Reservoir and compressor
By setting a vent hole in the vertical section of the liquid receiver exhaust pipe, the problem of liquid refrigerant accumulation is solved, achieving efficient gas-liquid separation and reducing the risk of liquid slugging, thus improving the safety and operating efficiency of the compressor.
Patent Information
- Application Number
- CN202520413771.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-11
AI Technical Summary
In existing liquid receivers, liquid refrigerant tends to accumulate in the second chamber, resulting in low gas-liquid separation efficiency and increased risk of liquid slugging, threatening the safe operation of the compressor.
A vent is installed in the vertical section of the exhaust pipe of the liquid receiver. The distance between the vent and the middle plate shall not exceed 1/3 of the vertical section length to ensure that the gaseous refrigerant passes through the exhaust pipe and the liquid refrigerant flows smoothly into the bottom of the second chamber, avoiding accumulation.
It improves gas-liquid separation efficiency, reduces the risk of liquid slugging, and enhances the safety and reliability of compressor operation.
Smart Images
Figure CN223869539U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of liquid receivers, and more specifically, to a liquid receiver and a compressor. Background Technology
[0002] In the field of compressors, the receiver is a key component that performs the dual functions of gas-liquid separation and refrigerant storage. Its structural design directly affects the compressor's operating efficiency and reliability.
[0003] In related technologies, a liquid receiver is typically installed between the evaporator and compressor in a refrigeration system. By separating the gaseous and liquid refrigerant, it prevents unvaporized liquid refrigerant from entering the compressor pump and causing liquid slugging, thus ensuring the safe operation of the compressor. However, the pressure pulsations generated during the periodic intake of gas from the liquid receiver by the compressor can easily induce resonance in the receiver cavity, leading to noise problems. To address this, related technologies add an intermediate plate inside the receiver housing to change the cavity mode of the receiver and suppress resonance noise.
[0004] Specifically, the intermediate plate divides the reservoir cavity into a first cavity located at the upper part of the intermediate plate and a second cavity located at the lower part of the intermediate plate. A gap is formed between the intermediate plate and the exhaust pipe, and the first cavity and the second cavity are connected through the gap.
[0005] Under ideal operating conditions, unvaporized liquid refrigerant should settle at the bottom of the second chamber, while gaseous refrigerant should enter the compressor pump body for compression through the discharge pipe of the receiver. However, in actual operating conditions, gaseous refrigerant tends to accumulate in the second chamber. Due to the gas accumulation effect in the second chamber, the liquid refrigerant in the first chamber is unable to flow smoothly into the bottom of the second chamber due to gas resistance, leading to liquid refrigerant buildup in the first chamber. This problem not only reduces gas-liquid separation efficiency but also causes liquid refrigerant to rise in position, potentially entering the compressor pump body from the discharge pipe, increasing the risk of liquid slugging in the compressor pump body and threatening the safe operation of the compressor.
[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0007] In view of this, the present disclosure provides a liquid receiver and a compressor to at least solve the problems of liquid refrigerant entering the compressor pump body and low gas-liquid separation efficiency of the existing liquid receiver.
[0008] In one aspect, embodiments of this disclosure provide a liquid reservoir, comprising:
[0009] case;
[0010] The air intake pipe is connected to the top of the housing and communicates with the inside of the housing.
[0011] The exhaust pipe includes a vertical section located inside the housing and an outlet section located outside the housing. The outlet section is connected to the bottom end of the housing, and the exhaust pipe communicates with the inside of the housing.
[0012] An intermediate plate is fitted onto the vertical section, dividing the interior of the shell into a first cavity located above the intermediate plate and a second cavity located below the intermediate plate, with the first cavity and the second cavity communicating with each other.
[0013] The exhaust pipe has a vent hole in the vertical section and located in the second cavity. The distance between the vent hole and the intermediate plate is H1, and the length of the vertical section in the second cavity is L, where H1≤1 / 3L.
[0014] In some embodiments, the diameter of the vent is D1, the inner diameter of the vertical section is D2, and 1 / 10D2≤D1≤1 / 5D2.
[0015] In some embodiments, the exhaust pipe has at least two vent holes, each of which is opened in the vertical section and located in the second cavity.
[0016] In some embodiments, the intermediate plate is located in the region at a height of 1 / 3 to 1 / 2 of the top of the housing.
[0017] In some embodiments, a filter assembly is further provided between the intake pipe and the exhaust pipe.
[0018] In some embodiments, the reservoir has a working state in which liquid refrigerant is stored in a second cavity. In the working state, a third cavity is formed between the liquid surface of the liquid refrigerant and the intermediate plate. A vent is located above the liquid surface of the liquid refrigerant. The third cavity and the interior of the vertical section are connected through the vent.
[0019] In some embodiments, a gap is formed between the side of the intermediate plate and the inner wall of the housing, the first cavity and the second cavity are connected through the gap, and the interior of the first cavity and the vertical section are connected sequentially through the gap, the third cavity and the vent hole.
[0020] In some embodiments, the distance between the vent and the liquid surface of the liquid refrigerant is H2, where H2 > H1.
[0021] In some embodiments, the reservoir includes at least two vent pipes, at least one of which has a vent hole in its vertical section.
[0022] On the other hand, embodiments of this disclosure also provide a compressor that includes the liquid receiver of any of the above.
[0023] Compared with the prior art, this disclosure has at least the following technical effects:
[0024] The liquid receiver and compressor disclosed herein allow gaseous refrigerant in the second chamber to enter the exhaust pipe through the vent, preventing the accumulation of gaseous refrigerant in the second chamber during operation. This allows the liquid refrigerant in the first chamber to flow smoothly into the bottom of the second chamber, thus preventing the accumulation of liquid refrigerant in the first chamber. This also prevents the problem of liquid refrigerant entering the compressor pump body from the exhaust pipe due to the rise in the position of the liquid refrigerant, reducing the risk of liquid slugging in the compressor pump body, improving the safety of compressor operation, and improving the gas-liquid separation efficiency of the liquid receiver for refrigerant. Attached Figure Description
[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0026] Figure 1 This is a schematic diagram of the structure of a liquid reservoir provided in this disclosure;
[0027] Figure 2 This is a partial enlarged view of the intermediate plate of a liquid reservoir provided in this disclosure.
[0028] Figure label:
[0029] 10. Shell
[0030] 20 Intake pipe
[0031] 30 Exhaust pipe
[0032] 31 Vertical segment
[0033] 32 outflow section
[0034] 33 Vent holes
[0035] 40 Intermediate Plate
[0036] 51 First cavity
[0037] 52 Second cavity
[0038] 53 Third cavity
[0039] 54 gap
[0040] 60 Liquid refrigerant Detailed Implementation
[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.
[0042] The use of terms such as "first," "second," and similar terms in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Furthermore, in the description of this disclosure, the terms "upper," "lower," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These are for ease of description only and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.
[0043] It should be noted that, unless otherwise specified, the embodiments of this disclosure and the features in different embodiments can be combined with each other.
[0044] On one hand, such as Figure 1 As shown, an embodiment of this disclosure provides a liquid reservoir, including: a housing 10, an air inlet pipe 20, an exhaust pipe 30, and an intermediate plate 40.
[0045] Specifically, the intake pipe 20 is connected to the top of the housing 10 and communicates with the interior of the housing 10. The exhaust pipe 30 includes a vertical section 31 located inside the housing 10 and an outlet section 32 located outside the housing 10. The outlet section 32 is connected to the bottom of the housing 10, and the exhaust pipe 30 communicates with the interior of the housing 10. An intermediate plate 40 is fitted onto the vertical section 31, dividing the interior of the housing 10 into a first cavity 51 located above the intermediate plate 40 and a second cavity 52 located below the intermediate plate 40. The first cavity 51 communicates with the second cavity 52. The exhaust pipe 30 has a vent 33 opened in the vertical section 31 and located in the second cavity 52. The distance between the vent 33 and the intermediate plate 40 is H1, and the length of the vertical section 31 in the second cavity 52 is L, where H1 ≤ 1 / 3L.
[0046] Furthermore, after the refrigerant in the evaporator flows into the liquid receiver, the liquid receiver performs gas-liquid separation on the refrigerant. The gaseous refrigerant flows through the inlet pipe 20 and the outlet pipe 30 before flowing into the compressor pump body for compression. Figure 1The arrows inside the intake pipe 20 and exhaust pipe 30 indicate the flow direction of the gaseous refrigerant. The unvaporized liquid refrigerant 60 flows through the intake pipe 20, the first chamber 51, and the second chamber 52, settling below the second chamber 52. Inside the exhaust pipe 30 of the reservoir, the pressure of the gaseous refrigerant gradually decreases from top to bottom due to flow losses, and gaseous refrigerant accumulates in the second chamber 52. Therefore, a pressure difference exists between the inside and outside of the exhaust pipe 30 at the horizontal vent 33, i.e., the pressure P outside the exhaust pipe 30 is higher. 管外 The air pressure P in the exhaust pipe is greater than 30. 管内 Then, within the second cavity 52, the gaseous refrigerant, under the action of the pressure difference, will flow into the exhaust pipe 30 through the vent 33 and continue to flow downwards, flowing into the compressor pump body together with the refrigerant from the evaporator that has already vaporized.
[0047] In this embodiment, a vent 33 is opened in the vertical section 31 of the exhaust pipe 30, located in the second cavity 52. This allows the gaseous refrigerant in the second cavity 52 to enter the exhaust pipe 30 through the vent 33, preventing the accumulation of gaseous refrigerant in the second cavity 52 during the operation of the liquid receiver. This allows the liquid refrigerant 60 in the first cavity 51 to flow smoothly into the bottom of the second cavity 52, thus preventing the accumulation of liquid refrigerant 60 in the first cavity 51. This also prevents the liquid refrigerant 60 from entering the compressor pump body from the exhaust pipe 30 due to its rising position, reducing the risk of liquid slugging in the compressor pump body, improving the safety of compressor operation, and simultaneously improving the gas-liquid separation efficiency of the liquid receiver for the refrigerant. A filter assembly is also provided between the intake pipe 20 and the exhaust pipe 30.
[0048] Furthermore, H1 can be any value among 1 / 10L, 1 / 8L, 1 / 6L, 1 / 5L, 1 / 4L, or 1 / 3L, and this disclosure does not impose any limitation on it. In this embodiment, by using H1 ≤ 1 / 3L, the problem of liquid refrigerant 60 deposited below the second cavity 52 entering the compressor pump body through the vent 33 from the exhaust pipe 30 can be further avoided, reducing the risk of liquid slugging in the compressor pump body and improving the safety of compressor operation.
[0049] Furthermore, an intermediate plate 40 is provided inside the housing 10 of the liquid receiver, and the intermediate plate is located in a region 1 / 3 to 1 / 2 of the height from the top of the housing. This can change the cavity mode of the liquid receiver, reduce the resonance of the liquid receiver cavity that is easily induced by the pressure pulsation generated during the periodic intake of air from the liquid receiver by the compressor, and improve the resonance noise of the liquid receiver.
[0050] In some embodiments, continue to refer to Figure 1The vent hole 33 has a diameter of D1, and the inner diameter of the vertical section 31 has a diameter of D2, where 1 / 10D2 ≤ D1 ≤ 1 / 5D2. Specifically, D1 can be any value among 1 / 10D2, 1 / 9D2, 1 / 8D2, 1 / 7D2, 1 / 6D2, or 1 / 5D2, and this disclosure does not impose any limitation on this. This embodiment can avoid the problem of reduced strength of the exhaust pipe 30 caused by an excessively large vent hole 33, as well as the problem of liquid refrigerant 60 splashing into the exhaust pipe 30 through the vent hole 33. At the same time, it can improve the efficiency of gaseous refrigerant entering the exhaust pipe 30 in the second cavity 52 and improve the gas-liquid separation efficiency of the refrigerant in the liquid receiver.
[0051] In some embodiments, the exhaust pipe 30 has at least two vent holes 33, each of which is located in the vertical section 31 and within the second cavity 52. This embodiment can improve the efficiency of gaseous refrigerant entering the exhaust pipe 30 within the second cavity 52 and improve the gas-liquid separation efficiency of the refrigerant in the reservoir.
[0052] In some embodiments, the maximum distance between the plurality of vent holes 33 and the intermediate plate 40 is H1, where H1 ≤ 1 / 3L. This embodiment can prevent liquid refrigerant 60 deposited below the second cavity 52 from entering the compressor pump body through any of the vent holes 33 from the exhaust pipe 30, thereby reducing the risk of liquid slugging in the compressor pump body and improving the safety of compressor operation.
[0053] In some embodiments, the diameter of the circle of equal area formed by the sum of the flow cross-sectional areas of the plurality of vent holes 33 is D1, and the diameter of the circle of equal area formed by the flow cross-sectional area of the vertical segment 31 is D2, where 1 / 10D2≤D1≤1 / 5D2. Specifically, D1 can be equal to any one of 1 / 10D2, 1 / 9D2, 1 / 8D2, 1 / 7D2, 1 / 6D2, or 1 / 5D2, and this disclosure does not impose any limitation on this. This embodiment can avoid the problem of reduced strength of the exhaust pipe 30 caused by an excessively large sum of the diameters of the vent holes 33, as well as the problem of liquid refrigerant 60 splashing into the exhaust pipe 30 through the vent holes 33. At the same time, it can improve the efficiency of gaseous refrigerant in the second cavity 52 entering the exhaust pipe 30 through all the vent holes 33, and improve the gas-liquid separation efficiency of the liquid reservoir for the refrigerant.
[0054] In some embodiments, continue to refer to Figure 1The reservoir has a second chamber 52 containing liquid refrigerant 60 in its operating state. In this state, a third chamber 53 is formed between the liquid surface of the liquid refrigerant 60 and the intermediate plate 40. A vent 33 is located above the liquid surface of the liquid refrigerant 60, and the third chamber 53 is connected to the interior of the vertical section 31 through the vent 33. Specifically, in the operating state of the reservoir, because the liquid refrigerant 60 is deposited at the bottom of the second chamber 52, gaseous refrigerant further accumulates in the third chamber 53. This embodiment allows the gaseous refrigerant in the third chamber 53 to enter the exhaust pipe 30 through the vent 33, preventing the accumulation of gaseous refrigerant in the third chamber 53 during the reservoir's operating state. This allows the liquid refrigerant 60 in the first chamber 51 to flow smoothly into the bottom of the second chamber 52, thereby preventing the liquid refrigerant 60 from accumulating in the first chamber 51.
[0055] In some embodiments, such as Figure 1 and Figure 2 As shown, a gap 54 is formed between the intermediate plate 40 and the vertical section 31. The first cavity 51 and the second cavity 52 are connected through the gap 54. The interiors of the first cavity 51 and the vertical section 31 are connected sequentially through the gap 54, the third cavity 53, and the vent 33. In this embodiment, the liquid refrigerant 60 in the first cavity 51 can flow smoothly into the bottom of the second cavity 52 through the gap 54, preventing the liquid refrigerant 60 from accumulating in the first cavity 51.
[0056] In some embodiments, continue to refer to Figure 1 The distance between the vent 33 and the liquid surface of the liquid refrigerant 60 is H2, where H2 > H1. This embodiment can avoid the problem of liquid refrigerant 60 located at the bottom of the second cavity 52 splashing into the exhaust pipe 30 through the vent 33, thereby preventing liquid refrigerant 60 from entering the compressor pump body from the exhaust pipe 30, reducing the risk of liquid slugging in the compressor pump body, and improving the safety of compressor operation.
[0057] In some embodiments, the receiver includes at least two exhaust pipes 30, and at least one vertical section 31 of the exhaust pipe 30 has a vent 33. Specifically, the at least two exhaust pipes 30 can be connected to the cylinders of at least two compressors, meaning the receiver can be adapted to compressors with at least two cylinders. This embodiment can improve the versatility of the receiver and reduce the design and manufacturing costs of the compressor. On the other hand, embodiments of this disclosure also provide a compressor that includes the receiver of any of the above-mentioned embodiments. Specifically, the compressor of this embodiment can be at least any one of a rolling rotor compressor, a scroll compressor, a reciprocating compressor, a screw compressor, or a centrifugal compressor, and this disclosure does not limit it.
[0058] In some embodiments, the compressor further includes an evaporator and a compressor pump body. After the refrigerant in the evaporator flows into the receiver, the receiver performs gas-liquid separation on the refrigerant. The gaseous refrigerant flows through the inlet pipe 20 and the outlet pipe 30 and then flows into the compressor pump body for compression, while the unvaporized liquid refrigerant 60 is deposited below the second cavity 52 of the receiver.
[0059] It is understood that the specific implementation method and technical effects of the compressor can be found in the above-mentioned liquid receiver, and will not be repeated here.
[0060] In summary, the liquid receiver and compressor disclosed herein allow the gaseous refrigerant in the second chamber to enter the exhaust pipe through the vent, preventing the accumulation of gaseous refrigerant in the second chamber during operation. This allows the liquid refrigerant in the first chamber to flow smoothly into the bottom of the second chamber, thus preventing the accumulation of liquid refrigerant in the first chamber. Consequently, this avoids the problem of liquid refrigerant entering the compressor pump body from the exhaust pipe due to the rising position of the liquid refrigerant, reducing the risk of liquid slugging in the compressor pump body, improving the safety of compressor operation, and simultaneously improving the gas-liquid separation efficiency of the liquid receiver for the refrigerant.
[0061] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this disclosure and should not be construed as limiting the specific implementation of this disclosure to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this disclosure, and all such modifications and substitutions should be considered within the scope of protection of this disclosure.
Claims
1. A liquid reservoir, characterized in that, include: case; An air intake pipe is connected to the top of the housing and communicates with the interior of the housing; An exhaust pipe, comprising a vertical section located inside the housing and an outflow section located outside the housing, the outflow section being connected to the bottom end of the housing, and the exhaust pipe communicating with the interior of the housing; An intermediate plate is sleeved on the vertical section, and the intermediate plate divides the interior of the shell into a first cavity located above the intermediate plate and a second cavity located below the intermediate plate, the first cavity and the second cavity being in communication. The exhaust pipe has a vent hole opened in the vertical section and located in the second cavity. The distance between the vent hole and the intermediate plate is H1, and the length of the vertical section in the second cavity is L, where H1 ≤ 1 / 3L.
2. The liquid reservoir according to claim 1, characterized in that, The diameter of the vent is D1, and the inner diameter of the vertical section is D2, where 1 / 10D2≤D1≤1 / 5D2.
3. The liquid reservoir according to claim 2, characterized in that, The exhaust pipe has at least two vent holes, each of which is located in the vertical section and in the second cavity.
4. The liquid reservoir according to claim 1, characterized in that, The intermediate plate is located in the region at a height of 1 / 3 to 1 / 2 of the top of the shell.
5. The liquid reservoir according to claim 1, characterized in that, A filter assembly is also provided between the intake pipe and the exhaust pipe.
6. The liquid reservoir according to claim 1 or 2, characterized in that, The liquid reservoir has a working state in which liquid refrigerant is stored in the second cavity. In the working state, a third cavity is formed between the liquid surface of the liquid refrigerant and the intermediate plate. The vent is located above the liquid surface of the liquid refrigerant. The third cavity and the interior of the vertical section are connected through the vent.
7. The liquid reservoir according to claim 6, characterized in that, A gap is formed between the intermediate plate and the vertical section, the first cavity and the second cavity are connected through the gap, and the interiors of the first cavity and the vertical section are connected sequentially through the gap, the third cavity and the vent.
8. The liquid reservoir according to claim 6, characterized in that, The distance between the vent and the liquid surface of the liquid refrigerant is H2, where H2 > H1.
9. The liquid reservoir according to claim 1, characterized in that, The reservoir includes at least two exhaust pipes, and at least one of the vertical sections of the exhaust pipe has the vent.
10. A compressor, characterized in that, Includes the reservoir according to any one of claims 1 to 9.