Silencing device, noise control method and air conditioner

Abstract

The invention discloses a silencing device, a noise control method and an air conditioner. The silencing device is applied to the air conditioner, the air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a four-way valve and a compressor, the inlet end of the silencing device is communicated with the exhaust end of the compressor, the outlet end of the silencing device is connected with the four-way valve, and the silencing device comprises at least two silencing branches. Each silencing branch is correspondingly provided with a silencer, and the connection relation between different silencers can be changed; and the controller is used for controlling the connection relationship between different silencers in the silencing device, so that the silencing parameters of the silencing device are changed, and the silencing amount of the silencing device is changed. By means of the noise reduction method and device, noise of different frequencies can be reduced, the noise between the indoor part and the outdoor part of the air conditioner meets the noise requirement, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of noise control, and in particular to a noise reduction device, a noise control method and an air conditioner. Background Art

[0002] With the development of economy, people have higher and higher requirements for the quality of life. In many installation occasions, air conditioners need to be equipped with 20m, 50m or even longer long connecting pipes, and additional refrigerant is required. The difference in the amount of additional refrigerant leads to the difference in pressure of the air conditioning system, and the individual differences of the compressor will cause the refrigerant pulsation unit to emit noise of different frequencies. It is difficult to test all noise problems in the development stage, so after the air conditioner is installed on the client, the air conditioner often produces unpleasant noise problems. In the prior art, the noise is reduced by setting a silencer. The silencer parameters of the silencer are fixed, and can only reduce the noise of a certain frequency or a certain frequency band, but the frequency of the noise is uncertain, so except for a specific frequency, the silencer effect at other frequencies is poor.

[0003] In view of the problem that the muffler parameters of the muffler device in the air conditioner in the prior art are fixed and the muffler parameters cannot be adaptively adjusted according to the noise frequency, resulting in poor muffler effect, no effective solution has been proposed so far. Summary of the invention

[0004] The embodiments of the present invention provide a silencer device, a noise control method and an air conditioner to solve the problem that the silencer parameters of the silencer device in the air conditioner in the prior art are fixed and the silencer parameters cannot be adaptively adjusted according to the noise frequency, resulting in poor silencer effect.

[0005] In order to solve the above technical problems, the present invention provides a muffler device, which is applied to an air conditioner, wherein the air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a four-way valve and a compressor, wherein the muffler device has an inlet end connected to the exhaust end of the compressor and an outlet end connected to the four-way valve, and the muffler device comprises at least two muffler branches, each of which is correspondingly provided with a muffler, and the connection relationship between different mufflers can be changed;

[0006] The controller is used to control the connection relationship between different silencers in the silencer device, thereby changing the silencer parameters of the silencer device to change the silencer volume of the silencer device.

[0007] Furthermore, the muffler branch includes:

[0008] A first valve is arranged on the inlet pipeline of the muffler branch;

[0009] A second valve is arranged on the outlet pipe of the muffler branch;

[0010] The third valve is arranged between the outlet pipeline of each muffler branch and the inlet pipeline of any other muffler branch.

[0011] Furthermore, the third valve is a one-way valve.

[0012] Furthermore, the silencer comprises:

[0013] An expansion chamber; the inlet end of which is connected to the inlet pipeline of the muffler branch, and the outlet end of which is connected to the outlet pipeline of the muffler branch;

[0014] Wherein, the cross-sectional area of ​​the expansion chamber is larger than the cross-sectional area of ​​the inlet pipeline of the muffler branch and the cross-sectional area of ​​the outlet pipeline.

[0015] Further, the noise reduction parameters include: equivalent expansion ratio and equivalent expansion chamber length;

[0016] Among them, the equivalent expansion ratio is the equivalent value of the expansion ratio of all mufflers involved in the operation; the expansion ratio is the ratio of the cross-sectional area of ​​the expansion chamber of the muffler to the cross-sectional area of ​​the inlet pipe; the equivalent expansion chamber length is the total length of all mufflers involved in the operation.

[0017] Furthermore, different silencers of the silencer device have different expansion ratios.

[0018] The present invention also provides an air conditioner, comprising the above-mentioned silencing device.

[0019] The present invention also provides a noise control method, which is applied to the above-mentioned silencing device, and the noise control method comprises:

[0020] After determining that the noise of the air conditioner does not meet the noise requirement, controlling the connection relationship between different silencers of the silencer device to change in sequence;

[0021] After each change in the connection relationship, detecting the noise of the air conditioner;

[0022] After the noise of the air conditioner reaches the noise requirement, the connection relationship between different silencers of the silencer device is kept unchanged.

[0023] Further, after determining that the noise of the air conditioner does not meet the noise requirement, the method further includes:

[0024] Detecting the noise frequency of the air conditioner;

[0025] The connection relationship between different silencers of the silencer device is changed according to the noise frequency so that the noise of the air conditioner meets the noise requirement.

[0026] Furthermore, the connection relationship between different silencers of the silencer device is changed according to the noise frequency so that the noise of the air conditioner meets the noise requirement, including:

[0027] Determine the amount of sound attenuation required to meet noise requirements;

[0028] Determine the muffler parameters of the muffler device according to the noise frequency of the air conditioner and the muffler amount; wherein the muffler parameters include an equivalent expansion ratio and an equivalent expansion chamber length;

[0029] The connection relationship between different silencers is changed according to the silencer parameters.

[0030] The present invention also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned noise control method is implemented.

[0031] The present invention also provides an electronic device, comprising:

[0032] one or more processors;

[0033] The storage device is used to store one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned noise control method.

[0034] The technical solution of the present invention is applied to set a silencer device, which includes at least two silencer branches, each silencer branch is correspondingly provided with a silencer, and the connection relationship between different silencers can be changed; the connection relationship between different silencers in the silencer device is controlled by a controller, and then the silencer parameters of the silencer device are changed to change the silencer volume of the silencer device. Since the silencer volume is related to the frequency of the noise, the expansion chamber length of the silencer, and the expansion ratio of the silencer, according to different noise frequencies, by changing the connection relationship between different silencers, that is, connecting different silencers in series, in parallel, or in series and parallel, the silencer parameters of the silencer device can be changed by changing the connection relationship between different silencers, and then the silencer volume can be changed, so as to silence noises of different frequencies, so that the noise between the indoor part and the outdoor part of the air conditioner meets the noise requirements, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a structural diagram of an air conditioner according to an embodiment of the present invention;

[0036] Figure 2 is a structural diagram of a silencing device according to an embodiment of the present invention;

[0037] Figure 3 is a structural diagram of a silencing device according to another embodiment of the present invention;

[0038] Figure 4 is an internal structure diagram of a muffler according to an embodiment of the present invention;

[0039] Figure 5 is a flow chart of a noise control method according to an embodiment of the present invention;

[0040] Figure 6 FIG. 4 is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0043] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] It should be understood that although the terms first, second, third, etc. may be used to describe valves in the embodiments of the present invention, the valves should not be limited to these terms. These terms are only used to distinguish valves arranged at different positions. For example, without departing from the scope of the embodiments of the present invention, the first valve may also be referred to as the second valve, and similarly, the second valve may also be referred to as the first valve.

[0045] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0046] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0047] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0048] Example 1

[0049] After the air conditioner is installed in the client, it often produces unpleasant noise problems. In the prior art, a silencer is provided to reduce the noise. The silencer parameters of the silencer are fixed and can only reduce the noise of a certain frequency or a certain frequency band. However, the frequency of the noise is uncertain, so except for a specific frequency, the silencer effect at other frequencies is poor.

[0050] In view of the problem that the muffler parameters of the muffler device in the prior art air conditioner are fixed and the muffler parameters cannot be adaptively adjusted according to the noise frequency, resulting in poor muffler effect, this embodiment provides a muffler device applied to the air conditioner. Figure 1 : is a structural diagram of an air conditioner according to an embodiment of the present invention, Figure 1 As shown, the air conditioner includes an indoor heat exchanger 1, an outdoor heat exchanger (not shown in the figure, a component connected by a large valve and a small valve in the figure), a four-way valve 4 and a compressor 3. The indoor heat exchanger is connected to the outdoor heat exchanger through a throttle valve 2, the outdoor heat exchanger is connected to the first interface E of the four-way valve, the second interface S of the four-way valve is connected to the suction end of the compressor, the third interface C of the low-pass valve is connected to the indoor heat exchanger, and the fourth interface D of the four-way valve is connected to the exhaust end of the compressor. The silencer is arranged between the four-way valve and the exhaust port of the compressor, its inlet end is connected to the exhaust end of the compressor, and its outlet end is connected to the four-way valve.

[0051] Figure 2 is a structural diagram of a silencing device according to an embodiment of the present invention, as shown in Figure 2 As shown, the silencing device includes at least two silencing branches. Figure 2 In the example, the number of silencer branches is three. In actual applications, the number of silencer branches can be at least two. A silencer is correspondingly arranged on each silencer branch, and the connection relationship between different silencers can be changed; a controller (not shown in the figure) is used to control the connection relationship between different silencers in the silencer device, thereby changing the silencer parameters of the silencer device to change the silencer volume of the silencer device.

[0052] The silencer device of this embodiment includes at least two silencer branches, each silencer branch is correspondingly provided with a silencer, and the connection relationship between different silencers can be changed; the connection relationship between different silencers in the silencer device is controlled by a controller, and then the silencer parameters of the silencer device are changed to change the silencer volume of the silencer device. Since the silencer volume is related to the frequency of the noise, the expansion chamber length of the silencer, and the expansion ratio of the silencer, according to different noise frequencies, by changing the connection relationship between different silencers, that is, connecting different silencers in series, in parallel, or in series and parallel, the silencer parameters of the silencer device can be changed by changing the connection relationship between different silencers, and then the silencer volume can be changed, so as to silence noise of different frequencies, so that the noise between the indoor part and the outdoor part of the air conditioner meets the noise requirements, and improve the user experience.

[0053] like Figure 2 As shown, in order to realize more connection relationship changes such as series, parallel, series-parallel, etc., each silencer branch includes: a first valve, arranged on the inlet pipeline of each silencer branch; a second valve, arranged on the outlet pipeline of each silencer branch; a third valve, arranged between the outlet pipeline of each silencer branch and the inlet pipeline of any other silencer branch.

[0054] For the convenience of description, the above mentioned Figure 2 The first valves of the three silencer branches are marked as control valve 21, control valve 22, and control valve 23, respectively; the second valves of the three silencer branches are marked as control valve 24, control valve 25, and control valve 26, respectively; and the two third valves are named control valve 27 and control valve 28, respectively.

[0055] like Figure 2 As shown, the three silencer branches are the first silencer branch, the second silencer branch, and the third silencer branch from left to right, and the corresponding silencers are the first silencer, the second silencer, and the third silencer. When the control valves 23, 24, 27, and 28 are opened and the control valves 21, 22, 25, and 26 are closed, the three silencers can be connected in series; when the control valves 22, 24, and 27 are opened and the control valves 21, 23, 25, 26, and 28 are closed, the first silencer and the second silencer can be connected in series. When the control valves 23, 25, and 28 are opened and the control valves 21, 22, 24, 26, and 27 are closed, the second silencer and the third silencer can be connected in series.

[0056] When control valves 21, 22, 23, 24, 25, and 26 are all opened and control valves 27 and 28 are closed, three silencers can be connected in parallel.

[0057] When the control valves 21, 22, 24, and 25 are opened and the control valves 23, 26, 27, and 28 are closed, the first muffler and the second muffler can be connected in parallel.

[0058] When the control valves 22, 23, 25, and 26 are opened and the control valves 21, 24, 27, and 28 are closed, the second muffler and the third muffler can be connected in parallel.

[0059] Connecting multiple silencers in series or in series-parallel changes the expansion ratio of the silencer and can eliminate noise of different frequencies.

[0060] For example, in the development of a certain air-conditioning product, when there is no silencer in the outdoor unit pipeline, the outdoor unit spectrum has two obvious noise peaks: around 100Hz and 600Hz. The peaks are high and the experience is poor. According to the formula mentioned in the previous question, the silencing frequency depends on the expansion chamber length and expansion ratio of the silencer. If a silencer is installed, only one of 100Hz or 600Hz can be eliminated, and the noise cannot be completely eliminated.

[0061] The muffler device of the present invention is assembled in an outdoor unit with a fixed box, the inlet end is connected to the compressor exhaust port, and the outlet end is connected to a four-way valve. For example, the first muffler (inlet pipe diameter r1 = 5mm. expansion chamber diameter r2 = 25mm. expansion chamber length L = 200mm) can eliminate 100-150Hz noise, muffler 2 (inlet pipe diameter r1 = 5mm. expansion chamber diameter r2 = 40mm. expansion chamber length L = 120mm) can eliminate 200-250Hz, and muffler 3 (inlet pipe diameter r1 = 5mm. expansion chamber diameter r2 = 50mm. expansion chamber length L = 100mm) can eliminate 500-600Hz; the control valve plays the role of a switch, and by debugging the control valve and the single-phase valve, any two or three of the first muffler, the second muffler, and the third muffler can be connected in series or in parallel, and noise of multiple frequency bands can be eliminated in a variety of combinations.

[0062] Figure 3 FIG. 1 is a structural diagram of a silencer device according to another embodiment of the present invention. The third valve is used to connect different silencers in series. The third valve can be an electronic valve controlled by a controller. However, the cost of the electronic valve is relatively high. Moreover, if there are many silencer branches, more controller resources are required to control the third valve. In order to solve this problem, the effect of connecting silencers in series is achieved at the same time. Figure 3 As shown, the third valve is a one-way valve.

[0063] For the convenience of description, the above mentioned Figure 3 The first valves of the three silencer branches are marked as control valve 31, control valve 32, and control valve 33, respectively; the second valves of the three silencer branches are marked as control valve 34, control valve 35, and control valve 36, respectively; and the two one-way valves are named first one-way valve 37 and second one-way valve 38, respectively.

[0064] like Figure 3 As shown, the three silencer branches are the first silencer branch, the second silencer branch, and the third silencer branch from left to right, and the corresponding silencers are the first silencer, the second silencer, and the third silencer. When the control valves 33 and 34 are opened, the control valves 31, 32, 35, and 36 are closed, and the refrigerant flows through the first check valve 37 and the second check valve 38, the three silencers can be connected in series; when the control valves 32 and 34 are opened, the control valves 31, 33, 35, and 36 are closed, and the refrigerant flows through the first check valve 37, the first silencer and the second silencer can be connected in series. When the control valves 33 and 35 are opened, the control valves 31, 32, 34, and 36 are closed, the second silencer and the third silencer can be connected in series, and the refrigerant flows through the second check valve 38.

[0065] When the control valves 31, 32, 33, 34, 35, and 36 are all opened, refrigerant flows through the first one-way valve 37 and the second one-way valve 38, and the three silencers can be connected in series and parallel, that is, a part of the refrigerant passes through the three silencers in sequence, and for this part of the refrigerant, the relationship between the three silencers is series, a part of the refrigerant passes through two silencers in sequence, and for this part of the refrigerant, the relationship between the two silencers is series, and for the other part of the refrigerant, it is divided into three branches and flows through the three silencers respectively, and for this part of the refrigerant, the connection relationship between the three silencers is parallel.

[0066] When the control valves 31, 32, 34, and 35 are opened, and the control valves 33 and 36 are closed, and refrigerant flows through the first one-way valve 37, the series-parallel connection of the first silencer and the second silencer can be realized, that is, after the refrigerant passes through the second silencer, a part of it enters the second silencer, and for this part of the refrigerant, the connection relationship between the first silencer and the second silencer is a series relationship; the other part of the refrigerant enters the first silencer and the second silencer separately, and for this part of the refrigerant, the connection relationship between the first silencer and the second silencer is a parallel relationship.

[0067] When the control valves 32, 33, 35, and 36 are opened, and the control valves 31 and 34 are closed, and refrigerant flows through the second one-way valve 38, the second muffler and the third muffler can be connected in series and parallel. After the refrigerant passes through the third muffler, a part of it enters the third muffler. For this part of the refrigerant, the connection relationship between the third muffler and the second muffler is a series relationship; the other part of the refrigerant enters the third muffler and the second muffler separately. For this part of the refrigerant, the connection relationship between the third muffler and the second muffler is a parallel relationship.

[0068] Connecting multiple silencers in series or in series-parallel changes the expansion ratio of the silencer and can eliminate noise of different frequencies.

[0069] Figure 4The figure is an internal structure diagram of a silencer according to an embodiment of the present invention. Since the noise is generated by the flow of refrigerant, it will propagate in the pipeline along the direction of the flow of the refrigerant. If the diameter of the pipeline suddenly increases, the sound waves of some frequencies will be reflected and cannot continue to propagate in the pipeline, thereby achieving the purpose of noise reduction. Therefore, in order to eliminate the noise of some frequencies, Figure 4 As shown, the above-mentioned silencer includes: an expansion chamber; its inlet end is connected to the inlet pipe of the silencer branch, and its outlet end is connected to the outlet pipe of the silencer branch; wherein the cross-sectional area of ​​the expansion chamber is larger than the cross-sectional area of ​​the inlet pipe of the silencer branch and the cross-sectional area of ​​the outlet pipe.

[0070] The cross-sectional area of ​​the connecting pipe is S1; the expansion cross-sectional area is S2, the effective length of the expansion chamber of the muffler is L, and the theoretical muffler volume Δl follows the following calculation formula:

[0071]

[0072] Wherein: m is the expansion ratio, which is equal to the ratio of the cross-sectional area of ​​the expansion chamber to the cross-sectional area of ​​the inlet pipe, that is, S2 / S1, k is the acoustic wave number, and k = 2πf / c. f is the anechoic frequency, and c is the medium propagation sound velocity.

[0073] From the above formula, we can know that the parameters that affect the silencing effect include not only the frequency of the noise, but also some structural parameters of the silencer, including the expansion ratio and the expansion chamber length. The expansion ratio is the ratio of the cross-sectional area of ​​the expansion chamber of the silencer to the cross-sectional area of ​​the inlet pipe. If multiple silencers are connected in series, in parallel, or in series and parallel, then the amount of silencing is related to the parameters of the silencing device composed of multiple silencers. The above silencing parameters include: equivalent expansion ratio and equivalent expansion chamber length. Among them, the equivalent expansion ratio is the equivalent value of the expansion ratio of all silencers involved in the operation; the equivalent expansion chamber length is the total length of all silencers involved in the operation.

[0074] Assume that the expansion chamber length of one silencer is L1, the cross-sectional area of ​​the expansion chamber is S2, the cross-sectional area of ​​the inlet pipe is S1, and its expansion ratio is m1=S2 / S1; the expansion chamber length of another silencer is L2, the cross-sectional area of ​​the expansion chamber is S4, the cross-sectional area of ​​the inlet pipe is S3, and its expansion ratio is m2=S4 / S3. Then, if these two silencers are connected in series, it is equivalent to lengthening the length of the silencer, and the equivalent expansion chamber length is the total length of the two silencers: L1+L2; if the two silencers are connected in parallel, it is equivalent to thickening the cross-sectional areas of the inlet pipe and the expansion chamber, and the equivalent expansion ratio is m3=(S2+S4) / (S1+S3).

[0075] According to the above formula, on the one hand, since the amount of attenuation is positively correlated with the length of the expansion chamber within a certain range, in some embodiments of the present invention, the amount of attenuation of the silencer can be increased by connecting different silencers in series and increasing the equivalent expansion chamber length; on the other hand, since the amount of attenuation is positively correlated with the expansion ratio within a certain range, in some embodiments of the present invention, the amount of attenuation of the silencer can be increased by connecting different silencers in parallel and increasing the equivalent expansion chamber length. However, if the expansion ratios of different silencers in parallel are the same, for example, the above-mentioned S4 / S3=S2 / S1, then the equivalent expansion ratio of the two silencers after being connected in parallel is m3=(S2+S4) / (S1+S3)=S4 / S3=S2 / S1, that is, m3=m2=m1, and the equivalent expansion ratio of the two silencers in parallel is the same as the expansion ratio of one silencer, and the amount of attenuation will not change. Therefore, if it is to be ensured that the equivalent expansion ratio changes after different silencers are connected in parallel, it is necessary to ensure that the expansion ratios of different silencers are different. Therefore, different expansion ratios of the silencer are set to be different.

[0076] Example 2

[0077] The present embodiment provides an air conditioner, comprising the silencer device of the above-mentioned embodiment, which is used to change the connection relationship between different silencers, that is, to connect different silencers in series, in parallel or in series and parallel. The silencer parameters of the silencer device can be changed by changing the connection relationship between different silencers, thereby changing the silencer volume, so that the noise between the indoor and outdoor parts of the air conditioner meets the noise requirements and improves the user experience.

[0078] Example 3

[0079] This embodiment provides a noise control method, which is applied to the noise reduction device of the above embodiment. Figure 5 is a flow chart of a noise control method according to an embodiment of the present invention. Figure 5 As shown, the noise control method includes:

[0080] S101, after determining that the noise of the air conditioner does not meet the noise requirement, controlling the connection relationship between different silencers of the silencer device to change in sequence.

[0081] S102, detecting the noise of the air conditioner after each connection relationship changes.

[0082] S103, after the noise of the air conditioner reaches the noise requirement, the connection relationship between different silencers of the silencer device is kept unchanged.

[0083] After the silencer box module is installed on the outdoor unit of the air conditioner, it is powered on and the air conditioner enters the test mode (the factory default silencer device has control valves 1 and 4 open, and other control valves closed. The unit refrigerant will pass through the first silencer and then enter the four-way valve without passing through other silencers). The unit starts to sweep the frequency and slowly increase the frequency from low to high. At this time, you can experience the noise of the outdoor unit and the indoor unit to confirm the sound quality of the unit. If the indoor unit or the outdoor unit has poor noise during the experience, the control valve can be used to connect the three silencers in parallel, in series, and as a single unit to eliminate the unit noise. When the noise meets the noise requirements, the debugged program is rewritten into the air conditioner for solidification. When the air conditioner is turned on and operated later, it will operate according to the new program.

[0084] The noise control method of this embodiment, after determining that the noise of the air conditioner does not meet the noise requirement, controls the connection relationship between different silencers of the silencer device to change in sequence, detects the noise of the air conditioner after each connection relationship changes, and maintains the connection relationship between different silencers of the silencer device unchanged after the noise of the air conditioner meets the noise requirement. Compared with ordinary air conditioners, the noise problem can be solved quickly, thereby improving user experience.

[0085] After determining that the air conditioner has a loud noise, the frequency can be scanned according to the above steps. However, this process requires constantly switching the connection relationship between silencers of different functions, which is still time-consuming. In order to further improve the silencer efficiency, after determining that the noise of the air conditioner does not meet the noise requirements, the above method also includes: detecting the noise frequency of the air conditioner; changing the connection relationship between different silencers of the silencer device according to the noise frequency, so that the noise of the air conditioner meets the noise requirements.

[0086] Specifically, the connection relationship between different silencers of the silencer device is changed according to the noise frequency so that the noise of the air conditioner meets the noise requirement, including:

[0087] Determine the amount of noise reduction required to meet the noise requirements to ensure that the noise requirements are finally met; then based on the formula mentioned above The equivalent expansion ratio m and the equivalent expansion chamber length L of the silencer device are determined according to the noise frequency and the sound attenuation amount of the air conditioner; the connection relationship between different silencers is changed according to the silencer parameters. In specific implementation, the equivalent expansion chamber length L can be determined first, and then the equivalent expansion ratio m required to achieve the target sound attenuation amount is calculated, and then the expansion ratio of the currently running silencer is combined with the expansion ratio data of all the silencers to determine which one or more silencers are involved in parallel operation, and then the corresponding control valves are controlled to open; the equivalent expansion ratio m can also be determined first, and then the equivalent expansion chamber length L required to achieve the target sound attenuation amount is calculated, and then the expansion chamber length L of the currently running silencer is combined with the expansion chamber length data of all the silencers to determine which one or more silencers are involved in series operation, and then the corresponding control valves are controlled to open, and the equivalent expansion chamber length L and the equivalent expansion ratio m can also be adjusted synchronously.

[0088] Example 4

[0089] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the noise control method of the above embodiment is implemented.

[0090] Example 5

[0091] This embodiment provides an electronic device, including:

[0092] one or more processors;

[0093] The storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the noise control method of the above embodiment.

[0094] Figure 6 FIG. 1 is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Figure 6 As shown, the device includes:

[0095] One or more processors 610 and memory 620, Figure 6 A processor 610 is taken as an example.

[0096] The device of the noise control method may further include: an input device 630 and an output device 640 .

[0097] The processor 610, the memory 620, the input device 630 and the output device 640 may be connected via a bus or other means. Figure 6 The example of connecting through bus is taken in the following.

[0098] The memory 620 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the noise control method in the embodiment of the present invention. The processor 610 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 620, that is, implementing the above method embodiment.

[0099] The memory 620 may include a program storage area and a data storage area, wherein the program storage area may store an application required for operating the device and at least one function; the data storage area may store data created according to the use of the noise control method, etc. In addition, the memory 620 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0100] The input device 630 can receive input digital or character information and generate key signal input related to user settings and function control of the electronic device. The output device 640 can include a display device such as a display screen.

[0101] The one or more modules are stored in the memory 620, and when executed by the one or more processors 610, the noise control method in any of the above method embodiments is executed.

[0102] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0103] The electronic device of the embodiment of the present invention exists in various forms, including but not limited to:

[0104] (1) Mobile communication devices: These devices are characterized by their mobile communication functions and their main purpose is to provide voice and data communications. These terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.

[0105] (2) Ultra-mobile personal computer devices: These devices fall into the category of personal computers, have computing and processing capabilities, and generally also have mobile Internet access features. These terminals include: PDA, MID and UMPC devices, such as iPad.

[0106] (3) Portable entertainment devices: These devices can display and play multimedia content. They include audio and video players (such as iPods), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

[0107] (4) Server: A device that provides computing services. The server consists of a processor, hard disk, memory, device bus, etc. The server is similar to the general computer architecture, but because it needs to provide highly reliable services, it has higher requirements in terms of processing power, stability, reliability, security, scalability, manageability, etc.

[0108] (5) Other electronic devices with data interaction functions, such as televisions, large-screen cars, etc.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A silencing device, applied to an air conditioner, the air conditioner comprising an indoor heat exchanger, an outdoor heat exchanger, a four-way valve and a compressor, characterized in that: The muffler device has an inlet end connected to the exhaust end of the compressor and an outlet end connected to the four-way valve. The muffler device includes at least two muffler branches, each of which has a corresponding muffler, and the connection relationship between different mufflers can be changed; The controller is used to control the connection relationship between different silencers in the silencer device, thereby changing the silencer parameters of the silencer device to change the silencer volume of the silencer device.

2. The silencing device according to claim 1, characterized in that: The noise elimination branch comprises: A first valve is arranged on the inlet pipeline of the muffler branch; A second valve is arranged on the outlet pipe of the muffler branch; The third valve is arranged between the outlet pipeline of each muffler branch and the inlet pipeline of any other muffler branch.

3. The silencing device according to claim 2, characterized in that: The third valve is a one-way valve.

4. The silencing device according to claim 2, characterized in that: The silencer comprises: An expansion chamber; the inlet end of which is connected to the inlet pipeline of the muffler branch, and the outlet end of which is connected to the outlet pipeline of the muffler branch; Wherein, the cross-sectional area of ​​the expansion chamber is larger than the cross-sectional area of ​​the inlet pipeline of the muffler branch and the cross-sectional area of ​​the outlet pipeline.

5. The silencing device according to claim 4, characterized in that: The noise reduction parameters include: equivalent expansion ratio and equivalent expansion chamber length; Among them, the equivalent expansion ratio is the equivalent value of the expansion ratio of all mufflers involved in the operation; the expansion ratio is the ratio of the cross-sectional area of ​​the expansion chamber of the muffler to the cross-sectional area of ​​the inlet pipe; the equivalent expansion chamber length is the total length of all mufflers involved in the operation.

6. The silencing device according to claim 5, characterized in that: Different silencers of the silencer device have different expansion ratios.

7. An air conditioner, characterized in that: A noise reduction device comprising the sound absorbing device according to any one of claims 1 to 6.

8. A noise control method, applied to the silencing device according to any one of claims 1 to 6, characterized in that: The method comprises: After determining that the noise of the air conditioner does not meet the noise requirement, controlling the connection relationship between different silencers of the silencer device to change in sequence; After each change in the connection relationship, detecting the noise of the air conditioner; After the noise of the air conditioner reaches the noise requirement, the connection relationship between different silencers of the silencer device is kept unchanged.

9. The method according to claim 8, characterized in that After determining that the noise of the air conditioner does not meet the noise requirement, the method further includes: Detecting the noise frequency of the air conditioner; The connection relationship between different silencers of the silencer device is changed according to the noise frequency so that the noise of the air conditioner meets the noise requirement.

10. The method according to claim 9, characterized in that Changing the connection relationship between different silencers of the silencer device according to the noise frequency so that the noise of the air conditioner meets the noise requirement includes: Determine the amount of sound attenuation required to meet noise requirements; Determine the muffler parameters of the muffler device according to the noise frequency of the air conditioner and the muffler amount; wherein the muffler parameters include an equivalent expansion ratio and an equivalent expansion chamber length; The connection relationship between different silencers is changed according to the silencer parameters.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 8 to 10 is implemented.

12. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the one or more processors to implement the method according to any one of claims 8 to 10.

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