Outlet pipe and liquid reservoir

Abstract

The present invention provides an air outlet pipe and a liquid storage device. The air outlet pipe includes a pipe body and a resonance cavity. At least one air inlet hole is formed in the pipe body. The resonance cavity is located inside the cylinder body of the liquid storage device. The first end of the pipe body extends into the cylinder body of the liquid storage device and is communicated with the resonance cavity. The second end of the pipe body is fixed on the cylinder body of the liquid storage device. The air outlet pipe provided by the present invention can form a Helmholtz resonance cavity inside the cylinder body of the liquid storage device. When the resonance frequency of the resonance cavity is the same as the vertical first-order cavity mode frequency of the liquid storage device, the transmission loss of the transmitted sound in this low-frequency band can be increased, thereby effectively weakening the transmitted sound. At the same time, the air outlet pipe provided by the present invention also has a great improvement in the transmitted sound in the high-frequency band.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to an air outlet pipe and a liquid receiver. Background Art

[0002] In an air conditioner indoor unit, transmitted sound often appears. To solve the problem of transmitted sound in the air conditioner indoor unit, it is usually improved by adding multiple mufflers in the system pipeline. However, a lot of transmitted sound is transmitted to the air conditioner indoor unit through the liquid receiver. It is found that the transmission loss of the liquid receiver in some low-frequency bands is small, and the existing air outlet pipe of the liquid receiver is difficult to weaken the transmitted sound or even cannot weaken the transmitted sound at all. Therefore, it is necessary to design an air outlet pipe applied to the liquid receiver and capable of effectively improving the transmitted sound in the liquid receiver. Summary of the Invention

[0003] The purpose of the present invention is to provide an air outlet pipe and a liquid receiver to solve the problem that the transmission loss of the transmitted sound in some low-frequency bands in the liquid receiver in the prior art is small.

[0004] Another purpose of the present invention is to solve the problem that the air outlet pipe of the liquid receiver is difficult to even unable to weaken the transmitted sound.

[0005] To solve the above technical problems, the present invention provides an air outlet pipe applied to a liquid receiver. The air outlet pipe includes a connected pipe body and a resonance cavity, and at least one air inlet hole is opened on the pipe body; the resonance cavity is located in the cylinder body of the liquid receiver, the first end of the pipe body extends into the cylinder body of the liquid receiver and is communicated with the resonance cavity, and the second end of the pipe body is fixed on the cylinder body of the liquid receiver.

[0006] Optionally, the connection between the resonance cavity and the first end of the pipe body is a detachable connection.

[0007] Optionally, the air outlet pipe further includes a first connecting pipe and a second connecting pipe that cooperate with each other. The first connecting pipe is connected to the resonance cavity, the second connecting pipe is connected to the first end of the pipe body, and the pipe body and the resonance cavity are communicated through the first connecting pipe and the second connecting pipe.

[0008] Optionally, the second connecting pipe includes a first pipe section and a second pipe section that are connected and communicated. The first pipe section is connected to the first connecting pipe, and the second pipe section is connected to the pipe body, wherein the inner diameter of the first pipe section is greater than the outer diameter of the first connecting pipe.

[0009] Optionally, the inner diameter of the first pipe section is smaller than the inner diameter of the pipe body, and the maximum value of the inner diameter of the second pipe section is not greater than the inner diameter of the pipe body.

[0010] Optionally, the outer diameter of the first pipe section is smaller than the outer diameter of the pipe body, and the maximum value of the outer diameter of the second pipe section is not greater than the outer diameter of the pipe body.

[0011] Optionally, a porous structure is provided inside the resonance cavity.

[0012] Optionally, the number of the air inlet holes is at least two, at least two of the air inlet holes are opened on the side wall of the first end of the pipe body, and are arranged along the circumferential direction of the pipe body.

[0013] The present invention also provides a liquid storage device, including a cylinder body and the air outlet pipe as described above.

[0014] Optionally, the liquid storage device further includes a filter screen support sleeved on the air outlet pipe, and the filter screen support is located between the resonance cavity and the pipe body, and the periphery of the filter screen support is connected to the inner wall of the cylinder body.

[0015] Compared with the prior art, the air outlet pipe provided by the present invention includes a connected pipe body and a resonance cavity, and at least one air inlet hole is opened on the pipe body; the resonance cavity is located inside the cylinder body of the liquid storage device, the first end of the pipe body extends into the cylinder body of the liquid storage device and is communicated with the resonance cavity, and the second end of the pipe body is fixed on the cylinder body of the liquid storage device. Thus, according to the Helmholtz resonance sound absorption principle, the resonance cavity additionally provided at the end of the pipe body and the pipe body can form a Helmholtz resonance cavity. When the resonance frequency of the resonance cavity is the same as the vertical first-order cavity mode frequency of the liquid storage device, the transmission loss of the transmitted sound in this low-frequency band can be increased, thereby effectively weakening the transmitted sound; and through the air inlet hole, the gaseous refrigerant in the liquid storage device can be ensured to flow back into the compressor through the air outlet pipe. In addition, the air outlet pipe provided by the present invention also has a great improvement on the transmitted sound in the high-frequency band. Since the liquid storage device provided by the present invention includes a cylinder body and the air outlet pipe as described above, the liquid storage device provided by the present invention has all the advantages of the air outlet pipe as described above, which will not be elaborated here. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a pipe body provided by an embodiment of the present invention;

[0017] Figure 2 It is a schematic structural diagram of a resonance cavity provided by an embodiment of the present invention;

[0018] Figure 3 It is a schematic structural diagram of a liquid storage device provided by an embodiment of the present invention;

[0019] Figure 4 It is a schematic structural diagram of a filter screen support provided by an embodiment of the present invention;

[0020] Figure 5The waveform diagram showing the variation of the transmission loss of the liquid reservoir provided by an embodiment of the present invention and that of the existing liquid reservoir with frequency.

[0021] Among them, the reference numerals are as follows:

[0022] 100 - Cylinder body;

[0023] 200 - Air outlet pipe, 210 - Pipe body, 211 - Air inlet hole, 220 - Resonance cavity, 221 - First connecting pipe, 230 - Second connecting pipe, 231 - First pipe section, 232 - Second pipe section;

[0024] 300 - Air suction pipe;

[0025] 400 - Filter screen support, 410 - Support plate, 420 - Fixing part, 430 - Flow guiding hole, 431 - Flow guiding plate, 440 - Mounting hole. Detailed implementation manners

[0026] To make the objectives, advantages and features of the present invention clearer, the following further elaborates on the air outlet pipe and the liquid reservoir proposed by the present invention in conjunction with Figures 1 to 5 It should be noted that the drawings are in a very simplified form and all use non - precise scales, only for conveniently and clearly assisting in explaining the objectives of the embodiments of the present invention, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substantial significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0027] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0028] In the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The core idea of the present invention is to provide an air outlet pipe and a liquid storage device to form a Helmholtz resonance cavity on the air outlet pipe, increase the transmission loss of the transmitted sound in the liquid storage device, and thus achieve the purpose of effectively weakening the transmitted sound.

[0030] Figure 1 It is a schematic structural diagram of a pipe body provided by an embodiment of the present invention. Figure 2 It is a schematic structural diagram of a resonance cavity provided by an embodiment of the present invention. Figure 3 It is a schematic structural diagram of a liquid storage device provided by an embodiment of the present invention. As Figures 1 to 3 shown, this embodiment provides an air outlet pipe 200, which is applied to a liquid storage device. The air outlet pipe 200 includes a pipe body 210 and a resonance cavity 220. At least one air inlet hole 211 is opened on the pipe body 210; both the resonance cavity 220 and the pipe body 210 are located in the cylinder body 100 of the liquid storage device. The first end of the pipe body 210 extends into the cylinder body 100 of the liquid storage device and is communicated with the resonance cavity 220, and the second end of the pipe body 210 is fixed on the cylinder body 100 of the liquid storage device.

[0031] Thus, according to the Helmholtz resonance absorption principle, the resonance cavity 220 additionally provided at the end of the pipe body 210 and the pipe body 210 can form a Helmholtz resonance cavity. When the resonance frequency of the resonance cavity 220 is the same as the vertical first-order cavity mode frequency of the liquid storage device, the transmission loss of the transmitted sound in this low-frequency band can be increased, thereby effectively weakening the transmitted sound. Moreover, through the air inlet hole 211, it can be ensured that the gaseous refrigerant in the liquid storage device can flow back into the compressor through the air outlet pipe 200. In addition, the air outlet pipe 200 provided in this embodiment also has a great improvement on the transmitted sound in the high-frequency band.

[0032] Preferably, as Figures 1 to 3As shown, the resonance cavity 220 and the tube body 210 are connected in a detachable connection manner by mutual clamping. For example, the tube body 210 is inserted into the resonance cavity 220, or a first clamping portion is provided on the resonance cavity 220, and a second clamping portion cooperating with the first clamping portion is provided on the tube body 210. The detachable connection between the tube body 210 and the resonance cavity 220 is achieved by mutual clamping of the first clamping portion and the second clamping portion. Thus, this setting facilitates the installation and disassembly of the resonance cavity 220, and at the same time is beneficial to later maintenance and replacement of resonance cavities 220 of different sizes. In addition, during specific implementation, the connection manner between the tube body 210 and the resonance cavity 220 is not limited, and it can also be welding, bonding or integral molding, etc.

[0033] The following will Figures 1 to 3 make a more detailed description of the air outlet pipe 200 provided by the embodiment.

[0034] The air outlet pipe 200 further includes a first connecting pipe 221 and a second connecting pipe 230 that cooperate with each other. The first connecting pipe 221 is connected to the resonance cavity 220, and the second connecting pipe 230 is connected to the first end of the tube body 210. The tube body 210 and the resonance cavity 220 are connected through the first connecting pipe 221 and the second connecting pipe 230. Thus, this setting enables the resonance cavity 220 and the tube body 210 to be connected by a mutual clamping manner of the first connecting pipe 221 and the second connecting pipe 230. It can be either that the first connecting pipe 221 is inserted into the second connecting pipe 230, or that the second connecting pipe 230 is inserted into the first connecting pipe 221 to achieve the mutual cooperation between the first connecting pipe 221 and the second connecting pipe 230.

[0035] Furthermore, the second connecting pipe 230 includes a first pipe section 231 and a second pipe section 232 that are connected and communicate with each other. The first pipe section 231 is used to be connected to the first connecting pipe 221, and the second pipe section 232 is connected to the tube body 210, wherein the inner diameter of the first pipe section 231 is larger than the outer diameter of the first connecting pipe 221. Thus, by providing the first pipe section 231 to be connected to the first connecting pipe 221 and setting the inner diameter of the first pipe section 231 to be larger than the outer diameter of the first connecting pipe 221, the first connecting pipe 221 can be inserted into the first pipe section 231 to achieve the detachable connection between the resonance cavity 220 and the tube body 210. It should be noted that in some other embodiments, the outer diameter of the first pipe section 231 is smaller than the inner diameter of the first connecting pipe 221. At this time, the first connecting pipe 221 can be sleeved on the first pipe section 231 to achieve the detachable connection between the resonance cavity 220 and the tube body 210.

[0036] The inner diameter of the first pipe section 231 is smaller than the inner diameter of the pipe body 210, and the maximum value of the inner diameter of the second pipe section 232 is not greater than the inner diameter of the pipe body 210. Thus, the second connecting pipe 230 configured in this way is a reduced-diameter pipe, such that the inner diameter value of the second connecting pipe 230 can be the smallest relative to the inner diameter value of the resonance cavity 220 and the inner diameter value of the pipe body 210, thereby facilitating the first connecting pipe 221, the second connecting pipe 230, the pipe body 210, and the resonance cavity 220 to jointly form a Helmholtz resonance cavity, effectively increasing the transmission loss of the transmitted sound.

[0037] Preferably, the outer diameter of the first pipe section 231 is smaller than the outer diameter of the pipe body 210, and the maximum value of the outer diameter of the second pipe section 232 is not greater than the outer diameter of the pipe body 210. Thus, when the air outlet pipe 200 provided in this embodiment is installed in the liquid storage device, and a filter screen support 400 (refer to Figure 4 shown) is sleeved on the air outlet pipe 200, such that the filter screen support 400 is located between the pipe body 210 and the resonance cavity 220, this configuration makes the outer diameter of the first pipe section 231 smaller than the maximum value of the outer diameter of the second pipe section 232, so that the second pipe section 232 can effectively support the filter screen support 400.

[0038] More specifically, the inner diameter of the first pipe section 231 is equal to the minimum value of the inner diameter of the second pipe section 232, and the outer diameter of the first pipe section 231 is equal to the minimum value of the inner diameter of the second pipe section 232; the maximum value of the inner diameter of the second pipe section 232 is equal to the inner diameter of the pipe body 210, and the maximum value of the outer diameter of the second pipe section 232 is equal to the outer diameter of the pipe body 210. Thus, this configuration makes the second pipe section 232 have a frustum-shaped pipe structure, thereby facilitating the connection between the first pipe section 231 and the pipe body 210 to achieve the purpose of reducing the diameter.

[0039] In a preferred solution, a porous structure is provided inside the resonance cavity 220, and the porous structure is made of sound-absorbing material. Thus, through the porous structure made of sound-absorbing material, in cooperation with the resonance cavity 220, the transmission loss of the transmitted sound can be increased more effectively, thereby effectively weakening the transmitted sound. In addition, in some other embodiments, porous sound-absorbing materials can also be directly placed inside the resonance cavity 220.

[0040] The resonance cavity 220 preferably has an ellipsoidal shape, and the short diameter of the resonance cavity 220 is greater than the inner diameter of the first pipe section 231. Thus, the ellipsoidal resonance cavity 220 is more conducive to forming a Helmholtz resonance cavity with the pipe body 210. At the same time, the resonance cavity 220 with a larger outer diameter is more conducive to the first connecting pipe 221 being inserted into the first pipe section 231.

[0041] The number of the air inlets 211 is preferably multiple, and the multiple air inlets 211 are located on the side wall of one end of the pipe body 210 close to the resonance cavity 220 and are uniformly arranged along the circumferential direction of the pipe body 210. Thus, arranging the air inlets 211 at one end of the pipe body 210 close to the resonance cavity 220 can effectively prevent the liquid refrigerant from being sucked into the pipe body 210.

[0042] To implement the above idea, this embodiment further provides a liquid storage device. As Figure 3 shown, the liquid storage device includes the outlet pipe 200, the suction pipe 300 and the cylinder body 100 as described above, and the suction pipe 300 and the outlet pipe 200 are respectively connected to two opposite ends of the cylinder body 100.

[0043] As Figure 3 shown, the liquid storage device may further include a filter screen support 400 sleeved on the outlet pipe 200. The filter screen support 400 is located between the resonance cavity 220 and the pipe body 210, and the outer periphery of the filter screen support 400 is connected to the inner wall of the cylinder body 100. Thus, the filter screen can be effectively supported by the filter screen support 400, facilitating the filtration of the refrigerant sucked from the suction pipe 300.

[0044] Please refer to Figure 3 and Figure 4 , wherein, Figure 4 schematically shows the structural schematic diagram of the filter screen support provided by the present invention. As Figure 3 and Figure 4 shown, the filter screen support 400 includes a connected support plate 410 and a fixing portion 420. The fixing portion 420 is provided with a mounting hole 440 for passing through the first pipe section 231. The support plate 410 is provided with a plurality of diversion holes 430. The plurality of diversion holes 430 are symmetrically distributed about the center along the circumferential direction of the filter screen support 400, and a diversion plate 431 matching each diversion hole 430 is provided on each diversion hole 430. The diversion plate 431 is arranged on the side away from the filter screen support 400 and close to the suction pipe 300. Since the maximum outer diameter of the second pipe section 232 is greater than the outer diameter of the first pipe section 231, the filter screen support 400 can be more effectively sleeved on the first pipe section 231. It should be noted that the filter screen support 400 and the first pipe section 231 can also be fixedly connected by connection methods such as welding, bonding, and integral molding; the fixing portion 420 is preferably a cylindrical pipe, and the inner wall of the cylindrical pipe is used to connect with the first pipe section 231.

[0045] Figure 5The waveform diagram shows the transmission loss varying with frequency of the liquid reservoir provided by an embodiment of the present invention and that of the existing liquid reservoir. And Figure 5 in the figure, the vertical coordinate is the transmission loss and the horizontal coordinate is the frequency. It can be seen from Figure 5 that, compared with the existing liquid reservoir, a resonance cavity is provided on the air outlet pipe of the liquid reservoir provided by this embodiment, which can effectively increase the transmission loss of the transmitted sound in a specific low-frequency band in the liquid reservoir, thereby weakening the transmitted sound in the liquid reservoir, and at the same time, there is also a great improvement in the transmitted sound in some high-frequency bands.

[0046] In summary, compared with the prior art, the air outlet pipe provided by the present invention includes a connected pipe body and a resonance cavity, and at least one air inlet hole is provided on the pipe body; the resonance cavity is located in the cylinder body of the liquid reservoir, the first end of the pipe body extends into the cylinder body of the liquid reservoir and is communicated with the resonance cavity, and the second end of the pipe body is fixed on the cylinder body of the liquid reservoir. Thus, according to the Helmholtz resonance absorption principle, the resonance cavity additionally provided at the end of the pipe body and the pipe body can form a Helmholtz resonance cavity. When the resonance frequency of the resonance cavity is the same as the vertical first-order cavity mode frequency of the liquid reservoir, the transmission loss of the transmitted sound in this low-frequency band can be increased, thereby effectively weakening the transmitted sound; and the gaseous refrigerant in the liquid reservoir can be ensured to flow back into the compressor through the air outlet pipe through the air inlet hole. In addition, the air outlet pipe provided by the present invention also has a great improvement in the transmitted sound in the high-frequency band. Since the liquid reservoir provided by the present invention includes a cylinder body and the air outlet pipe as described above, the liquid reservoir provided by the present invention has all the advantages of the air outlet pipe as described above, which will not be elaborated here.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A liquid reservoir, characterized in that, It includes a cylinder body, an air outlet pipe and an air suction pipe. The air outlet pipe includes a pipe body and a resonance cavity. At least one air inlet hole is formed in the pipe body. The resonance cavity is located inside the cylinder body of the liquid storage device. The first end of the pipe body extends into the cylinder body of the liquid storage device and is communicated with the resonance cavity. The second end of the pipe body is fixed on the cylinder body of the liquid storage device; The air inlet hole is arranged on the side wall of the pipe body near one end of the resonance cavity and is located below the resonance cavity; The resonance cavity and the pipe body form a Helmholtz resonance cavity; The air suction pipe and the air outlet pipe are respectively connected to opposite ends of the cylinder body; There is a spaced arrangement between the resonance cavity and the air suction pipe.

2. The liquid storage device according to claim 1, wherein There is a detachable connection between the resonance cavity and the first end of the pipe body.

3. The liquid storage container according to claim 2, characterized in that, The air outlet pipe further includes a first connecting pipe and a second connecting pipe that cooperate with each other. The first connecting pipe is connected to the resonance cavity. The second connecting pipe is connected to the first end of the pipe body. The pipe body and the resonance cavity are communicated through the first connecting pipe and the second connecting pipe.

4. The liquid reservoir according to claim 3, characterized in that, The second connecting pipe includes a first pipe section and a second pipe section that are communicated with each other. The first pipe section is connected to the first connecting pipe. The second pipe section is connected to the pipe body. The inner diameter of the first pipe section is larger than the outer diameter of the first connecting pipe.

5. The liquid storage container according to claim 4, characterized in that, The inner diameter of the first pipe section is smaller than the inner diameter of the pipe body. The maximum value of the inner diameter of the second pipe section is not larger than the inner diameter of the pipe body.

6. The liquid storage device according to claim 4, wherein The outer diameter of the first pipe section is smaller than the outer diameter of the pipe body. The maximum value of the outer diameter of the second pipe section is not larger than the outer diameter of the pipe body.

7. The liquid reservoir according to any one of claims 1 to 6, characterized in that, A porous structure is provided inside the resonance cavity.

8. The liquid storage device according to any one of claims 1 to 6, characterized in that, The number of the air inlet holes is at least two, and at least two of the air inlet holes are arranged along the circumferential direction of the pipe body.

9. The liquid reservoir according to claim 1, wherein The liquid storage device further includes a filter screen support sleeved on the air outlet pipe, and the filter screen support is located between the resonance cavity and the pipe body. The periphery of the filter screen support is connected to the inner wall of the cylinder body.

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