CN215810426U - Flow guide body, distribution device and evaporator - Google Patents
Flow guide body, distribution device and evaporator Download PDFInfo
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- CN215810426U CN215810426U CN202121647011.0U CN202121647011U CN215810426U CN 215810426 U CN215810426 U CN 215810426U CN 202121647011 U CN202121647011 U CN 202121647011U CN 215810426 U CN215810426 U CN 215810426U
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- flow guide
- evaporator
- guide body
- liquid collecting
- collecting pipe
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Abstract
The utility model belongs to the field of refrigeration equipment of gas-liquid two-phase refrigerants, and provides a flow guide body for an evaporator. The distribution device comprises the flow guide body and the accommodating part, the flow guide body is arranged in the accommodating part, the liquid inlet end of the flow guide body is aligned to the liquid inlet of the refrigerant, a plurality of cavities are formed between the flow guide body and the accommodating part at intervals through partition plates, at least one flow guide through hole is formed in each cavity, and one side of each cavity is communicated with the inlet of the heat exchange tube. There is also provided an evaporator comprising the above-described dispensing device. The guide body realizes that the guide of a plurality of channels can evenly distribute the refrigerant without adding additional mechanism for assistance, improves the heat conductivity of the evaporator, has compact structure and good reliability and stability, can directly replace a liquid collecting pipe, reduces manufacturing materials and further reduces the cost.
Description
Technical Field
The utility model relates to the field of refrigeration equipment of gas-liquid two-phase refrigerants, in particular to a flow guide body, a distribution device and an evaporator.
Background
In the heat exchange equipment, the evaporator is of a plurality of varieties and mainly comprises an inlet pipe, an outlet pipe, a heat exchange pipe and fins, a two-phase refrigerant is generally adopted, an inlet of the two-phase refrigerant is in a gas-liquid two-phase type, the specific gravity of gas and liquid has large difference, the refrigerant is easy to distribute unevenly, some local liquid and some gas are large, the refrigerant cannot be evenly distributed in the heat exchange pipes, and the heat conduction efficiency of the evaporator is influenced. Therefore, in the prior art, the refrigerant is uniformly sprayed onto the heat exchange tube by the distributor, so that the refrigerant and the heat exchange tube can exchange heat fully.
The copper pipe aluminum fin heat exchanger adopts the shower nozzle type distributor, sprays the refrigerant through the jet hole to form high-speed vaporific fluid, enters into the holes uniformly distributed at the periphery of the distributor, and then enters into the heat exchange tube through the capillary connecting tube, so that the refrigerant of each loop can be guaranteed to be uniformly subjected to liquid, and the phenomenon of drying or incomplete evaporation is avoided.
The microchannel heat exchanger can also adopt a shower head type distributor, but the hydraulic diameter of the microchannel is small, the tube pass of the microchannel heat exchanger is short, and a large number of branches exist. For uniform reception of liquid from each branch, a sufficient number of capillary connections are required on the dispenser of the showerhead to correspond thereto. The capillary connecting pipes are large in number and long in length, so that on one hand, the volume and the manufacturing materials of the distributor of the shower head are increased, and the production cost is increased, and on the other hand, the capillary pipes are suspended to vibrate, and the risk of refrigerant leakage exists.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the flow guide body of the evaporator, and the flow guide body has the advantages of uniform distribution, improved heat exchange and the like. The utility model also provides a distributor with the flow guide body. The utility model also provides an evaporator with the flow guide body and the distributor.
In order to achieve the above purpose, the technical solution of one aspect of the present invention is:
a flow guide body for an evaporator is provided with a plurality of flow guide channels, and each flow guide channel is provided with a flow guide through hole which penetrates through the side wall of the flow guide channel.
The technical scheme of the other aspect of the utility model is as follows:
the utility model provides a distributor for evaporimeter, includes above baffle and accepts the part, the baffle is located in acceping the part, the feed liquor end of baffle is just to the refrigerant inlet, the baffle with it forms a plurality of cavities through the baffle interval to accept between the part, every have at least one in the cavity the water conservancy diversion through-hole, cavity one side and the import intercommunication of heat exchange tube.
In some preferred embodiments, the receiving member is a cylinder, and the flow guiding body is coaxial with and fixed in the receiving member.
In some preferred embodiments, the flow guiding body is cylindrical, and the flow guiding channels are all in the same cylindrical shape or drop shape and are distributed circumferentially around the central axis of the flow guiding body at equal intervals.
In some preferred embodiments, each of the flow guide channels is provided with the same number of flow guide through holes.
In some preferred embodiments, the flow guiding through holes are spirally distributed along the central axis of the flow guiding body.
In some preferred embodiments, two ends of the accommodating part are sealed, an opening is formed in a side wall of the accommodating part, which is closer to the liquid inlet end of the flow guiding body, and a liquid inlet device with a refrigerant liquid inlet extends into the accommodating part through the opening.
The technical scheme of the utility model on the other hand is as follows:
an evaporator comprises the above flow guide body, the above distribution device and the heat exchange tubes, wherein the distribution device and the heat exchange tubes are correspondingly arranged, and the number of the heat exchange tubes corresponding to each cavity is two or three.
In some preferred embodiments, the distribution device is connected with the liquid collecting pipe through a connecting pipe, a liquid collecting pipe partition plate is arranged on the liquid collecting pipe, the liquid collecting pipe partition plate and the liquid collecting pipe form a liquid collecting pipe partition, the liquid collecting pipe partition plate and the cavity are in one-to-one correspondence, and the liquid inlet end of the heat exchange pipe is fixedly installed on the installation hole in the side wall of the liquid collecting pipe and extends into the liquid collecting pipe partition.
In some preferred embodiments, the distribution device is a liquid collecting pipe, and the liquid inlet end of the heat exchange pipe is fixedly arranged on a mounting hole in the side wall of the distribution device and extends into the cavity.
Compared with the prior art, the utility model has the following beneficial effects and advantages:
the flow guide body of the evaporator is simple in structure, convenient to manufacture, good in refrigerant distribution effect and capable of improving heat exchange efficiency, the distribution device is made of sectional materials, brazing combination is carried out in a furnace, production and manufacturing are facilitated, and the appearance structure is compact. Compared with a shower head heat exchanger, the heat exchanger is not easy to break and has high stability and reliability. In addition, the hydraulic diameter of the flow guide channel is much smaller than the outer diameter of a capillary tube adopted by the shower head heat exchanger, the number of distribution channels of the distribution device is large, the volume is small, and the occupied space is small. In addition, the distribution channel can be integrated into a liquid collecting pipe of the micro-channel heat exchanger, namely, the distribution device can directly replace the liquid collecting pipe, so that the manufacturing materials are reduced, and the cost is further reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1: the embodiment of the utility model is a schematic diagram of a distribution device;
FIG. 2: the distribution device, the liquid collecting pipe and the heat exchange pipe are structurally schematic;
FIG. 3: the distribution device and the heat exchange tube of another embodiment of the utility model are schematically shown in structure;
FIG. 4: the flow guide body of the embodiment of the utility model is in a schematic structural diagram in a top view;
in the figure: 100. a dispensing device; 110. a flow conductor; 111. a flow guide channel; 112. a flow guide through hole; 120. a housing member; 121. a partition plate; 122. an opening; 200. a liquid inlet device; 210. a refrigerant inlet; 130. A chamber; 300. a heat exchange pipe; 400. a connecting pipe; 500. a liquid collecting pipe; 510. a liquid collecting pipe clapboard; 520. and the liquid collecting pipe is partitioned.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1, 2 and 3, a flow guiding body 110 for an evaporator is provided with a plurality of flow guiding channels 111 in the flow guiding body 110, each flow guiding channel 111 is provided with a flow guiding through hole 112 penetrating through a side wall of the flow guiding channel 111, the flow guide body has simple structure and easy manufacture, and in practical application, after the refrigerant is sprayed through the refrigerant liquid inlet 210, the split flow enters each flow guide channel 111 of the flow guide body 100, then enters the cavity 130 communicated with the flow guide through holes 112 through each flow guide through hole 112 on the side wall of the flow guide channel 111, gas and liquid are balanced at a refrigerant inlet, the flow guide body can uniformly distribute the refrigerant through the flow guide of a plurality of channels on the basis of not adding additional mechanism assistance, the heat conductivity of the evaporator is improved, the flow guide body is a single body, the processing difficulty is low, and the micro-channel heat exchanger with a short tube pass has good applicability.
Referring to fig. 1, 2 and 3, a distribution device 100 for an evaporator includes an upper fluid guiding body 110 and a receiving part 120, wherein the fluid guiding body 110 is disposed in the receiving part 120, a liquid inlet end of the fluid guiding body 110 faces a liquid inlet 210 of a refrigerant, a plurality of chambers 130 are formed between the fluid guiding body 110 and the receiving part 120 at intervals by partitions 121, at least one fluid guiding through hole 112 is formed in each chamber 130, and one side of each chamber 130 is communicated with an inlet of a heat exchange tube 300.
In one embodiment, the receiving member 120 is a cylinder, and the current carrier 110 is fixed in the receiving member 120 coaxially with the receiving member. Through the design, the flow guide body is fixed on the accommodating part, the stress uniformity of the flow guide body 1 is improved, the relative position of the flow guide body and the accommodating part can be kept, and the vibration is reduced.
As an implementation manner, the flow conductor 110 is cylindrical, the flow guide channels 111 are all in the same cylindrical shape or drop shape and are circumferentially distributed around the central axis of the flow conductor 110 at equal intervals, the flow conductor and the flow guide channels are both in the regular cylindrical shape and are convenient to manufacture, and in addition, the flow guide channels 111 are in the drop shape, so that the flow cross-sectional area of the flow conductor is reduced, the structural performance of the flow conductor 110 is optimized, and the flow guide channels are also easy to process.
As an implementation manner, each of the flow guide channels 111 is provided with the same number of flow guide through holes 112, the number of the flow guide through holes 112 may be one or more, and the refrigerant flowing into each of the flow guide channels 111 flows out from the flow guide through holes 112, so that the refrigerant flowing out from the flow guide through holes has a higher pressure, and the refrigerant flow is ensured to match the air speed of the flow channel. The flow guide through holes 112 are spirally distributed along the central axis of the flow guide body 110, so that when the refrigerant is actually used, the refrigerant is spirally sprayed in the cavity, the vibration of the flow guide channel 111 is reduced, the relative position of the flow guide channel 111 and the refrigerant liquid inlet 210 is kept, the liquid inlet amount is maintained, and the noise is reduced.
As an implementable manner, two ends of the accommodating part 120 are sealed, an opening 122 is formed in a side wall of the accommodating part 120 close to a liquid inlet end of the flow conductor 110, the liquid inlet device 200 with the refrigerant liquid inlet 210 passes through the opening 122 and extends into the accommodating part 120, the refrigerant liquid inlet 210 and the flow conductor 110 are both fixed in the outer cylinder, the distance between the refrigerant liquid inlet 210 and the liquid inlet end of the flow conductor is shortened, the liquid inlet efficiency of the refrigerant is improved, and in addition, the refrigerant liquid inlet 210 is fixed in the outer cylinder, so that the refrigerant liquid inlet is not easily damaged by external force, and the service life of the refrigerant liquid inlet device is prolonged.
The distribution device is made of sectional materials, is combined by brazing in a furnace, is convenient to process and manufacture, has compact appearance structure, high stability and reliability, difficult fracture and long service life compared with a shower head type heat exchanger. In addition, the hydraulic diameter of the flow guide channel can be much smaller than the outer diameter of a capillary tube adopted by the shower head heat exchanger, and the distribution channels of the distribution device are more in number but smaller in volume.
As shown in fig. 2 and 2, an evaporator includes the above current carrier 110, the above distribution device 100 and the heat exchange tubes 300, the distribution device 100 and the heat exchange tubes 300 are correspondingly disposed, the number of the heat exchange tubes 300 corresponding to each chamber 130 is two or three, the specific number of the heat exchange tubes 300 corresponding to each chamber 130 is determined according to the wind field of the evaporator, and experiments prove that the distribution effect is better when the specific number is controlled to be 2 or 3.
Referring to fig. 2, the distribution device 100 is connected to the liquid collecting tube 500 through a connection tube 400, preferably, both ends of the connection tube 400 are respectively welded to the distribution device 100 and the liquid collecting tube 500, the welding process is simple and easy to operate, and the sealing performance of the entire evaporator is good, a liquid collecting tube partition 510 is disposed on the liquid collecting tube 500, the liquid collecting tube partition 510 and the liquid collecting tube 500 form a liquid collecting tube partition 520, the liquid collecting tube partition 520 is in one-to-one correspondence with the cavity 130, and the liquid inlet end of the heat exchange tube 300 is fixedly mounted on the mounting hole of the side wall of the liquid collecting tube 500 and extends into the liquid collecting tube partition 520.
As an implementable manner, the distribution device 100 is a liquid collecting pipe 500, the liquid inlet end of the heat exchange pipe 300 is fixedly mounted on the mounting hole on the side wall of the distribution device 100 and extends into the chamber 130, the above structural design integrates the distribution channel into the evaporator and the liquid collecting pipe, the manufacturing cost can be further reduced, the occupied space for distribution outside the heat exchanger can be reduced, compared with a shower head type distributor, a multi-capillary pipeline is not adopted, and the risk of refrigerant leakage caused by the adoption of the multi-capillary pipeline is avoided.
The working process of the evaporator in actual work comprises the following steps:
after being injected through the refrigerant inlet 210, the refrigerant is divided to enter each flow guide channel 111 of the flow guide body 100, then enters the cavity 130 communicated with the flow guide through holes 112 through each flow guide through hole 112 on the side wall of the flow guide channel 111, then enters the liquid collecting pipe partition 520 through the connecting pipe 400, and finally enters the heat exchange pipe 300. Note that, in the evaporator in which the distribution device 100 directly serves as the liquid collecting tube, the distribution device 100 is directly connected to the heat exchanging tube 300, and the refrigerant directly enters the heat exchanging tube 300 after entering the chamber 130.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A flow conductor for an evaporator, comprising: a plurality of flow guide channels are arranged in the flow guide body, and each flow guide channel is provided with a flow guide through hole which penetrates through the side wall of the flow guide channel.
2. A dispensing device for an evaporator, comprising: the refrigerant heat exchanger comprises the flow guide body and a containing part as claimed in claim 1, wherein the flow guide body is arranged in the containing part, the liquid inlet end of the flow guide body is opposite to the liquid inlet of a refrigerant, a plurality of cavities are formed between the flow guide body and the containing part at intervals through partition plates, at least one flow guide through hole is formed in each cavity, and one side of each cavity is communicated with the inlet of a heat exchange tube.
3. A dispensing apparatus for an evaporator, as set forth in claim 2, wherein: the accommodating part is a cylinder, and the flow guide body is coaxial with the accommodating part and is fixed in the accommodating part.
4. A dispensing apparatus for an evaporator, as set forth in claim 2, wherein: the flow guide body is cylindrical, and the flow guide channels are all in the same cylindrical shape or drop shape and are distributed around the central shaft of the flow guide body at equal intervals.
5. A dispensing apparatus for an evaporator, as set forth in claim 2, wherein: each flow guide channel is provided with flow guide through holes with the same number.
6. A dispensing apparatus for an evaporator, as set forth in claim 2, wherein: the flow guide through holes are spirally distributed along the central axis of the flow guide body.
7. A dispensing apparatus for an evaporator, as set forth in claim 2, wherein: the two ends of the accommodating part are sealed, an opening is formed in the side wall, close to the liquid inlet end of the flow guide body, of the accommodating part, and a liquid inlet device with a refrigerant liquid inlet penetrates through the opening to extend into the accommodating part.
8. An evaporator, characterized by: comprising a flow conductor according to claim 1 and distribution devices and heat exchange tubes according to claims 2-7, wherein the distribution devices and the heat exchange tubes are arranged correspondingly, and the number of the heat exchange tubes corresponding to each chamber is two or three.
9. An evaporator according to claim 8 wherein: the distributing device is connected with the liquid collecting pipe through the connecting pipe, a liquid collecting pipe partition plate is arranged on the liquid collecting pipe and forms a liquid collecting pipe partition with the liquid collecting pipe, the liquid collecting pipe partition plate corresponds to the cavity in a one-to-one mode, and the liquid inlet end of the heat exchange pipe is fixedly installed on the installation hole of the side wall of the liquid collecting pipe and extends into the liquid collecting pipe partition plate.
10. An evaporator according to claim 8 wherein: the distribution device is a liquid collecting pipe, and the liquid inlet end of the heat exchange pipe is fixedly installed on the installation hole in the side wall of the distribution device and extends into the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647011.0U CN215810426U (en) | 2021-07-17 | 2021-07-17 | Flow guide body, distribution device and evaporator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647011.0U CN215810426U (en) | 2021-07-17 | 2021-07-17 | Flow guide body, distribution device and evaporator |
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| Publication Number | Publication Date |
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| CN215810426U true CN215810426U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121647011.0U Active CN215810426U (en) | 2021-07-17 | 2021-07-17 | Flow guide body, distribution device and evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432479A (en) * | 2021-07-17 | 2021-09-24 | 江苏科菱库精工科技有限公司 | Flow guide body, distribution device and evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432479A (en) * | 2021-07-17 | 2021-09-24 | 江苏科菱库精工科技有限公司 | Flow guide body, distribution device and evaporator |
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