CN218154527U - Outdoor machine of air conditioner - Google Patents

Abstract

The utility model provides an air condensing units, include: a housing; the compressor is arranged in the accommodating cavity and comprises an exhaust pipe; the silencing device comprises a silencing main pipe, a silencer and a controller, wherein a cylindrical silencing cavity is formed in the silencing main pipe, and the silencing main pipe comprises an air inlet pipe connected with an exhaust pipe; the silencing inner pipe is arranged inside the exhaust pipe and the air inlet pipe; the motor is arranged in the accommodating cavity, is connected with the inner silencing pipe and is used for driving the inner silencing pipe to move in the exhaust pipe and the air inlet pipe; the motor drives the silencing inner tube to move, and the silencing inner tube moves to the set position of the silencing cavity to eliminate compressor transmission sound. The insertion depth of the silencing inner pipe in the silencing main pipe is changed to change the silencing frequency of the silencer, so that the maximum silencing frequency of the silencer can always correspond to the characteristic frequency of the compressor transmission sound, the effect of eliminating the compressor pulsation transmission sound is achieved, and the cost of the silencer of the air conditioner is saved.

Description

Outdoor machine of air conditioner

Technical Field

The utility model relates to an air conditioning technology field especially relates to an air condensing units.

Background

With the diversification of air conditioning products, the performance of the air conditioning products becomes a main target of competition among manufacturers. The noise problem is also the main battlefield for competition among enterprises because of the most complaints from consumers. Compressor delivered noise is the most intolerable noise to consumers in terms of typical air conditioning noise issues.

The generation mechanism of the compressor transmission sound can be divided into two types: one is transmission sound caused by the vibration of the compressor transmitted to the indoor through the pipeline; one is compressor transfer noise generated by pressure pulsations generated by the rotation of the compressor propagating in the piping. The latter is mainly to eliminate the pulsation noise by adding a silencer. However, in the process of product development, the characteristic frequency of the compressor transmission sound needs to be extracted, and then the model of the silencer needs to be selected in a targeted manner, so that not only is the period of product development increased, but also the universality of parts is extremely poor.

At present, the types of the silencers on the market are more than one hundred, and each silencer transmits sound aiming at the pulsation of the compressor with different frequencies. The selection of the silencer is a very complicated problem in the product design and development.

In view of the above, an outdoor unit of an air conditioner is provided, which can eliminate the sound transmitted by the compressors with different frequencies.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve one of the technical problem in the correlation technique at least to a certain extent.

Therefore, the present application is directed to an outdoor unit of an air conditioner, so as to eliminate the transmission sound of compressors of different frequencies.

In order to achieve the above object, the utility model provides an air conditioner outdoor unit, include:

a housing having an accommodating chamber formed therein;

the compressor is arranged in the accommodating cavity and comprises an exhaust pipe;

the silencing device comprises a silencing main pipe, a silencer and a controller, wherein a cylindrical silencing cavity is formed in the silencing main pipe, and the silencing main pipe comprises an air inlet pipe connected with an exhaust pipe;

the silencing inner pipe is arranged inside the exhaust pipe and the air inlet pipe;

the motor is arranged in the accommodating cavity, is connected with the silencing inner pipe and is used for driving the silencing inner pipe to move in the exhaust pipe and the air inlet pipe;

the motor drives the silencing inner pipe to move, and the silencing inner pipe moves to the set position of the silencing cavity so as to eliminate the transmitted sound of the compressor.

The silencing device has the advantages that the insertion depth of the silencing inner pipe in the silencing main pipe is changed to change the silencing frequency of the silencer, so that the maximum silencing frequency of the silencer can correspond to the characteristic frequency of the compressor transmission sound all the time, the effect of eliminating the compressor pulsation transmission sound is achieved, the cost of the silencer of the air conditioner is saved, and meanwhile, the welding and installation time of the silencer is also saved.

In some embodiments of the present application, the initial position of the silencing inner tube is that the silencing inner tube is located in the exhaust tube, the bottom of the silencing inner tube is flush with the top of the silencing main tube, and the initial insertion depth of the silencing inner tube in the silencing main tube is zero, so that the silencing inner tube can be accurately moved to the set insertion depth.

In some embodiments of the present application, the transmission assembly comprises:

the connecting rod is of a right-angle bending structure, one end of the connecting rod is connected with an output shaft of the motor, and the other end of the connecting rod is provided with a clamping part;

the annular magnet is sleeved on the outer peripheral side of the exhaust pipe above the air inlet pipe, attractive acting force is generated between the annular magnet and the silencing inner pipe, and the annular magnet is fixed on the clamping part;

the motor drives the connecting rod to rotate relative to the end connected with the connecting rod, one end of the clamping part of the connecting rod moves upwards or downwards to drive the annular magnet to slide up and down, and the annular magnet attracts the silencing inner pipe to move up and down along the air inlet pipe of the silencing main pipe.

In some embodiments of the present application, a vertical transmission gear is arranged on an output shaft of the motor, one end of the connecting rod connected with the output shaft of the motor is a first end, the first end is provided with a gear groove engaged with the transmission gear, the motor drives the transmission gear to rotate in a vertical plane, and the transmission gear drives the first end to rotate.

In some embodiments of this application, the clamping part is injectd and is had the holding part ring magnet's holding tank, the height of holding tank with ring magnet's thickness looks adaptation to when avoiding the clamping part to drive ring magnet and remove, ring magnet follows drop in the holding tank, influence noise cancelling effect.

In some embodiments of the present application, the inner diameters of the intake pipe and the exhaust pipe are smaller than the inner diameter of the main muffler pipe, and the exhaust pipe is at least partially located in the intake pipe.

In some embodiments of the present application, a bin partition plate is disposed in the accommodating chamber, and the bin partition plate divides the accommodating chamber into a first chamber for installing the fan and a second chamber for installing the muffler and the driving assembly.

In some embodiments of the present application, the motor is bolted to the end face of the second chamber at a location near the top of the compressor.

In some embodiments of this application, the noise elimination inner tube is the iron pipe, just the noise elimination inner tube with the blast pipe is clearance fit, and the noise elimination inner tube can be in comparatively easy up-and-down motion in the blast pipe under ring magnet's effect, the noise elimination inner tube can comparatively easy follow initial position the blast pipe remove to in the noise elimination is responsible for and slides.

In some embodiments of the present application, the motor is a stepping motor, and drives the first end of the connecting rod to rotate clockwise or counterclockwise, so as to raise or lower the ring magnet.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a part of an outdoor unit of an air conditioner according to an embodiment of the present invention;

fig. 2 is a first schematic view illustrating relative positions of a cabin partition and a compressor according to an embodiment of the outdoor unit of an air conditioner of the present invention;

fig. 3 is a schematic view showing the relative positions of the cabin partition and the compressor according to the embodiment of the outdoor unit of the air conditioner of the present invention;

fig. 4 is a third schematic view showing the relative positions of the cabin partition and the compressor according to the embodiment of the outdoor unit of the air conditioner of the present invention;

fig. 5 is a schematic diagram showing relative positions of the compressor, the exhaust pipe, the motor and the transmission assembly according to the embodiment of the outdoor unit of the air conditioner of the present invention;

fig. 6 is a schematic diagram showing the relative positions of the compressor, the exhaust pipe, the motor and the transmission assembly at another view angle according to the embodiment of the outdoor unit of the air conditioner of the present invention;

fig. 7 is a schematic diagram showing the relative positions of the main muffler pipe and the transmission assembly of the outdoor unit of the air conditioner according to the embodiment of the present invention;

FIG. 8 is an enlarged view of section A of FIG. 7;

FIG. 9 is an enlarged view of portion B of FIG. 7;

fig. 10 is a schematic diagram showing the relative positions of the main muffler pipe and the exhaust pipe of the outdoor unit of the present invention;

FIG. 11 isbase:Sub>A sectional view A-A of FIG. 10;

fig. 12 is a schematic position view of the muffling inner tube of the outdoor unit of the present invention at an initial position;

FIG. 13 is a graph showing the relationship between the insertion depth and the muffling frequency of the inner muffling pipe of the 2127524 type muffler;

in the above figures:

10. a compressor; 11. a bin partition; 12. a fan; 13. a first chamber; 14. a second chamber; 20. an exhaust pipe; 21. a first vertical straight tube section; 22. a second transverse straight tube section; 23. a third vertical straight tube section; 30. a main muffler pipe; 31. an inner cavity; 32. an air inlet pipe; 33. an air outlet pipe; 34. a first throat section; 35. a second throat section; 40. a silencing inner pipe; 50. a stepping motor; 51. a transmission gear; 52. a mounting base; 60. a transmission assembly; 61. a connecting rod; 611. a first end; 612. a second end; 62. a clamping portion; 621. accommodating grooves; 63. A ring magnet.

Detailed Description

The present invention will now be described in detail by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the present application, an air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The air conditioner includes an outdoor unit of the air conditioner, which is a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, and an outdoor unit of the air conditioner including an indoor heat exchanger, and an expansion valve may be provided in the outdoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater for a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler for a cooling mode.

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

In order to eliminate both the middle and high frequency transmission sound of the compressor using one muffler, the structure of the following embodiment is particularly proposed.

Referring to fig. 1, an outdoor unit of an air conditioner according to an embodiment of the present application includes a casing defining a receiving chamber for enclosing a body of the outdoor unit of the air conditioner and protecting internal devices thereof; the housing includes a front panel (not shown) having an outlet. The compressor 10 is arranged in the accommodating cavity, and an exhaust port of the compressor 10 is connected with an exhaust pipe 20. A bin partition plate 11 is arranged in the containing cavity and divides the containing cavity into a first cavity 13 for installing a fan 12 and a second cavity 14 for installing a compressor 10 and an exhaust pipe 20.

In the present embodiment, as shown in fig. 5 to 6, the exhaust pipe 20 includes a first vertical straight pipe section 21, a second horizontal straight pipe section 22, and a third vertical straight pipe section 23 connected in sequence, and the exhaust port of the compressor 10 is connected to the first vertical straight pipe section 21.

A main muffler pipe 30 arranged on the third vertical straight pipe section 23 of the exhaust pipe 20, the main muffler pipe 30 defining a cylindrical inner cavity 31, an air inlet pipe 32 arranged at one end of the main muffler pipe 30 connected to the third vertical straight pipe section 23, and an air outlet pipe 33 arranged at the other end, as shown in fig. 10, a first reducing section 34 is arranged between the main muffler pipe 30 and the air inlet pipe 32, and the inner diameter of the first reducing section 34 is gradually reduced from a position close to the main muffler pipe 30 to the position of the air inlet pipe 32; a second necking section 35 is arranged between the main silencing pipe 30 and the air outlet pipe 33, and the inner diameter of the second necking section 35 is gradually reduced from the position close to the main silencing pipe 30 to the position of the air outlet pipe 33.

Part of the structure of the third vertical straight pipe section 23 is sleeved in the air inlet pipe 32 of the main muffler pipe 30, the inner muffler pipe 40 is arranged in the third vertical straight pipe section 23, the inner muffler pipe 40 can move up and down along the third vertical straight pipe section 23, and the insertion depth of the inner muffler pipe 40 in the main muffler pipe 30 is changed; according to the silencing characteristic of the inner-inserting-tube silencer, the inner-inserting-tube silencer can improve transmission loss at a high frequency, and the silencing frequency of the inner-inserting-tube silencer has a certain relation with the insertion depth h of the inner silencing tube 40 in the main silencing tube 30, in the embodiment of the application, the insertion depth h of the inner silencing tube 40 in the main silencing tube 30 is controlled, and in the embodiment, the insertion depth h is the straight-line distance from the air inlet of the first reducing section 34 to the air outlet at the bottom of the inner silencing tube 40, so that high-frequency sound and low-frequency sound of compressor transmission sound are effectively eliminated.

In this embodiment, in order to slide the sound attenuation inner tube 30, a motor is disposed on the cabin partition plate 11 of the accommodating cavity, as shown in fig. 3, the motor of this embodiment is a stepping motor 50, a relationship between an insertion depth of the sound attenuation inner tube 40 in the sound attenuation main tube 30 and a sound attenuation frequency is preset in a storage unit of the air conditioner, according to a frequency of compressor transmission sound generated by rotation of the compressor, a controller controls a rotation direction and a rotation stop position of the stepping motor, and the stepping motor 50 drives the sound attenuation inner tube to slide to a set depth along the sound attenuation main tube 30 through a transmission assembly 60, so as to eliminate the compressor transmission sound of a current frequency.

In the application, the insertion depth of the silencing inner pipe 40 in the silencing main pipe 30 is changed to change the silencing frequency of the silencer, so that the maximum silencing frequency of the silencer can always correspond to the characteristic frequency of the compressor transmission sound, the effect of eliminating the compressor pulsation transmission sound is achieved, the cost of the silencer of the air conditioner is saved, and meanwhile, the welding and installation time of the silencer is also saved.

Specifically, as shown in fig. 6-9; the transmission assembly 60 of the present embodiment includes a connecting rod 61, the connecting rod 61 is a right-angle bending structure, one end of the connecting rod 61 is connected with the output shaft of the motor 50, and the other end of the connecting rod 61 is provided with a clamping portion 62; the outer end part of the annular magnet 63 is fixed on the clamping part 63, the annular magnet 63 is sleeved on the outer peripheral side of the third vertical straight pipe section 23 above the air inlet pipe 32 of the main silencing pipe 30, the inner silencing pipe 40 is made of iron pipe, the exhaust pipe 20 and the main silencing pipe 30 are made of copper pipe, the annular magnet 63 and the inner silencing pipe 40 generate attractive acting force, the annular magnet 63 rises or falls, and the inner silencing pipe 30 also rises or falls;

the stepping motor 50 drives the connecting rod 61 to rotate at one end connected with the connecting rod 61, and the clamping part 62 at the other end of the connecting rod 61 moves upwards or downwards so as to drive the annular magnet 63 to slide up and down, so that the annular magnet 63 attracts the silencing inner pipe 30 to move up and down along the air inlet pipe 32 of the silencing main pipe 30, the insertion depth h of the silencing inner pipe 40 in the silencing inner pipe 30 is changed, and the compressor transmission sounds with different frequencies are eliminated.

Specifically, in this embodiment, as shown in fig. 8 to 9, a vertical transmission gear 51 is disposed on an output shaft of the stepping motor 50, one end of the connecting rod 61 connected to the output shaft of the stepping motor 50 is a first end 611, the first end 611 is provided with a gear groove 612 engaged with the transmission gear 51, the stepping motor 50 drives the transmission gear 51 to rotate in a vertical plane, and the transmission gear 51 drives the first end 611 to rotate. One end of the connecting rod 61 at the clamping part 62 is the second end 612, the clamping part 62 includes two extending plates which are arranged up and down and extend outwards along the length direction of the second end 612 of the connecting rod, the two extending plates define a containing groove 621 capable of containing part of the ring-shaped magnet 63, the height of the containing groove 621 is matched with the thickness of the ring-shaped magnet 63, at least part of the structure of the ring-shaped magnet 63 is located in the containing groove 621, when the clamping part 62 is prevented from driving the ring-shaped magnet 63 to move, the ring-shaped magnet 63 falls off from the containing groove 621, and the silencing effect is influenced.

In order to accurately control the insertion depth of the inner muffling tube 40, the inner muffling tube 40 is initially located such that the entire inner muffling tube 40 is located in the third vertical straight line segment 23 of the exhaust pipe 20, the outlet at the bottom of the inner muffling tube 40 is flush with the inlet of the first reducing section 34, and the inner muffling tube 40 is disposed in the third vertical straight line segment 23, that is, above the main muffling tube 30, so that blockage caused by oil return of the compressor 10 can be avoided. When the air conditioner is turned on in the later period, the sound attenuation inner tube 40 is accurately moved to the set insertion depth h after the transmission audio frequency of the compressor 10 is acquired.

With reference to fig. 8, a mounting seat 52 is disposed on the base of the stepping motor 50, fixing holes are disposed at two ends of the mounting seat 52, and bolts pass through the fixing holes to fix the stepping motor 50 on the end surface of the second cavity 14 of the compartment partition 11, and the mounting position of the stepping motor is close to the top of the compressor 10, so that the stepping motor can drive the ring magnet 63 to move better through the connecting rod 61.

Specifically, in this embodiment, the inner diameters of the inlet pipe 32 and the outlet pipe 33 are smaller than the inner diameter of the main muffler pipe 30, and at least part of the third vertical straight pipe section 23 of the exhaust pipe 20 is located inside the inlet pipe 32. The inner muffler pipe 40 is in clearance fit with the exhaust pipe 20, the inner muffler pipe 40 can move up and down relatively easily in the third vertical straight pipe section 23, and the inner muffler pipe 40 can move along the third vertical straight pipe section 23 relatively easily from the initial position to slide in the main muffler pipe 30 under the action of the ring magnet 63.

When the silencer of the embodiment is used, the air conditioner can comprise: the acquisition module is used for acquiring frequency domain data of noise of the air conditioner; the judging module is used for judging whether the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound or not, and judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound or not when the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound; and the control module is used for controlling the stepping motor according to the maximum value of the transmission loss of the silencer and the characteristic peak value of the compressor transmission sound so as to change the insertion depth of the silencing inner tube when the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound. Further comprising: a processor, a memory, and a control program stored on the memory and executable on the processor.

Meanwhile, the indoor unit is provided with a noise sensor to test a near-field noise signal generated by the indoor unit, so that the obtained noise signal is prevented from being influenced by indoor environmental factors; the signal processing unit processes the air conditioner noise signals collected by the noise sensor into frequency domain digital signals and temporarily stores the frequency domain digital signals. In the present embodiment, a 2127524 type muffler is taken as an example, and as shown in fig. 13, a relation curve between an insertion depth h of a muffler inner pipe and a muffler frequency of the muffler is inputted to a storage unit in advance.

Judging whether the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound or not, comprising the following steps: judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor is an integer, if so, determining that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound, otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is not the compressor transmission sound.

And judging the abnormal data to judge whether the abnormal data is the characteristic data of the compressor transmission sound. The judging unit judges the frequency domain digital signal and compares the peak values of three adjacent points. Determining sharpness of noise corresponding to a current frequency point in frequency domain data of noise generated by an air conditioner, comprising:

ΔH＝B-(A+C)/2

wherein, Δ H is the sharpness of noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner;

b is a decibel value of noise corresponding to a current frequency point in frequency domain data of the noise generated by the air conditioner;

A. and C is the decibel value of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data of the noise generated by the air conditioner.

If the delta H is less than 8dB, the sharpness of the point is not high, and discomfort can not be caused to the comfort of a user; if Δ H > 8dB, it indicates that the sharpness of the point is high at this time, which causes discomfort to the user.

Note the point where Δ H > 8dB and define it as F _Peak(s) . At the moment, the logic unit acquires the current running frequency F of the compressor _{Pressing and pressing} The calculation unit performs the calculation, F _Peak(s) /F _{Pressing and pressing} If the calculation result is an integer, the point is the characteristic peak value of the compressor transmission sound and is determined as the compressor transmission sound; if the calculation result is not an integer, the point is indicated to be caused by other factors, the point is skipped, and the comparison is continued.

When judging whether the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound, the ratio of the characteristic peak value of the compressor transmission sound obtained by calculation to the current operating frequency of the compressor may not be an integer, because a calculation error exists when the characteristic peak value of the compressor transmission sound is determined. Therefore, the ratio needs to be corrected according to a second preset correction value to obtain the integer, that is, the obtained integer is allowed to have a fluctuation value, Δ T is an integer fluctuation value to eliminate a calculation error, and Δ T usually takes a very small value, generally about 0.1.

The compressor transmission sound is generally expressed at 3000Hz or less in the frequency domain according to the characteristics of the compressor transmission sound, and therefore, in order to increase the response speed, only data at 3000Hz or less are analyzed. According to the characteristic peak value of the compressor transmission sound identified, namely F _Peak(s) At this time, the program passes the pressure of the compressor and the internal cavity of the muffler as shown in fig. 6 based on the relationship between the interpolation depth and the muffling frequency of the muffler. The insertion depth h of the muffler inner pipe 40 is adjusted.

According to the characteristic peak value of the current compressor transmission sound, the insertion depth of the inner silencing pipe 40 is determined, then the stepping motor 50 receives an instruction to start working, in the embodiment, the stepping motor 50 rotates clockwise to drive the transmission gear 51 to rotate clockwise, the first end 611 of the connecting rod 61 rotates clockwise by a certain angle, then the second end 612 of the connecting rod 61 moves downwards by a certain distance, the annular magnet 63 also moves downwards along with the second end 612 synchronously, the inner silencing pipe 40 slides downwards along the third vertical straight line section 23 from the initial position to a set h in the insertion depth of the main silencing pipe 30 under the action of the annular magnet 63, and at this time, the main silencing pipe 30 and the inner silencing pipe 40 can eliminate the compressor transmission sound under the frequency. However, when the characteristic peak value of the compressor transmission sound changes, the stepping motor 50 can rotate forward or reverse according to the instruction to change the insertion depth of the muffling inner tube 40, and when the compressor is shut down, the stepping motor returns to the position corresponding to the initial position of the muffling inner tube 40, and the transmission assembly 60 drives the muffling inner tube 40 to return to the initial position. When starting up, the above process is repeated.

In the embodiment, the insertion depth of the inner silencing pipe 40 in the main silencing pipe 30 is changed to change the silencing frequency of the silencer, so that the maximum silencing frequency of the silencer can always correspond to the characteristic frequency of the compressor transmission sound, the effect of eliminating the compressor pulsation transmission sound is achieved, the cost of the silencer of the air conditioner is saved, and meanwhile, the welding and installation time of the silencer is also saved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth" may explicitly or implicitly include one or more of the features.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. An outdoor unit of an air conditioner, comprising:

a housing formed with an accommodating chamber therein;

the compressor is arranged in the accommodating cavity and comprises an exhaust pipe;

the main silencing pipe is internally provided with a cylindrical silencing cavity and comprises an air inlet pipe connected with the exhaust pipe;

the silencing inner pipe is arranged inside the exhaust pipe and the air inlet pipe;

the motor is arranged in the accommodating cavity, is connected with the inner silencing pipe and is used for driving the inner silencing pipe to move in the exhaust pipe and the air inlet pipe;

the motor drives the silencing inner pipe to move, and the silencing inner pipe moves to the set position of the silencing cavity so as to eliminate the transmitted sound of the compressor.

2. The outdoor unit of claim 1, wherein the sound-deadening inner pipe is initially positioned such that the entire sound-deadening inner pipe is positioned in the discharge pipe and such that a bottom of the sound-deadening inner pipe is flush with a top of the sound-deadening main pipe.

3. The outdoor unit of claim 1, further comprising a driving assembly, wherein the motor is connected to the sound-deadening inner pipe through the driving assembly, and the driving assembly comprises:

the connecting rod is of a right-angle bending structure, one end of the connecting rod is connected with an output shaft of the motor, and the other end of the connecting rod is provided with a clamping part;

the annular magnet is sleeved on the outer peripheral side of the exhaust pipe above the air inlet pipe, attractive acting force is generated between the annular magnet and the silencing inner pipe, and the annular magnet is fixed on the clamping part;

the motor drives the connecting rod to rotate at one end connected with the connecting rod, one end of the clamping part of the connecting rod moves upwards or downwards to drive the annular magnet to slide up and down, and the annular magnet attracts the silencing inner pipe to move up and down along the air inlet pipe of the silencing main pipe.

4. The outdoor unit of claim 3, wherein a vertical transmission gear is disposed on the output shaft of the motor, one end of the connecting rod connected to the output shaft of the motor is a first end, the first end is provided with a gear groove engaged with the transmission gear, the motor drives the transmission gear to rotate in a vertical plane, and the transmission gear drives the first end to rotate.

5. An outdoor unit of an air conditioner according to claim 4, wherein the holder defines a receiving groove capable of receiving a part of the ring magnet, and a height of the receiving groove is adapted to a thickness of the ring magnet.

6. An outdoor unit of an air conditioner as set forth in claim 1, wherein the air intake pipe and the air discharge pipe have inner diameters smaller than that of the main muffler pipe, and the air discharge pipe is at least partially disposed in the air intake pipe.

7. The outdoor unit of claim 1, wherein a chamber partition is provided in the receiving chamber, and the chamber partition divides the receiving chamber into a first chamber in which the blower is installed and a second chamber in which the compressor is installed.

8. The outdoor unit of claim 7, wherein the motor is fixed to the end surface of the second chamber, which is located near the top of the compressor, of the chamber partition by bolts.

9. The outdoor unit of claim 3, wherein the sound-deadening inner pipe is an iron pipe, and the sound-deadening inner pipe is in clearance fit with the discharge pipe, and moves up and down in the discharge pipe.

10. The outdoor unit of claim 3, wherein the motor is a stepping motor, and the first end of the connecting rod is rotated clockwise or counterclockwise to raise or lower the ring magnet.

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