, the temperature of the refrigerant is different, the inlet refrigerant is high-temperature gas when the refrigerant is used as a condenser, and the inlet refrigerant is low-temperature gas-liquid two-phase when the refrigerant is used as an evaporator, so that the adjustment of the circulating direction of the thermostat is realized, the circulating direction of the refrigerant is changed, and the conversion of the circulating channel of the heat exchanger is realized. Wherein, ejector pin bulge (32) include above the bulge, one end that sixth accommodation space (27) is close to first runner (28) is the toper structure, in the evaporimeter mode, ejector pin (35) can be close to first runner (28) motion, can seal the laminating with the inner wall of thermostat casing (26) above the bulge, realize first runner (28) seal, first runner (28) do not have fluid to flow through.
Specifically, when the split thermostat 3 is in the condenser mode, the inlet end of the first pipe 20 is respectively communicated with the first accommodating space 21 and the second accommodating space 22, and in the condenser mode, the flow route of the refrigerant of the heat exchanger device is realized, so that the flow route distribution mode of the refrigerant with more required volume, more required outlet liquid and less required volume is realized when the split thermostat is used as a condenser; in the evaporator mode, the inlet end of the first pipe 20 is communicated with the first accommodating space 21, and the outlet end of the first pipe 20 is communicated with the second accommodating space 22, so that the inlet is mainly liquid, the required volume is small, the outlet is mainly gas, and the required volume is large, thereby being beneficial to improving the heat exchange efficiency. The heat exchange effect of the heat exchanger serving as a condenser and an evaporator is greatly improved through the adjustment of the flow path of the refrigerant with a variable flow path.
Specifically, the first pipeline 20 is a split piece, one side of the thermostat housing 26 close to the first flow channel 28 is detachably connected with the first pipeline 20, one side of the thermostat housing 26 close to the third flow channel 30 is detachably connected with the first pipeline 20, one side of the thermostat housing 26 close to the second flow channel 29 is detachably connected with the second interface 7, and the thermostat housing 26 and the connected pipeline are detachably connected, so that the split thermostat 3 can be conveniently detached and replaced, and maintenance is convenient.
Specifically, the first inlet component 4 is installed to the entrance point of first pipeline 20, the first outlet component 5 is installed to the exit point of first pipeline 20, and first inlet component 4, first outlet component 5 can all select suitable structure according to actual application scenario, for installation and dismantlement provide convenience, also can reach simultaneously and match the effect of installation and sealing installation.
Example 2:
As shown in fig. 5,6 and 7, in a variation of embodiment 1, the integrated liquid storage tank 14 is installed at the upper end of the heat exchanger assembly 1, and still realizes a flow route distribution mode of the refrigerant with more volume required, less volume required and more volume required when the integrated liquid storage tank is used as a condenser, and the heat exchanger is used as an evaporator, wherein the inlet is mainly liquid, less volume required, the outlet is mainly gas, more volume required and benefit to improve heat exchange efficiency. The embodiment also greatly improves the heat exchange effect of the heat exchanger serving as a condenser and an evaporator through the variable-flow refrigerant flow route.
The variable flow parallel flow heat exchanger is suitable for the variable working condition of the air conditioner during working, so that the efficiency of the heat exchanger under the variable working condition is optimal, the distribution of the refrigerant is optimized by adopting the variable flow, the flow path with low heat exchange efficiency of the refrigerant in the flat tube is reduced, the whole area of the heat exchanger is utilized at the highest efficiency, and the aim of improving the performance of the heat exchanger is achieved.
Taking example 1 as an example, the working principle of the invention is as follows:
Fig. 1 shows an external heat exchanger assembly of a variable flow path vehicle according to the present invention, fig. 2 shows an embodiment of the heat exchanger as a condenser, high-temperature and high-pressure refrigerant gas (for example, greater than 25 ℃) flows in from an inlet end of a first pipe 20, one part of the refrigerant gas sequentially enters a first collecting pipe 9 through the first pipe 20 and a first port 6, the other part of the refrigerant gas enters a separation type thermostat 3 through the first pipe 20, materials (for example, paraffin) in an elastic bag body inside the separation type thermostat 3 are melted and the volume of the elastic bag body is increased, so that a push rod 35 in the separation type thermostat 3 is driven to compress a spring 31, a first flow passage 28 and a second flow passage 29 of the separation type thermostat 3 are communicated, the refrigerant gas is allowed to flow into a second accommodating space 22 in the first collecting pipe 9 through the thermostat 3, the second flow passage 29 and a third flow passage 30 in the separation type thermostat 3 are not communicated, and sealing is realized to avoid the refrigerant flowing to an outlet end of the first pipe 20. The number of the first flow Cheng Bian pipes 18 through which the refrigerant gas flows is large (the first flow is the flat pipe 18 on the right side of the second side plate 12 in fig. 1), the refrigerant discharged from the first flow passes through the fourth accommodating space 24 in the second collecting pipe 10 and then enters the integrated liquid storage tank 14 through the fourth interface 16 (relatively higher position), the drying bag 15 dries the refrigerant in the integrated liquid storage tank 14, the fifth interface 17 is relatively lower, the refrigerant discharged from the refrigerant storage tank 14 through the fifth interface 17 is saturated liquid, the discharged saturated liquid is discharged through the second flow Cheng Bian pipe 18 (the second flow is the flat pipe 18 on the left side of the second side plate 12 in fig. 1), the discharged saturated liquid is changed into supercooled liquid, and finally the refrigerant flows out of the outlet end of the first pipe 20 through the third interface 8. Even if the opening and closing of the thermostat are delayed, the heat exchanger is always circulated, so that the problem that the heat exchanger does not work is avoided.
Fig. 3 is an embodiment of the heat exchanger as an evaporator. A low temperature refrigerant gas (e.g., less than 15 c) flows from the inlet end of the first pipe 20 into the first accommodating space 21 through the first port 6. The low-temperature refrigerant gas solidifies the material (such as paraffin material) inside the elastic capsule in the split-type thermostat 3, so that the volume of the elastic capsule becomes smaller, and a gap is formed between the elastic capsule and the guide post 33, at this time, the compressed spring 31 can drive the ejector rod 35 to move close to the first flow passage 28 under the action of resilience force, the first flow passage 28 in the split-type thermostat 3 is closed, i.e. the inlet end of the first pipe 20 is not communicated with the second port 7, the refrigerant is not allowed to flow through the split-type thermostat 3, and the third flow passage 30 of the split-type thermostat 3 is opened, i.e. the outlet end of the first pipe 20 is communicated with the second port 7. The number of the first flow Cheng Bian pipes 18 through which the refrigerant flows is small (such as the flat pipe 18 on the right side of the first side plate 11 in fig. 1), after the refrigerant from the first flow absorbs heat, a part of the refrigerant enters the integrated liquid storage tank 14 through the fourth interface 16 (relatively higher in position) after passing through the fourth accommodating space 24, the drying bag 15 dries the refrigerant in the integrated liquid storage tank 14, the second interface 17 is relatively lower in position, the refrigerant from the liquid storage tank is saturated liquid, the saturated liquid from the liquid storage tank absorbs heat through the flat pipe 18 (the flat pipe 18 on the left side of the second side plate 12 in fig. 1) of the second flow Cheng Bufen, the other part of the refrigerant enters the flat pipe 12 between the first side plate 11 and the second side plate 12 for evaporation and absorption, and the part of the refrigerant flows out through the outlet end of the first pipeline 20 through the second interface 7 and the separation type thermostat 3 to complete the flow of the refrigerant.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application 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 application.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The variable-flow external heat exchanger device is characterized by comprising a heat exchanger assembly (1), a pipeline assembly (2), a separated thermostat (3) and an integrated liquid storage tank (14);
The heat exchanger assembly (1) comprises a first collecting pipe (9) and a second collecting pipe (10), the pipeline assembly (2) comprises a first pipeline (20), the first pipeline (20) is connected with two ends of the first collecting pipe (9) through a first interface (6) and a third interface (8) respectively, one end, close to the first interface (6), of the first pipeline (20) is an inlet end, and one end, close to the third interface (8), of the first pipeline (20) is an outlet end;
the split thermostat (3) is arranged on the first pipeline (20) and is arranged between the inlet end and the outlet end, and the split thermostat (3) is connected with the first collecting pipe (9) through the second interface (7);
the integrated liquid storage tank (14) is connected with the second collecting pipe (10).
2. The variable flow off-board heat exchanger device according to claim 1, wherein the heat exchanger assembly (1) further comprises a flat tube assembly;
the first collecting pipe (9) and the second collecting pipe (10) are respectively arranged at two sides of the flat pipe assembly and are communicated through the flat pipe assembly.
3. The variable flow external heat exchanger device according to claim 2, wherein a first side plate (11) and a second side plate (12) are provided in the first header pipe (9);
the first side plate (11) and the second side plate (12) divide the first collecting pipe (9) into a first accommodating space (21), a second accommodating space (22) and a third accommodating space (23) in sequence, wherein the first interface (6), the second interface (7) and the third interface (8) are respectively connected with the first accommodating space (21), the second accommodating space (22) and the third accommodating space (23);
a third side plate (13) is arranged in the second collecting pipe (10), and the third side plate (13) divides the second collecting pipe (10) into a fourth accommodating space (24) and a fifth accommodating space (25);
the integrated liquid storage tank (14) is provided with a fourth interface (16) and a fifth interface (17), the fourth interface (16) and the fifth interface (17) are respectively connected with a fourth accommodating space (24) and a fifth accommodating space (25), wherein the length of the fifth interface (17) extending into the integrated liquid storage tank (14) is larger than the length of the fourth interface (16) extending into the integrated liquid storage tank (14);
the second side plate (12) and the third side plate (13) are symmetrically arranged on two sides of the flat tube assembly.
4. A variable flow external heat exchanger device according to claim 3, characterized in that the split thermostat (3) is switchable between a condenser mode in which the inlet end of the first pipe (20) communicates with the first accommodation space (21) and the second accommodation space (22), respectively;
In the evaporator mode, an inlet end of the first pipe (20) is communicated with the first accommodating space (21), and an outlet end of the first pipe (20) is communicated with the second accommodating space (22).
5. The variable flow off-board heat exchanger device of claim 2, wherein the flat tube assembly comprises flat tubes (18) and fins (19);
The number of the flat tubes (18) is multiple, the flat tubes (18) are arranged in parallel, and the fins (19) are arranged between two adjacent flat tubes (18).
6. A variable flow external heat exchanger device according to claim 3, characterized in that a drying pack (15) is installed in the integrated liquid storage tank (14), one end of the drying pack (15) is connected with a fourth accommodating space (24) through a fourth interface (16), and the other end of the drying pack (15) is connected with a fifth accommodating space (25) through a fifth interface (17).
7. A variable flow off-board heat exchanger device according to claim 3, wherein the split thermostat (3) comprises a thermostat housing (26) and a ram assembly;
A sixth containing space (27) is arranged in the thermostat housing (26), a first flow passage (28), a second flow passage (29) and a third flow passage (30) which are communicated with the outside are arranged in the thermostat housing (26), the first flow passage (28), the second flow passage (29) and the third flow passage (30) are respectively communicated with the sixth containing space (27), the first flow passage (28) is connected with the inlet end of the first pipeline (20), the second flow passage (29) is connected with the second containing space (22) through a second interface (7), and the third flow passage (30) is connected with the outlet end of the first pipeline (20);
the ejector rod assembly is arranged in the sixth accommodating space (27) and comprises a spring (31), a guide pillar (33), an ejector rod (35) and an elastic bag body;
the ejector rod (35) comprises an ejector rod protruding portion (32), the ejector rod protruding portion (32) comprises a protruding portion lower face, and the spring (31) is sleeved on the ejector rod (35) and is arranged between the protruding portion lower face and the inner wall of the thermostat shell (26);
The inside of ejector pin (35) is provided with seventh accommodation space, be provided with the ejector pin through-hole on ejector pin (35) just seventh accommodation space passes through ejector pin through-hole and outside intercommunication, the inside of thermostat casing (26) is fixed with draw-in groove (34) just draw-in groove (34) are arranged in first flow channel (28), in draw-in groove (34) is installed to the one end of guide pillar (33), the other end of guide pillar (33) passes the ejector pin through-hole and extends to in the seventh accommodation space and contact with the elastic capsule body that sets up in seventh accommodation space.
8. The variable flow external heat exchanger apparatus according to claim 7, wherein a seal block (36) is provided inside the thermostat housing (26), and in the condenser mode, the ejector rod (35) is movable near the third flow passage (30), and an end of the ejector rod (35) near the third flow passage (30) is capable of being in sealing engagement with the seal block (36);
The ejector rod protruding portion (32) comprises a protruding portion, one end, close to the first flow channel (28), of the sixth containing space (27) is of a conical structure, in the evaporator mode, the ejector rod (35) can move close to the first flow channel (28), and the protruding portion can be in sealing fit with the inner wall of the thermostat shell (26).
9. The variable flow external heat exchanger apparatus according to claim 8, wherein the first pipe (20) is a split piece, a side of the thermostat housing (26) close to the first flow passage (28) is detachably connected to the first pipe (20), a side of the thermostat housing (26) close to the third flow passage (30) is detachably connected to the first pipe (20), and a side of the thermostat housing (26) close to the second flow passage (29) is detachably connected to the second interface (7).
10. The variable flow off-board heat exchanger device according to claim 1, wherein the integrated reservoir (14) is mounted at the upper end of the heat exchanger assembly (1) or at the lower end of the heat exchanger assembly (1).
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| CN202010879850.9A CN111947339B (en) | 2020-08-27 | 2020-08-27 | Variable flow off-board heat exchanger device |
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| CN202010879850.9A CN111947339B (en) | 2020-08-27 | 2020-08-27 | Variable flow off-board heat exchanger device |
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| CN111947339B true CN111947339B (en) | 2024-05-10 |
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| CN111947339A (en) | 2020-11-17 |
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