CN212838363U - Compressor heat insulation structure and compressor - Google Patents

Abstract

The embodiment of the utility model discloses compressor heat-insulating structure, including fixed cylinder, bearing and apron in proper order, be provided with the chamber of breathing in the cylinder, the bearing is hugged closely the terminal surface department of cylinder, the outside protrusion of part of apron forms thermal-insulated portion, space in the thermal-insulated portion is thermal-insulated chamber, the position in thermal-insulated chamber with the position in chamber of breathing in is corresponding. The utility model discloses a compressor heat-proof structure is through the setting in thermal-insulated chamber for the part in the chamber of breathing in that corresponds on the outside high temperature high pressure refrigerant's of apron heat can not the direct transmission bearing, thereby can let the refrigerant in the intracavity of breathing in heat up and reduce the compression effect by the heating.

Description

Compressor heat insulation structure and compressor

Technical Field

The utility model relates to a compressor field especially relates to a compressor heat insulation structure and compressor.

Background

The rotor compressor drives a crankshaft and a piston to do periodic refrigerant compression rotary motion in a cylinder through a motor, an air suction cavity and a compression cavity are separated by a sliding block in the cylinder, the refrigerant in the air suction cavity is low-temperature and low-pressure, and the refrigerant in the compression cavity is high-temperature and high-pressure. The performance of the compressor is related to the displacement of the refrigerant, and when the sucked refrigerant is heated and expands, the amount of the refrigerant actually compressed to apply work decreases, and finally the performance decreases.

The existing solution adds a separate heat insulation cavity to the lower bearing, but such solution is complicated in process and high in material cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's shortcoming and not enough, the embodiment of the utility model discloses a compressor heat-insulating structure, including fixed cylinder, bearing and apron in proper order, be provided with the chamber of breathing in the cylinder, the bearing is hugged closely the terminal surface department of cylinder, the outside protrusion of part of apron forms thermal-insulated portion, space in the thermal-insulated portion is thermal-insulated chamber, the position in thermal-insulated chamber with the position in chamber of breathing in is corresponding.

As a further improvement of the present invention, the bearing is provided with an exhaust hole and a through hole, a part of the cover plate protrudes outward to form an exhaust part, a space in the exhaust part is an exhaust cavity, and the exhaust cavity is communicated with the exhaust hole and the through hole; the exhaust cavity is not communicated with the heat insulation cavity.

As a further improvement of the present invention, the cover plate is connected to the bearing by a bolt fastener.

As a further improvement of the utility model, the cross section of the heat insulation part is an arc-shaped surface.

As a further improvement, the bearing is a lower bearing in the compressor, and the inside lubricating oil layer that is provided with of exhaust cavity.

As a further improvement of the present invention, the heat insulating chamber is arranged around the bearing center.

As a further improvement of the present invention, the heat insulating portion is formed by the cover plate being punched.

The utility model discloses a compressor heat-proof structure is through the setting in thermal-insulated chamber for the part in the chamber of breathing in that corresponds on the outside high temperature high pressure refrigerant's of apron heat can not the direct transmission bearing, thereby can let the refrigerant in the intracavity of breathing in heat up and reduce the compression effect by the heating.

The utility model also discloses a compressor, it includes foretell compressor heat insulation structure.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a sectional view of the compressor of the present invention.

Fig. 2 is a schematic view of the bearing of the present invention.

Fig. 3 is a schematic view of the connection between the bearing and the cover plate according to the present invention.

Fig. 4 is a schematic diagram of the cover plate in a half-section view when the bearing of the present invention is connected to the cover plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-4, an embodiment of the present invention discloses a heat insulation structure for a compressor, which includes a cylinder 100, a bearing and a cover plate 300 fixed in sequence, wherein a suction chamber 110 is disposed in the cylinder 100, the bearing is tightly attached to an end surface of the cylinder 100, a portion of the cover plate 300 protrudes outward to form a heat insulation portion 310, a space in the heat insulation portion 310 is a heat insulation chamber 311, and a position of the heat insulation chamber 311 corresponds to a position of the suction chamber 110. The heat insulation cavity 311 formed by the cover plate 300 is disposed at a position corresponding to the air suction cavity 110, so that the heat insulation cavity 311 forms a barrier, and heat of a refrigerant at a high temperature and high pressure region outside the cover plate 300 cannot be directly transferred to a region of the bearing corresponding to the air suction cavity 110 through the cover plate 300, so that the temperature of the bearing attached to the air suction cavity 110 is maintained at a low level, and heating of a low-temperature and low-pressure refrigerant in the air suction cavity 110 is avoided.

The cylinder 100, the bearing 200, and the cover plate 300 may be coupled by bolt fasteners. In this embodiment, the bearing 200 is a lower bearing in the compressor, and a lubricating oil layer is disposed inside the heat insulation cavity 311, and in other embodiments, the bearing may be an upper bearing of the compressor. In this embodiment, the lubricant layer is accumulated on the bottom surface of the heat insulation cavity 311 by gravity, the heat of the refrigerant outside the cover plate 300 is transferred from the cover plate 300 to the lubricant layer, and meanwhile, since the lubricant in the heat insulation cavity 311 does not move almost, the lubricant absorbs the heat and then is less in contact with the bearing, the temperature of the surface of the bearing located in the heat insulation cavity 311 is lower, and the heat transfer to the air suction cavity 110 is reduced.

In this embodiment, the heat insulating portion 310 is disposed around the center of the bearing, and this arrangement makes the entire structure more compact. In this embodiment, the cross section of the heat insulation portion 310 is an arc surface, so that the heat insulation cavity 311 has a certain noise reduction effect, and noise generated by the compressor can be reduced. In order to improve the manufacturing efficiency, the heat insulation part 310 is formed by stamping the cover plate 300 in this embodiment, and in other embodiments, the heat insulation part 310 may be fixed to the cover plate 300 by welding.

In this embodiment, the heat insulation structure is used for a dual-cylinder compressor, the bearing is provided with a vent hole 210 and a through hole 220, a part of the cover plate 300 protrudes outwards to form a vent part 320, a space in the vent part 320 is a vent cavity 321, and the vent cavity 321 is communicated with the vent hole 210 and the through hole 220; the exhaust cavity 321 is not communicated with the heat insulation cavity 311. The compressed high-temperature and high-pressure refrigerant flows out of the discharge hole 210, and flows upward from the through hole 220 to the outside of the cylinder 100 through the discharge chamber 321. The exhaust cavity 321 is not communicated with the insulating cavity 311 to avoid the temperature rise in the insulating cavity 311.

The embodiment also discloses a compressor, which comprises the compressor heat insulation structure. The compressor can prevent the high-temperature and high-pressure refrigerant outside the cylinder 100 from contacting with the metal at the position of the lower bearing corresponding to the air suction cavity 110, and direct heat transfer does not occur.

The utility model discloses a compressor heat-proof structure is through the setting in thermal-insulated chamber for the part in the chamber of breathing in that corresponds on the outside high temperature high pressure refrigerant's of apron heat can not the direct transmission bearing, thereby can let the refrigerant in the intracavity of breathing in heat up and reduce the compression effect by the heating.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims (8)

1. A compressor heat insulation structure is characterized in that: including fixed cylinder, bearing and apron in proper order, be provided with the chamber of breathing in the cylinder, the bearing hugs closely the terminal surface department of cylinder, the part of apron outwards protrudes and forms thermal-insulated portion, the space in the thermal-insulated portion is thermal-insulated chamber, the position in thermal-insulated chamber with the position in chamber of breathing in is corresponding.

2. A compressor insulation structure according to claim 1, wherein: the bearing is provided with an exhaust hole and a through hole, part of the cover plate protrudes outwards to form an exhaust part, the space in the exhaust part is an exhaust cavity, and the exhaust cavity is communicated with the exhaust hole and the through hole; the exhaust cavity is not communicated with the heat insulation cavity.

3. A compressor insulation structure according to claim 1, wherein: the cover plate is connected with the bearing through a bolt fastener.

4. A compressor insulation structure according to claim 1, wherein: the cross section of the heat insulation part is an arc-shaped surface.

5. A compressor insulation structure according to claim 1, wherein: the bearing is a lower bearing in the compressor, and a lubricating oil layer is arranged in the heat insulation cavity.

6. A compressor insulation structure according to claim 1, wherein: the insulated cavity is disposed about the bearing center.

7. A compressor insulation structure according to claim 1, wherein: the heat insulating portion is formed by stamping the cover plate.

8. A compressor, characterized by: a compressor insulation structure comprising any one of the above claims 1 to 7.

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