JPH0835491A - Scroll compressor - Google Patents

Abstract

PURPOSE:To improve productivity by forming positioning holes for engaging with engaging projections provided on a pallet staying outside at the time of assembly on support legs for fixing the shell bottom cover of a compressor to the outside by cutting off those holes from fixing holes. CONSTITUTION:A scroll compressor stores a compressor part consisting of fix and swing scrolls in a cylindrical shell main body 11 and integrally includes support legs 10a in which fixing holes 10c for fixing the shell main body 11 to an outside are formed on a shell bottom cover 10 provided on the lower end of the shell main body 11. In this case, positioning holes 10d are formed on the shell bottom cover 10 so as to be cut off from the fixing holes 10c. These positioning holes 10d are formed in rectangular shapes extending in the radial directions of the support legs 10a and provided in prescribed shapes at prescribed positions even when the diameters of the fixing holes 10c are different per the kind of the compressor. The shell main body 11 can be positioned in such a way that the positioning holes 10d are engaged with engaging projections on a pallet on which the compressor is placed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor used in refrigerators, air conditioners and the like.

[0002]

2. Description of the Related Art FIG. 16 is a sectional view of a conventional scroll compressor. In the figure, 10 is a shell bottom lid, 11 is a cylindrical shell body mounted on the shell bottom lid 10,
Reference numeral 12 denotes a shell upper lid having an inverted U-shaped cross section that is hermetically fitted in the upper end opening of the shell body 11, and these constitute a shell that is a closed container.

Reference numeral 1 denotes a fixed scroll in which a spiral protrusion 1b is provided on a base plate 1a, and 2 denotes a spiral protrusion 2 on a base plate 2a.
It is an orbiting scroll in which b is projected. The fixed scroll 1 and the orbiting scroll 2 form a compression chamber 4 by combining the respective spiral projections 1b and 2b. Further, 3 is a discharge port formed in the base plate 1a, 7 is a frame fixed to the inner surface of the peripheral wall of the shell body 11 by shrink fitting, and the frame 7 fixedly supports the fixed scroll 1 at its upper end surface and Swing scroll 2 accommodated
Is slidably supported.

Reference numeral 6 denotes a main shaft extending in the cylinder center direction of the shell body 11 and swingably connected to the swing scroll 2 at the upper end thereof.
Reference numeral 14 denotes a subframe fixed to the inner surface of the peripheral wall of the shell body 11 by welding, and the main shaft 6 has a bearing 13 formed on the frame 7 and a bearing 1 formed on the subframe 14.
5 is rotatably supported. Reference numeral 8 denotes an electric motor rotor which is circumferentially provided in the middle portion of the main shaft 6 and has a lower end surface provided with a downwardly directed balancer 8a, and 9 is an electric motor stator which is fixed to the inner surface of the peripheral wall of the shell body 11 and surrounds the electric motor rotor 8.

Further, 16 is a terminal block attached to the peripheral wall of the shell body 11, 17 is a pump element attached to the sub-frame 14, 18 is a low pressure chamber formed below the frame 7, and 19 is above the frame 7. , 20 is a high pressure chamber, 20 is a refrigerant suction pipe connected to the peripheral wall of the shell body 11, 21 is a refrigerant discharge pipe connected to the shell upper lid 12,
Reference numeral 0a is a support foot provided on the shell bottom cover 10.

In such a scroll compressor,
When electric power is supplied to the electric motor to rotate the main shaft 6 together with the electric motor rotor 8, the orbiting scroll 2 is caused to orbit,
The fixed scroll 1 and the orbiting scroll 2 perform a compression operation based on the well-known compression principle. As a result, the low pressure chamber 18 is supplied from the outside through the refrigerant suction pipe 20.
The low-pressure gas refrigerant introduced therein is sucked into the compression chamber 4, is compressed and becomes a high-pressure gas refrigerant, is discharged into the high-pressure chamber 19 through the discharge port 3, and is further discharged to the outside through the refrigerant discharge pipe 21. It The above is the outline of the operation.

Next, an assembling procedure of the scroll compressor at the time of production will be described with reference to FIGS. 17 to 23 together with a detailed structure and the like. First, the frame 7 and the electric motor stator 9 are shrink-fitted to the shell body 11. As shown in FIG. 17, a stepped surface 7a is formed on the frame 7, and a stepped surface 11a that engages with the stepped surface 7a is formed on the shell body 11, so that the low pressure chamber 18 and the high pressure chamber 19 are formed. The thrust force applied to the frame 7 due to the pressure difference between and is received by the stepped surface 11a so that the frame 7 does not shift axially within the shell body 11.

Further, the main shaft 6 and the electric motor rotor 8 are fixed. At this time, a pallet 45 as shown in FIG. 19 is generally used, and the lower end surface 8c of the balancer 8a of the electric motor rotor 8 shown in FIG. While being supported by 45b,
The motor rotor 8 is placed on the pallet 45 so that the lower end surface 8b (of the end ring) of the motor rotor 8 is supported by the high pin 45c protruding from the pallet 45, and the spindle 6 is press-fitted in this state. Alternatively, fix it by shrink fitting. Incidentally, 45d is a through hole for inserting the main shaft 6.

Then, the shell body 11 to which the frame 7 and the electric motor stator 9 are attached as described above is inverted, and the main shaft 6 around which the electric motor rotor 8 is provided is inserted into the bearing 13 of the frame 7 as described above. , The bearing 13 and the bearing 15 so that the misalignment and inclination of the main shaft 6 are within a predetermined range.
The sub-frame 14 is fixed to the shell body 11 by arc spot welding while adjusting the positional relationship with (see FIG. 20).

Next, the pump element 17 is attached to the sub-frame 14.
The orbiting scroll 2 and the fixed scroll 1 are attached to the frame 7, respectively. Then, the shell upper lid 12 and the shell bottom lid 10 are fixed to the shell main body 11 by welding and hermetically sealed. As shown in FIG. 21, the shell body 11 and the shell upper lid 12 are welded at the welded portion 22 over the entire circumference, so that foreign matter such as spatter generated during this welding does not fall into the shell body 11. To
The fitting portion 12a of the shell upper lid 12 with the shell body 11 is
It is formed to be long in the vertical direction.

Also, attached to the shell bottom lid 10,
Alternatively, the support foot 1 formed integrally with the shell bottom cover 10
According to the diameter of the shell, 0a is formed to slightly project radially outward from the shell bottom cover 10 as shown in FIG. The support foot 10a has a flat portion 10b and a fixing hole 10c formed in the flat portion 10b. The fixing hole 10c has a rubber bush, a spring or the like for absorbing vibration during operation of the compressor. The vibration absorbing means (not shown) is attached, and the shell bottom lid 10 is fixed to the outside via the vibration absorbing means and the support foot 10a.

After the shell body 11 and the shell bottom lid 10 are welded, the discharge port 5 is attached, the terminal block 16 is attached, the power supply lead wire and the thermo lead wire (not shown) 16 from the motor stator 9 are attached. Connection, shell air tightness test, etc. The above-mentioned work is generally performed by a flow work using a pallet 44 as shown in FIG.

[0013]

The conventional scroll compressor as described above has the following problems related to its productivity. That is, when the model of the scroll compressor is different, the height of the balancer 8a (the lower end surface 8 of the motor rotor 8)
The distance from b to the lower end surface 8c of the balancer 8a may be different, and if one type of pallet 45 is used, the electric motor rotor 8 may be tilted and supported, resulting in defective insertion of the main shaft 6. is there. Therefore, conventionally, a plurality of types of pallets 45 having different heights of the pins 45a to 45c according to the height of the balancer 8a are prepared, and the pallets 45 are replaced every time the production model is changed. However, there is a problem in that the productivity of the scroll compressor is reduced due to the troublesome work.

Further, since the fitting portion 12a of the shell upper lid 12 with the shell body 11 is formed to be long in the vertical direction, when the shell upper lid 12 is fitted into the shell body 11,
The outer peripheral surface of the fitting portion 12a interferes with the inner peripheral surface of the shell body 11 to make fitting difficult, and it takes a lot of time to fit the fitting portion 12a to a regular position, resulting in low productivity of the scroll compressor. was there. In particular, when the roundness of the shell body 11 is low due to the hole processing for mounting the terminal block 16, the fitting tends to be difficult.

Further, in the flow work after the shell bottom lid 10 is attached to the shell body 11, the engaging protrusions (not shown) provided on the pallet 44 are engaged with the fixing holes 10c of the supporting feet 10a. The positioning of the pallet 44 and the support foot 10a was performed, but the position and diameter of the fixing hole 10c may be different depending on the model of the scroll compressor. Conventionally, depending on the fixing hole 10c having different position and diameter. Since multiple types of pallets 44 with different positions and diameters of engaging protrusions were prepared and the pallets 44 were replaced every time the production model changed, this took time and labor, and the productivity of the scroll compressor was low. There was a problem that

Further, the height of the shell main body 11 may differ depending on the model of the scroll compressor, but in order to keep the upper end position of the shell main body 11 constant for convenience of flow work,
Conventionally, a plurality of types of pallets 44 having different thicknesses were prepared according to the height of the shell body 11, and the pallets 44 were replaced every time the production model changed. There was a problem that the productivity of the machine became low.

Further, when connecting the power lead wire and the thermo lead wire from the motor stator 9 to the terminal block 16,
Conventionally, the power lead wire and the thermo lead wire were identified based on the color and wire number of each lead wire and connected to a specified terminal.Therefore, the wire type must be identified correctly to prevent misconnection. It is necessary to confirm whether or not the operation is being performed many times, which takes time and reduces the productivity of the scroll compressor.

Furthermore, conventionally, when the core stacking length of the motor stator 9 changes according to the difference in the output of the motor depending on the production model, the distance from the terminal block 16 to the upper end of the motor stator 9 changes. The lengths of the power supply lead wire and the thermo lead wire have to be adjusted each time according to the changing distance, which takes time and reduces the productivity of the scroll compressor.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a scroll compressor having high productivity.

[0020]

In order to achieve the above object, the present invention provides a cylindrical shell body, a shell bottom lid provided at the lower end of the shell body, and mutual spiral projections provided in the shell body. In a scroll compressor provided with a fixed scroll and an orbiting scroll that form a compression chamber by combining the above, and a support foot provided in the shell bottom lid and having a fixing hole for fixing the shell bottom lid to the outside, A first positioning hole that engages with an engaging protrusion provided on an external pallet during assembly is formed by cutting out from the fixing hole.

Further, a cylindrical shell body, a shell bottom lid provided at the lower end of the shell body, a fixed scroll and an orbiting scroll which are provided in the shell body and which form a compression chamber by combining mutually spiral projections. A scroll foot provided on the shell bottom lid and having support holes having fixing holes for fixing the shell bottom lid to the outside, in a support foot, engaging with an engaging projection provided on an external pallet during assembly. The matching second positioning hole is formed separately from the fixing hole.

Further, in addition to the above structure, a height adjusting spacer that engages with an engaging protrusion provided on an external pallet is detachably attached to the second positioning hole.

Further, a tubular shell main body, a fixed scroll and an orbiting scroll provided in the shell main body to form a compression chamber by combining mutually spiral projections, and an upper end portion extending in the cylinder center direction of the shell main body. A main shaft slidably connected to the orbiting scroll, an electric motor rotor provided around the main shaft with a downwardly facing balancer protruding, and an electric motor stator fixed to the shell body and surrounding the electric motor rotor. In the scroll compressor, a hole whose bottom surface matches the height of the lower end surface of the electric motor rotor is bored upward from the lower end surface of the balancer.

Further, the cylindrical shell body, the shell upper lid having an inverted U-shaped cross section which is hermetically fitted in the upper end opening of the shell body, and the spiral protrusions provided in the shell body are combined to form a compression chamber. In a scroll compressor having a fixed scroll and an orbiting scroll that form a shell, a relief surface is formed at the lower end portion of the outer peripheral surface of the shell upper lid that faces the inner peripheral surface of the shell body with a minute gap. is there.

Further, a tubular shell body, a fixed scroll and an orbiting scroll which are provided in the shell body to form a compression chamber by combining mutually spiral projections, and an upper end portion extending in the cylinder center direction of the shell body. A main shaft slidably connected to the orbiting scroll, an electric motor rotor provided around the main shaft, an electric motor stator fixed to the inner peripheral surface of the shell body and surrounding the electric motor rotor, and taken out from the upper end of the electric motor stator. In a scroll compressor having a power lead wire and a thermo lead wire connected to a terminal block provided on the peripheral wall of the shell body at the tip, a power lead wire take-out portion,
The take-out portion of the thermo-lead wire is located separately and independently in the circumferential direction.

Further, a tubular shell main body, a fixed scroll and an orbiting scroll which are provided in the shell main body to form a compression chamber by combining mutually spiral projections, and an upper end portion extending in the cylinder center direction of the shell main body. A main shaft slidably connected to the orbiting scroll, an electric motor rotor provided around the main shaft, an electric motor stator fixed to the inner peripheral surface of the shell body and surrounding the electric motor rotor, and taken out from the upper end of the electric motor stator. In a scroll compressor equipped with a power lead wire and a thermo lead wire that are connected to the terminal block provided on the peripheral wall of the shell body at the tip, in the length from the take-out portion of the power lead wire to the tip and the take out of the thermo lead wire. The length from the part to the tip is set to a different length.

In addition to the above structure, the electric motor stator is fixed at a position where the distance from the terminal block to the upper end of the electric motor stator is a predetermined distance.

[0028]

In the scroll compressor according to the present invention, the support leg having the fixing hole is provided with the first positioning hole which is engaged with the engaging projection provided on the external pallet at the time of assembly and is cut out from the fixing hole. In this case, the pallet and the support foot are positioned by engaging the engaging protrusion with the first positioning hole.

Further, in the support foot having the fixing hole, the second positioning hole for engaging with the engaging projection provided on the external pallet at the time of assembling is formed independently of the fixing hole. By engaging the protrusion with the second positioning hole, the pallet and the support foot are positioned.

Further, in the second positioning hole, in which the height adjusting spacer that engages with the engaging projection provided on the external pallet is detachably attached, the height adjusting spacer prevents the height of the shell body from increasing. You can adjust the height.

Further, in the case where a hole whose bottom surface matches the height of the lower end surface of the electric motor rotor is bored upward from the lower end surface of the balancer, for example, at the time of assembling, the same hole is projected on the pallet. The motor rotor can be supported in an upright state by inserting one of the plurality of height pins and abutting the other pin against the lower end surface of the motor rotor.

Further, in the case where a corresponding relief surface is formed on the inner peripheral surface of the shell main body at a lower end portion of the outer peripheral surface of the shell upper cover with a minute gap therebetween, the shell upper cover is fitted into the upper end opening portion of the shell main body. At this time, the outer peripheral surface of the shell upper lid and the inner peripheral surface of the shell body are prevented from interfering with each other.

Further, in the case where the power supply lead wire take-out portion and the thermo lead wire take-out portion are arranged separately in the circumferential direction, the power lead wire and the thermo lead wire are distinguished by the position of the take-out portion. To be done.

If the length from the lead-out portion of the power supply lead wire to the tip and the length from the lead-out portion of the thermo-lead wire to the tip end are set to different lengths, the power lead wire is different depending on the length. And the thermo-lead are identified.

Further, if the electric motor stator is fixed at a position where the distance from the terminal block to the upper end of the electric motor stator is a predetermined distance, even if the core stacking length of the electric motor stator changes, the power supply lead wire and the thermostat There is no need to change the length of the lead wire.

[0036]

Embodiments of the present invention will be described below with reference to the drawings. In the following examples, the overall configuration of the scroll compressor is the same as that of the conventional example shown in FIG.
Overlapping illustrations are omitted.

Embodiment 1 1 is a plan view of a supporting foot according to a first embodiment of the present invention, and FIG. 2 is an enlarged view of a main part of FIG. In these figures, 10a is a support foot, 10b is a flat portion, 1
Reference numeral 0c denotes a fixing hole, and in addition to the constituent elements common to these conventional examples, in the present embodiment, the fixing hole 10c is cut out to form a first hole.
The positioning hole 10d is formed. The first positioning hole 10d has a rectangular shape extending in the radial direction of the support foot 10a, and the diameter of the fixing hole 10c varies depending on the model of the scroll compressor as shown by the solid line and the alternate long and short dash line in FIG. Even in the case where the center positions of the holes are the same, the first positioning hole 10d is provided at a predetermined position and in a predetermined shape.

Therefore, an engaging projection (not shown) engaging with the first positioning hole 10d is provided on the pallet on which the scroll compressor is mounted at the time of assembly, and the engaging projection and the first positioning hole 10d are provided. Pallet and support foot 1
0a, and by extension, the pallet and the shell bottom lid 10, the shell body 11, and the shell upper lid 12 can be positioned. For example, the refrigerant suction pipe 20,
It is possible to accurately determine the connection position of the refrigerant discharge pipe 21.

Further, one kind of pallet has a fixing hole 10c.
Since it can be commonly used for a plurality of types of scroll compressors having different diameters, the labor of replacing the pallet each time the production model changes can be saved, and the productivity of the scroll compressor improves. Further, the first positioning hole 1
Since 0d is formed by cutting out from the fixing hole 10c, the first positioning hole 10d is formed even if there is not enough space for forming another hole in the flat portion 10b of the support foot 10a.
Can be provided.

Example 2. FIG. 3 is a plan view of a main part of a support foot according to the second embodiment of the present invention. This embodiment is an example in which the center position and the diameter of the fixing hole 10c are different depending on the model of the scroll compressor, as shown by the solid line and the alternate long and short dash line in FIG. 3, and the first positioning hole 10d corresponds to the support foot 10a. Is formed by cutting out from the fixing hole 10c so as to have a rectangular diameter shape extending in a direction perpendicular to the radial direction of the fixing hole 10c, and the width z thereof has a minimum radius x of the fixing hole 10c, a maximum radius y thereof, When the center-to-center distance between the fixed hole 10c having a radius x and the fixed hole 10c having a radius y is set as w, z ≦ x + y−w is set. Even with this structure, the same effect as that of the first embodiment can be obtained.

Example 3. FIG. 4 is a plan view of a supporting leg according to the third embodiment of the present invention. In the figure, the solid line and the alternate long and short dash line show the supporting feet 10a of different sizes at the center O
The drawing shows the fixing holes 10 in the common region of the flat portion 10b of the foot drawn by the solid line and the alternate long and short dash line.
A second positioning hole 10e, which is independent of c, is provided.

Therefore, an engaging projection (not shown) engaging with the second positioning hole 10e is provided on the pallet on which the scroll compressor is mounted at the time of assembly, and the engaging projection and the second positioning hole 10e are provided. Pallet and support foot 1
0a, and by extension, the pallet and the shell bottom lid 10, the shell body 11, and the shell upper lid 12 can be positioned. For example, the refrigerant suction pipe 20,
It is possible to accurately determine the connection position of the refrigerant discharge pipe 21.

Further, one type of pallet has fixing holes 10c.
Since it can be commonly used for a plurality of types of scroll compressors having different diameters, the labor of replacing the pallet each time the production model changes can be saved, and the productivity of the scroll compressor improves. Further, the second positioning hole 1
Since 0e is formed separately from the fixing hole 10c, the supporting foot 10a generally formed by press working.
The fixing hole 10c and the second positioning hole 10
e can be provided with high precision, and the fixing hole 10c
The second positioning hole 10e does not adversely affect the fixed state when the scroll compressor is fixed by using the above, and the vertical vibration α and the shell generated during the operation of the compressor as shown in FIG. Vibration β in the tangential direction of the cylindrical portion of the body 11 and vibration γ in the radial direction can be absorbed in good balance by the vibration absorbing means (rubber bush, spring, etc.) attached to the support foot 10a using the fixing holes 10c.

Example 4. FIG. 6A shows a fourth embodiment of the present invention.
FIG. 6B is a cross-sectional view of a main part of a support foot and a height adjusting spacer according to FIG. 6, and FIG. 6B is a cross-sectional view showing a usage state of the height adjusting spacer. In this embodiment, in addition to the configuration of the third embodiment,
A height adjusting spacer 25 is attached to the second positioning hole 10e. The height adjusting spacer 25 is formed in a columnar shape having a diameter-expanded portion below, and an engaging hole 26 is formed in the bottom surface. The diameter M ₁ of the cylindrical portion is slightly smaller than the diameter L of the second positioning hole 10e, and the diameter M ₂ of the engaging hole 26 is substantially equal to the diameter L of the second positioning hole 10e.

This height adjusting spacer 25 is shown in FIG. 6 (b).
Is inserted into the second positioning hole 10e as shown in FIG.
When the engaging projection 44a of the pallet 44 is inserted into the engaging hole 26 and used, the support foot 10a is lifted up by the height indicated by the symbol h, so that the shell main body 11 has different heights. Even in the case of producing, the one type of pallet 44 can be commonly used, the labor of converting the pallet 44 every time the production model is changed is saved, and the productivity of the scroll compressor is further improved.

Example 5. FIG. 7A shows a fifth embodiment of the present invention.
FIG. 7B is a cross-sectional view of a main part of the support foot and a height adjusting spacer according to FIG. 7, and FIG. 7B is a cross-sectional view showing a usage state of the height adjusting spacer. In this embodiment, the height adjusting spacer 25
Is different from that of the fourth embodiment. That is, the height adjusting spacer 25 has a columnar portion having a diameter M ₃ slightly smaller than the diameter L in the upper part of the second positioning hole 10e,
It is formed so as to have an enlarged diameter portion below it and further to have a cylindrical portion below that which has a diameter M ₄ smaller than the diameter M ₃ .

This height adjusting spacer 25 is shown in FIG. 7 (b).
, The upper part is inserted into the second positioning hole 10e, and the lower part is the engaging projection 44 of the pallet 44.
When used by being inserted into the engagement hole 44b formed in a, the support foot 10a is lifted up by the height indicated by the symbol h, and the same effect as that of the fourth embodiment is obtained.

Example 6. FIG. 8 is a perspective view showing an electric motor rotor according to a sixth embodiment of the present invention in an inverted state, and FIG. 9 is a perspective view of a pallet used in the sixth embodiment. In FIG. 8, 2
Reference numeral 7 denotes a hole formed upward from the lower end surface 8c of the balancer 8a, and the height of the bottom surface 28 thereof matches the lower end surface 8b of (the end ring of) the electric motor rotor 8.

In this motor rotor 8, for example, as shown in FIG. 9, one of the pins (for example, pin 45g) has a hole in a pallet 45 on which a plurality of pins 45e, 45f, 45g of the same height are projected. 27, and other pins (45e,
If 45f) is placed in contact with the lower end surface 8b of the electric motor rotor 8, the electric motor rotor 8 will be supported upright regardless of the height of the balancer 8a. Therefore, the pallet 45 used when fixing the main shaft 6 and the electric motor rotor 8 to the balancer 8a is changed by changing the production model.
There is no need to replace it every time the height of the scroll changes, improving the productivity of the scroll compressor.

Example 7. FIG. 10 is an enlarged sectional view of a main part of a scroll compressor according to a seventh embodiment of the present invention. As shown in the figure, in this embodiment, at the lower end portion of the outer peripheral surface of the shell upper lid 12, there is formed a relief surface 30 facing the inner peripheral surface of the shell body 11 with a minute gap 29 therebetween. It should be noted that the fitting portion 12 a of the shell upper lid 12 including the escape surface 30 with the shell body 11 causes foreign matter such as spatter generated when the shell body 11 and the shell upper lid 12 are welded at the welding portion 22 to be inside the shell body 11. As in the conventional example, it is formed to be long in the up-down direction so as not to fall into the area.

Since such a relief surface 30 is formed,
When the shell upper lid 12 is inserted into the shell main body 11, interference between the outer peripheral surface of the fitting portion 12a and the inner peripheral surface of the shell main body 11 is prevented and the shell upper lid 12 can be easily inserted, so that the productivity of the scroll compressor is improved. If the width of the gap 29 is set so that foreign matter such as spatter during welding cannot pass through,
Foreign matter does not fall into the shell body 11 through the gap 29.

Example 8. FIG. 11 is an enlarged cross-sectional view of the essential parts of the scroll compressor according to the eighth embodiment of the present invention. As shown in the figure, even if the relief surface 30 is formed as a tapered surface whose diameter is reduced downward, the same effect as that of the seventh embodiment can be obtained.

Example 9. FIG. 12 is an enlarged cross-sectional view of essential parts of a scroll compressor according to Embodiment 9 of the present invention. As shown in the figure, even if the relief surface 30 is formed by chamfering the corner portion between the outer peripheral surface and the lower end surface of the shell upper lid 12, the same effect as that of the seventh embodiment can be obtained.

Example 10. FIG. 13 is a tenth embodiment of the present invention.
It is a perspective view of the principal part of the scroll compressor concerning. In the figure, 9a is a coil end of the motor stator 9, and 9b is
Is a power lead wire, and 9c is a thermo lead wire. The power supply lead wire 9b and the thermo lead wire 9c are taken out from the upper end of the (coil end 9a) of the motor stator 9 and connected to the terminal block 16 via a flag-shaped terminal provided at the tip. Further, in this embodiment, the lead-out portion of the power supply lead wire 9b and the take-out portion of the thermo lead wire 9c are separately located in the circumferential direction of the electric motor stator 9.
Therefore, depending on the position of the take-out portion, the power supply lead wire 9
b can be distinguished from the thermo lead wire 9c, the terminal block 1
At the time of connecting to 6, the labor for identifying the line type can be saved, and the productivity of the scroll compressor is improved.

If the lengths of the power supply lead wire 9b and the thermo lead wire 9c are set to the minimum necessary lengths that can be connected to the terminal block 16, respectively, the power supply lead wire 9b and the power supply lead wire 9b can be used during assembly and operation of the scroll compressor. Thermo lead wire 9c
Can prevent short circuit, ground fault, or disconnection due to contact with other parts. Further, it is possible to make the incorrect connection physically impossible.

Example 11. FIG. 14 shows the eleventh embodiment of the present invention.
It is a principal part sectional view of the scroll compressor concerning. As shown in the figure, in this embodiment, the lead-out portions of the power supply lead wire 9b and the thermo-lead wire 9c are the same, and the respective lengths are set to different lengths. Therefore, the power supply lead wire 9b and the thermo lead wire 9c can be identified by their respective lengths, and the same effect as that of the tenth embodiment can be obtained.

Example 12 FIG. 15 shows a twelfth embodiment of the present invention.
It is a schematic sectional drawing of the scroll compressor which concerns on. In this embodiment, the electric motor stator 9 is fixed at a position where the distance from the terminal block 16 to the upper end of the electric motor stator 9 is a predetermined distance a. Therefore, when the core stacking length of the electric motor stator 9 changes, the distance from the terminal block 16 to the upper end portion of the electric motor stator 9 does not change even if the height of the lower end portion of the electric motor stator 9 changes. It is not necessary to change the lengths of 9b and the thermo lead wire 9c, and with the power lead wire 9b and the thermo lead wire 9c of a fixed length,
It will be possible to support multiple types of scroll compressors with different electric motor capacities, saving the trouble of adjusting the length of the power lead wire and the thermo lead wire each time the scroll compressor model changes. Productivity is further improved.

[0058]

As described above, in the scroll compressor according to the present invention, the first positioning for engaging the supporting projection having the fixing hole with the engaging projection provided on the external pallet at the time of assembly. In the case where the hole is formed by cutting out from the fixing hole, the pallet and the support foot are positioned by engaging the engaging protrusion and the first positioning hole. Therefore, one type of pallet can be used in common for multiple types of scroll compressors with different positions and sizes of fixing holes, and it is possible to save the trouble of replacing the pallet each time the type of scroll compressor is changed. Therefore, the productivity of the scroll compressor is improved. Further, since the first positioning hole is formed by cutting out from the fixing hole, the first positioning hole can be provided even when the support foot has no space.

Further, in the support foot having the fixing hole, the second positioning hole for engaging with the engaging projection provided on the external pallet at the time of assembly is formed independently of the fixing hole, By engaging the protrusion with the second positioning hole, the pallet and the support foot are positioned. Therefore, one type of pallet can be used in common for multiple types of scroll compressors with different positions and sizes of fixing holes, eliminating the need to replace the pallet each time the scroll compressor model changes. Therefore, the productivity of the scroll compressor is improved. In addition, since the second positioning hole is formed separately from the fixing hole, the second positioning hole does not adversely affect the fixed state when the scroll compressor is fixed using the fixing hole.

Further, in the second positioning hole, the height adjusting spacer which engages with the engaging projection provided on the external pallet is detachably attached. Can be adjusted. Therefore, one type of pallet can be used in common for multiple types of scroll compressors with different shell body heights.
By eliminating the need to change the pallet every time the scroll compressor model changes, the productivity of the scroll compressor is further improved.

Further, in the case where a hole whose bottom surface height matches the height of the lower end surface of the electric motor rotor is formed upward from the lower end surface of the balancer, for example, at the time of assembly, the same hole formed on the pallet is the same. The motor rotor can be supported in an upright state by inserting one of the plurality of height pins and abutting the other pin against the lower end surface of the motor rotor. Therefore, one type of pallet can be used in common for multiple types of scroll compressors with different balancer heights, and it is possible to save the trouble of replacing the pallet each time the model of the scroll compressor changes. The productivity of the scroll compressor is improved.

Further, in the case where a relief surface is formed at the lower end of the outer peripheral surface of the shell upper body so as to face the inner peripheral surface of the shell main body with a minute gap therebetween, the shell upper cover is fitted into the upper end opening of the shell main body. At this time, the outer peripheral surface of the shell upper lid and the inner peripheral surface of the shell body are prevented from interfering with each other. Therefore, it is easy to fit the shell upper lid, and the productivity of the scroll compressor is improved.

Further, in the case where the power lead-out portion and the thermo lead wire take-out portion are located separately and independently in the circumferential direction, the power lead wire and the thermo lead wire are distinguished by the position of the take-out portion. To be done. Therefore, when connecting to the terminal block, the labor for identifying the power lead wire and the thermo lead wire can be saved, and the productivity of the scroll compressor is improved.

If the length from the lead-out portion to the tip of the power supply lead wire and the length from the lead-out portion to the tip of the thermo lead wire are set to different lengths, the power supply lead wire is different depending on the length. And the thermo-lead are identified. Therefore, at the time of connection, the labor for identifying the power lead wire and the thermo lead wire can be saved, and the productivity of the scroll compressor is improved.

Further, if the electric motor stator is fixed at a position where the distance from the terminal block to the upper end of the electric motor stator becomes a predetermined distance, even if the core stacking length of the electric motor stator changes, the power supply lead wire and the thermostat There is no need to change the length of the lead wire. Therefore, with a fixed length of power lead wire and thermo lead wire, it is possible to support multiple types of scroll compressors with different electric motor capacities.
The labor of adjusting the lengths of the power lead wire and the thermo lead wire each time the model of the scroll compressor is changed can be saved, and the productivity of the scroll compressor is further improved.

[Brief description of drawings]

FIG. 1 is a plan view of a support foot according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a plan view of a main part of a support foot according to a second embodiment of the present invention.

FIG. 4 is a plan view of a supporting leg according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a scroll compressor according to a third embodiment of the present invention.

FIG. 6A is a sectional view of a main part of a support foot and a height adjusting spacer according to a fourth embodiment of the present invention. (B) is a sectional view showing a usage state of a height adjusting spacer according to a fourth embodiment of the present invention.

FIG. 7A is a sectional view of a main part of a support foot and a height adjusting spacer according to a fifth embodiment of the present invention. (B) is sectional drawing which shows the use condition of the spacer for height adjustment which concerns on Example 5 of this invention.

FIG. 8 is a perspective view showing an electric motor rotor according to a sixth embodiment of the present invention in an inverted state.

FIG. 9 is a perspective view of a pallet used in a sixth embodiment of the present invention.

FIG. 10 is an enlarged cross-sectional view of a main part of a scroll compressor according to a seventh embodiment of the present invention.

FIG. 11 is an enlarged cross-sectional view of a main part of a scroll compressor according to Embodiment 8 of the present invention.

FIG. 12 is an enlarged cross-sectional view of a main part of a scroll compressor according to a ninth embodiment of the present invention.

FIG. 13 is a perspective view of a main part of a scroll compressor according to Embodiment 10 of the present invention.

FIG. 14 is a cross-sectional view of a main part of a scroll compressor according to Embodiment 11 of the present invention.

FIG. 15 is a schematic sectional view of a scroll compressor according to Embodiment 12 of the present invention.

FIG. 16 is a cross-sectional view of a scroll compressor according to a conventional example.

FIG. 17 is an enlarged cross-sectional view of a main part of a scroll compressor according to a conventional example.

FIG. 18 is a perspective view showing a lower end portion of an electric motor rotor according to a conventional example as an upper side.

FIG. 19 is a perspective view of a pallet used in a conventional example.

FIG. 20 is a cross-sectional view illustrating an assembly process of a scroll compressor according to a conventional example.

FIG. 21 is an enlarged sectional view of a main part of a scroll compressor according to a conventional example.

FIG. 22 (a) is a perspective view showing an example of a support foot according to a conventional example. (B) is a perspective view showing another example of a support foot concerning a conventional example.

FIG. 23 is a perspective view showing an assembling operation of a scroll compressor according to a conventional example.

[Explanation of symbols]

1 fixed scroll, 2 orbiting scroll, 4 compression chamber, 6 main shaft, 8 electric motor rotor, 8a balancer, 9
Motor stator, 9b Power lead wire, 9c Thermo lead wire, 10 Shell bottom lid, 10a Supporting foot, 10c
Fixing hole, 10d first positioning hole, 10e second positioning hole, 11 shell body, 12 shell upper lid, 16
Terminal block, 25 Height adjustment spacer, 27 holes, 30
Relief surface.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideaki Machida 6-566 Tehira, Wakayama City Wakayama Works, Mitsubishi Electric Corporation (72) Inventor Tsunenori Mori 6-566 Tehira, Wakayama Mitsubishi Electric Company Co., Ltd. Wakayama Factory (72) Inventor Hiroyuki Fujiwara 6-566 Tehira, Wakayama City Mitsubishi Electric Co., Ltd. Wakayama Factory (72) Inventor Shoichiro Hara 8-1-1 Tsukaguchihonmachi, Amagasaki Mitsubishi Electric Engineering Co., Ltd. Production Technology Center

Claims (8)

[Claims] 1. A fixed scroll and a wobble which form a compression chamber by combining a cylindrical shell body, a shell bottom lid provided at the lower end of the shell body, and mutual vortex protrusions provided in the shell body. A scroll compressor including a dynamic scroll and a supporting leg provided on the shell bottom cover and having a fixing hole for fixing the shell bottom cover to the outside, wherein the supporting leg is provided on an external pallet during assembly. A scroll compressor characterized in that a first positioning hole that engages with the engaging projection is formed by cutting out from the fixing hole. 2. A fixed scroll and a wobble which form a compression chamber by combining a tubular shell body, a shell bottom lid provided at the lower end of the shell body, and mutual vortex protrusions provided in the shell body. In a scroll compressor provided with a dynamic scroll and a support foot provided on the shell bottom cover and having a fixing hole for fixing the shell bottom cover to the outside, the scroll compressor is provided on the support foot and provided on an external pallet during assembly. A scroll compressor characterized in that a second positioning hole for engaging with the engagement protrusion formed is formed independently of the fixing hole. 3. The scroll compressor according to claim 2, wherein a height adjusting spacer that engages with an engaging protrusion provided on an external pallet is detachably attached to the second positioning hole. 4. A tubular shell main body, a fixed scroll and an orbiting scroll provided in the shell main body to form a compression chamber by combining mutually vortex protrusions, and extending in the cylinder center direction of the shell main body. A main shaft slidably connected to the orbiting scroll at its upper end, and an electric motor rotor provided around the main shaft and having a downwardly facing balancer protruding from its lower end surface,
In a scroll compressor having an electric motor stator fixed to the shell body and surrounding the electric motor rotor, a hole whose bottom surface matches the height of the lower end surface of the electric motor rotor is drilled upward from the lower end surface of the balancer. A scroll compressor characterized by being installed. 5. A combination of a tubular shell body, a shell upper lid having an inverted U-shaped cross section that is hermetically fitted in an upper end opening of the shell body, and mutual spiral projections provided in the shell body. In a scroll compressor provided with a fixed scroll and an orbiting scroll that form a compression chamber, a relief surface facing the inner peripheral surface of the shell body with a minute gap is provided at a lower end portion of an outer peripheral surface of the shell upper lid. A scroll compressor characterized by being formed. 6. A tubular shell body, a fixed scroll and an orbiting scroll which are provided in the shell body, and which form a compression chamber by combining mutually spiral projections, and extend in the cylinder center direction of the shell body. A main shaft slidably connected to the orbiting scroll at an upper end portion, an electric motor rotor provided around the main shaft, an electric motor stator fixed to an inner peripheral surface of the shell body and surrounding the electric motor rotor, and the electric motor. In a scroll compressor including a power lead wire and a thermo lead wire, which are taken out from an upper end portion of a stator and are connected to a terminal block provided on a peripheral wall of the shell body at a tip, a take-out portion of the power lead wire and the A scroll compressor, characterized in that the take-out portion of the thermo-lead wire is located separately and independently in the circumferential direction. 7. A tubular shell main body, a fixed scroll and an orbiting scroll provided in the shell main body to form a compression chamber by combining mutually spiral projections, and extending in a cylinder center direction of the shell main body. A main shaft slidably connected to the orbiting scroll at an upper end portion, an electric motor rotor provided around the main shaft, an electric motor stator fixed to an inner peripheral surface of the shell body and surrounding the electric motor rotor, and the electric motor. In a scroll compressor provided with a power lead wire and a thermo lead wire which are taken out from an upper end portion of a stator and are connected to a terminal block provided on a peripheral wall of the shell body at a tip end, from a take-out portion to a tip end of the power lead wire. And the length of
A scroll compressor, wherein the length from the take-out portion to the tip of the thermo lead wire is set to be different. 8. The scroll compressor according to claim 6, wherein the electric motor stator is fixed at a position where the distance from the terminal block to the upper end of the electric motor stator is a predetermined distance.