阅读说明：本技术 压缩机及具备该压缩机的设备 (Compressor and equipment with same ) 是由 中村考作 铃木遵自 长尾智大 小野利明 铃木启爱 于 2019-09-04 设计创作，主要内容包括：本发明提供降低罩的膨润引起的影响的压缩机及具备该压缩机的设备。压缩机具备：润滑油、含有能够膨润的材料而形成且具有罩孔及插通孔的罩、以及容纳罩安装部件的密闭容器,其中,具有插通插通孔的一部分的凸部或脱离抑制部。(The invention provides a compressor capable of reducing influence caused by swelling of a cover and equipment provided with the compressor. The compressor is provided with: the lubricant oil, a cover which is formed by containing a material capable of swelling and is provided with a cover hole and an insertion hole, and a closed container for accommodating a cover mounting component, wherein the closed container is provided with a convex part or a separation inhibiting part which is inserted through a part of the insertion hole.)

1. A compressor is provided with:

lubricating oil;

a cover formed of a material capable of swelling and having an insertion hole; and

a closed container for accommodating the cover mounting member,

the above-mentioned compressor is characterized in that,

has a projection or a separation suppressing part inserted through a part of the insertion hole.

2. The compressor of claim 1,

the cover has a fixed portion fixed to the cover mounting member,

the protruding portion or the separation suppressing portion is disposed apart from an end portion of the insertion hole on the fixed portion side.

3. The compressor of claim 2,

the cover has a cover hole for passing the refrigerant supplied into the closed container,

the fixed portion is located above the cover hole.

4. The compressor of claim 3,

the insertion hole is located below the cover hole.

5. Compressor according to claim 3 or 4,

an upper support part is provided above the fixed part,

the lower end of the upper support part is in contact with the upper surface of the fixing member.

6. A compressor according to any one of claims 1 to 5,

has two insertion holes and two projections or disengagement suppressing portions,

the separation suppressing portion connects the two convex portions.

7. An apparatus, characterized in that it comprises,

a compressor according to any one of claims 1 to 6.

Technical Field

The present invention relates to a compressor and an apparatus including the same.

Background

Patent document 1 discloses that the fixing of the auxiliary cover 163 made of a flexible material is performed by fixing the tip of the convex portion 165 by melting and penetrating the convex portion 170 (paragraphs 0088-. This can reduce deterioration of the contact state due to swelling of the auxiliary cover 163 and the like.

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 is considered to have a problem that a fixed portion has no margin, and when the fixed portion swells, the arc portion 162 and the like are bent and float from the cover portion 160.

Means for solving the problems

In view of the above, the present invention provides a compressor including:

lubricating oil;

a cover formed of a material capable of swelling and having a cover hole and an insertion hole; and

a closed container for accommodating the cover mounting member,

the compressor has a convex portion or a separation suppressing portion inserted through a part of the insertion hole.

Drawings

Fig. 1 is a longitudinal sectional view of a compressor according to an embodiment.

Fig. 2 is an exploded perspective view of the cover and the muffler (cover attachment member) according to the embodiment.

Fig. 3 is a front view of the cover and the muffler of the embodiment.

Fig. 4 shows (a) a front view of the cover of the embodiment before deformation (for example, immediately after manufacture), and (b) a front view of the cover of the embodiment in which thermal expansion and swelling have occurred.

In the figure:

1-compressor, 10-refrigerant suction pipe, 11-cover, 18-closed container, 19-lubricating oil, 110-cover hole, 111-upper support part, 112-insertion hole, 113-fixed part, 114-eaves part, 118-fixed part, 119-separation inhibiting part, 12-muffler (cover mounting part), 120-suction hole, 121-horizontal part, 122-convex part.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a longitudinal sectional view of a compressor 1 according to an embodiment.

(compressor 1)

The compressor 1 includes a refrigerant suction pipe 10, a cover 11, a muffler 12, a lubricant oil 19 stored therebelow, and a closed container 18 accommodating them. The refrigerant suction pipe 10 communicates the inside and outside of the sealed container 18 of the compressor 1, and supplies a refrigerant circulating in a refrigeration cycle or the like into the sealed container. The hood 11 traps the refrigerant discharged from the refrigerant suction pipe 10. The muffler 12 reduces the refrigerant sound collected from the cover 11, and sends out the refrigerant sound to the compression chamber.

The compressor 1 draws and spreads the lubricant oil 19 as it is driven, and the lubricant oil 19 splashes and adheres to the respective members in the closed casing 18.

Fig. 2 is an exploded perspective view of the cover 11 and the muffler 12 (cover attachment member) according to the embodiment. Fig. 3 is a front view of the cover 11 and the muffler 12 of the embodiment. In fig. 2, the "front" direction refers to the direction of the refrigerant flow discharged from the refrigerant suction pipe 10. For convenience of explanation, the direction orthogonal to the forward direction and the gravitational acceleration direction is referred to as the left-right direction, and the gravitational acceleration direction is referred to as the downward direction.

(muffler 12)

The muffler 12 has a suction hole 120, two horizontal portions 121, and a convex portion 122.

The suction port 120 is a path through which refrigerant flows, communicating with the muffler 12 and the compression chamber. The two horizontal surface portions 121 are located above the suction hole 120 and protrude horizontally from the muffler 12. The two horizontal plane portions 121 are separated from each other in the horizontal direction as viewed from the refrigerant direction. The recess 113 described below is disposed in the divided region.

(cover 11)

The cover 11 has a main member formed integrally of a flexible member formed of a material capable of swelling, preferably an elastic material, for example, rubber such as Hydrogenated Nitrile Butadiene Rubber (HNBR). HNBR preferably has bound acrylonitrile of more than 32% and less than 40%. Examples of the material that can be swelled include NBR in addition to HNBR.

A fixing member 118 and a detachment prevention portion 119, which are formed of, for example, a resin member harder than the main member, are attached to the cover 11.

The main member has a cover hole 110 communicating with the suction hole 120, an upper support 111, an insertion hole 112 (insertion portion), a fixed portion 113, and a brim portion 114. The main member has different vertical and horizontal dimensions, and in the present embodiment, the vertical dimension is longer than the horizontal dimension, that is, the swelling length in the vertical direction is longer than the horizontal direction.

The upper support part 111 is located above the horizontal surface part 121. The upper support portion 111 protrudes rearward from the fixed portion 113, and preferably contacts the upper end of the fixing member 118 when the fixing member 118 is attached. This enables the support by the upper support portion 111 to be placed on the fixing member 118 in addition to the support by the below-described clamping by the fixing member 118.

The fixed portion 113 is located between the upper support portion 111 and the eaves portion 114 in the vertical direction, and the fixing member 118 is attached thereto. The fixed portion 113 is sandwiched between the fixing member 118 and the muffler 12 in the front-rear direction. The clamping preferably fixes the displacement of the fixed part in each direction. Such fixing can be performed, for example, as follows: the left and right width of the fixed portion 113 is made longer than the left and right width of the muffler 12, and the claws (not shown) at the left and right ends of the fixed portion 113 reach the rear surface of the muffler 12, and the fixed portion 113 of the flexible member or the elastic member is attached in a deformed state. By such relatively firm fixation, the upper end side of the cover 11 and the muffler 12 are not separated or are difficult to separate, and the lubricating oil is prevented from entering between them and reaching the holes 110 and 120.

The left and right ends of the fixed portion 113 except the fixing member 118 are located right above or on the left and right outer sides of the horizontal plane portion 121. This makes it easy to fill the space between the fixed portion 113 and the horizontal surface portion 121 with an object, and prevents the lubricant from entering. The fixed portion 113 and/or the fixing member 118 are inclined in the left-down direction or the right-down direction. This can guide the lubricating oil in a direction away from the cover hole 110 and the suction hole 120.

The protrusion 122 and/or the detachment prevention portion 119 are inserted into the insertion hole 112. In the present embodiment, the rear end of the projection 122 has a dimension to reach the rear of the rear end of the insertion hole 112, that is, only the projection 122 is inserted into the insertion hole 112. Alternatively, a portion extending in the forward direction may be added to the disengagement preventing portion 119, and this portion may be inserted through the insertion hole 112 and fixed to the protruding portion 122.

The insertion hole 112 is present on the opposite side of the fixed portion 113 with the hole 110 therebetween, and is larger than the size of the inserted convex portion 122. The insertion hole 112 may be larger than the projection 122 in all directions, but may be longer than the projection 122 at least in a direction from the insertion hole 112 toward the fixed portion 113 (in the present embodiment, in the vertical direction). Thus, even if the protruding portion 122 and the detachment prevention portion 119 are fixed, the insertion hole 112 remains a gap that is movable to some extent in the vertical direction at least before the cover 11 swells (for example, before a sufficient drive accumulation time of the compressor 1 has elapsed from the time of manufacture). Since the fixed portion 113 is strongly fixed as described above, the main member cannot absorb the influence when it swells. However, since the insertion hole 112 is located below the holes 110 and 120, the necessity of preventing the dropping of the lubricating oil is low. Therefore, the present embodiment provides a degree of freedom in the vertical direction. Further, since the inside of the closed casing 18 is at a high temperature, the influence of thermal expansion cannot be ignored except for swelling.

Fig. 4 shows (a) a front view of the cover of the embodiment before deformation (for example, immediately after manufacture), and (b) a front view of the cover of the embodiment in a state in which thermal expansion and swelling have occurred.

When the initial length of the cover 11 is L0, the dimension L1 becomes L0+ L3 when thermal expansion and swelling occur. I.e., a length L3 in the longitudinal direction. Since the upper end side of the cover 11 is fixed to the fixed portion 113, if swelling or thermal expansion occurs, it expands (deforms) downward. Therefore, in the initial state, the insertion hole 112 is preferably arranged so as to leave L3 or more between the end (upper end in the present embodiment) of the convex portion 122 on the side of the fixed portion 113 and the end (upper end) of the insertion hole 112 on the side of the fixed portion 113. That is, the convex portion 122 is disposed apart from the end portion of the insertion hole 112 on the fixed portion 113 side.

Therefore, even if the main member swells due to the influence of the lubricating oil, the refrigerant, or the like, the deformation due to the swelling can be absorbed by the gap of the dimension L3 remaining in the insertion hole 112, and therefore, the cover 11 can be prevented from floating up from the muffler 112. The detachment prevention portion 119 can be fixed by ultrasonic welding or the like after being inserted through a hole provided in the projection portion 122. By this fixation, the movement of the cover 11 in the front-rear direction is restricted or fixed, and the detachment from the muffler 12 can be suppressed.

In consideration of swelling of the main member, the dimensional difference between the insertion hole 112 and the convex portion 122 or the separation suppressing portion 119 can be determined as follows.

L3 ═ L0 × (thermal expansion coefficient + swelling coefficient) ([ length of initial state before swelling ])

Here, the thermal expansion coefficient is a difference in dimensional change rate between the cover 11 and the muffler 12 due to a temperature difference between the actual use temperature and the normal temperature, and in the present embodiment, it is 2% at the actual use temperature of 70 ℃. The swelling degree can be determined from the results of the immersion test of immersing a cover 11 molded from HNBR having 32% or more and less than 40% of bound acrylonitrile in a water at 40 ℃ to give a dynamic viscosity of 5.1 to 6.1mm, and is 2.5 to 3.5% in the present embodiment²(ii) refrigerating machine oil per second, and the number of days until the oil is saturated by swelling under actual use temperature conditions.

Other combinations of actual use temperatures, materials used for the cover 11 and the muffler 12, and refrigerating machine oil may be determined by performing the same test to determine the dimensional difference between the insertion hole 112 and the projection 122 or the separation suppressing portion 119.

In the present embodiment, two projections 122 and the insertion hole 112 are provided in a left-right arrangement, and the two projections 122 are connected (integrated by ultrasonic welding) by a separation suppressing portion 119 extending left and right, thereby suppressing separation of the cover 11. Thus, even a small-sized detachment prevention portion 119 can prevent detachment. If the separation distance from the closed casing 18 can be secured, for example, the protrusion 122 and the insertion hole 112 may be formed one by one, and the separation suppressing portion 119 may be made sufficiently larger than the insertion hole 112 to suppress the separation.

The compressor of the present embodiment can be applied to various devices such as a refrigerator and an air conditioner.