CN210951988U - Evaporative condenser and heat exchange system - Google Patents
Evaporative condenser and heat exchange system Download PDFInfo
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- CN210951988U CN210951988U CN201921813934.1U CN201921813934U CN210951988U CN 210951988 U CN210951988 U CN 210951988U CN 201921813934 U CN201921813934 U CN 201921813934U CN 210951988 U CN210951988 U CN 210951988U
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Abstract
The application discloses an evaporative condenser and a heat exchange system. The evaporative condenser comprises a water inlet main pipe, a spray pipe and heat exchange plates; the spray pipe is connected with the water inlet main pipe and comprises a first spray pipe and a second spray pipe, the first spray pipe and the second spray pipe are both provided with water outlets, and the axial direction of the first spray pipe and the axial direction of the second spray pipe form a non-zero included angle; the heat exchange plate is arranged below the water inlet main pipe and between the first spray pipe and the second spray pipe, and comprises a first heat exchange plate surface and a second heat exchange plate surface which are oppositely arranged; the water outlet of the first spray pipe faces the first heat exchange plate surface, and the water outlet of the second spray pipe faces the second heat exchange plate surface. Through the position that sets up first spray tube and second spray tube, make the delivery port of first spray tube and second spray tube can be towards the surface of the difference of heat transfer slab to make the spray tube can spray liquid to the surface of heat transfer slab more directly, more uniformly, avoid the waste of liquid, avoid appearing the dry zone on the heat transfer slab, promoted heat exchange efficiency.
Description
Technical Field
The application relates to the field of heat exchange, in particular to an evaporative condenser and a heat exchange system.
Background
The evaporative condenser is a main heat exchange device in a heat exchange system and is formed by combining a fan, a heat exchange plate, a box body and the like. The refrigerant passes through the heat exchange plate in the evaporative condenser, so that the high-temperature gaseous refrigerant exchanges heat with spray water and air outside the heat exchange plate. Namely, the gaseous refrigerant is gradually condensed into the liquid refrigerant from top to bottom after entering the heat exchange plate from the liquid inlet.
The existing evaporative condenser adopts two spraying modes of traditional umbrella-shaped spraying and rain curtain spraying, but the umbrella-shaped spraying has high water consumption, and the rain curtain spraying easily forms a dry area on a heat exchange plate sheet to influence the heat exchange efficiency.
SUMMERY OF THE UTILITY MODEL
The application provides an evaporative condenser and heat transfer system, it can effectively spray the heat transfer board piece, avoids appearing the dry area on the heat transfer board piece.
According to a first aspect of the present application there is provided an evaporative condenser comprising:
a main water inlet pipe for conveying liquid;
the spray pipe is connected with the water inlet main pipe and comprises a first spray pipe and a second spray pipe, water outlets are formed in the first spray pipe and the second spray pipe, and a non-zero included angle is formed between the axial direction of the first spray pipe and the axial direction of the second spray pipe;
the heat exchange plate is arranged below the water inlet main pipe and between the first spray pipe and the second spray pipe, and comprises a first heat exchange plate surface and a second heat exchange plate surface which are oppositely arranged;
the water outlet of the first spray pipe faces towards the first heat exchange plate surface, and the water outlet of the second spray pipe faces towards the second heat exchange plate surface.
Further, an included angle formed by the axis of the first spray pipe and the plane where the heat exchange plate is located is a first included angle, and an included angle formed by the axis of the second spray pipe and the plane where the heat exchange plate is located is a second included angle;
the first included angle and/or the second included angle is larger than or equal to 30 degrees and smaller than or equal to 75 degrees.
Further, along the axial direction of the water inlet main pipe, the first spray pipes and the second spray pipes are arranged at intervals.
Further, a first through groove is formed in the first spray pipe along the circumferential direction, and the first through groove forms a water outlet of the first spray pipe; the central angle corresponding to the first through groove is greater than or equal to 90 degrees and less than or equal to 180 degrees; and/or the presence of a gas in the gas,
the second spray pipe is provided with a second through groove along the circumferential direction, and the second through groove forms a water outlet of the second spray pipe; the central angle corresponding to the second through groove is not less than 90 degrees and not more than 200 degrees.
Further, the angle of the central angle corresponding to the first through groove is 180 degrees; and/or the presence of a gas in the gas,
the angle of the central angle corresponding to the second through groove is 180 degrees.
Furthermore, a through water passing space is arranged in the water inlet main pipe, and one end of the spray pipe extends into the water passing space.
Furthermore, the length of the spray pipe extending into the water passing space is more than or equal to 3 mm and less than or equal to 5 mm.
Furthermore, the evaporative condenser also comprises a liquid supply system, one end of the water inlet main pipe is connected with the liquid supply system, and the other end of the water inlet main pipe is detachably connected with a pipe cap.
Further, the water outlet of the first spray pipe and/or the water outlet of the second spray pipe face the upper portion of the heat exchange plate.
According to a second aspect of the present application, there is provided a heat exchange system comprising an evaporative condenser as described above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
through the position that sets up first spray tube and second spray tube, the delivery port that makes first spray tube and second spray tube can be towards the different surfaces that are used for the heat transfer of heat transfer slab to make the spray tube can more directly, more evenly spray liquid to the surface of heat transfer slab, avoid the waste of liquid, avoid appearing the dry zone on the heat transfer slab, promoted heat exchange efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
Fig. 1 is a schematic structural diagram of an evaporative condenser according to an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view of an evaporative condenser according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a main water inlet pipe and a spray pipe according to an embodiment of the present application.
Fig. 4 is a schematic sectional structure view of the main water inlet pipe and the spray pipe according to an embodiment of the present application.
FIG. 5 is another sectional view of the main water inlet pipe and the nozzle according to an embodiment of the present disclosure.
FIG. 6 is a schematic sectional view of the main water inlet pipe and the nozzle according to another embodiment of the present application.
FIG. 7 is a schematic plan view of a nozzle according to an embodiment of the present application.
FIG. 8 is another schematic plan view of a nozzle according to an embodiment of the present application.
Description of the reference numerals
Main pipe for water intake 100
The first through groove 211
Second through groove 221
First heat transfer plate 310
Second heat transfer plate 320
Pipe cap 600
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
The present application relates to an evaporative condenser. The evaporative condenser can be applied to a heat exchange system, the heat exchange system can also comprise a compressor, an economizer and other devices, and the evaporative condenser can receive overheated, high-pressure and gaseous refrigerant discharged from the compressor and cool the refrigerant so as to supply other devices in the heat exchange system for heat exchange.
As shown in fig. 1, the evaporative condenser 10 includes a main water inlet pipe 100, a spray pipe 200, heat exchange plates 300, a fan 400, and a liquid supply system 500.
Wherein, the main water inlet pipe 100 is connected and communicated with the liquid supply system 500 to receive the liquid for cooling the refrigerant transmitted in the liquid supply system 500. The liquid supply system 500 includes a header tank 510 and a liquid pump 520, and the liquid pump 520 supplies the liquid in the header tank 510 to the water inlet main 100. In this embodiment, the liquid in the liquid supply system 500 is water, but may be other liquid for heat exchange in other embodiments. Hereinafter, the liquid used for cooling in the liquid supply system 500 is referred to as cooling liquid.
As shown in fig. 1 and 2, the water supply main pipe 100 is provided with a water passing space 101 therethrough, and the water passing space 101 is used for conveying the cooling liquid from the liquid supply system 500. The spray pipe 200 is connected and communicated with the main water inlet pipe 100, that is, the spray pipe 200 is communicated with the water passing space 101 and is used for receiving the cooling liquid in the main water inlet pipe 100 and spraying the cooling liquid to the surface of the heat exchange plate 300.
The fan 400 is located above the main water inlet pipe 100, and the heat exchange plate 300 is disposed below the main water inlet pipe 100. The heat exchange plate 300 comprises a liquid inlet 301 and a liquid outlet 302, and the superheated refrigerant enters the heat exchange plate 300 through the liquid inlet 301 and flows out of the heat exchange plate 300 through the liquid outlet 302 of the heat exchange plate 300. In the process, the liquid pump 520 in the evaporative condenser 10 is turned on, and the cooling liquid in the water collecting tank 510 enters the spray pipe 200 through the water inlet main pipe 100 and is sprayed to the heat exchange plates 300 through the spray pipe 200. After the cooling liquid is sprayed to the surface of the heat exchange plate 300, the surface of the heat exchange plate 300 is covered with a layer of water film formed by the cooling liquid from top to bottom, the heat of the refrigerant in the heat exchange plate 300 is transferred to the cooling liquid through the heat exchange plate 300, the cooling liquid falls into the liquid collecting tank 510 below again due to the action of gravity, the cooling liquid in the liquid collecting tank 510 is re-conveyed to the water inlet main pipe 100 by the liquid pump 520 again, and is sprayed to the surface of the heat exchange plate 300 from the spray pipe 200 again to form the circulation of the cooling liquid. The fan 400 located at the top operates to accelerate the flow of air, and the fan 400 can draw the air below upward, so that the air below can accelerate to pass through the heat exchange plate 300 and the surface of the water film covering the heat exchange plate 300, absorb heat in the water film and the heat exchange plate 300, and discharge the heat to the outside, thereby improving the heat exchange efficiency of the evaporative condenser 10.
In the present embodiment, the nozzle 200 includes a first nozzle 210 and a second nozzle 220, and the first nozzle 210 and the second nozzle 220 are both provided with the water outlet 201. The axial direction of first nozzle 210 and the axial direction of second nozzle 220 form a non-zero included angle. The heat exchanger plate 300 is disposed between the first nozzle 210 and the second nozzle 220, and the heat exchanger plate 300 includes a first heat exchanging plate surface 310 and a second heat exchanging plate surface 320 which are disposed opposite to each other for exchanging heat. The water outlet 201 of the first nozzle 210 faces the first heat exchange plate surface 310, and the water outlet 201 of the second nozzle 220 faces the second heat exchange plate surface 320.
In the above arrangement, the water outlet 201 of the first spray pipe 210 and the water outlet 201 of the second spray pipe 220 face the first heat exchange plate surface 310 and the second heat exchange plate surface 320 of the heat exchange plate 300, respectively, so that the cooling liquid flowing out of the water outlet 201 of the first spray pipe 210 can perform fan-shaped spraying on the first heat exchange plate surface 310, and the cooling liquid flowing out of the water outlet 201 of the second spray pipe 220 can perform fan-shaped spraying on the second heat exchange plate surface 320. Through the above setting, spray tube 200 can be better, more direct, spray the coolant liquid to heat transfer plate 300's surface more evenly, avoid causing the waste of coolant liquid, and the area that first heat transfer face 310 and second heat transfer face 320 contacted the coolant liquid that spray tube 200 sprayed out promotes by a wide margin to dry district appears on avoiding heat transfer plate 300, thereby has promoted heat exchange efficiency.
In the rain curtain spraying in the existing design, the coolant drops onto the heat exchange plate 300 from above, and the contact area between the coolant and the first heat exchange plate surface 310 and the second heat exchange plate surface 320 is too small, so that the temperatures of the first heat exchange plate surface 310 and the second heat exchange plate surface 320 at the positions are not uniform, and the continuous water film covering of the first heat exchange plate surface 310 and the second heat exchange plate surface 320 at the positions cannot be ensured. Therefore, the heat exchange plate 300 is easy to have scaling phenomenon, which affects the heat exchange efficiency. The evaporative condenser 10 can continuously and effectively spray the first heat exchange plate surface 310 and the second heat exchange plate surface 320, ensures that the first heat exchange plate surface 310 and the second heat exchange plate surface 320 are covered by a water film in real time, avoids scaling and ensures heat exchange efficiency. In the umbelliform in current design sprays, spray tube 200 sets up in the top of heat transfer plate 300, and delivery port 201 spun coolant liquid becomes the umbelliform and sprays to the surface of heat transfer plate 300, and at this in-process, the coolant liquid that is the umbelliform and sprays has covered heat transfer plate 300, has also covered the clearance between the adjacent heat transfer plate 300 simultaneously to obstructed the flow that fan 400 drove the air, be unfavorable for the heat transfer. In the evaporative condenser 10 of the present application, the heat exchange plate 300 is disposed between the first spray pipe 210 and the second spray pipe 220, and the water outlets 201 of the first spray pipe 210 and the second spray pipe 220 directly face the first heat exchange plate surface 310 and the second heat exchange plate surface 320 of the heat exchange plate 300, so as to perform a spray cooling process thereon. In this process, the cooling liquid is directly sprayed onto the first heat exchange plate surface 310 and the second heat exchange plate surface 320, so that the invalid space occupied by the sprayed cooling liquid can be reduced, in other words, when the plurality of heat exchange plates 300 are arranged at intervals, the occupied space of the cooling liquid on the gaps between the adjacent heat exchange plates 300 can be reduced. When the fan 400 is turned on, the fan 400 rotates to drive the air in the evaporative condenser 10 to move from bottom to top and cool the cooling liquid. In this process, air can smoothly flow through the gaps between the adjacent heat exchange plates 300. Therefore, the evaporative condenser 10 in this embodiment does not occupy too much air flow space, and enhances heat exchange efficiency.
Further, the included angle formed by the axis of the first nozzle 210 and the plane where the heat exchange plate 300 is located is a first included angle α 1, the included angle formed by the axis of the second nozzle 220 and the plane where the heat exchange plate 300 is located is a second included angle α 2, the first included angle α 1 and/or the second included angle α 2 is greater than or equal to 30 degrees and less than or equal to 75 degrees, through the above arrangement, the positions of the first nozzle 210 and the second nozzle 220 and the heat exchange plate 300 can be ensured to be proper, and a large number of experiments show that when the values of the first included angle α 1 and the second included angle α 2 are within the above range, the water outlets 201 of the first nozzle 210 and the second nozzle 220 can be ensured to effectively spray cooling liquid to the first heat exchange plate surface 310 and the second heat exchange plate surface 320 of the heat exchange plate 300, and the cooling liquid relatively uniformly covers the first heat exchange plate surface 310310 and the second heat exchange plate surface 320.
In this embodiment, the first included angle α 1 and the second included angle α 2 have the same value, but of course, in other embodiments, the values of the first included angle α 1 and the second included angle α 2 may vary depending on the shape and thickness of the heat exchanger plates 300, the relative positions of the nozzle 200 and the heat exchanger plates, and other factors.
Further, the water outlet 201 of the first nozzle 210 and/or the water outlet 201 of the second nozzle 220 face the upper portion of the heat exchanger plate 300. Through the arrangement, the phenomenon that the temperature is too high due to the fact that the upper end of the heat exchange plate 300 cannot be wrapped by the water film can be avoided. It should be noted that the upper portion of the heat exchanger plate 300 referred to herein is the portion of the heat exchanger plate 300 along the vertical direction 1/5 and above.
As shown in fig. 3 and 5, the first spray pipes 210 and the second spray pipes 220 are arranged at intervals along the axial direction of the main water inlet pipe 100. Through the arrangement, both the first heat exchange plate surface 310 and the second heat exchange plate surface 320 can be effectively covered by the water film. Meanwhile, as shown in fig. 6, when the heat exchanger plate 300 is corrugated, the first spray pipes 210 and the second spray pipes 220 arranged at intervals can better adapt to the shape of the heat exchanger plate 300, so that the distances between the surfaces of the first spray pipes 210 and the second spray pipes 220 and the heat exchanger plate 300 are relatively uniform, and the first heat exchange plate surface 310 and the second heat exchange plate surface 320 can receive relatively uniform cooling liquid.
As shown in fig. 4, 7 and 8, in the present embodiment, the first nozzle 210 is provided with a first through groove 211 along the circumferential direction, and the first through groove 211 forms the water outlet 201 of the first nozzle 210. The central angle of the first through groove 211 is 90 degrees or more and 180 degrees or less. And/or the second spray pipe 220 is provided with a second through groove 221 along the circumferential direction, and the second through groove 221 forms the water outlet 201 of the second spray pipe 220. The central angle of the second through groove 221 is 90 degrees or more and 200 degrees or less.
A large number of experiments show that when the central angles corresponding to the first through groove 211 and the second through groove 221 are within the above range, it can be ensured that the cooling liquid sprayed from the first through groove 211 and the second through groove 221 can be in a fan-shaped spraying form, so that the areas of the first heat exchange plate surface 310 and the second heat exchange plate surface 320, which can receive the cooling liquid, are increased, the distribution of the cooling liquid on the first heat exchange panel 310 and the second heat exchange panel 320 is more uniform, the area of the water film is larger, and the heat exchange efficiency is improved. Meanwhile, by limiting the angles of the first through groove 211 and the second through groove 221 corresponding to the central angles, it is possible to prevent the strength of the first nozzle 210 and the second nozzle 220 from being affected by the excessively large angles.
In this embodiment, the angle of the central angle corresponding to the first through groove 211 is 180 degrees, and the angle of the central angle corresponding to the second through groove 221 is 180 degrees. Through a lot of experiments, when the central angle of the first through groove 211 and the central angle of the second through groove 221 are 180 degrees, the cooling liquid sprayed through the first through groove 211 and the second through groove 221 can form a fan-shaped spraying area with the central angle of 120 degrees, so that the first heat exchange plate surface 310 and the second heat exchange plate surface 320 can be better covered by the cooling liquid. Of course, in other embodiments, only the angle of the first through groove 211 or the second through groove 221 may be 180 degrees.
As shown in fig. 1 and 2, during actual use, impurity particles remain in the water collection tank, and a part of the impurity particles enters the water passing space 101 of the main water inlet pipe 100 along with the pressurizing of the cooling liquid by the liquid pump 520 and deposits on the inner pipe wall of the main water inlet pipe 100. Referring to fig. 4, in the embodiment, one end of the nozzle 200 extends into the water passing space 101, so that the impurity particles deposited in the water inlet main pipe 100 can be prevented from being sprayed onto the surface of the heat exchange plate 300 through the first nozzle 210 and/or the second nozzle 220, which affects the heat exchange efficiency. At the same time, the foreign particles can be prevented from blocking the first nozzle 210 and the second nozzle 220, especially the water outlet 201.
A large number of experiments show that when the length L of the spray pipe 200 extending into the water passing space 101 is greater than or equal to 3 mm and less than or equal to 5 mm, the impurity particles can be effectively prevented from entering or blocking the first spray pipe 210 and the second spray pipe 220. At the same time, the flow of the cooling liquid in the supercooling space, which is obstructed by the excessive extension of the spray pipe 200 into the water space 101, can also be avoided.
As shown in fig. 1, further, one end of the main water inlet pipe 100 is connected to the liquid supply system 500, and the other end is detachably connected to a pipe cap 600. Through the above arrangement, when the impurity particles are piled up too much in the water inlet main pipe 100, or the water inlet main pipe 100 breaks down and needs to be maintained, the pipe cap 600 and the water inlet main pipe 100 can be separated, so that the water inlet main pipe 100 is internally subjected to pollution discharge, maintenance and other work, the operation is simplified, and the service life of the water inlet main pipe 100 is conveniently prolonged. In this embodiment, the main water inlet pipe 100 and the pipe cap 600 are connected by a screw thread, and of course, in other embodiments, the main water inlet pipe 100 and the pipe cap 600 may be fixed by other detachable connection methods.
Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.
Claims (10)
1. An evaporative condenser, comprising:
a main water inlet pipe for conveying liquid;
the spray pipe is connected with the water inlet main pipe and comprises a first spray pipe and a second spray pipe, water outlets are formed in the first spray pipe and the second spray pipe, and a non-zero included angle is formed between the axial direction of the first spray pipe and the axial direction of the second spray pipe;
the heat exchange plate is arranged below the water inlet main pipe and between the first spray pipe and the second spray pipe, and comprises a first heat exchange plate surface and a second heat exchange plate surface which are oppositely arranged;
the water outlet of the first spray pipe faces towards the first heat exchange plate surface, and the water outlet of the second spray pipe faces towards the second heat exchange plate surface.
2. The evaporative condenser, as recited in claim 1, wherein the axis of said first nozzle and the plane of said heat exchange plates form a first angle, and the axis of said second nozzle and the plane of said heat exchange plates form a second angle;
the first included angle and/or the second included angle is larger than or equal to 30 degrees and smaller than or equal to 75 degrees.
3. The evaporative condenser, as recited in claim 1, wherein said first and second nozzles are spaced apart along the axial direction of said water inlet main.
4. The evaporative condenser, as recited in claim 1, wherein said first nozzle is circumferentially provided with a first through groove, said first through groove forming a water outlet of said first nozzle; the central angle corresponding to the first through groove is greater than or equal to 90 degrees and less than or equal to 180 degrees; and/or the presence of a gas in the gas,
the second spray pipe is provided with a second through groove along the circumferential direction, and the second through groove forms a water outlet of the second spray pipe; the central angle corresponding to the second through groove is not less than 90 degrees and not more than 200 degrees.
5. The evaporative condenser, as recited in claim 4, wherein the first through groove corresponds to a central angle of 180 degrees; and/or the presence of a gas in the gas,
the angle of the central angle corresponding to the second through groove is 180 degrees.
6. The evaporative condenser, as recited in claim 1, wherein the water inlet main pipe is provided therein with a through water passing space, and one end of the spray pipe is extended into the water passing space.
7. The evaporative condenser, as recited in claim 6, wherein the length of said nozzle tube extending into said water passing space is 3 mm or more and 5 mm or less.
8. The evaporative condenser, as recited in claim 1, further comprising a liquid supply system, wherein one end of said main water inlet pipe is connected to said liquid supply system, and the other end is detachably connected to a pipe cap.
9. The evaporative condenser as recited in claim 1, wherein the water outlet of the first nozzle and/or the water outlet of the second nozzle is directed toward the upper portion of the heat exchange plate.
10. A heat exchange system comprising an evaporative condenser according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921813934.1U CN210951988U (en) | 2019-10-25 | 2019-10-25 | Evaporative condenser and heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921813934.1U CN210951988U (en) | 2019-10-25 | 2019-10-25 | Evaporative condenser and heat exchange system |
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| Publication Number | Publication Date |
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| CN210951988U true CN210951988U (en) | 2020-07-07 |
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| CN201921813934.1U Active CN210951988U (en) | 2019-10-25 | 2019-10-25 | Evaporative condenser and heat exchange system |
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| CN (1) | CN210951988U (en) |
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