Compressors and refrigerators

Abstract

To provide compressors and refrigerators that reduce manufacturing costs. [Solution] A compressor having a lubrication mechanism 100 for supplying lubricating oil to a sliding part, wherein the lubrication mechanism 100 is composed of a lubrication member 120 and a housing member 110, and the lubrication member 120 and the housing member 110 are provided with a mechanism to prevent the lubrication member 120 from falling out of the housing member 110.

Description

Technical Field

[0001] The present invention relates to a compressor and a refrigerator that are easy to manufacture.

Background Art

[0002] In retail stores such as supermarkets and convenience stores, refrigerators for displaying refrigerated or frozen products are widely used.

[0003] Since such a refrigerator is preferably small from the viewpoint of securing display space, a horizontal scroll compressor is often used to reduce the size.

[0004] In a scroll compressor, lubricating oil is circulated inside to stabilize the sliding operation of the scroll portion. Here, the lubricating oil is stored in the sealed container of the compressor, sucked up by the negative pressure generated as the scroll components are driven, and supplied to the scroll components.

[0005] By the way, the cap connected to the pipe for sucking up the lubricating oil of the compressor is generally made of a metal member and is fitted to the inner peripheral surface of the end portion of the bearing in a fitting structure. For example, Japanese Patent Application Laid-Open No. 2013-87694 (Patent Document 1) discloses a structure in which the end portion of the sub-bearing on the side of the counter-motor portion has a fitting structure, and a bag-shaped cover is fitted to the inner peripheral surface. According to Patent Document 1, a sealed space is formed by the cover, the sub-bearing, and the rotating shaft portion, and thus lubricating oil can be supplied.

[0006] However, in the prior art including Patent Document 1, since the cap and the pipe are made of metal members, welding work must be performed, and the manufacturing cost is high. In addition, in order to form a sealed space, it is necessary to perform a complicated process of welding and fixing while crushing a sealing member such as a gasket between the cap and the end portion of the sub-bearing, which has been a factor increasing the cost and labor.

[0007] Therefore, there was a need for further technologies to reduce the costs associated with manufacturing the lubrication mechanism in compressors used in refrigeration systems and the like. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2013-87694 [Overview of the project] [Problems that the invention aims to solve]

[0009] This invention has been made in view of the problems of the prior art described above, and aims to provide a compressor and a refrigerator that reduce manufacturing costs. [Means for solving the problem]

[0010] In other words, according to the present invention, A compressor having a lubrication mechanism that supplies lubricating oil to the sliding parts, The aforementioned lubrication mechanism is configured to include a lubrication member and a housing member, The oil supply member and the housing member are equipped with a mechanism to prevent the oil supply member from falling out of the housing member. A compressor will be provided. [Effects of the Invention]

[0011] According to the present invention, compressors and refrigerators with reduced manufacturing costs can be provided. [Brief explanation of the drawing]

[0012] [Figure 1] A cross-sectional view showing the structure of a conventional horizontal scroll compressor. [Figure 2] A cross-sectional view showing the structure of the lubrication mechanism of a conventional horizontal scroll compressor. [Figure 3] A cross-sectional view showing the structure of a conventional lubrication component. [Figure 4] Cross-sectional view showing the structure of the oil supply mechanism of the horizontal scroll compressor in this embodiment. [Figure 5] Diagram showing the structure of the oil supply member in the first example of this embodiment. [Figure 6] Diagram showing the structure of the housing member in the first example of this embodiment. [Figure 7] Diagram showing an example in which the housing member and the oil supply member are assembled in the first example of this embodiment. [Figure 8] Diagram showing the structure of the oil supply member in the second example of this embodiment. [Figure 9] Diagram showing the structure of the housing member in the second example of this embodiment. [Figure 10] Diagram showing the structure of the oil supply mechanism in which the housing member and the oil supply member are assembled in the second example of this embodiment.

Mode for Carrying Out the Invention

[0013] Hereinafter, the present invention will be described with reference to embodiments, but the present invention is not limited to the embodiments described below. In each of the figures referred to below, the same reference numerals are used for common elements, and the description thereof will be omitted as appropriate.

[0014] Further, hereinafter, in order to describe the embodiments of the present invention, as basic premise matters, the oil supply mechanism 100' of the compressor in the prior art will be described with reference to FIGS. 1 to 3.

[0015] FIG. 1 is a cross-sectional view showing the structure of a horizontal scroll compressor 1 in the prior art. The horizontal scroll compressor 1 is roughly composed of an oil storage chamber 10, a motor chamber 20, and a pump chamber 30.

[0016] Lubricating oil is stored in the oil storage chamber 10 and supplied to the sliding portion of the pump chamber 30 by the oil supply member 150. Further, a discharge pipe 11 is provided in the oil storage chamber 10 to discharge air to the outside of the compressor. A motor 21 is stored in the motor chamber 20.

[0017] The pump chamber 30 stores a revolving scroll 32 and a fixed scroll 33 inside the high-pressure chamber 31. When the revolving scroll 32 is driven, air is inhaled from the suction pipe 34. Then, it is discharged from the discharge pipe 11 as compressed air.

[0018] Note that the area indicated by the dashed line in FIG. 1 shows the part related to the mechanism for supplying lubricating oil. Hereinafter, the oil supply mechanism 100' will be described in FIG. 2.

[0019] FIG. 2 is a cross-sectional view showing the structure of an oil supply mechanism 100' of a horizontal scroll compressor in the prior art. It should be noted that the cross-sectional view shown in FIG. 2 is an enlarged view of the part related to the oil supply mechanism 100' (the area indicated by the dashed line in FIG. 1), and other components are appropriately omitted.

[0020] As shown in FIG. 2, the oil supply mechanism 100' in the prior art is configured by fitting an oil supply member 150 into a housing member 110. A seal member 160 such as a gasket is inserted between the oil supply member 150 and the housing member 110 to maintain sealing.

[0021] Therefore, when the scroll mechanism of the compressor is driven to generate a negative pressure, the lubricating oil stored in the compressor is sucked up by the oil supply member 150 and supplied to the sliding part. The arrows in FIG. 2 indicate the flow of the lubricating oil.

[0022] Next, the structure of the oil supply member 150 shown in FIG. 2 will be described. FIG. 3 is a cross-sectional view showing the structure of the oil supply member 150 in the prior art. The oil supply member 150 in the prior art is configured by connecting a cap member 151 and a pipe member 152 as shown in FIG. 3.

[0023] Conventionally, the lubrication member 150, as shown in Figure 3, was made of metal. Therefore, in order to manufacture the lubrication member 150, it was necessary to weld a metal cap member 151 and a metal pipe member 152. This was a factor that increased the cost of manufacturing a compressor with a lubrication mechanism.

[0024] Similarly, the sealing component 160 is also made up of gaskets and the like, which increased the effort and cost involved in its manufacture.

[0025] Furthermore, when attaching the lubrication member 150 to the housing member 110, it was necessary to press the lubrication member 150 against the housing member 110 using a special jig and then weld it in place, which was also a time-consuming process.

[0026] Therefore, in this embodiment, the lubrication member is made of a material with relatively high elasticity, thereby reducing the effort and cost required to manufacture the compressor. The lubrication mechanism 100 in this embodiment will be described in detail below.

[0027] Figure 4 is a cross-sectional view showing the structure of the lubrication mechanism 100 of the horizontal scroll compressor in this embodiment. Note that the cross-sectional view shown in Figure 4, like Figure 2, is an enlarged view of the part related to the lubrication mechanism 100 of the compressor, and other parts have been omitted as appropriate.

[0028] Furthermore, although a horizontal scroll compressor is used as an example of a compressor in the embodiments described below, the embodiments are not particularly limited. Therefore, this embodiment can be generally applied to any horizontal compressor having an oil supply mechanism.

[0029] As shown in Figure 4, the lubrication mechanism 100 of this embodiment is composed of a housing member 110 and a lubrication member 120. The lubrication member 120 of this embodiment is preferably made of a material that has oil resistance and refrigerant resistance. For example, resin can be used as the material for the lubrication member 120. More specific examples of materials for the lubrication member 120 include PBT (Poly Butylene Terephthalate) and LCP (Liquid Crystal Polymer), but these do not particularly limit the embodiment. Furthermore, the lubrication mechanism 100 of this embodiment may include an O-ring 130 to improve the adhesion between the housing member 110 and the lubrication member 120 and form a sealed space. The O-ring 130 can be made of rubber as an example, but these do not particularly limit the embodiment.

[0030] The housing member 110 and the lubrication member 120 of this embodiment are equipped with a configuration (hereinafter referred to as a fall prevention mechanism) that prevents the lubrication member 120 from falling off the housing member 110. In this embodiment, the lubrication mechanism 100, by providing the housing member 110 and the lubrication member 120 with a fall prevention mechanism, eliminates the need to fix the housing member 110 and the lubrication member 120 by welding or the like, thereby reducing manufacturing costs. Furthermore, since a configuration that does not require welding is possible, the lubrication member 120 can be integrally formed from a material such as resin, which further reduces costs.

[0031] As shown in Figure 4, the lubrication mechanism 100 consists of a housing member 110 and a lubrication member 120 fitted together, with an O-ring 130 providing a seal. When the scroll mechanism of the compressor is driven and negative pressure is generated, the lubricating oil stored in the compressor is drawn up to the lubrication member 120, and lubricating oil is supplied to the sliding parts. The arrows in Figure 4 indicate the flow of lubricating oil.

[0032] So far, the fuel supply mechanism 100 in this embodiment has been described. Next, the housing member 110 and the fuel supply member 120 constituting the fuel supply mechanism 100 of this embodiment will be described as examples of the embodiment.

[0033] First, the first example of this embodiment will be described with reference to FIGS. 5 to 7.

[0034] FIG. 5 is a diagram showing the structure of the fuel supply member 120 in the first example of this embodiment. FIG. 5(a) is a front view of the fuel supply member 120 in the first example of this embodiment, and FIG. 5(b) is a side view of the fuel supply member 120 in the first example of this embodiment.

[0035] As shown in FIGS. 5(a) and 5(b), the fuel supply member 120 of this embodiment is composed of a cap portion 121 corresponding to the cap member 151 in the prior art and a pipe portion 122 corresponding to the pipe member 152 in the prior art. That is, the cap portion 121 of the fuel supply member 120 fits into the housing member 110, and the end of the pipe portion 122 reaches the lubricating oil storage portion.

[0036] Further, as shown in FIGS. 5(a) and 5(b), the cap portion 121 can include a protrusion 123 for fixing the fuel supply member 120 and the housing member 110. The protrusion 123 constitutes a dropout prevention mechanism on the fuel supply member 120 side in this embodiment. In the embodiment to be described, as shown in FIG. 5 and the like, the fuel supply member 120 including two protrusions 123 is described, but the embodiment is not particularly limited. Therefore, the number of protrusions 123 can be any number.

[0037] As shown in FIG. 5(a), the cap portion 121 of the fuel supply member 120 has an outer diameter dimension of A and a circumferential diameter dimension of the protrusion 123 of B (that is, A < B). By making the housing member 110 have a structure corresponding to these dimensions, the fuel supply member 120 and the housing member 110 can be coupled and fixed.

[0038] Furthermore, in the conventional lubrication member 150, as shown in Figures 2 and 3, the longitudinal direction of the cap member 151 and the direction of lubrication oil suction at the end of the pipe member 152 are perpendicular. On the other hand, in the lubrication member 120 of this embodiment, as shown in Figure 5(b), the longitudinal direction of the pipe portion 122 (line D shown as a dashed line in Figure 5(b)) is configured to be oblique to the longitudinal direction of the cap portion 121 (line C shown as a dashed line in Figure 5(b)). As shown in Figure 5(b), by making the pipe portion 122 oblique, the end that suctions in lubricating oil can be moved away from the sliding part of the compressor without increasing the dimensions of the lubrication member 120. This reduces the suction of air bubbles generated from the lubricating oil agitated by the sliding part, and allows for a stable supply of lubricating oil. Furthermore, by angling the pipe section 122, the effort required for integral molding when manufacturing with resin can be reduced, and the overall height of the lubrication member 120 (the dimension in the same direction as line C in Figure 6) can be reduced.

[0039] Figure 6 shows the structure of the housing member 110 in the first example of this embodiment. Figure 6(a) is a perspective view of the housing member 110 in the first example of this embodiment, Figure 6(b) is a front view of the housing member 110 in the first example of this embodiment, and Figure 6(c) is a side cross-sectional view of the housing member 110 in the first example of this embodiment.

[0040] In the first example of this embodiment, the housing member 110 is provided with grooves 111, as shown in Figures 6(a) to (c). The grooves 111 constitute a fall prevention mechanism on the housing member 110 side in this embodiment. The grooves 111 in this embodiment are provided on the end face and inner circumferential surface of the housing member 110.

[0041] As shown in Figure 6(b), the housing member 110 has an opening (A) with the same dimensions as the outer diameter of the cap portion 121 of the lubrication member 120, and a notch is provided in the opening. The notch is provided with a diameter B that is larger than dimension A.

[0042] The groove 111 is configured so that the projection 123 of the lubrication member 120 can be inserted into the notch and the lubrication member 120 can be rotated. By rotating the lubrication member 120, the projection 123 can be locked into the portion of the groove 111 with dimension A, preventing the lubrication member 120 from moving in the axial direction of the housing member 110. This prevents the lubrication member 120 from falling out of the housing member 110.

[0043] Although Figure 6 shows an example in which two grooves 111 are provided, this does not particularly limit the embodiment. Therefore, the number of grooves 111 provided in the housing member 110 can be any number that matches the number of protrusions 123.

[0044] Figure 7 shows an example of the assembly of the housing member 110 and the lubrication member 120 in the first example of this embodiment. Figure 7(a) shows the state before inserting the lubrication member 120 into the housing member 110, Figure 7(b) shows the state after inserting the lubrication member 120 into the housing member 110, and Figure 7(c) shows the state after rotating the lubrication member 120 from the state in Figure 7(b). The upper figures in Figures 7(a) to (c) are front views of each state, and the lower figures in Figures 7(a) to (c) are perspective views of each state.

[0045] In the manufacturing of the lubrication mechanism 100 in the first example of this embodiment, when assembling the housing member 110 and the lubrication member 120, first, as shown in Figures 7(a) and (b), the lubrication member 120 is inserted into the housing member 110. Alternatively, an O-ring 130 may be inserted into the housing member 110 before inserting the lubrication member 120 into the housing member 110. The lubrication member 120 is inserted into the housing member 110 so that the groove 111 and the projection 123 align.

[0046] Subsequently, as shown in Figure 7(c), the lubrication member 120 is rotated to lock the projection 123 into the groove 111. This prevents the lubrication member 120 from falling out of the housing member 110.

[0047] Next, a second example of this embodiment will be described with reference to Figures 8 to 10.

[0048] Figure 8 shows the structure of the refueling member 120 in the second example of this embodiment. Figure 8(a) is a front view of the refueling member 120 in the second example of this embodiment, and Figure 8(b) is a side view of the refueling member 120 in the second example of this embodiment.

[0049] In the second example of this embodiment, the lubrication member 120 includes a cap portion 121 and a pipe portion 122, and the cap portion 121 is provided with a hole 124. As shown in Figure 8(a), the outer diameter of the cap portion 121 is A. The hole 124 constitutes the anti-detachment mechanism on the lubrication member 120 side in this embodiment. As shown in Figure 8(b), the hole 124 can be provided on the side of the cap portion 121, that is, on the surface in contact with the inner circumferential surface of the housing member 110. The hole 124 does not have to be configured to penetrate from the side of the cap portion 121 to the inner surface, as shown in Figure 8(b), but may be in the form of a recess that does not penetrate to the inner surface of the cap portion 121, for example.

[0050] Furthermore, in the second example of this embodiment, the refueling member 120 can also be configured with the pipe portion 122 at an angle, as described in the first example. That is, as shown in Figure 8(b), the pipe portion 122 can be configured so that its longitudinal direction (line D shown as a dashed line in Figure 8(b)) is at an angle to the longitudinal direction of the cap portion 121 (line C shown as a dashed line in Figure 8(b)).

[0051] Figure 9 shows the structure of the housing member 110 in the second example of this embodiment. Figure 9(a) is a perspective view of the housing member 110 in the second example of this embodiment, and Figure 9(b) is a side cross-sectional view of the housing member 110 in the second example of this embodiment.

[0052] As shown in Figures 9(a) and (b), the housing member 110 is configured to have a hole 112. The hole 112 constitutes the anti-detachment mechanism on the housing member 110 side in this embodiment. As shown in Figures 9(a) and (b), the hole 112 penetrates from the side to the inner surface of the housing member 110. The hole 112 of the housing member 110 is provided at a position corresponding to the hole 124 of the lubrication member 120.

[0053] Furthermore, as shown in Figure 9(b), the housing member 110 has an opening (A) with the same dimensions as the outer diameter of the cap portion 121 of the lubrication member 120, allowing the lubrication member 120 to be inserted. When the lubrication member 120 is inserted into the housing member 110, the hole 112 in the housing member 110 and the hole 124 in the lubrication member 120 become connected. Then, by inserting fixing members 140 such as pins or screws into the holes 112 and 124, the housing member 110 and the lubrication member 120 can be connected and fixed. This prevents the lubrication member 120 from falling out of the housing member 110.

[0054] In Figures 8 and 9, examples are shown in which the housing member 110 has one hole 112 and the lubrication member 120 has one hole 124, but this does not particularly limit the embodiment. Therefore, the number of holes 112 in the housing member 110 and the number of holes 124 in the lubrication member 120 can be any number, as long as they are the same number.

[0055] Figure 10 shows the structure of the lubrication mechanism 100 in which the housing member 110 and the lubrication member 120 are assembled in a second example of this embodiment.

[0056] In the manufacturing of the lubrication mechanism 100 in the second example of this embodiment, when assembling the housing member 110 and the lubrication member 120, first, the lubrication member 120 is inserted into the housing member 110. The lubrication member 120 is inserted into the housing member 110 so that the position of the hole 112 in the housing member 110 aligns with the position of the hole 124 in the lubrication member 120. Before inserting the lubrication member 120 into the housing member 110, an O-ring 130 may be inserted into the housing member 110.

[0057] Subsequently, as shown in Figure 10, the fixing member 140 is inserted into the hole 112 of the housing member 110 and the hole 124 of the lubrication member 120. This secures the housing member 110 and the lubrication member 120, preventing the lubrication member 120 from falling out of the housing member 110.

[0058] Furthermore, the compressor to which the above-described embodiment is applied can be mounted on a refrigerator. This also reduces the manufacturing cost of the refrigerator.

[0059] According to the embodiments of the present invention described above, it is possible to provide compressors and refrigerators with reduced manufacturing costs.

[0060] Although the present invention has been described above with reference to embodiments, the present invention is not limited to the embodiments described above. It is included within the scope of the present invention as long as it achieves the effects and advantages of the present invention within the range of embodiments that a person skilled in the art could deduce. [Explanation of Symbols]

[0061] 1… Horizontal scroll compressor, 10… Oil storage room, 11…Discharge pipe, 20...Motor room, 21...motor, 30... Pump room, 31... High-pressure chamber, 32...Swivel scroll, 33... Fixed scroll, 34... Suction pipe, 100... Fueling mechanism, 110...Housing components, 111... Groove section, 112...hole, 120... Lubrication components, 121...Cap part, 122...Pipe section, 123...Protrusion, 124...hole, 130... O-ring, 140... Fixing member, 150... Lubrication components, 151... Cap component, 152... Pipe components, 160...Sealing material

Claims

1. A compressor having a lubrication mechanism that supplies lubricating oil to the sliding parts, The aforementioned lubrication mechanism is configured to include a lubrication member and a housing member, The oil supply member and the housing member are equipped with a mechanism to prevent the oil supply member from falling out of the housing member. Compressor.

2. The mechanism for preventing the oil supply member from falling off is a projection provided on the oil supply member. The mechanism on the housing member side that prevents the detachment is a groove into which the projection can be inserted and rotated. The compressor according to claim 1.

3. The mechanism for preventing the detachment is a hole provided in the lubrication member and the housing member. The oil supply member and the housing member are connected by a fixing member inserted into the hole in the oil supply member and the hole in the housing member. The compressor according to claim 1.

4. The hole in the aforementioned lubrication member is characterized by being a through-hole, The compressor according to claim 3.

5. The hole in the aforementioned lubrication member is not a through hole, The compressor according to claim 3.

6. The oil supply member is made of resin. The compressor according to claim 1.

7. The lubrication mechanism further comprises an O-ring. The compressor according to claim 1.

8. The refueling mechanism is configured such that the pipe portion is positioned diagonally with respect to the length direction of the cap portion of the refueling mechanism. The compressor according to claim 1.

9. A refrigerator comprising a compressor according to any one of claims 1 to 8.

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