Distributor

Abstract

The invention provides a distributor and relates to the field of refrigeration, the distributor comprises a shell and a flow guiding device, the flow guiding device is located in the shell, the distributor comprises an inlet section, a mixing section and an outlet section, the mixing section is located between the inlet section and the outlet section, and at least part of the flow guiding device is located on the mixing section; the flow guide device comprises a flow distribution plate, the flow distribution plate comprises a plate main body and a flow guide groove, the end part of the flow guide groove is provided with a laterally arranged opening, the opening is communicated with the inlet section and the mixing section, and the projection of the flow guide groove on the plate main body comprises an outer side edge and an inner side edge; the outer side edge is relatively located on the outer side of the inner side edge in the radial direction of the splitter plate, and the outer side edge is relatively longer than the inner side edge. According to the distributor, the distribution uniformity and the liquid flowing efficiency of the distributor can be improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning, and in particular, to a distributor. Background Art

[0002] In the air conditioning piping system, distributors are often installed in front of the condenser and evaporator. In actual operation, uneven gas-liquid mixing and uneven refrigerant flow entering each branch often occur, which in turn affects the working performance of the entire refrigeration system.

[0003] In the related art, a flow guide component is provided to improve the mixing uniformity of the gas-liquid refrigerant. The flow guide component mostly adopts a blade structure to achieve a disturbance effect and improve the mixing uniformity of the gas-liquid refrigerant. However, due to the slits in the blade structure, it is not only easy to cause noise, but also easy to be blocked by tiny filamentous impurities in the system, affecting the uniformity of refrigerant distribution and flow efficiency. Summary of the invention

[0004] The purpose of the present application is to provide a distributor which helps to improve the flow efficiency and distribution uniformity of the distributor.

[0005] In order to solve the above problems, the present application provides a distributor, including a shell and a guide device, the guide device is located in the shell, the distributor includes an inlet section, a mixing section and an outlet section, the mixing section is located between the inlet section and the outlet section, and at least part of the guide device is located in the mixing section; the guide device includes a diverter plate, the diverter plate includes a plate body and a guide groove, the end of the guide groove has a laterally arranged opening, the opening connects the inlet section and the mixing section, the projection of the guide groove on the plate body includes an outer edge and an inner edge, the outer edge is radially located relative to the outside of the inner edge along the diverter plate, and the outer edge is relatively longer than the inner edge.

[0006] In the present application, the outer side of the guide groove is set to be longer than the inner side, and the left and right sides along the guide center are asymmetrical structures. When the refrigerant mixture flows in the guide groove, it will form a centrifugal flow that diverges outward under the action of centrifugal force. Compared with the guide groove shape that is symmetrical on the left and right along the center line of the opening, the outer side of the guide groove structure of the present application is longer, and the groove surface drainage area formed under the same opening structure is relatively larger, which can further increase the collecting cross-sectional area and drainage space, increase the proportion of the liquid contact area of ​​the guide groove on the diverter plate, so that more refrigerant can quickly flow into the opening, thereby improving the distribution uniformity of the refrigerant mixture and the liquid flow efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the axial structure of a distributor according to an embodiment of the present application;

[0008] Figure 2This is a schematic diagram of a cross-sectional structure of a distributor according to an embodiment of the present application;

[0009] Figure 3 This is a schematic top view of the distributor inlet direction shown in one embodiment of the present application;

[0010] Figure 4 This is a schematic diagram of the structure of the distributor inlet section according to an embodiment of the present application;

[0011] Figure 5 This is a schematic diagram of the structure of the distributor outlet section according to an embodiment of the present application;

[0012] Figure 6 A schematic diagram of a top view of a distributor outlet direction shown in an embodiment of the present application;

[0013] Figure 7 This is a schematic diagram of the structure of a diverter plate according to an embodiment of the present application;

[0014] Figure 8 A schematic top view of a splitter plate structure shown in an embodiment of the present application;

[0015] Fig. 9 This is a schematic diagram of the guide groove opening section AA shown in an embodiment of the present application;

[0016] Fig.10 This is a schematic diagram of the structure of a splitter plate according to another embodiment of the present application;

[0017] Fig.11 A schematic top view of a splitter plate structure shown in yet another embodiment of the present application;

[0018] Fig.12 This is a schematic diagram of the guide groove opening section BB according to another embodiment of the present application.

[0019] Reference numerals

[0020] 1-shell, 2-flow guide device, 3-inlet section, 4-transition section, 5-mixing section, 6-outlet section;

[0021] 21-dividing plate, 22-rectifying wall, 23-plate body, 24-guiding groove, 25-opening;

[0022] 241 - opening, 242 - root, 243 - outer side, 244 - inner side, 245 - cross-sectional side;

[0023] 61-Distribution pipe. Specific embodiments

[0024] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0025] It should be understood that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one; "several" means two or more quantities, unless otherwise specified. The directional words such as upper, lower, left, right, front, back, inside, outside, top, bottom, etc. mentioned or may be mentioned in the text are defined relative to the structure shown in the corresponding drawings. They are relative concepts, so they may change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects.

[0026] The following is combined with Figure 1-12 Some embodiments of the flow guide device and the distributor are described in detail. In the absence of conflict, the features of the following embodiments and implementations can complement or be combined with each other.

[0027] The present application provides a distributor, comprising a housing 1 and a flow guide device 2, wherein the flow guide device 2 is located in the housing 1, the housing 1 at least comprises an inlet section 3, a mixing section 5 and an outlet section 6, the mixing section 5 is located between the inlet section 3 and the outlet section 6, and at least part of the flow guide device 2 is located in the mixing section 5. Specifically, the flow guide device 2 comprises a diverter plate 21, the diverter plate 21 comprises a plate body 23 and a flow guide groove 24, the end of the flow guide groove 24 has a laterally arranged opening 25, and the opening 25 communicates with the inlet section 3 and the mixing section 5 of the distributor.

[0028] Preferably, the projection of the guide groove 24 on the plate body 23 includes an outer edge 243 and an inner edge 244 , the outer edge 243 is located radially outside the inner edge 244 along the splitter plate 21 , and the outer edge 243 is relatively longer than the inner edge 244 .

[0029] It can be understood that the outer side 243 of the guide groove 24 is longer than the inner side 244, so that the refrigerant mixture can form a centrifugal flow diverging outward when flowing in the direction close to the opening 25. Compared with the groove shape that is symmetrical along the center line of the opening, the guide groove 24 of the present application has a longer structural flow, and the groove surface drainage area formed under the same opening structure is relatively larger, which can further increase the collecting cross-sectional area and drainage space, increase the proportion of the liquid contact area of ​​the guide groove 24 on the diverter plate 21, so that more refrigerant mixture can quickly flow out in the direction of the predetermined opening 25, thereby improving the liquid distribution efficiency of the refrigerant mixture.

[0030] Preferably, the guide groove 24 includes an opening portion 241 and a root portion 242 , the root portion 242 is connected to the plate body 23 , the opening portion 241 is connected to the opening 25 , and the cross-section of the guide groove 24 increases in area from the root portion 242 to the opening portion 241 .

[0031] In one embodiment, the guide groove 24 includes an opening 241 and a root 242, wherein the symmetrical point of the opening 241 along the center line of the opening 25 falls within the guide groove 24, and the root 242 is located behind the opening 241 along the direction close to the opening 25. The refrigerant mixture generally flows in along the front side facing the diverter plate 21, and flows out to the rear side along the opening 25 after being rectified and changed by the guide groove 24. The guide groove 24 can be guided roughly along the direction of the opening 25 after being refracted by the opening 241, and the root 242 is located behind the opening 25 relative to the direction of the opening 25. Under the premise of not changing the distribution direction of the refrigerant mixture, the storage capacity and steering process of the guide groove 24 can be increased accordingly, which can ensure the distribution degree and uniformity and improve the overall efficiency of the guide distribution system.

[0032] Preferably, the guide width of the guide groove 24 is set to be equal or gradually increase from the root 242 to the opening 241; and / or the height of the inner wall of the guide groove 24 from the plate body 23 gradually increases from the root 242 to the opening 241. By changing the trend of the flow path wall of the guide groove 24, the flow inflow trend of the refrigerant mixture is accelerated, and the liquid inlet efficiency is improved.

[0033] It can be understood that the guide width of the guide groove 24 along the direction close to the opening 25 is uniform or gradually increases; and / or the height of the inner wall of the guide groove 24 from the plate body 23 gradually increases along the direction close to the opening 25.

[0034] In some embodiments, the guide groove 24 is a conical flow channel, the opening 25 is located at the bottom of the cone, the flow direction in the guide groove 24 flows from the top of the cone to the bottom of the cone, the width of the inner wall surface close to the opening 25 gradually increases, and the sinking height from the plate body 23 also gradually increases. Specifically, the general structure of the guide groove 24 can be a semi-conical or triangular pyramid shape, and the center line from the top of the cone to the bottom surface can be a straight line extending perpendicular to the bottom surface, or a gradually extending curve.

[0035] In another embodiment, the guide groove 24 may also be an annular flow channel, and the opening 25 is located at the end of the annular flow channel. It can be understood that the guide width of the guide groove 24 is set to be equal width, the guide direction extends tangentially and parallel to the plate body 23, and the opening 25 is relatively located at the extended end of the guide groove 24. Preferably, the height of the inner wall surface of the guide groove 24 from the plate body 23 gradually increases in the direction close to the opening 25, and can be continuously and gradually extended from the end of the guide groove 24 to the opening 25, or it can be first sunken at the end of the guide groove 24 and then extended horizontally.

[0036] It can also be understood that the guide groove 24 at least includes an outer side edge 243 and an inner side edge 244 intersecting with the plane where the plate body 23 is located, and the outer side edge 243 is relatively located outside the inner side edge 244 along the radial direction of the diverter plate 21, and the length of the outer side edge 243 is relatively longer than the inner side edge 244. Specifically, the outer side edge 243 and the inner side edge 244 are arranged to intersect at one end away from the opening 25, and the inner wall surface geometry of the guide groove 24 is a conical flow channel; or, the outer side edge 243 and the inner side edge 244 are arranged parallel to each other, and the inner wall surface geometry of the guide groove 24 is an annular flow channel.

[0037] Specifically, the outer side edge 243 and / or the inner side edge 244 is an arc line, the arc opening of the outer side edge 243 is arranged toward the axis of the diverter plate 21 , and the extension direction of the outer side edge 243 at the opening 25 is arranged tangentially to the diverter plate 21 .

[0038] In one embodiment, the outer side edge 243 may be an arc line with an arc opening toward the axis of the rectifying wall 22, and the inner side edge 244 may be an arc line with an arc length relatively shorter than that of the outer side edge 243. Preferably, the extension direction of the end of the outer side edge 243 close to the opening 25 is arranged along the tangent direction of the rectifying wall 22, and the inner side edge 244 is relatively located on the side of the outer side edge 243 close to the axis of the plate body 23. Specifically, the inner side edge 244 may also be an arc line with an arc opening toward the axis of the rectifying wall 22.

[0039] It is easy to imagine that the outer side 243 and the inner side 244 can also be straight line segments; or the outer side 243 can be a curved line segment and the inner side 244 can be a straight line segment, as long as the length of the outer side 243 is relatively longer than that of the inner side 244.

[0040] In addition, the projection of the guide groove 24 on the plate body 23 also includes a cross-sectional edge 245 , the two ends of the cross-sectional edge 245 are connected to the outer side edge 243 and the inner side edge 244 , and the shape of the cross-sectional edge 245 is roughly “v”-shaped or “u”-shaped.

[0041] In one embodiment, the guide groove 24 further includes a cross-sectional edge 245 located on the side of the opening 25, and the cross-sectional edge 245 and the plate body 23 are combined to form the opening 25, and at least the cross-sectional edge 245 and the inner side edge 244 are combined to form the inner wall surface of the guide groove 24. The shape of the cross-sectional edge 245 is generally a "v"-shaped or "u"-shaped structure with high sides and low middle. It can be understood that the cross-sectional shape of the opening 25 of the guide groove 24 can be semicircular, semi-elliptical, inverted triangle, rectangle, inverted trapezoid, etc.

[0042] Preferably, the plane where the cross-sectional edge 245 is located (ie, the plane of the opening 25 ) is perpendicular to the plane where the plate body 23 is located, and the cross-sectional edge 245 , the outer side edge 243 , and the inner side edge 244 together form the inner wall surface of the guide groove 24 .

[0043] It can be understood that the guide groove 24 is roughly in the shape of a "bull horn". The guide cross-sectional area gradually increases along the direction close to the opening 25, and the distance between the guide center line and the axis of the diverter plate 21 gradually decreases. The refrigerant mixture changes its flow direction along the guide groove 24, accelerates to converge toward the bottom, and is discharged to the other side of the diverter plate 21 along the direction of the opening 25.

[0044] In addition, the present application also provides a guide device 2 used on a distributor, which includes a diverter plate 21 and a straightening wall 22. Specifically, the straightening wall 22 is arranged on the peripheral side of the diverter plate 21, and the diverter plate 21 includes a plate body 23 and a guide groove 24. The guide groove 24 protrudes to one side of the plate body 23, and an opening 25 is arranged at the end of the guide groove 24. The two sides of the diverter plate 21 can be connected to each other through the opening 25.

[0045] Preferably, the rectifying wall 22 is located on the peripheral side of the diverter plate 21 , the guide groove 24 is located on one side of the plate body 23 , and the opening 25 is arranged tangentially and parallel to the rectifying wall 22 .

[0046] In one embodiment, the rectifying wall 22 is disposed around the circumference of the diverter plate 21 and extends axially from the edge of the diverter plate 21. Specifically, the guide groove 24 is located on the side of the plate body 23 close to the rectifying wall 22, and the opening 25 at the end of the guide groove 24 is disposed opposite to the rectifying wall 22, and the opening direction is disposed tangentially and parallel to the rectifying wall 22. In some application processes, the refrigerant mixture can be turned through the guide groove 24 to flow out in the direction of the opening 25, and then redistributed from the outlet section 6 after being mixed by the rectifying wall 22.

[0047] In another embodiment, the opening 25 cross-section extends along the radial direction of the diverter plate 21. It can be understood that the guide groove 24 is located on the side of the plate body 23 close to the rectifying wall 22, and the whole is protruding outward relative to the plate body 23 to form a guide extension curved surface, and the opening 25 at the end of the guide groove 24 is arranged parallel to the tangent direction of the rectifying wall 22.

[0048] Preferably, a plurality of guide grooves 24 and openings 25 are provided on the splitter plate 21 , and the guide grooves 24 are centrally symmetrically distributed around the axis of the rectifying wall 22 .

[0049] Specifically, the guide groove 24 is integrally formed by stamping the plate body 23 with sheet metal, the groove surface of the guide groove 24 faces the inlet section 3 , and the opening 25 is projected into the rectifying wall 25 along the radial direction.

[0050] In one embodiment, the guide grooves 24 may be a plurality of grooves evenly distributed along the circumference of the plate body 23, and the guide grooves 24 are centrally symmetrically distributed around the axis of the rectifying wall 25. The rectifying wall 22 extends from the edge of the plate body 23 of the diverter plate 21 in a vertical direction, and the guide grooves 24 are punched and stretched from the middle area of ​​the plate body 23 toward one side of the rectifying wall 22, and then cut toward one side to obtain an opening 25 perpendicular to the plate body 23, and the radial projection falls within the rectifying wall 22.

[0051] Preferably, the guide groove 24 can be formed by sheet metal stamping, stamped downward on the upper surface of the plate body 23, and the concave side has an opening guide structure. The guide groove 24 formed by sheet metal stamping reduces the slit structure in structure, and adopts arc transition, which can effectively reduce flow noise. The cross section of the opening 25 is perpendicular to the plane of the plate body 23, so that the refrigerant mixture flowing through the opening 25 can achieve tangential transformation, and then collide with the rectifying wall 22 in the circumferential direction to generate a high-speed rotating flow.

[0052] The present application also provides a distributor, including a shell 1 and the above-mentioned guide device 2, the shell 1 also includes a transition section 4, the shell 1 flows through the inlet section 3, the transition section 4, the mixing section 5 and the outlet section 6 in sequence, the guide device 2 is accommodated in the mixing section 5, and the transition section 4 gradually increases its cavity cross-sectional area along the direction close to the guide device 2.

[0053] It can be understood that when the refrigerant mixture flows from the inlet section 3 into the distributor guide device 2, before passing through the diverter plate 21, a part of it will enter the opening 25 through the guide groove 24 and flow into the mixing section 5, and the other part will be reflected and temporarily retained in the transition section 4, and then enter the guide groove 24 after being re-rectified. Therefore, by providing the root 242 of the guide groove 24 on the diverter plate 21, the reflected part of the retained refrigerant mixture can be quickly introduced into the opening 25, thereby improving the liquid passing efficiency of the diverter plate 21 and thus improving the working performance of the refrigeration system.

[0054] After flowing through the diverter plate 21, the flow direction of the refrigerant mixture changes from axial to tangential through the guidance of the guide groove 24, and the flow velocity increases, so that the mixture can rotate at high speed in the mixing chamber in the middle of the rectifying wall 22, and the streamline is in a regular spiral shape, and flows through the distribution pipe 61 in a spiral forward manner and enters the evaporator. The flow velocity and streamline are improved synchronously by the diverter plate 21, thereby improving the distribution efficiency and distribution uniformity of the refrigerant mixture flowing into the outlet section.

[0055] In one embodiment, the transition section 4 of the shell 1 expands and extends from the end of the inlet section 3, and the end is connected to the mixing section 5, and the flow guide device 2 is accommodated in the mixing section 5. It can be understood that when the refrigerant mixture flows through the transition section 4 and the mixing section 5, the cross-sectional area of ​​the pipeline in the front section of the diverter plate 21 gradually increases. On the one hand, the storage volume at the front end of the diverter device 2 can be increased, the inlet pressure on the front side of the diverter device 2 can be buffered, and the vibration and noise generated by the liquid impact of the diverter plate 21 can be reduced; on the other hand, the expanded inclined surface of the transition section 4 can also converge part of the refrigerant mixture refracted back by the diverter plate 21, and flow to the diverter groove 24 again, so as to continue to flow out quickly from the opening 25, which can take into account the improvement of the distribution efficiency.

[0056] Specifically, a plurality of distribution pipes 61 are provided at the outlet section 6, and the distribution pipes 61 are symmetrically distributed around the axis center of the flow guide device 2. Preferably, the distribution pipe 61 is located below the flow guide groove 24, and the pipe opening is basically located around the mixing chamber of the rectifying wall 22. During the flow guide process, the refrigerant mixture enters the outlet while rotating along the rectifying wall 22, and finally flows into the heat exchanger through the distribution pipe 61.

[0057] It can be understood that when the refrigerant mixture flows into the distributor from the inlet section 3, it will hit the diverter plate 21, and most of the refrigerant mixture can enter the guide groove 24, change the flow direction and increase the flow speed through the guide groove 24. The refrigerant mixture flowing out from the opening 25 along the tangential direction will hit the rectifying wall 22 at a certain angle, forming a high-speed rotating flow in the mixing chamber. Due to the action of centrifugal force, the liquid phase refrigerant with a larger density gathers around the mixing chamber, and the gas phase refrigerant with a smaller density gathers in the center of the mixing chamber, and then the liquid phase refrigerant is guided to the heat exchanger by the surrounding distribution pipes 61.

[0058] In another embodiment, the housing 1 of the distributor and the flow guide device 2 can be fixedly connected by riveting, tight fitting, welding, etc. Preferably, the material of the housing 1 can be copper, brass, or aluminum alloy, and the material of the flow guide device 2 can be stainless steel, copper, carbon steel, or aluminum alloy.

[0059] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A dispenser, It is characterized in that It comprises a shell and a flow guide device, wherein the flow guide device is located in the shell, and the distributor comprises an inlet section, a mixing section and an outlet section, wherein the mixing section is located between the inlet section and the outlet section, and at least part of the flow guide device is located in the mixing section; the flow guide device comprises a diverter plate, wherein the diverter plate comprises a plate body and a flow guide groove, wherein the end of the flow guide groove has a laterally arranged opening, wherein the opening connects the inlet section and the mixing section, and wherein the projection of the flow guide groove on the plate body comprises an outer side edge and an inner side edge, wherein the outer side edge is radially located relative to the outer side of the inner side edge along the diverter plate, and the outer side edge is relatively longer than the inner side edge.

2. The dispenser according to claim 1, It is characterized in that Along the extension direction of the guide groove, the guide groove includes a root portion and an opening portion, the root portion is connected to the plate body, the opening portion has the opening, and the cross section of the guide groove increases in area from the root portion to the opening portion.

3. The dispenser according to claim 2, It is characterized in that The guide width of the guide groove is the same width or gradually increases from the root to the opening; and / or the height of the inner wall of the guide groove from the plate body gradually increases from the root to the opening.

4. The dispenser according to any one of claims 1 to 3, It is characterized in that The outer side and the inner side are arranged to intersect each other away from the opening end, and the inner wall surface geometry of the guide groove is a conical flow channel; or, the outer side and the inner side are arranged parallel to each other, and the inner wall surface geometry of the guide groove is an annular flow channel.

5. The dispenser according to any one of claims 1 to 4, It is characterized in that The outer side edge and / or the inner side edge is an arc line, the arc opening of the outer side edge is arranged toward the axis of the diverter plate, and the extension direction of the outer side edge at the opening is arranged tangentially to the diverter plate.

6. The dispenser according to any one of claims 1 to 5, It is characterized in that The projection of the guide groove on the plate body also includes a cross-sectional edge, the two ends of the cross-sectional edge are connected to the outer side edge and the inner side edge, and the shape of the cross-sectional edge is roughly "V"-shaped or "U"-shaped.

7. The dispenser according to any one of claims 1 to 6, It is characterized in that The flow guide device further comprises a flow straightening wall, the flow straightening wall is located on the peripheral side of the diverter plate, the flow guide groove is located on one side of the plate body, and the opening direction is arranged tangentially and parallelly to the flow straightening wall.

8. The dispenser according to claim 7, It is characterized in that The guide grooves and the openings are provided in multiple groups, and the guide grooves are centrally symmetrically distributed around the axis of the rectifying wall.

9. The dispenser according to claim 8, It is characterized in that The guide groove is integrally formed by stamping the plate body sheet metal, the groove surface of the guide groove faces the inlet section, and the opening is projected radially into the rectifying wall.

10. The dispenser according to any one of claims 1 to 9, It is characterized in that The shell also includes a transition section. The shell flows through an inlet section, a transition section, a mixing section and an outlet section in sequence. The flow guide device is accommodated in the mixing section. The cavity cross-sectional area of ​​the transition section gradually increases along the direction close to the flow guide device.

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