Evaporator

Abstract

An evaporator relates to the field of evaporators. The evaporator comprises an evaporator cylinder, a transverse partition plate connected into the evaporator cylinder and at least one vertical partition plate, the vertical partition plate is connected with the top face of the transverse partition plate and the inner wall of the evaporator cylinder, and the interior of the evaporator cylinder is divided into an air outlet cavity and an evaporation cavity by the transverse partition plate, the vertical partition plates divide the air outlet cavity into at least two air suction cavities which are sequentially arranged in the width direction of the evaporator barrel, compressor air suction pipes communicated with the air suction cavities are arranged at the top of the evaporator barrel, and a liquid inlet communicated with the evaporation cavity is formed in the center of the bottom of the evaporator barrel. A plurality of connecting holes communicated with the evaporation cavity and the air suction cavity are formed in the transverse partition plate, and the connecting holes and the compressor air suction pipe are staggered in the horizontal direction. According to the evaporator, the transverse partition plates and the vertical partition plates define the air suction cavities communicated with the air suction pipes of the compressors, so that the multiple compressors can operate at the same time, the refrigerating capacity of the compressors can be improved, and the air suction compression and refrigerating working condition adjusting range can be widened.

Description

Technical Field

[0001] The present application relates to the field of evaporators, and in particular, to an evaporator. Background Art

[0002] At present, when the evaporator of a large central air-conditioning unit needs a larger cooling capacity or a wider cooling condition adjustment range, it is often necessary to configure two or more compressors on one evaporator. At this time, two or more compressor suction pipes need to be set on the evaporator.

[0003] At present, the evaporator of the existing large central air-conditioning unit is equipped with dual / multi compressors. The evaporator air intake ports are evenly spaced along the axial direction (length direction) of the cylinder. At the same time, an air intake orifice plate, a baffle plate and a liquid inlet are independently set under each air intake port. At this time, the air intake ports are arranged in a line along the axis of the evaporator cylinder, resulting in a very long container length and a high aspect ratio (i.e., the ratio of length L to diameter D). The evaporator of this large central air-conditioning unit has the following defects: First, a large area of ​​air-conditioning main room is required to place the central air-conditioning unit, but due to the relatively small diameter of the evaporator, the space utilization rate of the air-conditioning main room is very low; second, due to the long length L of the evaporator, if a liquid inlet is set at the bottom of the evaporator, the liquid refrigerant entering from the bottom of the evaporator will be unevenly distributed along the length direction of the cylinder when it is initially distributed along the length direction of the cylinder, so that the refrigerant near the liquid inlet is distributed more, and the refrigerant distribution is less the farther away from the liquid inlet. The larger the aspect ratio, the more uneven the refrigerant distribution is, and the ... The large pressure drop in the direction leads to low heat exchange efficiency, affecting the heat exchange performance of the air conditioner host; third, two or more liquid inlets are set at the bottom of the evaporator, which requires two or more liquid inlet pipelines and multiple expansion valves, resulting in complex structure and cumbersome process, increasing the difficulty of piping and material costs, and also increasing the instability of the unit during operation; fourth, an independent orifice plate and baffle need to be set under each air intake port, which increases the manufacturing process and working hours, and the processing and manufacturing costs are also high; fifth, since the length L of the evaporator cylinder is very long, the production process requires a larger site, and transportation and on-site installation are more troublesome, that is, the costs of manufacturing, transportation, and installation are all very high. Utility Model Content

[0004] The purpose of the present application is to provide an evaporator, which encloses a horizontal partition and a vertical partition to form an air suction chamber connected to the air suction pipes of each compressor, so that multiple compressors can operate simultaneously, which can not only improve the refrigeration capacity of the compressor, but also improve the adjustment range of the air suction compression and refrigeration conditions.

[0005] This application is implemented as follows:

[0006] The present application provides an evaporator, which includes an evaporator cylinder, a transverse partition connected to the evaporator cylinder and at least one vertical partition, the vertical partitions are respectively connected to the top surface of the transverse partition and the inner wall of the evaporator cylinder, the transverse partition divides the interior of the evaporator cylinder into an air outlet chamber and an evaporation chamber arranged up and down, the vertical partition divides the air outlet chamber into at least two air intake chambers arranged in sequence along the width direction of the evaporator cylinder, the top of the evaporator cylinder is provided with a compressor intake pipe respectively connected to each intake chamber, the bottom center of the evaporator cylinder is provided with a liquid inlet connected to the evaporation chamber, a plurality of connecting holes connecting the evaporation chamber and the intake chamber are opened on the transverse partition, and the connecting holes and the compressor intake pipe are staggered in the horizontal direction.

[0007] In some optional embodiments, a wire mesh demister is provided on the top of the evaporation chamber.

[0008] In some optional embodiments, an inverted V-shaped liquid balancing plate is provided at the bottom of the evaporation chamber, a plurality of liquid balancing holes are opened on the liquid balancing plate, and the liquid balancing holes and the liquid inlet are staggered in the horizontal direction.

[0009] In some optional embodiments, a plurality of flow holes connecting two adjacent suction cavities are formed on the vertical partition plate, and the flow holes and the compressor suction pipes are staggered in the horizontal direction.

[0010] In some optional embodiments, the pore size of the flow hole gradually increases as it moves away from the liquid inlet.

[0011] In some optional embodiments, the pore size of the connecting hole gradually increases as it moves away from the liquid inlet.

[0012] In some optional embodiments, end baffles are respectively connected to both ends of the transverse partition, and the two end baffles are respectively connected to the vertical partition and the inner wall of the evaporator cylinder. The transverse partition, the two end baffles, each vertical partition and the inner wall of the evaporator cylinder form each suction cavity.

[0013] In some optional embodiments, liquid equalizing end plates are respectively connected between the two ends of the liquid equalizing plate and the inner wall of the evaporator cylinder, and the liquid equalizing plate, the two liquid equalizing end plates and the inner wall of the evaporator cylinder form a liquid equalizing cavity connected to the liquid inlet.

[0014] In some optional embodiments, each compressor suction pipe is arranged vertically or along the radial direction of the evaporator cylinder.

[0015] In some optional embodiments, the compressor suction pipes are arranged at intervals along the axial direction of the evaporator cylinder.

[0016] The beneficial effects of the present application are as follows: the evaporator provided by the present application comprises an evaporator cylinder, a transverse partition connected to the evaporator cylinder, and at least one vertical partition, the vertical partitions are respectively connected to the top surface of the transverse partition and the inner wall of the evaporator cylinder, the transverse partition divides the interior of the evaporator cylinder into an air outlet cavity and an evaporation cavity arranged up and down, the vertical partition divides the air outlet cavity into at least two air intake cavities arranged in sequence along the width direction of the evaporator cylinder, the top of the evaporator cylinder is provided with a compressor air intake pipe respectively connected to each air intake cavity, the bottom center of the evaporator cylinder is provided with a liquid inlet connected to the evaporation cavity, a plurality of connecting holes connecting the evaporation cavity and the air intake cavity are provided on the transverse partition, and the connecting holes and the compressor air intake pipe are staggered in the horizontal direction. The evaporator provided by the present application forms an air intake cavity connected to each compressor air intake pipe by using transverse partitions and vertical partitions to enclose, so that multiple compressors can operate simultaneously to absorb gaseous refrigerant, which can not only improve the refrigeration capacity of the entire compressor, but also improve the operating adjustment range of air intake compression and refrigeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A partial perspective structural schematic diagram of the evaporator provided in Example 1 of the present application from a first viewing angle;

[0019] Figure 2 A partial perspective structural schematic diagram of the evaporator provided in Example 1 of the present application from a second viewing angle;

[0020] Figure 3 For along Figure 1 Section view of the AA section line;

[0021] Figure 4 A schematic diagram of a partial perspective structure of an evaporator provided by another embodiment of the present application from a first viewing angle;

[0022] Figure 5 A schematic diagram of a partial perspective structure of an evaporator provided by another embodiment of the present application from a first viewing angle;

[0023] Figure 6 For along Figure 4 Sectional view of the middle BB section line;

[0024] Figure 7 A schematic diagram of a partial perspective structure of an evaporator provided in Example 2 of the present application from a first viewing angle;

[0025] Figure 8 A partial perspective structural schematic diagram of the evaporator provided in Example 2 of the present application from a second viewing angle;

[0026] Fig. 9 A schematic structural diagram of the first perspective of the connection between the horizontal partition and the vertical partition in the evaporator provided in Example 3 of the present application;

[0027] Fig.10 This is a structural schematic diagram from a second perspective of the connection between the horizontal partition and the vertical partition in the evaporator provided in Example 3 of the present application.

[0028] In the figure: 100, evaporator cylinder; 110, horizontal partition; 120, vertical partition; 130, air outlet cavity; 140, evaporation cavity; 150, air intake cavity; 160, compressor suction pipe; 170, liquid inlet; 180, connecting hole; 190, wire mesh demister; 200, liquid equalizing plate; 210, liquid equalizing hole; 220, flow hole; 230, end baffle; 240, liquid equalizing end plate; 250, liquid equalizing cavity; 280, tube sheet; 290, head; 300, water inlet pipe; 310, water outlet pipe; 320, support plate; 330, evaporation tube. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The features and performance of the evaporator of the present application are further described in detail below in conjunction with the embodiments.

[0037] Example 1

[0038] like Figure 1 , Figure 2 and Figure 3As shown, the embodiment of the present application provides an evaporator, which includes an evaporator cylinder 100, wherein a transverse partition 110 and a vertical partition 120 whose bottom is connected to the top surface of the transverse partition 110 are arranged in the evaporator cylinder 100, the two sides of the transverse partition 110 are respectively connected to the inner wall of the evaporator cylinder 100, the two ends of the transverse partition 110 are respectively connected to the inner wall of the evaporator cylinder 100 through the end baffles 230, the two ends and the top of the vertical partition 120 are respectively connected to the two end baffles 230 and the inner wall of the evaporator cylinder 100, the transverse partition 110 and the two end baffles 230 divide the interior of the evaporator cylinder 100 into an air outlet cavity 130 and an evaporation cavity 140 arranged up and down, and the vertical partition 120 divides the air outlet cavity 130 into two evaporation cavities along the width of the evaporator cylinder 100. There are two suction chambers 150 arranged in sequence in the direction, and two compressor suction pipes 160 are provided on the top of the evaporator cylinder 100, which are respectively connected to the suction chambers 150. The two compressor suction pipes 160 are symmetrically arranged and extend along the radial direction of the evaporator cylinder 100. The angles α and β between the central axes of the two compressor suction pipes 160 and the vertical plane are both 30 degrees. A liquid inlet 170 connected to the evaporation chamber 140 is provided at the bottom center of the evaporator cylinder 100, and connecting holes 180 arranged at intervals and connecting the evaporation chamber 140 and the suction chamber 150 are opened on the transverse partition 110. The connecting holes 180 and the compressor suction pipes 160 are staggered in the horizontal direction, and the aperture of the connecting holes 180 gradually increases as they are away from the liquid inlet 170. A wire mesh demister 190 is provided at the top of the evaporation chamber 140, and an inverted V-shaped liquid balancing plate 200 is provided at the bottom of the evaporation chamber 140. Liquid balancing holes 210 arranged at intervals are opened on the liquid balancing plate 200. The liquid balancing holes 210 and the liquid inlet 170 are staggered in the horizontal direction. Liquid balancing end plates 240 are connected to the inner wall of the evaporator cylinder 100, and the liquid balancing plate 200, the two liquid balancing end plates 240 and the evaporator are connected to each other. The inner walls of the cylinder 100 enclose a liquid distribution cavity 250 connected to the liquid inlet 170; both ends of the evaporator cylinder 100 are connected to the heads 290 through the tube sheets 280, and one head 290 is connected to the water inlet pipe 300 and the water outlet pipe 310. Five support plates 320 and evaporation tubes 330 arranged at intervals are provided in the evaporation cavity 140. After the evaporation tubes 330 pass through each support plate 320, both ends of the evaporation tubes 330 pass through the two tube sheets 280 to connect to the two heads 290.

[0039] The evaporator provided in the embodiment of the present application divides the interior of the evaporator cylinder 100 into an air outlet chamber 130 and an evaporation chamber 140 arranged vertically by arranging a transverse partition 110 and two end baffles 230 in the evaporator cylinder 100, and arranging a vertical partition 120 on the top surface of the transverse partition 110 to divide the air outlet chamber 130 into two air intake chambers 150, so that the refrigerant entering the evaporation chamber 140 through the central liquid inlet 170 at the bottom of the evaporator cylinder 100 contacts the evaporation tube 330 for evaporation, and the evaporated refrigerant enters the two air intake chambers 150 respectively through the connecting holes 180 on the transverse partition 110, and then the evaporated refrigerant is sucked into the compressor through the two compressor intake pipes 160 connected to the intake chambers 150, so that the evaporator supplies two compressors for operation while reducing the length of the evaporator cylinder 100, which can not only improve the refrigeration capacity of the compressor, but also improve the operating adjustment range of the intake compression and refrigeration.

[0040] The liquid inlet 170 is arranged on the center line of the bottom center of the evaporator cylinder 100, which can ensure that the refrigerant entering the liquid inlet 170 impacts the liquid equalizing plate 200 and then disperses to both ends and enters the evaporation chamber 140 more evenly.

[0041] The connecting hole 180 and the compressor suction pipe 160 are staggered in the horizontal direction, which can prevent the evaporated refrigerant from directly entering the compressor suction pipe 160, thereby avoiding the entrainment of droplets. At the same time, the aperture of the connecting hole 180 gradually increases as it moves away from the liquid inlet 170, which can reduce the air intake in the middle of the suction chamber 150 with high pressure and increase the air intake at both ends of the suction chamber 150 with low pressure, thereby ensuring the balance of the air intake in the suction chamber 150.

[0042] A wire mesh demister 190 is provided on the top of the evaporation chamber 140, which can filter the evaporated refrigerant to remove the misty refrigerant to form pure gaseous refrigerant to enter the suction chamber 150, avoiding the situation of gas-liquid entrainment caused by intense boiling of liquid refrigerant during heat exchange, resulting in liquid in the suction.

[0043] An inverted V-shaped liquid equalizing plate 200 is provided at the bottom of the evaporation chamber 140, and liquid equalizing holes 210 are arranged at intervals on the liquid equalizing plate 200. The liquid equalizing holes 210 and the liquid inlet 170 are staggered in the horizontal direction. The two ends of the liquid equalizing plate 200 are respectively connected to liquid equalizing end plates 240, and the liquid equalizing end plates 240 are connected to the inner wall of the evaporator cylinder 100. The liquid equalizing plate 200, the two liquid equalizing end plates 240 and the inner wall of the evaporator cylinder 100 form a liquid equalizing chamber 250 connected to the liquid inlet 170, which can make the incoming refrigerant impact the liquid equalizing plate 200 and then disperse to both ends and evenly enter the evaporation chamber 140 through the liquid equalizing holes 210, thereby ensuring that the refrigerant is evenly released from the evaporation tube 330 in the evaporation chamber 140 to evaporate.

[0044] In other optional embodiments, the angles α and β between the central axes of the two compressor intake pipes 160 and the vertical plane may be the same or different.

[0045] In other optional embodiments, the number of vertical partitions 120 can also be two or more, and the air outlet cavity 130 is divided into three or more air intake cavities 150 arranged sequentially along the width direction of the evaporator cylinder 100 by the vertical partitions 120, and three or more compressor air intake pipes 160 are provided to be connected to each of the air intake cavities 150, so that one evaporator is used to supply three or more compressor air intake operations. At this time, the diameter and length dimensions of the evaporator cylinder 100 can be adjusted as needed to meet the process requirements.

[0046] In other optional embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, the two compressor suction pipes 160 may also be arranged vertically, and the distance between the central axis of the two compressor suction pipes 160 and the central axis of the evaporator cylinder 100 is the same.

[0047] In other optional embodiments, the two compressor suction pipes 160 may also be arranged vertically, and the distances between the central axes of the two compressor suction pipes 160 and the central axis of the evaporator cylinder 100 are different.

[0048] Example 2

[0049] like Figure 7 and Figure 8 As shown, an embodiment of the present application provides an evaporator, which has a structure roughly the same as the evaporator provided in Example 1, with the difference that, in this embodiment, two compressor suction pipes 160 are arranged at intervals along the axial direction of the evaporator cylinder 100, that is, the two compressor suction pipes 160 are respectively connected to both sides of the top ends of the evaporator cylinder 100.

[0050] The evaporator provided in the embodiment of the present application is able to balance the suction pressure of the two compressor suction pipes 160 by arranging two compressor suction pipes 160 at the two ends of the top of the evaporator cylinder 100 and respectively connecting them with the two suction cavities 150 on both sides of the evaporator cylinder 100, and can adapt to the evaporator layout position requirements by arranging the compressor suction pipes 160 at both ends.

[0051] Example 3

[0052] like Fig. 9 and Fig.10As shown, an embodiment of the present application provides an evaporator, which has a structure substantially the same as that of the evaporator provided in Example 1, except that flow holes 220 arranged at intervals and connecting the two suction chambers 150 are provided on the vertical partition 120, and the flow holes 220 and the compressor suction pipe 160 are staggered in the horizontal direction, and the aperture of the flow holes 220 gradually increases as it moves away from the liquid inlet 170.

[0053] The evaporator provided in the embodiment of the present application can improve the circulation of gaseous refrigerant between the two suction chambers 150 by opening a flow hole 220 connecting the two suction chambers 150 on the vertical partition 120, ensure the air pressure balance of the two suction chambers 150, improve the suction unevenness of the two compressor suction pipes 160, ensure that the two compressor suction pipes 160 uniformly output gaseous refrigerant to the compressor, and improve the stability and reliability of the compressor operation. The flow hole 220 and the compressor suction pipe 160 are staggered in the horizontal direction, which can avoid the gaseous refrigerant from being directly discharged after passing through the flow hole 220 to produce liquid. The aperture of the flow hole 220 gradually increases as it moves away from the liquid inlet 170, which can reduce the flow of gaseous refrigerant in the middle of the suction chamber 150 with high pressure, and increase the flow of gaseous refrigerant at both ends of the suction chamber 150 with low pressure, thereby ensuring the balance of the flow of gaseous refrigerant in the two suction chambers 150.

[0054] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. An evaporator, characterized in that: The air intake pipe is an air intake pipe having a plurality of holes connected to the air intake cavities, the holes being selected from the group consisting of the top and bottom of the air intake cavities, the top of the air intake cavities being connected to the air intake cavities, the bottom of the air intake cavities being connected to the air intake cavities, and the bottom of the air intake cavities being connected to the air intake cavities.

2. The evaporator according to claim 1, characterized in that A wire mesh demister is arranged on the top of the evaporation chamber.

3. The evaporator according to claim 1, characterized in that An inverted V-shaped liquid balancing plate is provided at the bottom of the evaporation chamber. A plurality of liquid balancing holes are provided on the liquid balancing plate. The liquid balancing holes and the liquid inlet are staggered in the horizontal direction.

4. The evaporator according to claim 1, characterized in that The vertical partition plate is provided with a plurality of flow holes communicating with two adjacent suction cavities, and the flow holes and the compressor suction pipe are staggered in the horizontal direction.

5. The evaporator according to claim 4, characterized in that The aperture of the flow hole gradually increases as it moves away from the liquid inlet.

6. The evaporator according to claim 1, characterized in that The diameter of the connecting hole gradually increases as it moves away from the liquid inlet.

7. The evaporator according to claim 1, characterized in that The two ends of the transverse partition are respectively connected with end baffles, and the two end baffles are respectively connected to the vertical partition and the inner wall of the evaporator cylinder. The transverse partition, the two end baffles, each of the vertical partitions and the inner wall of the evaporator cylinder form each of the air suction cavities.

8. The evaporator according to claim 3, characterized in that Liquid equalizing end plates are respectively connected between the two ends of the liquid equalizing plate and the inner wall of the evaporator cylinder. The liquid equalizing plate, the two liquid equalizing end plates and the inner wall of the evaporator cylinder form a liquid equalizing cavity connected to the liquid inlet.

9. The evaporator according to claim 1, characterized in that Each of the compressor suction pipes is arranged vertically or along the radial direction of the evaporator cylinder.

10. The evaporator according to claim 1, characterized in that The compressor suction pipes are arranged at intervals along the axial direction of the evaporator cylinder.

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