Fluid dispensing device and compressor

Abstract

The application provides a fluid distribution device and a compressor. An outer cavity has a first containing cavity, and an opening in communication with the first containing cavity is arranged at the top of the outer cavity. A plurality of shunt holes in communication with the first containing cavity are arranged at the side or bottom of the outer cavity. A distribution cavity is rotatably arranged in the first containing cavity and is provided with a distribution opening. A shunt cavity is formed between the outer wall of the distribution cavity and the inner wall of the outer cavity. The distribution cavity is driven to rotate by the fluid entering from the opening, so that the distribution opening is sequentially communicated with the shunt cavity and the shunt hole. The distribution opening of the distribution cavity is sequentially communicated with the shunt hole of the outer cavity when the distribution cavity is driven to rotate by the fluid, and the fluid is intermittently and uniformly distributed to the branch pipes after entering the branch pipes. In addition, the shunt cavity is formed between the outer wall of the distribution cavity and the inner wall of the outer cavity to temporarily store a certain amount of fluid, and then the fluid is uniformly flowed into each shunt hole, thereby improving the pressure fluctuation phenomenon of the fluid in the branch pipe.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and more particularly to a fluid distribution device and a compressor. Background Technology

[0002] In refrigeration, heat pump, and air conditioning systems, using two or more compressors operating in parallel is a common solution to meet larger capacity requirements. While this design can improve the overall system performance, it also introduces new technical challenges, most notably the problem of uniform fluid distribution among parallel units and the severe pressure fluctuations and poor stability of the fluid in the branch pipes.

[0003] Therefore, it is necessary to design a fluid distribution device and compressor to solve the above-mentioned technical problems. Utility Model Content

[0004] This application provides a fluid distribution device and a compressor that can achieve uniform fluid distribution.

[0005] According to a first aspect of the embodiments of this specification, a fluid dispensing device is provided, comprising:

[0006] An outer cavity having a first receiving cavity, the top of the outer cavity having an opening communicating with the first receiving cavity, and the side or bottom of the outer cavity having multiple diversion holes communicating with the first receiving cavity; and

[0007] A dispensing cavity is rotatably placed within the first receiving cavity and is provided with a dispensing port; a flow-diverting cavity is formed between the outer wall of the dispensing cavity and the inner wall of the outer cavity.

[0008] The distribution cavity rotates under the drive of fluid entering from the opening, so that the distribution port is connected to the diversion cavity and the diversion hole in sequence.

[0009] Furthermore, it also includes an impeller, which is fixed to the top of the dispensing cavity; the impeller has a helical structure.

[0010] Furthermore, it also includes an inner cavity, which is fixed within the first receiving cavity; the inner cavity has a second receiving cavity and is provided with multiple diversion channels, which are arranged one-to-one with the diversion holes; the distribution cavity is rotatably placed within the second receiving cavity.

[0011] Furthermore, the inner cavity includes a cavity body, end plates, and partitions; the end plates are fixed at both ends of the cavity body; the partitions are spaced apart between the end plates; a plurality of flow-diverting cavities are formed between the end plates, the partitions, the outer wall of the cavity body, and the inner wall of the outer cavity, and the flow-diverting cavities are arranged in a one-to-one correspondence with the flow-diverting holes.

[0012] Furthermore, the axial length of the diversion cavity is greater than the axial length of the diversion channel and the diversion orifice.

[0013] Furthermore, it also includes a first bearing, and the end plate is provided with an annular groove communicating with the second receiving cavity; the first bearing is placed in the annular groove and rotates with the dispensing cavity.

[0014] Furthermore, the first receiving cavity includes an upper cavity and a lower cavity, a second bearing is provided at the connection between the upper cavity and the lower cavity, and the dispensing cavity is rotatably engaged with the second bearing and placed in the lower cavity;

[0015] The radial dimension of the lower cavity is greater than that of the upper cavity.

[0016] Furthermore, the diversion cavity is formed between the bottom wall of the distribution cavity and the bottom wall of the lower cavity.

[0017] Furthermore, the bottom wall of the lower cavity is arc-shaped, the outline of the diversion hole near the edge of the bottom wall of the lower cavity is concentric with the lower cavity, and the opening of the diversion hole gradually decreases from the edge of the bottom wall of the lower cavity towards the center of the bottom wall of the lower cavity.

[0018] According to a second aspect of the embodiments of this specification, a compressor is provided, including a compressor unit, a main pipe, branch pipes, and the fluid distribution device described in the first aspect, wherein the compressor unit is connected to the first receiving cavity through the main pipe, and the number of branch pipes is plurality of and each is connected to the flow distribution hole.

[0019] This application has the following beneficial effects: When the distribution cavity rotates under the action of fluid, its distribution port connects sequentially with the diversion holes on the outer cavity, intermittently and evenly distributing the fluid to each diversion hole before it enters the branch pipe. Furthermore, a diversion cavity is formed between the outer wall of the distribution cavity and the inner wall of the outer cavity to temporarily store a certain amount of fluid before it flows evenly to each diversion hole, thus improving the pressure fluctuation phenomenon of the fluid in the branch pipe.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0022] Figure 1 This is a schematic diagram of the structure of a fluid distribution device in one embodiment of this application;

[0023] Figure 2 yes Figure 1 Schematic diagram of the inner cavity structure;

[0024] Figure 3 yes Figure 1 Schematic diagram of the distribution cavity and impeller;

[0025] Figure 4 yes Figure 1 A sectional view;

[0026] Figure 5 A schematic diagram of the fluid distribution device in another embodiment of this application;

[0027] Figure 6 yes Figure 5 Schematic diagram of the distribution cavity and impeller;

[0028] Figure 7 yes Figure 5 A sectional view.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10-Outer cavity; 11-First receiving cavity; 111-Upper cavity; 112-Lower cavity; 12-Opening; 13-Diverter hole;

[0031] 20 - Distribution cavity; 21 - Distribution port; 22 - Diversion cavity;

[0032] 30 - Impeller;

[0033] 40-Inner cavity; 41-Second receiving cavity; 42-Diverting channel; 43-Cavity body; 44-End plate; 441-Annular groove; 45-Baffle plate;

[0034] 50 - First bearing;

[0035] 60 - Second bearing;

[0036] 70-Branch pipe. Detailed Implementation

[0037] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0038] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0039] The embodiments described in this specification will now be described in detail.

[0040] Reference Figure 3 and Figure 4 As shown, this application discloses a fluid distribution device, which includes an outer cavity 10, a distribution cavity 20, and an impeller 30, with the impeller 30 fixed on the distribution cavity 20. The outer cavity 10 has multiple flow-diverting holes 13, and the distribution cavity 20 has a distribution port 21. Under the action of fluid, the impeller 30 drives the distribution cavity 20 to rotate, causing its distribution port 21 to sequentially connect with the flow-diverting holes 13 on the outer cavity 10, thus intermittently and uniformly distributing the fluid into each flow-diverting hole 13.

[0041] Figures 1 to 4 A fluid distribution device is shown. The outer cavity 10 is cylindrical and has a first receiving cavity 11. The top of the outer cavity 10 has an opening 12 communicating with the first receiving cavity 11. Diverting holes 13 are disposed on the side of the outer cavity 10 and communicate with the first receiving cavity 11. The diverting holes 13 are multiple and identical in shape, and are arranged at equal intervals along the radial direction.

[0042] The dispensing cavity 20 is also cylindrical and is rotatably placed inside the first receiving cavity 11. The dispensing port 21 is provided on the side wall of the dispensing cavity 20, so that when the dispensing cavity 20 rotates, the dispensing port 21 can flow through the diversion hole 13 in sequence.

[0043] Considering the intermittent connection between the distribution port 21 and the diversion orifice 13, which causes pressure fluctuations in the fluid, the higher the rotational speed of the distribution chamber 20, the shorter the time interval between the connection between the distribution port 21 and the diversion orifice 13. Therefore, by increasing the number of diversion orifices 13, the pressure fluctuations at each diversion orifice 13 can be improved. In this embodiment, there are three diversion orifices 13; in other embodiments, the number of diversion orifices 13 can be four, five, etc., and this is not a limitation.

[0044] The impeller 30 is fixed to the top of the distribution chamber 20. The impeller 30 has a helical structure. When fluid enters through the opening 12 and comes into contact with the impeller 30, the fluid pressure is converted into a driving force for the impeller 30 to rotate, causing the impeller 30 to rotate radially.

[0045] In this embodiment, the top portion of the impeller 30 is positioned outside the opening 12, so that the protruding portion of the impeller 30 can contact the fluid immediately and without obstruction. In addition, the fluid does not need to fill the entire cavity before pushing the impeller 30, thus avoiding energy loss during the process of filling the first receiving cavity 11.

[0046] The fluid distribution device also includes an inner cavity 40, which is also cylindrical. The inner cavity 40 is fixed within the first receiving cavity 11. The inner cavity 40 has a second receiving cavity 41 and is provided with multiple diversion channels 42, which are arranged in a one-to-one correspondence with the diversion holes 13. The distribution cavity 20 is rotatably placed within the second receiving cavity 41.

[0047] The inner cavity 40 includes a cavity body 43, end plates 44, and partitions 45. End plates 44 are fixed to both ends of the cavity body 43. Partitions 45 are spaced apart between the end plates 44. Multiple flow-diverting cavities 22 are formed between the end plates 44 and 45, the outer wall of the cavity body 43, and the inner wall of the outer cavity 10. Each flow-diverting cavity 22 corresponds to a flow-diverting orifice 13. Thus, before the fluid flows from the second receiving cavity 41 into the flow-diverting orifice 13, a certain amount of fluid can be temporarily stored in the flow-diverting cavity 22, and then evenly distributed into each flow-diverting orifice 13, improving the pressure fluctuation phenomenon of the fluid in the branch pipe 70.

[0048] The axial length of the flow divider 22 is greater than that of the flow divider channel 42 and the flow divider orifice 13. This allows sufficient time and space for the fluid pressure within the flow divider 22 to reach a high degree of equilibrium and stability, thus improving the stability of the fluid flow.

[0049] The fluid distribution device also includes a first bearing 50, and an annular groove 441 communicating with the second receiving cavity 41 is provided on the end plate 44. The first bearing 50 is placed in the annular groove 441 and rotates with the distribution cavity 20 to reduce the pressure loss caused by the distribution cavity 20 and increase the rotational speed of the distribution cavity 20. In this embodiment, the first bearing 50 is a rolling bearing. In another embodiment, the first bearing 50 can also be a sliding bearing, so that the distribution cavity 20 is in a floating state when rotating.

[0050] Figures 5-7Another fluid distribution device is shown. The outer cavity 10 is cylindrical and has a first receiving cavity 11. The bottom of the outer cavity 10 has an opening 12 communicating with the first receiving cavity 11. A diversion hole 13 is provided at the bottom of the outer cavity 10 and communicates with the first receiving cavity 11. There are multiple diversion holes 13 of the same shape, and the multiple diversion holes 13 are arranged at equal intervals in the radial direction.

[0051] The first receiving cavity 11 includes an upper cavity 111 and a lower cavity 112. A second bearing 60 is provided at the connection between the upper cavity 111 and the lower cavity 112. The distributing cavity 20 is rotatably engaged with the second bearing 60 and is placed inside the lower cavity 112.

[0052] The radial dimension of the lower cavity 112 is larger than that of the upper cavity 111. The smaller radial dimension of the upper cavity 111 allows the fluid to flow more concentratedly and directionally at high speed, and also facilitates the rotation of the distribution cavity 20. On the other hand, the increased radial dimension of the lower cavity 112 can slow down the high-speed fluid flowing in from the upper cavity 111, and the increased dimension can smoothly and gently receive the fluid. Furthermore, the fluid can be evenly distributed from the opening 12 to the diversion hole 13.

[0053] The dispensing cavity 20 is also cylindrical and is rotatably placed inside the first receiving cavity 11. The dispensing port 21 is located on the bottom of the dispensing cavity 20, so that when the dispensing cavity 20 rotates, the dispensing port 21 can flow through the diversion hole 13 in sequence.

[0054] Considering the intermittent connection between the distribution port 21 and the diversion orifice 13, which causes pressure fluctuations in the fluid, the higher the rotational speed of the distribution chamber 20, the shorter the time interval between the connection between the distribution port 21 and the diversion orifice 13. Therefore, by increasing the number of diversion orifices 13, the pressure fluctuations at each diversion orifice 13 can be improved. In this embodiment, there are three diversion orifices 13; in other embodiments, the number of diversion orifices 13 can be four, five, etc., and this is not a limitation.

[0055] A flow divider 22 is formed between the bottom wall of the distribution cavity 20 and the bottom wall of the lower cavity 112. In this way, before the fluid flows into the flow divider hole 13 from the opening 12, a certain amount of fluid can be temporarily stored in the flow divider 22, and then flow evenly into each flow divider hole 13, which improves the pressure fluctuation phenomenon of the fluid in the branch pipe 70.

[0056] The impeller 30 is fixed to the top of the distribution chamber 20. The impeller 30 has a helical structure. When fluid enters through the opening 12 and comes into contact with the impeller 30, the fluid pressure is converted into a driving force for the rotor to rotate, causing the impeller 30 to rotate radially.

[0057] In this embodiment, the top portion of the impeller 30 is positioned outside the opening 12, so that the protruding portion of the impeller 30 can contact the fluid immediately and without obstruction. In addition, the fluid does not need to fill the entire cavity before pushing the impeller 30, thus avoiding energy loss during the process of filling the first receiving cavity 11.

[0058] The bottom wall of the lower cavity 112 is arc-shaped. The outline of the diversion hole 13 near the edge of the bottom wall of the lower cavity 112 is concentric with the lower cavity 112. The opening 12 of the diversion hole 13 gradually decreases from the edge of the bottom wall of the lower cavity 112 to the center of the bottom wall of the lower cavity 112.

[0059] Compared to other shapes such as circles when the diversion orifice 13 is circular, the flow area is not fully utilized due to the matching point between the circle and the rotation trajectory. This application adopts a diversion orifice 13 with a shape similar to a water droplet, which facilitates the uniform distribution of each orifice at the outlet end and maximizes the flow area, thereby reducing the impact of pressure fluctuations.

[0060] This application utilizes the principle that when the distribution cavity 20 rotates under the action of fluid, its distribution port 21 sequentially connects with the diversion holes 13 on the outer cavity 10, intermittently and evenly distributing the fluid to each diversion hole 13 before it enters the branch pipe 70. Furthermore, a diversion cavity is formed between the outer wall of the distribution cavity 20 and the inner wall of the outer cavity 10 to temporarily store a certain amount of fluid before it flows evenly to each diversion hole 13, thus improving the pressure fluctuation phenomenon of the fluid in the branch pipe 70.

[0061] This application also discloses a compressor, which includes a compressor unit (not shown in the figure), a main pipe (not shown in the figure), branch pipes 70 and a fluid distribution device. The compressor unit is connected to the first receiving cavity 11 through the main pipe, and there are multiple branch pipes 70, each of which is connected to a diversion hole 13.

[0062] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A fluid distribution device, characterized in that, It includes: An outer cavity having a first receiving cavity, the top of the outer cavity having an opening communicating with the first receiving cavity, and the side or bottom of the outer cavity having multiple diversion holes communicating with the first receiving cavity; and A dispensing cavity is rotatably placed within the first receiving cavity and is provided with a dispensing port; a flow-diverting cavity is formed between the outer wall of the dispensing cavity and the inner wall of the outer cavity. The distribution cavity rotates under the drive of fluid entering from the opening, so that the distribution port is connected to the diversion cavity and the diversion hole in sequence.

2. The fluid distribution device according to claim 1, characterized in that, It also includes an impeller, which is fixed to the top of the dispensing cavity; the impeller has a helical structure.

3. The fluid distribution device according to claim 2, characterized in that, It also includes an inner cavity, which is fixed inside the first receiving cavity; the inner cavity has a second receiving cavity and is provided with multiple diversion channels, which are arranged one-to-one with the diversion holes; the distribution cavity is rotatably placed inside the second receiving cavity.

4. The fluid distribution device according to claim 3, characterized in that, The inner cavity includes a cavity body, end plates, and partitions; the end plates are fixed at both ends of the cavity body; the partitions are spaced apart between the end plates; a plurality of flow-diverting cavities are formed between the end plates, the partitions, the outer wall of the cavity body, and the inner wall of the outer cavity body, and the flow-diverting cavities are arranged in a one-to-one correspondence with the flow-diverting holes.

5. The fluid distribution device according to claim 4, characterized in that, The axial length of the diversion cavity is greater than the axial length of the diversion channel and the diversion orifice.

6. The fluid distribution device according to claim 4, characterized in that, It also includes a first bearing, and the end plate is provided with an annular groove communicating with the second receiving cavity; the first bearing is placed in the annular groove and rotates with the dispensing cavity.

7. The fluid distribution device according to claim 1, characterized in that, The first receiving cavity includes an upper cavity and a lower cavity. A second bearing is provided at the connection between the upper cavity and the lower cavity. The dispensing cavity is rotatably engaged with the second bearing and is placed in the lower cavity. The radial dimension of the lower cavity is greater than that of the upper cavity.

8. The fluid distribution device according to claim 7, characterized in that, The flow divider cavity is formed between the bottom wall of the distribution cavity and the bottom wall of the lower cavity.

9. The fluid distribution device according to claim 7, characterized in that, The bottom wall of the lower cavity is arc-shaped, and the outline of the diversion hole near the edge of the bottom wall of the lower cavity is concentric with the lower cavity. The opening of the diversion hole gradually decreases from the edge of the bottom wall of the lower cavity towards the center of the bottom wall of the lower cavity.

10. A compressor, characterized in that, The device includes a compressor unit, a main pipe, branch pipes, and a fluid distribution device according to any one of claims 1-9, wherein the compressor unit is connected to the first receiving cavity through the main pipe, and the branch pipes are multiple and are respectively connected to the diversion holes.

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