Silencer and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to a silencer and an air conditioner, the silencer comprises a silencing body, a silencing pipe and a connecting assembly, the silencing body is provided with a silencing cavity, one end of the silencing pipe is connected with one end of the silencing body, and at least part of one end of the silencing pipe extends into the silencing cavity; the connecting assembly comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected with the other end of the silencing pipe, the other end of the first connecting pipe is suitable for being connected with an exhaust port of the compressor so as to communicate the silencing pipe with the exhaust port of the compressor, and one end of the second connecting pipe is directly connected with the other end of the silencing body. And the other end of the second connecting pipe is suitable for being connected with an indoor side heat exchanger so as to communicate the silencing cavity with the indoor side heat exchanger, the silencer can adapt to a narrow space in a compressor cavity, and the reliability of the connecting pipes is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioners, and in particular, to a muffler and an air conditioner. Background Art

[0002] The compressor cavity space of the air conditioner is limited, resulting in tight piping space for the muffler. In the related technology, the diameter of the connecting pipe between the muffler and the exhaust port of the compressor is reduced to adapt to the narrow piping space in the compressor cavity. However, after the diameter of the connecting pipe is reduced, the static stiffness of the connecting pipe is reduced, thereby reducing the reliability of the connecting pipe. Utility Model Content

[0003] To this end, an embodiment of the present disclosure proposes a muffler that can adapt to the narrow space in the compressor cavity and improve the reliability of the connecting pipe.

[0004] The disclosed embodiment also provides an air conditioner.

[0005] The silencer of the disclosed embodiment includes: a silencer body, the silencer body having a silencer cavity; a silencer pipe, one end of the silencer pipe is connected to one end of the silencer body, and at least a portion of the one end of the silencer pipe extends into the silencer cavity; a connecting component, the connecting component includes a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected to the other end of the silencer pipe, the other end of the first connecting pipe is suitable for being connected to the exhaust port of the compressor to connect the silencer pipe and the exhaust port of the compressor, one end of the second connecting pipe is directly connected to the other end of the silencer body, and the other end of the second connecting pipe is suitable for being connected to the indoor heat exchanger to connect the silencer cavity and the indoor heat exchanger.

[0006] The silencer of the disclosed embodiment directly connects the second connecting pipe to the silencer body, eliminates the setting mode of the connecting piece, reduces the installation height of the silencer body, and leaves a larger pipe running space for the first connecting pipe. The first connecting pipe can adopt a first connecting pipe with a larger pipe diameter, thereby improving the static stiffness and reliability of the first connecting pipe.

[0007] In some embodiments, the first connecting pipe includes a pipe body and a connecting portion, one end of the pipe body is suitable for connecting to the exhaust port of the compressor, the connecting portion is connected to the other end of the muffler pipe, and the pipe diameter of the connecting portion is smaller than the pipe diameter of the pipe body.

[0008] In some embodiments, the tube body includes a first straight pipe section, a curved pipe section, and a second straight pipe section connected in sequence, the first straight pipe section and the second straight pipe section are arranged at intervals in a first direction and the extension direction of the silencer body, the first direction is orthogonal to the extension direction of the silencer body, and the pipe diameter of the first straight pipe section is the same as the pipe diameter of the second straight pipe section.

[0009] In some embodiments, the curved pipe segment includes a first arc segment, a third straight pipe segment, and a second arc segment connected in sequence, wherein one end of the first arc segment away from the third straight pipe segment is connected to the first straight pipe segment, and one end of the second arc segment away from the third straight pipe segment is connected to the second straight pipe segment, and an extension direction of the third straight pipe segment is inclined at a preset angle to the first direction, and a bending direction of the first arc segment is opposite to a bending direction of the second arc segment.

[0010] In some embodiments, the preset angle is greater than 0 degrees and less than or equal to 30 degrees; and / or the diameter of the third straight pipe section is the same as the diameter of the first straight pipe section.

[0011] In some embodiments, the first connecting pipe further includes a transition portion, one end of the transition portion is connected to the pipe body, the other end of the transition portion is connected to the connecting portion, and the pipe diameter of the transition portion gradually decreases in the direction from the pipe body toward the connecting portion.

[0012] In some embodiments, the silencer body has an inlet portion and an outlet portion arranged relatively to each other in the extension direction of the silencer body, one end of the silencer pipe extends into the silencer cavity through the inlet portion, one end of the silencer pipe is welded to the inlet portion, and the second connecting pipe extends into the outlet portion and is welded to the outlet portion.

[0013] In some embodiments, the silencer also includes a spray coating, which is at least partially coated on the outer circumferential surfaces of the silencer body, the silencer pipe and the second connecting pipe, and covers the welding points of the silencer body and the silencer pipe and the welding points at the connection between the silencer body and the second connecting pipe.

[0014] In some embodiments, the spray layer is formed by spraying after the muffler body is respectively connected to the muffler pipe and the second connecting pipe.

[0015] The air conditioner of the embodiment of the present disclosure includes a silencer according to any one of the above embodiments.

[0016] The air conditioner of the disclosed embodiment directly connects the second connecting pipe to the silencer body, eliminates the setting method of the connecting piece, reduces the installation height of the silencer body, and leaves a larger pipe running space for the first connecting pipe. The first connecting pipe can adopt a first connecting pipe with a larger pipe diameter, thereby improving the static stiffness and reliability of the first connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a muffler in the related art.

[0018] Figure 2 Schematic diagram of a silencer according to an embodiment of the present disclosure.

[0019] Figure 3 Schematic diagram of an exploded view of a silencer according to an embodiment of the present disclosure.

[0020] Figure 4 Schematic diagram of a first connecting pipe according to an embodiment of the present disclosure.

[0021] Figure 5 Schematic diagram of a spray coating according to an embodiment of the present disclosure.

[0022] Figure 6 Schematic diagram of an air conditioner according to an embodiment of the present disclosure.

[0023] Reference numerals:

[0024] air conditioner 100,

[0025] Silencer body 1, silencer cavity 11, inlet 12, outlet 13, silencer pipe 2,

[0026] Connecting assembly 3, first connecting pipe 31, pipe body 311, first straight pipe section 3111,

[0027] curved pipe section 3112, first arc section 31121, third straight pipe section 31122, second arc section 31123,

[0028] The second straight pipe section 3113, the connecting portion 312, the transition portion 313,

[0029] The second connecting pipe 32 , the spray layer 4 , and the connecting piece 5 . DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0031] The silencer of the disclosed embodiment includes a silencer body 1, a silencer pipe 2 and a connecting assembly 3. The silencer body 1 has a silencer cavity 11. One end of the silencer pipe 2 is connected to one end of the silencer body 1, and at least part of one end of the silencer pipe 2 extends into the silencer cavity 11. The connecting assembly 3 includes a first connecting pipe 31 and a second connecting pipe 32, one end of the first connecting pipe 31 is connected to the other end of the silencer pipe 2, the other end of the first connecting pipe 31 is suitable for being connected to the exhaust port of the compressor (not shown in the figure) to connect the silencer pipe 2 and the exhaust port of the compressor, one end of the second connecting pipe 32 is directly connected to the other end of the silencer body 1, and the other end of the second connecting pipe 32 is suitable for being connected to an indoor heat exchanger (not shown in the figure) to connect the silencer cavity 11 and the indoor heat exchanger.

[0032] It should be noted that a four-way valve can also be set between the exhaust port of the compressor and the first connecting pipe 31, and the exhaust port of the compressor and the first connecting pipe are connected through the four-way valve. In this embodiment, it is not limited to a direct connection between the exhaust port of the compressor and the first connecting pipe 31, as long as a connecting channel is formed between the exhaust port of the compressor and the first connecting pipe 31.

[0033] For the sake of convenience, the high-temperature and high-pressure gas discharged from the exhaust port of the compressor is called refrigerant. When the air conditioner 100 is in cooling condition, the refrigerant discharged from the exhaust port of the compressor will first flow to the outdoor heat exchanger, and the outdoor heat exchanger itself has a silencing effect. When the air conditioner 100 is in heating condition, if the refrigerant discharged from the exhaust port of the compressor directly enters the indoor heat exchanger, the sound of the pulsation transmission of the refrigerant is relatively loud and will form a lot of noise. Therefore, it is necessary to silence the refrigerant before the refrigerant discharged from the exhaust port of the compressor flows to the indoor heat exchanger, that is, the silencer in this embodiment is based on the silencer of the air conditioner 100 in heating condition.

[0034] Specifically, Figure 2 and Figure 3 As shown, the upper end of the first connecting pipe 31 is connected to the exhaust port of the compressor, the lower end of the first connecting pipe 31 is connected to the upper end of the silencer pipe 2, the lower end portion of the silencer pipe 2 extends into the silencer chamber 11, the lower end of the silencer pipe 2 is connected to the upper end of the silencer body 1, and the compressor exhaust port and the silencer chamber 11 are connected through the first connecting pipe 31 and the silencer pipe 2, so that the refrigerant discharged from the exhaust port of the compressor can enter the silencer chamber 11 through the first connecting pipe 31 and the silencer pipe 2 for silencing.

[0035] The upper end of the second connecting pipe 32 is connected to the lower end of the silencer body 1, and the lower end of the second connecting pipe 32 is connected to the indoor heat exchanger. The silencer chamber 11 and the indoor heat exchanger are connected through the second connecting pipe 32, so that the refrigerant after silenced by the silencer body 1 is directly transmitted to the indoor heat exchanger through the second connecting pipe 32.

[0036] It should be noted that if Figure 1In the related technology shown, a connecting piece 5 is also provided between the silencer body 1 and the second connecting pipe 32, that is, the upper end of the connecting piece 5 is connected to the lower end of the silencer body 1, and the lower end of the connecting piece 5 is connected to the upper end of the second connecting pipe 32, and the silencer chamber 11 and the second connecting pipe 32 are connected through the connecting piece 5.

[0037] Compared with the connection method of setting a connecting piece 5 to connect the silencer body 1 and the second connecting pipe 32 in the related art, the connection piece 5 is cancelled in the present embodiment, so that the lower end of the silencer body 1 is directly connected to the second connecting pipe 32, and the installation height of the silencer body 1 will be reduced accordingly. A larger pipe running space will be left above the silencer body 1, so that the first connecting pipe 31 in the present embodiment can use a first connecting pipe 31 with a larger diameter than the first connecting pipe 31 in the related art, that is, the diameter of the first connecting pipe 31 in the present embodiment is larger than the diameter of the first connecting pipe 31 in the related art.

[0038] It can be understood that the silencing effect of the silencer is determined by the expansion ratio of the height and diameter of the silencer body 1 and the size of the silencer pipe 2 inserted into the silencer cavity 11. In this embodiment, the cancellation of the connection member 5 will not affect the silencing effect of the silencer.

[0039] For example, the diameter of the first connecting tube 31 in this embodiment is 12 mm, and the diameter of the first connecting tube in the related art is 9 mm. The first connecting tube 31 in this embodiment and the first connecting tube in the related art are both made of copper. The vibration excitation of the four-way valve is simulated, the same constraint conditions are set, and the grid size is set to 2 mm. The first force is applied to the axial direction of the 9 mm first connecting tube and the 12 mm first connecting tube, respectively, and the second force is applied to the radial direction of the 9 mm first connecting tube and the 12 mm first connecting tube. The first force and the second force are both 50 N. The maximum deformation of the 12 mm first connecting tube is 3.0168×10 (-6) mm, the maximum deformation of the 9mm first connecting tube is 1.3375×10 (-6) The static stiffness of the 12mm first connecting tube is increased by 55.56% compared with the 9mm first connecting tube.

[0040] The disclosed embodiment directly connects the second connecting pipe 32 to the silencer body 1, eliminates the setting of the connecting piece 5, reduces the installation height of the silencer body 1, and leaves a larger pipe running space for the first connecting pipe 31. The first connecting pipe 31 can adopt a first connecting pipe 31 with a larger pipe diameter, thereby improving the static stiffness of the first connecting pipe 31 and further improving the reliability of the first connecting pipe 31.

[0041] In some embodiments, the first connecting pipe 31 includes a pipe body 311 and a connecting portion 312, one end of the pipe body 311 is suitable for connecting to the exhaust port of the compressor, and the connecting portion 312 is connected to the other end of the muffler pipe 2, and the pipe diameter of the connecting portion 312 is smaller than the pipe diameter of the pipe body 311.

[0042] Specifically, Figure 3 and Figure 4 As shown, the upper end of the tube body 311 is connected to the exhaust port of the compressor, the lower end of the tube body 311 is connected to the upper end of the connecting part 312, the lower end of the connecting part 312 is connected to the upper end of the muffler pipe 2, the tube body 311 is located above the connecting part 312, and the tube diameter of the tube body 311 is larger than the tube diameter of the connecting part 312.

[0043] In this embodiment, a first connecting pipe 31 with a large diameter is used, and the diameter of the silencer pipe 2 is the same as the diameter of the silencer pipe 2 in the related technology. By setting a connecting portion 312 with a diameter smaller than the pipe body 311, the connection between the first connecting pipe 31 and the silencer pipe 2 is facilitated.

[0044] In some embodiments, the pipe body 311 includes a first straight pipe section 3111, a curved pipe section 3112, and a second straight pipe section 3113 connected in sequence. The first straight pipe section 3111 and the second straight pipe section 3113 are connected in a first direction (eg, Figure 2 The left and right directions shown in FIG. 1 and the extending direction of the muffler body 1 (as shown in FIG. Figure 2 The first direction is orthogonal to the extension direction of the silencer body 1, and the diameter of the first straight pipe section 3111 is the same as the diameter of the second straight pipe section 3113.

[0045] Specifically, Figure 2-Figure 4 As shown, the first straight pipe section 3111 is located above the second straight pipe section 3113, and the first straight pipe section 3111 is located on the left side of the second straight pipe section 3113, the upper end of the first straight pipe section 3111 is connected to the exhaust port of the compressor, the lower end of the first straight pipe section 3111 is connected to the upper end of the curved pipe section 3112, the lower end of the curved pipe section 3112 is connected to the upper end of the second straight pipe section 3113, and the lower end of the second straight pipe section 3113 is connected to the connecting portion 312.

[0046] In this embodiment, by disposing the curved pipe section 3112, the first straight pipe section 3111 and the second straight pipe section 3113, on the one hand, the curved pipe section 3112 can reduce the sound of the refrigerant flow and reduce the noise; on the other hand, the disposition of the curved pipe section 3112 can make the muffler adapt to different installation positions, thereby facilitating the installation of the muffler.

[0047] In some embodiments, the curved pipe segment 3112 includes a first arc segment 31121, a third straight pipe segment 31122, and a second arc segment 31123 connected in sequence, the end of the first arc segment 31121 away from the third straight pipe segment 31122 is connected to the first straight pipe segment 3111, the end of the second arc segment 31123 away from the third straight pipe segment 31122 is connected to the second straight pipe segment 3113, the extension direction of the third straight pipe segment 31122 is inclined at a preset angle to the first direction, and the bending direction of the first arc segment 31121 is opposite to the bending direction of the second arc segment 31123.

[0048] Specifically, Figure 4 As shown, the upper end of the first arc segment 31121 is connected to the lower end of the first straight pipe segment 3111, the lower end of the first arc segment 31121 is connected to the left end of the third straight pipe segment 31122, the right end of the third straight pipe segment 31122 is connected to the upper end of the second arc segment 31123, and the lower end of the second arc segment 31123 is connected to the upper end of the second straight pipe segment 3113. The bending direction of the first arc segment 31121 is toward the right, and the bending direction of the second arc segment 31123 is toward the left, so that the first straight pipe segment 3111 of the first connecting pipe 31 is located above the second straight pipe segment 3113, which is convenient for the flow of refrigerant.

[0049] In some embodiments, the preset angle is greater than 0 degrees and less than or equal to 30 degrees; and / or, the diameter of the third straight pipe section 31122 is the same as the diameter of the first straight pipe section 3111.

[0050] Specifically, Figure 4 As shown, the preset angle is set to A. When the preset angle is greater than 30 degrees, the bending angle of the first connecting pipe 31 is too large, which is not conducive to the flow of the refrigerant. In this embodiment, the angle between the extension direction of the third straight pipe section 31122 and the left and right directions is limited, thereby limiting the bending angle of the first connecting pipe 31, which facilitates the flow of the refrigerant.

[0051] Optionally, if the diameter of the third straight pipe section 31122 is larger or smaller than the diameter of the first straight pipe section 3111, the change in diameter will change the flow rate of the refrigerant. By setting the diameter of the third straight pipe section 31122 to be the same as the diameter of the first straight pipe section 3111, the stability of the refrigerant flow is improved.

[0052] For example, the value of the preset angle A can be 3°, 5°, 6°, 10°, 15°, 20°, 23°, 25°, 28°, or 30°.

[0053] In some embodiments, the first connecting tube 31 also includes a transition portion 313, one end of the transition portion 313 is connected to the tube body 311, and the other end of the transition portion 313 is connected to the connecting portion 312, and the tube diameter of the transition portion 313 gradually decreases in the direction from the tube body 311 toward the connecting portion 312.

[0054] Specifically, Figure 4 As shown, the upper end of the transition portion 313 is connected to the lower end of the second straight pipe section 3113, and the lower end of the transition portion 313 is connected to the upper end of the connecting portion 312, and the pipe diameter of the transition portion 313 gradually decreases downward from top to bottom. Since the pipe diameter of the second straight pipe section 3113 is larger than the pipe diameter of the connecting portion 312, the transition portion 313 is provided to facilitate the connection between the second straight pipe section 3113 and the connecting portion 312.

[0055] In some embodiments, the silencer body 1 has an inlet portion 12 and an outlet portion 13 arranged relatively to each other in the extension direction of the silencer body 1, one end of the silencer pipe 2 extends into the silencer chamber 11 through the inlet portion 12, one end of the silencer pipe 2 is welded to the inlet portion 12, and the second connecting pipe 32 extends into the outlet portion 13 and is welded to the outlet portion 13.

[0056] Specifically, Figure 2 As shown, the upper end of the muffler body 1 is provided with an inlet 12, and the lower end of the muffler body 1 is provided with an outlet 13, the inlet 12 and the outlet 13 are symmetrically arranged in the up-down direction, and the central axis of the inlet 12 coincides with the central axis of the muffler body 1, that is, the inlet 12 is located in the middle of the upper end of the muffler body 1. The lower end of the muffler pipe 2 extends into the muffler cavity 11 through the inlet 12, and the refrigerant can enter the muffler cavity 11 through the first connecting pipe 31 and the muffler pipe 2, which facilitates the sealing of the muffler body 1 and improves the muffler effect of the muffler.

[0057] In some embodiments, the silencer also includes a spray layer 4, which is at least partially coated on the outer circumferential surfaces of the silencer body 1, the silencer pipe 2 and the second connecting pipe 32, and covers the welding points of the silencer body 1 and the silencer pipe 2 and the welding points at the connection between the silencer body 1 and the second connecting pipe 32.

[0058] like Figure 5 As shown, the silencer body 1 and the silencer pipe 2 are made of carbon steel. By providing a spray layer 4 on the outer surface of the silencer, the anti-rust performance of the silencer is improved.

[0059] In some embodiments, the spray layer 4 is formed by spraying after the muffler body 1 is connected to the muffler pipe 2 and the second connecting pipe 32 respectively.

[0060] When assembling the silencer of the disclosed embodiment, firstly, the lower end of the silencer pipe 2 is extended into the silencer chamber 11 through the inlet portion 12, the silencer pipe 2 is welded to the inlet portion 12, and the second connecting pipe 32 is extended into the outlet portion 13 and welded to the outlet portion 13, then the silencer body 1, the silencer pipe 2 and the second connecting pipe 32 are sprayed to form the spray layer 4, and then the lower end of the first connecting pipe 31 is welded to the upper end of the silencer pipe 2 to complete the assembly of the silencer, and finally the silencer is installed on the air conditioner 100.

[0061] It is understandable that, when spraying, only the upper end portion of the second connecting pipe 32 may be sprayed, as long as the welding point between the second connecting pipe 32 and the outlet portion 13 can be covered.

[0062] The air conditioner 100 according to the embodiment of the present disclosure includes a silencer using any one of the above embodiments.

[0063] Specifically, Figure 6 As shown, the air conditioner 100 of the embodiment of the present disclosure includes the silencer of the above-mentioned embodiment, by directly connecting the second connecting pipe 32 to the silencer body 1, the setting mode of the connecting piece 5 is eliminated, the installation height of the silencer body 1 is reduced, and a larger pipe running space is reserved for the first connecting pipe 31. The first connecting pipe 31 can adopt a first connecting pipe 31 with a larger pipe diameter, thereby improving the static stiffness and reliability of the first connecting pipe 31, and further improving the performance of the air conditioner 100.

[0064] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0067] In the present disclosure, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0069] It is understandable that the above embodiments are exemplary and cannot be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present disclosure.

Claims

1. A muffler, characterized in that: include: A silencer body, wherein the silencer body has a silencer cavity; A silencer pipe, one end of which is connected to one end of the silencer body, and at least a portion of the one end of the silencer pipe extends into the silencer cavity; A connecting assembly, the connecting assembly includes a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected to the other end of the silencer pipe, the other end of the first connecting pipe is suitable for being connected to the exhaust port of the compressor to connect the silencer pipe and the exhaust port of the compressor, one end of the second connecting pipe is directly connected to the other end of the silencer body, the other end of the second connecting pipe is suitable for being connected to the indoor heat exchanger to connect the silencer chamber and the indoor heat exchanger.

2. The muffler according to claim 1, characterized in that: The first connecting pipe includes a pipe body and a connecting portion, one end of the pipe body is suitable for connecting to the exhaust port of the compressor, the connecting portion is connected to the other end of the muffler pipe, and the pipe diameter of the connecting portion is smaller than the pipe diameter of the pipe body.

3. The muffler according to claim 2, characterized in that: The pipe body includes a first straight pipe section, a curved pipe section, and a second straight pipe section which are connected in sequence. The first straight pipe section and the second straight pipe section are arranged at intervals in a first direction and in the extension direction of the silencer body. The first direction is orthogonal to the extension direction of the silencer body. The pipe diameter of the first straight pipe section is the same as the pipe diameter of the second straight pipe section.

4. The muffler according to claim 3, characterized in that: The curved pipe section includes a first arc section, a third straight pipe section and a second arc section connected in sequence, wherein one end of the first arc section away from the third straight pipe section is connected to the first straight pipe section, and one end of the second arc section away from the third straight pipe section is connected to the second straight pipe section, and an extension direction of the third straight pipe section is inclined at a preset angle to the first direction, and a bending direction of the first arc section is opposite to a bending direction of the second arc section.

5. The muffler according to claim 4, characterized in that: The preset angle is greater than 0 degrees and less than or equal to 30 degrees; And / or, the diameter of the third straight pipe section is the same as the diameter of the first straight pipe section.

6. The muffler according to claim 2, characterized in that: The first connecting pipe also includes a transition portion, one end of which is connected to the pipe body, and the other end of which is connected to the connecting portion, and a pipe diameter of the transition portion gradually decreases in a direction from the pipe body toward the connecting portion.

7. The silencer according to any one of claims 1 to 6, characterized in that: The silencer body has an inlet portion and an outlet portion which are arranged relatively to each other in the extension direction of the silencer body, one end of the silencer pipe extends into the silencer cavity through the inlet portion, one end of the silencer pipe is welded to the inlet portion, and the second connecting pipe extends into the outlet portion and is welded to the outlet portion.

8. The muffler according to claim 7, characterized in that: It also includes a spray layer, which is at least partially coated on the outer circumferential surfaces of the silencer body, the silencer pipe and the second connecting pipe, and covers the welding points of the silencer body and the silencer pipe and the welding points at the connection between the silencer body and the second connecting pipe.

9. The muffler according to claim 8, characterized in that: The spray layer is formed by spraying after the muffler body is respectively connected to the muffler pipe and the second connecting pipe.

10. An air conditioner, characterized in that: Comprising the silencer according to any one of claims 1-9.

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