Patent Description:
In most of the current compressors, the length of the oil tubing installed on the housing is short, or when the oil tubing is installed to the housing from the inside of the housing, the existing oil tubing with short length is difficult to meet the functional requirements of both maintaining a low oil circulation rate and drawing excess oil away from the housing. Therefore, it is desirable to use an oil tubing with longer length in the compressor. However, it is difficult for the existing assembling tools to meet the assembling requirements of the new type compressors with a longer oil tubing.

<FIG> is a perspective view of a state prior to assembling a housing with an oil tubing into a mid-shell of a compressor in the prior art, <FIG> is a partially cutaway side view of the state shown in <FIG>, <FIG> is a perspective view of a state after assembling a housing with an oil tubing into a mid-shell of a compressor in the prior art, and <FIG> is a partially cutaway side view of the state shown in <FIG>.

Specifically, on one hand, as shown in <FIG> , in order to assemble the housing <NUM> with the oil tubing <NUM> into the mid-shell <NUM> of the compressor <NUM>, it is necessary to use an assembling tool (not shown in the drawings) to raise the housing <NUM> to a certain height (H) so that the lower end of the oil tubing <NUM> can be placed into the mid-shell <NUM>, and then the housing <NUM> with the oil tubing <NUM> can be assembled into the mid-shell <NUM> in the vertically downward direction R. In this case, in order to assemble the housing <NUM> with a longer oil tubing into the mid-shell <NUM>, it is necessary to increase the stroke of the assembling tool to increase the height to which the housing <NUM> is raised. However, in the prior art, due to the limitation of the structural size of the assembling tool itself, the height to which the housing <NUM> is raised is limited.

On the other hand, if the oil tubing <NUM> is assembled separately after the housing <NUM> has been installed into the mid-shell <NUM>, it is difficult to assemble the oil tubing <NUM> to the housing <NUM> in the mid-shell <NUM> since the residual space (D) between the housing <NUM> and the mid-shell <NUM> is too small.

<CIT> describes a scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. An oil return tube delivers oil from an upper region of the housing to an oil sump in a lower region of the housing.

<CIT> describes a refrigerant compressor.

<CIT> describes a compressor that is equipped with a casing, a compression mechanism, a drive shaft, a main frame, a motor, a flow path forming member and temperature sensing member.

The disclosure is made in order to solve the problem that the oil tubing is difficult to be installed into the mid-shell of the compressor together with the housing due to its too long length, and other potential technical problems.

According to the present invention, there is provided a scroll compressor according to the subject-matter of claim <NUM>.

Specifically, the clip is configured to have a horizontal bottom plate and first elastic tongues extending upward from the front edge of the bottom plate. The first elastic tongues are configured to be in contact with the front surface of the installation block and apply pressure to the front surface of the installation block, so that the rear surface of the installation block is abutted on the oil tubing installation surface and the second orifice is tightly fitted to the oil hole after the installation block is installed in place in the clip.

Preferably, the upper ends of the first elastic tongues are bent to the outside and able to abut against the inner wall of the shell.

Preferably, grooves are provided on the front surface of the installation block. The first elastic tongues can be embedded into the corresponding grooves after the installation block is installed in place in the clip.

Optionally, the clip is configured to have second tongues extending upward respectively from the left and right edges of the bottom plate. The second tongues are configured to be respectively in contact with and apply pressure to the left and right sides of the installation block to inhibit the movement of the installation block in the left-right direction.

Preferably, the upper ends of the second tongues are bent to the outside.

Specifically, threaded holes are provided on the oil tubing installation surface. The clip is configured to also have third tongues. Each of the third tongues respectively extends to the left and right sides from the vertical edge of the two vertical edges of the corresponding one of the second tongues which is closer to the oil tubing installation surface. Through holes are provided in the third tongues. The through holes in the third tongues are aligned with the threaded holes on the oil tubing installation surface after the clip is installed in place on the oil tubing installation surface so as to fasten the clip to the housing with screws going through the through holes in the third tongues and the threaded holes on the oil tubing installation surface.

Specifically, the housing is configured to have an outer peripheral surface, the oil tubing installation surface is located on the outer peripheral surface and is radially inwardly offset relative to the outer peripheral surface, so as to form a first stepped surface at the junction of the outer peripheral surface and the oil tubing installation surface. A lower bottom surface is provided below the oil tubing installation surface. The lower bottom surface is adjacent to and perpendicular to the oil tubing installation surface. The rear surface of the installation block comprises an upper rear surface and a lower rear surface. The second orifice is located in the lower rear surface. A second stepped surface is formed at the junction of the upper rear surface and the lower rear surface. The installation block further comprises a bottom surface. The bottom plate of the clip is inserted under the lower bottom surface and abutted on the lower bottom surface and the bottom surface of the installation block abuts on the bottom plate of the clip after the clip is installed in place on the oil tubing installation surface and the installation block is installed in place in the clip. The distance from the center of the oil hole to the lower bottom surface is equal to the distance from the center of the second orifice to the bottom surface of the installation block, and the distance from the center of the oil hole to the first stepped surface is greater than or equal to the distance from the center of the second orifice to the second stepped surface.

Optionally, a flange is provided on the second orifice. The flange of the second orifice is embedded tightly into the oil hole when the second orifice is aligned with and fitted to the oil hole. Specifically, the distance between the second tongue on the left side and the second tongue on the right side is equal to the dimension of the installation block in the left-right direction, and is smaller than or equal to the dimension of the first stepped surface in the left-right direction. According to another aspect of the present disclosure, a scroll compressor is provided. The scroll compressor comprises a shell and an oil tubing installation assembly according to the preceding aspects. The oil tubing installation assembly is adapted to be installed into the shell in a vertical direction.

The long oil tubing can be more easily installed into a mid-shell of a compressor on a production line of the compressor and is not limited by the existing assembling tools by adopting the oil tubing installation assembly of the present disclosure. In this way, it is possible to efficiently manufacture a compressor, particularly a scroll compressor, which meets the functional requirements of maintaining a low oil circulation rate and drawing excess oil away from a housing.

In order to facilitate understanding of the present disclosure, the present disclosure is hereinafter described in more detail based on exemplary embodiments and in conjunction with the accompanying drawings. The same or similar reference numbers are used in the accompanying drawings to refer to the same or similar components. It should be understood that the accompanying drawings are schematic only and that the dimensions and proportions of components in the accompanying drawings are not necessarily precise.

Hereinafter, the present disclosure is described in detail with reference to the accompanying drawings.

<FIG> is a perspective view of a housing according to an exemplary embodiment of the present disclosure.

As shown in <FIG>, the housing <NUM> has an outer peripheral surface <NUM>. The vertical oil tubing installation surface <NUM> is located on the outer peripheral surface <NUM> and is radially inwardly offset relative to the outer peripheral surface <NUM>, so as to form a stepped surface <NUM> at the junction of the outer peripheral surface <NUM> and the oil tubing installation surface102. A lower bottom surface <NUM> is provided below the oil tubing installation surface <NUM>. The lower bottom surface <NUM> is adjacent to and perpendicular to the oil tubing installation surface <NUM>. An oil hole <NUM> and two threaded holes <NUM>, <NUM>' are opened in the oil tubing installation surface <NUM>. The distance from the center of the oil hole <NUM> to the lower bottom surface <NUM> is h1, and the distance from the center of the oil hole to the stepped surface <NUM> is h2. The dimension of the stepped surface <NUM> in the left-right direction is L1.

<FIG> are respectively a perspective view and a side view of a clip according to an exemplary embodiment of the present disclosure. The clip <NUM> is adapted to be installed on the oil tubing installation surface <NUM> and into the mid-shell <NUM> along with the housing <NUM>. As shown in <FIG>, the clip <NUM> is configured to have a horizontal bottom plate <NUM> and first elastic tongues <NUM>, <NUM>' extending upward from the front edge of the bottom plate <NUM>. As will be described later, the first elastic tongues <NUM>, <NUM>' are configured to be in contact with the front surface <NUM> of the installation block <NUM> and apply pressure to the front surface <NUM> of the installation block <NUM>, so that the rear surface <NUM> of the installation block <NUM> is abutted on the oil tubing installation surface <NUM> and the second orifice <NUM> is tightly fitted to the oil hole <NUM> after the installation block <NUM> is installed in place in the clip <NUM>. It should be understood that, although the number of the first elastic tongues shown in <FIG> is two, in practice the number of the first elastic tongues may be less or more than two.

Taking the first elastic tongue <NUM> as an example, the upper end <NUM> of the first elastic tongue <NUM> is bent to the outside and can abut against the inner wall of the mid-shell <NUM>. The lower end <NUM> of the first elastic tongue <NUM> is arc-shaped, so that the elasticity of the first elastic tongue <NUM> can be increased. The upper end <NUM> of the first elastic tongue <NUM> and the lower end <NUM> of the first elastic tongue <NUM> are connected by a straight middle section. A turning area s is formed at the junction of the upper end <NUM> of the first elastic tongue <NUM> and the middle section. As will be described later, the first elastic tongue <NUM> (specifically, the turning area s) can be embedded in the corresponding groove <NUM> of the installation block <NUM> after the installation block <NUM> is installed in place in the clip <NUM>, so as to exert pressure to the front surface <NUM> of the installation block <NUM> and have a certain limiting effect on the installation block <NUM>. The structure of the first elastic tongue is described above by taking the first elastic tongue <NUM> as an example. The structure of the other first elastic tongue <NUM>' is the same with that of the first elastic tongue <NUM>, so its structure is not repeated here, but only a corner mark' is added to the upper right corner of the corresponding reference number in the accompanying drawings to distinguish it from the corresponding structure of the first elastic tongue piece <NUM>.

The clip <NUM> is configured to have second tongues <NUM>, <NUM>' extending upward respectively from the left and right edges of the bottom plate. As will be described hereinafter, the second tongues <NUM>, <NUM>' are configured to be respectively in contact with and apply pressure to the left side <NUM> and the right side <NUM>' of the installation block <NUM> to inhibit the movement of the installation block <NUM> in the left-right direction. The distance between the second tongues <NUM> and <NUM>' is L2. Preferably, the upper end <NUM> (<NUM>') of the second tongue <NUM> (<NUM>') is bent to the outside so as to receive the installation block <NUM>.

The clip <NUM> is configured to also have two third tongues <NUM>, <NUM>'. The third tongue <NUM> extends to the left side from the vertical edge of the two vertical edges of the second tongue <NUM> that is closer to the oil tubing installation surface <NUM>, and the third tongue <NUM>' extends to the right side from the vertical edge of the two vertical edges of the second tongue <NUM>' that is closer to the oil tubing installation surface <NUM>. Through holes <NUM>, <NUM>' are opened in the third tongues <NUM>, <NUM>'. It should be understood that, although the number of the through holes <NUM>, <NUM>' shown in <FIG> is two, in practice the number of the through holes may be less or more than two.

The through holes <NUM>, <NUM>' in the third tongues <NUM>, <NUM>' are aligned with the threaded holes <NUM>, <NUM>' on the oil tubing installation surface <NUM> after the clip <NUM> is installed in place on the oil tubing installation surface <NUM> so as to fasten the clip <NUM> to the housing <NUM> with screws going through the through holes <NUM>, <NUM>' in the third tongues <NUM>, <NUM>' and the threaded holes <NUM>, <NUM>' on the oil tubing installation surface <NUM>. The bottom plate <NUM> of the clip <NUM> is inserted under the lower bottom surface <NUM> of the housing <NUM> and abutted on the lower bottom surface <NUM> after the clip <NUM> is installed in place on the oil tubing installation surface <NUM>.

<FIG> are perspective views of an oil tubing assembly according to an exemplary embodiment of the present disclosure. The oil tubing assembly is adapted to be installed into the clip <NUM> in a vertically downward direction R after the housing <NUM> and the clip <NUM> have been installed into the mid-shell <NUM>.

As shown in <FIG>, the oil tubing assembly comprises an oil tubing body <NUM> and an overall cuboid-shaped installation block <NUM>. A through hole <NUM> is provided in the installation block <NUM>. The through hole <NUM> is configured to have a first orifice on the front surface <NUM> of the installation block <NUM> and a second orifice on the rear surface <NUM> of the installation block. The upper end of the oil tubing body <NUM> is connected to the first orifice. The second orifice is aligned with and fitted to the oil hole <NUM> after the installation block <NUM> is installed in place in the clip <NUM>. Preferably, a flange <NUM> is provided on the second orifice. In this way, the flange <NUM> can be embedded tightly into the oil hole <NUM> when the second orifice is aligned with and fitted to the oil hole <NUM>.

Specifically, grooves <NUM>, <NUM>' are provided on the front surface <NUM> of the installation block <NUM>. After the installation block <NUM> is installed in place in the clip <NUM>, the first elastic tongue <NUM> (especially the turning area s) can be embedded into the groove <NUM>, and the first elastic tongue <NUM>' (especially the turning area s') can be embedded into the groove <NUM>'. The rear surface <NUM> of the installation block comprises an upper rear surface <NUM> and a lower rear surface <NUM>. The second orifice is located in the lower rear surface <NUM>. A stepped surface <NUM> is formed at the junction of the upper rear surface <NUM> and the lower rear surface <NUM>.

Installation block <NUM> also comprises a bottom surface <NUM> and a top surface <NUM>. A chamfered face w1 is formed at the junction of the bottom surface <NUM> and the front surface <NUM>. Chamfered faces w2 and w2' are formed respectively at the junctions of the bottom surface <NUM> and the left side surface <NUM> and the right side surface <NUM>' of the installation block <NUM>. In addition, the distance from the center of the second orifice to the bottom surface <NUM> is h3, and the distance from the center of the second orifice to the stepped surface <NUM> is h4.

The bottom plate <NUM> of the clip <NUM> is abutted on the lower bottom surface <NUM> of the housing <NUM> after the clip <NUM> is installed in place on the oil tubing installation surface <NUM> and the installation block <NUM> is installed in place in the clip <NUM>. Preferably, h1=h3, and h2≥h4.

The dimension of the installation block in the left-right direction is L3. Preferably, L3=L2≤L1.

<FIG> is a schematic diagram of a state in the process of installing the oil tubing assembly shown in <FIG> to the clip shown in <FIG>. <FIG> is a perspective view of a state prior to assembling an oil tubing assembly into a mid-shell of a compressor according to an exemplary embodiment of the present disclosure. <FIG> is a partially cutaway side view of a state prior to assembling an oil tubing assembly into a mid-shell of a compressor according to an exemplary embodiment of the present disclosure. <FIG> is a perspective view of a state after assembling an oil tubing assembly into a mid-shell of the compressor according to an exemplary embodiment of the present disclosure. <FIG> is a partially cutaway side view of the state shown in <FIG>.

As shown in <FIG>, the clip <NUM> may be pre-fixed to the housing <NUM> and then installed into the mid-shell <NUM> together with the housing <NUM>. Then, the oil tubing assembly (i.e., the installation block <NUM> with the oil tubing <NUM>) is pressed into the clip <NUM> in the vertically downward direction R. Specifically, as the oil tubing assembly continues to move downward in the vertically downward direction R, the chamfered face w1 comes in contact with the upper ends <NUM>, <NUM>' of the first elastic tongues <NUM>, <NUM>', and the chamfered faces w2, w2' comes in contact with the upper ends <NUM>, <NUM>' of the second tongues <NUM>, <NUM>', respectively. As the oil tubing assembly moves further downward, the first elastic tongues <NUM>, <NUM>' (especially the turning areas s, s') are embedded in the corresponding grooves <NUM>, <NUM>' of the installation block <NUM>, respectively.

Claim 1:
A scroll compressor,
the scroll compressor comprising:
a shell (<NUM>),
a housing (<NUM>) and
an oil tubing installation assembly installed into the shell (<NUM>) in a vertical direction, wherein
the oil tubing installation assembly comprising:
a vertical oil tubing installation surface (<NUM>) and an oil hole (<NUM>) located in the oil tubing installation surface being provided on the housing (<NUM>);
characterized by the oil tubing installation assembly comprising:
a clip (<NUM>) adapted to be installed on the oil tubing installation surface and into the shell along with the housing; and
an oil tubing assembly adapted to be installed into the clip in a vertical direction after the housing and the clip have been installed into the shell,
wherein the oil tubing assembly comprises an oil tubing body (<NUM>) and an overall cuboid-shaped installation block (<NUM>) in which a through hole (<NUM>) is provided, the through hole is configured to have a first orifice on the front surface (<NUM>) of the installation block and a second orifice on the rear surface (<NUM>) of the installation block, and the upper end of the oil tubing body is connected to the first orifice, and
wherein the second orifice is aligned with and fitted to the oil hole after the installation block is installed in place in the clip.