Reservoir and compressor

Abstract

The application discloses a liquid accumulator and a compressor, and relates to the technical field of liquid accumulators, and in particular to a liquid accumulator and a compressor. The liquid accumulator comprises a shell and a liquid cup, the shell is provided with an air inlet and an air outlet at two ends respectively, and an air flow channel is formed between the air inlet and the air outlet; the liquid cup is installed in the shell, and a first air flow channel is formed between the outer circumferential wall of the liquid cup and the inner wall of the shell; in the direction from the air inlet to the air outlet, the first air flow channel comprises a first air flow section and a first noise elimination section arranged in sequence, and the maximum cross-sectional area of the first noise elimination section is greater than the maximum cross-sectional area of the first air flow section. According to the liquid accumulator, the length selection range of the noise elimination section can be expanded without changing the size of the liquid accumulator, the length of the noise elimination section which is suitable for the noise wavelength of the liquid accumulator can be obtained, and the noise reduction effect of the liquid accumulator is improved.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and in particular to a liquid receiver and compressor. Background Technology

[0002] Related technologies indicate that during the operation of a refrigeration equipment compressor, under the negative pressure suction of the compressor pump body, refrigerant flows from the evaporator of the air conditioning system into the inlet pipe of the receiver, then enters the receiver housing through the receiver's inlet pipe. After filtration and gas-liquid separation, it flows out of the receiver through the outlet pipe and is then drawn into the compressor pump body. During this process, the compressor's suction pressure cyclically changes over time, inevitably causing suction pulsations and suction noise. Currently, there are methods to reduce noise by setting a silencer cavity in the receiver. Different lengths of silencer cavities can handle noise of different wavelengths. However, related technologies typically use the cavity at the receiver's outlet as the silencer cavity. Because the receiver's internal liquid cup needs sufficient capacity, and the overall length of the receiver is limited, the length of the silencer cavity in this solution can only be selected within a small range, affecting the applicable noise range and limiting the noise reduction effect. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a liquid reservoir that can expand the range of selectable lengths of the silencing section without changing the size of the liquid reservoir, so as to obtain a silencing section length that is adapted to the noise wavelength of the liquid reservoir, thereby improving the noise reduction effect of the liquid reservoir.

[0004] The present invention also proposes a compressor having the above-mentioned liquid reservoir.

[0005] A liquid reservoir according to a first aspect embodiment of the present invention includes:

[0006] The casing has an air inlet and an air outlet at each end;

[0007] A liquid storage cup is installed inside the housing, and a first airflow channel is formed between the outer peripheral wall of the liquid storage cup and the inner wall of the housing;

[0008] Along the direction from the air inlet to the air outlet, the first airflow channel includes a first airflow section and a first silencer section arranged sequentially, wherein the maximum cross-sectional area of ​​the first silencer section is greater than the maximum cross-sectional area of ​​the first airflow section.

[0009] The liquid reservoir according to embodiments of the present invention has at least the following beneficial effects:

[0010] The length of the silencing cavity is positively correlated with the wavelength of the noise; the longer the silencing cavity, the shorter the corresponding noise wavelength. Related technologies using cavities as silencing cavities have limited applicability to a specific noise range due to the overall length of the reservoir. This invention, by setting a first silencing section within the first airflow channel within the length of the reservoir cup, significantly increases the range of possible lengths for the first silencing section. This makes it easier to obtain a silencing section length that matches the noise wavelength of the reservoir without changing its overall length, thereby improving the noise reduction effect of the reservoir.

[0011] According to some embodiments of the present invention, the outer peripheral wall of the liquid storage cup is provided with a first recess, the first recess being in communication with the first airflow channel; the first recess and the inner wall of the shell form the first sound-absorbing section.

[0012] According to some embodiments of the present invention, the inner wall of the housing has a second recess, and the second recess forms the first noise-absorbing section between the outer peripheral wall of the liquid storage cup.

[0013] According to some embodiments of the present invention, the maximum cross-sectional area of ​​the first airflow section is S1, and the maximum cross-sectional area of ​​the first noise reduction section is S2, wherein S2≥1.1*S1.

[0014] According to some embodiments of the present invention, a second airflow channel is formed between the end face of the liquid storage cup facing the air outlet and the inner wall of the housing, the second airflow channel including a second silencing section extending to and communicating with the first airflow channel.

[0015] According to some embodiments of the present invention, the first silencing section extends to and communicates with the second silencing section, and the maximum cross-sectional area of ​​the second silencing section is greater than the maximum cross-sectional area of ​​the first silencing section.

[0016] According to some embodiments of the present invention, the first airflow channel further includes a second airflow section, the second airflow section is disposed between the first silencing section and the second silencing section, the second airflow section extends to the second silencing section and communicates with the second silencing section, and the maximum cross-sectional area of ​​the second silencing section is greater than the maximum cross-sectional area of ​​the second airflow section.

[0017] According to some embodiments of the present invention, the maximum cross-sectional area of ​​the second airflow section is S3, and the maximum cross-sectional area of ​​the second noise reduction section is S4, wherein S4≥1.1*S3.

[0018] According to some embodiments of the present invention, the maximum cross-sectional area of ​​the first silencing section is S2, and the maximum cross-sectional area of ​​the second airflow section is S3, wherein S2 > S3.

[0019] According to some embodiments of the present invention, the maximum cross-sectional area of ​​the first airflow section is S1, and the maximum cross-sectional area of ​​the second airflow section is S3, wherein S3 ≥ S1.

[0020] The compressor according to a second aspect of the present invention includes the liquid receiver described above.

[0021] The compressor according to an embodiment of the present invention includes the above-described liquid receiver, and therefore has at least all the beneficial effects of the liquid receiver; the liquid receiver of this embodiment can more easily obtain a silencer section length that is adapted to the noise wavelength of the liquid receiver without changing the overall length of the liquid receiver, thereby improving the noise reduction effect of the liquid receiver and reducing the noise generated during compressor operation.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a liquid reservoir according to an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of a liquid reservoir according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram showing the cross-sectional positions of the liquid reservoir at points AA, BB, and CC according to an embodiment of the present invention;

[0027] Figure 4 for Figure 3 Schematic diagram of the cross section along the AA direction;

[0028] Figure 5 for Figure 3 Schematic diagram of the cross section in the middle BB direction;

[0029] Figure 6 for Figure 3 Schematic diagram of the cross section in the CC direction;

[0030] Figure 7 This is a schematic diagram of another structure of the second silencing section in a liquid reservoir according to an embodiment of the present invention.

[0031] Icon labels:

[0032] Housing 100, air inlet pipe 110, air outlet pipe 120, retainer 130, filter screen 131, through hole 132;

[0033] Liquid storage cup 200, first recess 201, first airflow channel 210, first airflow section 211, first noise reduction section 212, second airflow section 213, second airflow channel 220, second noise reduction section 221. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0036] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] A receiver-and-load (NAS) can be used in air conditioners, which include a compressor and an evaporator. The compressor is connected to the evaporator outlet via the NAS. When the compressor is running, the motor inside the compressor drives the crankshaft to rotate, which in turn drives a piston mounted on the eccentric part of the crankshaft to move eccentrically within the cylinder, compressing the low-temperature, low-pressure gaseous refrigerant from the NAS into a high-temperature, high-pressure state. Therefore, by placing a NAS between the compressor and the evaporator, the NAS can separate the liquid refrigerant from the low-temperature, low-pressure refrigerant from the evaporator and deliver the low-temperature, low-pressure gaseous refrigerant to the compressor. This prevents liquid refrigerant from flowing into the compressor during low-temperature startup, which could cause liquid slugging and damage to the compressor pump. Of course, this invention is not limited to this; the NAS can also be used in refrigeration equipment such as refrigerators.

[0039] During equipment operation, the compressor's suction pressure changes cyclically over time, inevitably causing suction pulsations and noise. Currently, noise reduction in liquid receivers mainly involves setting up a cavity at the liquid receiver's outlet as a silencing chamber to reduce noise. However, since liquid receivers are primarily installed in refrigeration equipment such as air conditioners or refrigerators, their installation space is limited, and the liquid cup inside the receiver needs to have sufficient capacity. Therefore, the overall length of the liquid receiver is limited, resulting in the silencing chamber length being selectable within a small range in related technologies. This affects the applicable noise range of the silencing chamber and limits the noise reduction effect. The length of the silencing cavity is positively correlated with the wavelength of the noise; the longer the silencing cavity, the shorter the corresponding noise wavelength. Related technologies using cavities as silencing cavities are limited by the overall length of the reservoir, and the applicable noise range is mainly short-wavelength noise. However, the reservoir of the first aspect of this invention is provided with a first silencing section, and this first silencing section has a large range of length options, thus enabling the reservoir to adapt to a wider range of noise wavelengths without changing the overall length of the reservoir. By selecting a first silencing section length that matches the noise wavelength of the reservoir, the noise reduction effect of the reservoir can be effectively improved. (See below for reference.) Figures 1 to 7 The liquid reservoir of the first aspect embodiment of the present invention will be described in detail below.

[0040] Reference Figure 1 , Figure 3 As shown, the liquid receiver in this embodiment of the invention includes a housing 100 and a liquid reservoir 200 installed inside the housing 100. The housing 100 is hollow inside, and an air inlet and an air outlet are formed at opposite ends of the housing 100, forming an airflow channel between the air inlet and the air outlet. The air inlet at the first end of the housing 100 is connected to an air inlet pipe 110, and the air outlet at the second end of the housing 100 is connected to an air outlet pipe 120. The liquid reservoir 200 is also hollow inside, with an opening at the first end facing the air inlet pipe 110 and a sealed second end. The interior of the liquid reservoir 200 is used to store liquid refrigerant.

[0041] In actual use, the liquid receiver is set vertically, that is, the inlet pipe 110 of the housing 100 is generally set above the outlet pipe 120. The outlet pipe 120 is connected to the compressor, and the inlet pipe 110 is used to supply refrigerant.

[0042] In an embodiment of the present invention, a retainer 130 is further provided inside the liquid reservoir. The retainer 130 is disposed inside the housing 100 and between the inlet pipe 110 and the first end of the liquid reservoir 200. The retainer 130 is connected to the housing 100. The retainer 130 is provided with a through hole 132 for refrigerant to pass through. (Refer to...) Figure 2As shown, the through hole 132 is funnel-shaped and located at the center of the retainer 130. The first end opening of the liquid receiver 200 is aligned with the through hole 132 of the retainer 130. A filter screen 131 is also provided at the end of the retainer 130 facing the inlet pipe 110. The filter screen 131 is used to filter the refrigerant to prevent impurities in the refrigerant from entering the liquid receiver and then entering the compressor, causing damage to the compressor. The refrigerant entering the liquid receiver is generally a gas-liquid mixture, that is, including gaseous and liquid refrigerant. The liquid refrigerant drips into the liquid receiver 200 after passing through the through hole 132 of the retainer 130 and is stored in the liquid receiver 200. The gaseous refrigerant enters the airflow channel between the outer peripheral wall of the liquid receiver 200 and the housing 100, and then enters the outlet pipe 120 through the airflow channel, and finally enters the compressor.

[0043] Reference Figures 1 to 7 In an embodiment of the present invention, along the flow direction of the gas in the reservoir, that is, from the inlet pipe 110 to the outlet pipe 120, a first airflow channel 210 is formed between the outer peripheral wall of the reservoir cup 200 and the inner wall of the shell 100. The first airflow channel 210 includes a first airflow section 211 and a first silencer section 212 arranged sequentially. That is, the first airflow section 211 is located at the first end of the first airflow channel 210 near the reservoir cup 200, and the first silencer section 212 is located at the second end of the first airflow channel 210 near the reservoir cup 200. The first airflow section 211 and the first silencer section 212 are connected.

[0044] In an embodiment of the present invention, reference is made to Figure 1 , Figure 3As shown, if the maximum length of the first silencing section 212 along the length of the reservoir is L1, then L1 is constructed as: L1 = λ / 4n; where λ is the wavelength of the sound wave and n is the speed of sound. Within the reservoir, the speed of sound is essentially constant. Therefore, the maximum length L1 of the first silencing section 212 along the length of the reservoir can correspond to sound waves of different wavelengths. The larger the value of L1, the longer the wavelength of the noise; the smaller the value of L1, the shorter the wavelength of the noise. Shorter wavelength sound waves have poorer penetration and shorter transmission distances, while longer wavelength sound waves have better penetration and longer transmission distances. Currently, most reservoirs form a silencing cavity by creating a cavity between the second end of the reservoir cup 200 and the air outlet of the shell 100. As mentioned above, the overall length of the reservoir is limited, therefore the length of the silencing cavity can only be selected within a small range, affecting the applicable noise range of the silencing cavity and resulting in limited silencing effect of the reservoir. As can be seen from the formula, most current liquid reservoirs are mainly suitable for short-wavelength noise, while longer-wavelength noise is difficult to cover due to the limited range of possible lengths for the silencing cavity. However, in this embodiment, the first silencing section 212 is located between the outer peripheral wall of the liquid reservoir 200 and the inner wall of the housing 100. Therefore, the length selection range of the first silencing section 212 is not affected by the overall length of the liquid reservoir, and the selectable length of the first silencing section 212 is expanded to include the entire length of the liquid reservoir 200. Thus, the first silencing section 212 in this embodiment is applicable to a wider range of noise levels and has a better noise reduction effect.

[0045] For example, the wavelengths of the main noise waves may differ for liquid receivers of different models or sizes. Therefore, the maximum length L1 of the first silencing section 212 along the length of the liquid receiver may vary for different models or sizes. Similarly, for liquid receivers using different media, such as those using different refrigerants, the wavelengths of the main noise waves may also differ. Based on this, this embodiment defines the relationship between the maximum length L1 of the first silencing section 212 and the wavelength λ and velocity n of the sound. By adjusting the maximum length L1, silencing can be adapted to liquid receivers of different models, sizes, and media. Furthermore, when a liquid receiver has two or three main noise waves with different wavelengths, the noise can be reduced by setting multiple first silencing sections 212 of different lengths.

[0046] In an embodiment of the present invention, the maximum cross-sectional area of ​​the first noise-reducing section 212 is greater than the maximum cross-sectional area of ​​the first airflow section 211. If the maximum cross-sectional area of ​​the first airflow section 211 is S1, the maximum cross-sectional area of ​​the first noise-reducing section 212 is S2, and the noise reduction amount of the first noise-reducing section 212 is TL1 (in decibels dB), then the relationship between the noise reduction amount TL1 and the maximum cross-sectional areas S1 and S2 satisfies:

[0047]

[0048] According to the above formula, the larger the ratio of S2 to S1, the larger TL1 will be, and the better the noise reduction effect of the first noise reduction section 212; the smaller the ratio of S2 to S1, the smaller TL1 will be, and the worse the noise reduction effect of the first noise reduction section 212 will be. Therefore, in order to improve the noise reduction effect of the first noise reduction section 212, it is necessary to increase the ratio of S2 to S1; and S2 must be greater than S1 to ensure that the noise reduction amount TL1 is a positive value. Generally speaking, S1 and S2 should satisfy the following relationship: S2 ≥ 1.1 * S1. That is, the maximum cross-sectional area of ​​the first noise reduction section 212 should not be less than 1.1 times the maximum cross-sectional area of ​​the first airflow section 211 in order to achieve a good noise reduction effect.

[0049] The ratio of S2 to S1 can be increased by decreasing S1 or increasing S2, that is, by decreasing the maximum cross-sectional area of ​​the first airflow section 211 or increasing the maximum cross-sectional area of ​​the first silencer section 212. Generally, the maximum cross-sectional area of ​​the first airflow section 211 should not be too small to avoid affecting the unit flow rate of the airflow. Therefore, increasing the maximum cross-sectional area of ​​the first silencer section 212 becomes a more reliable method. Based on this, in some embodiments of the present invention, as a specific way to increase the maximum cross-sectional area of ​​the first silencer section 212, refer to... Figure 1 , Figure 5 As shown, the outer peripheral wall of the liquid storage cup 200 is provided with a first recess 201, which communicates with the first airflow channel 210. A first noise reduction section 212 is formed between the first recess 201 and the inner wall of the housing 100. Specifically, the first recess 201 is located in the middle of the liquid storage cup 200.

[0050] It should be noted that in some other embodiments, the inner wall of the housing 100 may have a second recess, and the second recess and the outer peripheral wall of the liquid reservoir 200 may form a first silencing section 212. That is, the cross-sectional dimensions of the liquid reservoir 200 remain consistent along its length, while the outer diameter of the housing 100 changes along its length, with the outer diameter at the middle of the housing 100 increasing to form the first silencing section 212, achieving the same silencing effect. However, it should be understood that since the liquid reservoir itself contains refrigerant and has a high pressure, the housing 100 needs to withstand a large pressure. If the second recess is provided on the inner wall of the housing 100 to form the first silencing section 212, the outer diameter of a portion of the housing 100 is increased, and the second recess needs to be thickened to ensure the pressure-bearing capacity of the housing 100, thus increasing the manufacturing cost of the housing 100. At the same time, increasing the outer diameter of a portion of the housing 100 also leads to an increase in the volume of the liquid reservoir, thus occupying more space, which is not conducive to its arrangement in refrigeration equipment such as air conditioners. Therefore, compared to forming the first noise-absorbing section 212 by providing a second recess on the inner wall of the housing 100, it is a more economical and practical way to form the first noise-absorbing section 212 by manufacturing a first recess 201 on the liquid storage cup 200.

[0051] It is understandable that when a stronger noise reduction effect is required, the aforementioned embodiments can be combined to further expand the cross-section of the first noise reduction section 212. Specifically, a first recess 201 is provided on the outer peripheral surface of the liquid storage cup 200, and a second recess is provided on the inner wall of the shell 100 corresponding to the position of the first recess 201. In this way, a first noise reduction section 212 with a larger maximum cross-sectional area is formed between the first recess 201 and the second recess.

[0052] As can be seen from the foregoing, since the noise reduction TL1 of the first noise reduction section 212 is only related to the maximum cross-sectional area S1 of the first airflow section 211 and the maximum cross-sectional area S2 of the first noise reduction section 212, the shape of the cross-section of the first noise reduction section 212 does not need to be limited. In the embodiment of the present invention, the cross-sectional shape of the first noise reduction section 212 is based on the cross-sectional shape of the first airflow section 211, with the area of ​​a first recess 201 added, referring to... Figure 5 As shown, in this embodiment, the cross-sectional shape of the first recess 201 on one side is semi-circular. It can be formed by stamping inward from the outer wall of the liquid storage cup 200 using a mold with a circular end. This process is convenient and cost-effective, and the arc-shaped structure also provides better pressure resistance. In other embodiments, the cross-sectional shape of the first recess 201 on one side can also be rectangular, fan-shaped, or irregular.

[0053] In embodiments of the present invention, reference is made to Figure 1As shown, the liquid reservoir has only one first silencing section 212. As can be seen from the above, multiple first silencing sections 212 can also be provided, such as two or three, to improve the silencing effect. Multiple first silencing sections 212 are spaced apart along the length of the liquid reservoir 200, and the multiple first silencing sections 212 can be set with different maximum cross-sectional areas and / or different lengths. It is understandable that, for ease of processing, the maximum cross-sectional area and length of the multiple first silencing sections 212 are usually set to be the same.

[0054] In an embodiment of the present invention, a second airflow channel 220 is formed between the end face of the liquid storage cup 200 facing the air outlet and the inner wall of the housing 100. The second airflow channel 220 includes a second silencing section 221 that extends to and communicates with the first airflow channel 210.

[0055] In one embodiment of the present invention, the first airflow channel 210 further includes a second airflow section 213, which is disposed between the first silencer section 212 and the second silencer section 221. That is, the first silencer section 212 is disposed between the first airflow section 211 and the second airflow section 213, and the second airflow section 213 extends to and communicates with the second silencer section 221. The gaseous refrigerant entering the liquid receiver from the inlet pipe 110 passes sequentially through the first airflow section 211, the first silencer section 212, the second airflow section 213, and the second silencer section 221 before entering the outlet pipe 120 and then the compressor. The maximum cross-sectional area of ​​the second silencer section 221 is greater than the maximum cross-sectional area of ​​the second airflow section 213.

[0056] In the embodiments of the present invention, if the maximum cross-sectional area of ​​the second airflow section 213 is S3, the maximum cross-sectional area of ​​the second noise-reducing section 221 is S4, and the noise reduction of the second noise-reducing section 221 is TL2 (in decibels dB), then the relationship between the noise reduction TL2 and the maximum cross-sectional areas S3 and S4 satisfies:

[0057]

[0058] According to the above formula, the larger the ratio of S4 to S3, the larger TL2, and the better the noise reduction effect of the second noise reduction section 221; the smaller the ratio of S4 to S3, the smaller TL2, and the worse the noise reduction effect of the second noise reduction section 221. To improve the noise reduction effect of the second noise reduction section 221, the ratio of S4 to S3 needs to be increased; and S4 must be greater than S3 to ensure that the noise reduction amount TL2 is positive. Generally, S4 and S3 should satisfy the following relationship: S4 ≥ 1.1 * S3. That is, the maximum cross-sectional area of ​​the second noise reduction section 221 should not be less than 1.1 times the maximum cross-sectional area of ​​the second airflow section 213 to achieve a good noise reduction effect. As described above, the second noise reduction section 221 is formed in the second airflow channel 220. If the maximum cross-sectional area of ​​the shell 100 where the second noise reduction section 221 is located is S5, then S5 = S4; the cross-sectional area of ​​the second noise reduction section 221 is as follows... Figure 6 As shown; therefore, the maximum cross-sectional area of ​​the second silencing section 221 should be much greater than 1.1 times the maximum cross-sectional area of ​​the second airflow section 213.

[0059] Increasing the ratio of S4 to S3 can be achieved by either decreasing S3 or increasing S4, i.e., decreasing the maximum cross-sectional area of ​​the second airflow section 213 or increasing the maximum cross-sectional area of ​​the second silencer section 221. Generally, the maximum cross-sectional area of ​​the second airflow section 213 should not be too small to avoid affecting the unit flow rate of the airflow. Therefore, increasing the maximum cross-sectional area of ​​the second silencer section 221 becomes a more reliable method. Based on this, the inner diameter of the shell 100 at the location of the second silencer section 221 can be appropriately increased, i.e., the maximum cross-sectional area of ​​the second silencer section 221 can be increased; see details below. Figure 7 As shown in the description above, increasing the inner diameter of a portion of the housing 100 requires increasing the thickness to ensure the pressure-bearing capacity of the housing 100. However, since the second silencing section 221 is located at the end of the liquid reservoir and has a larger maximum cross-sectional area, the gas pressure drop from the second airflow section 213 into the second silencing section 221 is greater. Therefore, compared to setting a second recess in the middle of the housing 100 and a radial protrusion at the end of the housing 100, the increase in manufacturing cost is limited. Thus, compared to the gain in silencing effect obtained by increasing the maximum cross-sectional area of ​​the second silencing section 221, the increased manufacturing cost is within an acceptable range.

[0060] In this embodiment, since the noise reduction TL2 of the second noise-reducing section 221 is only related to the maximum cross-sectional area S3 of the second airflow section 213 and the maximum cross-sectional area S4 of the second noise-reducing section 221, the shape of the cross-section of the second noise-reducing section 221 does not need to be limited. In this embodiment, the cross-section of the second noise-reducing section 221 is circular. However, the cross-section of the second noise-reducing section 221 can also be set to an elliptical, rectangular, or other structure to suit different scenarios, such as reducing space occupation. Generally, the shape of the second noise-reducing section 221 in this embodiment has lower processing costs and is the most common approach.

[0061] In an embodiment of the present invention, reference is made to Figure 1 As shown, if the maximum length of the second silencing section 221 along the length of the reservoir is L2, then L2 is also constructed as: L2 = λ / 4n; where λ is the wavelength of the sound wave and n is the speed of sound. Within the reservoir, the speed of sound is essentially constant. Therefore, the maximum length L2 of the second silencing section 221 along the length of the reservoir can correspond to sound waves of different wavelengths. The larger the value of L2, the longer the wavelength of the noise; the smaller the value of L2, the shorter the wavelength of the noise. However, limited by the overall length of the reservoir, and to avoid affecting the storage volume of the reservoir cup 200, the value of L2 is generally relatively small. That is, the second silencing section 221 is mainly used to reduce noise with shorter wavelengths. However, by combining the first silencing section 212 and the second silencing section 221, the maximum length of the first silencing section 212 can be increased to reduce noise with longer wavelengths. Thus, the reservoir in this embodiment can simultaneously reduce both noise with longer and shorter wavelengths.

[0062] It is conceivable that the wavelengths of the main noise waves may differ for liquid receivers of different models or sizes. Therefore, the maximum length L2 of the second silencing section 221 along the length of the liquid receiver may also differ for different models or sizes of liquid receivers. Similarly, for liquid receivers using different media, such as those using different refrigerants, the wavelengths of the main noise waves may also differ. Based on this, this embodiment defines the relationship between the maximum length L2 of the second silencing section 221 and the wavelength λ and velocity n of the sound wave. By adjusting the maximum length L2, the silencing of liquid receivers of different models, sizes, and media can be adapted.

[0063] In an embodiment of the present invention, the first silencing section 212 is disposed in the middle of the liquid reservoir, but the lengths of the first airflow section 211 and the second airflow section 213 along the length direction of the liquid reservoir are not limited; that is, the length of the first airflow section 211 can be greater than the length of the second airflow section 213, or the length of the first airflow section 211 can be less than or equal to the length of the second airflow section 213, which has basically no impact on the silencing effect of the first silencing section 212 and the second silencing section 221.

[0064] In an embodiment of the present invention, if the maximum cross-sectional area of ​​the first noise-absorbing section 212 is S2 and the maximum cross-sectional area of ​​the second airflow section 213 is S3, then S2 > S3. The larger maximum cross-sectional area of ​​the first noise-absorbing section 212 compared to the second airflow section 213 results in a better noise reduction effect.

[0065] If S2 is less than S3, and the maximum cross-sectional area of ​​the first airflow section 211 is S1 and the maximum cross-sectional area of ​​the second silencing section 221 is S4, then S1 < S2 < S3 < S4. In this case, the second airflow section also has a silencing effect, but the silencing effect is worse. It can be applied to situations where the noise of the liquid reservoir is composed of sound waves of various wavelengths.

[0066] If S2 equals S3, then the second airflow section 213 is equivalent to becoming the first silencer section 212, or the second airflow section 213 is eliminated, thus forming another embodiment of the present invention. In another embodiment of the present invention, the first silencer section 212 extends to and communicates with the second silencer section 221, and the maximum cross-sectional area of ​​the second silencer section 221 is greater than the maximum cross-sectional area of ​​the first silencer section. The first silencer section 212 and the second silencer section 221 are directly connected. The gaseous refrigerant entering the liquid receiver from the inlet pipe 110 passes sequentially through the first airflow section 211, the first silencer section 212, and the second silencer section 221 before entering the outlet pipe 120, and then into the compressor. The first silencer section 212 in this scheme is longer, which can be used to reduce noise with longer wavelengths, and can be applied to situations where the noise wavelength of some liquid receivers is longer.

[0067] Generally, the maximum cross-sectional area of ​​the first silencing section 212 is greater than the maximum cross-sectional area of ​​the first airflow section 211 and the maximum cross-sectional area of ​​the second airflow section 213, and the maximum cross-sectional area of ​​the second silencing section 221 is greater than the maximum cross-sectional area of ​​the first airflow section 211 and the maximum cross-sectional area of ​​the second airflow section 213. Specifically, in some embodiments, the cross-sections of the first airflow section 211 and the second airflow section 213 can be referenced. Figure 4 The first airflow section 211 and the second airflow section 213 are shown to have the same shape and area. However, in other embodiments, the cross-sectional shape and maximum cross-sectional area of ​​the first airflow section 211 and the second airflow section 213 may be different. The cross-section of the first silencing section 212 is shown in the figure. Figure 5 As shown, the cross-section of the second silencing section 221 is referenced. Figure 6 As shown, it can be seen that the maximum cross-sectional area of ​​the first airflow section 211 and the maximum cross-sectional area of ​​the second airflow section 213 are both significantly smaller than the maximum cross-sectional area of ​​the first noise-absorbing section 212. The maximum cross-sectional area of ​​the first airflow section 211 and the maximum cross-sectional area of ​​the second airflow section 213 are also smaller than the maximum cross-sectional area of ​​the second noise-absorbing section 221.

[0068] In embodiments of the present invention, if the maximum cross-sectional area of ​​the first airflow section 211 is S1 and the maximum cross-sectional area of ​​the second airflow section 213 is S3, then S3 should not be less than S1; generally, S3 = S1. Specifically, if the maximum cross-sectional area S3 of the second airflow section 213 is set to be less than the maximum cross-sectional area S1 of the first airflow section 211, it may lead to poor gas flow, affecting the unit throughput of airflow and thus affecting the cooling effect. At the same time, since the second airflow section 213 is connected to the first silencer section 212, if the maximum cross-sectional area of ​​the second airflow section 213 is too small, the gas entering the second airflow section 213 from the first silencer section 212 may also produce a whistling sound due to the excessive change in the maximum cross-sectional area, which is detrimental to the silencing of the liquid reservoir. Correspondingly, if the maximum cross-sectional area S3 of the second airflow section 213 is set too large, it will cause the ratio of S4 to S3 to become smaller, which will lead to a smaller value of TL2, that is, a worse silencing effect of the second silencer section 221. Therefore, the maximum cross-sectional area S1 of the first airflow section 211 and the maximum cross-sectional area S3 of the second airflow section 213 are generally set to be equal. This design can achieve good noise reduction effect and reduce production costs.

[0069] In some embodiments of the present invention, reference is made to... Figure 1 , Figure 4 As shown, there are two first airflow channels 210, and the two first airflow channels 210 are symmetrically arranged. The purpose of providing two first airflow channels 210 is to increase the flow area of ​​the gaseous refrigerant, thereby ensuring the normal operation of the compressor.

[0070] It is conceivable that the first airflow channel 210 may be provided in one, three, four, or other ways, and the cross-sectional shape of the first airflow channel 210 may also be varied. For example, the cross-sectional shape of the first airflow section 211 may be rectangular, trapezoidal, crescent-shaped, annular, or other shapes; the cross-sectional shapes of the first airflow section 211 and the second airflow section 213 may be the same or different.

[0071] Reference Figures 1 to 7 Another embodiment of the compressor of the present invention includes the liquid receiver described above. Since the compressor includes the liquid receiver described above, it has at least all the beneficial effects of the liquid receiver, which will not be elaborated here.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A liquid reservoir, characterized in that, include: The casing has an air inlet and an air outlet at each end; A liquid storage cup is installed inside the housing, and a first airflow channel is formed between the outer peripheral wall of the liquid storage cup and the inner wall of the housing; Along the direction from the air inlet to the air outlet, the first airflow channel includes a first airflow section and a first silencer section arranged sequentially, wherein the maximum cross-sectional area of ​​the first silencer section is greater than the maximum cross-sectional area of ​​the first airflow section; A second airflow channel is formed between the end face of the liquid storage cup facing the air outlet and the inner wall of the housing. The second airflow channel includes a second noise reduction section that extends to and communicates with the first airflow channel. The first airflow channel further includes a second airflow section, which is located between the first silencing section and the second silencing section. The second airflow section extends to the second silencing section and communicates with the second silencing section. The maximum cross-sectional area of ​​the second silencing section is greater than the maximum cross-sectional area of ​​the second airflow section. The maximum cross-sectional area of ​​the first airflow section is S1, and the maximum cross-sectional area of ​​the second airflow section is S3, wherein S3 ≥ S1.

2. The liquid reservoir according to claim 1, characterized in that: The outer peripheral wall of the liquid storage cup is provided with a first recess, which is connected to the first airflow channel; the first recess and the inner wall of the shell form the first sound-absorbing section.

3. The liquid reservoir according to claim 1, characterized in that: The inner wall of the housing has a second recess, and the second recess forms the first noise-absorbing section between the outer peripheral wall of the liquid storage cup.

4. The liquid reservoir according to claim 1, characterized in that: The maximum cross-sectional area of ​​the first airflow section is S1, and the maximum cross-sectional area of ​​the first noise reduction section is S2, wherein S2 ≥ 1.1 * S1.

5. The liquid reservoir according to claim 1, characterized in that: The maximum cross-sectional area of ​​the second airflow section is S3, and the maximum cross-sectional area of ​​the second noise reduction section is S4, wherein S4 ≥ 1.1 * S3.

6. The liquid reservoir according to claim 1, characterized in that: The maximum cross-sectional area of ​​the first silencing section is S2, and the maximum cross-sectional area of ​​the second airflow section is S3, wherein S2 > S3.

7. A compressor, characterized in that: Includes the reservoir as described in any one of claims 1 to 6.

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