An evaporator and a refrigeration device

Abstract

This application discloses an evaporator and a refrigeration device. The evaporator includes a shell and a refrigerant section disposed within the shell. A first threaded structure is provided on the outer wall of the refrigerant section, and a second threaded structure is provided on the inner wall. The first and second threaded structures are correspondingly arranged to ensure that the wall thickness of the refrigerant section is equal throughout. The refrigerant section is adapted to enclose and define a refrigerant channel with the shell. The refrigerant channel is spiral-shaped and extends axially along the shell. The refrigerant section also has a refrigerant inlet pipe and a refrigerant outlet pipe. The refrigerant inlet pipe is connected to the inlet end of the refrigerant channel, and the refrigerant outlet pipe is connected to the outlet end of the refrigerant channel. The refrigerant section is the only barrier between the refrigerant and the object to be refrigerated, which improves the heat transfer efficiency between the refrigerant and the object, thus increasing the refrigeration efficiency. The equal wall thickness throughout the refrigerant section ensures that the heat transfer efficiency is the same in all areas of the refrigerant section, guaranteeing uniform cooling of the object and resulting in better refrigeration performance.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, specifically to an evaporator and refrigeration equipment. Background Technology

[0002] In the field of refrigeration, the evaporator, as one of the components of the refrigeration system, absorbs heat through the evaporation process of the refrigerant, thereby achieving a cooling effect on the surrounding environment or a specific space.

[0003] Existing evaporators typically employ conventional structures such as spiral copper tubes or fins, positioned between an inner and outer cooling liner. The object to be cooled is placed inside the inner liner. However, these structures have limited or no contact area with the inner liner. For example, when spiral copper tubes are placed between the inner and outer liners, the contact area is limited to a single spiral line; similarly, when fins are placed between the inner and outer liners, they do not contact the inner liner, resulting in low heat transfer efficiency and consequently, low cooling efficiency. Furthermore, evaporators with spiral copper tubes and fins have complex structures and require cumbersome installation processes. Utility Model Content

[0004] One objective of this application is to provide an evaporator with a simple structure and high refrigeration efficiency.

[0005] Another object of this application is a refrigeration device.

[0006] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: an evaporator, comprising a shell and a refrigerant section disposed within the shell, wherein a first threaded structure is provided on the outer wall of the refrigerant section and a second threaded structure is provided on the inner wall of the refrigerant section, the first threaded structure and the second threaded structure being correspondingly arranged such that the wall thickness of the refrigerant section is equal at all points, the refrigerant section being adapted to enclose and define a refrigerant channel with the shell, the refrigerant channel being spiral-shaped and extending along the axial direction of the shell, and the refrigerant section also being provided with a refrigerant inlet pipe and a refrigerant outlet pipe, the refrigerant inlet pipe being connected to the input end of the refrigerant channel and the refrigerant outlet pipe being connected to the output end of the refrigerant channel.

[0007] Preferably, the refrigerant channel has a trapezoidal cross-section, and the axial dimension of the refrigerant channel on the side closer to the housing is greater than the axial dimension of the refrigerant channel on the side closer to the refrigerant section.

[0008] As another preferred embodiment, the axial dimension of the refrigerant channel on the side near the housing can be implemented as 6mm~10mm, the axial dimension of the refrigerant channel on the side near the refrigerant section can be implemented as 1mm~4mm, and the maximum radial dimension of the refrigerant channel can be implemented as 4mm~7mm.

[0009] Further preferably, the cross-section of the refrigerant channel is an isosceles trapezoidal shape.

[0010] Furthermore, the wall thickness of the refrigerant section can be implemented as 0.8mm to 2mm.

[0011] Furthermore, the pitch of the first thread structure can be implemented as 8mm~12mm.

[0012] Furthermore, the refrigerant section includes a first end wall and a second end wall extending radially along the housing, and a third side wall extending axially along the housing. The third side wall is disposed between the first end wall and the second end wall. A first threaded structure is disposed on the outer side of the third side wall, and a second threaded structure is disposed on the inner side of the third side wall. The first end wall and the second end wall are sealed to the housing, and the first threaded structure seals against the inner wall of the housing, so that the refrigerant section and the housing enclose and define the refrigerant channel.

[0013] Furthermore, the inner wall of the refrigerant section is provided with an input port and an output port that are connected to the refrigerant channel. The input port is located at the bottom of the refrigerant section, and the output port is located at the top of the refrigerant section. The refrigerant inlet pipe is connected to the refrigerant channel through the input port, and the refrigerant outlet pipe is connected to the refrigerant channel through the output port.

[0014] Furthermore, the diameter of the refrigerant inlet pipe is smaller than the diameter of the refrigerant outlet pipe.

[0015] To achieve at least one of the above objectives, the technical solution adopted in this application is: a refrigeration device, including a body, wherein the above-mentioned evaporator is disposed in the body.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] The evaporator of this application includes a shell and a refrigerant section disposed within the shell. The outer wall of the refrigerant section has a first threaded structure to form a refrigeration surface, and the inner wall of the refrigerant section has a second threaded structure to form a contact surface. The refrigeration surface is adapted to contact the refrigerant, and the contact surface is adapted to contact the object to be refrigerated. This ensures that the refrigerant and the object to be refrigerated are separated only by the refrigerant section, thereby improving the heat transfer efficiency between the refrigerant and the object to be refrigerated, and thus improving the refrigeration efficiency. Furthermore, the corresponding arrangement of the first and second threaded structures ensures that the wall thickness of the refrigerant section is equal throughout, resulting in the same refrigeration efficiency in all areas of the refrigerant section, guaranteeing that the object to be refrigerated can be cooled uniformly, leading to a better refrigeration effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the evaporator in this application.

[0019] Figure 2 This is a three-dimensional cross-sectional view of the evaporator in this application.

[0020] Figure 3 This is a cross-sectional plan view of the evaporator in this application.

[0021] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 100, housing; 200, refrigerant section; 210, first end wall; 220, second end wall; 230, third side wall; 240, first threaded structure; 250, second threaded structure; 260, input port; 270, output port; 300, refrigerant passage; 400, refrigerant inlet pipe; 500, refrigerant outlet pipe. Detailed Implementation

[0023] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0025] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0027] like Figure 1-4 As shown, this application provides an evaporator, which includes a housing 100 and a refrigerant section 200 disposed within the housing 100. The outer wall of the refrigerant section 200 is provided with a first threaded structure 240 to form a refrigeration surface, and the inner wall of the refrigerant section 200 is provided with a second threaded structure 250 to form a contact surface. The refrigerant section 200 is adapted to enclose and define a refrigerant channel 300 with the housing 100. The refrigerant channel 300 is spiral and extends along the axial direction of the housing 100. The refrigerant section 200 is also provided with a refrigerant inlet pipe 400 and a refrigerant outlet pipe 500. The refrigerant inlet pipe 400 is connected to the input end of the refrigerant channel 300, and the refrigerant outlet pipe 500 is connected to the output end of the refrigerant channel 300. The refrigerant inlet pipe 400 is adapted to connect the refrigerant channel 300 and the condenser, and the refrigerant outlet pipe 500 is adapted to connect the refrigerant channel 300 and the compressor.

[0028] During operation, the condenser delivers liquid refrigerant to the refrigerant passage 300 through the refrigerant inlet pipe 400. The liquid refrigerant flows and vaporizes within the refrigerant passage 300, absorbing heat. The object to be refrigerated can come into contact with the refrigerant section 200 and exchange heat with it, thereby achieving refrigeration of the object. The gaseous refrigerant flows back to the compressor through the refrigerant outlet pipe 500 to enter the next cycle.

[0029] The spiral arrangement of the refrigerant passage 300 increases its length, ensuring that the liquid refrigerant can fully vaporize and absorb heat within it. This prevents insufficient vaporization, which could lead to decreased refrigeration efficiency, and avoids liquid refrigerant flowing back into the compressor, causing compressor malfunction. Furthermore, the refrigeration surface of the refrigerant section 200 contacts the refrigerant, and the contact surface of the refrigerant section 200 contacts the object being refrigerated. The spiral arrangement of the refrigerant passage 300 increases the contact area between the object and the refrigerant, thereby improving heat transfer efficiency and enhancing the evaporator's refrigeration performance.

[0030] Furthermore, the corresponding arrangement of the first thread structure 240 and the second thread structure 250 ensures that the wall thickness of the refrigerant section 200 is uniform and equal at all points. Consequently, each region of the refrigerant section 200 has the same heat conduction efficiency. When each part of the object to be cooled comes into contact with the contact surface of each region of the refrigerant section 200, each part of the object to be cooled can be cooled uniformly, resulting in a better cooling effect and preventing uneven cooling of the object to be cooled.

[0031] Preferably, the wall thickness of the refrigerant section 200 is 0.8 mm to 2 mm.

[0032] Preferably, the pitch of the first thread structure 240 is 8mm to 12mm.

[0033] Furthermore, such as Figure 4 As shown, the refrigerant channel 300 has a trapezoidal cross-section, and the axial dimension D of the refrigerant channel 300 near the housing 100 is greater than the axial dimension d of the refrigerant channel 300 near the refrigerant section 200. Compared with conventional circular or other shapes, the trapezoidal cross-section of the refrigerant channel 300 can provide a larger contact area between the refrigerant and the object to be refrigerated per unit length, thereby enhancing the heat exchange effect. In addition, the shape of the trapezoidal channel can change the flow state of the refrigerant, causing stronger disturbance and turbulence during the flow process; compared with a smooth circular channel, the sides and corners of the trapezoidal channel will form certain resistance and interference during the refrigerant flow, breaking the laminar boundary layer, making the refrigerant flow more irregular, increasing the relative motion and heat exchange frequency between the refrigerant and the refrigerant section 200, thereby improving the refrigeration efficiency.

[0034] Preferably, the cross-section of the refrigerant channel 300 is an isosceles trapezoid shape.

[0035] Preferably, the axial dimension of the refrigerant channel 300 near the housing 100 is 6mm~10mm, the axial dimension of the refrigerant channel 300 near the refrigerant section 200 is 1mm~4mm, and the maximum radial dimension L of the refrigerant channel 300 is 4mm~7mm. It is worth mentioning that, as... Figure 1 As shown, the axial dimension of the refrigerant channel 300 is the axial direction of the housing 100, which means the axial dimension of the refrigerant channel 300 is the height of the refrigerant channel 300; the radial dimension of the refrigerant channel 300 is the radial direction of the housing 100, which means the radial dimension of the refrigerant channel 300 is the width of the refrigerant channel 300.

[0036] Furthermore, the refrigerant section 200 includes a first end wall 210, a second end wall 220, and a third side wall 230. The first end wall 210 and the second end wall 220 extend radially along the housing 100, and the third side wall 230 extends axially along the housing 100. The first end wall 210 and the second end wall 220 are integrally formed and connected to the top and bottom ends of the third side wall 230, respectively, so that the cross-section of the refrigerant section 200 is U-shaped. The first threaded structure 240 is disposed on the outer wall of the third side wall 230, and the second threaded structure 250 is disposed on the inner wall of the third side wall 230. When the refrigerant section 200 is disposed inside the housing 100, the first end wall 210 and the second end wall 220 are both sealed and connected to the inner wall of the housing 100, and the first threaded structure 240 seals against the inner wall of the housing 100. Thus, the refrigerant section 200 and the housing 100 enclose and define the refrigerant channel 300. The evaporator, defined by the shell 100 and the refrigerant section 200, encloses and defines the refrigerant channel height 300, resulting in a simple overall structure and easy assembly. During the assembly of the refrigerant section 200 and the shell 100, since the refrigerant section 200 is a one-piece molded structure, the shell 100 can be heated while the refrigerant section 200 is cooled. After the shell 100 expands due to heat and the refrigerant section 200 shrinks due to cooling, the refrigerant section 200 is then installed inside the shell 100. Once the shell 100 and the refrigerant section 200 return to room temperature, they are fitted with an interference fit.

[0037] Furthermore, the inner wall of the refrigerant section 200 is provided with an input port 260 and an output port 270 that communicate with the refrigerant channel 300. The input port 260 is located at the bottom of the refrigerant section 200 and corresponds to the input end of the refrigerant channel 300, while the output port 270 is located at the top of the refrigerant section 200 and corresponds to the output end of the refrigerant channel 300. The refrigerant inlet pipe 400 is connected to the refrigerant channel 300 through the input port 260, and the refrigerant outlet pipe 500 is connected to the refrigerant channel 300 through the output port 270. The refrigerant inlet pipe 400 can transport the pre-cooled liquid refrigerant in the condenser to the refrigerant passage 300, providing the necessary cooling capacity for the subsequent evaporation process. Through the refrigerant inlet pipe 400, the liquid refrigerant can smoothly and continuously enter the refrigerant passage 300, ensuring the smooth progress of the heat exchange process. In the refrigerant passage 300, the liquid refrigerant vaporizes into gaseous refrigerant, which is then transported to the compressor through the refrigerant outlet pipe 500 for further compression and recycling.

[0038] Preferably, the diameter of the refrigerant inlet pipe 400 is smaller than the diameter of the refrigerant outlet pipe 500. The refrigerant inlet pipe 400 contains liquid refrigerant, and the refrigerant flow rate is relatively small; therefore, the diameter of the refrigerant inlet pipe 400 is relatively small. The refrigerant outlet pipe 500 contains gaseous refrigerant, and to ensure that the gaseous refrigerant can be smoothly delivered to the compressor, the diameter of the refrigerant outlet pipe 500 is designed to be larger.

[0039] This application also provides a refrigeration device, which includes a body and the aforementioned evaporator is disposed inside the body.

[0040] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An evaporator, characterized by The device includes a housing and a refrigerant section disposed within the housing. The outer wall of the refrigerant section has a first threaded structure, and the inner wall of the refrigerant section has a second threaded structure. The first threaded structure and the second threaded structure are arranged correspondingly to ensure that the wall thickness of the refrigerant section is equal at all points. The refrigerant section is adapted to enclose and define a refrigerant channel with the housing. The refrigerant channel is spiral-shaped and extends along the axial direction of the housing. The refrigerant section is also provided with a refrigerant inlet pipe and a refrigerant outlet pipe. The refrigerant inlet pipe is connected to the input end of the refrigerant channel, and the refrigerant outlet pipe is connected to the output end of the refrigerant channel.

2. The evaporator of claim 1, wherein, The refrigerant channel has a trapezoidal cross-section, and the axial dimension of the refrigerant channel on the side closer to the housing is greater than the axial dimension of the refrigerant channel on the side closer to the refrigerant section.

3. The evaporator of claim 2, wherein, The axial dimension of the refrigerant channel near the housing can be 6mm to 10mm, the axial dimension of the refrigerant channel near the refrigerant section can be 1mm to 4mm, and the maximum radial dimension of the refrigerant channel can be 4mm to 7mm.

4. The evaporator of claim 2, wherein, The cross-section of the refrigerant channel is an isosceles trapezoidal shape.

5. The evaporator of claim 1, wherein, The wall thickness of the refrigerant section can be implemented as 0.8mm to 2mm.

6. The evaporator of claim 1, wherein, The pitch of the first thread structure can be implemented as 8mm~12mm.

7. The evaporator of claim 1, wherein The refrigerant section includes a first end wall and a second end wall extending radially along the housing, and a third side wall extending axially along the housing. The third side wall is integrally formed and connected between the first end wall and the second end wall. A first threaded structure is disposed on the outer side of the third side wall, and a second threaded structure is disposed on the inner side of the third side wall. The first end wall and the second end wall are sealed to the housing, and the first threaded structure sealably abuts against the inner wall of the housing, so that the refrigerant section and the housing enclose and define the refrigerant channel.

8. The evaporator as claimed in claim 1, characterized in that, The inner wall of the refrigerant section has an input port and an output port that are connected to the refrigerant channel. The input port is located at the bottom of the refrigerant section, and the output port is located at the top of the refrigerant section. The refrigerant inlet pipe is connected to the refrigerant channel through the input port, and the refrigerant outlet pipe is connected to the refrigerant channel through the output port.

9. The evaporator of claim 8, wherein, The diameter of the refrigerant inlet pipe is smaller than the diameter of the refrigerant outlet pipe.

10. A refrigeration appliance characterized in that, It includes a body, wherein an evaporator as described in any one of claims 1-9 is disposed within the body.

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