JPH0742949B2 - Hermetic electric compressor and jig for assembling the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hermetic electric compressor used in, for example, a refrigerator in which an electric element and a compression element are contained in a hermetic container.

[Prior Art] FIG. 39 shows a conventional compressor disclosed in, for example, JP-A-57-23181, in which (1) is a closed container and (2) is a closed container. With built-in electric element,
It has a stator (2a), a rotor (2b) arranged in this stator (2a), and a crankshaft mounted on this rotor (2b), and this crankshaft (2c) is oriented vertically. It is arranged in the closed container (1). (3) is a compression element mounted on the upper end surface of the electric element (2) and driven by the crankshaft (2c), and has a flange (3a) mounted on the upper end surface of the electric element (2). Then, the electric element (2) constitutes an inner body which is a main member.
(4) is a support provided along the circumferential direction on the inner surface of the hermetically sealed container, and (5) is mounted between the support and the flange (3a) of the compression element (3). With spring
The inner body mainly composed of the electric element (2) and the compression element (3) is elastically supported in the closed container (1).

In the compressor configured in this way, the electric element (2)
Driving force is transmitted to the compression element (3) by the crankshaft (2c), and the compression element (3) operates, whereby the refrigerant gas is compressed and discharged to the outside of the closed container (1). At this time, the internal body including the electric element (2) and the compression element (3) vibrates due to torque fluctuations of the crankshaft (2c) and movement of the center of gravity of the compression element (3). This vibration is absorbed by the spring (5), and the vibration transmitted to the closed container (1) via the spring (5) is damped.

In addition, as a hermetic electric compressor having such a structure, there is a problem in Japanese Patent Laid-Open No.
It is also shown in Japanese Patent Publication 64-272. Even in the one disclosed in this publication, a spring is interposed between a projecting member provided on the compression element and a holding member provided on the closed container at three or more locations, and the electric element and the compression element are provided. The transmission of the internal body having the vibration to the vibration sealed container is damped.

[Problems to be Solved by the Invention] However, in the conventional hermetic electric compressor configured as described above, at least three or more springs (5) are required, and a hermetically sealed container is provided. There is a problem that the space required in (1) becomes large and it is difficult to reduce the size as a whole.

The present invention has been made in view of the above points, and an object of the present invention is to obtain a hermetic electric compressor that can be downsized without impairing the attenuation of vibration to the hermetic container.

Another object of the present invention is to provide a hermetic electric compressor capable of limiting the contraction displacement of the elastic body elastically supporting the inner body having the electric element and the compression element and suppressing the destruction of the elastic body. .

Still another object of the present invention is to obtain an assembling jig which facilitates the assembling of the hermetic electric compressor.

[Means for Solving the Problems] A hermetic electric compressor according to a first aspect of the present invention is an electric element having a stator, a rotor and a crankshaft, and a crankshaft mounted on one end surface of the electric element. The compression element driven by the motor is disposed in the closed container with the crankshaft in the horizontal direction, and the first elastic body is provided between the outer peripheral lower portion of the stator of the electric element and the side surface of the closed container facing the lower portion. , Second elastic members are respectively mounted between the outer peripheral upper part of the stator of the electric element and the side surface of the closed container facing the upper part,
One end is connected to the side end surface of the compression element, and is disposed so as to penetrate through the side end surface of the closed container facing the side end surface of the compression element, and between the side end surface of the compression element and the side end surface of the closed container. A discharge pipe having an elastic function is provided.

A hermetic electric compressor according to a second aspect of the present invention includes an electric element having a substantially cylindrical stator, a rotor, and a crankshaft, and a compression element mounted on one end surface of the electric element and driven by the crankshaft is hermetically sealed. A cylindrical shell having a plurality of holes formed in the circumferential direction is fitted on the outer peripheral surface of the stator of the electric element arranged in the container, and one end is located in the hole of the shell and the other end is located. Is provided with a plurality of elastic bodies mounted in a closed container facing the hole.

A hermetic electric compressor according to a third aspect of the present invention includes an electric element having a substantially cylindrical stator, a rotor, and a crankshaft, and a compression element mounted on one end surface of the electric element and driven by the crankshaft. The electric element is disposed in a closed container having a plurality of holes formed in the circumferential direction on the side surface facing the outer peripheral surface of the stator, one end penetrates the hole of the closed container, and the other end faces the hole. A plurality of elastic bodies mounted on the outer peripheral surface of the stator of the electric element are provided, and a sealing body that covers the hole of the closed container from the outside and presses one end of the elastic body is provided.

A hermetic electric compressor according to a fourth aspect of the present invention includes an electric element having a substantially cylindrical stator, a rotor, and a crankshaft, and a compression element mounted on one end surface of the electric element and driven by the crankshaft. A plurality of members arranged in the closed container and arranged in the circumferential direction between the outer peripheral surface of the stator of the electric element and the side surface of the closed container facing the outer peripheral surface to elastically support the electric element and the compression element. In addition to the hollow elastic body, a restricting body that is disposed inside the elastic body and that limits the axial contraction displacement of the elastic body is provided.

A jig for assembling a hermetic electric compressor according to a fifth aspect of the present invention includes a first large-diameter portion having a diameter larger than the diameter of the other end of the electric element having a compression element attached to one end, and a lower portion of the large-diameter portion. A first small-diameter portion having a smaller diameter than the other end of the electric element connected to the second electric element, and a concave portion in which the other end of the electric element is arranged in the first large-diameter portion; The closed container having a lid has a second small diameter portion having a diameter smaller than the opening diameter of the main body and a second large diameter portion connected to the lower portion from the small diameter portion and having a diameter larger than the opening diameter of the main body, and has the same axis as the recess. And a step portion in which the open end of the main body is arranged is formed in the second small diameter portion.

[Operation] In the first invention of the present invention, the first and second elastic bodies and the discharge pipe arranged in the vertical direction with respect to the electric element elastically support the electric element and the compression element in the closed container, Damping the transmission of vibrations generated by the electric element and the compression element to the closed container.

In the second invention, the elastic body elastically supports the electric element and the compression element in the closed container, and the hole formed in the cylindrical shell facilitates the attachment of the elastic body.

In the third invention, the elastic body elastically supports the electric element and the compression element in the closed container, and the hole and the sealing body formed in the closed container facilitate the mounting of the elastic body.

In the fourth aspect of the invention, the elastic body elastically supports the electric element and the compression element in the closed container, and the restricting body suppresses the contraction displacement of the elastic body to prevent the elastic body from being broken.

In the fifth aspect, the concave portion positions and holds one end of the electric element and the step portion positions and holds the main body of the closed container, respectively, and facilitates the assembly of the electric element and the compression element in the closed container.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention, in which (1) is a recess (1) at the bottom and top of the side surface.
a) An airtight container in which (1b) is formed, (2) is an electric element contained in the airtight container, and includes a stator (2a), a rotor (2b) arranged in the stator (2a), and this rotor. It has a crankshaft (2c) attached to (2b), and the crankshaft (2c) is arranged in the horizontal direction and is disposed in the closed container (1). (3) is a compression element mounted on one end surface of the electric element (2) and driven by the crankshaft (2c), and is a cylinder (3a) attached to the crankshaft (2c) of the electric element (2). ) And this cylinder (3
a) attached to both end faces of the crankshaft (2
It has a lower bearing (3b) and a lower bearing (3c) that axially support c), and the electric element (2) constitutes an internal body that is a main element. (6) is a cylindrical shell fitted and fixed to the outer peripheral surface of the electric element (2), that is, the outer peripheral surfaces of the stator (2a) and the lower bearing (3c). Lower holes (6a) (6b) are formed at positions corresponding to the upper recesses (1a) (1b), respectively.
The center of a) (6b) passes through the center of gravity of the inner body having the above-mentioned electric element (2) and compression element (3), and the electric element (2)
It is located on the extension of the vertical diameter of. Reference numeral (7a) is a first elastic body mounted between the lower outer peripheral portion of the stator (2a) of the electric element (2) and the side surface of the closed container (1) facing the lower portion, and in this embodiment, Uses a coil spring, the center of the lower hole (6a) of the shell (6) is aligned with the axis of the shell (6a), one end of which is internally provided, and the other end of which is the closed container (1). ) It is provided in the lower recess (1a). (7a) is a second elastic body mounted between the outer peripheral upper part of the stator (2a) of the electric element (2) and the side surface of the closed container (1) facing the upper part, and in this embodiment, Uses a coil spring, the center of the upper hole (6b) of the shell (6) is aligned with the axial center of the shell (6), one end is internally provided in the hole (6b), and the other end is the closed container (1). ) Is internally provided in the recess (1b), and the inner body is concentrically suspended and supported in the closed container (1) from above and below by the first elastic body (7a). ing.
(8) is a side end surface of the compression element (3), that is, one end of which is connected to the discharge port, and penetrates the side end surface of the closed container (1) facing the side end surface of the compression element (3). A discharge pipe that is disposed and has an elastic function between the side end surface of the compression element (3) and the side end surface of the closed container (1). In this embodiment, the discharge tube is made of an elastic material, and
In order to have an elastic function, the shaft center is extended horizontally from the discharge port of the compression element (3) to the center line of the crankshaft (2c) toward the side end surface of the closed container (1). The upper end of the compression element (3) upward along the side end surface of the compression element (3), and further toward the electric element (2) side along the outer peripheral surface of the compression element (3). After being bent in the shape of a horizontal U, the compression element (3) is extended to the lower part of the side end surface, and further to the opposite side of the electric element (2) along the outer peripheral surface of the compression element (3) in the horizontal U direction. After being bent in the shape of a letter, it is extended upward along the side end surface of the compression element (3) to the approximate center of this side end surface, and then to the side end surface of the closed container (1). The electric element (2) and the compression element (3). An internal body having to play a role in elastically supported by the closed container (1).

In the compressor configured in this way, the electric element (2)
Driving force is transmitted to the compression element (3) by the crankshaft (2c), and the compression element (3) operates, thereby sucking the refrigerant gas in the compression element (3) from the outside of the closed container (1). The refrigerant gas is compressed and discharged to the outside of the closed container (1) via the discharger (8). At this time, the internal body including the electric element (2) and the compression element (3) vibrates due to torque fluctuations of the crankshaft (2c) and movement of the center of gravity of the compression element (3). This vibration is absorbed by the pair of upper and lower first and second elastic bodies (7a) and (7b) and the discharge pipe (8), and the first and second elastic bodies (7a) and (7b) and the discharge pipe (8) are absorbed. Vibrations transmitted to the closed container (1) via () are damped.

FIG. 4 shows a second embodiment of the present invention, which is different from the first embodiment in that the closed container (1) of the discharge pipe (8) is It just changes the fixed position. That is, the closed container (1) of the discharge pipe (8)
The compression element (3) is positioned on the center line of the crankshaft (2c) in the same manner as the compression element (3) is fixed to the side end surface of the crankshaft (2c).

With this configuration, in addition to the same effects as the first embodiment, the rotary shaft of the internal body having the electric element (2) and the compression element (3), that is, the crank shaft (2
The vibration around the central axis of c) is difficult to achieve in the vertical and horizontal directions, and the vibration reduction effect can be further enhanced.

FIG. 5 shows a third embodiment of the present invention,
Refrigerant gas compression element (3) compared to that of the first embodiment
The installation position of the suction pipe (9) for the inflow to the air is specified. That is, in the third embodiment, the flexible suction pipe (9) in the closed container (1) is connected to the side end surface of the compression element (3) and the side end surface of the closed container (1). It is located between.

With this configuration, the same effect as that of the first embodiment can be obtained, and the refrigerant gas can directly flow into the compression element (3) from the compression element (3) side through the suction pipe (9). It is possible to suppress the temperature rise of the sucked refrigerant gas and improve the suction efficiency. At this time, the spring constant of the suction pipe (9) from the compression element (3) to the closed container (1) is
If the spring constant of the discharge pipe (8) from the first and second elastic bodies (7a) (7b) and the compression element (3) to the closed container (1) is much smaller, the electric element (2). Also, there is almost no influence on the damping effect on the closed container (1) of the vibration in the internal body having the compression element (3).

FIG. 6 shows a fourth embodiment of the present invention, and the suction pipe (9) shown in the third embodiment with respect to the second embodiment.
The position is specified to the position of, and an effect having the effect of the second and third embodiments is combined.

7 to 11 show a fifth embodiment of the present invention, in which (1) is a recess (1) in the lower and upper portions of the side surface.
a) An airtight container in which (1b) is formed, (2) is an electric element contained in the airtight container (1), and includes a stator (2a) and a rotor (2b) disposed in the stator (2a). ) And a crankshaft (2c) attached to the rotor (2b), and the crankshaft (2c) is arranged in the horizontal direction and disposed in the closed container (1). Recesses (1a) (1b) of the closed container (1) on the outer peripheral surface of (2a)
Notches (2a1) and (2a2) are formed at positions facing each other. (3) is attached to one end surface of the electric element (2),
A compression element driven by the crankshaft (2c), a cylinder (3a) mounted on the crankshaft (2c) of the electric element (2) and both end surfaces of the cylinder (3a), respectively. Upper and lower bearings (3b) that support the shaft (2c)
(3c), and the electric element (2) constitutes an internal body which is a main element. (6) is a cylindrical shell fitted and fixed to the outer peripheral surface of the electric element (2), that is, the outer peripheral surfaces of the stator (2a) and the lower bearing (3c). Upper holes (6a) (6b) are formed at the positions corresponding to the upper recesses (1a) (1b), respectively, and the notches (below the upper holes (6a) (6b) and the stator (2a) ( 2a1) and (2a2) form a space, and the centers of these holes (6a) and (6b) pass through the center of gravity of the internal body having the electric element (2) and the compression element (3). The holes (6a) (6b) are formed on the extension lines of the vertical diameter of the element (2), and the locking notches (6c) (6d) protruding in the radial extension direction are formed in each of the holes (6a) (6b). (7
a) is a first elastic body mounted between the outer lower part of the stator (2a) of the electric element (2) and the side surface of the closed container (1) facing the lower part, and in this embodiment, ,
A large-diameter portion (7a1) having a diameter larger than the diameter of the hole (6a) of the shell (6) at one end and upright in the axial direction from the large-diameter portion (7a1), and the distance L is a cutout (6c) for locking. A coil spring having a standing portion (7a2) longer than the distance at the other end and having a diameter at the other end larger than the diameter of the concave portion (1a) of the closed container (1) is used. ), The large diameter part (7a1) is internally provided in the space defined by the hole (6a) and the notch (2a1) of the stator (2a), and the upright part (7a2). Is located in the locking notch (6c) of the shell (6), and the other end is internally provided in the lower recess (1a) of the closed container (1). (7b)
Is a second elastic body mounted between the outer peripheral upper part of the stator (2a) of the electric element (2) and the side surface of the closed container (1) facing the upper part, and in this embodiment, one end A large-diameter portion (7b1) having a diameter larger than the diameter of the hole (6b) of the shell (6) and extending in the axial direction from the large-diameter portion (7b1), and the distance L is the locking notch (6c). ), A coil spring having a standing portion (7b2) longer than the distance in (3) and having a diameter at the other end larger than the diameter of the recess (1b) of the closed container (1) is used, and the upper hole of the shell (6) A large diameter portion (7b1) is provided inside a space defined by the hole (6b) and the cutout portion (2a2) of the stator (2a) by aligning the center of the (6b) with the axis, and the upright portion ( 7b2) is located in the locking notch (6b) of the shell (6), and the other end is internally provided in the upper recess (1b) of the closed container (1). , And the and the first elastic member (7a) and exits the inner body in the vertical direction and the middle hanging support coaxially to said closed container (1).

Next, how to attach the first and second elastic bodies (7a) and (7b) in the compressor configured as described above will be described. The shell (6) is attached to the electric element (2) with the compression element (3) fitted to the outer peripheral surface of the lower bearing (3c) forming a part of the electric element (2). At this time, the holes (6a) (6b) of the shell (6) are cut into the notches (2a1) (2a2) of the stator (2a).
Each of them is attached corresponding to the above, and a space portion is formed. The first and second elastic bodies (7a) (7b) are provided in these spaces.
Insert the large-diameter part (7a1) (7b1) of the upright part (7a2) (7b
2) is passed through the notches (6c) (6d) for locking of the shell (6). Then, since the winding diameters of the large diameter portions (7a1) (7b1) are formed larger than the diameter of the space portion, the spring force of the first and second elastic bodies (7a) (7b) fixes the space inside the space portion. In addition, since the distance L in the standing portions (7a2) (7b2) is formed larger than the distance in the locking notches (7a2) (7b2), the standing portions (6c) (6d) are engaged by the spring force. Locked in the stop notches (6c) (6d). On the other hand, in this manner, with the first and second elastic bodies (7a) and (7b) attached to the inner body, the inner body is inserted into the closed container (1), and the first and second elastic bodies are inserted. The other ends of the bodies (7a) and (7b) are respectively placed in the recesses (1a) and (1b) of the closed container (1). Then, since the winding diameters of the other ends of the first and second elastic bodies (7a) and (7b) are made larger than the diameters of the recesses (1a) and (1b) of the closed container (1), the first and second Elastic body (7a) (7b)
The other end is engaged and supported by the recesses (1a) and (1b) by the spring force. As a result, one ends of the first and second elastic bodies (7a) (7b) are connected to the holes (6a) (6) of the shell (6).
b) part and the other ends are respectively engaged with the recesses (1a) (1b) of the closed container (1) to close the inner body having the electric element (2) and the compression element (3). The first and second elastic bodies (7a) and (7b) elastically support the inside of (1).

With this configuration, the same effect as that of the first embodiment is obtained, and the stator (2a) and the compression element (3) of the electric element (2) vibrate during operation or transportation. Also, since both ends of the first and second elastic bodies (7a, 7b) are fixed, respectively, the first and second elastic bodies (7
a) It is possible to prevent abrasion due to friction between the (7b) and the stator (2a) and the generation of chatter noise, and to perform the vibration damping function of the compressor.

Although the fifth embodiment has been described as applied to a horizontal hermetic electric compressor, it may be applied to a vertical hermetic electric compressor. In this case, three or more elastic bodies are provided. If it is provided in the same manner as the fifth embodiment, the same effect can be obtained.

12 and 13 show a sixth embodiment of the present invention, in which (1) is a hole (1) in the lower and upper portions of the side surface.
c) An airtight container in which (1d) is formed, (2) is an electric element contained in the airtight container, and includes a stator (2a), a rotor (2b) arranged in the stator (2a), and It has a crankshaft (2c) mounted on a rotor (2b), and the crankshaft (2c) is arranged in the horizontal direction inside the hermetically sealed container (1), and the stator (2a). Notches (2a1) (2a2) are formed on the outer peripheral surface of the closed container (1) at positions facing the holes (1c) (1d).
(3) is a compression element mounted on one end surface of the electric element (2) and driven by the crankshaft (2c), and is a sylinder (3) mounted on the crankshaft (2c) of the electric element (2).
a) and the upper and lower bearings (3b) mounted on both end faces of this cylinder (3a) to support the crankshaft (2c).
(3c), and the electric element (2) constitutes an internal body which is a main element. (6) is a cylindrical shell fitted and fixed to the outer peripheral surface of the electric element (2), that is, the outer peripheral surfaces of the stator (2a) and the lower bearing (3c). Lower holes (6a) (6b) are formed at positions corresponding to the upper holes (1c) (1d), respectively, and the cutout portions (upper holes (6a) (6b) and the stator (2a) below the lower holes (6a) (6b)) 2a1) and (2a2) form a space, and the centers of these holes (6a) and (6b) pass through the center of gravity of the internal body having the electric element (2) and the compression element (3). It is located on an extension of the vertical diameter of element (2). (7a)
Is a first elastic body mounted between the outer peripheral lower portion of the stator (2a) of the electric element (2) and the side surface of the closed container (1) facing the lower portion, and in this embodiment, a coil A spring is used, the center of the shell (6) is aligned with the axial center, and one end is internally provided in the space defined by the hole (6a) and the notch (3a) of the stator (3a).
The other end is passed through the lower hole (1c) of the closed container (1). (7b) is a second elastic body mounted between the outer peripheral upper part of the stator (2a) of the electric element (2) and the side surface of the closed container (1) facing the upper part,
In this embodiment, a coil spring is used, and the center of the upper hole (6b) of the shell (6) is aligned with the axis of the shell (6b) and the notch (3a2) of the stator (3a). ) And one end is internally provided in the space part and the other end is penetrated by the upper hole (1d) of the closed container (1), and the upper and lower parts are made up and down with the first elastic body (7a). From the direction, the inner body is concentrically suspended and supported in the upper closed container (1). (8) (9) is a discharge pipe and a suction pipe constructed in the same manner as the fourth embodiment shown in FIG. 6, (10) is a hole (1c) (1d) at the bottom of the closed container (1). Is a cylindrical sealing body that covers the outside from the outside and presses the other ends of the first and second elastic bodies (7a) and (7b), and is fitted to the outer peripheral surface of the closed container (1) by circumferential welding. The recess (10a) is fixed at a position facing the holes (1c) and (1d) of the closed container (1).
(10b) is formed.

Next, how to attach the first and second elastic bodies (7a) and (7b) in the compressor configured as described above will be described. The electric element (2) with the compression element (3) attached is fitted to the outer peripheral surfaces of the stator (2a) and the upper bearing (3b) of the electric element (2), and the shell (6) is attached to fix the inner body. The holes (6a) (6b) of the inner shell (6) of the closed container (1) are arranged so as to face the holes (1c) (1d). After that, the first and second elastic bodies (7a) and (7b) are placed in the holes (1c) of the closed container (1).
(1d) Inserted from each, one end is the stator (2)
Notches (2a) (2b) and holes (6a) (6b) in shell (6)
And engage with the space formed by. On the other hand, like this,
With the first and second elastic bodies (7a) (7b) attached to the inner body, the sealing body (10) is inserted along the outer peripheral surface of the closed container (1) to form the recesses (10a) (10b). ) Are respectively located in the holes (1c) (1d) of the closed container (1). Then, the other ends of the first and second elastic bodies (7a) and (7b) are respectively located in the recesses (10a) and (10b) of the sealing body (10).
Then, the sealed body (10) is circumferentially welded to the outer peripheral surface of the closed container (1). As a result, the first and second elastic bodies (7a) (7b)
Has one end engaged with the holes (6a) (6b) of the shell (6) and the other ends respectively with the recesses (10a) (10b) of the sealing body (10).
The first and second elastic bodies (7a) and (7b) elastically support the inner body having the electric element (2) and the compression element (3) by being engaged with the inside of the closed container (1).

In the compressor configured as described above, the same effect as that of the first embodiment can be obtained, and the assemblability of the first and second elastic bodies (7a) and (7b) is good.

14 to 18 show a seventh embodiment of the present invention, which is different from the sixth embodiment described above in the notch portions (2a1) (2a2) in the stator (2a) of the electric element (2). ) And the holes (6a) (6b) of the shell (6) respectively, the inner caps (11a) (11b) are mounted in the respective space portions, and the recesses (10a) (10b) of the sealing body (10) are mounted. Outer cap on (12a)
(12b) is attached respectively. That is, the inner caps (11a) (11b) have a bottomed cylindrical shape as shown in FIG. 15, and the outer caps (12a) (12b)
b) is the first and second elastic bodies (7a) as shown in FIG.
Base parts (12a2) arranged in the respective hollow parts of (7b)
(1b2) and this base (12a2) (12b2) are formed integrally with each other and are in contact with the other ends of the first and second elastic bodies (7a) and (7b) respectively, and the recess (10a) of the sealing body (10). It has a substantially T-shaped cross section having abutting portions (12a1) and (12b1) respectively in contact with (10b).

With this structure, the same effect as that of the sixth embodiment is obtained, and as shown in FIG. 17, the first and second elastic bodies (7a) and (7b) and the inner and outer caps are formed. When installing (11a) (11b) (12a) (12b), the tips of the bases (12a2) (12b2) of the outer caps (12a) (12b) and the bottoms of the notches (2a1) (2a2) of the stator (2a) , A gap v between the outer surfaces of the first and second elastic bodies (7a) (7b) and the inner side surfaces of the inner caps (11a) (11b), and the first and second
Inner surface of elastic body (7a) (7b) and outer cap (12a) (1
2b) is attached so that it can be arranged with a gap w between the outer surface of the bases (12a) (12b) of 2b), so that the contraction displacement of the first and second elastic bodies (7a) (7b) is smaller than that of the gap u. In addition to being limited to the range, the lateral displacement is limited to the range of the sum of the gap v and the gap w as shown in FIG.
This has the effect of protecting the first and second elastic bodies (7a, 7b) from being deformed or damaged when subjected to vibration or impact during transportation.

Next, the assembling method of the seventh embodiment will be described with reference to FIGS. 19 to 23. First, as shown in FIG. 19, the electric element (2) with the compression element (3) attached is fitted to the outer peripheral surfaces of the stator (2a) and the upper bearing (3c) of the electric element (2). Install the shell (6). At this time,
The holes (6a) (6b) of the shell (6) are attached to the notches (2a1) (2a2) of the stator (2a) so as to form spaces, and the inner caps (11a) are formed in these spaces. (1
Insert and fix 1b). Then, the inner body thus assembled is inserted from the opening of the main body of the closed container (1) having one end opened, and the inner caps (11a) (11b) are inserted into the holes (1c) (1d) of the closed container (1). ), The inner body is disposed inside the main body of the closed container (1). Next, as shown in FIG. 20, the base portions (12a2) (12b2) of the outer caps (12a) (12b) are inserted into the hollow portions of the first and second elastic bodies (7a) (7b), and this state As shown in FIG. 21, the first and second elastic bodies (7) are inserted through the holes (1c) and (1d) of the closed container (1).
Push one end of a) (7b) so that it abuts on the bottom surface of the inner caps (11a) (11b). On the other hand, one end of the sealing body (10) is inserted into the open end of the main body of the closed container (1) so that the sealing body (10) can slide laterally on the outer peripheral surface of the main body of the closed container (1). Leave. Next, as shown in FIG. 22, the sealing body (10) is slid on the outer peripheral surface of the main body of the hermetically sealed container (1) toward the holes (1c) and (1d) to remove the sealing body (10). One end of the outer cap (11a) (11b) abutment part (11a1) (11
Make contact with the outer surface of b1). Then, as shown in FIG. 23, the sealing body (10) is further slid to form the recess (10) of the sealing body (10).
a) (10b) and outer cap (12a) (12b) contact part (12
Insert a2) (12b2). In this state, the periphery of the sealing body (10) is fixed to the outer peripheral surface of the closed container (1) by welding and is hermetically sealed. afterwards. Airtight container (1)
The assembly is completed by hermetically sealing the opening of the main body with the lid. According to this assembly method, the first and second elastic bodies (7a, 7b) are attached to the inner and outer caps (11
a) (11b) (12a) (12b) scissors, while pushing the holes (1c) (1d) through the closed container (1),
The first and second elastic bodies are obtained by sliding the sealing body (10) on the outer peripheral surface of the closed container (1) and contacting the contact portions (12a2) (12b2) of the outer caps (12a) (12b). (7a) and (7b) can be incorporated, and the assembly is very easy.

FIGS. 24 to 27 show the eighth embodiment of the present invention, and the outer cap (12
A) and (12b) are changed to outer cap portions (13a) and (13b) and stoppers (14a) and (14b). That is, as shown in FIG. 24, the outer cap portions (13a) and (13b) are the first
And a lower first tubular portion (13a1) (13b1) in which the other ends of the second elastic bodies (7a) (7b) are provided, and the first tubular portion (13a1)
(13b1) has a structure including a second cylindrical portion (13a2) (13b2) having a larger diameter, and the stoppers (14a) and (14b) have one end abutting the outer peripheral surface of the shell (6) to And the second elastic body (7a) (7b) is surrounded and has a tubular shape having a diameter larger than that of the first tubular portion (13a1) (13b1) and smaller than that of the second tubular portion (13a2) (13b2). .

The compressor configured as described above also has the same effect as that of the seventh embodiment. That is, the inner body having the electric element (2) and the compression element (3) elastically supports the first and second elastic bodies (7a) and (7b) inside the closed container (1), and the inner body vibrates. Transmission to the airtight container (1) is attenuated, and furthermore, the first and second elastic bodies (7a)
As shown in FIG. 26, the contraction displacement of (7b) is caused by the stepped portions of the second tubular portions (13a2) (13b2) of the outer cap portions (13a) (13b) and the other ends of the stoppers (14a) (14b). Is limited within the range of the clearance t, and for lateral displacement, as shown in FIG. 27, the second tubular portion (13a2) of the outer caps (13a) (13b)
It is limited to within the gap s between the inner peripheral surface of (13b2) and the outer peripheral surfaces of the stoppers (14a) and (14b), and the first and second elastic bodies (7a) are subjected to vibration or impact during transportation. ) (7b) can be protected from being deformed or damaged.

28 to 30 show a ninth embodiment of the present invention, which is the first and second embodiments of the first to eighth embodiments.
The elastic bodies (7a) and (7b) are configured as shown in FIGS. 28 and 29. That is, the second elastic body (7b) arranged above the natural length l1 of the first elastic body (7a) arranged below the inner body having the electric element (2) and the compression element (3).
When the inner body is elastically supported in the closed container (1) by the first and second elastic bodies (7a) and (7b), the first and second elastic bodies ( 7a) and (7b) have the same length. The requirements other than the natural length, the winding diameter, the spring constant, and the like are the same.

In the case of such a configuration, when F1 and F2 in the vertical direction are applied to the inner body as shown in FIG. 30 (b), there is no vibration coupling in either case. Further, as shown in FIG. 30 (c), when lateral forces F1 and F2 are applied, the force exerted from the first and second elastic bodies (7a) and (7b) on the inner body (F1 = F
Since 2) is the same, vibration due to the internal body does not couple to rotational displacement.

Further, even when the internal unit is displaced in the rotational direction as shown in FIG. 30 (d), the first and second elastic bodies (7a)
Since the force (F1 = F2) exerted from (7b) on the internal body is the same, coupling in the other direction of vibration does not occur.

Therefore, in the ninth embodiment, the first to eighth
In addition to the effects of each of the embodiments, the vibrations from the inner body in various directions are coupled by the vibrations in the other direction by the first and second elastic bodies (7a) and (7b). It also has the effect of not occurring.

31 to 33 show a tenth embodiment of the present invention. Compared to the ninth embodiment, the first and second elastic bodies (7
a) (7b) as shown in FIG. 31 and FIG. 32, the spring constant is the same as the natural length, and the spring constant K1 of the first elastic body (7a) located in the lower part of the inner body is the second elastic coefficient. It is larger than the spring constant K2 of the body (7b).

Even with this structure, when vertical forces F1 and F2 are applied to the internal body as shown in FIG. 33 (b),
As in the ninth embodiment, there is no vibration coupling. However, the 33rd
When lateral and rotational displacements are applied as shown in FIGS. (C) and 33 (d), the first and second elastic bodies (7a, 7b) exert an influence on the internal body ( Since F1 ≠ F2) is different, this does not cause a problem in normal operation where some vibration displacement occurs.

34 to 38 show the 11th embodiment of the present invention. Fig. 34 shows the jig for assembling the hermetic electric compressor (1
5) is a cross-sectional view of FIG.
6) is smaller than the other end of the electric element (2) connected to the first large-diameter portion (16a) and the lower part of the first large-diameter portion (16a) that are larger in diameter than the other end of the electric element (2). A first small diameter portion (16b) of the closed portion, and the other end of the electric element (2) is disposed in the first large diameter portion (16a), and (17) is a closed container (1). A second small-diameter portion (17a) having a diameter smaller than that of the opening of the main body, and a sealing body (10) connected to the lower portion of the second small-diameter portion (17a) and having a diameter larger than the opening diameter of the main body of the closed container (1). A second large diameter portion (17b) having a diameter smaller than that of the above, and having the same axis as the recess (16), and the opening of the main body of the closed container (1) in the second small diameter portion (17a). It is a stepped portion in which the end is disposed and the sealing body (10) is disposed in the second large diameter portion (17b).

Next, an assembling method of the hermetic electric compressor using the assembling jig (15) configured as described above will be described with reference to FIGS. 35 to 38. First, as shown in FIG. 35, the jig (15)
The sealing body (10) is inserted and placed in the second large diameter portion (17b) of the step portion (17). On the other hand, the compression element (3) is connected to the electric element (2).
The shell (6) is attached to the mounted one by fitting the stator (2a) of the electric element (2) and the outer peripheral surfaces of the upper bearing (3c). At this time, the holes (6a) and (6b) of the shell (6) are attached to the notches (2a1) and (2a2) of the stator (2a) so as to form spaces, and the inner caps are formed in these spaces. Insert and fix (11a) and (11b). Then, as shown in FIG. 36, the other end of the electric element (2) is placed inside the first large-diameter portion (16a) of the recess (16) of the jig (15). Set up. Thereby, the inner body is held by the jig (15). Then, in this state, the main body of the closed container (1) surrounds the inner body from its opening, and the open end of the main body is connected to the second portion of the step (17) of the jig (15).
The small diameter portion (17a) is arranged. Thereby, the axis of the inner body is aligned with the axis of the closed container (1), and the inner caps (11a) (11b) are arranged so as to face the holes (1c) (1d) of the closed container (1), respectively. Will be done. In this state, the base portions (12a1) (12b1) of the outer caps (12a) (12b) are inserted into the hollow portions of the first and second elastic bodies (7a) (7b), and in this state, the closed container (1) Through the holes (1c) (1d) and push one ends of the first and second elastic bodies (7a) (7b) into contact with the bottom surfaces of the inner caps (11a) (11b), and also seal them. One end of the stopper (10) is a closed container (1)
It has been inserted into the open end of the body. next,
In this state, as shown in FIG. 37, the sealing body (10) is slid along the outer peripheral surface of the main body of the closed container (1) in the direction of arrow A in the figure, and one end of the sealing body (10) is outside. The caps (11a) (11b) are brought into contact with the outer surfaces of the contact portions (11a2) (11b2). Then, as shown in FIG. 38, the sealing body (10) is slid so that the recesses (10a) (10b) of the sealing body (10) come into contact with the contact portions (12a2) () of the outer caps (12a) (12b). 12b2) is inserted. In this state, the periphery of the sealing body (10) is fixed to the outer peripheral surface of the closed container (1) by welding and is hermetically sealed. In this way, the inner body elastically supported by the first and second elastic bodies inside the closed container (1) main body is removed from the jig (15), and the opening of the main body of the closed container (1) is covered. The assembly is completed by hermetically sealing at.

According to this assembling method, the inner body having the electric element (2) and the compression element (3) can be accurately positioned inside the closed container (1) by the jig (15), and The first and second elastic bodies (7a) (7b) are sandwiched between the inner and outer caps (11a) (11b) (12a) (12b), and the holes (1c) (1d) are passed through the closed container (1). While pushing it in, the sealing body (10) slides on the outer peripheral surface of the closed container (1) to contact the contact portions (12a) of the outer caps (12a) (12b).
2) Can easily contact (12b2). As a result, the assembly is very easy.

EFFECTS OF THE INVENTION Since the present invention is configured by providing a plurality of elastic bodies between the outer peripheral surface of the stator of the electric element and the side surface of the hermetic container as described above, the electric power to the hermetic container is reduced. This has the effect of reducing the size without damaging the damping of vibrations from the elements and the like.

Further, in the second and third inventions, a hole through which an end of the elastic body penetrates is provided at a position where the elastic body is arranged on a side surface of the shell or the hermetically sealed container mounted on the stator of the electric element. Therefore, the elastic body can be easily mounted, and the number of parts is small, and the assemblability is improved.

Further, in the fourth invention, since the outer cap, which is the restricting body having the base portion inserted into the elastic body, is also provided, the contraction displacement of the elastic body is suppressed to prevent the elastic body from being destroyed. It has the effect of suppressing.

Furthermore, in the fifth aspect of the invention, there is an effect that it is possible to obtain an assembling jig with which the hermetic electric compressor as described above can be assembled very simply and accurately.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention.
The figure is a cross-sectional view, and FIGS. 2 and 3 are A of FIG.
-A sectional view and BB sectional view, FIG. 4, FIG. 5 and FIG.
FIG. 7 is a cross sectional view showing the second, third and fourth embodiments of the present invention, FIGS. 7 to 11 show a fifth embodiment of the present invention, and FIG. FIG. 8 is a longitudinal sectional view, 9
The figure shows the top view of the main part of the shell (6), FIG. 10 and FIG.
The figures are a front view and a side view showing the elastic bodies (7a) and (7b), respectively, and FIGS. 12 and 13 are a transverse sectional view showing a sixth embodiment of the present invention and an AA cross section of FIG. 12, respectively. Figure, Figure 14 ~
FIG. 18 shows a seventh embodiment of the present invention, FIG. 14 is a transverse sectional view, FIG. 15 is a perspective view and a sectional view showing the inner caps (11a) (11b), and FIG. 16 is a restricting body. There is an outer cap (12
a) (12b) is a perspective view and a cross-sectional view, FIGS. 17 and 18 are main-part cross-sectional views showing a state in which the elastic bodies (7a) and (7b) are mounted, and FIGS. 19 to 23 are respectively. Sectional views showing the assembling method of the seventh embodiment in the order of steps, FIGS. 24 to 27 show the eighth embodiment of the present invention, and FIG. 24 shows the outer caps (13a) (13b). FIG. 25 is a perspective view and a sectional view, and FIG. 25 is a stopper (14a) (14b) constituting a restricting body.
FIG. 26 and FIG. 27 are perspective views and cross-sectional views, respectively, and FIG. 26 and FIG.
28 to 30 show a ninth embodiment of the present invention,
Figures and 29 are front views showing the first and second elastic bodies (7a) and (7b), respectively, and Figure 30 shows a state in which forces (F1, F2) exerted by the elastic bodies (7a) and (7b) exert. FIGS. 31 to 33 show a tenth embodiment of the present invention, and FIGS. 31 and 32 are front views showing the first and second elastic bodies (7a) and (7b), respectively. FIG. 33 is a view showing a state in which forces (F1, F2) exerted by elastic bodies (7a) and (7b) are exerted, and FIGS.
FIG. 34 is a sectional view showing an assembling jig (15), FIGS. 35 to 38 are sectional views showing the assembling method in the order of steps, and FIG. 39 is a conventional vertical type hermetic seal. It is a longitudinal cross-sectional view showing a type electric compressor. In the figure, (1) is a closed container, (2) is an electric element,
(3) is a compression element, (6) is a shell, (7a) and (7b) are first and second elastic bodies, (8) is a discharge pipe, (10) is a sealing body, (11a) and (11b). Is the inner cap, (12a) (12b) is the outer cap, (13a) (13b) is the outer cap, (14
a) (14b) is a stopper, and (15) is an assembly jig. The same reference numerals in the drawings indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Shirato 3-18-1, Oga, Shizuoka-shi, Shizuoka Mitsubishi Electric Corporation Shizuoka Plant (72) Masatoshi Sakai 3-18, Oka, Shizuoka-shi, Shizuoka No. 1 Mitsubishi Electric Co., Ltd. Shizuoka Works (72) Inventor Koichi Sato 3-18-1, Oga Shizuoka City, Shizuoka Prefecture Mitsubishi Electric Co., Ltd. Shizuoka Works

Claims (5)

[Claims] 1. A hermetically sealed container, a stator, a rotor disposed in the stator, and a crankshaft mounted to the rotor, the crankshaft being horizontal and disposed in the hermetically sealed container. An electric element, a compression element mounted on one end surface of the electric element in the horizontal direction and driven by the crankshaft, between an outer peripheral lower portion of a stator of the electric element and a side surface of the closed container facing the lower portion. The mounted first elastic body, the second elastic body mounted between the outer peripheral upper portion of the stator of the electric element and the side surface of the closed container facing the upper portion, and one end on the side end surface of the compression element. A discharge pipe that is connected and is disposed so as to penetrate through the side end surface of the closed container facing the side end surface of the compression element, and has an elastic function between the side end surface of the compression element and the side end surface of the closed container. Closed type electric compression with . 2. A hermetically sealed container, a substantially cylindrical stator, a rotor disposed in the stator, and a crankshaft mounted to the rotor, and an electric element disposed in the hermetically sealed container. A compression element that is mounted on one end surface of the electric element and is driven by the crankshaft, a cylindrical shell that is fitted to the outer peripheral surface of the stator of the electric element, and has a plurality of holes formed in the circumferential direction, one end Is inside the hole of the shell, and the other end is provided with the plurality of elastic bodies mounted in the closed container facing the hole. 3. An electric element having a substantially cylindrical stator, a rotor disposed in the stator, and a crankshaft attached to the rotor, the electric element being attached to one end surface of the electric element,
The compression element driven by the crankshaft, the electric element and the compression element are disposed inside, and a hermetically sealed container having a plurality of holes circumferentially formed on a side surface of the electric element facing the outer peripheral surface of the stator. , One end penetrates the hole of this closed container,
A hermetically sealed type having a plurality of elastic bodies mounted on the outer peripheral surface of the stator of the electric element, the other end of which faces the hole, and a sealing body which covers the hole of the hermetic container from the outside and presses one end of the elastic body. Electric compressor. 4. A hermetic container, a substantially cylindrical stator, a rotor arranged in the stator, and a crankshaft mounted on the rotor, and an electric element arranged in the hermetic container, A plurality of compression elements are mounted on one end face of the electric element and are driven by the crankshaft, and are arranged in the circumferential direction between the outer peripheral surface of the stator of the electric element and the side surface of the closed container facing the outer peripheral surface. A plurality of hollow elastic bodies that are provided to elastically support the electric element and the compression element, and a closed type body that is provided inside the elastic body and that has a limiting body that limits the axial contraction displacement of the elastic body. Electric compressor. 5. A first large diameter portion having a diameter larger than the diameter of the other end of the electric element having a compression element attached to one end, and a first diameter smaller than the other end of the electric element connected to the lower part of the large diameter portion. Of the main body of the closed container having a recess having a small diameter portion, the other end of the electric element being disposed in the first large diameter portion, a main body having an opening at one end, and a lid closing the opening of the main body. A second small-diameter portion having a diameter smaller than the opening diameter is connected to the lower portion and has a diameter larger than the opening diameter of the main body.
And a large-diameter part of the hermetically sealed part having the same axial center as the concave part, and a second small-diameter part having a step part in which the open end of the main body is arranged. Jig.