Falling film evaporator and its liquid distributor, air conditioning system

Abstract

The disclosure provides a falling film evaporator, a liquid distributor thereof, and an air conditioning system. The liquid distributor comprises a liquid distributor body provided with a plurality of liquid outlets, at least part of the liquid outlets are adjustable liquid outlets switchably provided in a closed state and a conducting state, the liquid distributor body is configured to disperse liquid refrigerant to the remaining liquid outlets out of the adjustable liquid outlets in the closed state; and an adjusting component configured to adjust the number of the adjustable liquid outlets in the conducting state on the liquid distribution component. The falling film evaporator comprises a shell, the aforementioned liquid distributor arranged in the shell, and heat exchange pipes arranged below the liquid distributor; wherein the liquid distributor is configured to adjust the number of the heat exchange pipes in heat exchange with the liquid refrigerant by adjusting the number of the adjustable liquid outlets in the conducting state on the liquid distribution component. The air conditioning system comprises the aforementioned falling film evaporator. The falling film evaporator and the liquid distributor thereof can adjust the liquid distribution according to the working condition change of the air conditioning system, so as to adjust the heat exchange capacity.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioning, in particular to a falling-film evaporator, a liquid distributor thereof, and an air conditioning system. BACKGROUND

[0002] In the current commercial air conditioning refrigeration system, the water system components mainly include evaporators and condensers. The commonly used structural forms of the evaporators include falling-film evaporators, flooded evaporators, and dry evaporators.

[0003] Among these kinds of evaporators, the falling-film evaporator has the highest heat exchange efficiency and has the advantages of saving refrigerant, uniform heat exchange, high space utilization, and low suction liquid entrainment.

[0004] In the cold water system unit, the falling-film evaporator structure is widely used. The liquid distributor is usually designed according to the maximum working condition. However, during the operation of the unit, the distribution capacity of the liquid distributor cannot be optimized due to the unchanged structure of the liquid distributor with the fluctuation of the working condition. That is, when the working condition changes to a small load, the refrigerant circulation flow rate will also decrease, the flow rate of the liquid column after the distribution of the liquid distributor will decrease, and then the flow rate of the refrigerant reaching the surface of the heat exchange tube will also be low. The number of heat exchange tube rows covered by the liquid column will also decrease, resulting in a decrease in the heat exchange capacity. SUMMARY

[0005] The purpose of the present disclosure is to provide a falling-film evaporator and a liquid distributor thereof capable of adjusting the liquid distribution according to the working condition change of an air conditioning system, and an air conditioning system adopting the falling-film evaporator.

[0006] A first aspect of the present disclosure provides a liquid distributor of a falling-film evaporator, comprising:

[0007] a liquid distributor body provided with a plurality of liquid outlets, at least part of the liquid outlets are adjustable liquid outlets switchably provided in a closed state and an open state, the liquid distributor body is configured to disperse liquid refrigerant to the remaining liquid outlets outside the adjustable liquid outlets in the closed state to flow out; and

[0008] an adjusting component configured to adjust the number of the adjustable liquid outlets in the open state on the liquid distributor body.

[0009] According to some embodiments of the present disclosure, the liquid distributor body comprises:

[0010] a first liquid distribution component, at least part of the adjustable liquid outlets are arranged on the first liquid distribution component; and / or

[0011] a second liquid distribution component, at least part of the adjustable liquid outlets are arranged on the second liquid distribution component, and the second liquid distribution component is movably arranged relative to the first liquid distribution component.

[0012] The adjusting component is configured to adjust the position of the second liquid distribution component relative to the first liquid distribution component to adjust the number of the adjustable liquid outlets of the first liquid distribution component in the conducting state and / or adjust the number of the adjustable liquid outlets of the second liquid distribution component in the conducting state.

[0013] According to some embodiments of the present disclosure,

[0014] The first liquid distribution component is distributed with a plurality of the adjustable liquid outlets along the width direction of the liquid distributor body, and / or the second liquid distribution component is distributed with a plurality of the adjustable liquid outlets along the width direction of the liquid distributor body.

[0015] The second liquid distribution component is movably arranged relative to the first liquid distribution component along the width direction of the liquid distributor body.

[0016] According to some embodiments of the present disclosure,

[0017] The two oppositely arranged second liquid distribution components are movably arranged on the two sides of the first liquid distribution component along the width direction of the liquid distributor body.

[0018] The adjusting component is configured to drive the two second liquid distribution components to move towards or away from each other along the width direction of the liquid distributor body to adjust the number of the adjustable liquid outlets of the first liquid distribution component in the conducting state and / or the number of the adjustable liquid outlets of the second liquid distribution component in the conducting state.

[0019] According to some embodiments of the present disclosure, the adjusting component comprises a slider movably arranged along the length direction of the liquid distributor body and abutting against the first liquid distribution component and / or the second liquid distribution component, the shape of the slider and the first liquid distribution component and / or the second liquid distribution component is configured to drive the first liquid distribution component and / or the second liquid distribution component to move along the width direction of the liquid distributor body by moving the slider along the length direction of the liquid distributor body.

[0020] According to some embodiments of the present disclosure, the two oppositely arranged second liquid distribution components are movably arranged on the two sides of the first liquid distribution component along the width direction of the liquid distributor body, and the slider is arranged between the two second liquid distribution components, the shape of the slider and the two second liquid distribution components is configured to apply a first force to the two second liquid distribution components to drive the two second liquid distribution components to move away from each other along the width direction of the liquid distributor body by moving the slider along the length direction of the liquid distributor body.

[0021] According to some embodiments of the present disclosure, the slider is wedge-shaped, and a corresponding bevel is arranged on the second liquid distribution component to slidingly cooperate with the slider.

[0022] According to some embodiments of the present disclosure,

[0023] A groove is arranged on the slider, and a protrusion is arranged on the second liquid distribution component to fit the groove.

[0024] A protrusion is arranged on the slider, and a groove is arranged on the second liquid distribution component to fit the protrusion.

[0025] The slider is slidingly arranged on the second liquid distribution component through the groove and the protrusion, and the shapes of the groove and the protrusion are configured to apply the first force and a second force opposite to the direction of the first force to the two second liquid distribution components by moving the slider along the length direction of the liquid distributor body, and the second force is configured to make the two second liquid distribution components close to each other along the width direction of the liquid distributor body.

[0026] According to some embodiments of the present disclosure, a reset component is further included, which is configured to apply a second force opposite to the direction of the first force to the second liquid distribution component to make the two second liquid distribution components close to each other along the width direction of the liquid distributor body.

[0027] According to some embodiments of the present disclosure, the first liquid distribution component slidingly cooperates with the second liquid distribution component, and at least part of the contact surface between the first liquid distribution component and the second liquid distribution component forms a seal to prevent the liquid coolant from flowing out through the gap between the first liquid distribution component and the second liquid distribution component.

[0028] According to some embodiments of the present disclosure, the second liquid distribution component includes an integrally formed upper cover and a lower cover, the upper cover is located above the first liquid distribution component and forms a flow channel for the liquid coolant to flow between the upper cover and the first liquid distribution component, and the lower cover is located below the first liquid distribution component and forms a seal between the lower cover and the lower surface of the first liquid distribution component.

[0029] The second aspect of the present disclosure provides a falling film evaporator, comprising:

[0030] A shell;

[0031] The liquid distributor of the first aspect of the present disclosure is arranged in the shell; and

[0032] A heat exchange tube arranged below the liquid distributor;

[0033] The liquid distributor is configured to adjust the number of heat exchange tubes that exchange heat with the liquid refrigerant by adjusting the number of adjustable liquid outlets in the conductive state on the liquid distribution component.

[0034] According to some embodiments of this disclosure, a liquid inlet pipe is also included, which is disposed on the housing and configured to introduce liquid refrigerant into the distributor body.

[0035] According to some embodiments of this disclosure, it also includes:

[0036] An exhaust pipe, disposed on the housing, is configured to exhaust gaseous refrigerant from the housing; and

[0037] An air equalization component is disposed between the liquid distributor and the air outlet pipe, and the air equalization component is provided with multiple air equalization holes.

[0038] A third aspect of this disclosure provides an air conditioning system including the falling film evaporator described in the second aspect of this disclosure.

[0039] According to some embodiments of this disclosure

[0040] The falling film evaporator includes a liquid inlet pipe, which is disposed on the outer shell and configured to introduce liquid refrigerant into the liquid distributor body;

[0041] The air conditioning system also includes a pressure regulating device, which is connected to the liquid inlet pipe and configured to regulate the pressure of the liquid refrigerant delivered to the distributor body.

[0042] In the liquid distributor of the falling film evaporator provided in this embodiment, when the air conditioning system switches operating conditions or the refrigerant circulation flow changes, the number of adjustable liquid outlets in the conductive state on the liquid distributor body can be adjusted by the adjustment component, so that the distribution capacity of the liquid distributor is in the optimal state, thereby adjusting the coverage area of ​​the refrigerant liquid column and the heat exchange area of ​​the liquid refrigerant, which is conducive to meeting the heat exchange requirements of different levels and reducing the impact of operating condition changes on the heat exchange performance of the falling film evaporator.

[0043] The falling film evaporator provided in this embodiment has the advantages of the liquid distributor provided in this embodiment. Furthermore, since the coverage area of ​​the refrigerant liquid column on the liquid distributor is adjustable, the layout area of ​​the heat exchange tubes is not limited. The heat exchange tubes can fill the entire area below the liquid distributor, achieving a seamless tube layout and maximizing space utilization.

[0044] The air conditioning system provided in this disclosure has the advantages of the falling film evaporator provided in this disclosure.

[0045] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0046] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0047] Figure 1 This is a schematic diagram of the structure of a liquid distributor according to some embodiments of this disclosure.

[0048] Figure 2 This is a schematic diagram of the structure of a falling film evaporator according to some embodiments of this disclosure.

[0049] Figure 3 for Figure 2 The diagram shown is a side view of a falling film evaporator, with the heat exchange tubes omitted.

[0050] Figure 4 for Figure 2 The diagram shows a side view of a falling film evaporator, which includes the heat exchange tubes.

[0051] Figure 5 for Figure 2 The diagram shows the internal structure of a falling film evaporator.

[0052] Figure 6 for Figure 2 The diagram shows the internal structure of a falling film evaporator, including the liquid outlet.

[0053] Figure 7 for Figure 2 The diagram shows a top view of the internal structure of a falling film evaporator.

[0054] Figure 8 for Figure 2 The diagram shows a top view of the internal structure of a falling film evaporator.

[0055] Figure 9 for Figure 2 A partial axial cross-sectional view of some embodiments of the falling film evaporator is shown.

[0056] Figure 10 for Figure 2 A partial side view of another embodiment of the falling film evaporator is shown.

[0057] Figure 11 This is a schematic diagram of the structure of an air conditioning system according to some embodiments of this disclosure.

[0058] Figure 12 This is a schematic diagram showing the connection relationship between the falling film evaporator and the pressurization device in an air conditioning system according to some embodiments of this disclosure.

[0059] Figures 1 to 10 In the drawings, each part is denoted by a reference numeral, respectively:

[0060] 1. falling film evaporator; 111, first liquid distribution member; 112, second liquid distribution member; 113, adjusting member; 1131, slider; 114, adjustable liquid outlet; 115, reset member; 12, shell; 13, heat exchange tube; 14, liquid blocking plate; 141, gas equalizing hole; 15, liquid discharge pipe; 16, gas outlet pipe; 17, liquid inlet pipe; 2, pressure adjusting device; 21, pressure booster; 22, valve; 3, throttling device; 4, condenser; 5, compressor; C, refrigerant liquid column; G, groove; S, protrusion. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0062] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure. Meanwhile, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The technologies, methods, and devices known to those skilled in the related art can not be discussed in detail, but under appropriate circumstances, these technologies, methods, and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] In the description of the present disclosure, it should be understood that the use of the words "first", "second", and the like to qualify parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0064] In the description of the present disclosure, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present disclosure and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the protection scope of the present disclosure; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0065] As shown in Figures 1 to 10 some embodiments of the present disclosure provide a liquid distributor of falling film evaporator, comprising a liquid distributor body and an adjusting component 113.

[0066] The liquid distributor body is provided with a plurality of liquid outlets. At least part of the liquid outlets are adjustable liquid outlets 114 which can be switched between closed state and open state, and the liquid distributor body is configured to disperse the liquid refrigerant to the remaining liquid outlets out of the closed adjustable liquid outlets 114.

[0067] According to the different distribution requirements of the liquid distributor, the plurality of liquid outlets provided on the liquid distributor body can all be adjustable liquid outlets, or part of them can be adjustable liquid outlets and part of them can be always open liquid outlets.

[0068] The adjusting component 113 is configured to adjust the number of adjustable liquid outlets 114 in the open state on the liquid distributor body.

[0069] The liquid distributor of falling film evaporator provided by the embodiments of the present disclosure can adjust the number of adjustable liquid outlets in the open state on the liquid distributor body through the adjusting component when the air conditioning system switches the working condition and the refrigerant circulation flow changes, so that the distribution capacity of the liquid distributor is in the best state, thereby adjusting the coverage area of the refrigerant liquid column and the heat exchange area of the liquid refrigerant, which is beneficial to meet the heat exchange requirements of different levels and reduce the influence of working condition changes on the heat exchange performance of the falling film evaporator.

[0070] For example, if the refrigerant flow in the air conditioning system is large under the current working condition, the number of adjustable liquid outlets can be increased to control the flow rate of the refrigerant in the best state required for liquid distribution.

[0071] In some embodiments, the liquid distributor body comprises a first liquid distribution component 111 and / or a second liquid distribution component 112. The at least partially adjustable liquid outlets 114 are arranged on the first liquid distribution component 111 and / or the at least partially adjustable liquid outlets 114 are arranged on the second liquid distribution component 112, which is movably arranged relative to the first liquid distribution component 111. The adjustment component 113 is configured to adjust the position of the second liquid distribution component 112 relative to the first liquid distribution component 111 to adjust the number of the adjustable liquid outlets 114 in the open state on the first liquid distribution component 111 and / or to adjust the number of the adjustable liquid outlets 114 in the open state on the second liquid distribution component 112.

[0072] In the above embodiments, the second liquid distribution component 112 is movably arranged relative to the first liquid distribution component 111. When the relative position of the first liquid distribution component 111 and the second liquid distribution component 112 changes, some of the adjustable liquid outlets 114 are shielded, switched from the open state to the closed state, or unshielded, switched from the closed state to the open state, thereby adjusting the number of the adjustable liquid outlets 114 in the open state.

[0073] In some embodiments, a plurality of adjustable liquid outlets 114 are distributed along the width direction of the liquid distributor body on the first liquid distribution component 111 and / or a plurality of adjustable liquid outlets 114 are distributed along the width direction of the liquid distributor body on the second liquid distribution component 112. The second liquid distribution component 112 is movably arranged relative to the first liquid distribution component 111 along the width direction of the liquid distributor body.

[0074] In the above embodiments, when the second liquid distribution component 112 moves relative to the first liquid distribution component 111 along the width direction of the liquid distributor body, the number of the adjustable liquid outlets 114 in the open state along the width direction of the liquid distributor body can be adjusted.

[0075] In some embodiments, as shown in Figure 1 , Figure 5 and Figure 6 , two oppositely arranged second liquid distribution components 112 are movably arranged on both sides of the first liquid distribution component 111 along the width direction of the liquid distributor body. The adjustment component 113 is configured to drive the two second liquid distribution components 112 to move towards or away from each other along the width direction of the liquid distributor body to adjust the number of the adjustable liquid outlets 114 in the open state on the first liquid distribution component 111 and / or the number of the adjustable liquid outlets 114 in the open state on the second liquid distribution component 112.

[0076] As shown in Figure 1 , Figure 5 and Figure 6As shown, the first liquid distribution component 111 and the second liquid distribution component 112 can be provided with adjustable liquid outlets 114. At some positions during the process of the two second liquid distribution components 112 moving towards or away from each other, at least some of the adjustable liquid outlets 114 on the first liquid distribution component 111 and the second liquid distribution component 112 are in a position corresponding to each other, so as to be in a conducting state. At other positions during the process of the two second liquid distribution components 112 moving towards or away from each other, at least some of the adjustable liquid outlets 114 on the first liquid distribution component 111 are blocked by the second liquid distribution component 112, and at least some of the adjustable liquid outlets 114 on the second liquid distribution component 112 are blocked by the first liquid distribution component 111.

[0077] In the above embodiment, by adjusting the component 113, not only can the two second liquid distribution components 112 be driven to move towards or away from each other along the width direction of the liquid distributor body, so as to change the number of adjustable liquid outlets 114 of the first liquid distribution component 111 and the second liquid distribution component 112 in the conducting state, but also the size of the liquid distributor body in the width direction of the liquid distributor body can be changed, so as to change the coverage area of the refrigerant liquid column.

[0078] In some embodiments, the adjusting component 113 includes a slider 1131 movably arranged along the length direction of the liquid distributor body and abutting against the first liquid distribution component 111 and / or the second liquid distribution component 112, and the shape of the slider 1131 and the first liquid distribution component 111 and / or the second liquid distribution component 112 is configured to drive the first liquid distribution component 111 and / or the second liquid distribution component 112 to move along the width direction of the liquid distributor body by moving the slider 1131 along the length direction of the liquid distributor body.

[0079] In some embodiments, the adjusting component 113 includes a slider 1131. Along the width direction of the liquid distributor body, two oppositely arranged second liquid distribution components 112 are movably arranged on both sides of the first liquid distribution component 111, and the slider 1131 is arranged between the two second liquid distribution components 112. The shape of the slider 1131 and the two second liquid distribution components 112 is configured to apply a first force to the two second liquid distribution components 112 to move the two second liquid distribution components 112 away from each other along the width direction of the liquid distributor body by moving the slider 1131 along the length direction of the liquid distributor body.

[0080] The number of sliders 1131 in the liquid distributor can be one or more. For example, Figure 1 、 Figure 5 and Figure 6 In the embodiment shown, the two sliders 1131 are arranged at intervals along the length direction of the liquid distributor body.

[0081] In some embodiments, as Figure 1 、 Figure 5 and Figure 6As shown, the slider 1131 is wedge-shaped, and the second liquid distribution component 112 is correspondingly provided with a bevel that is in sliding cooperation with the slider 1131.

[0082] In the above embodiment, when the slider 1131 moves along the length direction of the liquid distributor body, the wedge-shaped slider 1131 can apply the first force to the bevel of the second liquid distribution component 112, so as to make the two second liquid distribution components 112 move away from each other along the width direction of the liquid distributor body.

[0083] In some embodiments, as shown in FIG. 1B, the liquid distributor further comprises a reset component 115, which is configured to apply a second force to the second liquid distribution component 112, the second force being opposite to the first force in direction, so as to make the two second liquid distribution components 112 move close to each other along the width direction of the liquid distributor body. Figure 9 As shown, the slider 1131 is provided with a groove G, and the second liquid distribution component 112 is provided with a protrusion S that is adapted to the groove G; or, the slider 1131 is provided with a protrusion S, and the second liquid distribution component 112 is provided with a groove G that is adapted to the protrusion S. The slider 1131 is slidably arranged on the second liquid distribution component 112 through the groove G and the protrusion S, and the shape of the groove G and the protrusion S is configured to apply the first force and the second force opposite to the first force in direction to the two second liquid distribution components 112 by moving the slider 1131 along the length direction of the liquid distributor body, and the second force is configured to make the two second liquid distribution components 112 move close to each other along the width direction of the liquid distributor body.

[0084] In the above embodiment, the groove G and the protrusion S form a structure similar to a guide rail, and when the slider 1131 moves in different directions along the length direction of the liquid distributor body, the groove G and the protrusion S limit each other, can apply the first force that makes the two second liquid distribution components 112 move away from each other and the second force that makes the two second liquid distribution components 112 move close to each other to the two second liquid distribution components 112, realize the bidirectional adjustment of the positional relationship between the two second liquid distribution components 112, and thus realize the bidirectional adjustment of the number of the adjustable liquid outlets 114 in the conducting state.

[0085] For example, for the wedge-shaped slider 1131, the groove G or the protrusion S can be arranged at the bottom of the wedge-shaped slider 1131, and the protrusion S or the groove G adapted thereto can be arranged at the position of the bevel of the two second liquid distribution components and have the same extension direction as the bevel.

[0086] The slider 1131 can only transmit the first force to the two second liquid distribution components 112 in the sliding process, and the two second liquid distribution components 112 can be made to move close to each other along the width direction of the liquid distributor body by arranging a corresponding reset component 115. In some embodiments, as shown in FIG. 1B, the liquid distributor further comprises a reset component 115, which is configured to apply a second force to the second liquid distribution component 112, the second force being opposite to the first force in direction, so as to make the two second liquid distribution components 112 move close to each other along the width direction of the liquid distributor body. Figure 10 As shown, the slider 1131 is provided with a groove G, and the second liquid distribution component 112 is provided with a protrusion S that is adapted to the groove G; or, the slider 1131 is provided with a protrusion S, and the second liquid distribution component 112 is provided with a groove G that is adapted to the protrusion S. The slider 1131 is slidably arranged on the second liquid distribution component 112 through the groove G and the protrusion S, and the shape of the groove G and the protrusion S is configured to apply the first force and the second force opposite to the first force in direction to the two second liquid distribution components 112 by moving the slider 1131 along the length direction of the liquid distributor body, and the second force is configured to make the two second liquid distribution components 112 move close to each other along the width direction of the liquid distributor body.

[0087] The reset component 115 can be an elastic component such as a spring connected between the two second liquid distribution components 112, or other forms capable of applying a second force to the second liquid distribution components 112. By providing the reset component 115, the two second liquid distribution components 112 can be moved closer to each other along the width direction of the liquid distributor body. By adjusting the cooperation of the adjustment component 113 and the reset component 115, the position relationship between the two second liquid distribution components 112 can be adjusted in two directions, thereby adjusting the number of adjustable liquid outlets 114 in the on state in two directions.

[0088] In some embodiments, the first liquid distribution component 111 is in sliding cooperation with the second liquid distribution component 112, and at least part of the contact surface between the first liquid distribution component 111 and the second liquid distribution component 112 forms a seal to prevent the liquid refrigerant from flowing out through the gap between the first liquid distribution component 111 and the second liquid distribution component 112.

[0089] In some embodiments, the second liquid distribution component 112 includes an integrally formed upper cover and a lower cover. The upper cover is located above the first liquid distribution component 111 and forms a flow channel for the liquid refrigerant to flow between the first liquid distribution component 111 and the upper cover, and the lower cover is located below the first liquid distribution component 111 and forms a seal between the lower surface of the first liquid distribution component 111 and the lower cover.

[0090] In the above embodiments, a seal or a gasket can be provided to form a seal between the first liquid distribution component 111 and the second liquid distribution component 112.

[0091] As shown in FIG. 1, some embodiments of the present disclosure also provide a falling film evaporator including a shell 12, a liquid distributor provided by the embodiments of the present disclosure, and heat exchange tubes 13. Figures 2 to 10 The liquid distributor is arranged in the shell 12. The heat exchange tubes 13 are arranged below the liquid distributor. The liquid distributor is configured to adjust the number of heat exchange tubes 13 in heat exchange with the liquid refrigerant by adjusting the number of adjustable liquid outlets 114 in the on state on the first liquid distribution component 111.

[0092] The falling film evaporator provided by the embodiments of the present disclosure has the advantages of the liquid distributor provided by the embodiments of the present disclosure. Since the coverage area of the refrigerant liquid column on the liquid distributor is adjustable, the layout area of the heat exchange tubes is not limited, the heat exchange tubes can be arranged in the entire area below the liquid distributor, no dead angle is formed, and a large space utilization rate is achieved.

[0093] For example, for a falling film evaporator with a liquid distributor having a width of 1 m and a length of 1 m, the number of adjustable liquid outlets 114 in the on state can be adjusted from 0 to 1000, and the number of heat exchange tubes 13 in heat exchange with the liquid refrigerant can be adjusted from 0 to 1000.

[0094] Figure 4 ​As shown in the falling film evaporator, in the axial section of the falling film evaporator, a plurality of rows of heat exchange tubes are arranged in the entire area below the liquid distributor, and the width of the liquid distributor body can be adjusted to adjust the number of adjustable liquid outlets 114 in the on state and the coverage area of the refrigerant liquid column C.

[0095] In some embodiments, as shown in the falling film evaporator further comprises a liquid inlet pipe 17. The liquid inlet pipe 17 is arranged on the shell 12 and is configured to guide the liquid refrigerant into the liquid distributor body. Figures 2 to 8

[0096] In some embodiments, as shown in the falling film evaporator further comprises an air outlet pipe 16 and a liquid blocking plate 14. The air outlet pipe 16 is arranged on the shell 12 and is configured to guide the gaseous refrigerant out of the shell 12. The liquid blocking plate 14 is arranged between the liquid distributor and the air outlet pipe 16, and a plurality of air holes 141 are arranged on the liquid blocking plate 14. Figures 2 to 8

[0097] As shown in the embodiment, the plurality of air holes 141 of the liquid blocking plate 14 can be arranged along the length direction of the liquid distributor body. The liquid blocking plate 14 can also be provided with a relief hole for avoiding the liquid inlet pipe 17 and the adjusting component 113. The falling film evaporator can also comprise a liquid outlet pipe 15 for discharging the liquid refrigerant from the bottom of the falling film evaporator. Figures 2 to 8

[0098] As shown in the falling film evaporator, some embodiments of the present disclosure also provide an air conditioning system comprising the aforementioned falling film evaporator 1. The air conditioning system provided by the embodiments of the present disclosure has the advantages of the falling film evaporator provided by the embodiments of the present disclosure. Figure 11 Figure 12 In some embodiments, the falling film evaporator 1 comprises a liquid inlet pipe 17 arranged on the shell 12 and configured to guide the liquid refrigerant into the liquid distributor body. The air conditioning system further comprises a pressure regulating device 2 connected with the liquid inlet pipe 17 and configured to regulate the pressure of the liquid refrigerant delivered to the liquid distributor body.

[0099] As shown in the falling film evaporator, some embodiments of the present disclosure also provide an air conditioning system comprising the aforementioned falling film evaporator 1. The air conditioning system provided by the embodiments of the present disclosure has the advantages of the falling film evaporator provided by the embodiments of the present disclosure.

[0100] As shown in the falling film evaporator, some embodiments of the present disclosure also provide an air conditioning system comprising the aforementioned falling film evaporator 1. The air conditioning system provided by the embodiments of the present disclosure has the advantages of the falling film evaporator provided by the embodiments of the present disclosure. Figure 11 As shown in the falling film evaporator, some embodiments of the present disclosure also provide an air conditioning system comprising the aforementioned falling film evaporator 1. The air conditioning system provided by the embodiments of the present disclosure has the advantages of the falling film evaporator provided by the embodiments of the present disclosure.

[0101] The pressure regulating device 2 can be used to increase or decrease the flow rate of the liquid refrigerant. Considering that a low flow rate of the refrigerant to the surface of the heat exchange tube will lead to a decrease in heat exchange capacity, the pressure regulating device 2 can be used to increase the flow rate of the liquid refrigerant to the surface of the heat exchange tube, thereby improving the heat exchange capacity of the falling film evaporator.​​​​Figure 12 As shown, the pressure regulating device 2 can include a pressure booster 21, which is used to supplement pressure to the liquid refrigerant introduced into the distributor body, so as to increase the flow rate of the liquid refrigerant in the distributor to an optimal state matched with the current working condition, thereby facilitating the falling film evaporator to flexibly cope with the change of the working condition and to maximize the heat exchange performance, and playing a role of saving refrigerant and high-efficiency heat exchange. The pressure regulating device 2 can further include a valve 22 arranged between the pressure booster 21 and the liquid inlet pipe 17, which is used to control the on-off of the liquid refrigerant between the pressure booster 21 and the falling film evaporator 1.

[0102] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, but not limit the same; although the present disclosure has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present disclosure can be modified or some technical features can be replaced by equivalent ones, which should be covered in the technical solution range of the present disclosure.

Claims

1. A liquid distributor for a falling film evaporator, characterized in that, include: The liquid distributor body is provided with multiple liquid outlets, at least some of which are adjustable liquid outlets (114) that can be switched between a closed state and a conductive state. The liquid distributor body is configured to distribute liquid refrigerant to the remaining liquid outlets other than the adjustable liquid outlet (114) in the closed state. The adjusting component (113) is configured to adjust the number of adjustable outlets (114) on the liquid distributor body that are in the conducting state.

2. The liquid distributor according to claim 1, characterized in that, The liquid distributor body includes: The first liquid distribution component (111) has at least a portion of the adjustable liquid outlet (114) disposed on the first liquid distribution component (111); and / or The second liquid distribution component (112) has at least a portion of the adjustable liquid outlet (114) disposed on the second liquid distribution component (112), and the second liquid distribution component (112) is movably disposed relative to the first liquid distribution component (111); The adjusting component (113) is configured to adjust the position of the second liquid distribution component (112) relative to the first liquid distribution component (111) to adjust the number of adjustable liquid outlets (114) on the first liquid distribution component (111) in the conducting state and / or adjust the number of adjustable liquid outlets (114) on the second liquid distribution component (112) in the conducting state.

3. The liquid distributor according to claim 2, characterized in that, Along the width direction of the liquid distributor body, the first liquid distribution component (111) is provided with a plurality of adjustable liquid outlets (114), and / or, along the width direction of the liquid distributor body, the second liquid distribution component (112) is provided with a plurality of adjustable liquid outlets (114). Along the width direction of the liquid distributor body, the second liquid distribution component (112) is movably disposed relative to the first liquid distribution component (111).

4. The liquid distributor according to claim 3, characterized in that, Along the width direction of the liquid distributor body, two opposing second liquid distribution components (112) are movably disposed on both sides of the first liquid distribution component (111); The adjusting component (113) is configured to drive the two second liquid distribution components (112) to move closer to or further away from each other along the width direction of the liquid distributor body, so as to adjust the number of adjustable liquid outlets (114) of the first liquid distribution component (111) in the conducting state and / or the number of adjustable liquid outlets (114) of the second liquid distribution component (112) in the conducting state.

5. The liquid distributor according to claim 3, characterized in that, The adjusting component (113) includes a slider (1131) which is movably disposed along the length of the liquid distributor body and abuts against the first liquid distributor component (111) and / or the second liquid distributor component (112). The slider (1131) and the shapes of the first liquid distributor component (111) and / or the second liquid distributor component (112) are configured such that moving the slider (1131) along the length of the liquid distributor body causes the first liquid distributor component (111) and / or the second liquid distributor component (112) to move along the width of the liquid distributor body.

6. The liquid distributor according to claim 5, characterized in that, Along the width direction of the liquid distributor body, two opposing second liquid distribution components (112) are movably disposed on both sides of the first liquid distribution component (111), and the slider (1131) is disposed between the two second liquid distribution components (112). The slider (1131) and the two second liquid distribution components (112) are configured such that by moving the slider (1131) along the length direction of the liquid distributor body, a first force is applied to the two second liquid distribution components (112) to cause the two second liquid distribution components (112) to move away from each other along the width direction of the liquid distributor body.

7. The liquid distributor according to claim 6, characterized in that, The slider (1131) is wedge-shaped, and the second liquid distribution component (112) is provided with a corresponding inclined side that slides and engages with the slider (1131).

8. The liquid distributor according to claim 6, characterized in that, The slider (1131) is provided with a groove (G), and the second liquid distribution component (112) is provided with a protrusion (S) that matches the groove (G); or The slider (1131) is provided with a protrusion (S), and the second liquid distribution component (112) is provided with a groove (G) that is adapted to the protrusion (S). The slider (1131) is slidably disposed on the second liquid distribution component (112) via the groove (G) and the protrusion (S). The groove (G) and the protrusion (S) are configured to apply the first force and the second force opposite to the first force to the two second liquid distribution components (112) by moving the slider (1131) along the length direction of the liquid distributor body. The second force is configured to bring the two second liquid distribution components (112) closer to each other along the width direction of the liquid distributor body.

9. The liquid distributor according to claim 6, characterized in that, It also includes a reset component (115) configured to apply a second force to the second liquid distribution component (112) in the opposite direction to the first force, so that the two second liquid distribution components (112) move closer to each other along the width direction of the liquid distributor body.

10. The liquid distributor according to any one of claims 2 to 9, characterized in that, The first liquid distribution component (111) and the second liquid distribution component (112) are slidably engaged, and at least a portion of the contact surfaces between the first liquid distribution component (111) and the second liquid distribution component (112) form a seal to prevent liquid refrigerant from flowing out through the gap between the first liquid distribution component (111) and the second liquid distribution component (112).

11. The liquid distributor according to claim 10, characterized in that, The second liquid distribution component (112) includes an integrally formed upper cover and a lower cover. The upper cover is located above the first liquid distribution component (111) and forms a flow channel for liquid refrigerant to flow between the upper cover and the first liquid distribution component (111). The lower cover is located below the first liquid distribution component (111) and forms a seal between the lower surface of the first liquid distribution component (111).

12. A falling film evaporator, characterized in that, include: Outer shell (12); The liquid distributor according to any one of claims 1 to 11 is disposed within the housing (12); and Heat exchange tube (13) is located below the liquid distributor; The liquid distributor is configured to adjust the number of heat exchange tubes (13) that exchange heat with the liquid refrigerant by adjusting the number of adjustable liquid outlets (114) on the liquid distributor body that are in the conducting state.

13. The falling film evaporator according to claim 12, characterized in that, It also includes a liquid inlet pipe (17), which is disposed on the housing (12) and configured to introduce liquid refrigerant into the liquid distributor body.

14. The falling film evaporator according to claim 13, characterized in that, Also includes: An exhaust pipe (16) is disposed on the housing (12) and configured to exhaust gaseous refrigerant from the housing (12). and A gas equalization component (14) is disposed between the liquid distributor and the gas outlet pipe (16), and the gas equalization component (14) is provided with a plurality of gas equalization holes (141).

15. An air conditioning system, characterized in that, Includes the falling film evaporator (1) according to any one of claims 12 to 14.

16. The air conditioning system according to claim 15, characterized in that, The falling film evaporator (1) includes a liquid inlet pipe (17), which is disposed on the outer shell (12) and configured to introduce liquid refrigerant into the liquid distributor body; The air conditioning system also includes a pressure regulating device (2), which is connected to the liquid inlet pipe (17) and configured to regulate the pressure of the liquid refrigerant delivered to the liquid distributor body.

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