Silencing assembly for refrigeration equipment and refrigeration equipment

Abstract

The utility model relates to the technical field of refrigeration equipment, in particular to a noise elimination assembly for refrigeration equipment and the refrigeration equipment, and aims to solve the problems that an air supply pipe between an economizer and a compressor of existing refrigeration equipment is large in vibration and prone to generating large noise. In order to achieve the purpose, the silencing assembly for the refrigeration equipment comprises a silencing tank, an air inlet pipe, a first air outlet pipe and a second air outlet pipe, the refrigeration equipment comprises a compressor and an economizer, one end of the air inlet pipe, one end of the first air outlet pipe and one end of the second air outlet pipe stretch into the silencing tank, and the other end of the air inlet pipe is connected with the economizer; the other ends of the first air outlet pipe and the second air outlet pipe are connected with the compressor. The arrangement of the silencing tank can reduce the pressure pulsation of the refrigerant under the condition that the compressor operates, so that the vibration and noise of the pipeline are reduced.

Description

Technical Field

[0001] This application relates to the technical field of refrigeration equipment, and specifically provides a noise elimination component for refrigeration equipment and a refrigeration equipment. Background Art

[0002] The refrigeration equipment includes an economizer and a compressor. Among them, the economizer and the compressor can be connected through pipelines such as a make-up air pipe and an exhaust pipe. The pipeline vibration of the make-up air pipe is more obvious than that of the exhaust pipe. The vibration at the connection of the make-up air pipe to the compressor is the largest, with a very high vibration speed and a high noise risk. Summary of the Invention

[0003] This application aims to solve the above technical problems, that is, to solve the problem that the vibration of the make-up air pipe between the economizer and the compressor of the existing refrigeration equipment is large and it is easy to generate relatively large noise.

[0004] This application provides a noise elimination component for refrigeration equipment. The refrigeration equipment includes a compressor and an economizer. The noise elimination component includes a noise elimination tank, an inlet pipe, a first outlet pipe, and a second outlet pipe. One ends of the inlet pipe, the first outlet pipe, and the second outlet pipe all extend into the noise elimination tank. The other end of the inlet pipe is connected to the economizer, and the other ends of the first outlet pipe and the second outlet pipe are both connected to the compressor.

[0005] In the optional technical solution of the above noise elimination component for refrigeration equipment, the length of the first outlet pipe between the noise elimination tank and the compressor is L1, and the length of the second outlet pipe between the noise elimination tank and the compressor is L2. L1 - L2 = (2n – 1)λ / 2, where λ = c / f, n is an integer, λ is the noise elimination wavelength, f is the noise elimination frequency, and c is the speed of sound.

[0006] In the optional technical solution of the above noise elimination component for refrigeration equipment, the noise elimination frequency is one or more of 250 Hz and 500 Hz.

[0007] In the optional technical solution of the above noise elimination component for refrigeration equipment, the noise elimination tank is set as a cylinder, and the diameter of the noise elimination tank is larger than the diameter of any one of the inlet pipe, the first outlet pipe, and the second outlet pipe.

[0008] In the optional technical solution of the above noise elimination component for refrigeration equipment, the end of the inlet pipe extending into the noise elimination tank is coaxial with the noise elimination tank, the end of the first outlet pipe extending into the noise elimination tank is coaxial with the noise elimination tank, and the second outlet pipe extends into the noise elimination tank from the side wall of the noise elimination tank.

[0009] In the optional technical solution of the noise elimination component for the refrigeration device described above, the length of the first air outlet pipe extending into the noise elimination tank is equal to the length of the air inlet pipe extending into the noise elimination tank.

[0010] In the optional technical solution of the noise elimination component for the refrigeration device described above, the length of the second air outlet pipe extending into the noise elimination tank is less than the radius of the noise elimination tank.

[0011] In the optional technical solution of the noise elimination component for the refrigeration device described above, the diameter of the air inlet pipe is greater than the diameter of the first air outlet pipe, and the diameter of the first air outlet pipe is greater than the diameter of the second air outlet pipe.

[0012] In the optional technical solution of the noise elimination component for the refrigeration device described above, the air inlet pipe, the first air outlet pipe, and the second air outlet pipe are all provided with annular bosses, and the annular bosses are located outside the noise elimination tank and are in contact with the noise elimination tank.

[0013] This application also provides a refrigeration device, including the noise elimination component for the refrigeration device according to any one of the above technical solutions; a compressor connected to the other ends of the first air outlet pipe and the second air outlet pipe; and an economizer connected to the other end of the air inlet pipe.

[0014] In the case of adopting the above technical solution and during the operation of the compressor, the refrigerant in the economizer first flows into the noise elimination tank through the air inlet pipe, and then flows into the compressor through the first air outlet pipe and the second air outlet pipe. Since the sides of the first air outlet pipe and the second air outlet pipe close to the compressor will bear relatively high refrigerant pressure pulsation and mechanical vibration, which will cause the first air outlet pipe and the second air outlet pipe to vibrate. Therefore, using the noise elimination tank can reduce the pressure pulsation of the refrigerant, and further reduce the pipeline vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application.

[0016] The following describes the preferred embodiments of this application with reference to the drawings. In the drawings:

[0017] Figure 1 is a schematic diagram of the noise elimination component of this application;

[0018] Figure 2 is a schematic diagram of another perspective of the noise elimination component of this application;

[0019] Figure 3 is a side view of the noise elimination component of this application;

[0020] Figure 4Yes Figure 3 A-A cross-sectional view of the sound-absorbing component in

[0021] List of reference numerals:

[0022] 1. Sound-absorbing component; 11. Sound-absorbing tank; 11a. Axis of symmetry of the sound-absorbing tank; 111. Side wall of the sound-absorbing tank; 12. Intake pipe; 13. First outlet pipe; 14. Second outlet pipe; 15. Annular boss; L1. Length of the first outlet pipe between the sound-absorbing tank and the compressor; L2. Length of the second outlet pipe between the sound-absorbing tank and the compressor; D1. Diameter of the sound-absorbing tank; D2. Diameter of the first outlet pipe; D3. Diameter of the second outlet pipe; D4. Diameter of the intake pipe; M1. Length of the first outlet pipe extending into the sound-absorbing tank; M2. Length of the second outlet pipe extending into the sound-absorbing tank; M3. Length of the intake pipe extending into the sound-absorbing tank. Detailed implementation manners

[0023] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] The terms "first", "second" and similar terms used in the description and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantity limitation, but indicate that there is at least one. "Multiple" or "several" means two or more.

[0025] Unless otherwise specified, the orientation or positional relationship indicated by "length", "inner", "outer" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. "Connection" 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 or an electrical connection. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] This application provides a sound-absorbing component 1 for a refrigeration device. The refrigeration device includes a compressor (not shown in the figure) and an economizer (not shown in the figure), asFigure 1 , Figure 2 As shown in Figure 2 , the noise elimination component 1 includes a noise elimination tank 11, an intake pipe 12, a first outlet pipe 13, and a second outlet pipe 14. One ends of the intake pipe 12, the first outlet pipe 13, and the second outlet pipe 14 all extend into the noise elimination tank 11. The other end of the intake pipe 12 is connected to an economizer, and the other ends of the first outlet pipe 13 and the second outlet pipe 14 are both connected to a compressor. During the operation of the refrigeration equipment, the refrigerant in the economizer first flows into the noise elimination tank 11 through the intake pipe 12, and then flows into the compressor through the first outlet pipe 13 and the second outlet pipe 14. Since the pressure on the side of the first outlet pipe 13 and the second outlet pipe 14 close to the compressor is relatively high, they will bear relatively high refrigerant pressure pulsations and mechanical vibrations. These pressure pulsations and mechanical vibrations will be transmitted along the first outlet pipe 13 and the second outlet pipe 14 towards the economizer, thereby causing the first outlet pipe 13 and the second outlet pipe 14 to vibrate. The setting of the noise elimination tank 11 can reduce the pressure pulsation of the refrigerant when the compressor is running, and thus reduce the pipeline vibration and noise.

[0028] In one embodiment, as Figure 1 shown in Figure 1 , the length of the first outlet pipe 13 between the noise elimination tank 11 and the compressor is L1, and the length of the second outlet pipe 14 between the noise elimination tank 11 and the compressor is L2, where L1 - L2 = (2n – 1)λ / 2, λ = c / f. Here, n is an integer, λ is the noise elimination wavelength, f is the noise elimination frequency, and c is the speed of sound. When the distance between L1 and L2 satisfies the above formula, the path difference between the airflows in the first outlet pipe 13 and the second outlet pipe 14 satisfies destructive interference, thereby further achieving the noise reduction effect.

[0029] In one embodiment, the noise elimination frequency is one or more of 250 Hz and 500 Hz. Since the compressor is mainly a fixed-frequency compressor with a frequency of 50 Hz, the compressor is prone to generating harmonics during operation. Among them, the 5th harmonic (frequency of 250 Hz) and the 10th harmonic (frequency of 500 Hz) are more likely to generate relatively large noises. Therefore, the noise elimination component 1 of the present application is mainly used to reduce the noises generated by the 5th harmonic and the 10th harmonic, thereby reducing the overall noise during the operation of the compressor. The noise elimination component 1 mainly plays a role in noise reduction through the noise elimination tank 11.

[0030] The pipeline vibrations of the first outlet pipe 13 and the second outlet pipe 14 are mainly generated and dominated by the 10th harmonic (frequency of 500 Hz). Therefore, the following is a comparison of the pipeline surface vibration velocity and pipeline radiated noise of the first outlet pipe 13 and the second outlet pipe 14 under the action of the 10th harmonic, before and after installing the noise elimination tank 11.

[0031] When the compressor speed is 2940 rpm, after installing the silencing tank 11, the vibration speed of the first outlet pipe 13 and the second outlet pipe 14 caused by the 10th harmonic is reduced by 6.9 dB compared with that before installing the silencing tank 11. When the compressor speed is 3000 rpm, after installing the silencing tank 11, the vibration speed of the first outlet pipe 13 and the second outlet pipe 14 caused by the 10th harmonic is reduced by 4.5 dB compared with that before installing the silencing tank 11.

[0032] In addition, when the compressor speed is in the range of 2880 - 3000 rpm, the highest sound power level of the first outlet pipe 13 and the second outlet pipe 14 before installing the silencing tank 11 is 110.5 dB(A), and the highest sound power level after installing the silencing tank 11 is 107.0 dB(A), with a decrease of 3.5 dB. Therefore, there is an obvious noise reduction effect after installing the silencing tank 11.

[0033] In one embodiment, as Figure 2 、 Figure 3 、 Figure 4 shown, the silencing tank 11 is set as a cylinder, and the diameter D1 of the silencing tank 11 is larger than the diameter of any one of the inlet pipe 12, the first outlet pipe 13 and the second outlet pipe 14. The larger the diameter D1 of the silencing tank 11, the better the effect of reducing the pressure pulsation of the refrigerant during the operation of the compressor, and thus the better the effect of reducing the pipeline vibration and noise. Generally, in the case of meeting the noise reduction effect of the silencing tank 11, in order to reduce the occupied space of the silencing tank 11 in the unit, the diameter D1 of the cylindrical silencing tank 11 can be set to twice the diameter D4 of the inlet pipe 12.

[0034] In one embodiment, as Figure 4 shown, the inlet pipe 12 extends into one end of the silencing tank 11 and is coaxial with the silencing tank 11, the first outlet pipe 13 extends into the other end of the silencing tank 11 and is coaxial with the silencing tank 11, and the second outlet pipe 14 extends into the silencing tank 11 from the side wall 111 of the silencing tank 11. Figure 4 It can be seen from

[0035] In one embodiment, as Figure 4As shown, the length M1 of the first air outlet pipe 13 extending into the silencing tank 11 is equal to the length M3 of the air inlet pipe 12 extending into the silencing tank 11. Since the first air outlet pipe 13 and the air inlet pipe 12 are arranged at both ends of the silencing tank 11, the equality of the length M1 of the first air outlet pipe 13 extending into the silencing tank 11 and the length M3 of the air inlet pipe 12 extending into the silencing tank 11 is beneficial to the stability of placing the silencing tank 11 in the unit, and is also beneficial to the transfer of the refrigerant in the silencing component 1.

[0036] In one embodiment, as Figure 4 shown, the length M2 of the second air outlet pipe 14 extending into the silencing tank 11 is less than the radius of the silencing tank 11. Since the second air outlet pipe 14 extends into the silencing tank 11 from the side wall 111 of the silencing tank 11, setting the length M2 of the second air outlet pipe 14 extending into the silencing tank 11 to be less than the radius of the silencing tank 11 can prevent the second air outlet pipe 14 from blocking the flow of the refrigerant when the air inlet pipe 12 conveys the refrigerant into the silencing tank 11, thereby avoiding affecting the outflow of the refrigerant from the silencing tank 11. In addition, setting the second air outlet pipe 14 at the middle position of the side wall 111 of the silencing tank 11 is also beneficial to the stability of setting the silencing tank 11 in the unit.

[0037] In one embodiment, as Figure 4 shown, the diameter D4 of the air inlet pipe 12 is greater than the diameter D2 of the first air outlet pipe 13, and the diameter D2 of the first air outlet pipe 13 is greater than the diameter D3 of the second air outlet pipe 14. Since one air inlet pipe 12 and two air outlet pipes, namely the first air outlet pipe 13 and the second air outlet pipe 14, are provided, in order to ensure the smoothness of the refrigerant flow, the diameter D4 of the air inlet pipe 12 is set to be greater than the diameter D2 of the first air outlet pipe 13. And because the first air outlet pipe 13 and the air inlet pipe 12 are arranged opposite to each other and the extending part of the first air outlet pipe 13 extending into the silencing tank 11 is coaxial with the silencing tank 11, therefore, the refrigerant flowing into the silencing tank 11 from the air inlet pipe 12 can smoothly flow into the first air outlet pipe 13. Since the second air outlet pipe 14 is arranged on the side wall 111 of the silencing tank 11, the refrigerant flowing into the silencing tank 11 from the air inlet pipe 12 is more likely to flow to the first air outlet pipe 13 than to the second air outlet pipe 14. Therefore, the diameter D2 of the first air outlet pipe 13 can be set to be greater than the diameter D3 of the second air outlet pipe 14, so as to ensure that the refrigerant in the silencing tank 11 flows smoothly and orderly into the compressor through the first air outlet pipe 13 and the second air outlet pipe 14.

[0038] In one embodiment, as Figure 4As shown in the figure, since the intake pipe 12, the first outlet pipe 13 and the second outlet pipe 14 need to be closely connected to the silencing tank 11 to avoid refrigerant leakage, annular bosses 15 can be provided at the connection positions of the intake pipe 12, the first outlet pipe 13 and the second outlet pipe 14 with the silencing tank 11. The annular bosses 15 are located outside the silencing tank 11 and are in contact with the silencing tank 11.

[0039] In addition, the present application also provides a refrigeration device. The refrigeration device has the silencing component 1 for a refrigeration device described in any one of the above embodiments, and further includes a compressor and an economizer. One ends of the intake pipe 12, the first outlet pipe 13 and the second outlet pipe 14 all extend into the silencing tank 11. The compressor is connected to the other ends of the first outlet pipe 13 and the second outlet pipe 14, and the economizer is connected to the other end of the intake pipe 12. Among them, the refrigeration device is mainly an air conditioner.

[0040] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A muffler assembly for refrigeration equipment, characterized in that: The refrigeration equipment includes a compressor and an economizer, and the silencer assembly includes a silencer tank, an air inlet pipe, a first air outlet pipe, and a second air outlet pipe. One ends of the air inlet pipe, the first air outlet pipe, and the second air outlet pipe extend into the silencer tank, and the other ends of the air inlet pipe are connected to the economizer, and the other ends of the first air outlet pipe and the second air outlet pipe are connected to the compressor.

2. The muffler assembly for refrigeration equipment according to claim 1, characterized in that: The length of the first air outlet pipe between the muffler tank and the compressor is L1, and the length of the second air outlet pipe between the muffler tank and the compressor is L2, L1-L2=(2n-1)λ / 2, λ=c / f, Where n is an integer, λ is the anechoic wavelength, f is the anechoic frequency, and c is the speed of sound.

3. The muffler assembly according to claim 2, characterized in that: The silencing frequency is one or more of 250 Hz and 500 Hz.

4. The muffler assembly for refrigeration equipment according to claim 1, characterized in that: The muffler is configured as a cylinder, and a diameter of the muffler is greater than a diameter of any one of the air inlet pipe, the first air outlet pipe, and the second air outlet pipe.

5. The muffler assembly for refrigeration equipment according to claim 4, characterized in that: The air inlet pipe extends into one end of the muffler and is coaxial with the muffler, the first air outlet pipe extends into the other end of the muffler and is coaxial with the muffler, and the second air outlet pipe extends from the side wall of the muffler into the muffler.

6. The muffler assembly for refrigeration equipment according to claim 5, characterized in that: The length of the first air outlet pipe extending into the muffler tank is equal to the length of the air inlet pipe extending into the muffler tank.

7. The muffler assembly for refrigeration equipment according to claim 5, characterized in that: The length of the second air outlet pipe extending into the muffler tank is less than the radius of the muffler tank.

8. The muffler assembly for refrigeration equipment according to any one of claims 5 to 7, characterized in that: The diameter of the air inlet pipe is greater than the diameter of the first air outlet pipe, and the diameter of the first air outlet pipe is greater than the diameter of the second air outlet pipe.

9. The muffler assembly for refrigeration equipment according to any one of claims 1 to 7, characterized in that: The air inlet pipe, the first air outlet pipe and the second air outlet pipe are all provided with an annular boss, and the annular boss is located outside the muffler and abuts against the muffler.

10. A refrigeration device, characterized in that: include: The muffler assembly for refrigeration equipment according to any one of claims 1 to 9; A compressor connected to the other end of the first air outlet pipe and the second air outlet pipe; The economizer is connected to the other end of the intake pipe.

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