Refrigeration evaporator

Abstract

The refrigeration evaporator comprises an outer shell and an inner shell, the outer shell is arranged on the outer side of the inner shell in a sleeving mode, the upper side and the lower side of the inner shell are fixedly connected with the inner wall of the outer shell, and condensation cavities are formed between the upper side and the lower side of the inner shell and the inner wall of the outer shell; the inner shell is provided with an inflow injection mechanism used for guiding a refrigerant to enter the condensation cavity and an outflow mechanism used for guiding the refrigerant to leave the condensation cavity, and the inflow injection mechanism and the outflow mechanism communicate with the condensation cavity. Therefore, the cooling effect of different positions of the inner side of the inner shell is more uniform, and the condensation cavity can enable a refrigerant to be quickly, directly and uniformly sprayed to the inner wall of the outer shell, so that the cooling capacity conduction speed is accelerated; in this way, compared with the mode that a spiral pipe or a semi-circular groove type spiral pipe is tightly attached to the shell of an evaporator, the refrigeration evaporator with the refrigerant directly sprayed to the shell is lower in machining cost and more efficient in refrigeration effect.

Description

Technical Field

[0001] This invention relates to the field of ice-making appliances or refrigeration equipment, specifically a refrigeration evaporator. Background Technology

[0002] Patent document CN223064106U discloses "An Evaporator for a Continuous Ice-Making Machine". The specific details include: during installation, an ice cutter is fitted onto a connecting rod; spiral fins are welded to the outer wall of the inner tube and sealed to the outer tube; a screw assembly is inserted into and fixed to the inner wall of the inner tube; and finally, a sealing flange is installed to complete the assembly. During ice making, purified water enters through the inlet pipe, and refrigerant enters through the refrigerant inlet pipe. As the refrigerant passes through the channels separated by the spiral fins, it exchanges heat with the purified water, causing the purified water to freeze. The ice is then sent to the ice cutter by the rotation of the spiral blades, which breaks the ice into appropriately sized edible ice.

[0003] When the refrigerant flows between the inner and outer tubes under the action of the spiral fins, the refrigerant cannot fully contact the corresponding position of the spiral fins on the inner tube due to the obstruction of the spiral fins. This results in a relatively low heat exchange efficiency at the corresponding position of the spiral fins inside the inner tube, and the heat exchange efficiency between the refrigerant and the inner tube is not uniform. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a refrigeration evaporator that, by setting a condensation chamber, allows the refrigerant to have more sufficient contact with the inner shell, thereby making the cooling effect more uniform at different positions on the inner side of the inner shell.

[0005] The objective of this invention is achieved as follows: A refrigeration evaporator includes an outer shell and an inner shell. The outer shell is fitted over the outer side of the inner shell. The upper and lower sides of the inner shell are connected and fixed to the inner wall of the outer shell. A condensation cavity is formed between the upper and lower sides of the inner shell and the inner wall of the outer shell. The inner shell is provided with an inlet injection mechanism for guiding refrigerant into the condensation cavity and an outlet mechanism for guiding refrigerant out of the condensation cavity. The inlet injection mechanism and the outlet mechanism are respectively connected to the condensation cavity.

[0006] The inner shell has a connecting flange on its upper and / or lower sides, which extends vertically. The inner wall of the outer shell is fixed to the connecting flange by welding.

[0007] The inlet injection mechanism is a first inlet pipe, which passes through the upper side of the inner shell, enters the condensation chamber, and extends towards the bottom of the condensation chamber. An inlet gap is formed between the lower end of the first inlet pipe and the bottom of the condensation chamber. The outlet mechanism is an outlet pipe, which is located on the upper side of the inner shell and communicates with the condensation chamber.

[0008] The lower end of the first inlet pipe is provided with a guide slope, which forms a flow guiding structure with the bottom plane of the condensation chamber to make the fluid generate a circumferential movement tendency.

[0009] The inlet injection mechanism includes a second inlet pipe and several inlets. The inlets are distributed circumferentially around the center of the inner shell on the lower side of the inner shell. The second inlet pipe is connected to each inlet. The outlet mechanism is an outlet pipe, which is located on the upper side of the inner shell. The condensation chamber is connected to both the inlets and the outlet pipe.

[0010] An inlet disc is fixedly connected to the bottom outer side of the inner shell. The bottom of the inner shell is provided with a concave ring. Each inlet is distributed circumferentially on the concave ring. The inlet disc is connected to the bottom of the inner shell and is divided into a flow channel by the concave ring. The second inlet pipe passes through the inlet disc and is connected to the flow channel.

[0011] The inlet is in the shape of a vertically arranged hole, or the inlet is in the shape of an oblique hole, and the inclination direction of the inlet is tangent to the distribution direction of the inlet.

[0012] The beneficial effects of this invention are as follows: The condenser chamber allows the refrigerant to be sprayed quickly, directly, and evenly onto the inner wall of the outer shell, thereby accelerating the transfer of cold energy. This refrigeration evaporator, which allows the refrigerant to be sprayed directly onto the outer shell, is less expensive to manufacture and has a more efficient cooling effect than many traditional methods that involve tightly attaching spiral tubes or semi-circular groove spiral tubes to the evaporator shell. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the first embodiment of the present invention.

[0014] Figure 2 This is a cross-sectional view of the second embodiment of the present invention.

[0015] Figure 3 This is an enlarged view of section A in the second embodiment of the present invention.

[0016] Figure 4 This is a cross-sectional view of the third embodiment of the present invention.

[0017] Figure 5 This is an enlarged view of section B in the third embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] First embodiment: See Figure 1This refrigeration evaporator includes an outer shell 1 and an inner shell 2. The outer shell 1 is fitted onto the outside of the inner shell 2. The upper and lower sides of the inner shell 2 are connected and fixed to the inner wall of the outer shell 1. A condensing cavity 3 is formed between the upper and lower sides of the inner shell 2 and the inner wall of the outer shell 1. The inner shell 2 is provided with an inlet injection mechanism for guiding the refrigerant into the condensing cavity 3 and an outlet mechanism for guiding the refrigerant out of the condensing cavity 3. The inlet injection mechanism and the outlet mechanism are respectively connected to the condensing cavity 3. By setting the condensing cavity 3, the refrigerant can have more sufficient contact with the inner shell 2, thereby making the cooling effect at different positions on the inner side of the inner shell 2 more uniform.

[0020] The condenser 3 allows the refrigerant to be sprayed quickly, directly and evenly onto the inner wall of the outer shell 1, thereby accelerating the speed of cold transfer. This refrigeration evaporator, which allows the refrigerant to be sprayed directly onto the outer shell, has a lower processing cost and a more efficient cooling effect than many traditional methods that involve tightly attaching spiral tubes or semi-circular groove spiral tubes to the evaporator shell.

[0021] Furthermore, the inner shell 2 is provided with a connecting flange 21 on the upper and / or lower sides. The connecting flange 21 extends vertically and is fixed to the inner wall of the outer shell 1 by welding, which increases the contact area between the inner shell 2 and the outer shell 1 and makes the connection structure between the two more stable.

[0022] Furthermore, the inlet injection mechanism is a first inlet pipe 41, which passes through the upper side of the inner shell 2 and enters the condensing cavity 3 and extends towards the bottom of the condensing cavity 3. An inlet gap is formed between the lower end of the first inlet pipe 41 and the bottom of the condensing cavity 3. The outlet mechanism is an outlet pipe 43, which is located on the upper side of the inner shell 2 and communicates with the condensing cavity 3, so that the refrigerant can directly enter the bottom of the condensing cavity 3 and then diffuse from the bottom of the condensing cavity 3 to the upper side, thereby making the refrigerant distribution and cooling effect in the condensing cavity 3 more uniform. The compressor delivers refrigerant to the first inlet pipe 41, and the refrigerant finally flows back to the compressor through the treatment pipe 43 to form a cycle of refrigeration.

[0023] Furthermore, the lower end of the first inlet pipe 41 is provided with a guide slope 411. The guide slope 411 and the bottom plane of the condensing cavity 3 form a flow guiding structure to make the fluid move in a circumferential direction. This allows the refrigerant to form a spiral upward trend at the bottom of the condensing cavity 3, preventing the refrigerant from accumulating at the bottom of the condensing cavity 3 and allowing the refrigerant to diffuse better in the condensing cavity 3.

[0024] Second embodiment: See Figure 2 , Figure 3The difference between this embodiment and the first embodiment is that the inlet injection mechanism of this refrigeration evaporator includes a second inlet pipe 42 and several inlet ports 22. The inlet ports 22 are distributed circumferentially around the center of the inner shell 2 on the lower side of the inner shell 2. The second inlet pipe 42 is connected to each inlet port 22. The outlet mechanism is an outlet pipe 43, which is located on the upper side of the inner shell 2. The condensing chamber 3 is connected to the inlet ports 22 and the outlet pipe 43, so that the refrigerant can enter the condensing chamber 3 from different positions at the bottom of the condensing chamber 3, and the distribution of the refrigerant is more uniform. Finally, it flows back to the compressor through the outlet pipe 43 for cyclic operation.

[0025] Furthermore, an inlet disc 5 is fixedly connected to the bottom outer side of the inner shell 2, and an inner concave ring 23 is provided at the bottom of the inner shell 2. Each inlet port 22 is distributed circumferentially on the inner concave ring 23. The inlet disc 5 is connected to the bottom of the inner shell 2 and forms a diversion groove 51 with the inner concave ring 23. The second inlet pipe 42 passes through the inlet disc 5 and communicates with the diversion groove 51. After the refrigerant flows into the diversion groove 51 through the second inlet pipe 42, it can flow into different inlets 22 at the same time. Only a single second inlet pipe 42 is needed to deliver refrigerant to each inlet port 22.

[0026] Furthermore, the inlet 22 is shaped like a vertically arranged hole.

[0027] The remaining undescribed parts are the same as in the first embodiment and will not be repeated here.

[0028] Third embodiment: See Figure 4 , Figure 5 The difference between this embodiment and the second embodiment is that the inlet 22 of this refrigeration evaporator is in the shape of an oblique hole, and the inclination direction of the inlet 22 is tangent to the distribution direction of the inlet 22, so that the refrigerant flowing out of each inlet 22 has a spiral upward diffusion tendency, so that the refrigerant can be sprayed and diffused faster and more evenly in the condensation cavity 3.

[0029] The remaining undescribed parts are the same as in the second embodiment, and will not be repeated here.

[0030] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration evaporator, characterized in that, The device includes an outer shell (1) and an inner shell (2). The outer shell (1) is fitted onto the outside of the inner shell (2). The upper and lower sides of the inner shell (2) are connected and fixed to the inner wall of the outer shell (1). A condensing cavity (3) is formed between the upper and lower sides of the inner shell (2) and the inner wall of the outer shell (1). The inner shell (2) is provided with an inlet injection mechanism for guiding the refrigerant into the condensing cavity (3) and an outlet mechanism for guiding the refrigerant out of the condensing cavity (3). The inlet injection mechanism and the outlet mechanism are respectively connected to the condensing cavity (3).

2. The refrigeration evaporator according to claim 1, characterized in that: The inner shell (2) is provided with a connecting flange (21) on its upper and / or lower sides. The connecting flange (21) extends vertically and is fixed to the inner wall of the outer shell (1) by welding.

3. The refrigeration evaporator according to claim 1, characterized in that: The inlet injection mechanism is a first inlet pipe (41), which passes through the upper side of the inner shell (2) and enters the condensing chamber (3) and extends toward the bottom of the condensing chamber (3). An inlet gap is formed between the lower end of the first inlet pipe (41) and the bottom of the condensing chamber (3). The outlet mechanism is an outlet pipe (43), which is located on the upper side of the inner shell (2) and communicates with the condensing chamber (3).

4. The refrigeration evaporator according to claim 3, characterized in that: The lower end of the first inlet pipe (41) is provided with a guide slope (411), and the guide slope (411) and the bottom plane of the condensation chamber (3) form a flow guiding structure for causing the fluid to move in a circumferential direction.

5. The refrigeration evaporator according to claim 1, characterized in that: The inlet injection mechanism includes a second inlet pipe (42) and several inlets (22). The inlets (22) are distributed circumferentially around the center of the inner shell (2) on the lower side of the inner shell (2). The second inlet pipe (42) is connected to each inlet (22). The outlet mechanism is an outlet pipe (43). The outlet pipe (43) is located on the upper side of the inner shell (2). The condensation chamber (3) is connected to the inlet (22) and the outlet pipe (43) respectively.

6. The refrigeration evaporator according to claim 5, characterized in that: An inlet disc (5) is fixedly connected to the bottom outer side of the inner shell (2). The bottom of the inner shell (2) is provided with an inner concave ring (23). Each inlet (22) is distributed circumferentially on the inner concave ring (23). The inlet disc (5) is connected to the bottom of the inner shell (2) and forms a diversion groove (51) with the inner concave ring (23). The second inlet pipe (42) passes through the inlet disc (5) and communicates with the diversion groove (51).

7. The refrigeration evaporator according to claim 5, characterized in that: The inlet (22) is in the shape of a vertically arranged hole, or the inlet (22) is in the shape of an oblique hole, and the inclination direction of the inlet (22) is tangent to the distribution direction of the inlet (22).

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