Distributor

Abstract

The utility model 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 conditioners, in particular, to a distributor. BACKGROUND

[0002] In an air conditioner pipeline system, a distributor is often arranged at the front end of a condenser and an evaporator. In actual operation, the gas-liquid mixture is often uneven, and the refrigerant flow into each branch is also uneven, which affects the working performance of the entire refrigeration system.

[0003] In the related art, the mixing uniformity of gas-liquid two-phase refrigerant is improved by arranging a flow guide component. The flow guide component is usually in the form of a blade structure to achieve a disturbance effect and improve the mixing uniformity of gas-liquid two-phase refrigerant. However, the blade structure has a gap, which not only easily causes noise, but also is easily blocked by small filamentous impurities in the system, thereby affecting the uniformity and flow efficiency of refrigerant distribution. CONTENT OF THE UTILITY MODEL

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

[0005] To solve the above problems, the present application provides a distributor, which comprises a shell and a flow guide device, the flow guide 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 guide device is located in 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 flow guide groove comprises a root and an opening part, the root is connected to the plate main body, the opening part has the opening, and the cross-sectional area of the flow guide groove increases from the root to the opening part.

[0006] Further, the flow guide width of the flow guide groove is equally wide or gradually increases from the root to the vicinity of the opening part; and the height of the inner wall of the flow guide groove from the plate main body gradually increases from the root to the vicinity of the opening part.

[0007] The projection of the flow guide groove on the plate main body further comprises 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 in the form of a "v" or a "u".

[0008] The flow guide device further comprises a flow rectification wall, the flow rectification wall is located on the side of the flow distribution plate, the flow guide groove is located on one side of the plate main body, and the opening direction is arranged in parallel along the tangential direction of the flow rectification wall.

[0009] Preferably, the flow guide groove and the opening are provided with multiple groups, and the flow guide grooves are distributed in a central symmetry around the axis of the flow rectification wall.

[0010] The flow guide groove is integrally formed by sheet metal stamping of the plate body, the groove surface of the flow guide groove faces the inlet section, and the opening falls into the rectifying wall in radial projection.

[0011] The shell further comprises a transition section, the shell sequentially flows through the inlet section, the transition section, the mixing section and the outlet section, the flow guide device is accommodated in the mixing section, and the transition section gradually increases the cavity sectional area in the direction close to the flow guide device.

[0012] The beneficial effects of the utility model are that the outer side of the flow guide groove is longer than the inner side, the left and right sides of the flow guide center are asymmetric structures, centrifugal flow outward is formed when the refrigeration mixture flows in the flow guide groove under the action of centrifugal force, compared with the flow guide groove shape along the opening center line left and right symmetry, the outer side of the flow guide groove structure of the application is longer, the groove surface drainage area formed under the same opening structure is relatively larger, the flow collection sectional area and the drainage space can be further increased, the liquid receiving area ratio of the flow guide groove on the flow dividing plate is increased, more refrigerant can flow into the opening part quickly, and the distribution uniformity and liquid flow efficiency of the refrigeration mixture are improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The distributor shaft side structure schematic diagram shown in an embodiment of the application is shown;

[0014] Figure 2 The distributor cross section structure schematic diagram shown in an embodiment of the application is shown;

[0015] Figure 3 The distributor inlet direction overhead schematic diagram shown in an embodiment of the application is shown;

[0016] Figure 4 The distributor inlet section structure schematic diagram shown in an embodiment of the application is shown;

[0017] Figure 5 The distributor outlet section structure schematic diagram shown in an embodiment of the application is shown;

[0018] Figure 6 The distributor outlet direction overhead schematic diagram shown in an embodiment of the application is shown;

[0019] Figure 7 The flow dividing plate structure schematic diagram shown in an embodiment of the application is shown;

[0020] Figure 8 The flow dividing plate structure overhead schematic diagram shown in an embodiment of the application is shown;

[0021] Figure 9 The flow guide groove opening cross section A-A schematic diagram shown in an embodiment of the application is shown;

[0022] Figure 10A schematic view of a flow distribution plate structure according to another embodiment of the present application;

[0023] Figure 11 A schematic view of a flow distribution plate structure according to another embodiment of the present application;

[0024] Figure 12 A schematic view of an opening cross section B-B of a flow guide groove according to another embodiment of the present application.

[0025] Reference signs

[0026] 1 - housing, 2 - flow guide device, 3 - inlet section, 4 - transition section, 5 - mixing section, 6 - outlet section;

[0027] 21 - flow distribution plate, 22 - rectifier wall, 23 - plate body, 24 - flow guide groove, 25 - opening;

[0028] 241 - opening portion, 242 - root portion, 243 - outer side edge, 244 - inner side edge, 245 - cross section edge;

[0029] 61 - distribution pipe. DETAILED DESCRIPTION

[0030] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, unless otherwise indicated, like numbers in the attached drawings refer to the same or similar elements. The following detailed description includes specific details for the purpose of providing a thorough understanding of the exemplary embodiments. However, it will be apparent to those skilled in the art that the exemplary embodiments can be practiced without these specific details. In some instances, well-known structures and components are not described in detail in order to avoid obscuring the understanding of the present description.

[0031] It should be understood that the use of "first", "second", and / or like designations in the present description and claims is not intended to limit the number or order of the constituent parts. Rather, these designations are used as non-limiting designations for the purpose of distinguishing between two or more constituent parts. Similarly, the use of "one" or "a" or "an" or "the" or "at least one" or "one or more" are not intended to limit the number or amount of the referenced elements, but rather to cover either one or more than one. The terms "plurality" or "a plurality" as used herein mean two or more than two. The terms "upper" and "lower" or "right" and "left" or "front" and "back" or "top" and "bottom" or the like as used herein are defined with respect to the orientation of the figure as shown and are relative terms, and thus can change depending on the position or the state of use. Therefore, these or other orientation terms should not be interpreted as limiting terms. The terms "include" or "comprise" or "comprising" or "include" or "comprise" or "comprising" or the like as used herein specify the presence of stated elements or integers or the like but do not preclude the presence or addition of one or more other elements or integers.

[0032] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, unless otherwise indicated, like numbers in the attached drawings refer to the same or similar elements. The following detailed description includes specific details for the purpose of providing a thorough understanding of the exemplary embodiments. However, it will be apparent to those skilled in the art that the exemplary embodiments can be practiced without these specific details. In some instances, well-known structures and components are not described in detail in order to avoid obscuring the understanding of the present description. Figures 1-12Some embodiments of the flow guide device and the distributor will be described in detail. The features in the embodiments and implementation described below can be supplemented or combined with each other without conflict.

[0033] 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 comprises at least 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 flow distribution plate 21, the flow distribution 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 the inlet section 3 and the mixing section 5 of the distributor.

[0034] Preferably, the projection of the flow guide groove 24 on the plate body 23 comprises an outer side 243 and an inner side 244, the outer side 243 is located on the outer side of the inner side 244 along the radial direction of the flow distribution plate 21, and the outer side 243 is relatively longer than the inner side 244.

[0035] It can be understood that the outer side 243 of the flow guide groove 24 is longer than the inner side 244, which can make the refrigerant mixture form a centrifugal flow that diverges outward when flowing in the direction close to the opening 25. Compared with the slot shape symmetrical to the left and right along the center line of the opening, the flow guide groove 24 of the present application has a longer structure flow, the slot surface formed under the same opening structure has a relatively larger flow guiding area, which can further increase the flow collection cross-sectional area and the flow guiding space, increase the liquid receiving area ratio of the flow guide groove 24 on the flow distribution plate 21, and make more refrigerant mixture flow out in the predetermined opening 25 direction quickly, so as to improve the liquid distribution efficiency of the refrigerant mixture.

[0036] Preferably, the flow guide groove 24 comprises an opening part 241 and a root part 242, the root part 242 is connected to the plate body 23, the opening part 241 is connected to the opening 25, and the cross-sectional area of the flow guide groove 24 increases from the root part 242 to the opening part 241.

[0037] In an embodiment, the flow guide groove 24 comprises an opening part 241 and a root part 242, wherein the opening part 241 falls within the flow guide groove 24 along the symmetry point of the center line of the opening 25, and the root part 242 is located behind the opening part 241 in the direction close to the opening 25. The refrigerant mixture generally flows into the front side of the flow distribution plate 21, and then flows out to the back side along the opening 25 after being rectified and changed direction by the flow guide groove 24. Among them, the flow guide direction of the flow guide groove 24 can be roughly guided out along the opening 25 after refraction through the opening part 241, and the root part 242 is located behind the opening part 241 relative to the direction of the opening 25, which can correspondingly increase the storage capacity and the turning flow of the flow guide groove 24 without changing the distribution direction of the refrigerant mixture, so as to ensure the distribution degree and uniformity, and improve the overall efficiency of the flow distribution system.

[0038] Preferably, the flow guide width of the flow guide groove 24 is set to be equal or gradually increased from the root 242 towards the opening 241; and / or, the height of the inner wall of the flow guide groove 24 from the plate body 23 is gradually increased from the root 242 towards the opening 241. By changing the trend of the flow guide groove 24, the trend of the refrigerant mixture is accelerated, and the liquid inlet efficiency is improved.

[0039] It can be understood that the flow guide width of the flow guide groove 24 is set to be equal or gradually increased along the direction close to the opening 25; and / or, the height of the inner wall of the flow guide groove 24 from the plate body 23 is gradually increased along the direction close to the opening 25.

[0040] In some embodiments, the flow guide groove 24 is a conical flow channel, the opening 25 is located at the bottom of the cone, the flow direction in the flow guide groove 24 is from the top of the cone to the bottom of the cone, the flow guide width of the inner wall along the direction close to the opening 25 is gradually increased, and the sinking height from the plate body 23 is also gradually increased. Specifically, the general structure of the flow guide groove 24 can be a semi-circular cone or a triangular pyramid, and the center line from the top of the cone to the bottom can be a straight line perpendicular to the bottom or a gradually changing curve.

[0041] In another embodiment, the flow guide groove 24 can also be a ring-shaped flow channel, and the opening 25 is located at the end of the ring-shaped flow channel. It can be understood that the flow guide width of the flow guide groove 24 is set to be equal, the flow direction extends along the tangential direction of the plate body 23, and the opening 25 is located at the extension end of the flow guide groove 24. Preferably, the height of the inner wall of the flow guide groove 24 from the plate body 23 is gradually increased along the direction close to the opening 25, which can be continuously and gradually extended from the end of the flow guide groove 24 to the opening 25, or can be first sunk and then horizontally extended at the end of the flow guide groove 24.

[0042] It can also be understood that the flow guide groove 24 at least includes an outer side 243 and an inner side 244 intersecting the plane where the plate body 23 is located, the outer side 243 is located radially outside the inner side 244 with respect to the flow distribution plate 21, and the length of the outer side 243 is relatively longer than that of the inner side 244. Specifically, the outer side 243 and the inner side 244 intersect at one end away from the opening 25, and the inner wall of the flow guide groove 24 has a conical flow channel; or, the outer side 243 and the inner side 244 are parallel to each other, and the inner wall of the flow guide groove 24 has a ring-shaped flow channel.

[0043] Specifically, the outer side 243 and / or the inner side 244 is an arc line, the arc of the outer side 243 faces the axis of the flow distribution plate 21, and the extension direction of the outer side 243 at the opening 25 is set along the tangential direction of the flow distribution plate 21.

[0044] In an embodiment, the outer side 243 can be an arc line with the arc opening towards the center of the rectifying wall 22, and the inner side 244 can be an arc line with the arc length relatively shorter than that of the outer side 243. Preferably, the extension direction of the outer side 243 near one end of the opening 25 is arranged along the tangential direction of the rectifying wall 22, and the inner side 244 is relatively located on the side of the outer side 243 near the center of the plate body 23. Specifically, the inner side 244 can also be an arc line with the arc opening towards the center of the rectifying wall 22.

[0045] It is easily conceivable that the outer side 243 and the inner side 244 can both 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.

[0046] In addition, the projection of the flow guide groove 24 on the plate body 23 further includes a cross-sectional side 245, the cross-sectional side 245 is connected to the outer side 243 and the inner side 244 at both ends, and the shape of the cross-sectional side 245 is approximately "v" shaped or "u" shaped.

[0047] In an embodiment, the flow guide groove 24 further includes a cross-sectional side 245 located on the side of the opening 25, the cross-sectional side 245 is combined with the plate body 23 to form the opening 25, and at least the outer side 243 and the inner side 244 to form the inner wall surface of the flow guide groove 24. The shape of the cross-sectional side 245 is approximately "v" shaped or "u" shaped with high sides and a low middle. It can be understood that the cross-sectional shape of the opening 25 of the flow guide groove 24 can be semicircular, semi-elliptical, inverted triangular, rectangular, inverted trapezoidal, etc.

[0048] Preferably, the plane where the cross-sectional side 245 is located (i.e. the plane of the opening 25) is perpendicular to the plane where the plate body 23 is located, and the cross-sectional side 245 is combined with the outer side 243 and the inner side 244 to form the inner wall surface of the flow guide groove 24.

[0049] It can be understood that the flow guide groove 24 is approximately "horn" shaped, along the direction close to the opening 25, the flow guide cross-sectional area gradually increases, and the distance between the flow guide center line and the center of the flow distribution plate 21 gradually decreases, so that the refrigerant mixture changes the flow direction in the flow guide groove 24, accelerates to converge at the bottom, and is guided to the other side of the flow distribution plate 21 along the direction of the opening 25.

[0050] In addition, the present application also provides a flow guide device 2 used in a distributor, which includes a flow distribution plate 21 and a rectifying wall 22. Specifically, the rectifying wall 22 is arranged on the circumferential side of the flow distribution plate 21, the flow distribution plate 21 includes a plate body 23 and a flow guide groove 24, the flow guide groove 24 protrudes from one side of the plate body 23, the end of the flow guide groove 24 is provided with an opening 25, and the two sides of the flow distribution plate 21 are connected to each other through the opening 25.

[0051] Preferably, the rectification wall 22 is located on the side of the distribution plate 21, and the guide groove 24 is located on one side of the plate body 23, and the opening 25 is arranged in parallel along the tangential direction of the rectification wall 22.

[0052] In an embodiment, the rectification wall 22 is arranged around the side of the distribution plate 21 and extends in the axial direction from the edge of the distribution plate 21. Specifically, the guide groove 24 is located on one side of the plate body 23 close to the rectification wall 22, and the opening 25 at the end of the guide groove 24 is arranged opposite to the rectification wall 22, and the opening direction is arranged in parallel along the tangential direction of the rectification wall 22. In some applications, the refrigerant mixture can be diverted through the guide groove 24 to flow out along the opening 25, and then re-distributed from the outlet section 6 after mixing through the rectification wall 22.

[0053] In another embodiment, the opening 25 is arranged in the radial direction of the distribution plate 21. It can be understood that the guide groove 24 is located on one side of the plate body 23 close to the rectification wall 22, and the guide groove 24 is outwardly protruding from 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 in parallel along the tangential direction of the rectification wall 22.

[0054] Preferably, the guide groove 24 and the opening 25 on the distribution plate 21 are arranged in multiple groups, and the guide grooves 24 are arranged in central symmetry around the axis of the rectification wall 22.

[0055] Specifically, the guide groove 24 is integrally formed by stamping the plate body 23, and the groove surface of the guide groove 24 faces the inlet section 3, and the opening 25 is projected in the radial direction and falls into the rectification wall 25.

[0056] In an embodiment, the guide groove 24 can be a plurality of grooves uniformly distributed along the circumferential direction of the plate body 23, and the guide grooves 24 are arranged in central symmetry around the axis of the rectification wall 25. The rectification wall 22 extends in the vertical direction from the edge of the plate body 23 of the distribution plate 21, and the guide groove 24 is stretched from the middle region of the plate body 23 to one side of the rectification wall 22, and then a hole is cut to the opening 25 perpendicular to the plate body 23, and the radial projection falls into the rectification wall 22.

[0057] Preferably, the guide groove 24 can be formed by stamping the plate body 23, and the guide groove 24 is stamped downward from the upper surface of the plate body 23, and the side of the downward recess has an opening. The guide groove 24 formed by stamping the plate body 23 has a structure that reduces the slit structure and uses a circular arc transition, which can effectively reduce the flow noise. The cross section of the opening 25 is perpendicular to the plane of the plate body 23, which can make the refrigerant flowing through the opening 25 change direction tangentially, and then rotate at high speed after colliding with the rectification wall 22 in the circumferential direction.

[0058] The present application also provides a distributor, including a shell 1 and the above-mentioned flow-guiding 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 flow-guiding device 2 is accommodated in the mixing section 5. The cross-sectional area of ​​the cavity of the transition section 4 gradually increases as it approaches the flow-guiding device 2.

[0059] It is 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 portion will pass through the guide groove 24 into the opening 25 and flow into the mixing section 5, while the other portion will be reflected and temporarily retained in the transition section 4, and then re-rectified before entering the guide groove 24. Therefore, by providing the root portion 242 of the guide groove 24 on the diverter plate 21, the reflected portion of the retained refrigerant mixture can be quickly introduced into the opening 25, thereby improving the liquid flow efficiency of the diverter plate 21 and further improving the operating performance of the refrigeration system.

[0060] After flowing through diverter plate 21, the refrigerant mixture is guided by guide grooves 24, changing its direction from axial to tangential, and its velocity increases. It is then able to rotate at high speed within the mixing chamber between rectifying walls 22, with streamlines forming a regular spiral. The mixture then spirals through distribution pipe 61 and enters the evaporator. Diverter plate 21 simultaneously improves both the flow velocity and streamlines, thereby enhancing the efficiency and uniformity of the distribution of the refrigerant mixture to the outlet section.

[0061] In one embodiment, the transition section 4 of the housing 1 expands and extends from the end of the inlet section 3, with the terminal end connected to the mixing section 5, and the flow guide device 2 is accommodated within the mixing section 5. It is understood that as the refrigerant mixture flows through the transition section 4 and the mixing section 5, the cross-sectional area of ​​the pipe in front of the diverter plate 21 gradually increases. On the one hand, this can increase the storage volume at the front end of the flow guide device 2, buffer the inlet pressure on the front side of the flow guide device 2, and reduce the vibration and noise caused by liquid impact on the diverter plate 21. On the other hand, the flared slope of the transition section 4 can also converge the portion of the refrigerant mixture reflected back by the diverter plate 21, which flows back into the diverter groove 24, thereby quickly continuing to flow out through the opening 25, thereby improving distribution efficiency.

[0062] Specifically, multiple distribution pipes 61 are provided at the outlet section 6, and are symmetrically distributed around the axis of the flow guide device 2. Preferably, the distribution pipes 61 are located below the flow guide groove 24, with the pipe openings substantially located around the mixing chamber of the rectifying wall 22. During the diversion process, the refrigerant mixture rotates along the rectifying wall 22 while entering the outlet, and ultimately flows into the heat exchanger through the distribution pipes 61.

[0063] It can be understood that when the refrigerant mixture flows from the inlet section 3 into the distributor, it will hit the flow dividing plate 21, and most of the refrigerant mixture can enter the flow guide groove 24, change the flow direction and increase the flow speed through the flow guide groove 24. The refrigerant mixture flowing out from the opening 25 in the tangential direction will hit the straightening 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 higher density is gathered around the mixing chamber, and the gas phase refrigerant with lower density is gathered in the center of the mixing chamber, and then the liquid phase refrigerant is guided to the heat exchanger by the surrounding distribution pipe 61.

[0064] In yet another embodiment, the shell 1 of the distributor and the flow guide device 2 can be fixedly connected by riveting, tight fitting, welding and the like. Preferably, the material of the shell 1 can be selected from red copper, brass, aluminum alloy, and the material of the flow guide device 2 can be selected from stainless steel, red copper, carbon steel and aluminum alloy.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions described in the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the present application, and all technical solutions and improvements that do not deviate from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A dispenser, characterized in that: The invention comprises a shell and a flow guide device, wherein the flow guide device is located inside 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 flow guide groove comprises a root portion and an opening portion, wherein the root portion is connected to the plate body, and the opening portion has the opening, and the cross-section of the flow guide groove increases in area from the root portion toward the opening portion.

2. The dispenser according to claim 1, characterized in that The guide width of the guide groove is the same width or gradually increases from the root to the opening; the height of the inner wall of the guide groove from the plate body gradually increases from the root to the opening.

3. The dispenser according to claim 1 or 2, 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 "V"-shaped or "U"-shaped.

4. The dispenser according to claim 1, characterized in that The flow guide device further includes a flow straightening wall, which is located on the peripheral side of the diverter plate. The flow guide groove is located on one side of the plate body. The opening direction is arranged tangentially and parallel to the flow straightening wall.

5. The dispenser according to claim 4, 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 rectification wall.

6. The dispenser according to claim 5, characterized in that The guide groove is integrally formed by stamping the plate body through sheet metal, the groove surface of the guide groove faces the inlet section, and the opening is projected radially into the rectifying wall.

7. The dispenser according to claim 1, 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 cross-sectional area of ​​the cavity of the transition section gradually increases as it approaches the flow guide device.

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