Compressor and temperature regulating device having the same

Abstract

The application discloses a compressor and a temperature regulating device with the same. The compressor comprises a pump body assembly and a muffler. The pump body assembly comprises a cylinder and an upper bearing. The cylinder is provided with a compression chamber. The upper bearing is provided with an exhaust port communicated with the compression chamber. The muffler is sleeved on a bearing bush of the upper bearing. The muffler and the upper bearing jointly define a muffling chamber. The muffling chamber is communicated with the exhaust port. The muffler is in clearance fit with the bearing bush to form an air outlet channel communicated with the muffling chamber between the muffler and the bearing bush. According to the compressor of the embodiment of the application, the muffler is sleeved on the bearing bush of the upper bearing. The muffler is in clearance fit with the bearing bush to form the air outlet channel communicated with the muffling chamber between the muffler and the bearing bush. Therefore, the high-pressure gaseous refrigerant discharged from the exhaust port can generate vortex in the muffling chamber to reduce noise, thereby being favorable for reducing the exhaust noise of the compressor.

Description

Technical Field

[0001] This invention relates to the field of temperature control device technology, and more specifically, to a compressor and a temperature control device having the same. Background Technology

[0002] As living standards improve, users are paying more and more attention to the operating noise of air conditioners. The operating noise of air conditioners mainly comes from the compressor. During the operation of the compressor, low-pressure refrigerant enters the compressor, and the compressor can compress the refrigerant to discharge high-pressure refrigerant. The discharged high-pressure refrigerant is accompanied by gas noise. Excessive noise will make people irritable and seriously affect the user experience. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes a compressor that can reduce compressor exhaust noise.

[0004] The present invention also proposes a temperature regulating device having the above-mentioned compressor.

[0005] According to an embodiment of the present invention, a compressor includes: a pump body assembly, the pump body assembly including a cylinder and an upper bearing, the cylinder having a compression chamber, and the upper bearing having an exhaust port communicating with the compression chamber; a muffler, the muffler being sleeved on the bearing bush of the upper bearing, and the muffler and the upper bearing jointly defining a muffler cavity, the muffler cavity communicating with the exhaust port, and the muffler and the bearing bush being clearance-fitted to form an air outlet passage communicating with the muffler cavity between the muffler and the bearing bush.

[0006] According to an embodiment of the present invention, the muffler is sleeved on the bearing bush of the upper bearing. The muffler and the bearing bush are fitted with a clearance to form an exhaust passage communicating with the muffler cavity between the muffler and the bearing bush. This allows the high-pressure gaseous refrigerant discharged from the exhaust port to generate a vortex in the muffler cavity for noise reduction, thereby helping to reduce the exhaust noise of the compressor.

[0007] According to some embodiments of the present invention, one end of the muffler that is in clearance fit with the bearing bush is provided with an inner flange extending toward the cylinder, and the inner flange is in clearance fit with the bearing bush to form the air outlet channel.

[0008] Furthermore, the extension direction of the inner flange is parallel to the axial direction of the bearing bush.

[0009] Furthermore, in the axial direction of the pump body assembly, the height h of the inner flange and the height H of the muffler satisfy the following relationship: h > 1 / 3H.

[0010] Furthermore, the end of the inner flange near the upper bearing is spaced apart from the upper bearing.

[0011] According to some embodiments of the present invention, the silencing cavity is an annular cavity surrounding the bearing.

[0012] According to some embodiments of the present invention, the air outlet channel surrounds the bearing in the circumferential direction of the bearing.

[0013] Furthermore, the air outlet channel is a closed-loop channel.

[0014] Furthermore, along the circumferential direction of the bearing bush, the longitudinal cross-sectional area of ​​the air outlet channel gradually decreases from the position near the exhaust port to the direction away from the exhaust port.

[0015] According to another embodiment of the present invention, a temperature regulating device includes the compressor described above.

[0016] According to an embodiment of the present invention, the muffler of the compressor is sleeved on the bearing bush of the upper bearing. The muffler and the bearing bush are fitted with a clearance to form an exhaust channel communicating with the muffler cavity between the muffler and the bearing bush. This allows the high-pressure gaseous refrigerant discharged from the exhaust port to generate a vortex in the muffler cavity for noise reduction, thereby helping to reduce the exhaust noise of the compressor.

[0017] 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

[0018] Figure 1 This is a schematic diagram of the compressor according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Enlarged view at point A;

[0020] Figure 3 This is a perspective view of a muffler according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of a muffler according to an embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional view of a compressor according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the energy transfer loss of the anechoic cavity according to an embodiment of the present invention.

[0024] Figure label:

[0025] Pump body assembly 1, cylinder 11, upper bearing 12, exhaust port 121, bearing shell 122, lower bearing 13, crankshaft 14, roller 15, muffler 2, muffler cavity 21, exhaust passage 22, inner flange 23, compressor 10. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this invention, it should be understood that the terms "length", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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. Therefore, they should not be construed as limitations on this invention.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] The following is combined with Figures 1-6 The compressor 10 and its temperature regulation according to an embodiment of the present invention are described in detail.

[0030] Reference Figure 1 and Figure 2 As shown, the compressor 10 includes: a pump body assembly 1 and a silencer 2, wherein:

[0031] The pump body assembly 1 includes a cylinder 11 and an upper bearing 12. The cylinder 11 is provided with a compression chamber, and the upper bearing 12 is provided with an exhaust port 121 that communicates with the compression chamber. Refrigerant from outside the compressor 10 can enter the compression chamber, where it is compressed into high-pressure gas and discharged through the exhaust port 121. The compressor 10 can provide power for the circulation of refrigerant.

[0032] The muffler 2 is fitted onto the bearing shell 122 of the upper bearing 12, and the muffler 2 and the upper bearing 12 together define a muffler cavity 21. The muffler cavity 21 is connected to the exhaust port 121. The muffler 2 and the bearing shell 122 are fitted together to form an exhaust channel 22 between the muffler 2 and the bearing shell 122, which is connected to the muffler cavity 21. It can be understood that the high-pressure gaseous refrigerant discharged from the exhaust port 121 is accompanied by gas noise. The high-pressure gaseous refrigerant can only be discharged from the exhaust channel 22 after passing through the muffler cavity 21. The muffler cavity 21 can reduce noise transmission along the path of the noise. The structure cavity with abrupt cross-section is formed, which allows sound waves of certain frequencies to be reflected and interfered within the silencing cavity 21, thereby reducing the exhaust noise of the compressor 10. At the same time, since the exhaust passage 22 is formed in the gap between the muffler 2 and the bearing 122, the exhaust direction of the exhaust port 121 and the intake direction of the exhaust passage 22 are offset in the radial direction of the pump body assembly 1. This allows the refrigerant in the silencing cavity 21 to generate vortices, and the gas noise dissipates energy under the vortex, thereby further reducing the exhaust noise of the compressor 10.

[0033] According to an embodiment of the present invention, in the compressor 10, the muffler 2 is sleeved on the bearing shell 122 of the upper bearing 12. The muffler 2 and the bearing shell 122 are clearance-fitted to form an exhaust passage 22 that communicates with the muffler cavity 21 between the muffler 2 and the bearing shell 122. This allows the high-pressure gaseous refrigerant discharged from the exhaust port 121 to generate a vortex in the muffler cavity 21 for noise reduction, thereby helping to reduce the exhaust noise of the compressor 10.

[0034] In some embodiments of the present invention, the compressor 10 is a rotary compressor 10. The compressor 10 also includes a motor for driving the pump body assembly 1. The pump body assembly 1 includes: an upper bearing 12, a cylinder 11, a lower bearing 13, a crankshaft 14, and rollers 15. The upper bearing 12 is located at the upper end of the cylinder 11, the lower bearing 13 is located at the lower end of the cylinder 11, and the rollers 15 are located in the compression chamber of the cylinder 11. The crankshaft 14 rotatably passes through the bearing shell 122 of the upper bearing 12, the cylinder 11, and the lower bearing 13. The rollers 15 are sleeved on the crankshaft 14. The motor can drive the crankshaft 14 to rotate, thereby driving the rollers 15 to move in the compression chamber to compress the refrigerant.

[0035] In some embodiments of the present invention, reference is made to... Figures 1-4 As shown, the end of the muffler 2 that is in clearance fit with the bearing 122 is provided with an inner flange 23 extending toward the cylinder 11. The inner flange 23 and the bearing 122 are in clearance fit to form an exhaust passage 22. The inner flange 23 can improve the vortex effect of the high-pressure gaseous refrigerant in the muffler cavity 21, thereby helping to further improve the noise reduction of the muffler cavity 21 and reduce the exhaust noise of the compressor 10.

[0036] Reference Figure 2As shown, the high-pressure gaseous cold air discharged from the exhaust port 121 enters the silencing cavity 21 and first flows upward along the exhaust direction of the exhaust port 121. Then, under the action of the top wall of the silencing cavity 21 and the inner flange 23 facing the side wall of the silencing cavity 21, a vortex is generated, and finally it flows out through the exhaust channel 22.

[0037] In some embodiments of the present invention, the extending direction of the inner flange 23 is parallel to the axial direction of the bearing bush 122, so that the inner flange 23 facing the side wall of the anechoic cavity 21 has a better guiding effect on the high-pressure gaseous refrigerant in the anechoic cavity 21, thereby improving the vortex effect of the high-pressure gaseous refrigerant in the anechoic cavity 21. (Refer to...) Figure 2 As shown, the extension direction of the inner flange 23 is the vertical direction, and the axial direction of the bearing bush 122 is also the vertical direction.

[0038] In some embodiments of the present invention, reference is made to... Figure 2 As shown, in the axial direction of the pump body assembly 1, the height h of the inner flange 23 and the height H of the muffler 2 satisfy the following relationship: h > 1 / 3H, to ensure the effective length of the inner flange 23, so that the refrigerant in the muffler cavity 21 generates vortexes to dissipate energy in accordance with design requirements. It can be understood that if h ≤ 1 / 3H, the height h of the inner flange 23 is shorter, and the inner flange 23 does not significantly improve the noise reduction effect of the muffler 2.

[0039] In some embodiments of the present invention, the end of the inner flange 23 near the upper bearing 12 is spaced apart from the upper bearing 12, that is, the free end (lower end) of the inner flange 23 is spaced apart from the upper bearing 12, so that the air outlet channel 22 communicates with the silencer cavity 21 and prevents the inner flange 23 from interfering with the upper bearing 12.

[0040] In some embodiments of the present invention, reference is made to Figure 2 As shown, the silencing cavity 21 is an annular cavity surrounding the bearing bush 122, so as to make full use of the space of the outer ring of the bearing bush 122, increase the capacity of the silencing cavity 21, thereby increasing the expansion ratio of the high-pressure gaseous refrigerant in the flow direction and increasing the noise reduction of the silencing cavity 21.

[0041] In some embodiments of the present invention, the exhaust channel 22 surrounds the bearing 122 in the circumferential direction so that the high-pressure gaseous refrigerant in the silencer cavity 21 can be smoothly discharged from the silencer 2, thereby reducing the noise generated by the high-pressure gaseous refrigerant when it flows through the exhaust channel 22.

[0042] In some embodiments of the present invention, the exhaust channel 22 is a closed-loop channel. Optionally, the shape of the exhaust channel 22 can be an annular, elliptical, or other annular, so that the high-pressure gaseous refrigerant in the silencer cavity 21 can be smoothly discharged from the silencer 2, thereby reducing the noise generated by the high-pressure gaseous refrigerant when it flows through the exhaust channel 22.

[0043] In some embodiments of the present invention, along the circumferential direction of the bearing bush 122, the longitudinal cross-sectional area of ​​the air outlet channel 22 gradually decreases from a position near the exhaust port 121 to a position away from the exhaust port 121. That is, along the circumferential direction of the bearing bush 122, the gap between the muffler 2 and the bearing bush 122 gradually changes. (Refer to...) Figure 5 As shown, the gap between the muffler 2 and the bearing 122 is larger near the exhaust port 121 and smaller away from the exhaust port 121. The exhaust passage 22 is eccentrically positioned relative to the axis of the bearing 122. The exhaust passage 22 near the exhaust port 121 can be crescent-shaped. It can be understood that the high-pressure gaseous refrigerant flow rate is relatively faster near the exhaust port 121 and relatively slower away from the exhaust port 121. Therefore, the exhaust passage 22 has a larger flow area at the location where the high-pressure gaseous refrigerant flow rate is faster, so that the pressure of the high-pressure gaseous refrigerant is more uniform when it is discharged from the muffler 2, reducing exhaust loss and noise to a certain extent.

[0044] It should be noted that the longitudinal cross-sectional area of ​​the air outlet channel 22 is the cross-sectional area of ​​the plane containing the axis of the pump body assembly 1 relative to the air outlet channel 22.

[0045] According to the compressor 10 of the present invention, the energy transfer loss of the high-pressure gaseous refrigerant when flowing through the silencer 21 is calculated through simulation as follows: Figure 6 As shown, the horizontal axis represents the noise frequency (in Hz), and the vertical axis represents the transmission loss (in dB). The silencing cavity 21 has a significant noise suppression effect in the 1000Hz-1250Hz frequency band, which helps to improve the user experience of the compressor 10 and increase user satisfaction.

[0046] According to another embodiment of the present invention, a temperature regulating device includes the compressor 10 of the above embodiment, wherein the temperature regulating device may be an air conditioner.

[0047] According to the temperature regulating device of the present invention, the muffler 2 of the compressor 10 is sleeved on the bearing bush 122 of the upper bearing 12. The muffler 2 and the bearing bush 122 are fitted together to form an exhaust passage 22 that communicates with the muffler cavity 21 between the muffler 2 and the bearing bush 122. This allows the high-pressure gaseous refrigerant discharged from the exhaust port 121 to generate a vortex in the muffler cavity 21 for noise reduction, thereby helping to reduce the exhaust noise of the compressor 10.

[0048] 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.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A compressor, characterized in that, include: A pump body assembly, the pump body assembly including a cylinder and an upper bearing, the cylinder having a compression chamber, and the upper bearing having an exhaust port communicating with the compression chamber; A muffler is fitted onto the bearing shell of the upper bearing, and the muffler and the upper bearing together define a muffler cavity. The muffler cavity is an annular cavity surrounding the bearing shell and communicates with the exhaust port. The muffler and the bearing shell are fitted with a clearance to form an exhaust channel between the muffler and the bearing shell that communicates with the muffler cavity. The exhaust channel surrounds the bearing shell circumferentially and is a closed-loop channel. Along the circumferential direction of the bearing shell, the cross-sectional area of ​​the exhaust channel gradually decreases from a position near the exhaust port to a position away from the exhaust port. The gap between the muffler and the bearing gradually changes. The gap between the muffler and the bearing is larger near the exhaust port and smaller away from the exhaust port. The exhaust channel is eccentrically positioned relative to the axis of the bearing. The exhaust channel is crescent-shaped near the exhaust port. The high-pressure gaseous refrigerant flow velocity is relatively faster near the exhaust port and relatively slower away from the exhaust port. The exhaust channel has a larger flow area at the location where the high-pressure gaseous refrigerant flow velocity is faster, so that the pressure of the high-pressure gaseous refrigerant is more uniform when it is discharged from the muffler. The muffler has an inner flange extending toward the cylinder at one end that is in clearance fit with the bearing bush. The inner flange is in clearance fit with the bearing bush to form the air outlet channel. Wherein, the longitudinal cross-sectional area of ​​the air outlet channel is the cross-sectional area of ​​the plane containing the axis of the pump body assembly relative to the air outlet channel.

2. The compressor according to claim 1, characterized in that, The extension direction of the inner flange is parallel to the axial direction of the bearing bush.

3. The compressor according to claim 1, characterized in that, In the axial direction of the pump body assembly, the height h of the inner flange and the height H of the silencer satisfy the following relationship: h > 1 / 3H.

4. The compressor according to claim 1, characterized in that, The end of the inner flange near the upper bearing is spaced apart from the upper bearing.

5. A temperature regulating device, characterized in that, Includes the compressor according to any one of claims 1-4.

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