Gas-liquid separation device and air conditioning system

Abstract

The utility model discloses a kind of gas-liquid separation device and air conditioning system, the gas-liquid separation device includes two side walls inclination setting to constitute containing cavity's baffle, and setting in the containing cavity and the containing cavity is separated into first chamber and the liquid baffle of second cavity, the first chamber is used to introduce gas-liquid two-phase refrigerant, and it is separated into gas-phase refrigerant and liquid-phase refrigerant, the second chamber is used to introduce and discharge gas-phase refrigerant separated by the first chamber. Compared with prior art, the gas-liquid separation process of the utility model is carried out in the gas-liquid separation device, can ensure that the pipe arrangement area of full liquid evaporator is below the assembly height of gas-liquid separation device, does not affect gas-liquid separation effect, can allow pipe arrangement area height to exceed the center line of the shell of full liquid evaporator, more evaporation pipes can be arranged, to meet the premise that the appearance size specification of full liquid evaporator is not changed, improve unit energy efficiency and heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning, and in particular to a gas-liquid separation device and an air conditioning system. Background Technology

[0002] Liquid carryover during the intake of a flooded evaporator can lead to a decrease in the superheat of the compressor exhaust. This means that some of the compressor's energy is converted into the latent heat of vaporization of the liquid refrigerant, reducing the compressor's energy efficiency. At the same time, liquid carryover during the compressor intake can cause "liquid slugging" on the blades, which slowly corrodes the high-speed rotating blades and affects the reliability and stability of the air conditioning system and the compressor. Therefore, flooded evaporators typically use filters and baffles to mitigate liquid carryover during suction. However, since the refrigerant level generally needs to cover all evaporator tubes to prevent them from "dry burning" and resulting in low heat exchange efficiency, the tube distribution area of ​​the flooded evaporator needs to be placed below the shell centerline and in the lower part of the cylinder as much as possible to ensure sufficient gas-liquid separation space above the tube distribution area. This limits the number of evaporator tubes. If the performance design requirements of the air conditioning system increase, the only way to accommodate more evaporator tubes is to increase the cylinder size of the flooded evaporator, leading to increased air conditioning system costs and larger size. Therefore, how to design a gas-liquid separation device and air conditioning system that can improve the unit's energy efficiency and heat exchange efficiency without changing the external dimensions and specifications of the flooded evaporator is a technical problem that the industry urgently needs to solve. Utility Model Content

[0003] In view of the problem of liquid carrying-in phenomenon in the existing technology of flooded evaporators, this utility model proposes a gas-liquid separation device and air conditioning system.

[0004] The technical solution of this utility model is to propose a gas-liquid separation device, including a baffle 1 with two side walls 101 inclinedly arranged to form a receiving cavity 102, and a liquid baffle 2 disposed in the receiving cavity 102 and dividing the receiving cavity 102 into a first chamber 103 and a second chamber 104. The first chamber 103 is used to introduce a gas-liquid two-phase refrigerant and separate it into a gas phase refrigerant and a liquid phase refrigerant. The second chamber 104 is used to introduce and discharge the gas phase refrigerant separated by the first chamber 103.

[0005] Furthermore, an air inlet chamber 105, a separation chamber 106, and a liquid collection chamber 107 are sequentially arranged in the first chamber 103 along the setting direction of the side wall 101. The air inlet chamber 105 is used to introduce a gas-liquid two-phase refrigerant. The separation chamber 106 is used to separate the gas-liquid two-phase refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant; The liquid collection chamber 107 is used to introduce the liquid refrigerant separated by the separation chamber 106.

[0006] Furthermore, a rectangular groove 108 is provided on the top of the side wall 101 of the portion of the baffle 1 located in the first chamber 103, and a first filter screen 3 is provided on the rectangular groove 108; The baffle 1 is disposed at the top inside the flooded evaporator, and the space between the rectangular groove 108, the first filter screen 3, and the top inner wall of the flooded evaporator forms the air inlet chamber 105.

[0007] Furthermore, an air distribution plate 4 is provided below the first filter screen 3, and both sides of the air distribution plate 4 and the first filter screen 3 are attached to the side wall of the baffle 1. The separation chamber 106 is formed by the space between the side wall of the baffle 1, the liquid baffle 2, the first filter screen 3, and the gas equalization plate 4.

[0008] Furthermore, the gas equalization plate 4 is inverted V-shaped, and a plurality of gas equalization holes 401 for the passage of the gas phase refrigerant are provided on the gas equalization plate 4. A plurality of first flow equalization grooves 402 for the passage of the liquid phase refrigerant are provided on both sides of the gas equalization plate 4 where they are attached to the side walls of the baffle 1.

[0009] Furthermore, an air baffle 5 is provided below the air equalization plate 4. The baffle 1 is V-shaped, and the bottom space of the air baffle 5 and the baffle 1 constitutes the liquid collection chamber 107. The baffle plate 5 is in the shape of an inverted V. Multiple second flow equalization grooves 501 for the passage of the liquid refrigerant are provided on both sides of the baffle plate 1 where they are attached to the side wall. The liquid refrigerant enters the liquid collection chamber 107 from the separation chamber 106 through the first flow equalization channel 402 and the second flow equalization channel 501.

[0010] Furthermore, a notch 201 is provided at the bottom of the liquid baffle 2 to accommodate the gas baffle 5 through, and a plurality of liquid baffle holes 202 are provided above the notch 201 to accommodate the passage of the gaseous refrigerant. The gaseous refrigerant enters the second chamber 104 from the separation chamber 106 through the gas equalization hole 401 and the liquid blocking hole 202.

[0011] Furthermore, a second filter screen 6 is provided 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; A sealing plate 7 is provided at the top of the second chamber 104. The two sides of the sealing plate 7 are respectively attached to the top of the portion of the baffle 1 located in the second chamber 104. The space between the side wall of the baffle 1, the second filter 6, and the sealing plate 7 forms an air outlet chamber 109. An outlet pipe 701 for discharging the gaseous refrigerant is provided on the sealing plate 7.

[0012] Furthermore, an ejector return pipe 8 is provided at the bottom of the liquid collection chamber 107 for introducing the liquid refrigerant into the bottom of the flooded evaporator. The ejector return pipe 8 has at least an ejector pipe 801 communicating with the bottom of the liquid collection chamber 107, an inlet pipe 802 communicating with the condenser, and an outlet pipe 803 communicating with the ejector pipe 801 and the inlet pipe 802. The other side of the outlet pipe 803 is connected to the bottom of the flooded evaporator.

[0013] This utility model also proposes an air conditioning system having a flooded evaporator, wherein the flooded evaporator has the aforementioned gas-liquid separation device.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The gas-liquid separation device proposed in this utility model has an inlet chamber, a separation chamber, a liquid collection chamber, and an outlet chamber. It can introduce a two-phase refrigerant and separate it into a gas phase refrigerant and a liquid phase refrigerant, and finally discharge the gas phase refrigerant through the outlet chamber. This can avoid the phenomenon of gas intake and liquid carryover in a flooded evaporator, improve the heat exchange efficiency of the flooded evaporator, and reduce the failure probability of the compressor. 2. The gas-liquid separation process of this utility model is carried out inside the gas-liquid separation device, which can ensure that the gas-liquid separation effect is not affected in the pipe laying area of ​​the flooded evaporator below the assembly height of the gas-liquid separation device. It can allow the height of the pipe laying area to exceed the center line of the shell of the flooded evaporator, and can arrange more evaporation tubes to improve the unit's energy efficiency and heat exchange efficiency without changing the external dimensions of the flooded evaporator. 3. This utility model has an ejector reflux pipe installed on one side of the bottom of the liquid collection chamber, which can eject the liquid refrigerant at the bottom of the liquid collection chamber back to the bottom of the flooded evaporator, greatly reducing the probability of secondary entrainment of liquid refrigerant inside the gas-liquid separation device, effectively avoiding the phenomenon of liquid carryover during gas intake, and the separated liquid refrigerant is returned to the bottom of the flooded evaporator for heat exchange and evaporation again, which improves the heat exchange capacity of the flooded evaporator. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the gas-liquid separation device of this utility model from a first-view perspective. Figure 2 This is a schematic diagram of the gas-liquid separation device of this utility model from a second perspective. Figure 3 This is a schematic diagram of the overall structure of the gas-liquid separation device in this utility model; Figure 4 This is a cross-sectional view of the gas-liquid separation device of this utility model from a first perspective. Figure 5 This is a cross-sectional view of the gas-liquid separation device of this utility model from a second perspective; Figure 6 This is a cross-sectional view of the gas-liquid separation device of this utility model from a third-person perspective; Figure 7 This is an exploded view of the gas-liquid separation device in this utility model; Figure 8 This is a schematic diagram of the baffle plate in the gas-liquid separation device of this utility model; Figure 9 This is a schematic diagram of the gas equalization plate in the gas-liquid separation device of this utility model; Figure 10 This is a schematic diagram of the baffle plate in the gas-liquid separation device of this utility model; Figure 11 This is a schematic diagram of the baffle in the gas-liquid separation device of this utility model; Wherein, 1 is a baffle, 101 is a side wall, 102 is a receiving cavity, 103 is a first chamber, 104 is a second chamber, 105 is an air inlet chamber, 106 is a separation chamber, 107 is a liquid collection chamber, 108 is a rectangular groove, and 109 is an air outlet chamber; 2 is a baffle plate, 201 is a notch, and 202 is a baffle hole; 3 is the first filter; 4 is the air distribution plate, 401 is the air distribution hole, and 402 is the first flow distribution groove; 5 is the baffle plate, and 501 is the second flow equalization groove; 6 is the second filter; 7 is the sealing plate, and 701 is the vent pipe; 8 is the ejector return pipe, 801 is the jet pipe, 802 is the inlet pipe, 803 is the outlet pipe, and 804 is the ejector. 9 is the first side panel; 10 is the second side panel; 11 is a flooded evaporator; 12 represents heat exchange tubes; 13 is the liquid inlet pipe; 14 is the liquid outlet pipe. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0019] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0020] Therefore, flooded evaporators typically use filters and baffles to mitigate liquid carryover during suction. However, since the refrigerant level generally needs to cover all evaporator tubes to prevent them from "dry burning" and resulting in low heat exchange efficiency, the tube distribution area of ​​the flooded evaporator needs to be placed below the shell centerline and in the lower part of the cylinder as much as possible to ensure sufficient gas-liquid separation space above the tube distribution area. This limits the number of evaporator tubes. If the performance design requirements of the air conditioning system increase, the only way to accommodate more evaporator tubes is to increase the cylinder size of the flooded evaporator, leading to increased air conditioning system costs and larger size.

[0021] To address the above problems, this utility model proposes a gas-liquid separation device. Please refer to [link / reference]. Figure 3 and Figure 11 It includes a baffle 1 with two sidewalls 101 inclinedly arranged to form a receiving cavity 102, and a liquid baffle 2 disposed in the receiving cavity 102 and dividing the receiving cavity 102 into a first chamber 103 and a second chamber 104. The first chamber 103 is used to introduce a gas-liquid two-phase refrigerant and separate it into a gas phase refrigerant and a liquid phase refrigerant. 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 are both part of the receiving chamber 102 and belong to the internal structure of the gas-liquid separation device. The first chamber 103 can introduce a two-phase gas-liquid refrigerant and separate it into a gas phase refrigerant and a liquid phase refrigerant. That is, the gas-liquid separation process in this utility model is carried out inside the gas-liquid separation device.

[0023] Based on this configuration, the present invention can achieve the beneficial effects described above: It can ensure that the pipe laying area of ​​the flooded evaporator does not affect the gas-liquid separation effect below the assembly height of the gas-liquid separator. It can allow the height of the pipe laying area to exceed the center line of the shell of the flooded evaporator, and can arrange more evaporation tubes to improve the unit's energy efficiency and heat exchange efficiency without changing the external dimensions of the flooded evaporator.

[0024] Please see Figure 4 In this invention, an air inlet chamber 105, a separation chamber 106, and a liquid collection chamber 107 are sequentially arranged in the first chamber 103 along the side wall 101. Inlet chamber 105 is used to introduce gas-liquid two-phase refrigerant; The separation chamber 106 is used to separate the gas-liquid two-phase refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant; The liquid collection chamber 107 is used to introduce the liquid refrigerant separated by the separation chamber 106.

[0025] In addition, the present invention provides an outlet chamber 109 in the second chamber 104 for discharging gaseous refrigerant; By coordinating the four chambers, this invention can introduce a two-phase refrigerant (gas and liquid), split it into a gas phase refrigerant and a liquid phase refrigerant, and finally discharge the gas phase refrigerant through the outlet chamber 109. This avoids the phenomenon of liquid carrying-in during gas intake in a flooded evaporator, improves the heat exchange efficiency of the flooded evaporator, and reduces the probability of compressor failure.

[0026] Please see Figure 1 , Figure 7 and Figure 11 In this utility model, a 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 a first filter screen 3 is provided on the rectangular groove 108. The baffle 1 is located at the top inside the flooded evaporator 11, and the space between the rectangular groove 108, the first filter screen 3, and the top inner wall of the flooded evaporator 11 forms an air intake chamber 105.

[0027] From the appendix Figure 11As can be seen, due to the setting of the rectangular groove 108, the height of the top of the baffle 1 in the first chamber 103 is lower than the height of the top of the baffle 1 in the second chamber 104. In this utility model, the baffle 1 is set at the top inside the flooded evaporator 11, so that the outside of the second chamber 104 is in close contact with the top shell inside the flooded evaporator 11, ensuring the sealing of the second chamber 104. Since the height of the top of the baffle 1 in the first chamber 103 is lower than the height of the top of the baffle 1 in the second chamber 104, there is a gap between the first chamber 103 and the top shell inside the flooded evaporator 11. This gap can be used to introduce gas-liquid two-phase refrigerant, which constitutes the air inlet chamber 105 mentioned above.

[0028] That is, through the above-mentioned structural improvements, the present invention can form the air inlet chamber 105 in the present invention, and introduce a gas-liquid two-phase refrigerant into the present invention.

[0029] Please see Figure 4 , Figure 6 and Figure 7 The present invention provides an air distribution plate 4 below the first filter screen 3, and both sides of the air distribution plate 4 and 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 baffle 2, the first filter screen 3, and the gas equalization plate 4 forms a separation chamber 106.

[0030] This configuration shows that the intake chamber 105 and the separation chamber 106 are separated by the first filter 3. This design ensures that the gas-liquid two-phase refrigerant in the intake chamber 105 must first pass through the first filter 3 for adsorption and filtration before entering the separation chamber 106, where a first gas-liquid separation occurs. The separated liquid refrigerant drips onto the gas equalization plate 4 at the bottom of the separation chamber 106 for a second gas-liquid separation. That is, based on the above-mentioned configuration, the present invention can form the separation chamber 106 in the present invention for gas-liquid separation of gas and liquid refrigerant. At the same time, through the above-mentioned configuration of the first filter screen 3 and the gas equalization plate 4, the present invention can perform at least two gas-liquid separations, which greatly improves the gas-liquid separation efficiency in the present invention.

[0031] Please see Figure 9 In this utility model, the gas equalization plate 4 is in the shape of an inverted V. Multiple gas equalization holes 401 for passing gaseous refrigerant are provided on the gas equalization plate 4. Multiple first flow equalization grooves 402 for passing liquid refrigerant are provided on the side walls of the baffle 1 on both sides of the gas equalization plate 4.

[0032] As mentioned above, the liquid refrigerant separated by the first filter 3 drips onto the gas equalization plate 4 at the bottom of the separation chamber 106. In order to better discharge this part of the liquid refrigerant and collect it into the liquid collection chamber 106 at the bottom, the gas equalization plate 4 is set to be in the shape of an inverted V. At the same time, the two sides of the gas equalization plate 4 are respectively attached to the side wall 101 of the baffle 1. Since the side wall of the inverted V-shaped gas equalization plate 4 is a slope, it can play a guiding effect, allowing the liquid refrigerant dripping onto the gas equalization plate 4 to be quickly guided to the inner wall of the baffle 1 and flow along the inner wall of the baffle 1 into the liquid collection chamber 106 below. The first flow equalization groove 402 is evenly opened on both sides of the gas equalization plate 4, which allows the droplets to flow and converge to the bottom in time, avoiding the risk of being entrained again. The gaseous refrigerant then undergoes collision separation through the gas equalization plate 4. The surface of the gas equalization plate 4 has multiple evenly distributed gas equalization holes 401, which can effectively generate gas equalization and liquid blocking effects. In other words, by improving the structure of the gas equalization plate 4, this utility model can achieve the functions of rapid flow diversion, avoiding secondary entrainment, effective gas equalization, and liquid blocking.

[0033] Please see Figure 4 , Figure 6 and Figure 10 In this utility model, an air baffle 5 is provided below the air equalization plate 4. The baffle 1 is V-shaped, and the bottom space of the air baffle 5 and the baffle 1 forms a liquid collection cavity 107. The baffle plate 5 is in the shape of an inverted V. Multiple second flow equalization grooves 501 for passing liquid refrigerant are provided on both sides of the baffle plate 1 where they are attached to the side wall. The liquid refrigerant enters the liquid collection chamber 107 from the separation chamber 106 through the first flow equalization channel 402 and the second flow equalization channel 501.

[0034] From the appendix Figure 10 It can be seen that the structure of the baffle plate 5 is similar to that of the air equalization plate 4. However, the position of the baffle plate 5 is closer to the bottom of the baffle plate 1. Therefore, the opening distance between the inverted V of the baffle plate 5 is smaller. Due to the inverted V shape of the baffle plate 5, it can form a quadrilateral cavity with the V-shaped part at the bottom of the baffle plate 1, which is the liquid collection cavity 107 mentioned above. In this invention, the shape of the baffle plate 5 is set as an inverted V-shape, and its function is the same as that of the gas equalization plate 4, which is used to achieve the purpose of rapid flow diversion. Similarly, multiple second flow equalization grooves 501 for passing liquid refrigerant are provided on both sides of the baffle plate 5 where they are attached to the side wall of the baffle plate 1. These grooves are used to allow the droplets to flow smoothly and converge to the bottom liquid collection cavity 107 in time, so as to avoid the risk of being entrained again. In other words, the reason why the baffle plate 5 does not have a gas equalization hole 401 is that the baffle plate 5 needs to block the gaseous refrigerant from passing through, so that the main liquid flowing into the lower liquid collection chamber 107 is liquid refrigerant. That is, through the above-mentioned settings, this utility model can obtain the liquid refrigerant after separation by the separation chamber 106, and at the same time can accelerate the aggregation of liquid refrigerant and avoid the risk of secondary entrainment.

[0035] Please see Figures 4 to 8 The present invention provides a notch 201 at the bottom of the liquid baffle 2 to accommodate the gas baffle 5 through, and provides a plurality of liquid baffle holes 202 above the notch 201 to accommodate the passage of gaseous refrigerant. The gaseous refrigerant enters the second chamber 104 from the separation chamber 106 through the gas equalization hole 401 and the liquid blocking hole 202.

[0036] As mentioned above, the space formed between the baffle plate 5 and the baffle plate 1 is the liquid collection chamber 107. Since the bottom of the baffle plate 1 is V-shaped, it is not easy to completely separate it by the liquid baffle plate 2. Therefore, this utility model directly sets a notch 201 at the bottom of the liquid baffle plate 2 so that the baffle plate 5 can connect the first chamber 103 and the second chamber 104, so that the entire space formed at the bottom of the baffle plate 1 can be used as the above-mentioned liquid collection chamber 107, which can increase the storage space for liquid refrigerant in this utility model. In addition, from the appendix Figure 4 It can be clearly seen that there is a space between the bottom of the separation chamber 106 and the top of the liquid collection chamber 107. This space is between the gas equalization plate 4 and the baffle plate 5. This space mainly contains the gaseous refrigerant and liquid refrigerant after separation by the separation chamber 106. Here, the liquid refrigerant can enter the liquid collection chamber 107 below through the baffle plate 5. Therefore, it is necessary to guide the gaseous refrigerant. As mentioned above, the gaseous refrigerant needs to enter the outlet chamber 109 in the second chamber 104. The first chamber 103 and the second chamber 104 are separated by the baffle plate 2. Therefore, in order to ensure that the gaseous refrigerant can smoothly enter the second chamber 104, the present invention provides a plurality of baffle holes 202 above the notch 201 to accommodate the gaseous refrigerant. Since the notch 201 is for the passage of the baffle plate 5, the space above the notch 201 is also the space between the gas equalization plate 4 and the baffle plate 5. After setting the baffle holes 202 in this part, it can ensure that the gaseous refrigerant can smoothly enter the second chamber 104. Its specific operating logic is as follows: due to the large volume of the separation chamber 106, the gas and liquid refrigerants can undergo spatial gravity sedimentation in the separation chamber 106: the gas phase refrigerant continues to be driven by the low pressure of the outlet chamber 109, and then flows through the baffle plate 2 to collide and separate with the baffle hole 202 again, generating gas equalization and liquid baffle effects before entering the outlet chamber 109 in the second chamber 104; In other words, through the above-mentioned settings, this utility model can perform a third gas-liquid separation, achieve gas equalization and liquid blocking, and introduce the gas phase refrigerant into the gas phase 109, thus avoiding the phenomenon of gas intake and liquid carryover in the flooded evaporator 11.

[0037] Please see Figure 4 , Figure 5 and Figure 7 The present invention provides a second filter screen 6 in the second chamber 104, and the installation height of the second filter screen 6 is higher than the installation height of the liquid-blocking hole 202; A sealing plate 7 is provided at the top of the second chamber 104. 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. The space between the side wall of the baffle 1, the second filter 6, and the sealing plate 7 forms an air outlet chamber 109. An outlet pipe 701 for discharging gaseous refrigerant is provided on the sealing plate 7.

[0038] This part is the structural setup in the second chamber 104. The purpose of setting the second filter 6 is for the fourth gas-liquid separation, which is to effectively intercept the small amount of liquid droplets entrained in the gas phase refrigerant, improve the gas-liquid separation efficiency, and ensure that there are no liquid refrigerant components in the gas phase refrigerant in the outlet chamber 109, thereby effectively avoiding the phenomenon of liquid being carried in during gas intake. Setting the height of the second filter 6 higher than the height of the liquid-blocking hole 202 is to prevent the gaseous refrigerant from directly entering the gas outlet chamber 109 after passing through the liquid-blocking hole 202, so as to ensure that the gaseous refrigerant entering the second chamber 104 can undergo gas-liquid separation again and ensure gas-liquid separation efficiency. The purpose of setting the sealing plate 7 is to ensure the airtightness of the outlet chamber 109, and the outlet pipe 107 is set to facilitate the discharge of the gaseous refrigerant.

[0039] In other words, this utility model, through this part setting, can perform another effective interception, improve the gas-liquid separation efficiency, and ensure that there are no liquid refrigerant components in the gas phase refrigerant in the gas outlet chamber 109, thereby effectively avoiding the phenomenon of liquid being carried in during gas intake.

[0040] Please see Figure 1 and Figure 2 The present invention provides an ejector return pipe 8 at the bottom of the liquid collection chamber 107 for introducing liquid refrigerant into the bottom of the flooded evaporator 11. The ejector return pipe 8 has at least an ejector pipe 801 communicating with the bottom of the liquid collection chamber 107, an inlet pipe 802 communicating with the condenser, and an outlet pipe 803 communicating with the ejector pipe 801 and the inlet pipe 802. The other side of the outlet pipe 803 is connected to the bottom of the flooded evaporator 11.

[0041] Please participate Figure 1 In this invention, the ejector return pipe 8 also has an ejector 804, which provides power to introduce liquid refrigerant from the liquid collection chamber 107 and the condenser and deliver it to the bottom of the flooded evaporator 11. Through the setting of the ejector return pipe 8, this invention can return the liquid refrigerant at the bottom of the liquid collection chamber 107 to the bottom of the flooded evaporator 11 by ejection, which greatly reduces the probability of the liquid refrigerant inside the gas-liquid separation device being entrained for a second time, effectively avoids the phenomenon of liquid carrying during gas intake, and the separated liquid refrigerant returns to the bottom of the flooded evaporator 11 for heat exchange and evaporation again, which improves the heat exchange capacity of the flooded evaporator 11.

[0042] Please see Figure 3 and Figure 7 As mentioned above, the baffle 1 in this utility model is V-shaped. In order to seal both sides of it, the utility model provides a first baffle 9 and a second baffle 10 on both sides of the baffle 1, thereby ensuring that the space formed in the baffle 1 is a closed space.

[0043] Based on the above-mentioned gas-liquid separation device, this utility model only needs to ensure that the flow velocity of the refrigerant in the three internal chambers (i.e., the inlet chamber 105, the separation chamber 106, and the outlet chamber 107) is not less than the flow velocity of the refrigerant in the outlet pipe 701 of the flooded evaporator 11. This achieves a further reduction in the liquid content of the gas phase refrigerant without increasing the pressure loss of the unit, thereby reducing the damage to the compressor caused by the liquid carryover phenomenon during gas intake. In this invention, the gas-liquid separation device is installed at the top of the flooded evaporator 11, and its height is less than the radius of the cylinder. The gas-liquid separation process mainly takes place inside the gas-liquid separation device. Therefore, as long as the pipe laying area is below the assembly height of the gas-liquid separation device, it will not affect the gas-liquid separation effect. The height of the pipe laying area is also allowed to exceed the center line of the shell, so that more evaporation tubes can be arranged to further improve the energy efficiency and heat exchange efficiency of the air conditioning system without changing the external dimensions of the flooded evaporator 11.

[0044] This utility model also proposes an air conditioning system having a flooded evaporator, which has the aforementioned gas-liquid separation device.

[0045] In summary, compared with the prior art, the present invention has at least the following beneficial effects: 1. The gas-liquid separation device proposed in this utility model has an inlet chamber, a separation chamber, a liquid collection chamber, and an outlet chamber. It can introduce a two-phase refrigerant and separate it into a gas phase refrigerant and a liquid phase refrigerant, and finally discharge the gas phase refrigerant through the outlet chamber. This can avoid the phenomenon of gas intake and liquid carryover in a flooded evaporator, improve the heat exchange efficiency of the flooded evaporator, and reduce the failure probability of the compressor. 2. The gas-liquid separation process of this utility model is carried out inside the gas-liquid separation device, which can ensure that the gas-liquid separation effect is not affected in the pipe laying area of ​​the flooded evaporator below the assembly height of the gas-liquid separation device. It can allow the height of the pipe laying area to exceed the center line of the shell of the flooded evaporator, and can arrange more evaporation tubes to improve the unit's energy efficiency and heat exchange efficiency without changing the external dimensions of the flooded evaporator. 3. This utility model has an ejector reflux pipe installed on one side of the bottom of the liquid collection chamber, which can eject the liquid refrigerant at the bottom of the liquid collection chamber back to the bottom of the evaporator, greatly reducing the probability of the liquid refrigerant inside the gas-liquid separation device being entrained a second time, effectively avoiding the phenomenon of liquid carrying during gas intake, and the separated liquid refrigerant is returned to the bottom of the evaporator for heat exchange and evaporation again, which improves the heat exchange capacity of the evaporator.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas-liquid separation device, characterized in that, The device includes a baffle (1) with two sidewalls (101) inclinedly arranged to form a receiving cavity (102), and a baffle (2) disposed in the receiving cavity (102) and dividing the receiving cavity (102) into a first chamber (103) and a second chamber (104). The first chamber (103) is used to introduce a gas-liquid two-phase refrigerant and separate it into a gas phase refrigerant and a liquid phase refrigerant. The second chamber (104) is used to introduce and discharge the gas phase refrigerant separated by the first chamber (103).

2. The gas-liquid separation device according to claim 1, characterized in that, An air inlet chamber (105), a separation chamber (106), and a liquid collection chamber (107) are sequentially arranged in the first chamber (103) along the setting direction of the side wall (101). The air inlet chamber (105) is used to introduce a gas-liquid two-phase refrigerant; The separation chamber (106) is used to separate the gas-liquid two-phase refrigerant into a gas phase refrigerant and a liquid phase refrigerant; The liquid collection chamber (107) is used to introduce the liquid refrigerant separated by the separation chamber (106).

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

4. The gas-liquid separation device according to claim 3, characterized in that, An air distribution plate (4) is provided below the first filter (3), and both sides of the air distribution plate (4) and the first filter (3) are attached to the side wall of the baffle (1). The space between the side wall of the baffle (1), the liquid baffle (2), the first filter (3), and the gas equalization plate (4) forms the separation chamber (106).

5. The gas-liquid separation device according to claim 4, characterized in that, The gas equalization plate (4) is in the shape of an inverted V. Multiple gas equalization holes (401) for passing the gas phase refrigerant are provided on the gas equalization plate (4). Multiple first flow equalization grooves (402) for passing the liquid phase refrigerant are provided on both sides of the gas equalization plate (4) where they are attached to the side wall of the baffle (1).

6. The gas-liquid separation device according to claim 5, characterized in that, A baffle plate (5) is provided below the gas equalization plate (4). The baffle plate (1) is V-shaped. The bottom space of the baffle plate (5) and the baffle plate (1) constitutes the liquid collection chamber (107). The baffle plate (5) is in the shape of an inverted V. Multiple second flow equalization grooves (501) for the liquid refrigerant to pass through are provided on both sides of the baffle plate (1) where they are attached to the side wall. The liquid refrigerant enters the liquid collection chamber (107) from the separation chamber (106) through the first flow equalization channel (402) and the second flow equalization channel (501).

7. The gas-liquid separation device according to claim 6, characterized in that, A notch (201) is provided at the bottom of the liquid baffle (2) to accommodate the gas baffle (5) through it, and a plurality of liquid baffle holes (202) are provided above the notch (201) to accommodate the passage of the gaseous refrigerant. The gaseous refrigerant enters the second chamber (104) from the separation chamber (106) through the gas equalization hole (401) and the liquid blocking hole (202).

8. The gas-liquid separation device according to claim 7, characterized in that, A second filter screen (6) is provided 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); A sealing plate (7) is provided at the top of the second chamber (104). 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). The space between the side wall of the baffle (1), the second filter (6), and the sealing plate (7) forms an air outlet chamber (109). An outlet pipe (701) for discharging the gaseous refrigerant is provided on the sealing plate (7).

9. The gas-liquid separation device according to claim 2, characterized in that, An ejector return pipe (8) is provided at the bottom of the liquid collection chamber (107) for introducing the liquid refrigerant into the bottom of the flooded evaporator. The ejector return pipe (8) has at least an ejector pipe (801) communicating with the bottom of the liquid collection chamber (107), an inlet pipe (802) communicating with the condenser, and an outlet pipe (803) communicating with the ejector pipe (801) and the inlet pipe (802), the other side of which is connected to the bottom of the flooded evaporator.

10. An air conditioning system having a flooded evaporator, characterized in that, The flooded evaporator has a gas-liquid separation device as described in any one of claims 1 to 9.

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