WO2020181764A1

WO2020181764A1 - Gas-liquid separator, compressor assembly and air conditioner

Info

Publication number: WO2020181764A1
Application number: PCT/CN2019/110745
Authority: WO
Inventors: 胡余生; 魏会军; 余冰; 王珺; 杨欧翔; 张心爱
Original assignee: 珠海格力电器股份有限公司; 珠海格力节能环保制冷技术研究中心有限公司
Priority date: 2019-03-13
Filing date: 2019-10-12
Publication date: 2020-09-17
Also published as: CN109945559A; EP3879208A4; EP3879208A1; CN109945559B

Abstract

A gas-liquid separator (100), comprising a housing, an outlet pipe (103), and a liquid suction pipe (104). The outlet pipe (103) penetrates from a side wall of the housing to outside of the housing. One end of the liquid suction pipe (104) extends to the bottom of an inner cavity of the gas-liquid separator (100), and the other end of the liquid suction pipe (104) is connected to the outlet pipe (103). Also disclosed are a compressor assembly and an air conditioner. By means of shortening the length of the outlet pipe (103), the first-order resonance frequency of a refrigerant may be increased to prevent the air suction frequency of a compressor from significantly exceeding the first-order resonance frequency of the refrigerant when operating at a high frequency, which thereby facilitates the compressor in generating a suction boosting effect when operating at the high frequency, enhances the air intake efficiency of the compressor, and improves the performance of the compressor.

Description

Gas-liquid separator, compressor assembly and air conditioner

Cross references to related applications

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on March 13, 2019 with the application number 201910188182.2 and the application titled "Gas-Liquid Separator, Compressor Assembly and Air Conditioner", which is hereby introduced in its entirety Reference.

Technical field

This application relates to the technical field of air conditioners, in particular to a gas-liquid separator, a compressor assembly and an air conditioner.

Background technique

In the prior art, there are known compressors that utilize the suction and boosting effect. Because the compressor periodically sucks in gas from the gas-liquid separator, the refrigerant in the gas-liquid separator forms periodic pulsation, and When the pulsation frequency of the refrigerant reaches the suction resonance frequency, the pulsation amplitude of the refrigerant in the gas-liquid separator reaches the maximum. The suction frequency of this type of compressor is equivalent to the suction resonance frequency (the suction frequency of the compressor is generally not Greater than the suction resonance frequency), the pressure wave generated by the resonance of the refrigerant produces a suction boost effect on the suction of the compressor, which in turn increases the amount of refrigerant sucked into the compressor, and enhances the compression performance of the compressor.

The patent application with publication number CN107002655A records the calculation formula of the resonant peak speed (suction resonant frequency) of the compressor that can obtain the suction boost effect, that is, the first-order resonance frequency f of the refrigerant can be calculated by the formula f=C /{4[L+(V/A)]} to find out. In the formula, C is the speed of sound propagation in the refrigerant (m/s), L is the length of the outlet pipe where the refrigerant flows (m), V is the compressor displacement (m ³ ), and A is the outlet pipe’s Cross-sectional area (m ² ).

However, the existing compressors are developing toward higher and higher compression frequencies, that is, the suction frequency of the compressor is getting higher and higher, which causes the suction frequency of the compressor to exceed the suction resonance frequency, resulting in the compressor During suction, the resonance pulsation of the refrigerant cannot be used to achieve the effect of suction and boost, and the suction volume of the compressor is reduced, resulting in deterioration of the performance of the compressor.

It can be seen from the formula of the first-order resonance frequency f of the refrigerant that the first-order refrigerant can be increased by reducing the length L of the outlet pipe, reducing the compressor displacement V or increasing the cross-sectional area A of the outlet pipe Resonance frequency f, where the compressor displacement V and the outlet pipe cross-sectional area A have a small influence on the first-order resonance frequency f of the refrigerant, and the outlet pipe length L has a greater influence on the first-order resonance frequency f of the refrigerant.

However, since the outlet pipe generally passes through the bottom of the gas-liquid separator, reducing the length of the outlet pipe means that the length of the gas-liquid separator should be shortened, and the capacity of the gas-liquid separator should be reduced. It is necessary to weaken the function of the gas-liquid separator, which increases the possibility of the compressor being hit by liquid and affects the performance of the compressor.

In this regard, the patent with publication number CN205349734U describes a technical solution in which the outlet pipe penetrates from the side wall of the gas-liquid separator housing to the outside of the housing, so that only the length of the outlet pipe can be reduced without Shortening the length of the outlet pipe L of the gas-liquid separator does not affect the capacity of the gas-liquid separator. However, this is likely to cause oil accumulation in the area below the outlet pipe of the gas-liquid separator and reduce the lubricating oil in the compressor. This affects the reliability of the compressor's long-term operation; in addition, since the outlet pipe penetrates from the side wall of the gas-liquid separator to the outside of the casing, most of the outlet pipe hangs and extends into the inner cavity of the gas-liquid separator. This makes the outlet pipe prone to greater vibration when the compressor is running, which can easily lead to increased noise, and may even cause damage and fracture of the outlet pipe.

Summary of the invention

The main purpose of this application is to provide a gas-liquid separator that facilitates the improvement of high-frequency compression performance and facilitates the return of lubricating oil.

In order to achieve the above-mentioned main purpose, the gas-liquid separator provided by the present application includes a casing, an outlet pipe and a suction pipe. The outlet pipe extends into the inner cavity of the gas-liquid separator and penetrates from the side wall of the casing to the outside of the casing. , One end of the suction pipe extends to the bottom of the inner cavity of the gas-liquid separator, and the other end of the suction pipe is connected with the outlet pipe.

It can be seen from the above that through the arrangement and structural design of the gas-liquid separator in this application, since the outlet pipe penetrates from the side wall of the gas-liquid separator housing to the outside of the housing, it is beneficial to shorten the length of the outlet pipe on the one hand. It is beneficial to increase the first-order resonance frequency of the refrigerant, and avoid the suction frequency of the compressor during high-frequency operation significantly exceeding the first-order resonance frequency of the refrigerant, so that the first-order resonance frequency of the refrigerant in the gas-liquid separator can be compared with the high The suction frequency of the high-frequency compressor is equivalent, which is convenient for the compressor to produce a suction and boost effect during high-frequency operation, so as to enhance the intake efficiency of the compressor and enhance the performance of the compressor; in addition, the setting of the suction pipe facilitates the The lubricating oil at the bottom of the separator is sucked into the compressor to prevent a large amount of lubricating oil from accumulating at the bottom of the inner cavity of the gas-liquid separator, so that the compressor is continuously lubricated, and the compressor is guaranteed to operate reliably for a long time.

A preferred solution is that the outlet pipe has an inner extension section and an outer section, the inner extension section is located in the inner cavity of the gas-liquid separator, the outer section penetrates from the side wall of the housing to the outside of the housing, and the suction tube is connected to the outer section .

A further solution is that the inner extension section extends in a vertical direction.

A further solution is that the circumscribed section extends in a horizontal direction.

Another preferred solution is that there are two outlet pipes, and at least one outlet pipe penetrates from the side wall of the housing to the outside of the housing.

A further solution is that both outlet pipes pass through the side wall of the housing to the outside of the housing.

Another preferred solution is that the outlet pipe penetrates from the first position of the side wall of the housing to the outside of the housing, and the distance between the first position and the bottom end of the housing is not greater than the distance between the first position and the top end of the housing.

It can be seen from the above that this is beneficial to weaken the vibration of the lower end of the gas-liquid separator and reduce the vibration and noise of the gas-liquid separator.

Another preferred solution is that the gas-liquid separator further includes a fixing member located in the inner cavity of the gas-liquid separator, and the fixing member is fixedly connected to the casing and the outlet pipe.

It can be seen from the above that this helps to reduce the vibration intensity of the outlet pipe.

A further solution is that the outlet pipe penetrates from the first position of the side wall of the housing to the outside of the housing, and the outlet pipe and the fixing member are connected to the second position, along the vertical direction, the first position is separated from the second position by a first distance , The end of the outlet pipe extending to the top of the inner cavity of the gas-liquid separator is separated from the first position by a second distance, and the ratio of the first distance to the second distance is 0.3 to 0.7.

It can be seen from the above that this is beneficial to balance the vibration intensity of the outlet pipe, avoid local vibration of the outlet pipe, and avoid local damage of the outlet pipe due to vibration.

Another preferred solution is that the cross-sectional area of the suction pipe is significantly smaller than the cross-sectional area of the outlet pipe.

It can be seen from the above that this can prevent a large amount of liquid from flowing into the compressor and avoid liquid shock to the compressor. In addition, it also enables the compressor to suck in lubricating oil through the suction pipe for a long time, which helps to ensure the long-term reliable operation of the compressor.

Another object of the present application is to provide a gas-liquid separator that facilitates the improvement of high-frequency compression performance and facilitates the return of lubricating oil.

In order to achieve the other objective mentioned above, the compressor assembly provided in this application includes a compressor and a gas-liquid separator. The gas-liquid separator includes a casing, an outlet pipe and a suction pipe, and the outlet pipe extends into the inner cavity of the gas-liquid separator. , The outlet pipe penetrates from the side wall of the housing to the outside of the housing, one end of the suction pipe extends to the bottom of the inner cavity of the gas-liquid separator, and the other end of the suction pipe is communicated with the fluid inlet of the compressor.

It can be seen from the above that through the arrangement and structural design of the compressor assembly in this application, since the outlet pipe penetrates from the side wall of the casing to the outside of the casing, on the one hand, it is beneficial to shorten the length of the outlet pipe and improve the refrigerant efficiency. The first-order resonance frequency prevents the suction frequency of the compressor from significantly exceeding the first-order resonance frequency of the refrigerant during high-frequency operation, so that the compressor can effectively utilize the suction and boost effect during high-frequency operation to enhance the compressor intake Efficiency, enhance the performance of the compressor; in addition, the setting of the suction pipe facilitates sucking the lubricating oil at the bottom of the gas-liquid separator into the compressor, avoiding a large amount of lubricating oil from accumulating at the bottom of the inner cavity of the gas-liquid separator, so that the compressor can be continuously lubricated , To ensure the long-term reliable operation of the compressor.

Another object of the present application is to provide a compressor assembly with good compressor high-frequency compression performance and convenient lubricating oil return.

In order to achieve the above-mentioned yet another objective, the compressor assembly provided by the present application includes a compressor and the aforementioned gas-liquid separator, and an end of the outlet pipe that passes through the shell is connected to the compressor.

It can be seen from the above that the compressor assembly of the present application adopts the aforementioned gas-liquid separator, so that the suction efficiency of the compressor during high-frequency operation is improved, which is conducive to improving the high-frequency operation performance of the compressor. In addition, it is also conducive to Ensure long-term reliable operation of the compressor.

In order to achieve the above-mentioned yet another objective, the compressor assembly provided by the present application includes a compressor, a connector, and the aforementioned gas-liquid separator. The outlet pipe is fixedly connected to the housing at a position where the outlet pipe passes through. The end outside the casing is fixedly connected to the compressor, and the connecting piece is fixedly connected between the compressor casing and the casing; along the vertical direction, the outlet pipe is fixedly connected to the first height position of the casing, and the fixing piece is fixedly connected At the second height position of the casing, the connecting member is fixedly connected to the third height position of the casing, and the second height position is located between the first height position and the third height position.

It can be seen from the above that the compressor assembly of the present application adopts the aforementioned gas-liquid separator, so that the suction efficiency of the compressor during high-frequency operation is improved, which is beneficial to improve the high-frequency operation performance of the compressor, and also helps to ensure compression The machine runs reliably for a long time; in addition, the second height position is set between the first height position and the third height position, so that the vibration of the extension section is transmitted to the cylinder between the first height position and the third height position through the fixing member. It is beneficial to enhance the connection rigidity of the inner extension section, reduce the vibration intensity of the inner extension section, and reduce the vibration intensity of the gas-liquid separator.

Another object of the present application is to provide an air conditioner with good compressor high frequency compression performance and convenient lubricating oil return.

In order to achieve the above-mentioned yet another objective, the air conditioner provided in the present application includes the aforementioned compressor assembly.

It can be seen from the above that the compressor assembly of the present application adopts the aforementioned compressor, so that the suction efficiency of the compressor during high-frequency operation is improved, which is conducive to improving the high-frequency operation performance of the compressor, and is conducive to improving the high-frequency operation of the air conditioner. Frequency performance, in addition, is also conducive to ensuring the long-term reliable operation of the compressor and the long-term reliable operation of the air conditioner.

Description of the drawings

Figure 1 is a cross-sectional view of a gas-liquid separator in a prior art case;

Figure 2 is a sectional view of a compressor assembly of a prior art case;

3 is a cross-sectional view of the first embodiment of the gas-liquid separator of the present application;

4 is a cross-sectional view of Embodiment 1 of the compressor assembly of the present application;

5 is a cross-sectional view of the second embodiment of the gas-liquid separator of the present application;

6 is a cross-sectional view of the third embodiment of the gas-liquid separator of the present application;

Fig. 7 is a graph showing the vibration of the bottom shell of the gas-liquid separator of the present application as a function of the ratio of H1/H0;

Fig. 8 is a graph showing the vibration of the first outlet pipe of the gas-liquid separator of the present application as a function of the ratio of H3/H2.

The application will be further described below in conjunction with the drawings and embodiments.

detailed description

Example one of gas-liquid separator, compressor assembly and air conditioner:

3 to 4, the air conditioner of this embodiment is equipped with the compressor assembly of this embodiment. The compressor assembly of this embodiment includes a compressor 200 and a gas-liquid separator 100 of this embodiment. The gas-liquid separator 100 includes a housing, a first outlet pipe 103 and a suction pipe 104. The housing includes a cylinder 101 and a bottom housing 105. The bottom housing 105 is fixed to the bottom of the cylinder 101. The first outlet pipe 103 has a vertical The inner extension section 131 extending in the straight direction and the outer section 133 extending in the horizontal direction are connected by a curved section 132 between the inner extension section 131 and the outer section 133. The inner extension section 131 and the curved section 132 are both located in the gas-liquid separator 100 In the inner cavity, the inner extending section 131 extends to the top of the inner cavity of the gas-liquid separator 100, the outer section 133 penetrates from the side wall of the cylinder 101 to the outside of the casing, and the outer section 133 is fixed to the casing of the compressor 200 by welding. The outer section 133 and the cylinder 101 are fixed by welding, one end of the liquid suction tube 104 extends to the bottom of the inner cavity of the gas-liquid separator 100, and the other end of the liquid suction tube 104 is connected to the outer section 133.

Since the outer section 133 penetrates from the side wall of the cylinder 101 to the outside of the housing, the inner extension 131 extends into the inner cavity of the gas-liquid separator 100, causing the inner extension 131 to lose the fixed connection with the cylinder 101, causing the inner The extension 131 lacks fixed positioning, which may cause the inner extension 131 to be broken and damaged due to vibration. Therefore, the fixing member 102 is fixedly connected to the cylinder 101. The fixing member 102 is located in the inner cavity of the gas-liquid separator 100. The fixing member 102 and The inner extension of the first outlet pipe 103 is fixedly connected.

Since the outer section 133 penetrates from the side wall of the cylinder 101 to the outside of the shell, this is beneficial to shorten the length of the first outlet pipe 103 and increase the first-order resonance frequency of the refrigerant in the inner cavity of the gas-liquid separator 100. , To avoid the compressor's suction frequency during high-frequency operation significantly exceeding the first-order resonance frequency of the refrigerant, so that the compressor can effectively use the suction and boosting effect during high-frequency operation to enhance the compressor's intake efficiency and enhance compression In addition, the setting of the suction pipe 104 facilitates sucking the lubricating oil at the bottom of the inner cavity of the gas-liquid separator 100 into the compressor, avoiding a large amount of lubricating oil accumulating at the bottom of the inner cavity of the gas-liquid separator 100, so that the compressor can continue to get Lubrication ensures long-term reliable operation of the compressor.

Specifically, referring to FIG. 4, the cylinder 101 and the casing of the compressor 200 are also fixed by a connecting piece 500. The cylinder 101 and the casing of the compressor 200 are both welded to the connecting piece 500 in the vertical direction, The connecting piece 500 is located above the outer section 133, so that there are two fixed connections between the cylinder 101 and the casing of the compressor 200, which is beneficial to make the fixed connection between the gas-liquid separator 100 and the compressor 100 more stable and reliable.

Along the vertical direction, the outer section 133 is fixedly connected to the first height position of the cylinder body 101, the fixing member 102 is fixedly connected to the second height position of the cylinder body 101, and the connecting member 500 is fixedly connected to the third height position of the cylinder body 101. Since the first height position and the third height position of the cylinder body 101 are fixedly connected to the casing of the compressor 200, the area between the first height position and the third height position of the cylinder body 101 has better resistance. Therefore, the second height position is set between the first height position and the third height position, so that the vibration of the extension section 131 is transmitted to the first height position and the third height position of the cylinder 101 through the fixing member 102 In between, it is beneficial to enhance the connection rigidity of the inner extension 131, reduce the vibration intensity of the inner extension 131, and reduce the vibration intensity of the gas-liquid separator 100.

Optionally, in addition to being welded and fixed, the connecting piece 500 and the cylinder 101 can also be fixedly connected by one or more methods such as clamps and screws. Similarly, the connecting piece 500 and the casing of the compressor 200 can also be fixedly connected. The fixed connection can be made by one or more methods such as clamps and screws.

Optionally, in addition to being connected to the external section 133, the suction pipe 104 may also be directly connected to the fluid inlet of the compressor, and the suction pipe 104 and the first outlet pipe 103 operate separately.

Preferably, the inwardly extending section 131 and the externally extending section 133 are connected by a bending section 132, which is beneficial to avoid stress concentration at the connection between the inwardly extending section 131 and the externally extending section 133, and improve the anti-vibration performance of the first outlet pipe 103.

Specifically, the compressor 200 is a two-cylinder compressor, and the gas-liquid separator 100 also has a second outlet pipe. The first outlet pipe 103 and the second outlet pipe 106 each have an inward section 131 extending in the vertical direction and The circumscribed section 133 extending in the direction.

Preferably, the first outlet pipe 103 and the second outlet pipe 106 are both round pipes.

3, assuming that the total height of the housing of the gas-liquid separator 100 is H0, the distance between the pipe axis of the outer section 133 of the first outlet pipe 103 and the bottom of the bottom shell 105 is H1, and the outer section 133 of the first outlet pipe 103 The distance between the pipe axis of the first outlet pipe 103 and the top end of the inner extension 131 is H2, and the distance between the pipe axis of the outer section 133 of the first outlet pipe 103 and the fixing member 102 is H3.

The top end of the second outlet pipe 106 is flush with the top end of the first outlet pipe 103, the outer section 133 of the second outlet pipe 106 is located below the outer pipe of the first outlet pipe 103, and the pipe axis of the outer section 133 of the second outlet pipe 106 The distance from the pipe axis of the circumscribed section 133 of the first outlet pipe 103 is H4.

Since the outer section 133 penetrates from the side wall of the cylinder 101 to the outside of the casing, the outer section 133 is fixed to the cylinder 101 at the passing position, and the outer section 133 is no longer fixed with the bottom shell 105 of the gas-liquid separator 100, and the gas-liquid separation The bottom shell 105 of the gas-liquid separator 100 is prone to large vibrations. In order to reduce the vibration intensity of the bottom shell 105 of the gas-liquid separator 100, this embodiment is simulated on the Ansys simulation software under different conditions where H1/H0 is between 0.2 and 0.7. The maximum vibration value of the bottom shell 105 of the gas-liquid separator 100 is based on the maximum vibration value of the bottom shell 105 of the gas-liquid separator 100 when H1/H0=0.5 (take H1/H0=0.5 when the gas-liquid separator 100 The relative value of the maximum vibration value b of the bottom shell 105 is 1. When H1/H0 takes other values, the maximum vibration value a of the bottom shell 105 of the gas-liquid separator 100 is divided by H1/H0=0.5 when the gas-liquid separator 100 The maximum vibration value b of the bottom shell 105 is a/b, and the value of a/b is the relative vibration value of the bottom shell 105 of the gas-liquid separator 100 when the corresponding value is H1/H0), and H1/H0 is between 0.2 and Curves of relative vibration values of the bottom shell 105 of the gas-liquid separator 100 under different conditions within the range of 0.7 are shown in FIG. 7.

As shown in Figure 7, when H1/H0=0.4, the vibration of the bottom shell 105 of the gas-liquid separator 100 is the weakest. When H1/H0 is greater than 0.5, the vibration of the bottom shell 105 of the gas-liquid separator 100 increases sharply, thus limiting H1 /H0 is not greater than 0.5, and as the value of H1/H0 decreases, the value of the length L1 of the first outlet pipe 103 will increase accordingly. Therefore, it is more preferable to limit H1/H0 to be between 0.4 and 0.5 In this way, the relationship between the length L1 of the first outlet pipe 103 and the vibration intensity of the bottom shell 105 of the gas-liquid separator 100 can be balanced as much as possible, which is conducive to the use of suction and boosting of the compressor, and improves the performance of the compressor. It is possible to reduce the vibration of the gas-liquid separator 100 and reduce the operating noise of the compressor.

The farther away from the fixed position on the first outlet pipe 103, the more violent the vibration. In order to determine the optimal position of the fixed member 102, this embodiment simulates the top end of the extension section 131 and the bending section 132 on the Ansys simulation software at H3/H2 between 0.1 The maximum vibration value under different conditions within the range of 0.9, and the maximum vibration value of the top of the inner extension 131 when H3/H2=0.7 is used as a reference (take the maximum vibration value d of the top of the inner extension 131 when H3/H2=0.7 The relative value is 1, when H3/H2 is other value, the maximum vibration value of the top end of the extension section 131 or the bending section 132 is c, then c/d is the top end of the extension section 131 or the bending section 132 under the condition of H3/H2 The relative vibration value of H3/H2 is in the range of 0.1 to 0.9. The relative vibration value curve of the top end of the extension section 131 and the bending section 132 under different conditions is shown in Fig. 8.

As shown in Figure 8, with the increase of the ratio of H3/H2, the relative vibration value of the top of the extension section 131 continues to decrease, and in the interval where H3/H2 is less than 0.3, the relative vibration value of the top of the extension section 131 decreases at a faster rate. Fast; with the increase of the H3/H2 ratio, the vibration value of the bending section 132 continues to increase, and the vibration of the bending section 132 increases faster when H3/H2 is greater than 0.7; therefore, H3/H2 is between 0.3 and 0.7 This avoids the sharp increase in the vibration of the top end of the extension section 131 and the sharp increase in the vibration of the bending section 132.

In this embodiment, the parameters of the gas-liquid separator 100 and the compressor 200 are as follows: H0=235mm, H1=80mm, H2=120mm, H3=47mm, H4=32mm, the cross-sectional area of a single pipe A1=201mm ² , The length of an outlet pipe 103 is L1=188mm, the length of the second outlet pipe 106 is L2=252mm, the displacement of a single compression cylinder is V1=22cm ³ , and the sound propagation velocity in the refrigerant C=228m/s. Calculate the suction resonance frequency f1=228/{4[0.188+22/201]}=192s ^-1 according to the parameters of the first outlet pipe 103, and calculate the suction in the gas-liquid separator 100 according to the parameters of the second outlet pipe 106 The resonance frequency f2=228/{4[0.252+22/201]}=158s ^-1 . Therefore, the suction resonance frequency in the gas-liquid separator 100 should be between 158 s ^-1 and 192 s ^-1 , and the suction resonance frequency in the gas-liquid separator 100 is about (192+158)/2=175 s ^-1 .

1 and 2, in the prior art two-cylinder compressor, the gas-liquid separator 300 includes a third outlet pipe 303 and a fourth outlet pipe 306, the third outlet pipe 303 and the fourth outlet pipe 306 The bottom shell of the liquid separator 300 penetrates out of the shell, and is then fixedly connected to the casing of the compressor 400. The total height of the shell of the gas-liquid separator 300 is set to H5, and the pipe axis of the outer section 333 of the third outlet pipe 303 The distance from the bottom of the bottom shell is H6, the distance between the pipe axis of the outer section 333 of the third outlet pipe 303 and the top end of the inward section 331 is H7, the pipe axis of the outer section 333 of the third outlet pipe 303 and the fixing member 102 The distance is H8.

The top end of the fourth outlet pipe 306 is flush with the top end of the third outlet pipe 303, the outer section of the fourth outlet pipe 306 is located below the outer section 333 of the third outlet pipe 303, and the pipe axis of the outer section of the fourth outlet pipe 306 is aligned with The pipe axis of the circumscribed section 333 of the third outlet pipe 303 is H9 apart.

In the prior art, the parameters of the gas-liquid separator 300 and the compressor are as follows: H5=180mm, H6=55.5mm, H7=200mm, H8=152mm, H9=32mm, the cross-sectional area of a single pipe A2=201mm ² , The length of the three outlet pipe 303 is L3=268mm, the length of the fourth outlet pipe 306 is L4=332, the displacement of a single compression cylinder is V2=22cm ³ , and the sound propagation speed in the refrigerant C=228m/s. Calculate the suction resonance frequency f3=228/{4[0.268+22/201]}=151s ^-1 according to the parameters of the third outlet pipe 303, and calculate the suction in the gas-liquid separator 300 according to the parameters of the fourth outlet pipe 306 Resonance frequency f4=228/{4[0.332+22/201]}=129s ^-1 . Therefore, the suction resonance frequency in the gas-liquid separator 300 should be between 129 s ^-1 and 151 s ^-1 , and the suction resonance frequency in the gas-liquid separator 300 is about (129+151)/2=140 s ^-1 .

If the compressor is running at a suction frequency of 180Hz at this time, the following data can be obtained through testing:

To	本实施例方案Scheme of this embodiment	现有技术案例Existing technology case
气液分离器有效容积(cc)Effective volume of gas-liquid separator (cc)	860860	640640
吸气共振频率f(s ^-1) Inspiratory resonance frequency f(s ^-1 )	介于158至192之间Between 158 and 192	介于129至151之间Between 129 and 151
压缩机容积效率(％)Compressor volumetric efficiency (%)	114.7114.7	93.293.2
气液分离器100振动(m/s ²) 100 vibration of gas-liquid separator (m/s ² )	24.124.1	37.737.7
噪声(dB)Noise (dB)	78.378.3	81.581.5

It can be seen from the above table that the technical solution of this embodiment is compared with the solution of the prior art case, the effective volume of the gas-liquid separator 100 of this technical solution embodiment is significantly larger than that of the gas-liquid separator 300 of the prior art case Effective volume, the volumetric efficiency of the compressor is significantly improved, and the vibration and noise of the gas-liquid separator 100 of the technical solution of this embodiment are significantly weaker than those of the gas-liquid separator 300 in the prior art.

Second embodiment of gas-liquid separator, compressor assembly and air conditioner:

As shown in Figure 5, the first outlet pipe 103 penetrates from the side wall of the cylinder 101 to the outside of the shell, and the second outlet pipe 106 penetrates from the bottom shell 105 to the outside of the shell, which can shorten the first outlet pipe to a certain extent. The lengths of 103 and the second outlet pipe 103 increase the suction resonance frequency in the inner cavity of the gas-liquid separator 100.

The rest of the second embodiment of the gas-liquid separator, compressor assembly and air conditioner is the same as the first embodiment of the gas-liquid separator, compressor assembly and air conditioner.

Embodiment three of gas-liquid separator, compressor assembly and air conditioner:

As shown in FIG. 6, in this embodiment, the gas-liquid separator 100 has only the first outlet pipe 103, and the gas-liquid separator 100 of this embodiment is used for a single-cylinder compressor.

The rest of the third embodiment of the gas-liquid separator, compressor assembly and air conditioner is the same as the first embodiment of the gas-liquid separator, compressor assembly and air conditioner.

Finally, it should be emphasized that the above descriptions are only preferred embodiments of this application, and are not intended to limit this application. For those skilled in the art, this application can have various changes and modifications. Within the principle of sum, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of this application.

Claims

A gas-liquid separator, comprising a shell and an outlet pipe, is characterized in that:

The outlet pipe extends into the inner cavity of the gas-liquid separator and penetrates from the side wall of the casing to the outside of the casing. The gas-liquid separator further includes a liquid suction tube. One end of the tube extends to the bottom of the inner cavity of the gas-liquid separator, and the other end of the liquid suction tube is connected with the outlet tube.
The gas-liquid separator according to claim 1, characterized in that:

The outlet pipe has an inner extension section and a circumscribed section, the inner extension section is located in the inner cavity of the gas-liquid separator, and the outer section extends from the side wall of the housing to the outside of the housing, so The pipette is connected with the external section.
The gas-liquid separator according to claim 2, characterized in that:

The inner extension section extends in the vertical direction.
The gas-liquid separator according to claim 2, characterized in that:

The circumscribed section extends in the horizontal direction.
The gas-liquid separator according to any one of claims 1 to 4, characterized in that:

There are two outlet pipes, and at least one outlet pipe passes through the side wall of the housing to the outside of the housing.
The gas-liquid separator according to claim 5, wherein:

The two outlet pipes both pass through the side wall of the casing to the outside of the casing.
The gas-liquid separator according to any one of claims 1 to 4, characterized in that:

The outlet pipe penetrates from the first position of the side wall of the housing to the outside of the housing, and the distance between the first position and the bottom end of the housing is not greater than the first position and the top end of the housing the distance.
The gas-liquid separator according to any one of claims 1 to 4, characterized in that:

The gas-liquid separator further includes a fixing member located in the inner cavity of the gas-liquid separator, and the fixing member is fixedly connected to the housing and the outlet pipe.
The gas-liquid separator according to claim 8, characterized in that:

The outlet pipe penetrates from the first position of the side wall of the housing to the outside of the housing, and the outlet pipe and the fixing member are connected to a second position, in the vertical direction, the first position is connected to The second position is separated by a first distance, the end of the outlet pipe extending to the top of the inner cavity of the gas-liquid separator is separated from the first position by a second distance, and the first distance is The ratio of distances is 0.3 to 0.7.
A compressor assembly including a compressor, characterized in that:

It also includes a gas-liquid separator, including a housing, an outlet pipe, and a suction pipe. The outlet pipe extends into the inner cavity of the gas-liquid separator, and the outlet pipe extends from the side wall of the housing to Outside the casing, one end of the liquid suction pipe extends to the bottom of the inner cavity of the gas-liquid separator, and the other end of the liquid suction pipe is in communication with the fluid inlet of the compressor.
A compressor assembly including a compressor, characterized in that:

It also includes the gas-liquid separator according to any one of claims 1 to 7, wherein the end of the outlet pipe that penetrates out of the casing is connected to the compressor.
A compressor assembly including a compressor, characterized in that:

It also includes a connecting piece and the gas-liquid separator according to claim 8 or 9, the outlet pipe is fixedly connected to the housing at a position where it passes out of the housing, and the outlet pipe passes out of the housing. One end outside the body is fixedly connected to the compressor, and the connecting piece is fixedly connected between the casing of the compressor and the casing;

Along the vertical direction, the outlet pipe is fixedly connected to the first height position of the housing, the fixing member is fixedly connected to the second height position of the housing, and the connecting member is fixedly connected to the housing The second height position is located between the first height position and the third height position.
An air conditioner characterized by:

Including the compressor assembly of claim 11.