Flat plate evaporator and refrigeration equipment

Abstract

The utility model discloses a flat plate evaporator and refrigeration equipment, the flat plate evaporator comprises a flat plate-shaped evaporator shell and a refrigerant shell, the refrigerant shell is installed on the evaporator shell in a sealing mode, and at least one refrigerant channel is defined between the refrigerant shell and the evaporator shell; the refrigerant channel is arranged on the heat conduction face of the evaporator shell in a winding mode, condensed liquid in the refrigerant channel acts on the heat conduction face, and the two ends of the refrigerant channel are connected with a condenser and a compressor through pipelines respectively. The heat conduction efficiency and the cold conduction performance of the evaporator can be improved, the overall structure is simple, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a flat plate evaporator and refrigeration equipment. Background Art

[0002] The evaporator is an important component in refrigeration equipment, which is used to achieve heat exchange. For example, low-temperature condensed liquid exchanges heat with the outside air through the evaporator, vaporizes and absorbs heat, and achieves a cooling effect. At present, the evaporator of some refrigeration equipment generally includes an evaporator body and a coil. The evaporator body includes an inner and outer shell. The coil is arranged on the inner shell and contacts the inner wall of the outer shell. When condensed liquid is passed into the coil, the condensed liquid exchanges heat with the outside through the coil tube wall and the outer shell wall to achieve a cooling effect. However, the heat of the above structure needs to be conducted through the coil tube wall and the outer shell wall. Due to the large amount of heat conduction medium, the heat conduction efficiency is affected, resulting in a low cooling effect. In addition, the overall structure is relatively complex and the cost is high. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a flat plate evaporator and refrigeration equipment, which can improve the heat conduction efficiency and the cooling performance of the evaporator, and have a simple overall structure and low production cost.

[0004] In order to solve the above technical problems, the utility model provides a flat-plate evaporator, comprising a flat-plate evaporator shell and a refrigerant shell, the refrigerant shell being sealed and mounted on the evaporator shell, at least one refrigerant channel being enclosed between the refrigerant shell and the evaporator shell; the refrigerant channel being coiled and arranged on the heat-conducting surface of the evaporator shell, the condensed liquid in the refrigerant channel acting on the heat-conducting surface, and the two ends of the refrigerant channel being connected to the condenser and the compressor respectively through pipes.

[0005] As an improvement of the above solution, the refrigerant shell is provided with at least one coiled groove, the notch of the groove faces the heat-conducting surface, and the groove and the heat-conducting surface are enclosed to form the refrigerant channel; the groove is in a planar spiral shape or a planar Z-shaped folded shape.

[0006] As an improvement to the above solution, at least one pair of grooves is provided on the refrigerant shell, each pair of grooves is arranged on the same plane and is symmetrical around the same central axis, and each pair of grooves is respectively enclosed with the heat-conducting surface to form the corresponding refrigerant channel.

[0007] As an improvement of the above solution, an input part and an output part are respectively provided at both ends of the groove, and the input part and the output part are respectively connected to the refrigerant channel; one end of the refrigerant channel is connected to the condenser via the input part and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output part and the refrigerant output pipe in sequence.

[0008] As an improvement of the above solution, the refrigerant shell is provided with a groove that bends back and forth along the length direction or width direction of the heat-conducting surface. The groove is folded in a Z shape, and the notch of the groove faces the heat-conducting surface. The groove and the heat-conducting surface enclose the refrigerant channel.

[0009] As an improvement of the above solution, the groove includes multiple straight pipe sections and multiple curved pipe sections, two adjacent straight pipe sections are arranged in parallel, and each curved pipe section is respectively connected to the same end of two adjacent straight pipe sections.

[0010] As an improvement of the above solution, an input part and an output part are respectively provided at the head and tail ends of the groove, and the input part and the output part are respectively connected to the refrigerant channel; one end of the refrigerant channel is connected to the condenser via the input part and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output part and the refrigerant output pipe in sequence.

[0011] As an improvement of the above-mentioned solution, an input part and an output part are provided on the groove, either of the input part and the output part is provided in the middle section of the groove and the other is provided at the head end and the end end of the groove respectively, the input part and the output part are respectively communicated with the refrigerant channel, and the input part and the output part are respectively provided at the opposite ends of the refrigerant shell; one end of the refrigerant channel is connected to the condenser via the input part and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output part and the refrigerant output pipe in sequence.

[0012] As an improvement to the above solution, the head and tail ends of the groove are connected to each other, one end of the groove is provided with an input part, and the other end of the groove is provided with an output part, and the input part and the output part are respectively connected to the refrigerant channel; one end of the refrigerant channel is connected to the condenser via the input part and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output part and the refrigerant output pipe in sequence.

[0013] As an improvement of the above-mentioned solution, an input groove connected to the refrigerant channel is provided in the input part, an input pipe opening extending outward is provided on the input part, the input pipe opening is connected to the input groove, and the refrigerant input pipe is inserted into the input pipe opening; an output groove connected to the refrigerant channel is provided in the output part, an output pipe opening extending outward is provided on the output part, the output pipe opening is connected to the output groove, and the refrigerant output pipe is inserted into the output pipe opening.

[0014] As an improvement of the above solution, the groove is provided with a plurality of middle input pipe openings at intervals along the flow direction of the refrigerant channel, and the middle input pipe opening is connected to the refrigerant channel; the middle input pipe opening is located between the input pipe opening and the output pipe opening, and the middle input pipe opening is connected to the condenser through a corresponding refrigerant input pipe.

[0015] As an improvement to the above solution, the cross section of the groove is semicircular, triangular, square or rectangular.

[0016] As an improvement to the above solution, the evaporator shell is made of a heat-conducting material, and the refrigerant shell is made of plastic, silicone or metal.

[0017] As an improvement of the above solution, the evaporator shell has at least a partially straight plate portion, and the evaporator shell is square, circular or elliptical.

[0018] The utility model also provides a refrigeration device, comprising a machine body, wherein the evaporator is arranged in the machine body, and the refrigeration device is an ice cream machine, a smoothie machine, a cold drink machine, or an ice maker.

[0019] The beneficial effects of implementing the present invention are:

[0020] The utility model forms a refrigerant channel between a flat refrigerant housing and an evaporator housing. The refrigerant channel is coiled around the heat-conducting surface of the evaporator housing. Condensed liquid in the refrigerant channel acts on the heat-conducting surface, directly exchanging heat outward through the shell wall of the heat-conducting surface. By reducing the heat transfer medium, the evaporator's heat transfer efficiency can be effectively improved, thereby greatly enhancing the evaporator's cooling performance. Furthermore, the overall structure is simple, saving assembly space and reducing production costs. Condensed liquid can also be guided through the refrigerant channel to increase its flow rate and heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the first embodiment of the flat plate evaporator of the utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of the flat plate evaporator of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the refrigerant shell of the utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the flat plate evaporator of the present invention;

[0025] Figure 5 This is a structural diagram of a second embodiment of the flat plate evaporator of the present utility model;

[0026] Figure 6 It is a structural schematic diagram of the third embodiment of the flat plate evaporator of the present utility model;

[0027] Figure 7 This is a schematic structural diagram of a fourth embodiment of the flat plate evaporator of the present utility model;

[0028] Figure 8 This is a schematic structural diagram of a fifth embodiment of the flat plate evaporator of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the sixth embodiment of the flat plate evaporator of the present utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 4 As shown, Figures 1 to 4 A schematic diagram of the structure of the first embodiment of the flat-plate evaporator of the present invention is shown. The flat-plate evaporator comprises a flat evaporator housing 1 and a refrigerant housing 2. The refrigerant housing 2 is sealedly mounted on the evaporator housing 1, and together they form a flat, pancake-shaped flat-plate evaporator, reducing overall space usage. A refrigerant channel 3 is formed between the refrigerant housing 2 and the evaporator housing 1. The refrigerant channel 3 is coiled around the heat-conducting surface 11 of the evaporator housing 1. Condensed liquid in the refrigerant channel 3 acts on the heat-conducting surface 11, exchanging heat with the outside through the heat-conducting surface 11. The ends of the refrigerant channel 3 are connected to the condenser and compressor, respectively, via pipes.

[0032] During operation, the condenser transports the condensed liquid to the refrigerant channel 3 through a pipeline. The condensed liquid flowing into the refrigerant channel 3 acts on the heat-conducting surface 11 on one side of the evaporator shell 1. The condensed liquid absorbs heat from the shell wall of the heat-conducting surface 11 and can achieve heat exchange with the outside air. The gas after the condensed liquid is vaporized will be discharged back to the compressor through the refrigerant output pipe 5. Among them, the condensed liquid can be guided by the refrigerant channel 3 so that the condensed liquid forms a consistent flow trend, reducing the eddy currents and resistance that may be generated due to inconsistent directions, thereby improving the flow rate and heat exchange efficiency of the condensed liquid. At the same time, the condensed liquid only needs to pass through the shell wall of the heat-conducting surface 11 (i.e., a single layer of heat-conducting medium) to achieve heat exchange with the outside world. By reducing the heat-conducting medium, the heat conduction efficiency can be effectively improved, thereby improving the cooling performance of the evaporator, and can simplify the overall structure, save assembly space, and reduce production costs.

[0033] Specifically, if Figures 2 to 4 As shown, the refrigerant housing 2 is provided with at least one winding groove 21, the notch of the groove 21 facing the heat-conducting surface 11. The groove 21 and the heat-conducting surface 11 enclose the refrigerant channel 3. The condensed liquid in the refrigerant channel 3 can contact the heat-conducting surface 11 of the evaporator housing 1 through the notch, and exchange heat with the outside world through the shell wall of the heat-conducting surface 11, thereby achieving the evaporator cooling effect. The groove 21 is in a planar spiral shape, but is not limited to this. It can also be in a planar Z-shaped folded shape or other regular or irregular shapes.

[0034] Secondly, the cross-section of the groove 21 is semicircular. This semicircular contact diameter (i.e., the notch diameter) maximizes the contact width between the condensed liquid and the evaporator housing 1, thereby increasing the heat exchange contact area, thereby improving the heat transfer efficiency of the condensed liquid and, in turn, the cooling efficiency of the evaporator. Preferably, the cross-section of the groove 21 can also be triangular, square, or rectangular, etc., without further restriction. The cross-sectional shape only needs to maximize the contact diameter (i.e., the notch diameter).

[0035] Further, if Figures 2 to 4As shown, the two ends of the groove 21 are respectively provided with an input portion 22 and an output portion 23, and the input portion 22 and the output portion 23 are respectively connected to the refrigerant channel 3; one end of the refrigerant channel 3 is connected to the condenser through the input portion 22 and the refrigerant input pipe 4 in sequence, so that the condenser flows the condensed liquid into the refrigerant channel 3 through the refrigerant input pipe 4 and the input portion 22, so that the condensed liquid gradually vaporizes in the refrigerant channel 3 to achieve heat exchange. The other end of the refrigerant channel 3 is connected to the compressor through the output portion 23 and the refrigerant output pipe 5 in sequence. When the condensed liquid in the refrigerant channel 3 vaporizes, the gas generated by its vaporization is discharged back to the compressor through the output portion 23 and the refrigerant output pipe 5, realizing the cold conduction cycle and improving the cooling effect of the evaporator.

[0036] The input portion 22 is provided with an input groove 221 that communicates with the refrigerant channel 3. The input portion 22 is provided with an outwardly extending input nozzle 222 that communicates with the input groove 221. One end of the refrigerant input pipe 4 is inserted into the input nozzle 222 and welded to improve the connection stability and sealing. The output portion 23 is provided with an output groove 231 that communicates with the refrigerant channel 3. The output portion 23 is provided with an outwardly extending output nozzle 232 that communicates with the output groove 231. One end of the refrigerant output pipe 5 is inserted into the output nozzle 232 and welded to improve the connection stability and sealing. When working, the condensed liquid transported by the condenser flows into the refrigerant channel 3 through the refrigerant input pipe 4, the input pipe port 222 and the input groove 221 in turn, so that the condensed liquid is gradually vaporized in the refrigerant channel 3 to realize heat exchange; after the condensed liquid in the refrigerant channel 3 is vaporized, the gas generated by its vaporization is discharged back to the compressor through the output groove 231, the output pipe port 232 and the refrigerant output pipe 5 in turn, realizing the cold conduction cycle and improving the refrigeration effect of the evaporator.

[0037] Preferably, the evaporator housing 1 is made of a heat-conducting material. In this embodiment, the evaporator housing 1 is preferably made of metal, which has good heat conduction performance and can improve cooling performance. In other embodiments, users can also use other heat-conducting materials with good heat conduction performance.

[0038] Preferably, in this embodiment, the refrigerant housing 2 is made of plastic or silicone to reduce unnecessary heat loss and improve heat transfer at the heat-conducting surface 11, thereby enhancing the cooling effect of the evaporator. In other embodiments, users may also use other materials with poorer thermal conductivity. Furthermore, the refrigerant housing 2 may also be made of metal, as this heat-conducting metal material can cool the space outside the refrigerant housing and objects outside the housing.

[0039] Preferably, the evaporator housing 1 has at least a partially straight plate portion 12. For example, the evaporator body 1 is entirely a straight plate portion 12, or the evaporator body 1 has a straight plate portion 12 with four edges or one edge of the straight plate portion 12 being flanged to form a flange portion 13. This reduces the overall space and volume. The evaporator housing 1 is preferably circular or elliptical, but is not limited thereto.

[0040] like Figure 5 As shown, Figure 5 The schematic diagram of the structure of the second embodiment of the flat plate evaporator of the utility model is shown. Figures 1 to 4 The difference from the first embodiment shown is that the groove 21 is provided with a plurality of intermediate input nozzles 24 spaced along the flow direction of the refrigerant channel 3. The intermediate input nozzles 24 are in communication with the refrigerant channel 3. The intermediate input nozzles 24 are located between the input nozzle 222 and the output nozzle 232 and are connected to the condenser via corresponding refrigerant input pipes 4. When the evaporator is operating, the condensed liquid from the condenser flows synchronously through the input nozzle 222 and the plurality of intermediate input nozzles 24 into different locations of the refrigerant channel 3 and acts on corresponding locations of the heat transfer surface of the evaporator housing 1, allowing the low-temperature condensed liquid to quickly exchange heat at different locations of the evaporator, accelerating the overall condensed liquid circulation and heat exchange rate, thereby improving the cooling efficiency of the evaporator.

[0041] like Figure 6 As shown, Figure 6 The schematic diagram of the structure of the third embodiment of the flat plate evaporator of the utility model is shown. Figures 1 to 4 The difference from the first embodiment shown is that the refrigerant housing 2 is provided with at least one pair of grooves 21. Each pair of grooves 21 is arranged on the same plane and is centrally symmetrical about the same central axis. Each pair of grooves 21 encloses the heat transfer surface to form a corresponding refrigerant channel 3. The two refrigerant channels 3 are in a planar double-helical shape. By providing two independent refrigerant channels 3, the condensed liquid can flow in synchronously and act together on the heat transfer surface of the evaporator housing 1, thereby accelerating heat exchange between the heat transfer surface and the outside world. This can effectively improve the heat exchange efficiency and effect of the condensed liquid, thereby improving the cooling efficiency of the evaporator.

[0042] like Figure 7 As shown, Figure 7 The schematic diagram of the structure of the fourth embodiment of the flat plate evaporator of the utility model is shown. Figures 1 to 4The difference from the first embodiment shown is that the evaporator body 1 is preferably square, but not limited to this; the refrigerant housing 2 is provided with a groove 21 that bends back and forth along the length or width direction of the heat-conducting surface. The groove 21 is folded in a Z-shape, with the notch of the groove 21 facing the heat-conducting surface. The groove 21 and the heat-conducting surface enclose the refrigerant channel. The groove includes a plurality of straight pipe sections 25 and a plurality of curved pipe sections 26. Two adjacent straight pipe sections 25 are arranged in parallel, and each curved pipe section 26 is connected to the same end of two adjacent straight pipe sections, so as to facilitate the diversion of the condensed liquid, increase the contact area between the condensed liquid and the heat-conducting surface, and improve the cooling effect of the evaporator.

[0043] During operation, the condenser transports the condensed liquid to the refrigerant channel 3 through a pipeline. The condensed liquid flowing into the refrigerant channel 3 acts on the heat-conducting surface on one side of the evaporator shell 1. The condensed liquid absorbs heat from the outside through the shell wall of the heat-conducting surface, and can achieve heat exchange with the outside air. The gas after the condensed liquid is vaporized will be discharged back to the compressor through the refrigerant output pipe 5. Among them, the condensed liquid can be guided by the refrigerant channel 3 so that the condensed liquid forms a consistent flow trend, reducing the eddy currents and resistance that may be generated due to inconsistent directions, thereby improving the flow speed and heat exchange efficiency of the condensed liquid. At the same time, the condensed liquid only needs to pass through the shell wall of the heat-conducting surface (that is, a single layer of heat-conducting medium) to achieve heat exchange with the outside world. By reducing the heat-conducting medium, the heat conduction efficiency can be effectively improved, thereby improving the cooling performance of the evaporator, and can simplify the overall structure, save assembly space, and reduce production costs.

[0044] The groove 21 is provided with an input portion 22 and an output portion 23 at both ends, and the input portion 22 and the output portion 23 are respectively connected to the refrigerant channel 3; one end of the refrigerant channel 3 is connected to the condenser via the input portion 22 and the refrigerant input pipe 4, and the other end of the refrigerant channel 3 is connected to the compressor via the output portion 23 and the refrigerant output pipe 5. When in operation, the condensed liquid transported by the condenser flows into the refrigerant channel 3 through the refrigerant input pipe 4, the input pipe opening 222, and the input groove 221, so that the condensed liquid gradually vaporizes in the refrigerant channel 3, achieving heat exchange; after the condensed liquid in the refrigerant channel 3 vaporizes, the gas generated by the vaporization is discharged back to the compressor via the output groove 231, the output pipe opening 232, and the refrigerant output pipe 5, thereby achieving a cooling cycle and improving the cooling effect of the evaporator.

[0045] like Figure 8 As shown, Figure 8 The schematic diagram of the structure of the fifth embodiment of the flat plate evaporator of the utility model is shown. Figure 7The fourth embodiment shown is different in that an input portion 22 and an output portion 23 are provided on the groove 21, either of the input portion 22 and the output portion 23 is provided in the middle section of the groove 21 and the other is provided at the head end and the end end of the groove 21 respectively, and the input portion 22 and the output portion 23 are respectively connected to the refrigerant channel 3 to form a refrigerant channel 3 with the same input and two independent outputs or a refrigerant channel 3 with the same output and two independent inputs.

[0046] Specifically, if Figure 8 As shown, this embodiment forms a refrigerant channel 3 with a single input and two independent outputs. The input portion 22 and the output portion 23 are respectively provided at opposite ends of the refrigerant housing 2, and the two output portions 23 are respectively provided at different heights on the same vertical plane to ensure that two refrigerant channels 3 of equal length are formed, so that the condensed liquid can evenly conduct heat to the heat-conducting surface, thereby improving the cooling uniformity. One end of the two refrigerant channels 3 is connected to the condenser via the same input portion 22 and the refrigerant input pipe 4, and the other end of the two refrigerant channels 3 is connected to the compressor via the corresponding output portion 23 and the refrigerant output pipe 5. During operation, the condensed liquid output from the condenser flows into the input portion 22 and flows along the flow direction of the left refrigerant channel 3 and the right refrigerant channel 3 respectively. The vaporized gas is output to the compressor from the corresponding output portion 23 respectively; this method can accelerate the contact heat exchange efficiency between the condensed liquid and the heat-conducting surface, thereby effectively improving the heat exchange effect of the condensed liquid, and thus improving the cooling efficiency of the evaporator.

[0047] like Figure 9 As shown, Figure 9 The sixth embodiment of the evaporator of the present invention is shown in FIG. Figure 8 The fifth embodiment shown differs in that the groove 21 is interconnected at both ends. An input portion 22 is provided at one end of the groove 21, and an output portion 23 is provided at the other end, facing the input portion 22. This divides the interconnected refrigerant channel 3 into two halves, one on each side, and the other on each side. The input portion 22 and the output portion 23 are connected to the left and right refrigerant channels 3, respectively. One end of each refrigerant channel 3 is connected to the condenser via the same input portion 22 and refrigerant input pipe 4, while the other end of each refrigerant channel 3 is connected to the compressor via the same output portion 23 and refrigerant output pipe 5. During operation, condensed liquid from the condenser flows through the input portion 22 and flows along the flow direction of the left and right refrigerant channels 3, respectively. The vaporized gas is then output to the compressor through the same output portion 23, accelerating the heat exchange efficiency between the condensed liquid and the heat transfer surface, thereby effectively improving the heat exchange effect of the condensed liquid and, in turn, the cooling efficiency of the evaporator.

[0048] The present invention further provides a refrigeration device comprising a housing, wherein the aforementioned flat plate evaporator is disposed within the housing. The refrigeration device is, for example, an ice cream machine, a smoothie machine, a cold drink machine, or an ice maker. Since the aforementioned flat plate evaporator exhibits the aforementioned technical effects, refrigeration devices incorporating the aforementioned evaporator should also exhibit the aforementioned technical effects, and therefore will not be further detailed herein.

[0049] In summary, the present invention forms a refrigerant channel between the flat refrigerant housing and the evaporator housing. This refrigerant channel is coiled around the heat-conducting surface of the evaporator housing. Condensed liquid in the refrigerant channel acts on the heat-conducting surface, directly exchanging heat outward through the shell wall of the heat-conducting surface. By reducing the heat transfer medium, the evaporator's heat transfer efficiency can be effectively improved, thereby greatly enhancing the evaporator's cooling performance. Furthermore, the overall structure is simple, saving assembly space and reducing production costs. At the same time, the refrigerant channel can guide the condensed liquid to increase its flow rate and heat exchange effect.

[0050] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A flat plate evaporator, characterized in that: The refrigerant housing comprises a flat plate-shaped evaporator housing and a refrigerant housing, wherein the refrigerant housing is sealed and mounted on the evaporator housing, and at least one refrigerant channel is formed between the refrigerant housing and the evaporator housing; The refrigerant channel is coiled on the heat-conducting surface of the evaporator shell, and the condensed liquid in the refrigerant channel acts on the heat-conducting surface. Both ends of the refrigerant channel are connected to the condenser and the compressor through pipelines respectively.

2. The flat plate evaporator according to claim 1, wherein The refrigerant shell is provided with at least one coiled groove, the notch of the groove faces the heat-conducting surface, and the groove and the heat-conducting surface enclose the refrigerant channel; the groove is in a planar spiral shape or a planar Z-shaped folded shape.

3. The flat plate evaporator according to claim 2, characterized in that: At least one pair of grooves is provided on the refrigerant housing. Each pair of grooves is arranged on the same plane and is centrally symmetrical around the same central axis. Each pair of grooves is respectively enclosed with the heat conducting surface to form the corresponding refrigerant channel.

4. The flat plate evaporator according to claim 2, wherein: An input portion and an output portion are respectively provided at both ends of the groove, and the input portion and the output portion are respectively communicated with the refrigerant channel; One end of the refrigerant channel is connected to the condenser via the input portion and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output portion and the refrigerant output pipe in sequence.

5. The flat plate evaporator according to claim 1, wherein The refrigerant shell is provided with a groove that bends and extends back and forth along the length direction or width direction of the heat-conducting surface. The groove is folded in a Z shape, and the notch of the groove faces the heat-conducting surface. The groove and the heat-conducting surface enclose the refrigerant channel.

6. The flat plate evaporator according to claim 5, characterized in that The groove includes a plurality of straight pipe sections and a plurality of curved pipe sections, two adjacent straight pipe sections are arranged in parallel, and each curved pipe section is respectively connected to the same end of two adjacent straight pipe sections.

7. The flat plate evaporator according to claim 5, wherein: An input portion and an output portion are respectively provided at the head and tail ends of the groove, and the input portion and the output portion are respectively communicated with the refrigerant channel; One end of the refrigerant channel is connected to the condenser via the input portion and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output portion and the refrigerant output pipe in sequence.

8. The flat plate evaporator according to claim 5, wherein: The groove is provided with an input portion and an output portion, one of the input portion and the output portion is provided at the middle section of the groove and the other is provided at the beginning and end of the groove respectively, the input portion and the output portion are respectively communicated with the refrigerant channel, and the input portion and the output portion are respectively provided at opposite ends of the refrigerant housing; One end of the refrigerant channel is connected to the condenser via the input portion and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output portion and the refrigerant output pipe in sequence.

9. The flat plate evaporator according to claim 5, wherein: The groove is connected to each other at both ends, an input portion is provided at one end of the groove, and an output portion is provided at the other end of the groove, and the input portion and the output portion are respectively connected to the refrigerant channel; One end of the refrigerant channel is connected to the condenser via the input portion and the refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected to the compressor via the output portion and the refrigerant output pipe in sequence.

10. The flat plate evaporator according to any one of claims 4, 7 to 9, characterized in that: An input groove communicating with the refrigerant channel is provided in the input portion, and an outwardly extending input pipe opening is provided on the input portion, the input pipe opening is communicated with the input groove, and the refrigerant input pipe is inserted into the input pipe opening; An output groove communicating with the refrigerant channel is provided in the output portion, and an output pipe opening extending outward is provided on the output portion. The output pipe opening is communicated with the output groove, and the refrigerant output pipe is inserted into the output pipe opening.

11. The flat plate evaporator according to claim 10, wherein: The groove is provided with a plurality of middle input pipe openings at intervals along the flow direction of the refrigerant channel, and the middle input pipe openings are communicated with the refrigerant channel; The middle input pipe opening is located between the input pipe opening and the output pipe opening, and the middle input pipe opening is connected to the condenser through a corresponding refrigerant input pipeline.

12. The flat plate evaporator according to any one of claims 2 to 9, characterized in that: The cross section of the groove is semicircular, triangular, square or rectangular.

13. The flat plate evaporator according to claim 1, wherein The evaporator shell is made of a heat-conducting material, and the refrigerant shell is made of plastic, silica gel or metal.

14. The flat plate evaporator according to claim 1, wherein The evaporator shell has at least a partially straight plate portion, and the evaporator shell is square, circular, or oval.

15. A refrigeration device, characterized in that: The refrigeration device comprises a body, wherein the flat plate evaporator according to any one of claims 1 to 14 is arranged in the body, and the refrigeration device is an ice cream machine, a smoothie machine, a cold drink machine or an ice maker.

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