Gas-liquid separation device and air conditioning system

Abstract

The invention discloses a gas-liquid separation device and an air conditioning system.The gas-liquid separation device comprises two baffles and a liquid baffle, the side walls of the baffles are obliquely arranged to form a containing cavity, the liquid baffle is arranged in the containing cavity and divides the containing cavity into a first cavity body and a second cavity body, the first cavity body is used for introducing gas-liquid two-phase refrigerants, and the second cavity body is used for introducing gas-liquid two-phase refrigerants; and the first chamber is used for separating the refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant, and the second chamber is used for introducing and discharging the gas-phase refrigerant separated by the first chamber. Compared with the prior art, the gas-liquid separation process is carried out in the gas-liquid separation device, it can be guaranteed that the gas-liquid separation effect is not affected when the pipe distribution area of the flooded evaporator is below the assembly height of the gas-liquid separation device, and the height of the pipe distribution area can be allowed to exceed the center line of a shell of the flooded evaporator; and more evaporation pipes can be arranged, so that the energy efficiency and the heat exchange efficiency of the unit are improved on the premise of not changing the boundary dimension specification of the flooded evaporator.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioners, and particularly relates to a gas-liquid separation device and an air conditioning system. BACKGROUND

[0002] The suction liquid-carrying phenomenon of the flooded evaporator can cause the decrease of the compressor discharge superheat, that is, part of the energy of the compressor is converted into the latent heat of vaporization of the liquid refrigerant, which reduces the energy efficiency of the compressor, and the suction liquid-carrying phenomenon can also cause the "liquid impact" on the blades, slowly corrode the high-speed rotating blades, and affect the reliability and stability of the air conditioning system and the compressor. Therefore, the internal part of the flooded evaporator is usually provided with a filter screen and a liquid blocking plate and the like to alleviate the suction liquid-carrying phenomenon, but since the liquid level of the refrigerant is generally required to cover all the evaporation tubes to avoid "dry burning" of the evaporation tubes and cause low heat exchange efficiency, the tube arrangement area of the flooded evaporator needs to be arranged as much as possible below the center line of the shell and as much as possible in the lower area of the cylinder to ensure that there is enough gas-liquid separation space above the tube arrangement area, which limits the number of evaporation tubes. Once the performance design requirement of the air conditioning system is improved, more evaporation tubes can only be arranged by increasing the size of the cylinder of the flooded evaporator, which increases the cost and the size of the air conditioning system. Therefore, how to design a gas-liquid separation device and an air conditioning system capable of improving the energy efficiency and heat exchange efficiency without changing the size of the flooded evaporator is a technical problem to be solved in the industry. SUMMARY

[0003] In view of the problem of the suction liquid-carrying phenomenon of the flooded evaporator in the prior art, the present application provides a gas-liquid separation device and an air conditioning system.

[0004] The technical scheme of the present application is to provide a gas-liquid separation device, which comprises a baffle 1 composed of two side walls 101 inclinedly arranged to form a containing cavity 102, and a liquid blocking plate 2 arranged in the containing cavity 102 and separating the containing cavity 102 into a first cavity 103 and a second cavity 104, the first cavity 103 is used for introducing gas-liquid two-phase refrigerant and separating it into gas-phase refrigerant and liquid-phase refrigerant, and the second cavity 104 is used for introducing and discharging the gas-phase refrigerant separated by the first cavity 103.

[0005] Further, the first cavity 103 is sequentially provided with an air inlet cavity 105, a separation cavity 106 and a liquid collecting cavity 107 along the arrangement direction of the side wall 101; The air inlet cavity 105 is used for introducing gas-liquid two-phase refrigerant; The separation cavity 106 is used for separating the gas-liquid two-phase refrigerant into gas-phase refrigerant and liquid-phase refrigerant; The liquid collection cavity 107 is used to introduce the liquid phase refrigerant separated by the separation cavity 106.

[0006] Further, a rectangular groove 108 is arranged on the top of the side wall 101 of the portion of the first chamber 103 where the baffle 1 is located, and a first filter screen 3 is arranged on the rectangular groove 108. The baffle 1 is arranged on the top of the inside of the flooded evaporator, and the space between the rectangular groove 108, the first filter screen 3, and the inner wall of the top of the flooded evaporator forms the air inlet cavity 105.

[0007] Further, a gas equalization plate 4 is arranged below the first filter screen 3, and the gas equalization plate 4 and both sides of the first filter screen 3 are attached to the side wall of the baffle 1. The space between the side wall of the baffle 1, the liquid blocking plate 2, the first filter screen 3, and the gas equalization plate 4 forms the separation cavity 106.

[0008] Further, the gas equalization plate 4 is in the shape of an inverted V, a plurality of gas equalization holes 401 for passing the gas phase refrigerant are arranged on the gas equalization plate 4, and a plurality of first flow equalization grooves 402 for passing the liquid phase refrigerant are arranged on both sides of the gas equalization plate 4 where the side wall of the baffle 1 is attached.

[0009] Further, a gas blocking plate 5 is arranged below the gas equalization plate 4, the baffle 1 is in the shape of a V, and the gas blocking plate 5 and the space at the bottom of the baffle 1 form the liquid collection cavity 107. The gas blocking plate 5 is in the shape of an inverted V, and a plurality of second flow equalization grooves 501 for passing the liquid phase refrigerant are arranged on both sides of the gas blocking plate 5 where the side wall of the baffle 1 is attached. The liquid phase refrigerant passes through the first flow equalization grooves 402 and the second flow equalization grooves 501 in the separation cavity 106 in sequence and enters the liquid collection cavity 107.

[0010] Further, a gap 201 is arranged at the bottom of the liquid blocking plate 2 to accommodate the gas blocking plate 5, and a plurality of liquid blocking holes 202 are arranged above the gap 201 to accommodate the passage of the gas phase refrigerant. The gas phase refrigerant passes through the gas equalization holes 401 and the liquid blocking holes 202 in the separation cavity 106 in sequence and enters the second chamber 104.

[0011] Further, a second filter screen 6 is arranged in the second chamber 104, and the arrangement height of the second filter screen 6 is higher than the arrangement height of the liquid blocking holes 202. A cover plate 7 is arranged on the top of the second chamber 104, and the two sides of the cover plate 7 are respectively attached to the top of the part of the baffle 1 located in the second chamber 104, and the space between the side wall of the baffle 1 and the second filter screen 6 and the cover plate 7 forms an air outlet chamber 109; An air outlet pipe 701 for discharging the gas-phase refrigerant is arranged on the cover plate 7.

[0012] Further, an injection return pipe 8 for introducing the liquid-phase refrigerant into the bottom of the flooded evaporator is arranged on the bottom of the liquid collecting chamber 107. The injection return pipe 8 at least has a jet pipe 801 communicating with the bottom of the liquid collecting chamber 107, an introduction pipe 802 communicating with the condenser, and an outlet pipe 803 communicating the jet pipe 801 and the introduction pipe 802, and the other side of the outlet pipe 803 is connected to the bottom of the flooded evaporator.

[0013] The application further provides an air conditioning system having the above-mentioned gas-liquid separation device and the flooded evaporator.

[0014] Compared with the prior art, the application has at least the following beneficial effects: 1. The gas-liquid separation device has an air inlet chamber, a separation chamber, a liquid collecting chamber and an air outlet chamber, can introduce the gas-liquid two-phase refrigerant, separate it into the gas-phase refrigerant and the liquid-phase refrigerant, and finally discharge the gas-phase refrigerant through the air outlet chamber, can avoid the suction liquid carrying phenomenon of the flooded evaporator, and improve the heat exchange efficiency of the flooded evaporator and reduce the failure probability of the compressor. 2. The gas-liquid separation process of the application is carried out in the gas-liquid separation device, can ensure that the pipe arrangement area of the flooded evaporator below the assembly height of the gas-liquid separation device does not affect the gas-liquid separation effect, can allow the pipe arrangement area height to exceed the center line of the shell of the flooded evaporator, can arrange more evaporation pipes to improve the unit energy efficiency and heat exchange efficiency under the premise of not changing the external size specifications of the flooded evaporator. 3. The gas-liquid separation device of the application is provided with the injection return pipe on one side of the bottom of the liquid collecting chamber, which can return the liquid-phase refrigerant at the bottom of the liquid collecting chamber to the bottom of the flooded evaporator by the injection method, greatly reduces the probability of secondary entrainment of the liquid refrigerant in the gas-liquid separation device, effectively avoids the suction liquid carrying phenomenon, and the separated liquid refrigerant is returned to the bottom of the flooded evaporator for heat exchange and evaporation again, thereby improving the heat exchange processing capacity of the flooded evaporator. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0016] Figure 1 The installation schematic diagram of the gas-liquid separation device in the present application in the first perspective view; Figure 2 The installation schematic diagram of the gas-liquid separation device in the present application in the second perspective view; Figure 3 The overall structure schematic diagram of the gas-liquid separation device in the present application; Figure 4 The sectional view of the gas-liquid separation device in the present application in the first perspective view; Figure 5 The sectional view of the gas-liquid separation device in the present application in the second perspective view; Figure 6 The sectional view of the gas-liquid separation device in the present application in the third perspective view; Figure 7 The exploded schematic diagram of the gas-liquid separation device in the present application; Figure 8 The structure schematic diagram of the liquid baffle of the gas-liquid separation device in the present application; Figure 9 The structure schematic diagram of the gas distribution plate of the gas-liquid separation device in the present application; Figure 10 The structure schematic diagram of the gas baffle of the gas-liquid separation device in the present application; Figure 11 The structure schematic diagram of the baffle of the gas-liquid separation device in the present application; Wherein, 1 is the baffle, 101 is the side wall, 102 is the accommodating cavity, 103 is the first chamber, 104 is the second chamber, 105 is the air inlet cavity, 106 is the separation cavity, 107 is the liquid collecting cavity, 108 is the rectangular groove, and 109 is the air outlet cavity; 2 is the liquid baffle, 201 is the notch, and 202 is the liquid blocking hole; 3 is the first filter screen; 4 is the gas distribution plate, 401 is the gas distribution hole, and 402 is the first flow distribution groove; 5 is the gas baffle, and 501 is the second flow distribution groove; 6 is the second filter screen; 7 is the sealing plate, and 701 is the air outlet pipe; 8 is the ejector return pipe, 801 is the jet pipe, 802 is the introduction pipe, 803 is the outlet pipe, and 804 is the ejector; 9 is the first side plate; 10 is a second side plate; 11 is a flooded evaporator; 12 is a heat exchange pipe; 13 is a liquid inlet pipe; 14 is a liquid outlet pipe. DETAILED DESCRIPTION

[0017] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not intended to limit the present application.

[0018] Therefore, one feature indicated in the specification will be used to explain one feature of one embodiment of the present application, and it is not implied that each embodiment of the present application must have the explained feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations that are not explicitly described. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0019] The principles and structures of the present application will be described in detail below in combination with the drawings and examples.

[0020] Therefore, the inside of the flooded evaporator is generally relieved from the liquid-carrying phenomenon of suction gas by setting devices such as filter screens and liquid baffle plates. However, since the liquid level of the refrigerant is generally required to cover all the evaporating pipes to avoid "dry burning" of the evaporating pipes, which leads to low heat exchange efficiency, it is necessary to arrange the pipe arrangement area of the flooded evaporator below the center line of the shell and as much as possible in the lower area of the cylinder to ensure that there is enough gas-liquid separation space above the pipe arrangement area, which limits the number of evaporating pipes. Once the performance design requirement of the air conditioning system is improved, more evaporating pipes can only be arranged by increasing the size of the cylinder of the flooded evaporator, which leads to an increase in the cost and size of the air conditioning system.

[0021] In view of the above problems, the present application proposes a gas-liquid separation device, please see Figure 3 and Figure 11 which comprises a baffle plate 1 composed of two inclined side walls 101 to form a containing cavity 102, and a liquid baffle plate 2 arranged in the containing cavity 102 and separating the containing cavity 102 into a first chamber 103 and a second chamber 104, the first chamber 103 is used to introduce gas-liquid two-phase refrigerant and separate it into gas-phase refrigerant and liquid-phase refrigerant, and the second chamber 104 is used to introduce and discharge the gas-phase refrigerant separated by the first chamber 103.

[0022] Here, the first chamber 103 and the second chamber 104 both belong to a part of the containing cavity 102, belong to the internal structure of the gas-liquid separation device, the first chamber 103 can introduce the gas-liquid two-phase refrigerant and separate it into the gas-phase refrigerant and the liquid-phase refrigerant, that is, the gas-liquid separation process in the application is carried out inside the gas-liquid separation device.

[0023] Based on the setting, the application can achieve the beneficial effects as described above: It can be ensured that the pipe arrangement area of the flooded evaporator does not affect the gas-liquid separation effect below the assembly height of the gas-liquid separation device, can allow the pipe arrangement area height to exceed the center line of the shell of the flooded evaporator, can arrange more evaporation pipes to meet the requirements of improving the unit energy efficiency and heat exchange efficiency without changing the appearance size specifications of the flooded evaporator.

[0024] Please refer to Figure 4 , the application is sequentially provided with the gas inlet cavity 105, the separation cavity 106, and the liquid collecting cavity 107 along the setting direction of the side wall 101 in the first chamber 103; The gas inlet cavity 105 is used for introducing the gas-liquid two-phase refrigerant; The separation cavity 106 is used for separating the gas-liquid two-phase refrigerant into the gas-phase refrigerant and the liquid-phase refrigerant; The liquid collecting cavity 107 is used for introducing the liquid-phase refrigerant separated by the separation cavity 106.

[0025] In addition, the application is provided with the gas outlet cavity 109 in the second chamber 104, which is used for discharging the gas-phase refrigerant; Through the cooperation of the above four cavities, the application can introduce the gas-liquid two-phase refrigerant and separate it into the gas-phase refrigerant and the liquid-phase refrigerant, and finally discharge the gas-phase refrigerant through the gas outlet cavity 109, which can avoid the liquid entrainment phenomenon of the flooded evaporator, improve the heat exchange efficiency of the flooded evaporator, and reduce the failure probability of the compressor.

[0026] Please refer to Figure 1 , Figure 7 and Figure 11 , the rectangular groove 108 is provided on the top of the side wall 101 of the part of the baffle 1 located in the first chamber 103, and the first filter screen 3 is provided on the rectangular groove 108. The baffle 1 is arranged on the top inside the flooded evaporator 11, and the space between the rectangular groove 108, the first filter screen 3, and the inner wall of the top of the flooded evaporator 11 forms the gas inlet cavity 105.

[0027] From the attached Figure 11It can be seen that due to the arrangement of the rectangular groove 108, the height of the top of the baffle 1 at the first chamber 103 is lower than the height of the top of the baffle 1 at the second chamber 104, the present application sets the baffle 1 at the top inside the flooded evaporator 11, the outside of the second chamber 104 is attached to the top shell inside the flooded evaporator 11, and the sealing of the second chamber 104 is ensured, and because the height of the top of the baffle 1 at the first chamber 103 is lower than the height of the top of the baffle 1 at the second chamber 104, there is a gap between the first chamber 103 and the top shell inside the flooded evaporator 11, which can be used to introduce gas-liquid two-phase refrigerant, that is, to form the gas inlet chamber 105 described above.

[0028] That is, the present application can form the gas inlet chamber 105 in the present application through the improvement of the above structure, and introduce gas-liquid two-phase refrigerant into the present application.

[0029] Please refer to Figure 4 , Figure 6 and Figure 7 , the present application is provided below the first filter screen 3 with a gas equalization plate 4, the gas equalization plate 4 and the two sides of the first filter screen 3 are attached to the side wall of the baffle 1. The space between the side wall of the baffle 1 and the liquid retaining plate 2, the first filter screen 3 and the gas equalization plate 4 forms a separation chamber 106.

[0030] As can be seen from this part, the gas inlet chamber 105 and the separation chamber 106 are separated by the first filter screen 3, based on this setting, the gas-liquid two-phase refrigerant in the gas inlet chamber 105 needs to be adsorbed and filtered by the first filter screen 3 before entering the separation chamber 106, which can be first separated. The separated liquid refrigerant will drop onto the gas equalization plate 4 at the lower part of the separation chamber 106, and the second gas-liquid separation will be carried out; That is, based on the above setting, the present application can form the separation chamber 106 in the present application to separate the gas-liquid two-phase refrigerant, and at the same time, through the above-mentioned first filter screen 3 and the gas equalization plate 4, the present application can at least carry out twice gas-liquid separation, greatly improving the gas-liquid separation efficiency in the present application.

[0031] Please refer to Figure 9 , the shape of the gas equalization plate 4 in the present application is inverted V-shaped, a plurality of gas equalization holes 401 for passing gas-phase refrigerant are provided on the gas equalization plate 4, and a plurality of first flow equalization grooves 402 for passing liquid-phase refrigerant are provided on the two sides of the gas equalization plate 4 which are attached to the side wall of the baffle 1.

[0032] As described above, the liquid refrigerant separated by the first filter screen 3 will drop on the gas distribution plate 4 at the lower part of the separation cavity 106, in order to better discharge the part of the liquid refrigerant and gather it into the bottom liquid collecting cavity 106, the present application sets the shape of the gas distribution plate 4 as inverted V-shaped, and simultaneously, the two sides of the gas distribution plate 4 are respectively attached to the side wall 101 of the baffle 1, since the side wall of the inverted V-shaped gas distribution plate 4 is a slope, therefore it can play a drainage effect, and can make the liquid refrigerant dropped on the gas distribution plate 4 quickly flow into the inner wall of the baffle 1, and then flow to the lower liquid collecting cavity 106 along the inner wall of the baffle 1; The first flow uniformizing groove 402 is uniformly arranged at the two sides of the gas distribution plate 4, which can make the liquid droplets timely and orderly gather to the bottom, and avoid the risk of being secondarily entrained; The gas phase refrigerant is collided and separated again by the gas distribution plate 4, the gas distribution plate 4 is provided with a plurality of gas distribution holes 401 uniformly arranged on the surface, which can effectively produce the effects of gas distribution and liquid blocking; That is, through the improvement of the structure of the above-mentioned gas distribution plate 4, the present application can achieve the effects of quick drainage, avoiding secondary entrainment, effective gas distribution and liquid blocking.

[0033] Please refer to Figure 4 , Figure 6 and Figure 10 , the present application is provided with the gas blocking plate 5 below the gas distribution plate 4, the shape of the baffle 1 is V-shaped, and the gas blocking plate 5 and the bottom space of the baffle 1 form the liquid collecting cavity 107; The shape of the gas blocking plate 5 is inverted V-shaped, and a plurality of second flow uniformizing grooves 501 for passing the liquid phase refrigerant are arranged at the side wall of the baffle 1 attached to the two sides of the gas blocking plate 5; The liquid phase refrigerant sequentially passes the first flow uniformizing groove 402 and the second flow uniformizing groove 501 from the separation cavity 106 into the liquid collecting cavity 107.

[0034] From the attached Figure 10 It can be seen that the structure of the gas blocking plate 5 is similar to that of the gas distribution plate 4, but the position of the gas blocking plate 5 is closer to the bottom of the baffle 1, so the opening distance between the inverted V-shaped gas blocking plate 5 is smaller, since the inverted V-shaped gas blocking plate 5 can form a quadrilateral cavity with the V-shaped part at the bottom of the baffle 1, that is, the liquid collecting cavity 107 in the foregoing; The shape of the gas blocking plate 5 is set as inverted V-shaped, which has the same effect as the gas distribution plate 4, and is used to achieve the purpose of quick drainage, and similarly, a plurality of second flow uniformizing grooves 501 for passing the liquid phase refrigerant are arranged at the side wall of the baffle 1 attached to the two sides of the gas blocking plate 5, which is used to make the liquid droplets timely and orderly gather to the bottom of the liquid collecting cavity 107, and avoid the risk of being secondarily entrained; That is, the part is provided on the baffle plate 5, and no gas equalizing hole 401 is provided on the baffle plate 5 because the baffle plate 5 needs to block the gaseous refrigerant to ensure that mainly liquid refrigerant flows into the lower liquid collecting cavity 107, that is, the present application can obtain the liquid refrigerant separated by the separation cavity 106, and can accelerate the convergence of the liquid refrigerant, thereby avoiding the risk of secondary entrainment.

[0035] Please refer to Figures 4 to 8 The present application is provided with a gap 201 capable of accommodating the baffle plate 5 at the bottom of the liquid baffle plate 2, and a plurality of liquid blocking holes 202 capable of accommodating the gaseous refrigerant are provided above the gap 201. The gaseous refrigerant in the separation cavity 106 enters the second cavity 104 in sequence through the gas equalizing hole 401 and the liquid blocking hole 202.

[0036] As described above, the space formed between the baffle plate 1 and the baffle plate 2 below the baffle plate 5 is the liquid collecting cavity 107, and the bottom of the baffle plate 1 is V-shaped, which is not easy to be completely separated by the liquid baffle plate 2, therefore, the present application directly provides a gap 201 at the bottom of the liquid baffle plate 2, so that the baffle plate 5 can communicate the first cavity 103 and the second cavity 104, and the space formed at the bottom of the baffle plate 1 is all the above-mentioned liquid collecting cavity 107, which can increase the storage space of the liquid refrigerant in the present application. In addition, from the attached Figure 4 As can be clearly seen, there is a part of space between the bottom of the separation cavity 106 and the top of the liquid collecting cavity 107, which is the space part between the gas equalizing plate 4 and the baffle plate 5, and the part mainly contains the gaseous refrigerant and the liquid refrigerant separated by the separation cavity 106, and the liquid refrigerant can enter the lower liquid collecting cavity 107 through the baffle plate 5, so the gaseous refrigerant still needs to be drained. As described above, the gaseous refrigerant needs to enter the gas outlet cavity 109 in the second cavity 104, and the first cavity 103 and the second cavity 104 are separated by the liquid baffle plate 2, therefore, in order to ensure that the gaseous refrigerant can smoothly enter the second cavity 104, the present application is provided with a plurality of liquid blocking holes 202 capable of accommodating the gaseous refrigerant above the gap 201, and since the gap 201 is used to pass through the baffle plate 5, the space part between the gas equalizing plate 4 and the baffle plate 5 above the gap 201 is provided with the liquid blocking hole 202, which can ensure that the gaseous refrigerant can smoothly enter the second cavity 104. The specific operation logic is that because the volume of the separation cavity 106 is large, the gas-liquid two-phase refrigerant can be subjected to space gravity sedimentation in the separation cavity 106: the gaseous refrigerant continues to be driven by the low pressure of the gas outlet cavity 109, and is again collided and separated by the liquid blocking hole 202 after the baffle plate 2, and then enters the gas outlet cavity 109 in the second cavity 104 after the gas equalizing and liquid blocking actions. That is, the present application can perform third gas-liquid separation, achieve the functions of gas equalization and liquid blocking, and introduce the gas-phase refrigerant into the gas outlet 109, thereby avoiding the suction liquid entrainment phenomenon of the flooded evaporator 11.

[0037] Please refer to Figure 4 , Figure 5 and Figure 7 , the present application is provided with a second filter screen 6 in the second chamber 104, and the height of the second filter screen 6 is higher than the height of the liquid blocking hole 202; The top of the second chamber 104 is provided with a sealing plate 7, and the two sides of the sealing plate 7 are respectively attached to the top of the part of the baffle 1 located in the second chamber 104, and the space between the side wall of the baffle 1, the second filter screen 6 and the sealing plate 7 forms the gas outlet chamber 109; The sealing plate 7 is provided with a gas outlet pipe 701 for discharging the gas-phase refrigerant.

[0038] This part is the structure in the second chamber 104, and the purpose of setting the second filter screen 6 is to perform fourth gas-liquid separation, to effectively intercept the small amount of liquid droplets entrained in the gas-phase refrigerant again, improve the gas-liquid separation efficiency, and ensure that there is no liquid-phase refrigerant component in the gas-phase refrigerant in the gas outlet chamber 109, thereby effectively avoiding the suction liquid entrainment phenomenon; The height of the second filter screen 6 is set to be higher than the height of the liquid blocking hole 202, which is to avoid the gas-phase refrigerant from directly entering the gas outlet chamber 109 after passing through the liquid blocking hole 202, and to ensure that the gas-phase refrigerant entering the second chamber 104 can be separated again, thereby ensuring the gas-liquid separation efficiency; The purpose of setting the above-mentioned sealing plate 7 is to ensure the sealing of the gas outlet chamber 109, and the gas outlet pipe 107 is set to smoothly discharge the above-mentioned gas-phase refrigerant.

[0039] That is, the present application can effectively intercept again, improve the gas-liquid separation efficiency, and ensure that there is no liquid-phase refrigerant component in the gas-phase refrigerant in the gas outlet chamber 109, thereby effectively avoiding the suction liquid entrainment phenomenon.

[0040] Please refer to Figure 1 and Figure 2 , the present application is provided with an injection return pipe 8 at the bottom of the liquid collecting chamber 107 for introducing the liquid-phase refrigerant into the bottom of the flooded evaporator 11; The injection return pipe 8 at least has a jet pipe 801 communicating with the bottom of the liquid collecting chamber 107, an introduction pipe 802 communicating with the condenser, and an outlet pipe 803 communicating the jet pipe 801 and the introduction pipe 802, and the other side of the outlet pipe 803 is connected to the bottom of the flooded evaporator 11.

[0041] Please refer to Figure 1The ejector 804 is arranged on the ejector return pipe 8 in the application, which is used to provide power for introducing the liquid-phase refrigerant from the liquid collecting cavity 107 and the condenser and conveying the liquid-phase refrigerant to the bottom of the flooded evaporator 11.

[0042] Please refer to Figure 3 and Figure 7 As described above, the baffle 1 is in V-shaped, and the first baffle 9 and the second baffle 10 are arranged on the two sides of the baffle 1 respectively, so that the space formed in the baffle 1 is a closed space.

[0043] Based on the arrangement of the gas-liquid separation device, the flow rate of the refrigerant in the three cavities (i.e. the inlet cavity 105, the separation cavity 106 and the outlet cavity 107) is not less than the flow rate of the refrigerant in the outlet pipe 701 of the flooded evaporator 11, so that the liquid content in the gas-phase refrigerant is further reduced without increasing the pressure loss of the unit, and the harm of the suction liquid carrying phenomenon to the compressor is reduced. The gas-liquid separation device is arranged on the top of the flooded evaporator 11, and the height of the gas-liquid separation device is less than the radius of the cylinder, and the gas-liquid separation process is mainly carried out in the gas-liquid separation device, so that the pipe arrangement area below the assembly height of the gas-liquid separation device does not affect the gas-liquid separation effect, and the height of the pipe arrangement area is allowed to exceed the center line of the shell, so that more evaporation pipes can be arranged to further improve the energy efficiency and heat exchange efficiency of the air conditioning system without changing the size of the flooded evaporator 11.

[0044] The application further provides an air conditioning system with the flooded evaporator having the gas-liquid separation device.

[0045] Compared with the prior art, the application has at least the following beneficial effects: 1. The gas-liquid separation device can introduce the gas-liquid two-phase refrigerant, separate the gas-liquid two-phase refrigerant into the gas-phase refrigerant and the liquid-phase refrigerant, and finally discharge the gas-phase refrigerant through the outlet cavity, so that the suction liquid carrying phenomenon of the flooded evaporator is avoided, the heat exchange efficiency of the flooded evaporator is improved, and the failure probability of the compressor is reduced. 2、The gas-liquid separation process of the present application is carried out inside the gas-liquid separation device, which can ensure that the pipe arrangement area of the flooded evaporator does not affect the gas-liquid separation effect below the assembly height of the gas-liquid separation device, can allow the pipe arrangement area height to exceed the center line of the shell of the flooded evaporator, can arrange more evaporation pipes, and can satisfy the premise of not changing the size specifications of the flooded evaporator, improve the unit energy efficiency and heat exchange efficiency; 3、The gas-liquid separation process of the present application is carried out inside the gas-liquid separation device, which can ensure that the pipe arrangement area of the flooded evaporator does not affect the gas-liquid separation effect below the assembly height of the gas-liquid separation device, can allow the pipe arrangement area height to exceed the center line of the shell of the flooded evaporator, can arrange more evaporation pipes, and can satisfy the premise of not changing the size specifications of the flooded evaporator, improve the unit energy efficiency and heat exchange efficiency;

[0046] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A gas-liquid separation device, characterized by, The baffle (1) comprises two side walls (101) which are arranged obliquely to form a containing cavity (102), and a liquid blocking plate (2) which is arranged in the containing cavity (102) and separates the containing cavity (102) into a first chamber (103) and a second chamber (104), the first chamber (103) is used for introducing gas-liquid two-phase refrigerant and separating it into gas-phase refrigerant and liquid-phase refrigerant, and the second chamber (104) is used for introducing and discharging the gas-phase refrigerant separated by the first chamber (103).

2. The gas-liquid separation device of claim 1, wherein, An air inlet cavity (105), a separation cavity (106) and a liquid collecting cavity (107) are sequentially arranged along the arrangement direction of the side wall (101) in the first chamber (103); The air inlet cavity (105) is used for introducing gas-liquid two-phase refrigerant; The separation cavity (106) is used for separating the gas-liquid two-phase refrigerant into gas-phase refrigerant and liquid-phase refrigerant; The liquid collecting cavity (107) is used for introducing the liquid-phase refrigerant separated by the separation cavity (106).

3. The gas-liquid separation device of claim 2, wherein, A rectangular groove (108) is arranged on the top of the side wall (101) of the part of the baffle (1) located in the first chamber (103), and a first filter screen (3) is arranged on the rectangular groove (108); The baffle (1) is arranged at the top of the inside of the flooded evaporator, and the space between the rectangular groove (108), the first filter screen (3) and the inner wall of the top of the flooded evaporator forms the air inlet cavity (105).

4. The gas-liquid separation device of claim 3, wherein, A gas equalizing plate (4) is arranged below the first filter screen (3), and the gas equalizing plate (4) and the two sides of the first filter screen (3) are attached to the side wall of the baffle (1); The space between the side wall of the baffle (1), the liquid blocking plate (2), the first filter screen (3) and the gas equalizing plate (4) forms the separation cavity (106).

5. The gas-liquid separation device of claim 4, wherein, The shape of the gas equalizing plate (4) is inverted V-shaped, a plurality of gas equalizing holes (401) for passing the gas-phase refrigerant are arranged on the gas equalizing plate (4), and a plurality of first flow equalizing grooves (402) for passing the liquid-phase refrigerant are arranged on the two sides of the gas equalizing plate (4) which are attached to the side wall of the baffle (1).

6. The gas-liquid separation device of claim 5, wherein, A gas blocking plate (5) is arranged below the gas equalizing plate (4), the shape of the baffle (1) is V-shaped, and the space between the bottom of the baffle (1) and the gas blocking plate (5) forms the liquid collecting cavity (107); The shape of the gas blocking plate (5) is inverted V-shaped, and a plurality of second flow equalizing grooves (501) for passing the liquid-phase refrigerant are arranged on the two sides of the gas blocking plate (5) which are attached to the side wall of the baffle (1); The liquid-phase refrigerant sequentially passes through the first flow equalizing grooves (402) and the second flow equalizing grooves (501) from the separation cavity (106) into the liquid collecting cavity (107).

7. The gas-liquid separation device of claim 6, wherein, A notch (201) which can accommodate the gas blocking plate (5) is arranged on the bottom of the liquid blocking plate (2), and a plurality of liquid blocking holes (202) which can accommodate the gas-phase refrigerant to pass through are arranged above the notch (201); The gas-phase refrigerant enters the second chamber (104) from the separation chamber (106) through the gas equalizing hole (401) and the liquid blocking hole (202) in sequence.

8. The gas-liquid separation device of claim 7, wherein, A second filter screen (6) is arranged in the second chamber (104), and the arrangement height of the second filter screen (6) is higher than the arrangement height of the liquid blocking hole (202). An enclosing plate (7) is arranged on the top of the second chamber (104), and the two sides of the enclosing plate (7) are respectively attached to the top of the part of the baffle (1) located in the second chamber (104), and the space between the side wall of the baffle (1) and the second filter screen (6) and the enclosing plate (7) forms an air outlet chamber (109). An air outlet pipe (701) for discharging the gas-phase refrigerant is arranged on the enclosing plate (7).

9. The gas-liquid separation device of claim 2, wherein, A jet return pipe (8) for introducing the liquid-phase refrigerant into the bottom of the flooded evaporator is arranged at the bottom of the liquid collecting chamber (107). The jet return pipe (8) at least has a jet pipe (801) communicating with the bottom of the liquid collecting chamber (107), an introduction pipe (802) communicating with the condenser, and an outlet pipe (803) communicating the jet pipe (801) and the introduction pipe (802), and the other side of the outlet pipe (803) is connected to the bottom of the flooded evaporator.

10. An air conditioning system having a flooded evaporator, characterized by The flooded evaporator has the gas-liquid separation device according to any one of claims 1 to 9.

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