CN209820204U - Micro-channel heat exchanger - Google Patents
Micro-channel heat exchanger Download PDFInfo
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- CN209820204U CN209820204U CN201920102143.1U CN201920102143U CN209820204U CN 209820204 U CN209820204 U CN 209820204U CN 201920102143 U CN201920102143 U CN 201920102143U CN 209820204 U CN209820204 U CN 209820204U
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- heat exchange
- microchannel
- heat exchanger
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Abstract
The embodiment of the utility model relates to a heat exchanger device field provides a microchannel heat exchanger, including two at least heat transfer units, heat transfer unit includes upper end pressure manifold and the lower extreme pressure manifold that the average level set up, the upper end pressure manifold through the microchannel flat tube nest of tubes of vertical setting with lower extreme pressure manifold intercommunication, the upper end pressure manifold passes through communicating pipe and adjacent heat transfer unit's lower extreme pressure manifold intercommunication or the lower extreme pressure manifold passes through communicating pipe and adjacent heat transfer unit's upper end pressure manifold intercommunication. When the condenser is used as a condenser, the circulating medium in the flat tube group of the micro-channel is always kept to flow from top to bottom, so that the refrigerant is distributed more uniformly; when the heat exchanger is used as an evaporator, the circulating medium in the micro-channel flat tube group is always kept to flow from bottom to top, so that the drainage speed of condensed water and defrosting water is increased, the gas-liquid flow rule is met, the heat exchange performance is improved, and the micro-channel heat exchanger can be used as a heat pump evaporator.
Description
Technical Field
The embodiment of the utility model provides a relate to the heat exchanger device field, especially relate to a microchannel heat exchanger.
Background
The conventional microchannel heat exchanger structure used at present causes the refrigerant to flow mainly transversely therein due to its structural characteristics. For the condenser, the micro-channel heat exchanger with the traditional structure can realize the condensation effect, but the refrigerant is easily distributed unevenly among the flat tubes of the micro-channel and in the micro-channel of the same flat tube, and the refrigerant is condensed into a liquid state after releasing heat, and the heat exchange effect of the two-phase flow is reduced because the gas state is in the upper liquid state.
When the evaporator is used, the refrigerant is easily distributed unevenly among the flat tubes of the microchannel and in the microchannel of the same flat tube due to the transverse microchannel mode, the refrigerant is vaporized into a gaseous state after absorbing heat, the heat exchange effect of two-phase flow is reduced due to the fact that the gaseous state is in an upper liquid state, and the condensed water and the defrosting water are not easy to drain due to the high frosting speed, the low defrosting speed and the transverse microchannel structure, so that the heat exchange effect is poor and the use of the evaporator is influenced.
Thus, conventional microchannel heat exchanger configurations are typically used only as condensers and not as evaporators for heat pumps.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a microchannel heat exchanger for solve the poor problem of heat transfer effect of heat exchanger among the prior art.
An embodiment of the utility model provides a microchannel heat exchanger, including two at least heat transfer units, heat transfer unit includes upper end pressure manifold and the lower extreme pressure manifold that the average level set up, the upper end pressure manifold through the microchannel flat tube group of vertical setting with lower extreme pressure manifold intercommunication, the upper end pressure manifold passes through communicating pipe and adjacent heat transfer unit's lower extreme pressure manifold intercommunication or the lower extreme pressure manifold passes through communicating pipe and adjacent heat transfer unit's upper end pressure manifold intercommunication.
The heat exchanger comprises two heat exchange units, namely a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit comprises a first collecting pipe horizontally arranged at the upper end and a third collecting pipe horizontally arranged at the lower end, the second heat exchange unit comprises a second collecting pipe horizontally arranged at the upper end and a fourth collecting pipe horizontally arranged at the lower end, a first connector is arranged on one side of the first collecting pipe, and a second connector is arranged on one side of the fourth collecting pipe.
And the second collecting pipe is communicated with the third collecting pipe through a communicating pipe.
The heat exchanger comprises two heat exchange units, namely a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit comprises a first collecting pipe horizontally arranged at the upper end and a third collecting pipe horizontally arranged at the lower end, the second heat exchange unit comprises a second collecting pipe horizontally arranged at the upper end and a fourth collecting pipe horizontally arranged at the lower end, and the first collecting pipe and the second collecting pipe are formed by arranging a first partition plate along the length direction in one collecting pipe in a separated mode.
The third collecting pipe and the fourth collecting pipe are formed by arranging a second partition plate in one collecting pipe along the length direction for separation.
The first heat exchange unit comprises a first collecting pipe arranged at the upper end in a horizontal mode and a third collecting pipe arranged at the lower end in a horizontal mode, the second heat exchange unit comprises a second collecting pipe arranged at the upper end in a horizontal mode and a fourth collecting pipe arranged at the lower end in a horizontal mode, and the first collecting pipe and the second collecting pipe are formed by the fact that a third partition plate arranged inside one collecting pipe and along the cross section direction of the second collecting pipe is separated.
The third collecting pipe and the fourth collecting pipe are formed by separating a fourth partition plate which is arranged inside one collecting pipe and along the cross section direction of the collecting pipe.
The micro-channel flat pipe group is vertically arranged, an upper port of the micro-channel flat pipe group is communicated with one side of the upper end collecting pipe, and a lower port of the micro-channel flat pipe group is communicated with one side of the lower end collecting pipe.
The microchannel flat pipe group comprises a plurality of vertical flat pipes which are arranged in parallel and provided with microporous channels, and circulating media can circulate.
Wherein, be equipped with the fin between the adjacent flat pipe.
The embodiment of the utility model provides a microchannel heat exchanger, through the microchannel flat tube group of vertical arrangement realize the level set up in the collecting main of upper end and the collecting main of level setting at the lower extreme, and realize the intercommunication of two adjacent heat transfer units through communicating pipe, when making as the condenser, guarantee that the circulation medium in the microchannel flat tube group keeps flowing from top to bottom all the time, make the refrigerant distribution more even; when the heat exchanger is used as an evaporator, the circulating medium in the microchannel flat tube group is ensured to flow from bottom to top all the time, the drainage speed of condensed water and defrosting water is increased, the gas-liquid flow rule is met, the heat exchange performance is improved, and the microchannel heat exchanger can be used as a heat pump evaporator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 creative efforts.
Fig. 1 is a side view of a microchannel heat exchanger according to an embodiment of the present invention;
fig. 2 is a front view of a microchannel heat exchanger according to an embodiment of the present invention;
FIG. 3 is a side view of a second microchannel heat exchanger according to an embodiment of the present invention;
FIG. 4 is a front view of a second microchannel heat exchanger according to an embodiment of the present invention;
fig. 5 is a front view of a three-microchannel heat exchanger according to an embodiment of the present invention;
fig. 6 is a right side view of a three-microchannel heat exchanger according to an embodiment of the present invention.
In the figure, 1: a first header; 2: a first interface; 3: a first microchannel flat tube set; 4: a third header pipe; 5: a second header; 6: a communicating pipe; 7: a second microchannel flat tube set; 8: a second interface; 9: a fourth header pipe; 10: a fin; 11: a first separator; 12: a second separator; 13: a third partition plate; 14: and a fourth separator.
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 efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides a microchannel heat exchanger, including two at least heat transfer units, heat transfer unit includes upper end pressure manifold and the lower extreme pressure manifold that the average level set up, and the microchannel flat tube group that the upper end pressure manifold passes through vertical setting communicates with lower extreme pressure manifold, and the upper end pressure manifold passes through the upper end pressure manifold intercommunication that lower extreme pressure manifold intercommunication or lower extreme pressure manifold of communicating pipe and adjacent heat transfer unit pass through communicating pipe and adjacent heat transfer unit.
Example one
As shown in fig. 1 and fig. 2, the embodiment of the utility model provides a microchannel heat exchanger, be first heat transfer unit and second heat transfer unit respectively including two heat transfer units, specifically set up first pressure manifold 1, second pressure manifold 5 and the level of upper end and set up at third pressure manifold 4, fourth pressure manifold 9 of lower extreme including the level, first pressure manifold 1, second pressure manifold 5, third pressure manifold 4 and fourth pressure manifold 9 are parallel to each other. The first collecting pipe 1 is communicated with the third collecting pipe 4 through a first micro-channel flat pipe group 3, and the second collecting pipe 5 is communicated with the fourth collecting pipe 9 through a second micro-channel flat pipe group 7.
The first connector 2 is arranged on one side of the first collecting pipe 1, and the second connector 8 is arranged on one side of the fourth collecting pipe 9, so that a circulating medium can circularly flow in the micro-channel heat exchanger, and the heat exchange effect is ensured. The second header 5 is communicated with the third header 4 through a communicating pipe 6. When the microchannel heat exchanger is used as a condenser, a circulating medium enters the first collecting pipe 1 from the first connector 2, enters the third collecting pipe 4 through the first microchannel flat pipe group 3, enters the second collecting pipe 5 through the communicating pipe 6, enters the fourth collecting pipe 9 through the second microchannel flat pipe group 7, and finally flows out of the microchannel heat exchanger from the second connector 8. In the whole process, the circulating medium is in heat exchange flow from top to bottom in the micro-channel flat tube all the time, so that the distribution uniformity of the circulating medium is improved, and the heat exchange effect is high. When the microchannel heat exchanger is used as an evaporator, a circulating medium enters the microchannel heat exchanger from the second interface 8, sequentially passes through the fourth collecting pipe 9, the second microchannel flat pipe group 7, the communicating pipe 6, the third collecting pipe 4, the first microchannel flat pipe group 3 and the first collecting pipe 1, flows out of the microchannel heat exchanger from the first interface 2, and is subjected to heat exchange flow from bottom to top all the time in the microchannel flat pipe, so that the liquid-gas flow law is better met, condensed water and defrosting water are accelerated to be drained, the problem that the microchannel heat exchanger is uneven in liquid distribution when used as the evaporator is solved, and the heat exchange performance is improved.
Furthermore, the micro-channel flat pipe group is vertically arranged, the upper port of the micro-channel flat pipe group is communicated with one side of the upper end collecting pipe, and the lower port of the micro-channel flat pipe group is communicated with one side of the lower end collecting pipe. Specifically, the first microchannel flat tube group 3 and the second microchannel flat tube group 7 are both vertically arranged, and may be vertically arranged with the first header 1 and the second header 5 at the upper end, and the third header 4 and the fourth header 9 at the lower end, or the first microchannel flat tube group 3 and the second microchannel flat tube group 7 are obliquely arranged with an included angle larger than 0 degree and smaller than 90 degrees formed with the horizontal plane. And setting according to the actual construction process requirement.
Wherein, first microchannel flat tube group 3 and second microchannel flat tube group 7 all include the flat pipe that has microporous channel of a plurality of vertical parallel arrangement for make the circulation of circulating medium, improve circulating medium's distribution homogeneity, guarantee the heat transfer effect, be equipped with fin 10 between the adjacent flat pipe, increase heat transfer area, improve heat exchange efficiency.
Example two
As shown in fig. 3 and fig. 4, the second embodiment is substantially the same as the first embodiment, and for the sake of brevity, in the description process of the present embodiment, the technical features same as those of the first embodiment are not described again, and only the difference between the second embodiment and the first embodiment is described:
the first collecting pipe 1 and the second collecting pipe 5 are formed by separating a first partition plate 11 arranged in the length direction in the upper collecting pipe, so that the first collecting pipe 1 and the second collecting pipe 5 form independent circulating medium circulation channels without mutual interference.
The third collecting pipe 4 and the fourth collecting pipe 9 are formed by separating a second partition plate 12 arranged in the length direction in the lower collecting pipe, so that the third collecting pipe 4 and the fourth collecting pipe 9 form independent circulating medium circulation channels without mutual interference.
EXAMPLE III
As shown in fig. 5 and fig. 6, the third embodiment is substantially the same as the first embodiment, and for the sake of brevity of description, in the description process of the present embodiment, the technical features same as those of the first embodiment are not described again, and only the differences between the third embodiment and the first embodiment are described:
the first collecting pipe 1 and the second collecting pipe 5 are formed by separating a third partition plate 13 which is arranged inside the upper collecting pipe and along the cross section direction of the upper collecting pipe, so that the first collecting pipe 1 and the second collecting pipe 5 form independent circulating medium circulation channels without mutual interference.
The third collecting pipe 4 and the fourth collecting pipe 9 are formed by separating a fourth partition plate 14 which is arranged inside the lower end collecting pipe and along the cross section direction of the lower end collecting pipe, so that the third collecting pipe 4 and the fourth collecting pipe 9 form independent circulating medium circulation channels without mutual interference.
Specifically, the third partition plate 13 is arranged on one side of the communication pipe 6, and the fourth partition plate 14 is arranged on the other side of the communication pipe 6, so that the communication between the second collecting pipe 5 and the third collecting pipe 4 is realized, and the circulation of the circulating medium in the micro-channel heat exchanger is ensured.
The embodiment of the utility model provides a microchannel heat exchanger, through the microchannel flat tube group of vertical arrangement realize the level set up in the collecting main of upper end and the collecting main of level setting at the lower extreme, and realize the intercommunication of two adjacent heat transfer units through communicating pipe, when making as the condenser, guarantee that the circulation medium in the microchannel flat tube group keeps flowing from top to bottom all the time, make the refrigerant distribution more even; when the heat exchanger is used as an evaporator, the circulating medium in the microchannel flat tube group is ensured to flow from bottom to top all the time, the drainage speed of condensed water and defrosting water is increased, the gas-liquid flow rule is met, the heat exchange performance is improved, and the microchannel heat exchanger can be used as a heat pump evaporator.
Above embodiment only with two heat transfer units of heat exchange efficiency and technology demand setting, if set up a heat transfer unit in operational environment and can satisfy the heat exchange efficiency demand, also belong to the utility model discloses a protection scope.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The microchannel heat exchanger is characterized by comprising at least two heat exchange units, wherein each heat exchange unit comprises an upper end collecting pipe and a lower end collecting pipe which are arranged horizontally, the upper end collecting pipe is communicated with the lower end collecting pipe through a microchannel flat pipe group which is vertically arranged, the upper end collecting pipe is communicated with the adjacent lower end collecting pipe of the heat exchange unit through a communicating pipe, or the lower end collecting pipe is communicated with the adjacent upper end collecting pipe of the heat exchange unit through a communicating pipe.
2. The microchannel heat exchanger of claim 1, comprising two heat exchange units, namely a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit comprises a first header horizontally arranged at the upper end and a third header horizontally arranged at the lower end, the second heat exchange unit comprises a second header horizontally arranged at the upper end and a fourth header horizontally arranged at the lower end, a first connector is arranged on one side of the first header, and a second connector is arranged on one side of the fourth header.
3. The microchannel heat exchanger of claim 2, wherein the second header is in communication with the third header via a communication tube.
4. The microchannel heat exchanger according to claim 1, comprising two heat exchange units, namely a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit comprises a first header horizontally arranged at the upper end and a third header horizontally arranged at the lower end, the second heat exchange unit comprises a second header horizontally arranged at the upper end and a fourth header horizontally arranged at the lower end, and the first header and the second header are separated by a first partition plate arranged in one header along the length direction.
5. The microchannel heat exchanger of claim 4, wherein the third header and the fourth header are separated by a second separator plate disposed lengthwise within one header.
6. The microchannel heat exchanger according to claim 1, comprising two heat exchange units, which are a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit comprises a first header horizontally disposed at an upper end and a third header horizontally disposed at a lower end, the second heat exchange unit comprises a second header horizontally disposed at an upper end and a fourth header horizontally disposed at a lower end, and the first header and the second header are separated by a third partition plate disposed inside and along a cross-sectional direction of the first header.
7. The microchannel heat exchanger of claim 6, wherein the third header and the fourth header are separated by a fourth partition disposed within the header and along the cross-sectional direction of the header.
8. The microchannel heat exchanger of claim 1, wherein the microchannel flat tube set is vertically arranged, an upper port of the microchannel flat tube set is communicated with one side of the upper end header, and a lower port of the microchannel flat tube set is communicated with one side of the lower end header.
9. The microchannel heat exchanger of claim 8, wherein the microchannel flat tube set comprises a plurality of flat tubes with microporous channels arranged in parallel vertically for circulating a circulating medium.
10. The microchannel heat exchanger of claim 9, wherein fins are disposed between adjacent flat tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920102143.1U CN209820204U (en) | 2019-01-22 | 2019-01-22 | Micro-channel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920102143.1U CN209820204U (en) | 2019-01-22 | 2019-01-22 | Micro-channel heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN209820204U true CN209820204U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920102143.1U Expired - Fee Related CN209820204U (en) | 2019-01-22 | 2019-01-22 | Micro-channel heat exchanger |
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| CN (1) | CN209820204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764697A (en) * | 2019-01-22 | 2019-05-17 | 北京建筑大学 | Micro-channel heat exchanger |
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2019
- 2019-01-22 CN CN201920102143.1U patent/CN209820204U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764697A (en) * | 2019-01-22 | 2019-05-17 | 北京建筑大学 | Micro-channel heat exchanger |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 Termination date: 20210122 |