JP2000213324A - Engine oil supply device, and air conditioner equipped with the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constantly and properly ensure and maintain the quanity of engine oil supplied to an engine. SOLUTION: In this supply device 32, engine oil reservoired in an oil tank 33 is adequately supplied to an oil pan 31 in the lower part of a gas engine 30. In this case, the tank 33 is comprised of a first tank bath 38 communicated with the pan 31, and a second tank bath 39 for reservoiring unused engine oil, and the unused oil is supplied to the bath 38 from the bath 39 by operating a supply pump 34, and also the unused oil from the pump 34 is flowed to be housed in the bath 38; moreover a shielding tube 35 for flowing the unused oil into the bath 38 is arranged, and when the unused oil in the bath 38 exceeds a specified level, the unused oil in the tube 35 is returned to the bath 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine oil replenishing device for replenishing an engine with engine oil and an air conditioner provided with the engine oil replenishing device.

[0002]

2. Description of the Related Art A gas heat pump type air conditioner employs a gas engine as a drive source of a compressor, and a cogeneration system employs a gas engine as a drive source of a generator. This gas engine is lubricated with engine oil, and an oil pan for storing engine oil is arranged below the engine. Unused engine oil is supplied to the oil pan from the engine oil supply device.

[0003] The first conventional engine oil supply device is
As shown in FIG. 6, a first oil tank 11 is connected to an oil pan 13 disposed below the gas engine 10 via a hose 14, and a second oil tank installed immediately above the first oil tank 11 is provided. The tank 12 is connected to the first oil tank 11 via a hose 16 provided with an electromagnetic valve 15.

In this conventional first engine oil replenishing device, the oil pan 13, the first oil tank 11, and the second oil tank 12 secure a sufficient amount of engine oil to suppress deterioration of the engine oil, Thereby, the oil change interval is set long. Note that reference numeral 17
Is a circulation pump for circulating engine oil between the oil pan 13 and the first oil tank 11.

In the first oil tank 11, a level switch 18 for detecting an oil level in the first oil tank 11 is provided. This level switch 1
8 detects that the oil level in the first oil tank 11 has dropped, the solenoid valve 15 is opened, and unused engine oil is supplied from the second oil tank 12 to the first oil tank 11. . When the level switch 18 detects that the oil level in the first oil tank 11 has reached the specified level, the solenoid valve 15 is closed and the supply of engine oil to the first oil tank 11 ends. .

On the other hand, FIG. 7 shows a second conventional engine oil supply device. In this second conventional engine oil replenishing device, the same parts as those of the first conventional engine oil replenishing device in FIG. 6 are denoted by the same reference numerals.

In the second conventional engine oil replenishing device, the second oil tank 12 can be arranged in a place other than immediately above the first oil tank 11, and the second oil tank 12 is disposed in the first oil tank 11. And a hose 19 </ b> A provided with a supply pump 19.

When the level switch 18 installed in the first oil tank 11 detects a decrease in the oil level in the first oil tank 11, the replenishing pump 19 is driven and the first oil tank 12 Unused engine oil is supplied into the oil tank 11. When the level switch 18 detects that the oil level in the first oil tank 11 has reached the specified level, the supply pump 19 is stopped, and the supply of the engine oil to the first oil tank 11 ends.

[0009]

In the first conventional engine oil replenishing device shown in FIG. 6 and the second conventional engine oil replenishing device shown in FIG. Good quality engine oil is replenished from 12 to the oil pan 13 via the first oil tank 11.

However, in these conventional first and second engine oil replenishing devices, when the level switch 18 fails in the "low level" state, more engine oil is replenished than necessary from the second oil tank 12, Oil pan 1
The engine oil may overflow from the third oil tank 11 or the first oil tank 11. This phenomenon also occurs when dust or the like is caught in the valve seat of the solenoid valve 15 in the first conventional engine oil supply device.

In the first and second conventional engine oil replenishers described above, if the level switch 18 fails in the "high level" state, the oil pan 13 and the first oil tank 11 run short of engine oil, As a result, the deterioration of the engine oil accelerates, abnormal wear occurs inside the gas engine 10, and the gas engine 10 may be damaged.

An object of the present invention has been made in view of the above circumstances, and provides an engine oil replenishing apparatus and an air conditioner capable of always ensuring and maintaining a good quality of engine oil supplied to an engine. It is in.

[0013]

According to a first aspect of the present invention, there is provided an engine oil replenishing apparatus for appropriately replenishing an engine pan stored in an oil tank to an oil pan below the engine. A first tank communicating with the oil pan; and a second tank capable of storing unused engine oil. The second tank is supplied from the second tank to the first tank by operating a supply pump. While the used engine oil is replenished,
In the first tank portion, a shielding member that receives and stores unused engine oil from the replenishing pump and that flows out into the first tank portion is disposed, and the engine oil in the first tank portion is set to a specified level. , Only the unused engine oil in the shielding member is returned to the second tank portion.

According to a second aspect of the present invention, in the first aspect of the present invention, the operation of the supply pump is determined based on an integrated value of an engine operation time.

[0015] The third aspect of the present invention is the first or second aspect.
In the invention described in 1, the first tank portion and the second tank portion of the oil tank are integrated, and the first tank portion and the second tank portion define a partition plate for defining the oil level of the first tank portion. Is characterized by the following.

The invention described in claim 4 is the first or second invention.
Wherein the first tank portion and the second tank portion of the oil tank are separated from each other, and the oil level of the first tank portion is defined by a notch in a shielding member. It is.

According to a fifth aspect of the present invention, there is provided an outdoor unit having a compressor and an outdoor heat exchanger, and an indoor unit having an indoor heat exchanger, wherein the compressor is driven by an engine. In an air conditioner in which engine oil is replenished from an engine oil replenishing device to an oil pan arranged at a lower portion of an engine, the engine oil replenishing device appropriately supplies engine oil stored in an oil tank to the oil pan. Replenishing, the oil tank comprises a first tank portion communicating with the oil pan, and a second tank portion capable of storing unused engine oil; Unused engine oil is supplied to the section by operating the supply pump, and unused engine oil from the supply pump is supplied to the first tank section. And a shielding member that flows out into the first tank portion is disposed, and when the engine oil in the first tank portion exceeds a specified level, only unused engine oil in the shielding member is used. It is configured to be returned to the second tank portion.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the operation of the supply pump is determined based on an integrated value of an engine operation time.

The invention described in claim 7 is the fifth or sixth invention.
In the invention described in 1, the first tank portion and the second tank portion of the oil tank are integrated, and the first tank portion and the second tank portion define a partition plate for defining the oil level of the first tank portion. Is characterized by the following.

The invention described in claim 8 is the invention according to claim 5 or 6.
In the invention described in (1), the first tank portion and the second tank portion of the oil tank are configured separately, and the oil level of the first tank portion is defined by a notch of a shielding member. Things.

The invention according to claim 1 or 5 has the following operation.

In the first tank portion of the oil tank, there is disposed a shielding member that receives and stores unused engine oil from the replenishing pump and flows out into the first tank portion. When the oil exceeds the specified level, only the unused engine oil in the shielding member is configured to be returned to the second tank portion of the oil tank. Good engine oil is stored, and as a result, the quality of engine oil supplied to the engine can always be ensured and maintained in good condition.

The invention according to claim 2 or 6 has the following operation.

By previously recognizing the engine oil consumption rate during the operation of the engine, the amount of reduction (consumption) of the engine oil in the oil pan can be determined from the integrated value of the engine operation time. Therefore, by determining the operation of the supply pump based on the integrated value of the engine operation time, a required amount of engine oil can be supplied to the oil pan or the first tank portion of the oil tank. Acceleration of deterioration of the engine can be suppressed, and abnormal wear of the engine can be prevented.

Further, even if excessive engine oil is replenished from the second tank portion to the first tank portion by operating the replenishing pump, the surplus engine oil in the unused state of good quality is used for the shielding member of the first tank portion. Is returned to the second tank portion, so that the phenomenon that the engine oil overflows from the oil pan or the first tank portion can be prevented.

Further, since the operation of the supply pump is determined based on the engine operation time, there is no need to install a level switch for detecting the level of the engine oil in the oil pan or the first tank. The oil supply device can be simplified.

The invention according to claim 3 or 7 has the following operation.

Since the first tank portion and the second tank portion of the oil tank are integrated, the engine oil supply device can be made compact, and the installation area of the device can be minimized.

The invention according to claim 4 or 8 has the following operation.

Since the first tank portion and the second tank portion of the oil tank are separated from each other, the first tank portion and the second tank portion can be respectively installed at different positions, and the engine oil The degree of freedom in installing the replenishing device can be expanded.

[0031]

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

[A] First Embodiment (FIGS. 1, 2, and 3) FIG. 1 is a configuration diagram showing a first embodiment of an engine oil supply device according to the present invention. FIG. 2 shows FIG.
FIG. 2 is a refrigerant pipeline diagram illustrating an air conditioner including the engine oil replenishing device of FIG.

The air conditioner 20 shown in FIG.
7. The outdoor unit 27 includes the indoor units 28A and 28B. The outdoor unit 27 includes a compressor 21, a four-way valve 22, an outdoor heat exchanger 23, and an outdoor expansion valve 24. The indoor unit 28A includes an indoor expansion valve 25A and an indoor heat exchanger 26A,
The indoor unit 28B includes an indoor expansion valve 25B and an indoor heat exchanger 26B.

In such an air conditioner 20, during the cooling operation, the refrigerant discharged from the compressor 21 is supplied to the four-way valve 22.
Through to the outdoor heat exchanger 23, where it is condensed,
After being expanded and decompressed by the indoor expansion valves 25A and 25B via the outdoor expansion valve 24 (in the fully open state during the cooling operation) and evaporated by the indoor heat exchangers 26A and 26B, the air is returned to the compressor 21 via the four-way valve 22. And the indoor heat exchangers 26A, 26A
Cool the room at B.

In the heating operation of the air conditioner 20,
The refrigerant discharged from the compressor 21 reaches the indoor heat exchangers 26A and 26B via the four-way valve 22, where it is condensed to heat the room, and then reaches the outdoor expansion valve 24 via the indoor expansion valves 25A and 25B. After being expanded and reduced in pressure here, it reaches the outdoor heat exchanger 23 where it is evaporated and returned to the compressor 21 via the four-way valve 22.

The air conditioner 20 is a gas heat pump type air conditioner in which the compressor 21 is driven by a gas engine 30. The air conditioner 20 replenishes an oil pan 31 disposed below the outdoor unit 27 with engine oil. The engine oil is appropriately supplied from the device 32.

The engine oil replenishing device 32 shown in FIG.
As shown in the figure, the oil tank 33 includes a replenishing pump 34, a shielding cylinder 35 as a shielding member, a circulation pump 36, and a control device 40.

The oil tank 33 has a partition plate 37 inside.
Is arranged. This partition plate 37 allows the oil tank 33
Are divided into a first tank tank 38 as a first tank section and a second tank tank 39 as a second tank section. Accordingly, the first tank tank 38 and the second tank tank 39 are integrally formed, and each of them can store engine oil. The capacity of the first tank tank 38 is, for example, 15 liters, the capacity of the second tank tank 39 is, for example, 20 liters, and the capacity of the oil pan 31 is, for example, 5 liters. The oil pan 31, the first tank tank 38, and the second tank tank 39 ensure a sufficient amount of engine oil (for example, 40 liters) to suppress deterioration of the quality of the engine oil. The service life is prolonged, and as a result, the engine oil replacement interval is lengthened.

The oil pan 31 and the first tank 38 are arranged at the same horizontal position and communicate with each other by a first communication hose 41. The engine oil is supplied from the first tank tank 38 to the oil pan 3 via the first communication hose 41.
1 and the capacity of the oil pan 31 becomes, for example, 20 liters in a pseudo manner. Further, the first tank tank 38 and the oil pan 31 are connected by a second communication hose 42 in which a circulation pump 36 is provided. The circulation pump 36 is controlled by the control device 40, and is started when the circulation of the engine oil between the oil pan 31 and the first tank tank 38 is insufficient with the first communication hose 41 alone.
The circulation of the engine oil between the oil pan 31 and the first tank 38 is promoted.

The replenishing pump 34 is disposed on a replenishing hose 43, and its operation is controlled by a control device 40 as described later. The supply hose 43 has a suction end at the oil tank 3.
3 is located near the bottom surface of the second tank 39, and the discharge end is located above or inside the shielding cylinder 35.

In the second tank 39 of the oil tank 33, unused engine oil of good quality (that is, not degraded in quality) is stored as described later. By the operation of the replenishing pump 34, the unused high quality engine oil stored in the second tank 39 is removed from the shielding cylinder 3.
5, and is supplied into the first tank 38. As a result, the quality of the engine oil in the oil pan 31 and the first tank tank 38 is improved, and the degree of deterioration of the engine oil in the oil pan 31 and the first tank tank 38 is maintained at a predetermined level. Is properly lubricated.

The shielding cylinder 35 is disposed above the inside of the first tank 38. As shown in FIG. 3, the shielding tube 35 has a cylindrical or rectangular tube shape, or a box shape having an opening on the bottom surface, and has a notch 44 formed at the upper edge. The engine oil in the first tank 38 is initially contained in the shielding cylinder 35. When the unused engine oil in the second tank 39 that has flowed out of the discharge end of the supply hose 43 flows into the shielding cylinder 35 by the operation of the supply pump 34, the inflowing engine oil is already in the shielding cylinder 35. The stored engine oil in the first tank tank 38 is pushed out from the lower part of the shielding cylinder 35 and flows out.
Inside 5 is only the unused engine oil in the second tank 39. Then, the unused engine oil stored in the shielding cylinder 35 flows out of the shielding cylinder 35 into the first tank 38. As a result, high-quality unused engine oil in the second tank 39 is supplied to the first tank 38 via the shielding cylinder 35 by the operation of the supply pump 34.

The oil level of the first tank 38 is
It is defined by the upper edge 45 of the partition plate 37. This upper edge 4
5 is set above the lower edge 46 of the notch 44 of the shielding cylinder 35. Therefore, when excess engine oil exceeding the specified level of the first tank tank 38 is replenished from the second tank tank 39 into the first tank tank 38 via the shield cylinder 35, the unreacted oil contained in the shield cylinder 35 is not refilled. Only the used engine oil passes through the notch 44, passes over the upper edge 45 of the partition plate 37, and is returned into the second tank 39.

The engine oil returned to the second tank tank 39 is only unused high-quality engine oil due to the action of the shielding cylinder 35.
It is prevented that the deteriorated engine oil stored in the first tank tank 38 and the second tank tank 39 is mixed with the engine oil stored therein. Second tank tank 3
When the deteriorated engine oil is mixed with the high quality engine oil in the second tank 9, the engine oil in the second tank 39 is supplied to the second tank 39 until the first tank 38 is refilled. Within which the deterioration of quality is accelerated. Therefore, by not returning the deteriorated engine oil in the first tank tank 38 to the second tank tank 39, the acceleration of the above-described deterioration of the engine oil quality is avoided.

The controller 40 controls the operation of the supply pump 34 based on the integrated value of the operation time of the gas engine 30 while appropriately operating the circulation pump 36 as described above. That is, the control device 40 determines the oil pan 31 based on the engine oil consumption rate during the operation of the gas engine 30.
And the amount of decrease in engine oil (engine oil consumption) in the first tank tank 38 is calculated. Determine based on the value. Further, the control device 40 controls the supply pump 3
The timing for terminating the operation of the supply pump 34 is determined based on the count value of the sub timer 49 that counts the operation time of the supply pump 34 from the discharge capacity of No. 4.

For example, assume that the engine oil consumption rate during the operation of the gas engine 30 is 2 cc / h, and the discharge capacity of the supply pump 34 is 100 cc / min. If the engine oil is replenished from the second tank tank 39 to the first tank tank 38 every time the engine oil consumption reaches 200 cc, the control device 40 operates the gas engine 30 from 200 cc / 2 cc / h = 100 h. Every time the time reaches 100 hours, the operation of the replenishing pump 34 is started based on the count value of the main timer 48, and unused high-quality engine oil is supplied from the second tank tank 39 to the first tank tank 38. Replenish. Then, the control device 40 recognizes from the count value of the sub-timer 49 that the operation time of the supply pump 34 has become 2 minutes from 200 cc２００100 cc / min = 2 min, and terminates the operation of the supply pump 34 at this time. And the gas engine 30
The first tank tank 38 is replenished with unused engine oil in an amount that balances the consumed amount of engine oil.

However, in practice, the engine oil consumption rate varies depending on the number of revolutions of the gas engine 30 and individual differences between the gas engines 30, and the discharge capacity of the supply pump 34 also varies depending on the temperature of the engine oil. Occurs. Therefore, the control device 40 replenishes the first tank 38 from the second tank 39 with an amount of engine oil that is greater than or equal to the amount of engine oil consumed by the gas engine 30 in consideration of these variations. For example, the control device 40
In the above example, the supply pump 34 is operated for 3 minutes in the above-described example to supply excess engine oil from the second tank tank 39 to the first tank tank 38, and the excess engine oil (as described above, unused high-quality unused Engine oil only),
The shield tank 35 and the partition plate 37 return to the second tank 39.

Therefore, according to the above embodiment, the following effects are obtained.

In the first tank tank 38 of the oil tank 33, there is disposed a shielding cylinder 35 that receives and stores unused engine oil from the replenishing pump 34 and flows out into the first tank tank 38. When the engine oil in the first tank tank 38 exceeds the specified level, only the unused engine oil in the shielding cylinder 35 is returned to the second tank tank 39 of the oil tank 33. Unused engine oil of good quality is always stored in the second tank tank 39, and as a result, the quality of engine oil supplied to the gas engine 30 can always be ensured and maintained in good condition. it can.

By recognizing the engine oil consumption rate during operation of the gas engine 30 in advance,
Oil pan 31 and first tank 3 of oil tank 33
8, the amount of decrease in engine oil (ie, engine oil consumption) can be determined from the integrated value of the operation time of the gas engine 30. Therefore, the control device 40 supplies the required amount of engine oil to the oil pan 31 and the first tank 38 of the oil tank 33 by determining the operation of the supply pump 34 based on the integrated value of the operation time of the gas engine 30. Therefore, the acceleration of deterioration of the engine oil due to the decrease of the engine oil can be suppressed, and the gas engine 3
0 abnormal wear can be prevented.

By operating the supply pump 34, the second tank 39 in the oil tank 33 is moved from the first tank 3
Even if excess engine oil is supplied to the oil pan 8, since the shielding cylinder 35 in the first tank tank 38 is configured to return unused surplus engine oil of good quality to the second tank tank 39, the oil pan 31 Alternatively, the phenomenon that the engine oil overflows from the first tank tank 38 can be prevented.

The operation of the supply pump 34 is performed by the gas engine 3
Since it is determined based on the operation time of 0, there is no need to install a level switch for detecting the level of the engine oil in the oil pan 31 or the first tank tank 38. As a result, the engine oil supply device 32 is simplified. it can.

Since the first tank 38 and the second tank 39 of the oil tank 33 are integrated, the engine oil replenishing device 32 can be made compact, and the installation area of the engine oil replenishing device 32 can be minimized. .

[B] Second Embodiment (FIGS. 4 and 5) FIG. 4 is a configuration diagram showing a second embodiment of the engine oil supply device according to the present invention. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the engine oil supply device 50 of the second embodiment, a first oil tank 51 as a first tank portion and a second oil tank 52 as a second tank portion of an oil tank 53 are separated. It is configured. Then, the shielding cylinder 3 is provided above the first oil tank 51.
5 are arranged. The lower edge 46 of the notch 44 in the shielding cylinder 35 defines the oil level of the engine oil stored in the second oil tank 52.

The first oil tank 51 and the second oil tank 52 are connected by a reflux hose 54.
The inflow end of the reflux hose 54 is provided with the notch 4
4 is attached to an oil receiving portion 56 fixed to the wall surface 55 of the first oil tank 51. The outflow end of the reflux hose 54 is positioned above the second oil tank 52.

The engine oil replenished from the second oil tank 52 into the first oil tank 51 via the shield cylinder 35 by the operation of the supply pump 34 is set by the lower edge 46 of the notch 44 of the shield cylinder 35. Above the specified level, only unused high-quality engine oil contained in the shielding cylinder 35 overflows from the notch 44 of the shielding cylinder 35 and passes through the oil receiving portion 56 into the recirculation hose 54. And returns to the second oil tank 52.

Therefore, this embodiment also has the following effects in addition to the effects similar to the effects of the first embodiment.

The first oil tank 5 of the oil tank 53
Since the first oil tank 52 and the second oil tank 52 are separated from each other, the first oil tank 51 and the second oil tank 52 can be installed at different positions, respectively. The degree of freedom can be expanded.

Although the present invention has been described based on the above embodiment, the present invention is not limited to this.

For example, in the above embodiment, the first tank tank 38 of the oil tank 33 and the first oil tank 51 of the oil tank 53 have been described in which the level switch for detecting the level of the engine oil is omitted. A level switch may be provided in the first tank tank 38 and the first oil tank 51, and a detection signal from the level switch may be output to the control device 40. In this case, the control device 4
0 indicates that the operation of the supply pump 34 is not controlled based on the integrated value of the operation time of the gas engine 30, and the “level low” of the engine oil in the first tank tank 38 and the first oil tank 51 is detected by the level switch. At this point, the operation of the supply pump 34 is started. Also, the control device 40
Indicates the "high level" of the engine oil in the first tank tank 38 and the first oil tank 51 by the level switch.
Is detected, the operation of the supply pump 34 is terminated.

The control device 40 starts the operation of the replenishing pump 34 based on the integrated value of the operation time of the gas engine 30 and controls the level of the engine oil in the first tank 38 and the first oil tank 51 by the level switch. When the “high level” is detected, the operation of the supply pump 34 may be terminated. Further, the operation of the replenishing pump 34 is started when the “low level” of the engine oil in the first tank tank 38 and the first oil tank 51 is detected by the level switch, and the integrated value of the operating time of the replenishing pump 34 is calculated. The operation of the supply pump 34 may be terminated based on the operation.

In the above embodiment, the engine oil replenishing devices 32 and 50 are applied to the air conditioner 20. However, the present invention may be applied to a cogeneration system in which a gas engine drives a generator.

[0064]

According to the engine oil replenishing device according to the first aspect of the present invention and the air conditioner according to the fifth aspect of the present invention, the oil tank has a first tank portion communicating with the oil pan, A second tank portion capable of storing unused engine oil. The operation of the replenishment pump from the second tank portion to the first tank portion supplies unused engine oil to the first tank portion. In the tank portion, a shielding member that receives and stores unused engine oil from the replenishing pump and that flows out into the first tank portion is arranged, and when the engine oil in the first tank portion exceeds a specified level. In addition, since only unused engine oil in the shielding member is configured to be returned to the second tank portion, high quality engine oil is always stored in the second tank portion. To become, as a result, it can always be secured satisfactorily maintaining the quality of the engine oil to be supplied to the engine.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of an engine oil supply device according to the present invention.

FIG. 2 is a refrigerant pipeline diagram showing an air conditioner including the engine oil replenishing device of FIG.

FIG. 3 is an enlarged perspective view showing a part (dashed line) of FIG. 1;

FIG. 4 is a configuration diagram showing a second embodiment of the engine oil supply device according to the present invention.

FIG. 5 is an enlarged perspective view showing a part of FIG. 4;

FIG. 6 is a configuration diagram showing a first conventional engine oil supply device.

FIG. 7 is a configuration diagram showing a second conventional engine oil supply device.

[Explanation of symbols]

 Reference Signs List 20 air conditioner 21 compressor 23 outdoor heat exchanger 26A, 26B indoor heat exchanger 30 gas engine 31 oil pan 32 engine oil replenishing device 33 oil tank 34 replenishment pump 35 shielding cylinder (shielding member) 40 control device 37 partition plate 38 First tank tank (first tank section) 39 Second tank tank (second tank section) 43 Supply hose 44 Notch 50 Engine oil supply device 51 First oil tank (first tank section) 52 Second oil tank (second tank section) Two tanks) 53 Oil tank 54 Reflux hose

Claims (8)

[Claims] 1. An engine oil replenishing device for replenishing an oil pan stored in an oil tank to an oil pan below an engine, wherein the oil tank comprises: a first tank portion communicating with the oil pan; A second tank portion capable of storing engine oil, wherein unused engine oil is supplied from the second tank portion to the first tank portion by operating a supply pump, and the first tank In the unit, a shielding member that receives and stores unused engine oil from the replenishment pump and that flows out into the first tank unit is disposed, and when the engine oil in the first tank unit exceeds a specified level. In addition, only the unused engine oil in the shielding member is configured to be returned to the second tank portion. Feeding device. 2. The engine oil supply device according to claim 1, wherein the operation of the supply pump is determined based on an integrated value of an engine operation time. 3. A first tank portion and a second tank portion of the oil tank are integrated, and the first tank portion and the second tank portion are separated by a partition plate for defining an oil level of the first tank portion. 3. The engine oil replenishing device according to claim 1, wherein the engine oil replenishing device is partitioned. 4. The oil tank according to claim 1, wherein a first tank portion and a second tank portion of the oil tank are separated from each other, and an oil level of the first tank portion is defined by a notch of a shielding member. 3. The engine oil replenishing device according to 1 or 2. 5. An outdoor unit having a compressor and an outdoor heat exchanger, and an indoor unit having an indoor heat exchanger, wherein the compressor is driven by an engine and is arranged below the engine. In an air conditioner in which engine oil is replenished from an engine oil replenishing device to an oil pan, the engine oil replenishing device replenishes the oil pan with engine oil stored in an oil tank, and the oil tank comprises: A first tank portion communicating with the oil pan, and a second tank portion capable of storing unused engine oil, from the second tank portion to the first tank portion by operating a replenishing pump. Unused engine oil is replenished, and unused engine oil from the replenishment pump is allowed to flow into and stored in the first tank portion. A shielding member that flows into the tank portion is arranged, and when engine oil in the first tank portion exceeds a prescribed level, only unused engine oil in the shielding member is returned to the second tank portion. An air conditioner characterized by being performed. 6. The air conditioner according to claim 5, wherein the operation of the supply pump is determined based on an integrated value of an engine operation time. 7. A first tank portion and a second tank portion of the oil tank are integrated, and the first tank portion and the second tank portion are separated by a partition plate for defining an oil level of the first tank portion. The air conditioner according to claim 5 or 6, wherein the air conditioner is partitioned. 8. The oil tank according to claim 1, wherein a first tank portion and a second tank portion of the oil tank are separated from each other, and an oil level of the first tank portion is defined by a notch of a shielding member. Item 7. The air conditioner according to item 5 or 6.