CN211503329U - Microchannel heat exchanger and heat pump water heater - Google Patents
Microchannel heat exchanger and heat pump water heater Download PDFInfo
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- CN211503329U CN211503329U CN201921834282.XU CN201921834282U CN211503329U CN 211503329 U CN211503329 U CN 211503329U CN 201921834282 U CN201921834282 U CN 201921834282U CN 211503329 U CN211503329 U CN 211503329U
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- heat exchanger
- separation plate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 110
- 238000000926 separation method Methods 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 abstract description 45
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a microchannel heat exchanger and heat pump water heater. The microchannel heat exchanger includes: two collecting pipes; the microchannel tubes are arranged side by side and connected between the two collecting pipes; at least one gas-liquid separation plate is arranged in each of the two collecting pipes, and a liquid discharge hole is formed in each gas-liquid separation plate. The gas-liquid separation is carried out on the gas-liquid mixed refrigerant flowing in the collecting pipe through the gas-liquid separation plate, so that the heat of the micro-channel heat exchanger is uniformly distributed, the heat exchange efficiency is improved, and the user experience of the heat pump water heater is improved.
Description
Technical Field
The utility model belongs to the technical field of domestic appliance, especially, relate to a microchannel heat exchanger and heat pump water heater.
Background
At present, a water heater is a common household appliance in daily life, and a heat pump water heater is widely popularized and used due to high energy efficiency. A heat pump water heater generally includes a water tank and a refrigeration circuit, the refrigeration circuit including a compressor, a condenser, a throttling device, and an evaporator connected together, and the water tank including a housing and a liner disposed in the housing. The condenser is arranged outside the inner container and used for releasing heat to heat water stored in the inner container.
Chinese patent No. 201210107201.2 discloses a heat pump water heater using a microchannel heat exchanger for heating, wherein the microchannel heat exchanger includes two collecting pipes and a plurality of microchannel tubes disposed between the two collecting pipes. The microchannel tube is attached to the outer wall of the water tank inner container so as to heat water in the inner container by releasing heat through the refrigerant flowing in the microchannel tube. The microchannel heat exchanger enters the collecting pipe through the air inlet pipe and is distributed to enter the plurality of upper microchannel pipes for flowing heat exchange, and the gaseous refrigerant forms a certain amount of liquid refrigerant after heat exchange of the microchannel pipes and is collected into the collecting pipe on the other side. And as the refrigerant continues to flow to the lower microchannel tube, the liquid refrigerant will also follow the gaseous refrigerant into the lower microchannel tube. On one hand, the liquid refrigerant influences the rapid flowing heat exchange of the gaseous refrigerant in the microchannel pipe, and on the other hand, part of the microchannel pipe is blocked by the liquid refrigerant, so that the gaseous refrigerant cannot enter. The whole heat exchange quantity of the micro-channel heat exchanger is distributed unevenly, and the heat exchange efficiency of the water heater is low.
In view of this, how to design a technique that the heat transfer volume distributes evenly so that the temperature of water heater distributes evenly and improves the heating effect of water heater is the technical problem that the utility model aims to solve.
SUMMERY OF THE UTILITY MODEL
The utility model provides a microchannel heat exchanger and heat pump water heater carries out gas-liquid separation through the gas-liquid separation board with the gas-liquid mixture refrigerant that flows in the pressure manifold to make the heat distribution of microchannel heat exchanger even and improve heat exchange efficiency, with the user experience nature that improves heat pump water heater.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a microchannel heat exchanger, include:
two collecting pipes;
the microchannel tubes are arranged side by side and connected between the two collecting pipes;
at least one gas-liquid separation plate is arranged in each of the two collecting pipes, and a liquid discharge hole is formed in each gas-liquid separation plate.
Furthermore, a floating body is arranged on the gas-liquid separation plate and used for opening and closing the liquid discharge hole by utilizing buoyancy.
Furthermore, a limiting mechanism is further arranged on the gas-liquid separation plate and used for limiting the position of the floating body on the gas-liquid separation plate.
Further, the limiting mechanism comprises a plurality of limiting plates, and the limiting plates are distributed around the outer periphery of the liquid discharge hole and fixed on the gas-liquid separation plate; the distance between the upper ends of any two limiting plates is smaller than the overall dimension of the floating body.
Furthermore, the limiting mechanism is a housing, a through hole is formed in the housing, and the housing is installed on the gas-liquid separation plate and covers the floating body.
Furthermore, stop gear includes connecting rod and stopper, the lower tip of connecting rod with the stopper is connected, the connecting rod is inserted in the outage, the upper end of connecting rod with the body is connected.
Furthermore, a groove is formed in the gas-liquid separation plate, the liquid discharge hole is formed in the bottom of the groove, and the floating body is located in the groove.
Furthermore, an elastic plate for opening and closing the liquid discharge hole is arranged on the gas-liquid separation plate.
Furthermore, one end of the elastic plate is fixed on the lower surface of the gas-liquid separation plate, and the elastic plate is attached to the lower surface of the gas-liquid separation plate and covers the liquid discharge hole.
Furthermore, one of the collecting pipes is provided with an air inlet, and the collecting pipe with the air inlet is also provided with a separation plate which is positioned between the air inlet and the gas-liquid separation plate.
The utility model also provides a heat pump water heater, including inner bag and heat exchanger, the heat exchanger centers on the lateral wall of inner bag is arranged, the heat exchanger includes: two collecting pipes; the microchannel tubes are arranged side by side and connected between the two collecting pipes; at least one gas-liquid separation plate is arranged in each of the two collecting pipes, and a liquid discharge hole is formed in each gas-liquid separation plate.
Compared with the prior art, the utility model discloses an advantage is with positive effect: through dispose the gas-liquid separation board in the pressure manifold, the outage on the gas-liquid separation board can in time arrange the below to the pressure manifold with liquid refrigerant to the refrigerant that reduces the gas-liquid mixture state enters into the microchannel pipe, and the gaseous state refrigerant of furthest's assurance can be fast smooth and easy via the heat transfer of microchannel pipe, so that the whole heat transfer volume of microchannel heat exchanger distributes evenly, improves heat exchange efficiency, with the user experience nature that improves heat pump water heater.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an embodiment of the microchannel heat exchanger of the present invention;
FIG. 2 is one of the schematic structural views of the gas-liquid separation panel of FIG. 1;
FIG. 3 is a second schematic view of the gas-liquid separation panel of FIG. 1;
FIG. 4 is a third schematic view of the gas-liquid separation plate shown in FIG. 1;
FIG. 5 is a fourth schematic view of the gas-liquid separation panel shown in FIG. 1;
FIG. 6 is a fifth schematic view of the gas-liquid separation panel of FIG. 1;
fig. 7 is a schematic structural diagram of an embodiment of the heat pump water heater of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
First embodiment, as shown in fig. 1 to 2, the present embodiment provides a microchannel heat exchanger, including: two collecting pipes 1 and a plurality of micro-channel pipes 2; a plurality of micro-channel tubes 2 are arranged side by side and connected between the two collecting pipes 1; at least one gas-liquid separation plate 3 is respectively arranged in the two collecting pipes 1, and a liquid discharge hole 31 is formed in the gas-liquid separation plate 3.
Specifically, in the microchannel heat exchanger, the gas-liquid separation plate 3 is arranged in the collecting pipe 1, the collecting pipe 1 is divided into a plurality of sections of flow channels by the gas-liquid separation plate 3, and the microchannel tube 2 is correspondingly communicated with the flow channels corresponding to two sides, so that the refrigerant flows along the microchannel tube 2 from top to bottom. When the gaseous refrigerant enters the microchannel heat exchanger to be conveyed, the gaseous refrigerant can form part of liquid refrigerant after heat exchange, and the transmission speed of the liquid refrigerant in the microchannel pipe 2 is slower. Therefore, the liquid refrigerant in the gas-liquid mixed state in the header pipe 1 falls onto the gas-liquid separation plate 3 by gravity, and the liquid refrigerant rapidly flows toward the bottom of the header pipe 1 through the drain hole 31. Thus, the liquid refrigerant can rapidly flow to the bottom of the collecting pipe 1 through the liquid discharge hole 31, and the gaseous refrigerant can smoothly flow in the microchannel pipe 2, so that the problem of low heat exchange efficiency caused by the gas-liquid mixed refrigerant flowing into the microchannel pipe 2 is effectively solved. Utilize gas-liquid separation board 3 to carry out gas-liquid separation to the gas-liquid mixture refrigerant in the pressure manifold 1, on the one hand can make the liquid refrigerant flow fast to pressure manifold 1 bottom with the liquid refrigerant of quick output, on the other hand can alleviate the air lock that the liquid refrigerant produced gaseous refrigerant in microchannel tube 2 to improve gaseous refrigerant's transmission rate, thereby improve heat exchange efficiency more effectively.
Furthermore, in order to reduce the transmission of the gaseous refrigerant to the bottom of the collecting main 1 through the liquid discharge hole 31, a floating body 32 is further disposed on the gas-liquid separation plate 3, and the floating body 32 is used for opening and closing the liquid discharge hole 31 by utilizing buoyancy. Specifically, in the flowing heat exchange process of the micro-channel heat exchanger, after the gaseous refrigerant exchanges heat to form part of liquid refrigerant, the liquid refrigerant is collected in the collecting pipe 1 and flows onto the gas-liquid separation plate 3 below under the action of gravity. The floating body 32 is immersed in the liquid refrigerant, and the floating body 32 floats away from the gas-liquid separation plate 3 by buoyancy to open the drain hole 31, so that the liquid refrigerant rapidly flows down from the drain hole 31.
As a preferred embodiment, in order to prevent the floating body 32 from moving freely on the gas-liquid separation plate 3, a position limiting process needs to be performed on the floating body 32, and a position limiting mechanism for limiting the position of the floating body 32 on the gas-liquid separation plate 3 is further provided on the gas-liquid separation plate 3.
For example: as shown in fig. 3, the limiting mechanism includes a plurality of limiting plates 33, and the limiting plates 33 are distributed around the outer circumference of the liquid discharge hole 31 and fixed on the gas-liquid separation plate 3; the distance between the upper ends of any two limiting plates 33 is smaller than the external dimension of the floating body 32. Specifically, the upper end portions of the limit plates 33 can limit any movement of the floating body 32 in the gas-liquid separation plate 3, on one hand, in the use process, after the floating body 32 floats due to the liquid refrigerant, the floating body 32 can limit the space among the plurality of limit plates 33, on the other hand, in the transportation process, the floating body 32 is effectively limited by the plurality of limit plates 33, and the floating body 32 can be guaranteed to move around the liquid drain hole 31. And preferably, the gas-liquid separation plate 3 is formed with a groove 30, a drain hole 31 is opened at the bottom of the groove 30, and a float 32 is located in the groove 30. Specifically, after the floating body 32 leaves the drain hole 31 due to buoyancy or shaking, the floating body 32 will be guided back to the drain hole 31 via the surface of the groove 30 in a natural state to reliably block the drain hole 31.
In one embodiment, as shown in fig. 4, the limiting mechanism is a cover 34, a through hole is formed in the cover 34, and the cover 34 is installed on the gas-liquid separation plate 3 and covers the floating body 32. Specifically, the cover 34 covers the float 32 above the gas-liquid separation plate 3 to restrict the float 32 from moving in the region around the drain hole 31. The through hole formed in the cover 34 can allow liquid refrigerant to enter the cover 34, so that the floating body 32 can float on the liquid refrigerant to open the drain hole 31.
In another embodiment, as shown in fig. 5, the limiting mechanism includes a connecting rod 35 and a limiting block 36, the lower end of the connecting rod 35 is connected to the limiting block 36, the connecting rod 35 is inserted into the drain hole 31, and the upper end of the connecting rod 35 is connected to the floating body 32. Specifically, the connecting rod 35 cooperates with the stopper 36, so that the floating body 32 can move up and down and rock left and right relative to the drain hole 31. And under the pull-down action of the limiting block 36, the floating body 32 can accurately block the drain hole 31 along with the connecting rod 35.
In another embodiment, as shown in fig. 6, the gas-liquid separation plate 3 is further provided with an elastic plate 37 for opening and closing the drain hole 31, and the elastic plate 37 can close the drain hole 31 by its own elastic force. One end of the elastic plate 37 is fixed to the lower surface of the gas-liquid separation plate 3, and the elastic plate 37 abuts against the lower surface of the gas-liquid separation plate 3 and covers the drain hole 31. When a certain amount of liquid refrigerant accumulates above the gas-liquid separation plate 3, the liquid refrigerant bends the elastic plate 37 downward by gravity to open the liquid discharge hole 31.
The preferred design of this embodiment, microchannel heat exchanger correspond on pressure manifold 1 and be provided with air inlet 11 and liquid outlet 12, according to the design needs, air inlet 11 and liquid outlet 12 can set up simultaneously on same pressure manifold 1, also can be provided with air inlet 11 on one of them pressure manifold 1, is provided with gas outlet 12 on another pressure manifold 1. On the other hand, since the gaseous refrigerant is introduced from the inlet port 11, the header 1 having the inlet port is further provided with a partition plate 13, and the partition plate 13 is located between the inlet port 11 and a gas-liquid separation plate 33 located below the inlet port 11. The partition plate 13 is a complete plate structure, and can block the gaseous refrigerant from flowing to the lower part of the collecting main 1, so as to ensure that the gaseous refrigerant entering from the air inlet 11 enters the collecting main 1 on the other side through the heat exchange of the corresponding microchannel tube 2.
Second embodiment, as shown in fig. 7, this embodiment provides a heat pump water heater, which includes an inner container 100 and a heat exchanger 200, the heat exchanger is disposed around a side wall of the inner container, wherein the heat exchanger employs the micro-channel heat exchanger in the above embodiments. In this embodiment, reference is made to the above-mentioned embodiment of the microchannel heat exchanger for a specific structural form of the microchannel heat exchanger, which is not described herein again.
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 apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (11)
1. A microchannel heat exchanger, comprising:
two collecting pipes;
the microchannel tubes are arranged side by side and connected between the two collecting pipes;
at least one gas-liquid separation plate is arranged in each of the two collecting pipes, and a liquid discharge hole is formed in each gas-liquid separation plate.
2. The micro-channel heat exchanger as claimed in claim 1, wherein a float is further provided on the gas-liquid separation plate, and the float is used for opening and closing the drain hole by using buoyancy.
3. The microchannel heat exchanger of claim 2, wherein the gas-liquid separation plate is further provided with a limiting mechanism, and the limiting mechanism is used for limiting the position of the floating body on the gas-liquid separation plate.
4. The microchannel heat exchanger according to claim 3, wherein the limiting mechanism comprises a plurality of limiting plates, and the limiting plates are distributed around the outer periphery of the liquid discharge hole and fixed on the gas-liquid separation plate; the distance between the upper ends of any two limiting plates is smaller than the overall dimension of the floating body.
5. The micro-channel heat exchanger as claimed in claim 3, wherein the limiting mechanism is a casing, a through hole is formed in the casing, and the casing is mounted on the gas-liquid separation plate and covers the floating body.
6. The microchannel heat exchanger according to claim 3, wherein the limiting mechanism comprises a connecting rod and a limiting block, the lower end of the connecting rod is connected with the limiting block, the connecting rod is inserted into the liquid discharge hole, and the upper end of the connecting rod is connected with the floating body.
7. The microchannel heat exchanger according to any one of claims 2 to 6, wherein the gas-liquid separation plate has a groove formed therein, the drain hole is opened at a bottom of the groove, and the floating body is located in the groove.
8. The microchannel heat exchanger of claim 1, wherein the gas-liquid separation plate is provided with an elastic plate for opening and closing the drain hole.
9. The microchannel heat exchanger of claim 8, wherein one end of the elastic plate is fixed to the lower surface of the gas-liquid separation plate, and the elastic plate abuts against the lower surface of the gas-liquid separation plate and covers the drain hole.
10. The microchannel heat exchanger of claim 1, wherein a gas inlet is provided in one of the headers, and a separator plate is provided in the header having the gas inlet, the separator plate being positioned between the gas inlet and the gas-liquid separation plate.
11. A heat pump water heater comprising a liner and a heat exchanger disposed around a side wall of the liner, wherein the heat exchanger employs a microchannel heat exchanger as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921834282.XU CN211503329U (en) | 2019-10-29 | 2019-10-29 | Microchannel heat exchanger and heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921834282.XU CN211503329U (en) | 2019-10-29 | 2019-10-29 | Microchannel heat exchanger and heat pump water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211503329U true CN211503329U (en) | 2020-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921834282.XU Active CN211503329U (en) | 2019-10-29 | 2019-10-29 | Microchannel heat exchanger and heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211503329U (en) |
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2019
- 2019-10-29 CN CN201921834282.XU patent/CN211503329U/en active Active
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