CN114838495A - An adjustable air conditioner muffler - Google Patents

Abstract

The invention provides an adjustable air conditioner silencer, comprising: the silencer cavity comprises a refrigerant part and a driving part; under the condition that the refrigerant passes through the refrigerant part, the volume of the refrigerant part is changed according to the volume change of the driving part so as to realize the noise reduction of the refrigerant. The silencer cavity is provided with the refrigerant part and the driving part, the refrigerant part is used for enabling the refrigerant to pass through the refrigerant part, the driving part is used for achieving volume change, and the total volume inside the silencer cavity is not changed, so that the volume of the refrigerant part is changed according to the volume change of the driving part, and finally good silencing under different working conditions is achieved without considering the type of an air conditioner, and therefore the assembly process is simplified, the assembly cost is saved, time and labor are saved, the debugging cost is reduced, and the production efficiency is improved.

Description

An adjustable air conditioner muffler

technical field

The invention relates to the field of air conditioners, in particular to an adjustable air conditioner muffler.

Background technique

During the operation of the air conditioner compressor, there is a violent movement, which will produce a sharp abnormal sound of a certain frequency. Therefore, a muffler will be added in the air conditioner design process to eliminate this abnormal sound. The specific steps are: after formulating the pipeline plan, carry out the noise test on the external unit of the air conditioner to obtain the peak frequency of the abnormal sound, select the muffler according to this frequency, sound speed and piping specifications, and then customize the muffler with a fixed length. Relevant pipelines, perform the noise test again. For an outdoor unit of an air conditioner, multiple mufflers are required to be tested until the muffler with the best effect of eliminating abnormal noise is selected. This process is time-consuming and labor-intensive, and increases the cost of debugging the air conditioner.

Air-conditioning refrigerant noise mainly includes the sound of refrigerant airflow and liquid flow, as well as the sound of pipeline vibration and pipeline collision. The size of the noise is related to the amount of refrigerant, the flow rate, the thickness of the pipeline, and the installation method of the pipeline. The usual solution is to connect the air conditioner muffler in series in the pipeline.

The air conditioner muffler is a device that uses the principles of sound absorption, reflection, and interference to reduce the sound of airflow and liquid flow in the pipeline of the external air conditioner. The common air conditioner muffler is a cylindrical central control structure, which is connected in series in the air conditioner outer unit pipeline. Mufflers are available in various sizes, the main differences are in length, diameter, cavity volume, shape, etc. Mufflers of different sizes are suitable for reducing different types of noise and noise in different compressor frequency bands.

In the existing air conditioner mufflers, it is often impossible to adjust the volume of the cavity, and only a single type of air conditioner muffler can be selected, and such a single type of air conditioner muffler can only have a good noise reduction effect under fixed working conditions, and cannot meet the Good noise reduction under all working conditions, and it is impossible to debug the air conditioner well, which increases the debugging cost. At present, there is no technical solution to change the amount of noise at a specific frequency by changing the volume of the cavity. Specifically, there is no An adjustable air conditioner muffler.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an adjustable air conditioner muffler, comprising: a muffler cavity, the muffler cavity including a refrigerant part and a driving part;

When the refrigerant passes through the refrigerant portion, the volume of the refrigerant portion is changed according to the change in the volume of the drive portion, so as to silence the refrigerant.

According to the adjustable air conditioner muffler provided by the present invention, the driving part includes a movable inner side wall, and the movable inner side wall is connected with one end of the telescopic link, so as to adjust the length of the telescopic link to realize all The volume change of the driving part.

According to the adjustable air conditioner muffler provided by the present invention, the other end of the telescopic link is connected to a motor, and the motor drives the telescopic link to move left and right along the length direction of the muffler cavity.

According to the adjustable air conditioner muffler provided by the present invention, foam metal is provided on the outer surface of the movable inner side wall on the side close to the refrigerant part.

According to the adjustable air conditioner muffler provided by the present invention, the inner wall of the muffler cavity along the length direction is provided with a slide rail, and the connection between the movable inner side wall and the muffler cavity is provided with a pulley, and the pulley move on the rails.

According to the adjustable air conditioner muffler provided by the present invention, a muffler layer is provided between the outer wall of the muffler cavity and the inner wall of the muffler cavity.

According to the adjustable air conditioner muffler provided by the present invention, the muffler layer is set as follows:

set muffler cotton;

Or, set up a vacuum layer.

According to the adjustable air conditioner muffler provided by the present invention, the muffler cavity is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant flow direction is perpendicular to the moving direction of the telescopic link.

According to the adjustable air conditioner muffler provided by the present invention, it further includes a buffering and draining part, and the buffering and draining part is arranged on the inner wall of the muffler cavity close to the refrigerant outlet.

The adjustable air conditioner muffler provided according to the present invention further includes a sound sensor, and the sound sensor is disposed in contact with the outer wall of the muffler cavity.

In the present invention, the muffler cavity is configured as a refrigerant part and a driving part, the refrigerant part is used to pass the refrigerant through the refrigerant part, and the driving part is used to realize the volume change. The volume is constant, so that the volume of the refrigerant part can be changed according to the volume change of the driving part, and finally, good noise reduction in different working conditions can be achieved regardless of the model of the air conditioner, thereby simplifying the assembly process and saving energy. Assembly costs, save time and effort, reduce commissioning costs, and improve production efficiency.

Description of drawings

In order to explain the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the For some embodiments of the invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is one of the structural representations of an adjustable air conditioner muffler provided by the present invention;

Fig. 2 is the second structural schematic diagram of an adjustable air conditioner muffler provided by the present invention;

FIG. 3 is a third structural schematic diagram of an adjustable air conditioner muffler provided by the present invention.

Among them, the reference numerals are:

1: Muffler cavity; 11: Refrigerant part; 12: Drive part; 13: Motor;

14: foam metal; 15: slide rail; 16: pulley; 17: sound-absorbing layer;

18: Refrigerant inlet; 19: Refrigerant outlet; 20: Buffer drainage part;

21: sound sensor; 121: movable inner side wall; 122: retractable link.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that, in the description of the embodiments of the present invention, the terms "comprising", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, thereby making a process, method, article or device including a series of elements Not only those elements are included, but other elements not expressly listed or inherent to such a process, method, article or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. The orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The terms "first", "second" and the like in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between "first", "second", etc. The objects are usually of one type, and the number of objects is not limited. For example, the first object may be one or more than one. In addition, "and/or" indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

FIG. 1 is one of the structural schematic diagrams of an adjustable air conditioner muffler provided by the present invention, FIG. 2 is the second structural schematic diagram of an adjustable air conditioner muffler provided by the present invention, and FIG. 1 and FIG. 2 show the The schematic diagram of the internal volume change of the cavity of the adjustable air conditioner muffler, including: a muffler cavity 1, the muffler cavity 1 includes a refrigerant part 11 and a driving part 12; the muffler cavity 1 includes a The shell of the inner cavity of the muffler and the hollow part inside the shell, the shell that constitutes the inner cavity of the muffler is preferably a cylindrical structure, and accordingly, the muffler cavity 1 is preferably set as a cylinder In other embodiments, the casing that constitutes the inner cavity of the muffler can also be set as a cuboid structure. Correspondingly, the muffler cavity 1 is preferably set as a cuboid, and in a special In the embodiment, the shape of the shell constituting the inner cavity of the muffler and the shape of the hollow part inside the shell may be different, which will not be repeated here.

The muffler cavity 1 includes a refrigerant portion 11, and the refrigerant portion 11 is used for the refrigerant to pass through. As shown in FIG. 1, the refrigerant flows in the vertical direction, and the driving portion 12 moves left and right along the horizontal direction. When the driving part 12 is laterally moved to the left, the volume of the refrigerant part 11 becomes smaller, and when the driving part 12 is laterally moved to the right, the volume of the refrigerant part 11 becomes larger. .

As shown in FIG. 1 , the refrigerant part 11 is arranged on the left side of the muffler cavity, and the driving part 12 is arranged on the right side of the muffler cavity. In other embodiments, the The refrigerant part 11 can also be arranged on the right side of the muffler cavity, and the driving part 12 can be arranged on the left side of the muffler cavity.

As shown in FIG. 1 , the volume of the refrigerant part 11 and the driving part 12 are the same, while in FIG. 2 , the volumes of the refrigerant part 11 and the driving part 12 have changed, and the volume of the refrigerant part 11 The volume is obviously larger than the volume of the driving part 12. Further, FIG. 1 and FIG. 2 are only for showing the volume change of the refrigerant part 11 and the driving part 12 in the working state, that is, when the volume shown in FIG. When the relative positions of the refrigerant part 11 and the driving part 12 are matched, there is a corresponding air-conditioning working condition, so as to muffle the noise under the air-conditioning working condition. When the relative position of the refrigerant part 11 and the driving part 12 is determined, there is another air-conditioning working condition corresponding to it, which is used to muffle the noise under the air-conditioning working condition in this case, except that in Fig. 1 and FIG. 2, the present invention does not exhaust all the relative positions of the refrigerant part 11 and the driving part 12, and the driving part 12 is preferably set in a stepless adjustment mode, so as to more accurately adjust the various positions. The noise of the air conditioner under working conditions is silenced.

When the refrigerant passes through the refrigerant part 11 , according to the volume change of the driving part 12 , the volume of the refrigerant part 11 is changed to achieve noise reduction of the refrigerant. As shown in FIG. 1 , the refrigerant can be It passes through the refrigerant part 11 from top to bottom, and can also pass through the refrigerant part 11 from bottom to top. Under different working conditions, the sound of refrigerant airflow and liquid flow are also different. The sound of vibration and pipeline collision is also different. Since the size of the noise is related to the amount of refrigerant, the flow rate, the thickness of the pipeline, and the installation method of the pipeline, through the technical scheme of the present invention, the volume of the refrigerant part 11 can be changed to realize the The refrigerant is silenced.

In the present invention, the muffler cavity is configured as a refrigerant part and a driving part, the refrigerant part is used to pass the refrigerant through the refrigerant part, and the driving part is used to realize the volume change. The volume is constant, so that the volume of the refrigerant part can be changed according to the volume change of the driving part, and finally, good noise reduction in different working conditions can be achieved regardless of the model of the air conditioner, thereby simplifying the assembly process and saving energy. Assembly costs, save time and effort, reduce commissioning costs, and improve production efficiency.

FIG. 3 is the third structural schematic diagram of an adjustable air conditioner muffler provided by the present invention. The driving part 12 includes a movable inner side wall 121, and the movable inner side wall 121 is connected to one end of the telescopic link 122 to adjust according to the The length of the telescopic link 122 is adjusted to realize the volume change of the driving part 12 .

Optionally, the width of the movable inner side wall 121 of the driving part 12 is adapted to the inner diameter of the muffler cavity 1 , which can effectively block the driving part 12 and the refrigerant part 11 It is used to change the volume of the refrigerant part 11, the telescopic link 122 is vertically connected with the movable inner side wall 121, and in other embodiments, the telescopic link 122 is connected to the The movable inner side wall 121 forms a triangular structure, which is used to strengthen the fixing of the telescopic link 122 and the movable inner side wall 121, and a reinforcing rib structure can also be arranged on the outer wall of the telescopic link 122 , to improve the firmness of the telescopic link 122 .

The retractable connecting rod 122 and the movable inner side wall 121 can be integrally formed, or can be fixedly connected by means of screw connection, welding, riveting, etc. More specifically, the retractable connecting rod 122 can also be For the sleeve rod structure, in such an embodiment, multi-segment extension of the connecting rod can be realized to increase the telescopic length of the telescopic connecting rod 122 , which is preferably a steel material.

Optionally, the other end of the telescopic link 122 is connected to a motor 13, and the motor 13 drives the telescopic link 122 to move left and right along the length direction of the muffler cavity 1. The rod 122 is a straight rod structure, one end of which is vertically connected to the movable inner side wall 121, and the other end of which is drivingly connected to a motor 13, and based on the driving of the motor 13, the telescopic link 122 is driven along the muffler cavity. The length direction of the body 1 is moved to the left or right to realize the volume change of the driving part 12 . Specifically, the motor 13 drives the retractable link 122 to move to the left, and the retractable link 122 drives the movable inner side wall 121 to move to the left, thereby increasing the volume of the driving part 12 . The volume of the refrigerant part 11 becomes smaller; the motor 13 drives the retractable link 122 to move to the right, and the retractable link 122 drives the movable inner side wall 121 to move to the right, thereby making the drive The volume of the part 12 becomes smaller, and the volume of the refrigerant part 11 becomes larger.

Those skilled in the art understand that the present invention first performs a noise test on the air conditioner to obtain the peak frequency of the noise, and adjusts the retractable link 122 based on the peak frequency to change the volume of the refrigerant portion, based on the After changing the volume of the refrigerant part, the peak frequency of the noise is obtained again to determine whether the noise has become smaller. After repeated debugging, the noise is finally reduced within the preset threshold. Compared with the existing technology, it is necessary to constantly replace the muffler under different working conditions. In the case of the device, the present invention can realize the stepless adjustment, and then select the most suitable silencing state, the present invention saves time and effort, reduces the debugging cost, and improves the production efficiency.

The interior of the drive part 12 is preferably set as a hollow structure, and it can also be set as a vacuum structure. The present invention does not make any limitations on the interior of the drive part 12, but it is preferably set as: when the drive motor When the movable inner side wall 121 is controlled, the resistance generated by the movable inner side wall 121 to the motor is reduced as much as possible.

Optionally, foam metal 14 is provided on the outer surface of the movable inner side wall 121 on the side close to the refrigerant portion 11 , and foam metal refers to a special metal material containing foam pores. Through its unique structural characteristics, foam metal has a series of good advantages, such as low density, good heat insulation performance, good sound insulation performance, and ability to absorb electromagnetic waves. When it is applied to the adjustable air conditioner muffler, it can play a role in sound insulation and heat insulation. On the basis of such an embodiment, the foam metal 14 can also be provided on all inner surfaces of the inner wall of the refrigerant portion 11 to better achieve the sound insulation effect.

Optionally, the inner wall of the muffler cavity 1 along the length direction is provided with a slide rail 15, and the movable inner side wall 121 is connected with the muffler cavity 1 is provided with a pulley 16, and the pulley 16 is located in the muffler cavity 1. The sliding rail 15 moves on the sliding rail 15. Those skilled in the art understand that the sliding rail 15 and the pulley 16 are preferably suitable for the muffler cavity 1 of a rectangular parallelepiped. The two end points along the diameter direction of the muffler cavity 1 can be used as the positions for setting the sliding rails 15 , as shown in FIG. 3 , where the movable inner side wall 121 is connected with the muffler cavity 1 Four sets of pulleys are provided, and in other embodiments, there may be 5 sets of pulleys, 6 sets of pulleys or even more.

It should be noted that when the technical solution of the pulley 16 and the slide rail 15 is adopted, it is necessary to perform sealing treatment. Preferably, a sealing strip can be provided on the outer side of the slide rail 15. In other embodiments, all The pulley 16 can also be adjusted to be a slide rail that is compatible with the slide rail 15 without a pulley. The connection between 121, the present invention uses the slide rail 15 and the pulley 16 to better realize the relative movement of the muffler cavity 1 and the movable inner side wall 121, so as to reduce the noise generated during the relative movement and reduce the noise caused by the relative movement. It is convenient for users to adjust, and this embodiment can also prolong the service life of the movable inner side wall 121 and the muffler cavity 1 .

Optionally, a muffler layer 17 is provided between the outer wall of the muffler cavity 1 and the inner wall of the muffler cavity, and the muffler layer 17 is used to further eliminate the noise of the air conditioner. In addition to the above two methods, other sound-absorbing materials can also be installed, such as micro-perforated plates. The micro-perforated plate muffler is made of micro-perforated plate sound-absorbing structure It is a new type of muffler that does not need any porous sound-absorbing material, and only drills many micro-holes on a thin metal plate with a thickness of less than 1 mm. The diameter of these micro-holes is generally about 0.5 to 1 mm, and the perforation rate is between 1% and 3%. There is a certain cavity behind the perforated plate, which becomes the sound absorption structure of the micro-perforated plate. The micro-perforated plate is a sound-absorbing element with high acoustic resistance and low sound quality, which will not be described here.

Optionally, the muffler cavity 1 is provided with a refrigerant inlet 18 and a refrigerant outlet 19, the refrigerant flow direction is perpendicular to the moving direction of the retractable link, and the refrigerant inlet 18 and refrigerant outlet 19 are preferably opposite. As shown in FIG. 3 , the refrigerant inlet 18 is arranged above the refrigerant portion 11 , the refrigerant outlet 19 is arranged below the refrigerant portion 11 , and in other embodiments, the refrigerant inlet 18 is arranged below the refrigerant portion 11, and the refrigerant outlet 19 is arranged above the refrigerant portion 11, and in another special embodiment, it can also be arranged in a non-corresponding manner. The present invention is different from the prior art. The arrangement in which the flow direction of the refrigerant is perpendicular to the moving direction of the telescopic link will not increase the resistance of the movable inner side wall due to the blocking of other components, thereby realizing the adjustment of the volume of the refrigerant part to a greater extent. At the same time, compared with the arrangement form in the prior art in which the flow direction of the refrigerant and the moving direction of the adjustable part are in the same direction, the present invention has a simpler structure and is easy to replace parts.

Optionally, the buffer drainage part 20 is also included, and the buffer drainage part 20 is arranged on the inner wall of the muffler cavity close to the refrigerant outlet 19. Correspondingly, the slope can be steeper or gentler for the role of refrigerant buffering and drainage. As shown in FIG. 3 , the buffer drainage part 20 can be provided on the left side of the refrigerant outlet 19 to buffer the refrigerant. And drainage, it can adjust the pipeline vibration generated by the refrigerant, adjust the sound of the collision between the refrigerant and the pipeline, and the flow rate of the refrigerant, so as to achieve auxiliary noise reduction.

Optionally, a sound sensor 21 is also included, and the sound sensor 21 is arranged to fit the outer wall of the muffler cavity 1. The sound sensor 21 is used to detect the effect after the sound reduction treatment. As shown in FIG. 3, it can be set On the left side of the refrigerant part, and in other embodiments, it can also be arranged on the upper end and the lower end of the refrigerant part 11. Those skilled in the art understand that as long as it fits the outer wall of the muffler cavity 1, preferably The outer wall of the refrigerant part 11 may be installed in close contact with the outer wall.

The present invention not only realizes structurally determining different volumes of refrigerant parts for air conditioners under different working conditions to silence noises of different frequencies, but also combines the slide rail structure, the sound-absorbing layer 17, the buffering and draining part 20, etc. to assist in realizing the To deal with the noise of the air conditioner, one muffler can meet the debugging requirements of the air conditioner, which reduces the production cost during the debugging process and improves the debugging efficiency of the air conditioner.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An adjustable air conditioner silencer, comprising: the silencer cavity comprises a refrigerant part and a driving part;

under the condition that the refrigerant passes through the refrigerant part, the volume of the refrigerant part is changed according to the volume change of the driving part so as to realize the noise reduction of the refrigerant.

2. The adjustable air conditioning silencer of claim 1, wherein the driving portion includes a movable inner sidewall connected to one end of a telescopic link to enable a volume change of the driving portion according to a length adjustment of the telescopic link.

3. The adjustable air conditioner silencer of claim 2, wherein the other end of the telescopic link is connected to a motor, and the motor drives the telescopic link to move left and right along the length direction of the silencer cavity.

4. The adjustable air conditioner silencer of claim 2, wherein an outer surface of the movable inner side wall on a side close to the refrigerant portion is provided with a metal foam.

5. The adjustable air conditioner silencer of claim 2, wherein the silencer cavity is provided with a slide rail along the inner wall in the length direction, and a pulley is provided at the connection position of the movable inner side wall and the silencer cavity and moves on the slide rail.

6. The adjustable air conditioner silencer of claim 1, wherein a sound deadening layer is disposed between an outer wall of the silencer cavity and an inner wall of the silencer cavity.

7. The adjustable air conditioning silencer of claim 6, wherein the silencing layer is configured as follows:

arranging silencing cotton;

alternatively, a vacuum layer is provided.

8. The adjustable air conditioner silencer of claim 2, wherein the silencer cavity is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant flow direction is perpendicular to the movement direction of the telescopic link.

9. The adjustable air conditioner silencer of claim 8, further comprising a buffer flow guide portion, wherein the buffer flow guide portion is disposed on an inner wall of the silencer cavity close to the refrigerant outlet.

10. The adjustable air conditioner silencer of claim 1, further comprising an acoustic sensor disposed against an outer wall of the silencer cavity.

Images