Blow-up evaporator

Abstract

The utility model discloses a roll-bond evaporator which comprises an evaporation plate and a refrigeration pipeline which is arranged on the evaporation plate and formed in a roll-bond mode, the refrigeration pipeline comprises a capillary tube, an evaporation area and a liquid return area, the evaporation area is arranged on the left side of the evaporation plate and comprises a plurality of U-shaped evaporation pipes, the U-shaped evaporation pipes are communicated in sequence, and the liquid return area is communicated with the capillary tube. One end of the evaporation pipe is connected with one end of the capillary, and one end of the evaporation pipe far away from the capillary is connected with the liquid return area. According to the roll-bond evaporator, the evaporation area is provided with the multiple U-shaped circulating evaporation pipes communicating in sequence, the flowing distance of refrigerants in the evaporation area is increased, and therefore the evaporation time of the refrigerants in the roll-bond evaporator is prolonged, the heat exchange rate of the evaporation area and air is high, and the refrigeration effect is good; and the U-shaped circulating evaporation pipe can reasonably control the flow speed of the refrigerant in the evaporation area, so that the flow noise of the refrigerant is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to an inflation evaporator. Background Art

[0002] Inflation evaporators are constructed from double-layer aluminum plates. Typically, aluminum plates of a specified specification are surface-treated, with the evaporation pipe pattern printed on the mating surfaces. The composite panels are welded according to the pattern, then heat-treated, such as by hot rolling, before being inflated with nitrogen. Inflation evaporators are widely used in beverage cabinets and export refrigerators.

[0003] The currently used inflation-type evaporators generally have problems such as loud noise, poor cooling effect, and low heat absorption area utilization, which bring discomfort to users' lives. Utility Model Content

[0004] The purpose of this utility model is to provide an inflation evaporator to overcome the above-mentioned defects.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A blowing evaporator includes an evaporator plate and a refrigeration pipeline formed by inflation and arranged on the evaporator plate. The refrigeration pipeline includes a capillary tube, an evaporation area and a liquid return area. The evaporation area is arranged on the left side of the evaporator plate and includes a plurality of U-shaped evaporation tubes. The plurality of U-shaped evaporation tubes are connected in sequence. One end of the evaporation tube is connected to one end of the capillary tube, and the end of the evaporation tube away from the capillary tube is connected to the liquid return area.

[0007] As a further solution of the present invention: the liquid return area is arranged on the right side of the evaporation plate, and the liquid return area includes a plurality of liquid return pipes arranged at intervals from top to bottom, adjacent liquid return pipes are connected by connecting parts, the uppermost liquid return pipe is connected to the end of the evaporation tube away from the capillary tube, and the lowermost liquid return pipe is connected to the liquid return port through a bent pipe.

[0008] As a further solution of the present invention: the liquid return pipe is a rectangular parallelepiped with smooth edges, and the width of the liquid return pipe is respectively larger than the diameters of the evaporation pipe and the bending pipe.

[0009] As a further solution of the present invention: a plurality of fixing parts are provided on the liquid return pipe, and the fixing parts are formed by squeezing and fitting the opposite surface parts of the refrigeration pipeline.

[0010] As a further solution of the present invention: the bent tube is an L-shaped bent tube.

[0011] As a further solution of the present invention: a transition portion is provided at the tube mouth end connecting the evaporating tube and the capillary tube, and the transition portion is in a frustum shape, wherein the narrow end of the transition portion is connected to the capillary tube.

[0012] Beneficial effects of the utility model:

[0013] (1) In this application, the evaporation zone is designed with multiple U-shaped circulation evaporation tubes connected in sequence, which increases the flow distance of the refrigerant in the evaporation zone, thereby increasing the evaporation time of the refrigerant in the expansion evaporator, making the heat exchange rate between the evaporation zone and the air high and the refrigeration effect good. In addition, the U-shaped circulation evaporation tube can reasonably control the flow rate of the refrigerant in the evaporation zone and reduce the flow noise of the refrigerant;

[0014] (2) The present application designs a liquid return zone with multiple liquid return pipes spaced apart in an upper and lower manner, which can control the flow rate of the refrigerant in the liquid return zone so that the refrigerant flows back from top to bottom, thereby avoiding the noise of liquid refrigerant dripping caused by the refrigerant backflow;

[0015] (3) The refrigeration pipeline is formed by blowing on the evaporation plate. The refrigeration pipeline includes a capillary tube, an evaporation area and a liquid return area, so that the refrigeration pipeline on the evaporation plate can be processed and formed according to the pattern design, which is easy to operate;

[0016] (4) By setting a transition portion at the end of the tube connecting the evaporating tube and the capillary tube, the refrigerant ejected from the capillary tube first passes through the transition portion for pressure release, which can fully suppress the expansion of the refrigerant, reduce the flow rate of the refrigerant in the U-shaped cycle evaporating tube, and fully reduce the injection noise in the initial stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] In the figure: 1. Evaporation plate; 2. Capillary tube; 3. Evaporation tube; 4. Liquid return pipe; 5. Bend tube; 6. Liquid return port; 7. Transition part; 8. Connecting part; 9. Fixed part. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, "multiple" and "several" mean at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0022] See also Figure 1 As shown, the utility model is an inflation evaporator, comprising an evaporation plate 1 and a refrigeration pipeline formed by inflation on the evaporation plate 1, the refrigeration pipeline comprising a capillary tube 2, an evaporation zone and a liquid return zone, the evaporation zone being arranged on the left side of the evaporation plate 1, and the evaporation zone comprising a plurality of U-shaped evaporation tubes 3, the plurality of U-shaped evaporation tubes 3 being sequentially connected, one end of the evaporation tube 3 being connected to one end of the capillary tube 2, and the end of the evaporation tube 3 away from the capillary tube 2 being connected to the liquid return zone.

[0023] During the use of the blown evaporator of the present application, when the refrigeration system is operating normally, the low-temperature and low-pressure refrigerant is discharged from the compressor of the refrigeration system, condensed into liquid through the condenser, and then enters the capillary tube 2 of the blown evaporator. The capillary tube 2 throttles and reduces the pressure of the refrigerant so that it becomes low-temperature and low-pressure wet steam when it enters the evaporation zone. In the evaporation zone, the refrigerant exchanges heat with the external environment (such as the air in the refrigerator or freezer) through multiple U-shaped evaporation tubes 3. In the process of evaporation of the refrigerant from liquid to gas, a large amount of heat is absorbed, which causes the temperature of the cooled material (such as food, beverages, etc.) to drop, thereby achieving the purpose of freezing or refrigeration; the evaporated refrigerant gas (mixed with some unevaporated liquid refrigerant) enters the liquid return zone. In the liquid return zone, the refrigerant is collected through the pipeline and returned to the compressor to complete the refrigeration cycle.

[0024] In the present application, the evaporation zone is designed with multiple U-shaped circulation evaporation tubes 3 connected in sequence, which increases the flow distance of the refrigerant in the evaporation zone, thereby increasing the evaporation time of the refrigerant in the inflation evaporator, making the heat exchange rate between the evaporation zone and the air high and the refrigeration effect good; and the U-shaped circulation evaporation tube 3 can reasonably control the flow rate of the refrigerant in the evaporation zone, reducing the flow noise of the refrigerant.

[0025] In this specific embodiment, the liquid return area is arranged on the right side of the evaporation plate 1, and the liquid return area includes a plurality of liquid return pipes 4 arranged at intervals from top to bottom, and adjacent liquid return pipes 4 are connected by a connecting portion 8. The uppermost liquid return pipe 4 is connected to the end of the evaporation tube 3 away from the capillary tube 2, and the lowermost liquid return pipe 4 is connected to the liquid return port 6 through a bent pipe 5; the present application designs the liquid return area with a plurality of liquid return pipes 4 arranged at intervals up and down, which can control the flow rate of the refrigerant in the liquid return area so that the refrigerant flows back from top to bottom, avoiding the noise of liquid refrigerant dripping during the refrigerant reflux.

[0026] In this specific embodiment, the return liquid pipe 4 is a rectangular parallelepiped with smooth edges, and the width of the return liquid pipe 4 is respectively greater than the diameter of the evaporation tube 3 and the bending tube 5. The rectangular parallelepiped and wider return liquid pipe 4 is designed to make the gas-liquid mixed refrigerant have good fluidity during the liquid return process of the refrigerant that has not been completely evaporated, thereby avoiding the noise caused by multiple changes in flow direction, and at the same time avoiding the noise of liquid refrigerant dripping when the refrigerant returns.

[0027] In this specific embodiment, a plurality of fixing parts 9 are provided on the liquid return pipe 4. The fixing parts 9 are formed by extruding and bonding the opposite surface parts of the refrigeration pipeline to ensure stable welding of the evaporation plate 1.

[0028] In this specific embodiment, the bent tube 5 is an L-shaped bent tube, which can prevent the refrigerant from flowing back to the liquid return pipe 4.

[0029] In this specific embodiment, a transition portion 7 is provided at the tube end connecting the evaporating tube 3 and the capillary tube 2. The transition portion 7 is in the shape of a cone, wherein the narrow end of the transition portion 7 is connected to the capillary tube 2. The refrigerant ejected from the capillary tube 2 first passes through the transition portion 7 for pressure release, which can fully suppress the expansion of the refrigerant, reduce the flow rate of the refrigerant in the U-shaped circulation evaporating tube 3, and fully reduce the injection noise in the initial stage.

[0030] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. An inflation evaporator, comprising an evaporation plate (1) and a refrigeration pipeline formed by inflation on the evaporation plate (1), wherein the refrigeration pipeline comprises a capillary tube (2), an evaporation zone and a liquid return zone, and is characterized in that: The evaporation zone is arranged on the left side of the evaporation plate (1), and the evaporation zone includes a plurality of U-shaped evaporation tubes (3), the plurality of U-shaped evaporation tubes (3) are sequentially connected, one end of the evaporation tube (3) is connected to one end of the capillary tube (2), and the end of the evaporation tube (3) away from the capillary tube (2) is connected to the liquid return zone.

2. The inflation evaporator according to claim 1, characterized in that: The liquid return area is arranged on the right side of the evaporation plate (1), and the liquid return area includes a plurality of liquid return pipes (4) arranged at intervals from top to bottom, adjacent liquid return pipes (4) are connected via a connecting portion (8), the liquid return pipe (4) on the top layer is connected to an end of the evaporation tube (3) away from the capillary tube (2), and the liquid return pipe (4) on the bottom layer is connected to a liquid return port (6) via a bent pipe (5).

3. The inflation evaporator according to claim 2, characterized in that: The liquid return pipe (4) is a rectangular parallelepiped with smooth edges, and the width of the liquid return pipe (4) is respectively greater than the diameters of the evaporation pipe (3) and the bending pipe (5).

4. The inflation evaporator according to claim 3, characterized in that: The liquid return pipe (4) is provided with a plurality of fixing portions (9), and the fixing portions (9) are formed by extruding and bonding the opposite surface portions of the refrigeration pipeline.

5. The inflation evaporator according to claim 3, characterized in that: The bending tube (5) is an L-shaped bending tube.

6. The inflation evaporator according to claim 1, characterized in that: A transition portion (7) is provided at the tube mouth end connecting the evaporation tube (3) and the capillary tube (2). The transition portion (7) is in the shape of a frustum, wherein the narrow end of the transition portion (7) is connected to the capillary tube (2).

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