CN214273879U

CN214273879U - Wearable air conditioner is with oilless linear drive compressor

Info

Publication number: CN214273879U
Application number: CN202022585930.1U
Authority: CN
Inventors: 印辉; 沈玉涛; 吴胜章; 张亦峰
Original assignee: Jiangsu Shangqi Heavy Industry Technology Co ltd
Current assignee: Jiangsu Shangqi Heavy Industry Technology Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-09-24
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses an oilless linear driving compressor for wearable air conditioner, which comprises a casing, wherein a compression cavity is arranged in the middle part of the casing, an air suction valve is arranged at one side of the middle part of the compression cavity, and an exhaust valve is arranged at the other side; a pair of metal plungers are symmetrically and slidably arranged in the compression cavity, one end, far away from the compression cavity, of each plunger is connected with a plate spring assembly, each plate spring assembly comprises a plurality of annular plate springs, the plungers are fixedly connected with the inner edges of the plate springs, and the inner wall of the shell is fixedly connected with the outer edges of the plate springs; the outer side of each plunger is provided with a permanent magnet and a coil, and the coil is connected with a power supply. The utility model discloses a high low pressure check valve of opposite formula plunger and middle split type improves the stability of compressor operation.

Description

Wearable air conditioner is with oilless linear drive compressor

Technical Field

The utility model belongs to the compressor field especially relates to a wearable air conditioner is with no oily linear drive compressor.

Background

The air conditioner compressor functions to compress a driving refrigerant in an air conditioner refrigerant circuit. An air conditioner compressor is generally installed in an outdoor unit. The air conditioner compressor extracts the refrigerant from a low-pressure area, compresses the refrigerant and sends the compressed refrigerant to a high-pressure area for cooling and condensation, heat is emitted into air through the radiating fins, the refrigerant is changed from a gas state into a liquid state, and the pressure is increased. The common air conditioner compressor cannot normally work under special environment due to the fact that lubricating oil is used in design.

A linear compressor is one of reciprocating piston compressors. The linear compressor drives the piston to do reciprocating linear motion in the cylinder by using the linear motor, theoretically, the radial acting force on the piston is completely eliminated, so that the mechanical abrasion between the piston and the cylinder wall and the generated useless work are eliminated, the service life and the energy conversion efficiency are greatly improved, and the linear compressor has very important application in special fields of aviation, aerospace, military and the like which need long service life and high-efficiency work.

A linear compressor with the publication number of CN203394701U comprises an exhaust mechanism and a compressor assembly, wherein the exhaust mechanism comprises an exhaust valve plate, a pre-tightening spring and an exhaust cavity cover; the exhaust valve plate is arranged at the end part of the cylinder, the exhaust hole and the exhaust valve plate are both arranged on the exhaust valve plate, the exhaust cavity cover is fastened on the wall surface of the outer end of the cylinder to form a closed cavity as an exhaust cavity of the compressor, and the pre-tightening spring is arranged in the exhaust cavity.

However, the above linear compressor has the following disadvantages: the air inlet valve and the exhaust valve are arranged at one end of the compressor, and the reciprocating motion of the piston rod can cause the compressor to shake greatly, so that the compressor is unstable in operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the not enough of background art provides a wearable air conditioner is with no oily linear drive compressor, adopts opposed plunger and middle split type high-low pressure check valve, improves the stability of compressor operation.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:

an oilless linear driving compressor for wearable air conditioners comprises a shell, wherein a compression cavity is arranged in the middle of the shell, an air suction valve is arranged on one side of the middle of the compression cavity, and an exhaust valve is arranged on the other side of the middle of the compression cavity;

a pair of metal plungers are symmetrically and slidably arranged in the compression cavity, one end, far away from the compression cavity, of each plunger is connected with a plate spring assembly, each plate spring assembly comprises a plurality of annular plate springs, the plungers are fixedly connected with the inner edges of the plate springs, and the inner wall of the shell is fixedly connected with the outer edges of the plate springs; the outer side of each plunger is provided with a permanent magnet and a coil, and the coil is connected with a power supply.

Furthermore, power connectors are symmetrically arranged at two ends of the shell and connected with the coils.

Furthermore, end covers are arranged at two ends of the shell, and the power supply connector is arranged on the end covers.

Further, the plunger comprises a piston body and a piston rod, and the length of the piston rod is not less than half of the length of the plunger.

Furthermore, the plate spring assembly comprises a plurality of supporting plate springs and a plurality of balancing plate springs, the supporting plate springs are mutually attached to and mounted at the end part of the piston rod, and the balancing plate springs are uniformly distributed between the piston body and the supporting plate springs.

Further, the side wall of the piston body is provided with an air groove.

Furthermore, the middle part of the compression cavity is communicated with a pair of air guide chambers which are respectively connected with an air suction valve and an air exhaust valve.

Further, the air suction valve and the air exhaust valve are both one-way valves.

Further, the plunger and the compression chamber are in clearance fit.

Further, a bushing is arranged in the casing, a cylinder sleeve is fixed in the bushing, a compression cavity is arranged in the cylinder sleeve, the permanent magnet is fixed between the bushing and the cylinder sleeve, and the coil is arranged between the permanent magnet and the cylinder sleeve.

The utility model adopts the above technical scheme to compare with prior art, have following technological effect:

1. the utility model is an oil-free compressor, which does not need to use lubricating oil, thereby having no directional limitation, conforming to the use requirement of wearable air-conditioning clothes and being capable of normally operating under the condition of inclination or even inversion;

2. the utility model discloses an opposite formula plunger structure can offset the vibration that the plunger motion brought. The shell, the end cover, the plunger, the plate spring assembly, the permanent magnet and the coil of the whole compressor are symmetrically designed, so that the vibration caused by structural design is greatly reduced;

3. the plate spring assembly is adopted to support the piston rod of the plunger, so that the piston rod does not generate frictional resistance when moving;

4. the middle of the air inlet valve and the middle of the air outlet valve are separately arranged, the structural design is reasonable, and the working efficiency is high.

5. Utilize the utility model discloses a compressor can be so that the condensing temperature of condenser can reach 40 degrees, and evaporating temperature reaches 20 degrees to the energy efficiency ratio (cop, for the ratio of refrigerating output and input power) is greater than 3.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

fig. 2 is a schematic structural view of the leaf spring in the present embodiment.

In the figure, 1, a power connector; 2. an end cap; 3. a housing; 31. a central axis; 4. a bushing; 41. a cylinder liner; 42. a compression chamber; 43. a gas conducting chamber; 5. a leaf spring assembly; 51. a support plate spring; 52. a balance plate spring; 53. an outer edge; 54. an inner edge; 55. a spiral wire groove; 56. a leaf spring arm; 6. a plunger; 61. a piston body; 62. a piston rod; 7. a permanent magnet; 71. a coil; 8. an air intake valve; 9. and (4) exhausting the valve.

Detailed Description

The technical scheme of the utility model is further explained in detail with the attached drawings as follows:

an oil-free linear drive compressor for wearable air conditioners is shown in fig. 1 and 2 and comprises a shell 3 which is of a symmetrical structure and is symmetrical by taking a central axis 31 at the center of the shell as a symmetry axis. The casing 3 is a hollow casing, two sides of the casing are provided with end covers 2, and the end covers 2 are provided with power connectors 1 for connecting a power supply.

The middle part in the machine shell 3 is provided with a bushing 4, a cylinder sleeve 41 is fixed in the bushing 4, the cylinder sleeve 41 is hollow, and the hollow part is a compression cavity 42. The compression chamber 42 is transversely arranged, a pair of plungers 6 is symmetrically and slidably arranged in the compression chamber 42 along the central axis 31, the plungers 6 comprise piston bodies 61 and piston rods 62, and the length of the piston rods 62 is not less than half of the length of the plungers 6. Piston body 61 is slidably connected in compression chamber 42 and is in clearance fit with compression chamber 42, and the sidewall of piston body 61 is provided with air groove 611 to prevent vacuum from being formed between piston body 61 and compression chamber 42, thereby reducing resistance of piston body 61 when sliding in compression chamber 42. The piston rod 62 extends out of the compression chamber 42 and is supported by the leaf spring assembly 5. The leaf spring assembly 5 consists of several leaf springs. The plate spring is of an annular structure and comprises an inner edge 54 and an outer edge 53, wherein a plurality of spiral grooves 55 are formed in the middle of the plate spring, so that a plate spring arm 56 is formed between the adjacent spiral grooves 55, and the inner edge 54 and the outer edge 53 can generate elastic deformation in the axial direction of the plate spring.

In the structure of this embodiment, the inner edge 54 of the plate spring is fixedly connected with the piston rod 62, and the outer edge 53 is fixedly connected with the inner wall of the housing 3. Thereby enabling the piston rod 62 to move without friction while also serving to support the plunger 6. In terms of action classification, the leaf spring assembly 5 in the present embodiment includes a plurality of supporting leaf springs 51 and a plurality of balancing leaf springs 52, the supporting leaf springs 51 are closely attached to each other by the plurality of leaf springs and are mounted on the end of the piston rod 62, and the balancing leaf springs 52 are evenly spaced on the piston rod 62 between the piston body 61 and the supporting leaf springs 51. The supporting leaf spring 51 plays the main supporting role, while the balancing leaf spring 52 plays the role of balancing the entire plunger 6, which is distributed as evenly as possible over the entire rod body of the piston rod 62, thereby improving the balance of the plunger 6.

A boss is provided extending toward the cylinder liner 41 in the middle of the liner 4 so as to leave a gap between the liner 4 and the cylinder liner 41. The permanent magnet 7 and the coil 71 are arranged in the gap, and the coil 71 is connected to the power connector 1. Because the electrified conductor can generate force in the magnetic field, the force depends on the intensity of the magnetic field and the current, and the movement direction depends on the direction of the magnetic field and the direction of the current; therefore, in this embodiment, when the coil 71 is connected to the ac power, the metallic plunger 6 will reciprocate in the compression chamber 42 under the action of the coil 71 and the permanent magnet 7.

The middle part of the compression cavity 42 is communicated with a pair of air guide chambers 43, wherein one air guide chamber 43 is connected with an air suction valve 8, and the other air guide chamber 43 is connected with an air exhaust valve 9. The suction valve 8 and the exhaust valve 9 are both one-way valves.

Description of specific embodiments:

when the power connectors 1 at the two ends of the housing are connected to an alternating current power supply, the coil 71 is energized, and the action of the magnetic field of the permanent magnet 7 generates a force on the piston body 61, thereby driving the piston body 61 to reciprocate in the compression chamber 42. When the two piston bodies 61 move towards two sides separately, negative pressure is generated in the compression cavity 42, the suction valve 8 is automatically opened under the action of air pressure, and therefore low-pressure air outside the suction valve 8 is sucked into the compression cavity 42; when the two piston bodies 61 move relatively, the air pressure in the compression chamber 42 increases sharply, and when the air pressure in the compression chamber 42 is greater than the air pressure outside the suction valve 8 and the exhaust valve 9, the suction valve 8 closes automatically, the exhaust valve 9 opens automatically, and high-pressure air is discharged.

The utility model has the advantages that:

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope. Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. The utility model provides a wearable air conditioner is with oil-free linear drive compressor which characterized in that: comprises a casing (3), a compression cavity (42) is arranged in the middle of the casing (3), one side of the middle part of the compression cavity (42) is provided with a suction valve (8), and the other side is provided with an exhaust valve (9);

a pair of metal plungers (6) is symmetrically and slidably arranged in the compression cavity (42), one end, far away from the compression cavity (42), of each plunger (6) is connected with a plate spring assembly (5), each plate spring assembly (5) comprises a plurality of annular plate springs, the plungers (6) are fixedly connected with the inner edges (54) of the plate springs, and the inner wall of the shell (3) is fixedly connected with the outer edges (53) of the plate springs; the outer side of each plunger (6) is provided with a permanent magnet (7) and a coil (71), and the coil (71) is connected with a power supply.

2. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 1, wherein: the power connector (1) is symmetrically arranged at two ends of the casing (3), and the power connector (1) is connected with the coil (71).

3. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 2, wherein: the power supply is characterized in that end covers (2) are arranged at two ends of the casing (3), and the power supply connector (1) is installed on the end covers (2).

4. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 1, wherein: the plunger (6) comprises a piston body (61) and a piston rod (62), and the length of the piston rod (62) is not less than half of the length of the plunger (6).

5. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 4, wherein: the plate spring assembly (5) comprises a plurality of supporting plate springs (51) and a plurality of balancing plate springs (52), the supporting plate springs (51) are attached to each other and mounted at the end of the piston rod (62), and the balancing plate springs (52) are uniformly distributed between the piston body (61) and the supporting plate springs (51).

6. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 4, wherein: an air groove (611) is formed in the side wall of the piston body (61).

7. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 1, wherein: the middle part of the compression cavity (42) is communicated with a pair of air guide chambers (43) which are respectively connected with the air suction valve (8) and the air discharge valve (9).

8. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 1, wherein: the air suction valve (8) and the air discharge valve (9) are both one-way valves.

9. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 1, wherein: the plunger (6) and the compression chamber (42) are in clearance fit.

10. An oil-free linear drive compressor for a wearable air conditioner as claimed in claim 1, wherein: be provided with bush (4) in casing (3), bush (4) internal fixation cylinder liner (41), cylinder liner (41) inside is compression chamber (42), permanent magnet (7) are fixed between bush (4) and cylinder liner (41), coil (71) set up between permanent magnet (7) and cylinder liner (41).