Suction enthalpy increase components, compressors and refrigeration equipment

Abstract

The present invention provides an air intake enthalpy increasing component, a compressor and a refrigeration device. The air intake enthalpy increasing component includes an upper cover, a through hole is provided on the upper cover, and a receiving cavity is provided on one side of the upper cover; an air intake pipe, the air intake end of the air intake pipe passes through the through hole and extends out of the receiving cavity; the air intake enthalpy increasing component also includes an enthalpy increasing outer pipe, the enthalpy increasing outer pipe is sleeved outside the air intake pipe, the enthalpy increasing outer pipe is installed in the through hole, and an enthalpy increasing channel is formed between the inner peripheral wall of the enthalpy increasing outer pipe and the outer peripheral wall of the air intake pipe; an enthalpy increasing inlet and an enthalpy increasing outlet are provided on the peripheral wall of the enthalpy increasing outer pipe, and the enthalpy increasing inlet and the enthalpy increasing outlet are both connected to the enthalpy increasing channel, the enthalpy increasing inlet is located outside the receiving cavity, and the enthalpy increasing outlet is located inside the receiving cavity. The air intake enthalpy increasing component can reduce the positioning between the static scroll and the shell, increase the radial flexibility of the static scroll, and reduce the vibration transmitted to the shell by the air intake pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an air intake enthalpy increase component, a compressor and a refrigeration device. Background Art

[0002] Scroll compressors are widely used in refrigeration, air conditioning, heat pumps and other fields due to their high efficiency, small size, light weight and stable operation. Generally speaking, a scroll compressor consists of a closed housing, a fixed scroll, a movable scroll, a bracket, a crankshaft, an anti-rotation mechanism oil supply device and a motor. The profiles of the movable scroll and the fixed scroll are both spiral. The movable scroll is eccentric to the fixed scroll and installed 180° apart, so multiple crescent-shaped spaces are formed between the movable scroll and the fixed scroll. When the movable scroll rotates with the center of the fixed scroll as the center and rotates at a certain rotation radius without self-rotation, the outer crescent-shaped space will continue to move toward the center. At this time, the refrigerant is gradually pushed to the center space, and its volume continues to shrink while the pressure continues to increase until it is connected to the central exhaust hole. The high-pressure refrigerant is discharged from the pump body to complete the compression process.

[0003] like Figure 1 As shown, in the conventional enthalpy-increasing high-pressure chamber scroll compressor design, the suction pipe 101 and the enthalpy-increasing pipe 102 are two pipes that are directly inserted into the upper cover 103, and the two pipes are respectively connected to the suction port 141 and the enthalpy-increasing port 142 on the back of the static scroll 104. Since the static scroll 104 and the upper bracket 105 are fixed by positioning pins, and the suction pipe 101 and the enthalpy-increasing pipe 102 have a "positioning" effect on the static scroll 104, the static scroll 104 forms an "over-positioning" state, which may cause the following effects during the operation of the compressor: First, the vibration of the pump body will be transmitted to the housing 106, causing the problem of increased noise; second, the compressor will generate heat during operation, resulting in thermal expansion of the components. "Over-positioning" may result in thermal expansion being restricted, causing deformation of the components, or even jamming, affecting the normal operation of the compressor. Summary of the invention

[0004] The first object of the present invention is to provide an intake enthalpy increasing assembly which can reduce the positioning between the stationary scroll and the shell, increase the radial flexibility of the stationary scroll, and reduce the vibration transmitted to the shell by the intake pipe.

[0005] A second object of the present invention is to provide a compressor using the above-mentioned intake enthalpy increasing component.

[0006] A third object of the present invention is to provide a refrigeration device using the above compressor.

[0007] To achieve the above-mentioned first purpose, the present invention provides an air intake enthalpy increasing component, comprising: an upper cover, a through hole is provided on the upper cover, and a accommodating cavity is provided on one side of the upper cover; an air intake pipe, the air intake end of the air intake pipe passes through the through hole and extends out of the accommodating cavity; the air intake enthalpy increasing component also includes an enthalpy increasing outer tube, the enthalpy increasing outer tube is sleeved on the outside of the air intake pipe, the enthalpy increasing outer tube is installed in the through hole, and an enthalpy increasing channel is formed between the inner peripheral wall of the enthalpy increasing outer tube and the outer peripheral wall of the air intake pipe; an enthalpy increasing inlet and an enthalpy increasing outlet are provided on the peripheral wall of the enthalpy increasing outer tube, the enthalpy increasing inlet and the enthalpy increasing outlet are both connected to the enthalpy increasing channel, the enthalpy increasing inlet is located outside the accommodating cavity, and the enthalpy increasing outlet is located inside the accommodating cavity.

[0008] It can be seen from the above scheme that the system refrigerant enters the intake pipe through the intake end of the intake pipe, and then enters the compressor. The enthalpy-increasing gas enters the enthalpy-increasing channel from the enthalpy-increasing inlet of the enthalpy-increasing outer pipe, and enters the compressor from the enthalpy-increasing outlet to complete the enthalpy-increasing function. By designing the intake pipe and the enthalpy-increasing outer pipe in the form of a sleeve, the positioning of the compressor casing and the static scroll can be reduced, and the radial flexibility of the static scroll is increased. At the same time, due to the separation of the enthalpy-increasing outer pipe, the vibration transmitted to the compressor casing by the intake pipe is reduced. In addition, under low temperature conditions, the suction superheat can also be increased, the compression ratio can be reduced, the compression work can be reduced, and the compressor performance can be improved. In addition, the enthalpy-increasing outer pipe area plays a "diameter expansion" role in the enthalpy-increasing path, reducing the noise of the enthalpy-increasing path.

[0009] A preferred solution is that the inner diameters of both ends of the enthalpy-increasing outer tube are smaller than the inner diameter of the middle portion of the enthalpy-increasing outer tube.

[0010] It can be seen that the enthalpy-increasing outer tube is configured with a structure that is thin at both ends and thick in the middle. In this way, the two ends are conducive to the welding and fixation of the intake pipe and the enthalpy-increasing outer tube, and the middle position is conducive to the formation of an enthalpy-increasing passage, so that there is a buffer cavity between the intake pipe and the upper cover, thereby reducing the vibration transmitted to the shell by the intake pipe.

[0011] A further solution is that the enthalpy-increasing outer tube includes a first conical section, a cylindrical section and a second conical section which are connected in sequence along the axial direction of the enthalpy-increasing outer tube; the inner diameter of the first conical section gradually decreases from one end close to the cylindrical section to one end away from the cylindrical section, and the enthalpy-increasing inlet is located in the first conical section; the inner diameter of the second conical section gradually decreases from one end close to the cylindrical section to one end away from the cylindrical section, and the enthalpy-increasing outlet is located in the second conical section.

[0012] A further solution is that the cylindrical section is connected in a fitting manner with the through hole.

[0013] It can be seen that the cylindrical section cooperates with the through hole to ensure the stability of the connection between the enthalpy increasing outer tube and the upper cover, while ensuring that the maximum position of the cross-section of the enthalpy increasing channel in the enthalpy increasing outer tube cooperates with the upper cover to ensure the vibration reduction effect.

[0014] A preferred solution is that the enthalpy increase inlet and the enthalpy increase outlet are respectively arranged close to the two ends of the enthalpy increase outer tube.

[0015] A preferred solution is that the enthalpy-increasing outer tube is located in the middle of the length direction of the intake pipe, and both ends of the enthalpy-increasing outer tube are fixedly connected to the outer peripheral wall of the intake pipe by welding.

[0016] It can be seen from this that the stability of the connection between the enthalpy increasing outer pipe and the intake pipe can be ensured.

[0017] A preferred solution is that the air intake enthalpy increase component also includes an enthalpy increase inlet pipe and an enthalpy increase outlet pipe, the enthalpy increase inlet pipe is connected to the enthalpy increase inlet, and the enthalpy increase outlet pipe is connected to the enthalpy increase outlet.

[0018] A preferred solution is that the material of the enthalpy increasing outer tube is copper.

[0019] It can be seen that using softer materials such as copper for the enthalpy-increasing outer tube can further reduce the vibration transmitted to the shell by the intake pipe.

[0020] To achieve the above-mentioned second purpose, the present invention provides a compressor, including a static scroll and the above-mentioned intake enthalpy increase component, the static scroll is provided with an intake port and an enthalpy increase port, the exhaust end of the intake pipe is connected to the intake port, and the enthalpy increase outlet of the enthalpy increase outer pipe is connected to the enthalpy increase port.

[0021] To achieve the third objective, the present invention provides a refrigeration device including the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of a conventional compressor.

[0023] Figure 2 is a cross-sectional view of a compressor embodiment of the present invention.

[0024] Figure 3 It is a partial view of a compressor embodiment of the present invention.

[0025] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0026] Figure 5 It is a structural diagram of the enthalpy-increasing outer tube in the compressor embodiment of the present invention.

[0027] Figure 6 1 is a structural diagram of a stationary scroll in a compressor embodiment of the present invention.

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0030] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] In the present invention, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0032] All terms (including technical terms or scientific terms) used in the present invention have the same meanings as those understood by ordinary technicians in the field, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0034] See also Figure 2 and Figure 3 The refrigeration device of this embodiment is an air conditioner, and the refrigeration device includes a compressor 1, and the compressor 1 is a scroll compressor.

[0035] The compressor 1 includes a compressor housing 11 and a motor stator 12, a motor rotor 13, an upper bracket 14, a lower bracket 15, a fixed scroll 16, a movable scroll 17, a cross ring 18, a crankshaft 19, an exhaust pipe 21 and an intake enthalpy increase component 20 located in the compressor housing 11.

[0036] The air intake enthalpy increasing assembly 20 in this embodiment comprises an upper cover 3, an air intake pipe 4, an enthalpy increasing outer pipe 5, an enthalpy increasing inlet pipe 6 and an enthalpy increasing outlet pipe 7. Preferably, the material of the enthalpy increasing outer pipe 5 is copper.

[0037] The motor stator 12 is fixed to the compressor housing 11 by shrink fitting, the upper bracket 14 is fixed to the compressor housing 11 by eight-point welding, the movable scroll 17 and the fixed scroll 16 are installed on the upper bracket 14 opposite to each other with a phase angle difference of 180 degrees, the movable scroll 17 moves under the drive of the crankshaft 19, and meshes with the fixed scroll 16 to form a series of crescent-shaped closed cavities that are isolated from each other and have continuously changing volumes, the fixed scroll 16 is fixed to the upper bracket 14 by screw fasteners, the lower bracket 15 is fixed to the lower support ring 10 by screws, and the lower support ring 10 is fixed to the compressor housing 11 by spot welding.

[0038] When the compressor 1 is running, the motor stator 12 drives the crankshaft 19 to rotate, and the crank of the crankshaft 19 drives the movable scroll 17 to move. Under the anti-rotation restriction of the cross slip ring 18, the movable scroll 17 performs translational motion around the center of the crankshaft 19 at a fixed radius. The refrigerant entering from the suction pipe 4 is sucked into the crescent-shaped suction cavity formed by the movable scroll 17 and the fixed scroll 16, and after being compressed, it is discharged from the exhaust hole 163 of the fixed scroll 16, enters the accommodating cavity 32 between the upper cover 3 and the fixed scroll 16, and then enters the accommodating cavity 111 between the upper bracket 14 and the motor stator 12 through the exhaust groove 164 of the fixed scroll 16 and the exhaust groove 140 of the upper bracket 14, and partially enters the lower end of the motor stator 12 through the flow groove between the motor stator 12 and the compressor housing 11, and finally the high-pressure refrigerant is discharged from the compressor 1 from the exhaust pipe 21.

[0039] like Figure 1 As shown, the existing scroll compressor with enthalpy increase function completes the suction and enthalpy increase functions through the suction pipe 101 and the enthalpy increase pipe 102 respectively. The two pipes need to be inserted into the suction port 141 and the enthalpy increase port 142 on the back of the static scroll 104 respectively, which plays a positioning role for the static scroll 104 and limits the radial movement of the static scroll 104.

[0040] See also Figures 3 to 6 In this embodiment, a through hole 31 is opened in the upper cover 3, and a accommodating cavity 32 is provided on the side of the upper cover 3 facing the compressor housing 11. The enthalpy increasing outer tube 5 is sleeved on the outside of the intake pipe 4. The sleeve structure composed of the intake pipe 4 and the enthalpy increasing outer tube 5 is installed in the through hole 31. The intake end 41 of the intake pipe 4 passes through the through hole 31 and extends out of the accommodating cavity 32.

[0041] The enthalpy-increasing outer tube 5 is located in the middle of the length direction of the air intake pipe 4, and both ends of the enthalpy-increasing outer tube 5 are fixedly connected to the outer peripheral wall of the air intake pipe 4 by welding. The inner diameters of both ends of the enthalpy-increasing outer tube 5 are smaller than the inner diameter of the middle of the enthalpy-increasing outer tube 5. The enthalpy-increasing outer tube 5 is configured with a thin structure at both ends and a thick structure in the middle. In this way, the two ends are conducive to the welding and fixing of the air intake pipe 4 and the enthalpy-increasing outer tube 5, and the middle position is conducive to the formation of an enthalpy-increasing passage, so that there is a buffer space between the air intake pipe 4 and the upper cover 3, thereby reducing the vibration of the air intake pipe 4 transmitted to the shell.

[0042] The enthalpy increasing outer tube 5 comprises a first tapered section 51, a cylindrical section 52 and a second tapered section 53 which are sequentially connected along the axial direction of the enthalpy increasing outer tube 5. The inner diameter of the first tapered section 51 gradually decreases from the end close to the cylindrical section 52 to the end away from the cylindrical section 52. The inner diameter of the second tapered section 53 gradually decreases from the end close to the cylindrical section 52 to the end away from the cylindrical section 52. The cylindrical section 52 is connected in cooperation with the through hole 31 to ensure the stability of the connection between the enthalpy increasing outer tube 5 and the upper cover 3, and at the same time ensure that the maximum cross-section position of the enthalpy increasing channel 56 in the enthalpy increasing outer tube 5 cooperates with the upper cover 3 to ensure the vibration reduction effect.

[0043] An enthalpy-increasing channel 56 is formed between the inner circumferential wall of the enthalpy-increasing outer tube 5 and the outer circumferential wall of the intake pipe 4. An enthalpy-increasing inlet 54 and an enthalpy-increasing outlet 55 are provided on the circumferential wall of the enthalpy-increasing outer tube 5. Both the enthalpy-increasing inlet 54 and the enthalpy-increasing outlet 55 are connected to the enthalpy-increasing channel 56. The enthalpy-increasing inlet 54 is located in the first conical section 51, and the enthalpy-increasing outlet 55 is located in the second conical section 53. The enthalpy-increasing inlet 54 and the enthalpy-increasing outlet 55 are respectively arranged near the two ends of the enthalpy-increasing outer tube 5. The enthalpy-increasing inlet 54 is located outside the accommodating chamber 32, and the enthalpy-increasing outlet 55 is located inside the accommodating chamber 32. The enthalpy-increasing inlet pipe 6 is connected to the enthalpy-increasing inlet 54, and the enthalpy-increasing outlet pipe 7 is connected to the enthalpy-increasing outlet 55.

[0044] An air intake port 161 and an enthalpy increase port 162 are provided on the static vortex disk 16 . The exhaust end 42 of the air intake pipe 4 is connected to the air intake port 161 . The enthalpy increase outlet 55 of the enthalpy increase outer pipe 5 is connected to the enthalpy increase port 162 through the enthalpy increase outlet pipe 7 .

[0045] As can be seen from the above, the system refrigerant enters the suction pipe through the suction end of the suction pipe, and then enters the compressor. The enthalpy-increasing gas enters the enthalpy-increasing channel from the enthalpy-increasing inlet of the enthalpy-increasing outer pipe, and enters the compressor from the enthalpy-increasing outlet to complete the enthalpy-increasing function. By designing the suction pipe and the enthalpy-increasing outer pipe in the form of a sleeve, the positioning of the compressor shell and the static scroll can be reduced, and the radial flexibility of the static scroll is increased. At the same time, due to the separation of the enthalpy-increasing outer pipe, the vibration transmitted to the compressor shell by the suction pipe is reduced. In addition, under low temperature conditions, the suction superheat can also be increased, the compression ratio can be reduced, the compression work can be reduced, and the compressor performance can be improved. In addition, the enthalpy-increasing outer pipe area plays a "diameter expansion" role in the enthalpy-increasing path, reducing the noise of the enthalpy-increasing path. In addition, since the diameter of the suction pipe is related to the suction volume, the suction volume has an impact on the capacity of the compressor, and the suction setting outside may reduce the suction. Therefore, this sleeve can only be set as an internal suction and external enthalpy-increasing structure.

[0046] In addition, the material, shape, size and position of the enthalpy-increasing outer tube relative to the air intake pipe can be changed as needed. The shape, size and specific positions of the enthalpy-increasing inlet and the enthalpy-increasing outlet on the enthalpy-increasing outer tube can also be changed as needed. The above changes can also achieve the purpose of the present invention.

[0047] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Inhalation enthalpy increase component, including: An upper cover, wherein the upper cover is provided with a through hole, and a receiving cavity is provided on one side of the upper cover; An air intake pipe, the air intake end of which passes through the through hole and extends out of the accommodating cavity; Features: The air intake enthalpy increasing assembly further includes an enthalpy increasing outer tube, which is sleeved outside the air intake pipe and installed in the through hole, and an enthalpy increasing channel is formed between the inner peripheral wall of the enthalpy increasing outer tube and the outer peripheral wall of the air intake pipe; An enthalpy-increasing inlet and an enthalpy-increasing outlet are provided on the peripheral wall of the enthalpy-increasing outer tube, and the enthalpy-increasing inlet and the enthalpy-increasing outlet are both connected to the enthalpy-increasing channel, the enthalpy-increasing inlet is located outside the accommodating cavity, and the enthalpy-increasing outlet is located inside the accommodating cavity; The inner diameters of both ends of the enthalpy-increasing outer tube are smaller than the inner diameter of the middle portion of the enthalpy-increasing outer tube.

2. The air intake enthalpy increase component according to claim 1, characterized in that: The enthalpy-increasing outer tube comprises a first conical section, a cylindrical section and a second conical section which are sequentially connected along the axial direction of the enthalpy-increasing outer tube; The inner diameter of the first conical section gradually decreases from one end close to the cylindrical section to one end far away from the cylindrical section, and the enthalpy increase inlet is located in the first conical section; The inner diameter of the second conical section gradually decreases from one end close to the cylindrical section to one end far away from the cylindrical section, and the enthalpy increase outlet is located in the second conical section.

3. The air intake enthalpy increase component according to claim 2, characterized in that: The cylindrical section is cooperatively connected with the through hole.

4. The air intake enthalpy increase component according to any one of claims 1 to 3, characterized in that: The enthalpy increase inlet and the enthalpy increase outlet are respectively arranged close to two ends of the enthalpy increase outer tube.

5. The air intake enthalpy increase component according to any one of claims 1 to 3, characterized in that: The enthalpy-increasing outer tube is located in the middle of the length direction of the intake pipe, and both ends of the enthalpy-increasing outer tube are fixedly connected to the outer peripheral wall of the intake pipe by welding.

6. The air intake enthalpy increase component according to any one of claims 1 to 3, characterized in that: The air intake enthalpy increase component also includes an enthalpy increase inlet pipe and an enthalpy increase outlet pipe, wherein the enthalpy increase inlet pipe is connected to the enthalpy increase inlet, and the enthalpy increase outlet pipe is connected to the enthalpy increase outlet.

7. The air intake enthalpy increase component according to any one of claims 1 to 3, characterized in that: The material of the enthalpy increasing outer tube is copper.

8. A compressor, characterized in that It comprises a stationary vortex and an air intake enthalpy increasing assembly as claimed in any one of claims 1 to 7, wherein the stationary vortex is provided with an air intake port and an enthalpy increasing port, the exhaust end of the air intake pipe is connected to the air intake port, and the enthalpy increasing outlet of the enthalpy increasing outer pipe is connected to the enthalpy increasing port.

9. Refrigeration equipment, characterized in that Comprising the compressor of claim 8.

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