Flat plate evaporator and refrigeration device

Abstract

A flat plate evaporator and a refrigeration device. The flat plate evaporator comprises an evaporator housing (1) and a refrigerant housing (2) that are in a flat-plate shape; the refrigerant housing (2) is sealingly mounted on the evaporator housing (1), and at least one refrigerant channel (3) is defined between the refrigerant housing (2) and the evaporator housing (1); the refrigerant channel (3) is coiled on a heat-conducting surface (11) of the evaporator housing (1), a condensed liquid in the refrigerant channel (3) acts upon the heat-conducting surface (11), and two ends of the refrigerant channel (3) are respectively connected to a condenser and a compressor by means of pipes. The condensed liquid can achieve heat exchange with the external environment solely through a shell wall of the heat-conducting surface (11), so that heat conduction efficiency can be effectively improved, thereby improving the cooling performance of the evaporator; moreover, the overall structure can be simplified, thereby saving assembly space and reducing production costs.

Description

Flat plate evaporator and refrigeration equipment TECHNICAL FIELD

[0001] The utility model relates to refrigeration technical field especially relates to a flat plate evaporator and refrigeration equipment. BACKGROUND

[0002] Evaporator is an important component in refrigeration equipment, which is used to realize heat exchange work; such as low temperature condensate liquid carries out heat exchange with outside air through evaporator, vaporization heat absorption, reaches the effect of refrigeration. And the evaporator of some refrigeration equipment currently generally includes evaporator main part and coil pipe, the evaporator main part includes inner and outer shell, and the coil pipe is arranged on the inner shell and contacts with the inner wall of the outer shell. When the condensate liquid is passed into the coil pipe, the condensate liquid realizes heat exchange work to the outside through the coil pipe wall and the shell wall, so as to achieve the refrigeration effect. However, the heat of the above structure needs to be conducted through the coil pipe wall and the shell wall, and due to the relatively more heat conduction medium, the heat conduction efficiency is affected, which leads to low refrigeration effect, and the overall structure is relatively complex and the cost is high.

[0003] SUMMARY

[0004] The utility model provides a flat plate evaporator and refrigeration equipment, can improve heat conduction efficiency and evaporator's cold conducting performance, and the overall structure is simple, and the production cost is low.

[0005] In order to solve the above technical problem, the utility model provides a flat plate evaporator, including the evaporator shell and the refrigerant shell of flat plate, the refrigerant shell is sealedly installed on the evaporator shell, and at least one refrigerant channel is formed in the refrigerant shell and the evaporator shell. The refrigerant channel is coiled and arranged on the heat conduction surface of the evaporator shell, the condensate liquid in the refrigerant channel acts on the heat conduction surface, and the two ends of the refrigerant channel are connected with the condenser and the compressor through the pipeline.

[0006] As the improvement of the above scheme, at least one coiled groove is arranged on the refrigerant shell, the groove opening of the groove faces the heat conduction surface, and the groove and the heat conduction surface form the refrigerant channel. The groove is flat spiral or flat Z-shaped folding.

[0007] As the improvement of the above scheme, at least one pair of grooves is arranged on the refrigerant shell, each pair of grooves is arranged on the same plane and is centrally symmetrical around the same center axis, and each pair of grooves forms the corresponding refrigerant channel by surrounding the heat conduction surface.

[0008] As an improvement of the above-mentioned scheme, two ends of the groove are respectively provided with an input part and an output part, the input part and the output part are respectively communicated with the refrigerant channel; one end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipeline in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipeline in sequence.

[0009] As an improvement of the above-mentioned scheme, the refrigerant shell is provided with a groove extending reciprocally and bending along the length direction or the width direction of the heat conduction surface, the groove is in Z-shaped folding state, the groove opening faces the heat conduction surface, and the groove and the heat conduction surface enclose the refrigerant channel.

[0010] As an improvement of the above-mentioned scheme, the groove comprises a plurality of straight pipe segments and a plurality of bend pipe segments, two adjacent straight pipe segments are arranged in parallel, and each bend pipe segment is connected with the same end of two adjacent straight pipe segments.

[0011] As an improvement of the above-mentioned scheme, two ends of the groove are respectively provided with an input part and an output part, the input part and the output part are respectively communicated with the refrigerant channel; one end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipeline in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipeline in sequence.

[0012] As an improvement of the above-mentioned scheme, the groove is provided with an input part and an output part, either of the input part and the output part is arranged at the middle segment of the groove, and the other is arranged at the first end and the last 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 arranged at opposite ends of the refrigerant shell; one end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipeline in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipeline in sequence.

[0013] As an improvement of the above-mentioned scheme, two ends of the groove are communicated with each other, one end of the groove is provided with an input part, the other end of the groove is provided with an output part, the input part and the output part are respectively communicated with the refrigerant channel; one end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipeline in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipeline in sequence.

[0014] As the improvement of the above-mentioned scheme, the input part is internally provided with an input groove in communication with the refrigerant channel, the input part is externally provided with an input nozzle in communication with the input groove, and the input nozzle is inserted with the refrigerant input pipeline.

[0015] As the improvement of the above-mentioned scheme, the groove is internally provided with a plurality of middle input nozzles in communication with the refrigerant channel, the middle input nozzles are located between the input nozzle and the output nozzle, and the middle input nozzles are connected with the condenser through corresponding refrigerant input pipelines.

[0016] As the improvement of the above-mentioned scheme, the groove is internally provided with a plurality of middle input nozzles in communication with the refrigerant channel, the middle input nozzles are located between the input nozzle and the output nozzle, and the middle input nozzles are connected with the condenser through corresponding refrigerant input pipelines.

[0017] As the improvement of the above-mentioned scheme, the evaporator shell is made of heat-conducting material, and the refrigerant shell is made of plastic, silica gel or metal.

[0018] As the improvement of the above-mentioned scheme, the evaporator shell is at least partially provided with a straight plate part, and the evaporator shell is square, circular or elliptical.

[0019] The utility model also provides a refrigeration equipment, including the body, be equipped with above-mentioned evaporator in the body, the refrigeration equipment is ice cream machine or slush machine or cold drink machine or ice maker.

[0020] The utility model has the advantages that:

[0021] The utility model discloses a refrigeration equipment, which comprises a body, an evaporator is arranged in the body, and the refrigeration equipment is an ice cream machine, a slush machine, a cold drink machine or an ice maker. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a structural schematic view of the first embodiment of the utility model discloses a flat evaporator.

[0023] Fig. 2 is an exploded structural schematic view of the utility model discloses a flat evaporator.

[0024] Fig. 3 is a structure schematic view of the refrigerant shell of the present application;

[0025] Fig. 4 is a sectional structure schematic view of the flat evaporator of the present application;

[0026] Fig. 5 is a structure schematic view of the second embodiment of the flat evaporator of the present application;

[0027] Fig. 6 is a structure schematic view of the third embodiment of the flat evaporator of the present application;

[0028] Fig. 7 is a structure schematic view of the fourth embodiment of the flat evaporator of the present application;

[0029] Fig. 8 is a structure schematic view of the fifth embodiment of the flat evaporator of the present application;

[0030] Fig. 9 is a structure schematic view of the sixth embodiment of the flat evaporator of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings.

[0032] As shown in Figs. 1 to 4, Figs. 1 to 4 show a structure schematic view of the first embodiment of the flat evaporator of the present application, which comprises an evaporator shell 1 in flat plate shape and a refrigerant shell 2, the refrigerant shell 2 is sealingly installed on the evaporator shell 1, and both of them jointly build a flat evaporator in flat cake shape to reduce the overall space occupied. A refrigerant passage 3 is enclosed between the refrigerant shell 2 and the evaporator shell 1; the refrigerant passage 3 is coiled on the heat conduction surface 11 of the evaporator shell 1, and the condensed liquid in the refrigerant passage 3 acts on the heat conduction surface 11 to realize heat exchange work outside through the heat conduction surface 11; the two ends of the refrigerant passage 3 are connected with a condenser and a compressor through pipes respectively.

[0033] In operation, the condenser delivers the condensed liquid to the refrigerant passage 3 through the pipeline, the condensed liquid flowing into the refrigerant passage 3 acts on the heat-conducting surface 11 of one side of the evaporator shell 1, the condensed liquid absorbs heat from the outside through the shell wall of the heat-conducting surface 11, i.e. the condensed liquid exchanges heat with the outside air, and the gas generated by the vaporization of the condensed liquid is discharged back to the compressor through the refrigerant output pipeline 5. The condensed liquid can be guided through the refrigerant passage 3 to form a consistent flow trend, so as to reduce the vortex and resistance that may be generated due to inconsistent directions, thereby improving the flow speed and heat exchange efficiency of the condensed liquid. Meanwhile, the condensed liquid only needs to exchange heat with the outside through the shell wall (i.e. single layer of heat-conducting medium) of the heat-conducting surface 11, and by reducing the heat-conducting medium, the heat conduction efficiency can be effectively improved, thereby improving the cooling performance of the evaporator, simplifying the overall structure, saving assembly space, and reducing production cost.

[0034] Specifically, as shown in FIGS. 2 to 4, the refrigerant shell 2 is provided with at least one coiled groove 21, the groove opening of the groove 21 faces the heat-conducting surface 11, and the groove 21 and the heat-conducting surface 11 enclose the refrigerant passage 3, the condensed liquid in the refrigerant passage 3 can contact the heat-conducting surface 11 through the groove opening, and exchange heat with the outside through the shell wall of the heat-conducting surface 11, thereby achieving the refrigeration effect of the evaporator. The groove 21 is in a planar spiral shape, but is not limited thereto, and can also be in a planar zigzag folded shape or other regular or irregular shape.

[0035] Secondly, the cross section of the groove 21 is semicircular, and the contact diameter (i.e. groove diameter) of the semicircular shape is used to maximize the contact width of the condensed liquid with the evaporator shell 1, i.e. to maximize the heat exchange contact area, thereby improving the heat conduction efficiency of the condensed liquid, and further improving the cooling efficiency of the evaporator. Preferably, the cross section of the groove 21 can also be triangular, square, rectangular or the like, which is not limited herein, and the shape of the cross section only needs to satisfy the maximization of the contact diameter (i.e. groove diameter).

[0036] Further, as shown in FIGS. 2 to 4, the groove 21 is provided with an input portion 22 and an output portion 23 at two ends respectively, and the input portion 22 and the output portion 23 are in communication with the refrigerant passage 3 respectively; one end of the refrigerant passage 3 is connected with the condenser through the input portion 22 and the refrigerant input pipeline 4 in sequence, so that the condenser flows the condensed liquid into the refrigerant passage 3 through the refrigerant input pipeline 4 and the input portion 22, thereby gradually vaporizing the condensed liquid in the refrigerant passage 3 and achieving heat exchange work. The other end of the refrigerant passage 3 is connected with the compressor through the output portion 23 and the refrigerant output pipeline 5 in sequence, when the condensed liquid in the refrigerant passage 3 is vaporized, the gas generated by the vaporization is discharged back to the compressor through the output portion 23 and the refrigerant output pipeline 5, thereby achieving the cooling cycle work and improving the refrigeration effect of the evaporator.

[0037] The input part 22 is provided with an input groove 221 in communication with the refrigerant channel 3, and the input part 22 is provided with an input nozzle 222 extending outward, which is in communication with the input groove 221. One end of the refrigerant input pipeline 4 is inserted into the input nozzle 222 and welded to improve the connection stability and sealing performance. The output part 23 is provided with an output groove 231 in communication with the refrigerant channel 3, and the output part 23 is provided with an output nozzle 232 extending outward, which is in communication with the output groove 231. One end of the refrigerant output pipeline 5 is inserted into the output nozzle 232 and welded to improve the connection stability and sealing performance. When working, the condensed liquid delivered by the condenser flows into the refrigerant channel 3 through the refrigerant input pipeline 4, the input nozzle 222 and the input groove 221 in sequence, so that the condensed liquid is gradually vaporized in the refrigerant channel 3, realizing heat exchange work. When the condensed liquid in the refrigerant channel 3 is vaporized, the gas generated by the vaporization is discharged back to the compressor through the output groove 231, the output nozzle 232 and the refrigerant output pipeline 5 in sequence, realizing the cooling cycle work and improving the refrigeration effect of the evaporator.

[0038] Preferably, the evaporator shell 1 is made of a heat-conducting material. In this embodiment, the material of the evaporator shell 1 is preferably metal, which has good heat conduction effect and can improve the cooling performance. In other embodiments, the user can also use other heat-conducting materials with good heat conduction effect.

[0039] Preferably, in this embodiment, the material of the refrigerant shell 2 is preferably plastic or silica gel to reduce unnecessary heat loss and improve the heat transfer effect at the heat transfer surface 11, thereby improving the refrigeration effect of the evaporator. In other embodiments, the user can also use other materials with poor heat conduction performance. Secondly, the material of the refrigerant shell 2 can also be preferably metal, which can play a role in cooling the outer space and external objects of the refrigerant shell through the metal heat-conducting material.

[0040] Preferably, the evaporator shell 1 has at least a part of a straight plate part 12, such as the evaporator body 1 as a whole straight plate part 12, or the evaporator body 1 has a straight plate part 12, the straight plate part 12 is folded around the four edges or one side edge to form a folded edge part 13, which occupies small space and volume. The evaporator shell 1 is preferably circular or elliptical, but is not limited thereto.

[0041] As shown in Figure 5, Figure 5 shows the structure diagram of the second embodiment of the flat evaporator, which is different from the first embodiment shown in Figures 1 to 4, that is, a plurality of middle input pipe mouths 24 are arranged in the flow direction of the refrigerant channel 3, the middle input pipe mouths 24 are communicated with the refrigerant channel 3, the middle input pipe mouths 24 are located between the input pipe mouth 222 and the output pipe mouth 232, and the middle input pipe mouths 24 are connected with the condenser through corresponding refrigerant input pipes 4. When the evaporator works, the condensed liquid of the condenser flows into different positions of the refrigerant channel 3 through the input pipe mouth 222 and the plurality of middle input pipe mouths 24 and acts on the corresponding positions of the heat conduction surface of the evaporator shell 1, so that the low-temperature condensed liquid quickly exchanges heat at different positions of the evaporator, accelerates the circulation heat exchange rate of the whole condensed liquid, and improves the heat conduction efficiency of the evaporator.

[0042] As shown in Figure 6, Figure 6 shows the structure diagram of the third embodiment of the flat evaporator, which is different from the first embodiment shown in Figures 1 to 4, that is, at least one pair of grooves 21 is arranged on the refrigerant shell 2, each pair of grooves 21 is arranged on the same plane and is centrally symmetric around the same center axis, and each pair of grooves 21 is surrounded by the heat conduction surface to form a corresponding refrigerant channel 3, and the two refrigerant channels 3 are in a plane double helix shape. By arranging two independent refrigerant channels 3, the condensed liquid can be synchronously flowed into and act on the heat conduction surface of the evaporator shell 1, so as to accelerate the heat exchange work between the heat conduction surface and the outside, effectively improve the heat exchange efficiency and effect of the condensed liquid, and improve the heat conduction efficiency of the evaporator.

[0043] As shown in Figure 7, Figure 7 shows the structure diagram of the fourth embodiment of the flat evaporator, which is different from the first embodiment shown in Figures 1 to 4, that is, the evaporator body 1 is preferably square, but is not limited to this; the grooves 21 on the refrigerant shell 2 extend reciprocatingly and are bent along the length direction or the width direction of the heat conduction surface, the grooves 21 are in a Z-shaped folding shape, the groove openings of the grooves 21 face the heat conduction surface, and the grooves 21 and the heat conduction surface surround the refrigerant channel. Among them, the grooves include a plurality of straight pipe segments 25 and a plurality of elbow pipe segments 26, two adjacent straight pipe segments 25 are arranged in parallel, and each elbow pipe segment 26 is connected with the same end of two adjacent straight pipe segments, so as to guide the flow of the condensed liquid, increase the contact area between the condensed liquid and the heat conduction surface, and improve the refrigeration effect of the evaporator.

[0044] When working, the condenser delivers the condensed liquid to the refrigerant passage 3 through the pipeline, the condensed liquid flowing into the refrigerant passage 3 acts on the heat-conducting surface of 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 the condensed liquid realizes heat exchange with the outside air, and the gas after vaporization of the condensed liquid is discharged back to the compressor through the refrigerant output pipeline 5. The condensed liquid can be guided through the refrigerant passage 3 to form a consistent flow trend, so as to reduce the vortex and resistance that may be caused by 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 (i.e. single layer of heat-conducting medium) to realize heat exchange with the outside, and the heat conduction efficiency can be effectively improved by reducing the heat-conducting medium, thereby improving the cooling performance of the evaporator, simplifying the overall structure, saving assembly space and reducing production cost.

[0045] The input part 22 and the output part 23 are respectively arranged at the head end and the tail end of the groove 21 and are respectively communicated with the refrigerant passage 3; one end of the refrigerant passage 3 is connected with the condenser through the input part 22 and the refrigerant input pipeline 4 in sequence, and the other end of the refrigerant passage 3 is connected with the compressor through the output part 23 and the refrigerant output pipeline 5 in sequence. When working, the condensed liquid delivered by the condenser flows into the refrigerant passage 3 through the refrigerant input pipeline 4, the input pipe opening 222 and the input groove 221 in sequence, so that the condensed liquid is gradually vaporized in the refrigerant passage 3, and heat exchange is realized; when the condensed liquid in the refrigerant passage 3 is vaporized, the gas generated by vaporization of the condensed liquid is discharged back to the compressor through the output groove 231, the output pipe opening 232 and the refrigerant output pipeline 5 in sequence, so that the cooling circulation work is realized, and the refrigeration effect of the evaporator is improved.

[0046] As shown in Fig. 8, Fig. 8 shows the structure schematic diagram of the fifth embodiment of the flat evaporator, and the difference between the embodiment and the fourth embodiment shown in Fig. 7 is that the input part 22 and the output part 23 are arranged on the groove 21, either of the input part 22 and the output part 23 is arranged at the middle section of the groove 21, and the other is arranged at the head end and the tail end of the groove 21 respectively, and the input part 22 and the output part 23 are respectively communicated with the refrigerant passage 3, so as to form the refrigerant passage 3 with one input and two independent outputs or the refrigerant passage 3 with one output and two independent inputs.

[0047] Specifically, as shown in Figure 8, the embodiment forms the same input and two independent output refrigerant channels 3. The input portion 22 and the output portion 23 are respectively arranged at opposite ends of the refrigerant shell 2, and the two output portions 23 are respectively arranged at different heights of the same vertical plane to ensure that two refrigerant channels 3 with the same path length are formed, so that the condensed liquid uniformly conducts heat to the heat conduction surface, and the refrigeration uniformity is improved. One end of the two refrigerant channels 3 is connected to the condenser in sequence through the same input portion 22 and the refrigerant input pipeline 4, and the other end of the two refrigerant channels 3 is connected to the compressor in sequence through the corresponding output portion 23 and the refrigerant output pipeline 5. When working, the condensed liquid output by the condenser flows into the input portion 22, and then flows along the flow direction of the left refrigerant channel 3 and the right refrigerant channel 3 respectively, and the gas after vaporization is output to the compressor from the corresponding output portion 23 respectively; in this way, the contact heat exchange efficiency of the condensed liquid and the heat conduction surface can be accelerated, thereby effectively improving the heat exchange effect of the condensed liquid, and further improving the cooling efficiency of the evaporator.

[0048] As shown in Figure 9, Figure 9 shows the structure diagram of the sixth embodiment of the evaporator of the utility model, and the difference between the embodiment and the fifth embodiment shown in Figure 8 is that the first end and the second end of the groove 21 are communicated with each other, one end of the groove 21 is provided with an input portion 22, the other end of the groove 21 is provided with an output portion 23 opposite to the input portion 22, so as to divide the refrigerant channel 3 with the first end and the second end communicated into left and right refrigerant channels 3, and the input portion 22 and the output portion 23 are communicated with the left and right refrigerant channels 3 respectively. One end of the two refrigerant channels 3 is connected to the condenser in sequence through the same input portion 22 and the refrigerant input pipeline 4, and the other end of the two refrigerant channels 3 is connected to the compressor in sequence through the same output portion 23 and the refrigerant output pipeline 5. When working, the condensed liquid output by the condenser flows into the input portion 22, and then flows along the flow direction of the left refrigerant channel 3 and the right refrigerant channel 3 respectively, and the gas after vaporization is output to the compressor from the same output portion 23, so as to accelerate the contact heat exchange efficiency of the condensed liquid and the heat conduction surface, thereby effectively improving the heat exchange effect of the condensed liquid, and further improving the cooling efficiency of the evaporator.

[0049] The utility model also provides a refrigeration equipment, including machine body, be equipped with above-mentioned flat plate evaporator in the machine body. Among them, the refrigeration equipment is ice cream machine or ice sand machine or cold drink machine or ice maker. Because above-mentioned flat plate evaporator has above-mentioned technical effect, the refrigeration equipment including above-mentioned evaporator should also have above-mentioned technical effect, here will not repeat one by one.

[0050] In summary, the utility model discloses between the flat refrigerant shell and evaporator shell enclose and form the refrigerant passage, this refrigerant passage coiling setting on the heat conduction surface of evaporator shell, located the condensed liquid in the refrigerant passage act on the heat conduction surface, to realize heat exchange work directly through the shell wall of this heat conduction surface outward, through reducing heat transfer medium, can effectively improve evaporator heat conduction efficiency, thereby greatly improve the heat dissipation performance of evaporator, and whole simple structure can save the assembly space, reduce production cost.

[0051] The above is the preferred embodiment of the utility model, it should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, can make a number of improvements and refinements, these improvements and refinements also be considered as the protection scope of the utility model.

Claims

1. A plate evaporator, c h a r a c t e r i s e d in that The application relates to an evaporator shell and a refrigerant shell, wherein the refrigerant shell is sealedly mounted on the evaporator shell, and at least one refrigerant channel is formed between the refrigerant shell and the evaporator shell. The refrigerant channel is coiled on the heat-conducting surface of the evaporator shell, and condensed liquid in the refrigerant channel acts on the heat-conducting surface, and the two ends of the refrigerant channel are connected with a condenser and a compressor through pipes respectively.

2. The flat plate evaporator of claim 1, wherein The refrigerant shell is provided with at least one coiled groove, the groove opening of the groove faces the heat-conducting surface, and the groove and the heat-conducting surface form the refrigerant channel.

3. The flat plate evaporator of claim 2, wherein The refrigerant shell is provided with at least one pair of grooves, each pair of the grooves is integrally arranged on the same plane and is centrally symmetrical around the same central axis, and each pair of the grooves and the heat-conducting surface form corresponding refrigerant channels.

4. The flat plate evaporator of claim 2, wherein The two ends of the groove are respectively provided with an input part and an output part, and the input part and the output part are respectively communicated with the refrigerant channel. One end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipe in sequence.

5. The flat plate evaporator as claimed in claim 1, wherein The refrigerant shell is provided with a groove which is reciprocally bent and extends along the length direction or the width direction of the heat-conducting surface, the groove is in Z-shaped folding shape, the groove opening of the groove faces the heat-conducting surface, and the groove and the heat-conducting surface form the refrigerant channel.

6. The flat plate evaporator of claim 5, wherein The groove comprises a plurality of straight pipe segments and a plurality of elbow pipe segments, and two adjacent straight pipe segments are arranged in parallel, and each elbow pipe segment is connected with the same end of two adjacent straight pipe segments.

7. The flat plate evaporator as claimed in claim 5, wherein The two ends of the groove are respectively provided with an input part and an output part, and the input part and the output part are respectively communicated with the refrigerant channel. One end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipe in sequence.

8. The flat plate evaporator as claimed in claim 5, wherein The input part and the output part are arranged at the middle segment of the groove, and the other one is arranged at the first end and the last 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 arranged at opposite ends of the refrigerant shell respectively. One end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipe in sequence.

9. The flat plate evaporator as claimed in claim 5, wherein The two ends of the groove are communicated with each other, one end of the groove is provided with an input part, the other end of the groove is provided with an output part, and the input part and the output part are respectively communicated with the refrigerant channel. One end of the refrigerant channel is connected with the condenser through the input part and a refrigerant input pipe in sequence, and the other end of the refrigerant channel is connected with the compressor through the output part and a refrigerant output pipe in sequence.

10. The plate evaporator according to any of claims 4, 7 to 9, characterized in that The input part is provided with an input groove in communication with the refrigerant channel, and the input part is provided with an outwardly extending input nozzle in communication with the input groove, and the input nozzle is inserted with the refrigerant input pipeline; The output part is provided with an output groove in communication with the refrigerant channel, and the output part is provided with an outwardly extending output nozzle in communication with the output groove, and the output nozzle is inserted with the refrigerant output pipeline.

11. The flat plate evaporator as claimed in claim 10, wherein The groove is provided with a plurality of middle input nozzles spaced along the flow direction of the refrigerant channel, and the middle input nozzles are in communication with the refrigerant channel; The middle input nozzles are located between the input nozzle and the output nozzle, and the middle input nozzles are connected with the condenser through corresponding refrigerant input pipelines.

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

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

14. The flat plate evaporator as claimed in claim 1, wherein The evaporator shell has at least a part of a straight plate, and the evaporator shell is square or circular or elliptical.

15. A refrigeration appliance characterized in that, The refrigeration equipment comprises a body, and the body is provided with the flat plate evaporator as claimed in any one of claims 1 to 14, and the refrigeration equipment is an ice cream machine or a smoothie machine or a cold drink machine or an ice maker.

Images