JP2002242834A - On-vehicle horizontal hermetic compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a on-vehicle horizontal hermetic compressor capable of sucking lubricating oil from an oil suction pipe without lowering the level of the lubricating oil below the oil suction pipe, even if the compressor is inclined by the inclination of a vehicle. SOLUTION: An electric device 6 is provided in a hermetic container with a laterally set rotary shaft 7 and a compressor device 8 driven by the electric device is also provided therein. The lubricating oil is stored in the hermetic container 4. An oil pump 66 for sending the lubricating oil to the compression device 8 is provided in the opposite side of the electric device 6 of the compression device 8. Partition walls 72 and 73 partitioning the inside of the hermetic container 4 are respectively provided on the sides of the electric device 6 of the compressor device 8 and the oil pump 66 while allowing the movement of refrigerant gas and the lubricating oil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontally mounted hermetic compressor equipped with an oil supply means for sending lubricating oil contained in a closed container to a compression element.

[0002]

2. Description of the Related Art A horizontal hermetic compressor is disclosed in
-229660 (F25B43 / 00). This type of horizontal hermetic compressor is provided with an electric element in a horizontally long sealed container with a rotation axis directed in the horizontal direction, and a compression element (a rotary compressor or a scroll compressor or the like) driven by this electric element. Have been.
Lubricating oil is stored in the closed container, and an oil suction pipe and an oil pump are provided on the side opposite to the electric element. Then, the lubricating oil inserted into the lubricating oil by the oil pump and sucked from the oil suction pipe is prevented from being worn by the horizontal hermetic compressor by being circulated to the cylinder and the bearing frame of the compression element. I have.

[0003]

On the other hand, in recent years, most vehicles are equipped with a car air conditioner, and a horizontal closed type compressor is also used for the car air conditioner. However, when such a horizontal hermetic compressor is used in a vehicle, when the vehicle runs on a mountain or a hill and inclines, the horizontal hermetic compressor for in-vehicle tilts accordingly, and the hermetic container moves to the electric element side. On the other hand, the oil pump side (oil suction pipe side) may incline in a higher direction, but when the oil pump side is higher, the lubricating oil stored in the sealed container is gravity driven by the electric oil on the opposite side to the oil suction pipe. It moves to the element side. If the lubricating oil moves to the opposite side of the oil suction pipe, the oil level of the lubricating oil will drop below the oil suction pipe, and the oil pump will not be able to suck in the lubricating oil from the oil suction pipe, resulting in poor lubrication performance. I will. Therefore, even when the vehicle inclines and the compressor inclines accordingly, the oil level of the lubricating oil can be sucked from the oil suction pipe without lowering the oil level from the oil suction pipe. The development of was desired.

The present invention has been made to solve the problems of the prior art, and even when the vehicle is tilted and the compressor is tilted accordingly, the oil level of the lubricating oil is lower than that of the oil suction pipe. It is an object of the present invention to provide a vehicle-mounted horizontal hermetic compressor capable of sucking lubricating oil from an oil suction pipe without using the oil suction pipe.

[0005]

In other words, a vehicle-mounted horizontal hermetic compressor according to the present invention is provided with an electric element provided with a rotating shaft directed laterally in a sealed container, and is driven by the electric element. A compression element, lubricating oil contained in a sealed container, and an oil supply means provided on a side of the compression element opposite to the electric element for feeding the lubricating oil to the compression element, and refrigerant sucked from outside the closed container After the gas is compressed by the compression element and discharged to the electric element side in the closed container, the gas is discharged from the oil supply means side to the outside of the closed container, and the refrigerant gas and the lubrication are supplied to the electric element side and the oil supply means side of the compression element. Partition walls are provided to partition the inside of the closed container while allowing the movement of oil.

[0006] In addition to the above, the horizontal hermetic compressor for vehicle mounting according to the invention of claim 2 further discharges the refrigerant gas discharged from the compression element to the electric element side in the closed vessel through the outside of the closed vessel. An external pipe is provided in a closed container for the purpose.

According to a third aspect of the present invention, in addition to the first or second aspect, the compression element is constituted by a plurality of rotary compression elements provided between both partition walls. Things.

According to the present invention, there is provided a vehicle-mounted horizontal hermetic compressor comprising: a motorized element provided in a hermetically sealed container with a rotating shaft directed laterally; a compression element driven by the motorized element; Lubricating oil contained in the container, provided on the opposite side of the electric element of the compression element, and an oil supply means for sending the lubricating oil to the compression element, wherein the refrigerant gas sucked from outside the closed container is supplied to the compression element. After being compressed and discharged to the electric element side in the closed container, it is discharged from the oil supply means side to the outside of the closed container, and the movement of the refrigerant gas and the lubricating oil is allowed to the electric element side and the oil supply means side of the compression element. Since the partition walls for partitioning the inside of the closed container are provided, for example, even when the oil supply means side of the compressor is increased due to the inclination of the vehicle, the electric element side in the closed container partitioned by the partition wall is closer to the oil supply means side. Configuration with high pressure Since it has to, lubricating oil stored in the oil supply means side of the sealed vessel partition wall it is possible to prevent the flow out into the electric element side a barrier. As a result, a decrease in the oil level of the lubricating oil stored on the side of the oil supply means in the closed container can be minimized, and a decrease in lubrication performance can be prevented. Therefore, even when the horizontal hermetic compressor is tilted, a predetermined amount of lubricating oil can be stored in the lubricating means side in the hermetic container, and the lubricating means is lubricated by suction from the lubricating means side in the hermetic container. The oil can be reliably supplied to the cylinder and the bearing frame.

[0009] In addition to the above, the vehicle-mounted horizontal hermetic compressor according to the second aspect of the present invention is for discharging the refrigerant gas discharged from the compression element to the electric element side in the hermetic container through the outside of the hermetic container. Since the external piping of is provided in a closed container,
The high-temperature refrigerant gas discharged from the compression element can be cooled by radiating heat in the process of passing through the external piping. Thereby, for example, even when the temperature of the horizontal hermetic compressor rises using a refrigerant such as carbon dioxide as in the embodiment, the cooling efficiency of the refrigerant discharged from the compressor can be significantly improved. Become like

According to a third aspect of the present invention, in addition to the first or second aspect, the compression element comprises a plurality of rotary compression elements provided between both partition walls. For example, the electric element side is high between the partition walls, and the oil supply means side is low between the partition walls, so that it is easy to create an intermediate pressure between the intermediate partition walls. This makes it easier to press the lubricating oil against the oil supply means due to the pressure difference between the partition walls. Therefore, even when the horizontal hermetic compressor is tilted, a predetermined amount of lubricating oil can be stored in the oil sump, and the lubricating means uses the lubricating oil sucked from the oil sump into the cylinder or the bearing frame. The lubrication performance can be greatly improved, and the lubrication performance can be greatly improved.

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows first and second rotary compression elements 2, 3 as an embodiment of a vehicle-mounted horizontal hermetic compressor according to the present invention.
FIG. 1 shows a vertical sectional side view of a two-cylinder rotary compressor 1 provided with a rotary cylinder.

The rotary compressor 1 of the present invention constitutes a refrigerant circuit of a car air conditioner for air-conditioning the interior of a vehicle (not shown), and is mounted horizontally in, for example, an engine room of the vehicle. The rotary compressor 1 includes a cylindrical hermetic container 4 made of a steel plate,
The first element driven by the electric element 6 disposed and housed in the internal space of the closed container 4, and a rotating shaft 7 provided in a lateral direction of the electric element 6 (axial direction of the closed container 4). It comprises a compression element 8 composed of a rotary compression element 2 and a second rotary compression element 3.

A predetermined amount of carbon dioxide as an example of a carbon dioxide gas is filled in the closed container 4 as a refrigerant, and a predetermined amount of a lubricating oil OL is stored therein. Further, as an example of the lubricating oil OL, for example, a predetermined amount of PAG (polyalkylene glycol) is stored. The lubricating oil OL is PAO
(Polyalpha-olefin) or mineral oil.

In the embodiment, the closed container 4 is a container main body 4A for accommodating the electric element 6 and the compression element 8, and a bowl-shaped end cap 4B for closing one end opening of the container main body 4A on the electric element 6 side. The end cap 4B is provided with a terminal (wiring omitted) 11 for supplying electric power to the electric element 6.
Further, an oil reservoir 12 for storing the lubricating oil is formed in the other end of the closed casing 4 located on the opposite side of the compression element 8 from the electric element 6.

The electric element 6 comprises a stator 22 annularly mounted along the inner peripheral surface on one end side of the container body 4A of the closed container 4, and a rotor 24 inserted inside the stator 22. The rotor 24 is fixed to the rotating shaft 7 extending laterally through the center.

The stator 22 has a stator core 26 in which ring-shaped electromagnetic steel sheets are laminated, and a stator coil 28 wound around the stator core 26. Also, the rotor 24 is made of a magnetic steel sheet core 3 like the stator 22.
0 and a permanent magnet inserted therein, and both constitute a brushless DC motor.

An intermediate partition plate 36 is sandwiched between the first rotary compression element 2 and the second rotary compression element 3.
That is, the first rotary compression element 2 and the second rotary compression element 3
Are located in the left and right cylinders 38 and 40 and the cylinders 38 and 40 disposed on the left and right sides of the intermediate partition plate 36 and have a phase difference of 180 degrees. The left and right rollers 46, 48 fitted to the left and right eccentric portions 42, 44 and eccentrically rotated, and contact the left and right rollers 46, 48 to move the inside of the left and right cylinders 38, 40 toward the low pressure chamber side and the high pressure chamber side, respectively. The main frame (left bearing) 51 and the auxiliary frame (right bearing) 52, which are divided into vanes (not shown), close the respective opening surfaces of the left and right cylinders 38 and 40 and also serve as a bearing for the rotary shaft 7.

A suction passage 53 is formed in the cylinder 38, and the suction passage 53 communicates with a suction pipe 54 attached to the closed container 4. Although not shown, the suction pipe 54 is connected to a cooling cooler provided in the vehicle interior. Further, a series of branch suction passages 56 communicating with the suction passages 53 are formed in the intermediate partition plate 36 and the cylinder 40. Also in the main frame 51 is attached muffler cover 57, muffler chamber 58 appropriately communicating with the said cylinder 38 in the muffler cover 57 is formed. Further, a muffler cover 59 is attached to the auxiliary frame 52, and a muffler chamber 61 is formed in the muffler cover 59 so as to communicate with the inside of the cylinder 40 as appropriate.

The silencing chamber 61 includes a cylinder 38,
The muffler cover 57 communicates with the interior of the muffler chamber 58 through a communication passage 62 that penetrates the muffler cover 57. 4 is connected.

An oil pump 66 is provided at the end of the rotary shaft 7 on the side of the auxiliary frame 52 (the side opposite to the electric element 6).
The oil suction pipe 67 is provided to descend toward the oil reservoir 12, and the lower end thereof is open at a lower portion of the oil reservoir 12. Further, a discharge pipe 71 is attached to the upper part of the closed vessel 4 on the side opposite to the electric element 6 of the compression element 8 (on the side of the oil reservoir 12 of the cylinder 40).

Partition walls 72 and 73 are provided on the electric element 6 side and the oil reservoir 12 side of the compression element 8, respectively. In this case, the partition wall 72 is attached to the muffler cover 57 or the main frame 51 (or may be the cylinder 38), and allows the movement of the refrigerant gas and the lubricating oil to move the inside of the sealed container 4 toward the electric element 6 side and the compression element 8 side. And divided into The partition wall 73 is attached to the cylinder 40 (or the auxiliary frame 52 or the muffler cover 59), and allows the movement of the refrigerant gas and the lubricating oil to move the inside of the sealed container 4 toward the compression element 8 and the oil reservoir 12 side. And divided into The discharge pipe 71 is located on the oil reservoir 12 side of the partition wall 73.

With the above configuration, when the coil 28 of the electric element 6 is energized through the terminal 11 and the wiring (not shown), the rotor 24 rotates. This rotation causes the left and right rollers 46 and 48 fitted to the left and right eccentric portions 42 and 44 provided integrally with the rotary shaft 7 to eccentrically rotate inside the left and right cylinders 38 and 40.

As a result, the refrigerant gas sucked into the suction pipe 54 from the outside passes through the suction passage 53 to the cylinder 38.
Of the cylinder 40 through the branch suction passage 56 and into the low pressure chamber of the cylinder 40. The sucked low-pressure refrigerant gas is compressed by the operation of the rollers 46, 48 and the vanes, and becomes high-temperature and high-pressure, reaches the silencing chamber 58 from the high-pressure chamber side of the cylinder 38, and closes the electric element 6 side from the discharge port. In addition to being discharged into the container 4, it is discharged from the high pressure chamber side of the cylinder 40 to the sound deadening chamber 58 via the sound deadening chamber 61 and the communication passage 62, and is discharged from the discharge port into the closed container 4 on the side of the electric element 6.

As described above, the high-temperature and high-pressure refrigerant gas discharged toward the electric element 6 in the closed container 4 is supplied to the closed container 4 and the partition 72, the cylinders 38 and 40 of the compression element 8, and the partition 73.
Oil reservoir 12 of the closed container 4 through the gap that is formed between
Side, and is discharged from the discharge pipe 71 to the outside.

As a result, the pressure distribution in the sealed container 4 is the highest high pressure HH on the electric element 6 side of the partition wall 72, and the middle high pressure HM lower than the intermediate partition plate 36 of the compression element 8 between the partition walls 72 and 73. The lowest high pressure HL is at the oil reservoir 12 side of the partition 73 where the discharge pipe 71 is located.

On the other hand, the rotation of the rotary shaft 7 also rotates the oil pump 66 to suck the lubricating oil in the oil reservoir 12 from the lower end opening of the oil suction pipe 67. Then, it passes through the rotating shaft 7 and slides in each of the cylinders 38 and 40 and each of the frames 5.
The lubrication is supplied to the sliding portion between the first and second 52 and the rotary shaft 7.

As described above, the lubricating oil stored in the oil reservoir 12 reduces the pressure distribution in the closed container 4 to the electric element 6 of the partition wall 72.
High pressure HH on the side, middle high pressure HM on the partition walls 72 and 73,
Since the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL, the high pressure HH and the intermediate high pressure H
M, the low high pressure HL makes it possible to press the lubricating oil in the closed container 4 to the oil reservoir 12 (oil pump 66 side). As a result, the lubricating oil stored in the oil reservoir 12 can be prevented from flowing toward the electric element 6 by the partition walls 73 and 72. Accordingly, the oil pump 66 supplies the lubricating oil sucked from the oil reservoir 12 to the cylinders 38, 40.
Main frame (left bearing) 5 that also serves as bearing for rotary shaft 7 and rotary shaft 7
1 and the auxiliary frame (right bearing) 52 can be reliably supplied with oil.

FIG. 2 illustrates a two-cylinder rotary compressor 1 in which the oil pump 66 is inclined at a high angle with respect to the electric element 6 of the vehicle-mounted horizontal hermetic compressor. In this case, the sealed container 4 is inclined at an angle (approximately 30.0 °) with the oil pump 66 side high and the electric element 6 side low. Thus, the oil pump 66 of the closed container 4
When the side is raised, the lubricating oil stored in the oil reservoir 12 of the partition wall 73 having the discharge pipe 71 passes through the gap formed between the partition wall 73 and each of the cylinders 38, 40 and the partition wall 72 by gravity, so that the electric element However, the pressure distribution of the high-pressure refrigerant discharged into the closed container 4 is changed to the electric element 6 of the partition wall 72.
High pressure HH on the side, middle high pressure HM on the partition walls 72 and 73,
Since the oil reservoir 12 side of the partition 73 is configured to have a low high pressure HL, the lubricating oil stored in the oil reservoir 12 flows out to the electric element 6 due to a pressure difference between the two partitions 73 and 72. Can be prevented.

As a result, the horizontally mounted hermetic compressor mounted on the vehicle is driven by the electric element 6 (the side opposite to the oil pump 66).
Therefore, even when the oil pump 66 is tilted so as to be higher, the decrease in the oil level of the lubricating oil stored in the oil pump 66 in the sealed container 4 is minimized, and the lubrication performance is reduced. Can be prevented beforehand, and a predetermined amount of lubricating oil can be stored in the oil reservoir 12. That is, the oil pump 66 of the closed container 4
Even when the side is tilted high, a small amount of lubricating oil is present on the electric element 6 side of the high-pressure HH partition wall 72 and the low-pressure HL partition 73
Most of the lubricating oil can be stored in the oil reservoir 12 (oil pump 66 side) on the right side. Therefore,
The oil pump 66 is provided with a main frame (left bearing) 51 and an auxiliary frame (right bearing) 52 which also serve as bearings for the cylinders 38 and 40 and the rotary shaft 7 for lubricating oil sucked from the oil reservoir 12.
The fuel can be reliably supplied.

Next, a description will be given of a two-cylinder rotary compressor 1 in which the electric element 6 is inclined at a high angle with respect to the oil pump 66 of the vehicle-mounted horizontal hermetic compressor.
In this case, the closed container 4 is inclined at an angle (about 30.0 °) with the oil pump 66 side lower and the electric element 6 side higher. As described above, when the electric element 6 side is higher than the oil pump 66 side of the closed container 4, the oil pump 66
Side of the oil reservoir 1 of the partition wall 73 where the discharge pipe 71 is located
The lubricating oil stored in 2 does not flow out to the electric element 6 side due to gravity and is stored in the oil reservoir 12.

When the electric element 6 is tilted higher than the oil pump 66 of the horizontal hermetic compressor mounted on the vehicle, a predetermined amount of lubricating oil is stored in the oil reservoir 12. can do. Therefore, the oil pump 6
Numeral 6 denotes the lubricating oil sucked from the oil reservoir 12
The oil can be reliably supplied to the main frame (left bearing) 51 and the auxiliary frame (right bearing) 52 which also serve as bearings for the rotary shafts 8 and 40 and the rotary shaft 7.

FIG. 4 shows another example of a two-cylinder rotary compressor 1 provided with first and second rotary compression elements 2 and 3 as an embodiment of a horizontally mounted hermetic compressor for use in a vehicle. . In this horizontally mounted hermetic compressor, an external pipe 64 for discharging the high-temperature and high-pressure refrigerant gas discharged from the compression element 8 to the electric element 6 inside the closed vessel 4 through the outside of the closed vessel 4 is provided. Is provided. That is, in the horizontally mounted hermetic compressor for vehicle use, an external pipe 64 is connected to a discharge port (not shown) formed in the muffler cover 57 based on the rotary compressor 1 described above. The external piping 64 once goes out of the sealed container 4 from the discharge port and communicates with the terminal 11 side of the sealed container 4 into the sealed container 4 (the electric element 6 side).

As described above, an oil pump 66 is provided at the end of the rotating shaft 7 on the auxiliary frame 52 side (the side opposite to the electric element 6), and the oil suction pipe 67 provided in the oil pump 66 is The oil suction pipe 67 descends toward the oil reservoir 12, and the lower end of the oil suction pipe 67 opens at the lower part of the oil reservoir 12. Furthermore, the side of the compression element 8 opposite to the electric element 6 (the cylinder 40
A discharge pipe 71 is attached to the upper part of the closed vessel 4 on the side of the oil reservoir 12). Other rotary compressor 1 mentioned above
It is configured similarly.

In the above configuration, when the coil 28 of the electric element 6 is energized through the terminal 11 and the wiring (not shown), the rotor 24 rotates. This rotation causes the left and right rollers 46 and 48 fitted to the left and right eccentric portions 42 and 44 provided integrally with the rotary shaft 7 to eccentrically rotate inside the left and right cylinders 38 and 40.

As a result, the refrigerant gas sucked into the suction pipe 54 from the outside passes through the suction passage 53 to the cylinder 38.
Of the cylinder 40 through the branch suction passage 56 and into the low pressure chamber of the cylinder 40. The sucked low-pressure refrigerant gas is compressed by the operation of the rollers 46, 48 and the vanes, becomes high temperature and high pressure, reaches the silencing chamber 58 from the high pressure chamber side of the cylinder 38, and is discharged from the discharge port into the external pipe 64. At the same time, from the high-pressure chamber side of the cylinder 40, the noise reduction chamber 58 passes through the noise reduction chamber 61 and the communication passage 62.
And is discharged from the discharge port into the external pipe 64.

The high-temperature and high-pressure refrigerant gas discharged from the discharge port into the external pipe 64 is cooled by exchanging heat with the outside air in the external pipe 64 provided outside the closed vessel 4 and then cooled. 4 (the electric element 6 side). The high-pressure refrigerant gas that has been cooled and discharged into the closed container 4 is supplied to the closed container 4, the partition wall 72, and the cylinders 38 and 40 of the compression element 8.
In the process of passing through the gap formed between the airtight container 4 and the partition 73, the electric element 6 of the closed container 4 or the cylinder 38,
The cooling pipe 40 reaches the oil reservoir 12 side in the sealed container 4 while being cooled, and is discharged from the discharge pipe 71 to the outside.

As a result, the pressure distribution in the sealed container 4 is the highest high pressure HH on the electric element 6 side of the partition wall 72, and the middle high pressure HM lower than the intermediate partition plate 36 of the compression element 8 between the partition walls 72 and 73. The lowest high pressure HL is at the oil reservoir 12 side of the partition 73 where the discharge pipe 71 is located.

On the other hand, the rotation of the rotary shaft 7 also rotates the oil pump 66 to suck the lubricating oil in the oil reservoir 12 from the lower end opening of the oil suction pipe 67. Then, it passes through the rotating shaft 7 and slides in each of the cylinders 38 and 40 and each of the frames 5.
The lubrication is supplied to the sliding portion between the first and second 52 and the rotary shaft 7.

As described above, the lubricating oil stored in the oil reservoir 12 reduces the pressure distribution in the closed container 4 to the electric element 6 of the partition wall 72.
High pressure HH on the side, middle high pressure HM on the partition walls 72 and 73,
Since the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL, the oil reservoir 12 (oil pump 66 side) is lubricated by the high high pressure HH, the intermediate high pressure HM, and the low high pressure HL as described above. It is possible to hold down the oil.
As a result, the lubricating oil stored in the oil reservoir 12 is
The outflow to the electric element 6 side is prevented by 3, 72. Therefore, while preventing the rotary compressor 1 from being heated, the oil pump 66 applies the lubricating oil sucked from the oil reservoir 12 to the main frame (left bearing) 51, which also serves as a bearing for the cylinders 38 and 40 and the rotating shaft 7, and the auxiliary frame. (Right bearing)
52 can be reliably refueled.

Here, FIG. 5 illustrates a two-cylinder rotary compressor 1 in which the oil pump 66 side is inclined higher than the electric element 6 side of the vehicle-mounted horizontal hermetic compressor. In this case, the sealed container 4 is inclined at an angle (approximately 30.0 °) with the oil pump 66 side high and the electric element 6 side low. Thus, the oil pump 66 of the closed container 4
When the side is raised, the lubricating oil stored in the oil reservoir 12 of the partition wall 73 having the discharge pipe 71 passes through the gap formed between the partition wall 73 and each of the cylinders 38, 40 and the partition wall 72 by gravity, so that the electric element The closed vessel 4 which is going to move to the side 6 but has become hot due to the high-pressure refrigerant cooled in the external pipe 64
While cooling the electric element 6 or each of the cylinders 38, 40, etc., the pressure distribution in the sealed container 4 is increased by applying a high pressure HH to the electric element 6 side of the partition wall 72 and an intermediate high pressure H
M, since the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL, the lubricating oil stored in the oil reservoir portion 12 is prevented from being heated by the rotary compressor 1 while preventing the rotary compressor 1 from heating.
It is prevented from flowing out to the electric element 6 side due to the pressure difference in the closed container 4 due to 3, 72. That is, even when the oil pump 66 side of the sealed container 4 is tilted high, a small amount of lubricating oil is present on the electric element 6 side of the partition wall 72 of high high pressure HH, and the oil reservoir 12 (oil pump) is located on the right side of the partition wall 73 of low high pressure HL. it is possible to store the most of the lubricating oil 66 side).

Thus, even when the temperature of the rotary compressor 1 using carbon dioxide as the refrigerant rises, the cooling efficiency of the refrigerant discharged from the compressor can be improved, and the horizontal type mounted on the vehicle can be improved. Even when the oil pump 66 side of the hermetic compressor is tilted to be higher, a decrease in the oil level of the lubricating oil stored in the oil pump 66 side in the hermetic container 4 can be minimized, and the lubrication performance decreases. Can be prevented beforehand, and a predetermined amount of lubricating oil can be stored in the oil reservoir 12. Therefore, while preventing the rotary compressor 1 from being heated, the oil pump 66 applies the lubricating oil sucked from the oil reservoir 12 to the main frame (left bearing) 51, which also serves as a bearing for the cylinders 38 and 40 and the rotating shaft 7, and the auxiliary frame. (Right bearing)
52 can be reliably refueled.

Next, FIG. 6 illustrates a two-cylinder rotary compressor 1 in which the electric element 6 is inclined higher with respect to the oil pump 66 of the vehicle-mounted horizontal hermetic compressor.
In this case, the sealed container 4 is inclined at an angle (about 30.0 °) with the oil pump 66 side lower and the electric element 6 side higher. As described above, when the electric element 6 side of the sealed container 4 is raised, the oil pump 66 side is lowered, and the discharge pipe 71
The lubricating oil stored in the oil reservoir 12 of the partition wall 73 having a gap does not flow out to the electric element 6 side due to gravity and is stored in the oil reservoir 12. Further, the pressure distribution within the closed container 4 partition wall 72
The electric element 6 side is configured to have a high high pressure HH, the partition walls 72 and 73 are configured to have an intermediate high pressure HM, and the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL. The lubricating oil is prevented from flowing further toward the electric element 6 by the partition walls 73 and 72.

Thus, even when the horizontal hermetic compressor mounted on the vehicle is tilted so that the electric element 6 side is elevated, the oil pump 66 is kept in the oil reservoir 12 while preventing the rotary compressor 1 from being heated. The lubricating oil sucked from the cylinder can be reliably supplied to the main frame (left bearing) 51 and the auxiliary frame (right bearing) 52 which also serve as bearings for the cylinders 38 and 40 and the rotating shaft 7.

Next, a one-cylinder rotary compressor 80 provided with a single rotary compression element 81 is shown in FIG. 7 as an embodiment of a vehicle-mounted horizontal hermetic compressor. In this case, the rotary compression element 81 of the on-vehicle horizontal hermetic compressor is constituted by a one-cylinder rotary compressor 80, and constitutes a refrigerant circuit of a car air conditioner for air-conditioning the interior of an automobile (not shown) as described above. For example, it is mounted horizontally in the engine room of a car. This rotary compressor 80
A cylindrical closed container 4 made of a steel plate;
A compression element composed of an electric element 6 arranged and housed in the internal space of the motor, and a rotary compression element 81 driven by a rotary shaft 7 provided in a lateral direction of the electric element 6 (axial direction of the closed casing 4). 8.

The sealed container 4 is filled with a predetermined amount of carbon dioxide as an example of a carbon dioxide gas as a refrigerant, and contains a predetermined amount of the lubricating oil OL. Further, as an example of the lubricating oil OL, for example, a predetermined amount of PAG (polyalkylene glycol) is stored. The lubricating oil OL is PAO
(Polyalpha-olefin) or mineral oil.

In the embodiment, the closed container 4 is a container main body 4A for housing the electric element 6 and the compression element 8, and a bowl-shaped end cap 4B for closing one end opening of the container main body 4A on the electric element 6 side. The end cap 4B is provided with a terminal (wiring omitted) 11 for supplying electric power to the electric element 6.
Further, an oil reservoir 12 for storing the lubricating oil is formed in the other end of the closed casing 4 located on the opposite side of the compression element 8 from the electric element 6.

The electric element 6 is composed of a stator 22 annularly mounted along the inner peripheral surface on one end side of the container main body 4A of the closed container 4, and a rotor 24 inserted and arranged inside the stator 22. The rotor 24 is fixed to the rotating shaft 7 extending laterally through the center.

The stator 22 has a stator core 26 in which ring-shaped electromagnetic steel sheets are laminated, and a stator coil 28 wound around the stator core 26. Also, the rotor 24 is made of a magnetic steel sheet core 3 like the stator 22.
0 and a permanent magnet inserted therein, and both constitute a brushless DC motor.

The rotary compression element 81 is fitted to an eccentric portion 42 provided on the rotary shaft 7 located in the cylinder 38, and the roller 46 rotates eccentrically. The main frame (left bearing) 51 and the auxiliary frame (right bearing) 52 which block the opening surface of the cylinder 38 and also serve as a bearing for the rotary shaft 7 are provided.

A suction passage 53 is formed in the cylinder 38, and the suction passage 53 communicates with a suction pipe 54 attached to the closed container 4. The main frame 5
A muffler cover 57 is attached to 1, and a muffler chamber 58 is formed in the muffler cover 57 so as to communicate appropriately with the inside of the cylinder 38. Further, the auxiliary frame 52
A muffler cover 59 is attached to the muffler cover 59, and a muffler chamber 61 communicating with the muffler chamber 58 is formed inside the muffler cover 59.

The muffler chamber 58 has a muffler cover 57.
A discharge port (not shown) formed at the bottom is provided, and an external pipe 64 is connected to this discharge port. The external pipe 64 once goes out of the closed container 4 from the discharge port and communicates from the terminal 11 side of the closed container 4 into the closed container 4 (the electric element 6 side).

An oil pump 66 is provided at the end of the rotary shaft 7 on the auxiliary frame 52 side (opposite to the electric element 6) as described above, and an oil pump 66 is provided for the oil pump 66. The pipe 67 descends toward the oil reservoir 12, and the lower end of the oil suction pipe 67 is opened at the lower part of the oil reservoir 12. Further, a discharge pipe 71 is attached to the upper part of the closed vessel 4 on the opposite side of the compression element 8 from the electric element 6 (on the side of the oil reservoir 12 of the cylinder 38).

The partitions 72 and 73 are provided on the electric element 6 side and the oil reservoir 12 side of the compression element 8 as described above. In this case, the partition wall 72 is attached to the muffler cover 57 or the main frame 51 (or may be the cylinder 38), and allows the movement of the refrigerant gas and the lubricating oil to move the inside of the sealed container 4 toward the electric element 6 side and the compression element 8 side. And divided into The partition wall 73 is attached to the cylinder 38 (or the auxiliary frame 52 or the muffler cover 59), and allows the refrigerant gas and the lubricating oil to move.
The inside of the closed container 4 is divided into a compression element 8 side and an oil reservoir 12 side. The discharge pipe 71 is located on the oil reservoir 12 side of the partition wall 73.

With the above arrangement, when the coil 28 of the electric element 6 is energized through the terminal 11 and the wiring (not shown), the rotor 24 rotates. By this rotation, the roller 46 fitted to the eccentric portion 42 provided integrally with the rotary shaft 7 eccentrically rotates inside the cylinder 38. As a result, the refrigerant gas sucked into the suction pipe 54 from the outside is sucked into the low pressure chamber side of the cylinder 38 through the suction passage 53.

Then, the sucked low-pressure refrigerant gas is compressed by the operation of the rollers 46 and the vanes, becomes high-temperature and high-pressure, reaches the silencing chamber 58 from the high-pressure chamber side of the cylinder 38, and flows from the discharge port into the external pipe 64. Discharged. The high-temperature and high-pressure refrigerant gas discharged from the discharge port into the external pipe 64 is cooled by exchanging heat with outside air in the external pipe 64 provided outside the closed container 4, and then discharged into the closed container 4. You. The cooled high-pressure refrigerant gas is supplied to the closed container 4 and the partition 7.
2. In the process of passing through the gap formed between the cylinder 38 of the compression element 8 and the partition wall 73, the oil reservoir 12 in the closed container 4 is cooled while cooling the electric element 6 or the cylinder 38 of the closed container 4 which has become hot. Side, and is discharged from the discharge pipe 71 to the outside.

As described above, the pressure distribution in the sealed container 4 is the highest high pressure HH on the electric element 6 side of the partition wall 72, the intermediate high pressure HM is lower on the compression element 8 portion between the partition walls 72 and 73, and Partition wall 7 with discharge pipe 71
The third high pressure HL is at the oil reservoir 12 side.

On the other hand, the rotation of the rotary shaft 7 also rotates the oil pump 66 to suck the lubricating oil in the oil reservoir 12 from the lower end opening of the oil suction pipe 67. Then, it passes through the rotating shaft 7 and slides in the cylinder 38 and the respective frames 51, 52.
And lubrication by supplying to a sliding portion between the rotary shaft 7 and the shaft.

As described above, the lubricating oil stored in the oil reservoir 12 reduces the pressure distribution in the closed vessel 4 to the electric element 6 of the partition wall 72.
High pressure HH on the side, middle high pressure HM on the partition walls 72 and 73,
Since the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL, the oil reservoir is formed by the pressure difference between the high high pressure HH, the intermediate high pressure HM, and the low high pressure HL caused by the two partition walls 72 and 73 as described above. 12 (oil pump 66 side) can be pressed with lubricating oil. As a result, the oil reservoir 1
The lubricating oil stored in 2 is prevented from flowing out to the electric element 6 side by the partition walls 73 and 72. Therefore, while preventing the rotary compressor 80 from being heated, the oil pump 66
The main frame which also serves as a lubricating oil of the bearing cylinder 38 and the rotating shaft 7 sucked from the oil reservoir section within 12 (the left bearing) 51
And the auxiliary frame (right bearing) 52 can be reliably supplied with oil.

Here, FIG. 8 illustrates a two-cylinder rotary compressor 1 in which the oil pump 66 side is inclined higher with respect to the electric element 6 side of the vehicle-mounted horizontal hermetic compressor. In this case, the sealed container 4 is inclined at an angle (approximately 30.0 °) with the oil pump 66 side high and the electric element 6 side low. Thus, the oil pump 66 of the closed container 4
When the side is raised, the lubricating oil stored in the oil reservoir 12 of the partition wall 73 where the discharge pipe 71 is located passes through the gap formed between the partition wall 73 and the cylinder 38 and the partition wall 72 by gravity to the electric element 6 side. The pressure distribution in the closed container 4 is controlled by the electric power of the partition wall 72 while cooling the electric element 6 or the cylinder 38 of the closed container 4 which is heated by the high-pressure refrigerant cooled in the external pipe 64. Since the element 6 side is configured to have a high high pressure HH, the partition walls 72 and 73 are configured to have an intermediate high pressure HM, and the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL, while preventing heating of the rotary compressor 80, The lubricating oil stored in the oil reservoir 12 is prevented from flowing toward the electric element 6 due to the pressure difference between the two partition walls 73 and 72. That is, even when the oil pump 66 side of the sealed container 4 is tilted high, a small amount of lubricating oil is present on the electric element 6 side of the partition wall 72 of high high pressure HH, and the oil reservoir 12 (oil pump) is located on the right side of the partition wall 73 of low high pressure HL. Most of the lubricating oil can be stored on the (66 side).

Thus, even if the temperature of the rotary compressor 80 using carbon dioxide as the refrigerant rises, the cooling efficiency of the refrigerant discharged from the compressor can be improved, and the horizontal type mounted on the vehicle can be improved. Even when the oil pump 66 side of the hermetic compressor is tilted to be higher, a decrease in the oil level of the lubricating oil stored in the oil pump 66 side in the hermetic container 4 can be minimized, and the lubrication performance decreases. It is possible to prevent such a situation from occurring, and a predetermined amount of lubricating oil can be stored in the oil reservoir 12. Accordingly, while preventing the rotary compressor 80 from being heated, the oil pump 66 sucks the lubricating oil sucked from the oil reservoir 12 into the main frame (left bearing) 51, which also serves as the bearing for the cylinder 38 and the rotating shaft 7, and the auxiliary frame (right). The bearing 52 can be reliably supplied with oil.

Next, a description will be given of a two-cylinder rotary compressor 1 in which the electric element 6 is inclined at a high angle with respect to the oil pump 66 of the vehicle-mounted horizontal hermetic compressor.
In this case, the closed container 4 is inclined at an angle (about 30.0 °) with the oil pump 66 side lower and the electric element 6 side higher. As described above, when the electric element 6 side of the sealed container 4 is raised, the oil pump 66 side is lowered, and the discharge pipe 71
The lubricating oil stored in the oil reservoir 12 of the partition wall 73 having the gap does not flow out to the electric element 6 side due to gravity and is stored in the oil reservoir 12. Further, the pressure distribution in the closed container 4 is controlled by the partition wall 72.
The electric element 6 side is configured to have a high high pressure HH, the partition walls 72 and 73 are configured to have an intermediate high pressure HM, and the oil reservoir 12 side of the partition wall 73 is configured to have a low high pressure HL. Lubricating oil is prevented from flowing out to the electric element 6 side due to a pressure difference between the two partition walls 73 and 72.

Accordingly, even when the horizontal hermetic compressor mounted on the vehicle is tilted so that the electric element 6 side is elevated, the oil pump 66 is kept in the oil reservoir 12 while preventing the rotary compressor 80 from being heated. The lubricating oil sucked from the cylinder can be reliably supplied to the main frame (left bearing) 51 and the auxiliary frame (right bearing) 52 which also serve as bearings for the cylinder 38 and the rotating shaft 7.

In this embodiment, the rotary compressor is used as an example of the hermetic compressor. However, the present invention is not limited to the rotary compressor, but is also applicable to a hermetic scroll compressor having a pair of meshing meshes.

[0064]

As described above in detail, according to the present invention, an on-vehicle horizontal hermetic compressor is provided with a motor-driven element provided in a sealed container with a rotating shaft directed laterally, and driven by the motor-driven element. A compression element, a lubricating oil accommodated in a sealed container, and an oil supply means provided on a side of the compression element opposite to the electric element for feeding the lubricating oil to the compression element, and sucked from outside the sealed container. The compressed refrigerant gas is compressed by the compression element and discharged to the electric element side in the closed container, and then discharged from the refueling means side to the outside of the closed container, and the refrigerant gas is supplied to the electric element side and the refueling means side of the compression element. And the partition walls for partitioning the inside of the sealed container while allowing the movement of the lubricating oil are provided. For example, even when the oil supply means side of the horizontal hermetic compressor rises due to the inclination of the vehicle, the partition walls are partitioned by the partition walls. The electric element side in the closed container is supplied. Since the pressure from the unit side is set to be higher configuration, lubricating oil stored in the oil supply means side of the sealed vessel partition wall it is possible to prevent the flow out into the electric element side a barrier. As a result, a decrease in the oil level of the lubricating oil stored on the side of the oil supply means in the closed container can be minimized, and a decrease in lubrication performance can be prevented. Therefore, even when the oil supply means side of the horizontal hermetic compressor is tilted at a high angle, a predetermined amount of lubricating oil can be stored in the oil supply means side in the closed container, so that the oil supply means is in the oil supply means side in the closed container. The lubricating oil sucked from the cylinder can be reliably supplied to the cylinder and the bearing frame.

Further, in addition to the above, the vehicle-mounted horizontal hermetic compressor according to the second aspect of the present invention discharges the refrigerant gas discharged from the compression element to the electric element side in the hermetic container through the outside of the hermetic container. Since the external pipe for causing the refrigerant to flow is provided in the closed container, the high-temperature refrigerant gas discharged from the compression element can be cooled by radiating heat in the process of passing through the external pipe.
Thereby, for example, even when the temperature of the horizontal hermetic compressor rises using a refrigerant such as carbon dioxide as in the embodiment, the cooling efficiency of the refrigerant discharged from the compressor can be significantly improved. Become like

Further, in the vehicle-mounted horizontal hermetic compressor according to the third aspect of the present invention, in addition to the first or second aspect, the compression element comprises a plurality of rotary compression elements provided between both partition walls. Therefore, for example, the electric element side is high between the partition walls and the oil supply means side is low, so that an intermediate pressure is easily generated between the partition walls in the middle. This makes it easier to press the lubricating oil against the oil supply means due to the pressure difference between the partition walls. Therefore, even when the oil supply means side of the horizontal hermetic compressor is tilted high, a predetermined amount of lubricating oil can be stored in the oil reservoir,
The lubricating means can surely lubricate the cylinder and the bearing frame with the lubricating oil sucked from the oil reservoir, and can greatly improve the lubricating performance.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a two-cylinder rotary compressor having first and second rotary compression elements as an embodiment of a vehicle-mounted horizontal hermetic compressor according to the present invention.

FIG. 2 is a longitudinal sectional side view of a two-cylinder rotary compressor in which an oil pump side is inclined higher with respect to an electric element side of the vehicle-mounted horizontal hermetic compressor of FIG. 1;

FIG. 3 is a vertical sectional side view of a two-cylinder rotary compressor in which the electric element side is inclined higher with respect to the oil pump side of the horizontally mounted hermetic compressor of FIG. 1;

FIG. 4 shows another example of the horizontal mounted hermetic compressor mounted on a vehicle, which is another example having the first and second rotary compression elements.
It is a vertical side view of the rotary compressor of a cylinder.

5 is a vertical sectional side view of the rotary compressor of the 2 cylinders were highly inclined oil pump side to the electric component side of the vehicle transverse standing hermetic compressor in FIG 4.

FIG. 6 is a vertical sectional side view of a two-cylinder rotary compressor in which the electric element side is inclined higher with respect to the oil pump side of the horizontally mounted hermetic compressor of FIG. 4;

FIG. 7 is a longitudinal sectional side view of a one-cylinder rotary compressor provided with a single rotary compression element as another embodiment of the vehicle-mounted horizontal hermetic compressor.

8 is a vertical sectional side view of a one-cylinder rotary compressor in which the oil pump side is inclined higher with respect to the electric element side of the vehicle-mounted horizontal hermetic compressor of FIG. 7;

9 is a vertical sectional side view of a one-cylinder rotary compressor in which the electric element side is inclined higher with respect to the oil pump side of the horizontally mounted hermetic compressor of FIG. 7;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotary compressor 2 first rotary compression element 3 second rotary compression element 4 hermetic container 6 electric element 8 compression element 11 terminal 12 oil reservoir 36 intermediate partition plate 38 cylinder 40 cylinder 57 muffler cover 59 muffler cover 64 external piping 66 Oil pump 67 Oil suction pipe 72 Partition wall 73 Partition wall

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shoji Yamanaka 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Dai Matsuura 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture No. 5 Sanyo Electric Co., Ltd. F term (reference) 3H003 AA05 AB05 AC03 BD07 CD01 CD06 3H029 AA04 AA09 AA15 AB03 BB06 CC02 CC07 CC09 CC22 CC34

Claims (3)

[Claims] 1. An electric element provided in a closed container with a rotation axis directed laterally, a compression element driven by the electric element, lubricating oil contained in the closed container, and the compression element Oil supply means for sending the lubricating oil to the compression element, wherein the refrigerant gas sucked from outside the closed container is compressed by the compression element, and the closed container is After discharging to the electric element side in
While discharging from the oil supply means side to the outside of the closed container, a partition partitioning the inside of the closed container while allowing the movement of the refrigerant gas and the lubricating oil on the electric element side and the oil supply means side of the compression element. A horizontal hermetic compressor mounted on a vehicle, each of which is provided. 2. The closed container is provided with an external pipe for discharging the refrigerant gas discharged from the compression element through the outside of the closed container to the electric element side in the closed container. The on-vehicle horizontal hermetic compressor according to claim 1. 3. The on-vehicle horizontal hermetic compressor according to claim 1, wherein the compression element comprises a plurality of rotary compression elements provided between the partition walls.