Compressor and air conditioner

Abstract

The present invention discloses a compressor and an air conditioner, comprising: a housing, a motor arranged in the housing, and a pump assembly installed below the motor, wherein the motor drives the crankshaft of the pump assembly to rotate, a refrigeration oil cavity located below the pump assembly is arranged in the housing, and a stirring mechanism for stirring the refrigeration oil and / or for blowing airflow to dissipate heat is arranged at the bottom of the crankshaft. The present invention arranges a stirring mechanism inside the housing, and the stirring mechanism is designed with a stirring rod or a fan blade, and the stirring rod fully stirs the refrigeration oil to prevent the refrigeration oil from solidifying, and the fan blade blows airflow to dissipate heat to the motor, thereby increasing the service life of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor and an air conditioner with a stirring mechanism. Background Art

[0002] With the continuous development of science and technology, compressors are used more and more widely in daily life. As the core component of air conditioners, the durability of compressors directly affects the service life of air conditioners. The compressors in air conditioners are mostly vertical compressors, which include a housing, a motor and a pump body assembly. The motor and the pump body assembly are fixedly installed in the housing. A refrigeration oil cavity is provided at the bottom of the housing. An oil suction pipe extending into the refrigeration oil cavity is provided at the bottom end of the crankshaft of the pump body assembly. The refrigeration oil enters the pump body assembly through the oil suction pipe to achieve lubrication.

[0003] When the refrigerant is not used for a long time or is mixed with dust or the compressor is in a low temperature state, the refrigerant oil in the refrigerant oil cavity is easy to solidify, making it difficult for the refrigerant oil to enter the pump assembly, affecting the working performance of the compressor. Since the internal airflow of conventional compressors cannot circulate, the motor will generate a lot of heat when it rotates quickly inside the shell, causing the temperature in the area where the motor is located to be too high, shortening the service life of the motor.

[0004] Therefore, how to optimize the internal structure of the compressor to make its operation more stable and reliable is a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0005] In order to solve the defects existing in the prior art, the present invention proposes a compressor and an air conditioner with a stirring mechanism. The compressor achieves sufficient stirring of the refrigeration oil and heat dissipation of the motor through the stirring mechanism, ensuring that the compressor can continue to work smoothly in different environments.

[0006] The technical solution adopted by the present invention is to design a compressor, including: a shell, a motor arranged in the shell and a pump body assembly installed below the motor, the motor drives the crankshaft of the pump body assembly to rotate, a refrigeration oil chamber located below the pump body assembly is provided in the shell, and a stirring mechanism for stirring the refrigeration oil and / or for blowing air flow to dissipate heat is provided at the bottom of the crankshaft.

[0007] In one embodiment, the stirring mechanism includes: a central column driven to rotate by a crankshaft, and fan blades fixed to the outer wall of the central column, and the fan blades are arranged at intervals around the central column.

[0008] In another embodiment, the stirring mechanism includes: a central column driven to rotate by a crankshaft, and at least one stirring rod distributed outside the central column, the stirring rod extends into the refrigeration oil chamber, and the stirring rod revolves around the axis of the central column.

[0009] In yet another embodiment, the stirring mechanism includes: a central column driven to rotate by a crankshaft, fan blades fixed on the outer wall of the central column, and a stirring rod installed on the fan blades, the fan blades are arranged at intervals around the central column, and the stirring rod extends into the refrigeration oil chamber.

[0010] Preferably, the stirring rod is rotatable about its axis.

[0011] Preferably, the stirring rod is spiral-shaped.

[0012] Preferably, the bottom end of the center column is rotatably mounted on the bottom surface of the refrigeration oil chamber, and the end of the crankshaft is in extrusion contact with the top surface of the center column.

[0013] Preferably, a clearance hole is provided inside the central column, and filter holes connected to the clearance hole are provided around the central column, and the oil suction pipe extending from the bottom end of the crankshaft is inserted into the clearance hole.

[0014] Preferably, the maximum outer diameter of the pump body assembly is clearance-matched with the inner diameter of the outer shell, and a flow gap for airflow to pass through is formed between the pump body assembly and the outer shell.

[0015] Preferably, through holes are provided around the outer shell, and welding wires for fixing and connecting the pump body assembly and the outer shell are provided in the through holes.

[0016] Preferably, the housing is composed of an upper housing and a lower housing detachably mounted to the upper housing, the motor and the pump assembly are fixedly mounted inside the upper housing, and the lower housing is provided with a refrigeration oil chamber.

[0017] The present invention also provides an air conditioner, which comprises a compressor, and the compressor adopts the above-mentioned compressor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. A stirring mechanism is arranged inside the housing. The stirring mechanism is designed with a stirring rod or a fan blade. The stirring rod fully stirs the refrigeration oil to prevent the refrigeration oil from solidifying. The fan blade blows airflow to dissipate heat for the motor, thereby increasing the service life of the motor.

[0020] 2. The outer shell is detachably mounted through an upper shell and a lower shell, and the motor and pump assembly are fixedly mounted inside the upper shell, making it easy to disassemble and maintain the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is described in detail below with reference to the embodiments and accompanying drawings, wherein:

[0022] Figure 1 It is a schematic diagram of the internal structure of the compressor in the present invention;

[0023] Figure 2 It is a structural schematic diagram of the stirring mechanism in the present invention;

[0024] Figure 3 It is a schematic structural diagram of the upper housing in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the lower shell in the present invention. DETAILED DESCRIPTION

[0026] like Figure 1 As shown, the compressor proposed by the present invention includes a housing 1, a motor 2 and a pump assembly 3. The motor 2 and the pump assembly 3 are both installed inside the housing 1. The top of the housing 1 is fixedly installed with an upper cover assembly of the compressor. The upper cover assembly is fixed to the top of the housing 1 by welding, and the top of the housing 1 is completely covered by the upper cover assembly. The upper cover assembly is provided with a terminal for connecting the motor 2 located inside the housing to an external power source, and the motor 2 is started or shut down by controlling the power supply of the external power source. The outer wall of the motor 2 is interference-fitted with the inner wall of the housing 1. During the assembly process, the housing 1 is heated to increase its inner diameter. After the motor 2 is installed into the housing 1 and cooled, the fixed installation of the motor 2 and the housing 1 is completed.

[0027] The pump assembly 3 is located below the motor 2. The pump assembly 3 generally includes an upper flange, a cylinder, a lower flange and a crankshaft. The crankshaft passes through the upper flange, the cylinder and the lower flange. The crankshaft is provided with a piston located in the cylinder cavity. The crankshaft of the pump assembly 3 is fixedly connected to the rotor of the motor. When the rotor of the motor 2 rotates, the crankshaft of the pump assembly 3 can be driven to rotate synchronously. The piston rotates with the crankshaft to achieve air compression. An air intake pipe 15 is provided on the outer wall of the housing 1. The air intake pipe 15 is connected to the air outlet of the liquid distributor. The air intake pipe 15 is connected to the cylinder air intake hole of the pump assembly 3. The cylinder air intake hole inhales air through the air intake pipe 15.

[0028] The housing 1 is provided with a refrigeration oil chamber 13 located below the pump body assembly 3, and a stirring mechanism 4 is provided at the bottom of the crankshaft, which stirs the refrigeration oil in the refrigeration oil chamber 13 or blows the airflow in the housing 1 to dissipate heat. In order to realize the airflow in the housing 1, the maximum outer diameter of the pump body assembly 3 is matched with the inner diameter of the housing 1, and a flow gap for airflow to pass is formed between the pump body assembly 3 and the housing 1.

[0029] Generally speaking, the maximum outer diameter of the pump body assembly 3 refers to the outer diameter of the upper flange, that is, a flow gap is provided between the upper flange and the inner wall of the outer shell 1. The outer shell 1 is provided with through holes 14 around it, and welding wires are provided in the through holes 14 for fixing the pump body assembly 3 and the outer shell 1. The welding wires usually refer to metal wires, and the upper flange is welded and fixed in the outer shell 1 by welding the welding wires. In one embodiment of the present invention, the number of through holes 14 is 6. Of course, the number of through holes 14 includes but is not limited to 6, as long as a stable connection between the pump body assembly 3 and the outer shell 1 can be achieved. It should be noted here that the through holes 14 are not necessarily sealed by welding wires. From the perspective of optimizing the heat dissipation effect, the through holes 14 can retain the ventilation function so that the internal and external airflows of the outer shell 1 can enter and exit from the through holes.

[0030] like Figure 2 As shown, there are many specific structures of the stirring mechanism, and only three are taken as examples below.

[0031] In the first embodiment, the stirring mechanism 4 includes: a central column 41 and fan blades 42. The fan blades 42 are fixed on the outer wall of the central column 41 and are arranged at intervals around the central column 41. The central column 41 is driven to rotate by a crankshaft. When the crankshaft rotates, the fan blades 42 fan the air flow toward the pump body assembly 3 and the motor 2, so that the temperature inside the outer casing 1 is balanced, avoiding overheating of the motor 2 during operation, and extending the service life of the motor 2.

[0032] In the second embodiment, the stirring mechanism 4 includes: a central column 41 and a stirring rod 43. The stirring rod 43 is distributed on the outside of the central column 41 and extends into the refrigeration oil chamber 13. When the central column 41 rotates, the stirring rod 43 is driven to revolve around the axis of the central column 41. The stirring of the refrigeration oil by the stirring rod 43 prevents the refrigeration oil from solidifying and being difficult to enter the pump body assembly 3. In this embodiment, in order to improve the stirring effect of the refrigeration oil, the stirring rod 43 is rotatably connected to the central column 41. While the stirring rod 43 revolves around the axis of the central column 41, it can also rotate around its own axis, and fully stir the refrigerant during the rotation process.

[0033] In the third embodiment, the stirring mechanism 4 includes: a central column 41, a fan blade 42 and a stirring rod 43. The fan blade 42 is fixed on the outer wall of the central column 41 and is arranged at intervals around the central column 41. The stirring rod 43 is installed on the fan blade 42, and the stirring rod 43 extends into the refrigeration oil chamber 13. When the central column 41 rotates, the stirring rod 43 and the fan blade 42 are driven to revolve around the axis of the central column 41. The stirring of the refrigeration oil by the stirring rod 43 prevents the refrigeration oil from solidifying. The fan blade 42 drives the air flow to the pump body assembly 3 and the motor 2, so that the temperature in the housing 1 is balanced to prevent the motor 2 from overheating. In this embodiment, in order to improve the stirring effect of the refrigeration oil, the stirring rod 43 is rotatably connected to the lower end surface of the fan blade 42. While the stirring rod 43 revolves around the axis of the central column 41, it can also rotate around its own axis, and fully stir the refrigerant during the rotation.

[0034] It should be noted that in the second and third embodiments, in order to enhance the stirring effect of the refrigeration oil, the stirring rod 43 is spiral-shaped. In practical applications, the stirring rod 43 can also be designed to be other shapes, which is not limited by the present invention.

[0035] Further, such as Figure 1 As shown, the connection structure between the stirring mechanism 4 and the crankshaft is as follows: the bottom end of the center column 41 can be rotatably mounted on the bottom surface of the refrigeration oil chamber 13, the end of the crankshaft is in extrusion contact with the top surface of the center column 41, and the center column 41 is driven to rotate by friction when the crankshaft rotates. A clearance hole 412 is provided inside the center column 41, and the aperture of the clearance hole 412 is larger than the outer diameter of the oil suction pipe, so as to prevent the center column 41 or the oil suction pipe from colliding during the rotation process, causing damage to the oil suction pipe and affecting the oil suction of the pump body assembly 3. The center column 41 is surrounded by a filter hole 411 connected to the clearance hole 412, and the oil suction pipe extending from the bottom end of the crankshaft is inserted into the clearance hole 412. The refrigeration oil can enter the center column 41 through the filter hole 411, and then enter the pump body assembly 3 through the oil suction pipe. The filter hole 411 can effectively isolate the impurities and particulate matter in the refrigeration oil outside the center column 41, and prevent the impurities from being sucked into the oil suction pipe and causing blockage.

[0036] Further, if Figure 3 , 4 As shown, in order to facilitate maintenance of the internal structure of the compressor, the shell 1 of the compressor adopts a detachable structure. The shell 1 is composed of an upper shell 11 and a lower shell 12 detachably mounted on the upper shell 11. The upper and lower ends of the upper shell 11 are both open, and the upper cover assembly is mounted on the upper end of the upper shell 11. The motor 2 and the pump body assembly 3 are fixedly mounted inside the upper shell 11. The above-mentioned through hole 13, suction pipe 15, etc. are all arranged on the upper shell 11. The upper end of the lower shell 12 is open and the lower end is closed. The inner cavity of the lower shell 12 is the refrigeration oil cavity 13, and the stirring mechanism 4 is located in the lower shell 12.

[0037] A first disc 111 protruding outward is provided at the lower end of the upper shell 11, and a plurality of first fixing holes 112 are opened on the first disc 111, and the first fixing holes 112 are evenly distributed along the circumference of the first disc 111; a second disc 121 protruding outward is provided at the upper end of the lower shell 12, and a plurality of second fixing holes 122 are opened on the second disc 121, and the second fixing holes 122 are evenly distributed along the circumference of the second disc 121; the first fixing holes 112 correspond to the second fixing holes 122 one by one, and bolts and nuts are installed in the first fixing holes 112 and the second fixing holes 122 to realize a detachable connection between the upper shell 11 and the lower shell 12; after the upper shell 11 and the lower shell 12 are disassembled, the stirring mechanism 5, the cooling oil chamber 13, etc. can be maintained, and the disassembly and assembly are very convenient.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Compressor, including: A housing, a motor disposed in the housing, and a pump assembly installed below the motor, wherein the motor drives the crankshaft of the pump assembly to rotate, a refrigeration oil chamber located below the pump assembly is disposed in the housing, and the bottom of the crankshaft is provided with a stirring mechanism for stirring the refrigeration oil and blowing airflow for heat dissipation; The stirring mechanism comprises: a central column driven to rotate by the crankshaft, a fan blade fixed on the outer wall of the central column, and a stirring rod installed on the fan blade, wherein the fan blade is arranged at intervals around the central column, the stirring rod extends into the refrigeration oil chamber, and the stirring rod can rotate around its axis; When the central column rotates, the stirring rod and the fan blades are driven to revolve around the axis of the central column, the refrigeration oil is stirred by the stirring rod, and the air flow is fanned by the fan blades to flow toward the pump body assembly and the motor.

2. The compressor according to claim 1, characterized in that The stirring rod is spiral-shaped.

3. The compressor according to claim 1, characterized in that The bottom end of the center column is rotatably connected to the bottom surface of the refrigeration oil chamber, and the end of the crankshaft is in compression contact with the top surface of the center column.

4. The compressor according to claim 3, characterized in that A clearance hole is arranged inside the central column, and filter holes connected with the clearance hole are arranged around the central column, and the oil suction pipe extending from the bottom end of the crankshaft is inserted into the clearance hole.

5. The compressor according to any one of claims 1 to 4, characterized in that: The maximum outer diameter of the pump body component is clearance-matched with the inner diameter of the shell, and a flow gap for airflow to pass through is formed between the pump body component and the shell.

6. The compressor according to claim 1, characterized in that Through holes are arranged around the shell, and welding wires for fixing and connecting the pump body assembly and the shell are arranged in the through holes.

7. The compressor according to claim 1, characterized in that The housing is composed of an upper housing and a lower housing detachably mounted on the upper housing. The motor and the pump assembly are fixedly mounted inside the upper housing. The lower housing is provided with the refrigeration oil chamber.

8. Air conditioners, including: A compressor, characterized in that the compressor adopts the compressor described in any one of claims 1 to 7.

Images