CN218717365U - Compressor shell, compressor and warm logical equipment - Google Patents

Abstract

The utility model discloses a casing of compressor and warm equipment that leads to that have it, the casing includes casing, division board and apron, the division board lid is in the upper end opening part of casing, just the apron cover is located the outside of division board, the perisporium upper end of casing stack up in the outside of the outer peripheral face of division board, the perisporium lower extreme of apron stack up in the outside of the outer peripheral face of division board, the upper end of casing with the lower extreme of apron has the clearance in order to spill the outer peripheral face of division board, just at least partly decurrent projection of the outer peripheral face of the perisporium of apron is located the outer peripheral face of the perisporium upper end of casing is inboard. Through using above-mentioned technical scheme, can improve the structural stability of casing, and be convenient for equipment and welding.

Description

Compressor shell, compressor and warm equipment that leads to

Technical Field

The utility model relates to a compressor technical field, in particular to casing of compressor, compressor that has this casing and the warm equipment that leads to that has this compressor.

Background

In the prior art, the boss is arranged on the peripheral wall of the compressor partition plate, the boss lower end face and the lower shell upper end face are in lap joint and positioned, and the boss upper end face is in lap joint with the upper cover, so that the outer diameter of the upper cover is larger than that of the lower shell, and the production line is not facilitated.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent. Therefore, an object of the present invention is to provide a compressor casing, which can improve the structural stability of the casing and facilitate assembling and welding by stacking the partition plate with the cover plate and the casing, and providing a gap between the upper end of the casing and the lower end of the cover plate to expose the outer peripheral surface of the partition plate.

Another object of the present invention is to provide a compressor, which includes the casing of the compressor.

Still another object of the utility model is to provide a heating and ventilating device, including aforementioned compressor.

According to the utility model discloses the casing of compressor, the casing includes casing, division board and apron, the division board lid is in the upper end opening part of casing, just the apron cover is located the outside of division board, the perisporium upper end of casing stack up in the outside of the outer peripheral face of division board, the perisporium lower extreme of apron stack up in the outside of the outer peripheral face of division board, the upper end of casing with the lower extreme of apron has the clearance in order to spill the outer peripheral face of division board, just at least partly decurrent projection of the outer peripheral face of the perisporium of apron is located the outer peripheral face of the perisporium upper end of casing is inboard.

According to the utility model discloses the casing of compressor, through arranging division board and apron and casing range upon range of, and the upper end of casing has the outer peripheral face of clearance in order to spill the division board with the lower extreme of apron, can improve the structural stability of casing, and is convenient for equipment and welding.

In addition, the shell of the compressor according to the above embodiments of the present invention may also have the following additional technical features:

in some examples of the present invention, the outer peripheral surface of the partition plate includes a first surface portion, a first step surface, and a second surface portion, the first step surface is connected to the first surface portion and between the second surface portion, and the downward projection of the first surface portion is located inside the second surface portion, the lower end of the peripheral wall of the cover plate is stacked on the outside of the first surface portion, and the upper end of the peripheral wall of the casing is stacked on the outside of the second surface portion.

In some examples of the present invention, the first step surface is higher than an upper end of a peripheral wall of the casing.

In some examples of the present invention, a lower end of the peripheral wall of the cover plate is supported on the first step surface.

In some examples of the present invention, the peripheral wall of the housing includes a cylindrical portion and an upper end portion, the upper end portion is connected to the upper end of the cylindrical portion and outwardly expands with respect to the cylindrical portion, and a second step surface is formed between an inner peripheral surface of the upper end portion and an inner peripheral surface of the cylindrical portion, and the partition plate is supported on the second step surface.

In some examples of the invention, at least a portion of the upper end is configured in a shape that gradually flares outward from bottom to top.

In some examples of the invention, the upper end surface of the upper end portion is parallel to the second step surface and is perpendicular to the axis of the casing.

In some examples of the present invention, the upper end of the peripheral wall of the casing has a gap with the outer peripheral surface of the partition plate, and the upper end of the gap is open.

In some examples of the present invention, a gap between an upper end of the peripheral wall of the housing and a lower end of the peripheral wall of the cover plate is greater than or equal to 0.5 mm and less than or equal to 2.5mm in the up-down direction.

In some examples of the present invention, the outer side of the lower end of the peripheral wall of the cover plate has a chamfer structure to form a slope gradually shrinking inward from top to bottom on the outer peripheral surface of the lower end of the peripheral wall of the cover plate.

In some examples of the invention, the slope is inclined at an angle of no more than 30 ° relative to the cover plate axis.

According to the utility model discloses compressor, including the casing of aforementioned compressor.

According to the utility model discloses compressor through using aforementioned casing on the compressor, can improve the structural stability of compressor, and do benefit to the assembly, does benefit to and reduces the assembly space.

According to the utility model discloses warm equipment of ventilating, including aforementioned compressor.

According to the utility model discloses warm equipment of leading to, through using aforementioned compressor on warm equipment of leading to, do benefit to the manufacturing cost who reduces warm equipment of leading to.

Drawings

Fig. 1 is a schematic structural diagram of a compressor according to some embodiments of the present invention.

Fig. 2 is an enlarged view of fig. 1 at circle a.

Fig. 3 is a partial structural schematic diagram of a partition plate in some embodiments of the present invention.

Fig. 4 is a partial structural schematic view of a compressor in the related art.

Reference numerals are as follows:

100. a compressor; 10. a housing; 11. a barrel portion; 13. an upper end portion; 12. a second step surface; 20. a cover plate; 30. a partition plate; 31. a first face; 34. a first step surface; 32. a second face; 33. a third face portion; 101. a discharge port; 1', a boss; 2', an upper cover; 3', a lower shell.

Detailed Description

Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

With reference to fig. 1 to 3, according to the embodiment of the present invention, the casing of the compressor includes a casing 10, a partition plate 30 and a cover plate 20, the partition plate 30 covers an upper opening of the casing 10, and the cover plate 20 covers the outer side of the partition plate 30, that is, the partition plate 30 can separate the casing 10 and the cover plate 20, when assembling, the partition plate 30 can provide a support for the casing 10 and the cover plate 20, and is convenient for positioning, and a sealed chamber can be further separated in the casing. Further, the upper end of the peripheral wall of the casing 10 is laminated outside the outer peripheral surface of the partition plate 30, and the lower end of the peripheral wall of the cover plate 20 is laminated outside the outer peripheral surface of the partition plate 30, so that the stability of connection can be improved, and the upper end of the casing 10 and the lower end of the cover plate 20 have a gap, so that the outer peripheral surface of the partition plate 30 can be exposed, and the stability of connection between the partition plate 30, the cover plate 20, and the casing 10 can be improved. Especially, when the cover plate 20, the partition plate 30 and the cabinet 10 are welded, the stability can be improved.

At least a part of the downward projection of the outer peripheral surface of the peripheral wall of the cover plate 20 is positioned inside the outer peripheral surface of the upper end of the peripheral wall of the casing 10, so that the interference or shielding between the peripheral wall of the cover plate 20 and the casing 10 on the outer peripheral surface of the casing does not occur, and the welding and assembly of the casing are facilitated. In addition, generally, the cover plate 20 is covered above the casing 10, and the outer diameter of the cover plate 20 is smaller than that of the casing 10, so that vertical welding is facilitated, the limitation on the assembly space is small, and the compatibility of diversified production lines of the compressor 100 is facilitated to be improved.

According to the utility model discloses the casing of compressor, through with division board 30 and apron 20 and the range upon range of arrangement of casing 10, and the upper end of casing 10 has the clearance with the lower extreme of apron 20 in order to expose division board 30's outer peripheral face, can improve the structural stability of casing, and be convenient for equipment and welding.

With reference to fig. 2 and 3, in some embodiments of the present invention, the outer peripheral surface of the partition plate 30 includes a first surface 31, a first step surface 34 and a second surface 32, the first step surface 34 is connected between the first surface 31 and the second surface 32, a downward projection of the first surface 31 is located inside the second surface 32, a lower end of the peripheral wall of the cover plate 20 is stacked outside the first surface 31, and an upper end of the peripheral wall of the casing 10 is stacked outside the second surface 32. In other words, the first step surface 34 is adapted to support the lower end of the cover plate 20, and the first surface portion 31 is adapted to be engaged with the peripheral wall of the cover plate 20, so as to increase the contact area between the cover plate 20 and the partition plate 30 and improve the engagement stability; and the second surface 32 is laminated with the upper end of the peripheral wall of the casing 10, so that the matching effect of the casing 10 and the partition plate 30 can be improved. Specifically, a first step surface 34 is configured between the first face 31 and the second face 32, the first step surface 34 is used for overlapping or supporting the lower end of the cover plate 20, and the first face 31 and the second face 32 are used for being stacked with the cover plate 20 and the cabinet 10 to improve structural stability.

In some embodiments of the present invention, the width of the first step surface 34 may not be smaller than the width of the lower circumferential surface of the cover plate 20, and the supporting effect and the welding strength may be improved.

Referring to fig. 2, in some embodiments of the present invention, the first step surface 34 is higher than the upper end of the peripheral wall of the casing 10, so that the casing 10 can be prevented from shielding the partition plate 30, and the assembling effect can be improved. The lower end of the peripheral wall of the cover plate 20 is supported on the first step surface 34. Specifically, the lower end of the peripheral wall of the cover plate 20 is supported on the first step surface 34, and the first step surface 34 is higher than the upper end of the peripheral wall of the casing 10, so that the cover plate 20, the partition plate 30 and the casing 10 are sequentially arranged around the first step surface 34 along the up-down direction, which facilitates welding the partition plate 30, the cover plate 20 and the casing 10 together, and is beneficial to improving the structural stability.

With reference to fig. 1 and 2, in some embodiments of the present invention, the peripheral wall of the casing 10 includes a cylindrical portion 11 and an upper end portion 13, the upper end portion 13 is connected to the upper end of the cylindrical portion 11 and is outwardly expanded relative to the cylindrical portion 11, a second step surface 12 is formed between the inner peripheral surface of the upper end portion 13 and the inner peripheral surface of the cylindrical portion 11, and the partition plate 30 is supported on the second step surface 12, so that the stability of the fitting of the casing 10 and the partition plate 30 can be improved. That is, by forming the upper end portion 13 on the upper end of the cylindrical portion 11 so as to be outwardly enlarged with respect to the cylindrical portion 11, a stepped surface adapted to support or overlap the partition plate 30 can be formed between the cylindrical portion 11 and the upper end portion 13, and the inner peripheral wall of the upper end surface can be laminated or bonded to the outer peripheral wall of the partition plate 30 or the second surface portion 32, which contributes to an increase in fitting area and can further improve fitting stability.

Referring to fig. 2, in some embodiments of the present invention, at least a portion of the upper end portion 13 is configured to be gradually flared from bottom to top, facilitating manufacturing and assembly.

The outer peripheral surface of the upper end portion 13 may extend straight in the vertical direction, or the outer peripheral surface of the upper end portion 13 may be configured to be adapted to be in contact with the outer peripheral wall of the partition plate 30, so as to improve structural stability.

With reference to fig. 2, in some embodiments of the present invention, the outer peripheral surface of the partition plate 30 may further include a third surface portion 33 (or a positioning surface), the third surface portion 33 is connected to the second surface portion 32, the third surface portion 33 is supported on the second step surface 12, and the distance between the third surface portion 33 and the first step surface 34 is greater than or equal to 5mm, so as to avoid the influence of the thermal deformation of the third surface portion 33 during welding on the overlapping or supporting effect of the third surface portion 33 and the second step surface 12.

The utility model discloses an in some embodiments, the up end of upper end 13 is parallel with second step face 12 to all perpendicular with the axis of casing 10, can improve structural stability, do benefit to and improve the supporting effect that second step face 12 divides partition plate 30, and do benefit to and improve the welding effect.

Referring to fig. 2, in some embodiments of the present invention, the upper end of the peripheral wall of the casing 10 has a gap with the outer peripheral surface of the partition plate 30, and the upper end of the gap is open, which may facilitate assembly and welding. For example, the inner side peripheral wall of the upper end portion 13 may be an arc shape gradually expanding outward, which is beneficial to improving the structural stability, and a gap is provided between the outer peripheral wall of the partition plate 30 or the inner side wall of the second face portion 32 and the upper end portion 13, during assembly, the melted material during welding can enter the gap, and cannot overflow, which is beneficial to improving the welding effect and the aesthetic property.

Referring to fig. 2, in some embodiments of the present invention, a gap between the upper end of the peripheral wall of the casing 10 and the lower end of the peripheral wall of the cover plate 20 is greater than or equal to 0.5 mm and less than or equal to 2.5mm in the vertical direction. For example, the gap between the upper end of the peripheral wall of the casing 10 and the lower end of the peripheral wall of the cover plate 20 may be 0.64 mm or 0.8 mm, and the gap between the upper end of the peripheral wall of the casing 10 and the lower end of the peripheral wall of the cover plate 20 may be set to be smaller than 0.5 mm or larger than 2.5mm, such as 1 mm or 3 mm, according to the actual situation, but the present invention is not limited thereto.

With reference to fig. 2, in some embodiments of the present invention, the outer side of the lower end of the peripheral wall of the cover plate 20 has a chamfer structure to construct an inclined plane gradually shrinking from top to bottom on the outer peripheral surface of the lower end of the peripheral wall of the cover plate 20, so as to provide a space for assembly, facilitate welding operation, reduce the occupied space of the production line, and facilitate miniaturization of the production line.

The utility model discloses an in some embodiments, the inclined plane is not more than 30 for the inclination of apron 20 axis, provides operating space for the vertical position welds, improves the compatibility of producing the line.

According to the utility model discloses compressor 100, including the casing of aforementioned compressor, through using aforementioned casing on compressor 100, can improve compressor 100's structural stability, and do benefit to the assembly, do benefit to and reduce the assembly space.

According to the utility model discloses compressor 100, including first vortex dish, second vortex dish and aforementioned casing, compressor 100 carries out the cyclotron motion through the rotation of pivot, and the second vortex dish sets up in one side of first vortex dish, and division board 30 is located second vortex dish top, and casing 10 is located the second vortex dish outside, and apron 20 is located division board 30 top. The upper part of the casing 10 has an upper end 13, the upper end face of the upper end 13 is parallel to the second stepped surface 12, and the second stepped surface 12 of the casing 10 is overlapped with the partition plate 30 while radially restraining the partition plate 30. The lower end surface of the partition plate 30 has a positioning function (i.e., the third surface portion 33), the first step surface 34 of the partition plate 30 is higher than the upper end surface of the casing 10, the lower end surface of the cover plate 20 is overlapped with the first step surface 34 of the partition plate 30, and the outer diameter of the cover plate 20 is smaller than that of the upper end surface of the casing 10, which is beneficial to welding and assembling the compressor 100.

According to the utility model discloses a compressor 100 sets up upper end 13 through casing 10 upper portion, makes the location (support) face of division board 30 separate with the weld part, can guarantee compressor 100's assembly precision. In addition, the shell of the compressor is suitable for vertical welding, the welding quality can be guaranteed, the occupied space is small, and the miniaturization and the generalization of production equipment of the scroll compressor 100 are facilitated.

According to the utility model discloses warm equipment of ventilating, including aforementioned compressor 100, through using aforementioned compressor 100 on warm equipment of ventilating, do benefit to the manufacturing cost who reduces warm equipment of ventilating.

A housing of a compressor and a compressor 100 having the same according to an embodiment of the present invention will be described with reference to the accompanying drawings.

The scroll compressor 100 uses the compressor 100 having an orbiting scroll of a spiral wrap and a fixed scroll of a spiral wrap, the orbiting scroll performing an orbiting motion with respect to the fixed scroll, and when the orbiting scroll and the fixed scroll are engaged with each other, as the orbiting scroll performs the orbiting motion, a capacity of a pressure chamber formed between the orbiting scroll and the fixed scroll is reduced. Accordingly, the pressure of the fluid in the pressure chamber may be increased, and the fluid is discharged from the discharge port 101 formed at the central portion of the fixed scroll. The fixed scroll is formed with a back pressure regulation chamber having an intermediate pressure between a discharge pressure and a suction pressure, and the back pressure chamber may be formed with an upper end surface of the fixed scroll. That is, by forming the back pressure adjusting chamber, the orbiting scroll and the fixed scroll can be contacted with each other with an appropriate force, leakage of refrigerant can be prevented and lubrication can be increased, while the contact force can be adjusted, friction of contact can be reduced, but the sealing force is not lowered. The partition plate 30 of the low pressure chamber scroll compressor 100 is located above the stationary disc, and may perform a sealing function.

Combine fig. 4, among the correlation technique, set up boss 1' on the periphery wall of division board, about boss 1' width 2.5mm, through boss 1' lower terminal surface and inferior valve 3' up end overlap joint, location, boss 1' up end overlap joint upper cover 2', because upper cover 2' external diameter is greater than inferior valve 3' external diameter, can't realize vertical welding, be unfavorable for producing the compatibility of line, the majority is through horizontal welding reply, horizontal welding equipment occupation space is big, be unfavorable for producing the miniaturization of line. In addition, the distance of the boss 1' is short, and the boss is easily deformed by heat fusion during welding, thereby reducing structural stability.

The compressor 100 according to the embodiment of the present invention includes a movable scroll, a fixed scroll, and a housing, wherein the movable scroll has a base plate and a scroll wrap connected to the base plate; the fixed scroll and the orbiting scroll together form a suction chamber, an intermediate pressure chamber, and a discharge chamber.

Specifically, the housing includes a housing 10, a cover plate 20, and a partition plate 30, the housing 10 includes a cylindrical portion 11 and an upper end portion 13 and is outwardly expanded with respect to the cylindrical portion 11, the upper end portion 13 is connected to an upper end of the cylindrical portion 11, and a second step surface 12 is configured between an inner circumferential surface of the upper end portion 13 and an inner circumferential surface of the cylindrical portion 11. The partition plate 30 includes a first surface 31, a first step surface 34, a second surface 32, and a third surface 33 connected in this order, the third surface 33 is supported on the second step surface 12, the second surface 32 faces the inner peripheral surface of the upper end 13, the lower end of the cover plate 20 is supported on the first step surface 34, and the inner peripheral surface of the lower end of the cover plate 20 faces the first surface 31. The outer side of the lower end of the peripheral wall of the cover plate 20 has a slope inclined at 30 ° from top to bottom.

It can be seen that in the related art, the welding of the low pressure chamber partition plate, the upper cover 2 'and the lower case 3' to the three parts is performed only by horizontal welding. And the utility model discloses the casing of compressor is through setting up upper end 13 in casing 10 upper end, and it is regional to form the step through upper end 13 and section of thick bamboo 11, utilizes the welding angle to arrange and welding quality assurance, and the increase of the distance of division board 30 locating surface (third face 33 promptly) and apron 20 holding surface has simultaneously guaranteed that welding process does not influence division board 30's plane degree and parallelism, has reached compressor 100's high accuracy assembly, solves the problem that vertical welding can not use.

Furthermore, the utility model discloses in through set up upper end 13 on casing 10, can also reduce the influence of division board 30 welding to the locating surface, the precision of the compressor 100 of being convenient for is guaranteed, simultaneously through the stack of the three part of apron 20 special inclination, division board 30 distance increase and casing 10 upper end 13, has realized vertical welded function, can not bring extra processing cost and assembly cost, the compatibility of the diversified line of producing of favourable compressor 100.

In the description of the present invention, it is to be understood that the terms "width", "upper", "lower", "front", "rear", "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 simplicity of 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 construed as limiting 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (13)

1. A shell of a compressor is characterized by comprising a shell, a partition plate and a cover plate, wherein the partition plate covers an opening at the upper end of the shell, the cover plate covers the outer side of the partition plate, the upper end of the peripheral wall of the shell is laminated on the outer side of the outer peripheral surface of the partition plate, the lower end of the peripheral wall of the cover plate is laminated on the outer side of the outer peripheral surface of the partition plate, a gap is formed between the upper end of the shell and the lower end of the cover plate to enable the outer peripheral surface of the partition plate to leak out, and at least part of the downward projection of the outer peripheral surface of the peripheral wall of the cover plate is positioned on the inner side of the outer peripheral surface of the upper end of the peripheral wall of the shell.

2. The compressor casing according to claim 1, wherein the outer peripheral surface of the partition plate includes a first surface portion, a first step surface, and a second surface portion, the first step surface is connected between the first surface portion and the second surface portion, a downward projection of the first surface portion is located inside the second surface portion, a lower end of a peripheral wall of the cover plate is laminated outside the first surface portion, and an upper end of the peripheral wall of the casing is laminated outside the second surface portion.

3. The compressor shell according to claim 2, wherein the first step surface is higher than an upper end of a circumferential wall of the casing.

4. The compressor housing as claimed in claim 2, wherein a lower end of a circumferential wall of the cover plate is supported on the first step surface.

5. The compressor casing according to claim 1, wherein the peripheral wall of the casing includes a cylindrical portion and an upper end portion, the upper end portion is connected to an upper end of the cylindrical portion and is flared with respect to the cylindrical portion, and a second step surface is formed between an inner peripheral surface of the upper end portion and the inner peripheral surface of the cylindrical portion, and the partition plate is supported on the second step surface.

6. The compressor housing as claimed in claim 5, wherein at least a portion of the upper end portion is configured in a shape gradually expanding outward from bottom to top.

7. The compressor housing as claimed in claim 5, wherein the upper end surfaces of the upper end portions are parallel to the second step surface and are perpendicular to the axis of the shell.

8. The compressor casing according to any one of claims 1 to 6, wherein a gap is provided between an upper end of the peripheral wall of the casing and an outer peripheral surface of the partition plate, and an upper end of the gap is open.

9. The compressor casing according to any one of claims 1 to 6, wherein a gap of 0.5 mm or more and 2.5mm or less is provided between an upper end of a peripheral wall of the casing and a lower end of a peripheral wall of the cover plate in an up-down direction.

10. The compressor casing according to any one of claims 1 to 6, wherein the outer side of the lower end of the circumferential wall of the cover plate has a chamfered structure to form a slope gradually receding inward from the top to the bottom on the outer circumferential surface of the lower end of the circumferential wall of the cover plate.

11. The compressor housing of claim 10 wherein the angle of inclination of the ramp to the cover plate axis is no greater than 30 °.

12. A compressor, characterized by comprising a shell of a compressor according to any one of claims 1 to 11.

13. Heating and ventilation equipment, characterized in that it comprises a compressor according to claim 12.

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