A gas-liquid separation gas guide device, falling film evaporator and air conditioner

Abstract

The application discloses a gas-liquid separation gas guide device, a falling-film evaporator and an air conditioner, relates to the field of heat exchange equipment, and solves the problem that gaseous refrigerant generated in each layer of falling-film area of the prior art falling-film evaporator cannot be discharged in time, and the gaseous refrigerant not discharged in time affects the uniformity and stability of liquid distribution in the falling-film area. The gas-liquid separation gas guide device comprises a liquid distribution plate and a porous baffle, the liquid distribution plate is arranged in the falling-film area of the falling-film evaporator, the porous baffle is arranged on the side of the liquid distribution plate, the number of the liquid distribution plates is at least two, the liquid distribution plates are arranged at intervals, the liquid distribution plates and the porous baffle enclose at least two cavities separated from each other, the heat exchange pipes of the falling-film evaporator are located in the cavities, and the porous baffles on the sides of each cavity are provided with air holes. The gas-liquid separation gas guide device can discharge gaseous refrigerant generated in each cavity in time, so that the uniformity and stability of liquid distribution in each layer of falling-film area can be improved, and the heat exchange efficiency of the heat exchange pipes can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to heat exchange equipment technical field, especially to a kind of gas-liquid separation gas guide device, including the gas-liquid separation gas guide device of falling film evaporator, and including the air conditioner of the falling film evaporator. BACKGROUND

[0002] The falling film evaporator is composed of liquid inlet, liquid distributor, heat exchange tube, gas outlet and the like, and its heat exchange process mainly utilizes the liquid distributor to uniformly distribute refrigerant to the heat exchange tube to form a thin film, the refrigerant liquid film is in full contact with the surface of the heat exchange tube and exchanges heat to evaporate, and the unevaporated liquid refrigerant drops along the heat exchange tube to the bottom of the evaporator to form an immersion zone, and the gas converted by the evaporation of the refrigerant flows out from the gas outlet, to realize vaporization conversion.

[0003] As shown in Figure 1 The prior art sets a liquid equalizing plate below the liquid distributor to further ensure the uniformity of liquid distribution, and the liquid equalizing plate separates the falling film area into a first layer of falling film area and a second layer of falling film area, the refrigerant passing through the liquid distributor enters the first layer of falling film area, and the unevaporated refrigerant in the first layer of falling film area drops along the heat exchange tube to the bottom of the liquid equalizing plate, is further liquid equalized and drops onto the heat exchange tube of the second layer of falling film area to perform secondary falling film evaporation. It can be seen that heat exchange exists in each layer of falling film area, and the generation of gaseous refrigerant is inevitable during the heat exchange of the refrigerant, however, the gas passages of the existing falling film evaporator are connected in series, so that the gaseous refrigerant generated in each layer of falling film area cannot be discharged in time, and the gaseous refrigerant not discharged in time will interfere with the distribution and uniform dropping of the liquid refrigerant in the falling film area, thereby affecting the uniformity and stability of the liquid distribution in the falling film area of the falling film evaporator, and further affecting the heat exchange efficiency thereof. SUMMARY

[0004] One of the purposes of the present application is to provide a gas-liquid separation gas guide device, which solves the technical problem that the gaseous refrigerant generated in each layer of falling film area of the prior art falling film evaporator cannot be discharged in time, and the gaseous refrigerant not discharged in time affects the uniformity and stability of the liquid distribution in the falling film area. The technical effects produced by the preferred technical solution of the present application are described in detail below.

[0005] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0006] The gas-liquid separation gas guide device of the present application comprises a liquid equalizing plate and a perforated baffle, wherein the liquid equalizing plate is arranged in the falling film area of the falling film evaporator, the perforated baffle is arranged on the side surface of the liquid equalizing plate, the number of the liquid equalizing plates is at least two, the liquid equalizing plates are arranged at intervals, the liquid equalizing plates and the perforated baffle enclose at least two cavities separated from each other, the heat exchange tube of the falling film evaporator is located in the cavities, and the perforated baffle on the side surface of each cavity is provided with gas holes.

[0007] According to a preferred embodiment, the liquid distribution plate is provided with liquid distribution holes, through which the liquid refrigerant in the chamber flows out, and the flow velocity of the liquid refrigerant in the chamber through the liquid distribution holes is 0.1 to 1.5 m / s, and the flow velocity of the gaseous refrigerant in the chamber through the gas holes is 2 to 3 m / s.

[0008] According to a preferred embodiment, the opening size of the pore is 1.9 to 2.6 mm, and the distance between two adjacent pores is 17 to 24 mm.

[0009] According to a preferred embodiment, the pores are evenly distributed on the upper side of each of the chambers.

[0010] According to a preferred embodiment, the gas-liquid separation and gas guiding device further includes a baffle plate, which is located outside the porous baffle plate and forms a gas channel with the porous baffle plate.

[0011] According to a preferred embodiment, each of the chambers has a baffle plate on its outer side, and each of the chambers has a gas channel formed on its side, with the gas channels separated from each other.

[0012] According to a preferred embodiment, the baffle plate and the porous baffle plate are spaced apart, and two adjacent baffle plates are spaced apart, so that the gas channel is formed between the baffle plate and the porous baffle plate, and / or between two adjacent baffle plates.

[0013] According to a preferred embodiment, the air baffle has an L-shaped structure, and one end of the air baffle is fixedly connected to the porous baffle.

[0014] The gas-liquid separation and gas guiding device provided by the present invention has at least the following beneficial technical effects:

[0015] The gas-liquid separation and gas guiding device of the present invention includes a liquid equalization plate and a porous baffle. The liquid equalization plate is disposed in the falling film zone of a falling film evaporator, and the porous baffle is disposed on the side of the liquid equalization plate. There are at least two liquid equalization plates, which are spaced apart. The liquid equalization plate and the porous baffle form at least two compartments that are separated from each other. The heat exchange tubes of the falling film evaporator are located in the compartments. Each compartment has a perforated baffle on its side, which allows the gaseous refrigerant generated during heat exchange in each compartment to be discharged in time through the perforated holes, while the liquid refrigerant flows down under gravity and enters the next compartment for heat exchange through the liquid equalization plate.

[0016] The gas-liquid separation and gas guiding device of this invention allows the gaseous refrigerant generated during heat exchange in each chamber to be discharged in a timely manner, thereby improving the uniformity and stability of liquid distribution in each falling film zone. This effectively improves the heat exchange efficiency of the heat exchange tubes and avoids the impact of undischarged gaseous refrigerant on the uniformity and stability of liquid distribution in the falling film zone. In other words, the gas-liquid separation and gas guiding device of this invention solves the technical problem in the prior art where the gaseous refrigerant generated in each falling film zone of a falling film evaporator cannot be discharged in a timely manner, and the undischarged gaseous refrigerant affects the uniformity and stability of liquid distribution in the falling film zone.

[0017] The second objective of this invention is to provide a falling film evaporator.

[0018] The falling film evaporator of the present invention includes the gas-liquid separation and gas guiding device described in any of the technical solutions of the present invention.

[0019] The falling film evaporator provided by this invention has at least the following beneficial technical effects:

[0020] The falling film evaporator of the present invention includes a gas-liquid separation and gas guiding device according to any of the technical solutions of the present invention. The gas-liquid separation and gas guiding device can enable the gaseous refrigerant generated by heat exchange in each chamber to be discharged in a timely manner, thereby improving the uniformity and stability of liquid distribution in each falling film zone, and thus effectively improving the heat exchange efficiency of the falling film evaporator.

[0021] The third objective of this invention is to provide an air conditioner.

[0022] The air conditioner of the present invention includes the falling film evaporator described in any of the technical solutions of the present invention.

[0023] The air conditioner provided by this invention has at least the following beneficial technical effects:

[0024] The air conditioner of the present invention includes a falling film evaporator according to any of the technical solutions of the present invention. Due to the improved heat exchange efficiency of the falling film evaporator, the performance of the air conditioner can be improved. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a falling film evaporator in the prior art;

[0027] Figure 2 This is a schematic diagram of a preferred embodiment of the gas-liquid separation and gas guiding device of the present invention;

[0028] Figure 3 This is a first schematic diagram of a preferred embodiment of the porous baffle of the present invention;

[0029] Figure 4 This is a second schematic diagram of a preferred embodiment of the porous baffle of the present invention;

[0030] Figure 5 This is a first schematic diagram of a preferred embodiment of the falling film evaporator of the present invention;

[0031] Figure 6 This is a second schematic diagram of a preferred embodiment of the falling film evaporator of the present invention;

[0032] Figure 7 yes Figure 6 Enlarged view of part A in the middle.

[0033] In the figure: 101, liquid distribution plate; 102, porous baffle; 1021, vent; 103, chamber; 104, baffle plate; 105, gas passage; 201, heat exchange tube; 202, liquid distributor; 203, shell; 204, liquid inlet pipe; 205, gas outlet pipe; 206, tube sheet. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] The following is in conjunction with the instruction manual appendix. Figures 2-7 Examples 1 to 3 provide a detailed description of the gas-liquid separation and gas guiding device, falling film evaporator, and air conditioner of the present invention.

[0036] Example 1

[0037] This embodiment provides a detailed description of the gas-liquid separation and gas guiding device of the present invention.

[0038] The gas-liquid separation and gas guiding device of this embodiment includes a liquid equalization plate 101 and a porous baffle 102. The liquid equalization plate 101 is disposed in the falling film zone of the falling film evaporator, and the porous baffle 102 is disposed on the side of the liquid equalization plate 101. There are at least two liquid equalization plates 101, spaced apart, forming at least two mutually separated chambers 103. The heat exchange tubes 201 of the falling film evaporator are located within the chambers 103. Each chamber 103 has a porous baffle 102 on its side with vent holes 1021. Figures 2-7As shown. Preferably, the liquid distribution plate 101 and the porous baffle 102 are welded together. Preferably, the porous baffle 102 is disposed on both sides of the liquid distribution plate 101, as shown. Figure 2 As shown.

[0039] Specifically, when there are two equalizing plates 101, the equalizing plates 101 and the porous baffles 102 form two separate chambers 103; when there are three equalizing plates 101, the equalizing plates 101 and the porous baffles 102 form three separate chambers 103; and so on. Preferably, the number of equalizing plates 101 is 2 to 10. Figure 2 , Figure 5 and Figure 6 A schematic diagram of the gas-liquid separation and gas guiding device is shown when there are two liquid distribution plates 101. In this embodiment, the more liquid distribution plates 101 there are, the more chambers 103 are formed, the more uniform and stable the liquid distribution in each falling film zone is, and the higher the heat exchange efficiency of the heat exchange tubes.

[0040] The gas-liquid separation and gas guiding device of this embodiment includes a liquid equalization plate 101 and a porous baffle 102. The liquid equalization plate 101 is disposed in the falling film zone of the falling film evaporator, and the porous baffle 102 is disposed on the side of the liquid equalization plate 101. There are at least two liquid equalization plates 101, which are spaced apart. The liquid equalization plate 101 and the porous baffle 102 enclose at least two mutually separated chambers 103. The heat exchange tube 201 of the falling film evaporator is located in the chamber 103. Each porous baffle 102 on the side of each chamber 103 is provided with vent holes 1021, so that the gaseous refrigerant generated by heat exchange in each chamber 103 can be discharged in time through the vent holes 1021, while the liquid refrigerant flows down under the action of gravity and enters the next chamber 103 for heat exchange through the liquid equalization plate 101.

[0041] The gas-liquid separation and gas guiding device of this embodiment allows the gaseous refrigerant generated during heat exchange in each chamber 103 to be discharged in a timely manner, thereby improving the uniformity and stability of liquid distribution in each falling film zone. This effectively improves the heat exchange efficiency of the heat exchange tube 201 and avoids the impact of undischarged gaseous refrigerant on the uniformity and stability of liquid distribution in the falling film zone. In other words, the gas-liquid separation and gas guiding device of this embodiment solves the technical problem in the prior art where the gaseous refrigerant generated in each falling film zone of a falling film evaporator cannot be discharged in a timely manner, and the undischarged gaseous refrigerant affects the uniformity and stability of liquid distribution in the falling film zone.

[0042] According to a preferred embodiment, the liquid distribution plate 101 is provided with liquid distribution holes. The liquid refrigerant in the chamber 103 flows out through the liquid distribution holes, and the flow velocity of the liquid refrigerant in the chamber 103 through the liquid distribution holes is 0.1 to 1.5 m / s, while the flow velocity of the gaseous refrigerant in the chamber 103 through the air vent 1021 is 2 to 3 m / s. The gas-liquid separation and gas guiding device of this preferred embodiment, by making the flow velocity of the liquid refrigerant in the chamber 103 through the liquid distribution holes 0.1 to 1.5 m / s and the flow velocity of the gaseous refrigerant in the chamber 103 through the air vent 1021 2 to 3 m / s, can improve the gas-liquid separation effect of the refrigerant, prevent the liquid refrigerant passing through the liquid distribution holes from carrying gaseous refrigerant, and also prevent the gaseous refrigerant passing through the air vent 1021 from carrying liquid refrigerant.

[0043] According to a preferred embodiment, the opening size of the vent 1021 is 1.9–2.6 mm, and the distance between two adjacent vents 1021 is 17–24 mm. Preferably, the vent 1021 has a circular, square, or oblong structure. Figure 3 and Figure 4 A schematic diagram showing a circular vent 1021 is provided. When the vent 1021 is circular, the opening size of the vent 1021 in this preferred embodiment refers to the diameter of the vent 1021; when the vent 1021 is square, the opening size of the vent 1021 in this preferred embodiment refers to the width of the vent 1021; when the vent 1021 is oblong or otherwise does not have a unique opening size, the opening size of the vent 1021 in this preferred embodiment refers to the maximum opening size of the vent 1021. In the gas-liquid separation and gas guiding device of this preferred embodiment, the opening size of the vent 1021 is 1.9–2.6 mm, and the distance between two adjacent vents 1021 is 17–24 mm, thereby ensuring that the flow velocity of the gaseous refrigerant is 2–3 m / s, thus improving the gas-liquid separation effect of the refrigerant.

[0044] According to a preferred embodiment, vents 1021 are evenly distributed on the upper side of each chamber 103, such as... Figure 3 and Figure 4 , Figure 6 and Figure 7 As shown. Since the gaseous refrigerant is relatively light and flows upward, in this embodiment, the preferred technical solution is that the vents 1021 are distributed on the upper side of each chamber 103 so that the gaseous refrigerant in the chamber 103 can be discharged from the vents 1021 in a timely manner, thereby improving the uniformity and stability of the liquid distribution in each falling film zone. On the other hand, the uniform distribution of the vents 1021 also ensures that the gaseous refrigerant discharged through the vents 1021 is evenly distributed, thereby realizing that while the refrigerant exchanges heat in each chamber 103, it can also achieve gas-liquid separation with gas equalization and liquid blocking, further improving the uniformity and stability of the liquid distribution in each falling film zone, and thus further improving the heat exchange efficiency of the heat exchange tube 201.

[0045] According to a preferred embodiment, the gas-liquid separation and gas guiding device further includes a baffle plate 104, which is located outside the porous baffle plate 102 and forms a gas channel 105 between the porous baffle plate 102 and the porous baffle plate 102. Figure 2 and Figure 6 As shown. The preferred gas-liquid separation and gas guiding device in this embodiment also includes a baffle plate 104. Through the function of the baffle plate 104, not only can the flow direction of the gaseous refrigerant be guided, but also the gaseous refrigerant discharged through the air hole 1021 will produce a deflection and liquid blocking effect and collision filtration effect after hitting the baffle plate 104, thereby enabling the gaseous refrigerant entering the gas channel 105 to further achieve gas-liquid separation, thereby further avoiding the phenomenon of liquid being drawn into the air by the air conditioning unit.

[0046] According to a preferred embodiment, each chamber 103 has a baffle plate 104 on its outer side of the porous baffle 102, and each chamber 103 has a gas channel 105 formed on its side, with the gas channels 105 separated from each other. Figure 2 and Figure 6 As shown. Specifically, when the gas-liquid separation and gas guiding device has two chambers 103, a first baffle plate is provided on the outside of the porous baffle 102 of the first chamber, and a second baffle plate is provided on the outside of the porous baffle 102 of the second chamber. In the preferred embodiment of the gas-liquid separation and gas guiding device, a baffle plate 104 is provided on the outside of the porous baffle 102 of each chamber 103, and a gas channel 105 is formed on the side of each chamber 103, so that the gaseous refrigerant discharged through each chamber 103 can be further separated into gas and liquid; on the other hand, the gas channels 105 are separated from each other, so as to avoid the mutual influence of the flow direction of the gaseous refrigerant in each gas channel 105, and also to ensure the gas-liquid separation effect of the gaseous refrigerant in each gas channel 105.

[0047] According to a preferred embodiment, the baffle plate 104 and the porous baffle plate 102 are spaced apart, and adjacent baffle plates 104 are spaced apart, forming a gas channel 105 between the baffle plate 104 and the porous baffle plate 102, and / or between adjacent baffle plates 104. Figure 2 and Figure 6 As shown. Preferably, the air baffle 104 has an L-shaped structure, and one end of the air baffle 104 is fixedly connected to the porous baffle 102, as shown. Figure 2 and Figure 6As shown. In this preferred embodiment, the gas-liquid separation and gas guiding device has external baffles 104 above the openings of the porous baffles 102 on both sides. The baffles 104 are L-shaped. The gaseous refrigerant discharged from the chamber 103 is deflected and blocked by the baffles 104. After collision filtration, the separated liquid refrigerant is guided and gathered to slide onto the inner wall of the baffles 104 into the liquid-filled area. The separated gaseous refrigerant is then guided downward and flows back to the outlet pipe 205 and discharged through the outlet, further realizing gas-liquid separation and ensuring that the gas separated from the gas-liquid separation and gas guiding device has no liquid phase components, avoiding liquid carryover during gas intake.

[0048] The liquid separation and gas guiding device in this embodiment has a compact structure. When used in a falling film evaporator, it can ensure that the gaseous refrigerant evaporated from each falling film zone is discharged in a timely manner without changing the external dimensions of the heat exchanger 201. At the same time, the gas-liquid separation can be further achieved through the baffle plate 104's flow blocking and collision filtration, ensuring that the gaseous refrigerant separated from the gas-liquid separation and gas guiding device has no liquid phase components.

[0049] Example 2

[0050] This embodiment provides a detailed description of the falling film evaporator of the present invention.

[0051] The falling film evaporator of this embodiment includes the gas-liquid separation and gas guiding device of any of the technical solutions in Embodiment 1. For example... Figure 5 and Figure 6 As shown, the falling film evaporator also includes a liquid distributor 202, a shell 203, a liquid inlet pipe 204, a gas outlet pipe 205, and a tube sheet 206. The structure and function of the liquid distributor 202, shell 203, liquid inlet pipe 204, gas outlet pipe 205, and tube sheet 206 are the same as those in the prior art, and will not be described again here. Preferably, the gas-liquid separation and gas guiding device is located below the liquid distributor 202.

[0052] The falling film evaporator of this embodiment includes a gas-liquid separation and gas guiding device according to any of the technical solutions in this embodiment. The gas-liquid separation and gas guiding device can discharge the gaseous refrigerant generated by heat exchange in each chamber 103 in a timely manner, thereby improving the uniformity and stability of liquid distribution in each falling film zone, and thus effectively improving the heat exchange efficiency of the falling film evaporator.

[0053] The vaporization process of the falling film evaporator in this embodiment is described in detail below: The liquid refrigerant entering through the liquid inlet pipe 204 enters the liquid distributor 202. The liquid refrigerant dripping from the liquid distributor 202 first enters the first falling film zone for heat exchange. After heat exchange, the liquid refrigerant gathers on the liquid distribution plate 102. The liquid distribution plate 102 is provided with uniform openings. The liquid refrigerant drips more evenly into the second falling film zone and undergoes heat exchange again, and so on. Meanwhile, the gaseous refrigerant generated in each falling film zone flows upward to the top of each chamber 103 and is discharged through the air holes 1021 on the porous baffle 102 on the side of each chamber 103 to improve the uniformity and stability of the refrigerant droplets dripping from each chamber 103, thereby effectively improving the heat exchange efficiency of the falling film evaporator.

[0054] Example 3

[0055] This embodiment provides a detailed description of the air conditioner of the present invention.

[0056] The air conditioner of this embodiment includes a falling film evaporator according to any of the technical solutions in Embodiment 3. The remaining structure of the air conditioner is the same as that of the prior art, and will not be described in detail here.

[0057] The air conditioner in this embodiment includes a falling film evaporator according to any of the technical solutions in embodiment 3. Since the heat exchange efficiency of the falling film evaporator is improved, the performance of the air conditioner can be improved.

[0058] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A gas-liquid separation and gas guiding device, characterized in that, It includes a liquid distribution plate (101) and a porous baffle (102), wherein the liquid distribution plate (101) is disposed in the falling film zone of the falling film evaporator, and the porous baffle (102) is disposed on the side of the liquid distribution plate (101). The number of liquid equalization plates (101) is at least two, and the liquid equalization plates (101) are spaced apart. The liquid equalization plates (101) and the porous baffles (102) enclose at least two chambers (103) that are separated from each other. The heat exchange tubes (201) of the falling film evaporator are located in the chambers (103). Each of the chambers (103) has vent holes (1021) on the side of the porous baffles (102).

2. The gas-liquid separation and gas guiding device according to claim 1, characterized in that, The liquid distribution plate (101) is provided with liquid distribution holes, through which the liquid refrigerant in the chamber (103) flows out, and the flow velocity of the liquid refrigerant in the chamber (103) through the liquid distribution holes is 0.1 to 1.5 m / s, and the flow velocity of the gaseous refrigerant in the chamber (103) through the gas holes (1021) is 2 to 3 m / s.

3. The gas-liquid separation and gas guiding device according to claim 2, characterized in that, The opening size of the vent (1021) is 1.9 to 2.6 mm, and the distance between two adjacent vents (1021) is 17 to 24 mm.

4. The gas-liquid separation and gas guiding device according to claim 2, characterized in that, The pores (1021) are evenly distributed on the upper side of each of the chambers (103).

5. The gas-liquid separation and gas guiding device according to any one of claims 1 to 4, characterized in that, It also includes an air baffle (104), which is located outside the porous baffle (102) and forms a gas channel (105) with the porous baffle (102).

6. The gas-liquid separation and gas guiding device according to claim 5, characterized in that, Each of the chambers (103) has a perforated baffle (102) with an air baffle (104) on its outer side, and each of the chambers (103) has a gas passage (105) on its side, and the gas passages (105) are separated from each other.

7. The gas-liquid separation and gas guiding device according to claim 6, characterized in that, The baffle plate (104) is spaced apart from the porous baffle plate (102), and two adjacent baffle plates (104) are spaced apart, so that the gas channel (105) is formed between the baffle plate (104) and the porous baffle plate (102) and / or between two adjacent baffle plates (104).

8. The gas-liquid separation and gas guiding device according to claim 7, characterized in that, The air baffle (104) has an L-shaped structure, and one end of the air baffle (104) is fixedly connected to the porous baffle (102).

9. A falling film evaporator, characterized in that, The gas-liquid separation and gas guiding device includes any one of claims 1 to 8.

10. An air conditioner, characterized in that, Includes the falling film evaporator as described in claim 9.

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