JPH08177448A - Engine driving motive power device - Google Patents

Abstract

PURPOSE: To prevent an accident due to lubricating failure by improving a supplying function of engine oil in an engine driving motive power device such as an engine driving heat pump device. CONSTITUTION: Engine oil 11a in an oil pan 11 lubricates each part of an engine 1. A liquid level lowest limit detector L2 gives a detection signal to a control part 7 at the time when the engine oil 11a is reduced down to a specified level. The control part 7 opens an opening and closing valve V1 and supplies unused engine oil 11b into the oil pan 11 from an oil sub tank 12 until it is provided with a detection signal from a liquid level upper limit detector L1. The control part 7, when accumulated total driving time of the engine 1 reaches a specified value, opens an opening and closing valve V2 and supplies the engine oil 11a in the same way after discharging it to a waste oil tank until it is provided with a detection signal from the liquid level lowest limit level detector L2. As oil exchange is forcibly carried out by the accumulated total driving time even in the case when consumption of the engine oil 11a is small, it is possible to prevent an accident due to lubricating failure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine, that is, an engine drive power unit for driving a driven device by the power of the engine.

[0002]

2. Description of the Related Art As an engine driving power unit of this type, there are an automobile using an engine as a power source and a heat pump unit for cooling and heating with a refrigerant pressurized in a compression unit using an engine as a power source.

The engine drive power unit 100 is
In the heat pump device configured as described above, for example, as shown in FIG. 13, an indoor unit 80 for air conditioning in which a heat source from a heat source device 10 that obtains a heat source for cooling or heating using the engine 1 as a power source is arranged indoors. Japanese Patent Application Laid-Open No. 3-286945 discloses a configuration (hereinafter, referred to as a first conventional technique) in which the components are connected to each other to perform cooling or heating.

In FIG. 13, the circuit portion indicated by the bold line is
A heat-operated fluid for obtaining a heat source, for example, a conduit of a refrigerant, a circuit portion indicated by a thin line is an electric path for an electrical detection signal / control signal, and the heat source device 10 is generally
Since it is placed outdoors, it is also called an outdoor unit, but it may be placed indoors. Further, the heat source is supplied from one heat source unit 10 to a plurality of indoor units.

Then, the engine 1 drives a compressor of the compression section 2, for example, a rotary compressor, pressurizes a heat-operated fluid for obtaining a heat source, for example, a refrigerant such as Freon R22, and heat-operates in the compressor. The oil that has been mixed with the fluid is supplied to the heat operation unit 3 through an oil separator 21 for separating the oil.

The heat operating section 3 performs the required heat operation necessary for cooling or heating with the heat operating fluid, and after the heat operation is finished, the heat operating fluid whose pressure has been reduced is supplied again to the compression section 2 via the accumulator 22.

The engine oil storage portion 11 is a portion for storing engine oil 11a provided in the vicinity of the bottom portion of the engine 1 for lubricating the mechanical sliding portion between the inside of the engine 1 and the portion attached to the engine 1. The engine oil storage portion 11 is also generally called an oil pan.

Further, the engine oil 11a gradually deteriorates with the operation of the engine 1, and when the engine 1 is operated for a long period of time, the required lubrication purpose cannot be achieved.
Need to be replaced.

The heat operating section 3 sends the pressurized heat operating fluid to a heat radiating heat exchanger X, that is, a condenser (not shown), radiates heat to condense it, and then heats the heat operating fluid to absorb heat. Exchanger Y, that is, a portion for performing circulation operation of the heat-operated fluid so as to be sent to an evaporator (not shown) to absorb heat, evaporate, and then be recovered.

When the indoor unit 80 is to perform a cooling operation, the conduit switching unit 4 connects the heat exchanger 81 on the indoor unit 80 side so as to operate as the heat absorbing heat exchanger Y, and When connecting the pipes so that the heat exchanger 5 on the side of the heat source device 10 operates as the heat exchanger X for radiating heat, and when performing the heating operation of the indoor unit 80, on the side of the heat source device 10 It is a part that connects the heat exchanger 5 so as to operate as the heat-absorption heat exchanger Y, and connects each conduit so that the heat exchanger 81 on the indoor unit 80 side operates as the heat-dissipation heat exchanger X. , A line switching mechanism that electrically operates a switching valve such as a four-way valve.

The heat exchanger 5 is a heat exchanger in which a meandering pipe that circulates a heat-operated fluid is provided with cooling fins, and the outside air is blown by a blowing mechanism to radiate or absorb heat. is there.

The heat exchanger 81 has a structure similar to that of the heat exchanger 5, and provides a recirculation of indoor air by a blower mechanism so as to absorb heat from the indoor air during cooling and radiate it to the indoor air during heating. Is a heat exchanger.

In the structure as shown in FIG. 13, the part for cooling and heating by compressing and circulating the heat-operated fluid by the compression part 2 constitutes a driven device driven by the power of the engine 1. Become.

The heat source capacity for cooling or heating is determined by the volume of the compressor, the pressure Pa of the heat operating fluid sent from the oil separator 21, and the pressure Pb of the heat operating fluid returned to the accumulator 22. Is determined by the product of the pressure difference Pc and the rotation speed of the engine 1 (in the case of an engine with a reciprocating stroke, the rotation speed of the crankshaft), that is, the engine rotation speed N.

Therefore, on the heat source device 10 side, the heat source device 10
The detected values of the temperature / pressure of each part of the side heat operation fluid and the set values set from the setting operation part 6 are given to the control part 7, and the indoor temperature from the indoor unit 80 side and the setting operation part 83 are provided.
The control unit 7 sends a set value of a set temperature as a control target for cooling or heating set by the control unit 82 to the control unit 7, and the arithmetic processing function of the control unit 7 calculates the required engine speed from these values. A control signal for operating at the calculated rotational speed is given from the control unit 7 to a required portion of the engine 1 for control. Further, a setting signal for adding a specific condition to this control is given from the setting operation unit 6 to the control unit 7 to perform a required limited operation or the like.

Further, on the outdoor unit 80 side, a blower (not shown) that recirculates the indoor air by the control unit 82 based on the set temperature for the purpose of cooling or heating from the operation unit.
And the flow control valve (not shown) of the heat-operated fluid passing through the heat exchanger 81.

The engine drive power unit 100 as described above.
In the case where the engine oil deteriorates due to contamination, lubrication of various parts of the engine is hindered, an unexpected failure is caused in the engine part, and the operation of the entire apparatus is disabled.

In order to prevent such an unexpected failure, as shown in FIG. 14, a required amount of spare oil is stored in the engine oil storage portion 11, that is, the attached oil supply tank 12 provided separately from the oil pan 11. 11b, that is, the unused engine oil is stored in advance, and the oil supply tank 1
A configuration in which the unused new engine oil 11b is replenished from 2 to the oil pan 11 (hereinafter referred to as the second related art).
Japanese Patent Application Laid-Open No. 5-272232 based on the applicant's application
3, etc. The oil supply tank 12 is generally called an oil sub tank.

In FIG. 14, the liquid level upper limit detector L1 and the liquid level lower limit detector L2 are provided inside the oil pan 11,
Unused engine oil 11b from the oil subtank 12
Is for detecting the lower limit liquid level which is the limit for starting the replenishment and the upper limit liquid level which is the limit for stopping the replenishment, and is a detector such as a float switch.

Then, each detection output obtained by each of the detectors L1 and L2 is given to the control unit 7, and the control unit 7 operates / stops the pump 13 based on each detection output, so that the lower limit liquid level is reached. When it becomes, the replenishment of the unused engine oil 11b to the oil pan 11 is started, and the replenishment is controlled to be stopped when the upper limit liquid level is reached.

[0021]

In the engine drive power unit according to the above-mentioned second prior art, when a long time elapses while the amount of engine oil in the oil pan is small, first, in the oil pan, Since the engine oil deteriorates and the lubricating ability decreases, operating the engine in this state will cause a failure.

Furthermore, since the unused engine oil in the oil sub-tank is then oxidized,
There is an inconvenience that the provision of an oil sub-tank to store the reserve oil is completely wasted.

On the other hand, in the case where the engine oil is consumed in a large amount, wear impurities and the like caused by the wear of the respective parts remain in the engine oil. Therefore, simply replenishing the consumed amount will increase the concentration of wear impurities. As a result, the cost becomes higher and the wear of each part is accelerated, which shortens the life of the engine.

Therefore, there is a problem that it is desired to provide an engine driving power unit that does not have such inconvenience.

[0025]

According to the present invention, the driven device as described above is driven by the power of the engine, and engine oil for lubricating each part of the engine is stored in an oil pan provided near the bottom of the engine. With
In an engine drive power unit configured to refill the oil pan with the unused engine oil stored in an oil sub-tank separate from the oil pan,

Waste oil storage means provided with a waste oil tank for storing engine oil discharged from the oil pan as waste oil,

The detection output obtained by detecting that the liquid level of the engine oil in the oil pan has fallen below a predetermined value, or the accumulated operating time of the engine has reached a predetermined time value. A first configuration for providing a discharge replenishing means for performing the above-mentioned replenishment after performing the above-mentioned discharge based on the detection output obtained by detecting

In the engine drive power system similar to the first configuration, it is detected that the liquid level of the engine oil in the oil pan becomes a predetermined value or less, and the liquid level decrease detection output is output. A liquid level time detecting means for detecting that a cumulative time of the engine operating times has reached a predetermined time value and outputting a time lapse detection output,

After performing the above-mentioned discharge based on the above-described liquid level drop detection output and time-lapse detection output, the above-mentioned replenishment is performed, and a discharge replenishment renewal means for renewing the above total is provided. Configuration and

In the same engine drive power unit as the above-mentioned second structure, the waste oil tank is arranged below the oil pan, and only the opening / closing operation of the on-off valve provided in the flow path for discharging is performed. By means of opening and closing discharging means for discharging the above by

A third means for arranging the oil sub-tank above the oil pan and providing an on-off valve replenishing means for replenishing the oil only by the opening operation of the on-off valve provided in the flow passage for the replenishment. And the configuration of

In the same engine drive power unit as the third structure, the waste oil tank is arranged above the oil pan, the oil sub-tank is arranged below the oil pan, and the discharge is carried out. Each tank pump arrangement means for arranging a pump in a flow path in which the flow path for and the flow path for replenishment are common,

A fourth construction is provided in which pump discharge replenishing means is provided for operating the pump in a predetermined direction to perform the discharge, and then operating the pump in a direction opposite to the predetermined direction to perform the replenishment. When,

In the engine drive power system similar to the above-mentioned fourth structure, the oil sub-tank and the waste oil tank are integrally formed through a partition wall in the vertical direction, and the flow path for the discharge is formed. A fifth configuration in which each tank pump arranging means for arranging the pumps in a channel common to the above-mentioned channel for replenishment is provided;

In the same engine drive power unit as the above-mentioned fourth structure, the oil sub-tank and the waste oil tank are integrally formed through a horizontal partition wall, and a passage for the above-mentioned discharge is provided. A sixth configuration in which each tank pump arranging means for arranging the pumps in a flow passage having a common flow passage for replenishing is provided;

In the same engine drive power unit as the above-mentioned first structure, a waste oil storage means provided with a waste oil tank for storing engine oil discharged from the oil pan as waste oil,

Overflow means for matching the discharge side tip with a predetermined liquid level of the engine oil in the oil pan, and providing an overflow pipe having the other end side connected to the waste oil tank for discharging the above,

The detection output obtained by detecting that the liquid level of the engine oil in the oil pan becomes a predetermined value or less, or that the cumulative operating time of the engine reaches a predetermined time value. The above-mentioned problem can be solved by a seventh configuration or the like in which a replenishing means for replenishing the above is provided based on the detection output obtained by detecting

[0039]

When the amount of engine oil in the oil pan decreases and the liquid level of the engine oil drops below a predetermined level, or when the cumulative operating time of the engine reaches a predetermined time value, the engine oil in the oil pan After the oil is discharged to the waste oil tank, unused engine oil is replenished from the oil sub-tank, so that wear impurities are discharged to the waste oil tank side with the discharge of waste oil, and the wear impurities remaining in the engine oil in the oil pan are removed. As the amount decreases, the concentration of wear impurities is diluted by replenishing unused engine oil, and the additives in the decreased engine oil are prevented, for example, deterioration of fluidity at low temperature is prevented, and engine oil is oxidized. Is added to prevent the engine from running, so the engine drive It acts so as to prevent the whole of failure in advance.

Even when the amount of engine oil consumed in the oil pan is small, when the cumulative operating time reaches a predetermined time value, regardless of the amount of engine oil consumed,
Since the above-mentioned discharge and replenishment are performed, it acts to prevent accidents such as a failure of lubrication of various parts of the engine caused by the oxidized engine oil and a failure of the entire engine drive power unit.

[0041]

EXAMPLES Examples will be described below with reference to FIGS. 1 to 12, portions indicated by the same reference numerals as those in FIGS. 13 and 14 are portions having the same functions as the portions having the same reference numerals described in FIGS. 8 and 9.

[First Embodiment] First, a first embodiment will be described with reference to FIG. The first embodiment is configured such that the waste oil 11c can be discharged and the unused engine oil 11b can be replenished only by the opening operation of the opening / closing valve.

In FIG. 1, the oil sub-tank 12 is arranged above the oil pan 11, and the waste oil tank 1
4 is disposed below the oil pan 11, and further, an opening / closing valve V1 is provided in a flow path between the oil sub tank 12 and the oil pan 11, and a portion between the waste oil tank 14 and the oil pan 11 is provided. An on-off valve V2 is provided in the flow path,
The on-off valves V1 and V2 are normally closed.

The liquid level detected by the liquid level upper limit detector L1 is, for example, about 90% of the volume when the volume of the oil pan 11 is 5 to 6 liters. The liquid level detected by the lower limit detector L2 is about 70% of the above volume.

The control unit 7 is, for example, for performing control processing by a microprocessor, stores a required time value in a memory (not shown) attached to the microprocessor, and a clock circuit (attached to the microprocessor). (Not shown) measures the lapse of time and performs the required control by detecting the coincidence with the above required time value, and also performs the required control based on each detection output given from each detector. It is configured as follows.

When the engine oil 11a in the oil pan 11 is consumed and reaches the lower limit liquid level, the detection output from the liquid level lower limit detector L2 is given to the control unit 7, and this detection output, that is, the lower limit detection. Control unit 7 based on output
However, when the opening / closing valve V1 is opened, the unused engine oil 11b in the oil sub-tank 12 is replenished in the oil pan 11 due to the difference in the positions where the oil sub-tank 12 and the oil pan 11 are arranged vertically.

When the liquid surface level of the engine oil 11a reaches the upper limit liquid surface level, the detection output from the liquid surface upper limit detector L1 is given to the control section 7, and based on this detection output, that is, the upper limit detection output. , The control unit 7 has an on-off valve V1
Is closed, the "engine oil supply operation by detecting the liquid level" of the engine oil 11a is completed.

The control section 7 is provided with a control structure for performing "engine oil replenishment operation by detecting engine operating time" in addition to the above "engine oil replenishment operation by detecting liquid level".

Hereinafter, "engine oil replenishment operation by detecting engine operating time" will be described. The control unit 7 measures the cumulative time value t2 of all the operating times of the engine operation performed intermittently or continuously by the above clock circuit.

This cumulative time value t2 is compared with a predetermined time value T2 stored in the memory in advance, for example, 1000 hours, and when the cumulative time value t2 reaches the predetermined time value T2, the on-off valve V2 is opened. The engine oil 11a in the oil pan 11 is opened and discharged to the waste oil tank 14 as the waste oil 11c until the detection output from the liquid level lower limit detector L2 is obtained.

The subsequent operation is configured to be the same as the above-mentioned "engine oil replenishment operation by liquid level detection".

Note that the user or maintenance worker starts the counting of the cumulative time value t2 at the time of the first start of use, or discards the used engine oil, that is, the waste oil 11c and removes the unused engine oil 11b. Upon addition or replacement with a new one, the initial timekeeping update for updating the above timekeeping based on the input signal input by operating the operation unit (not shown) provided in the control unit 7, At the end of the "engine oil replenishment operation by detecting the liquid level" or the "engine oil replenishment operation by detecting the engine operating time", the above timekeeping is performed based on the signal at the time when the on-off valve V1 is closed. It is configured to start timing with the replenishment renewal to be renewed.

[Summary of Configuration of First Embodiment] In summary of the configuration of the first embodiment, a driven device, for example, a heat pump device is driven by the power of the engine 1 and each part of the engine 1 is lubricated. Engine oil 11a
Is stored in an oil pan 11 provided near the bottom of the engine 1 and is stored in an oil sub-tank 12 separate from the oil pan 11.
In the engine drive power unit 100 configured to supply oil to the oil pan 11,

Waste oil storage means provided with a waste oil tank 14 for storing the engine oil 11a discharged from the oil pan 11 as waste oil 11c,

A detection output obtained by detecting with a liquid level lower limit detector that the liquid level of the engine oil 11a in the oil pan 11 has reached a predetermined value or less, for example, about 70% as a lower limit level. Or, for example, based on the detection output obtained by detecting that the time t2, which is the cumulative operating time of the engine, has reached the predetermined time value T2 by the timing circuit, for example, the opening / closing valve V2 is opened, After performing the above-described discharging, for example, a first configuration in which an opening / closing valve V1 is opened to provide a discharging / replenishing means for performing the above-mentioned replenishment,

In the engine drive power unit 100 having the same construction as that of the first construction, the liquid level of the engine oil 11a in the oil pan 11 is below a predetermined value, for example, about 70% which is the lower limit level. Is detected by the liquid level lower limit detector L2 to output the liquid level lowering detection output, that is, the lower limit detection output, and it is detected that the time t2 obtained by accumulating the operating time of the engine 1 reaches the predetermined time value T2. Liquid level time detecting means for outputting a time lapse detection output each time the predetermined time value T2 is reached, that is, an output comparing the cumulative time t2 and the predetermined time T2,

After performing the above-mentioned discharge based on the above-mentioned liquid level drop detection output and time-lapse detection output, the above-mentioned replenishment is carried out and the above-mentioned total is updated, that is, the start of timing of the cumulative time t2 is updated. And a second configuration provided with a discharge replenishment renewal means for

In the engine drive power unit 100 having the same construction as the second construction, the waste oil tank 14 is arranged below the oil pan 11 and the on-off valve V2 provided in the flow path for the discharge is arranged. An opening / closing discharge means for discharging the above by only the opening operation,

The above-mentioned oil sub-tank 12 is arranged above the oil pan 11, and an on-off valve replenishing means for performing the above-mentioned replenishment only by the opening operation of the on-off valve V1 provided in the above-mentioned replenishing flow path is provided. It constitutes the third configuration to be provided.

Therefore, according to the configuration of the first embodiment, the waste oil 11 is caused by the difference in the arrangement positions of the oil sub tank 12, the oil pan 11, and the waste oil tank 14 due to the vertical direction.
Since c is discharged and unused engine oil 11b is replenished, these discharges and replenishments are performed by the on-off valves V1 and V1.
Since it can be performed only by the opening / closing operation of 2, there is an advantage that the intended purpose can be achieved by a very simple configuration in which the waste oil tank 14 and the opening / closing valves V1 and V2 are simply added without using a power machine such as a pump. is there.

[Second Embodiment] A second embodiment will be described below with reference to FIG. 2, parts indicated by the same reference numerals as those in FIG. 1 have the same functions as the parts indicated by the same reference numerals explained in FIG.

The structure of FIG. 2 shows only the main constituent parts corresponding to the structure for replenishing the engine oil in FIG. 1, and the parts not shown have the same structure as in FIG. Further, the second embodiment is configured such that the waste oil 11c is discharged and the unused engine oil 11b is replenished by a pump.

In FIG. 2, the oil sub-tank 12 is arranged below the oil pan 11, and the waste oil tank 1
4 is arranged above the oil pan 11, and further, there are two passages between the oil sub tank 12 and the oil pan 11 and the passage between the waste oil tank 14 and the oil pan 11. A common flow channel 15A having a common flow channel is provided, and the pump 13 is arranged in this common flow channel 15A.

A check valve V3 is arranged in the flow passage 15B between the common flow passage 15A and the oil sub-tank 12, and the flow passage 15 between the common flow passage 15A and the oil pan 11 is provided.
A check valve V4 is arranged at C.

When the engine oil 11a in the oil pan 11 is exhausted and reaches the lower limit liquid level, the detection output from the liquid level lower limit detector L2 is given to the control unit 7, and this detection output, that is, the lower limit detection. Control unit 7 based on output
However, the pump 13 is operated in a predetermined direction, for example, is rotated counterclockwise.

When the pump 13 operates in the reverse direction, only the check valve V3 is opened by the suction pressure of the pump 13, and the unused engine oil 11b in the oil sub tank 12 is replenished in the oil pan 11.

When the liquid surface level of the engine oil 11a reaches the upper limit liquid surface level, the detection output from the liquid surface upper limit detector L1 is given to the control section 7, and based on this detection output, that is, the upper limit detection output. By stopping the operation of the pump 13, the "engine oil replenishment operation by detecting the liquid level" of the engine oil 11a is completed.

Further, in order to perform the "engine oil replenishment operation by detecting the engine operating time", by adding the same configuration as in the case of the above-mentioned first embodiment, it is possible to obtain the intended configuration. Would require no explanation.

[Summary of Configuration of Second Embodiment] To summarize the configuration of the second embodiment described above, in the engine drive power unit 100 similar to the third configuration described above,

The waste oil tank 14 is arranged above the oil pan 11, the oil sub-tank 12 is arranged below the oil pan 11, and the passage for the discharge and the replenishment are provided. A common flow channel, that is, each tank pump placement means that places the pump 13 in the common flow channel 15A,

After the pump 13 is operated in a predetermined direction, for example, in the case of a rotary pump, the pump 13 is rotated clockwise to perform the discharge, the pump 13 is operated in a direction opposite to the predetermined direction, that is, A fourth structure is provided which is provided with a pump discharge replenishing means that rotates counterclockwise to perform the above replenishment.

Therefore, according to the configuration of the second embodiment, the arrangement positions of the oil sub-tank 12, the oil pan 11, and the waste oil tank 14 can be arranged only in a state in which the heads are reversed due to the arrangement of each part of the apparatus. Even if it is not provided, by providing the pump 13 and the check valves V3 and V4, there is an advantage that the intended purpose can be achieved.

[Third Embodiment] A third embodiment will be described below with reference to FIG. In FIG. 3, portions indicated by the same reference numerals as those in FIGS. 1 and 2 are portions having the same functions as the portions indicated by the same reference numerals described in FIGS. 1 and 2.

The structure shown in FIG. 3 shows only the main constituent parts corresponding to the structure for replenishing the engine oil in FIG. 1, and the parts not shown have the same structure as in FIG. In addition, in the third embodiment, the waste oil tank 14 and the oil sub tank 12 are arranged in a common space, and both tanks are positioned on the left and right.

In FIG. 3, the parts different from the second embodiment of FIG. 2 are the oil sub-tank 12 and the waste oil tank 14,
Only the portion integrally formed via the partition wall 16 in the vertical direction.

Therefore, the above-mentioned "engine oil replenishment operation by liquid level detection" and the above "engine oil replenishment operation by engine running time detection" are performed in the same manner as in the case of the second embodiment. I will get it.

[Summary of Configuration of Third Embodiment] To summarize the configuration of the third embodiment described above, in the engine drive power unit 100 similar to the fourth configuration described above,

The oil sub-tank 12 and the waste oil tank 14 are integrally formed via the partition wall 16 in the vertical direction, and the flow path for discharging and the flow path for replenishing are common. A fifth configuration is provided in which each tank pump arranging means for arranging the pump 13 in the flow passage, that is, the common flow passage 15A is provided.

Therefore, according to the structure of the third embodiment, even if the space where the oil sub-tank 12 and the waste oil tank 14 are arranged is only one due to the arrangement of each part of the apparatus, the pump By providing 13 and the check valves V3 and V4, there is an advantage that the intended purpose can be achieved.

[Fourth Embodiment] A fourth embodiment will be described below with reference to FIG. In FIG. 4, the portions denoted by the same reference numerals as those in FIGS. 1 to 3 have the same functions as the portions denoted by the same reference numerals described in FIGS. 1 to 3.

The structure of FIG. 4 shows only the main constituent parts corresponding to the structure for replenishing the engine oil in FIG. 1, and the parts not shown have the same structure as in FIG. Further, in the fourth embodiment, the waste oil tank 14 and the oil sub-tank 12 are arranged in a common space, and both tanks are positioned vertically.

In FIG. 4, an oil sub-tank 12 and a waste oil tank 14 are different from those of the second embodiment shown in FIG.
The waste oil tank 14 is housed so as to be movable up and down along the inner wall of the oil sub-tank 12 only at a portion integrally formed via the horizontal partition wall 17. The bottom wall portion of the waste oil tank 14 is formed as a partition wall 17 by being configured so as to float above the unused engine oil 11a in the oil sub tank 12.

That is, when the amount of unused engine oil 11b is reduced along with the supply, the waste oil tank 14 moves downward,
Further, the waste oil tank 14 is configured to gradually sink into the unused engine oil 11b due to the inflow of the waste oil 11c.

Therefore, the above-mentioned "engine oil replenishment operation by liquid level detection" and the above "engine oil replenishment operation by engine operating time detection" are performed in the same manner as in the case of the second embodiment. I will get it.

[Summary of Configuration of Fourth Embodiment] To summarize the configuration of the fourth embodiment described above, in the engine drive power unit 100 similar to the fourth configuration described above,

The oil sub-tank 12 and the waste oil tank 14 are integrally formed via the horizontal partition wall 17, and the discharge flow path and the replenishment flow path are common. This constitutes a sixth configuration in which each tank pump arranging means for arranging the pump 13 in the flow passage, that is, the common flow passage 15A is provided.

Therefore, according to the structure of the fourth embodiment, the space for disposing the oil sub-tank 12 and the waste oil tank 14 is only one relatively long space vertically because of the arrangement of each part of the apparatus. In such a case, the pump 13
By providing the check valves V3 and V4, there is an advantage that the intended purpose can be achieved.

[Fifth Embodiment] A fifth embodiment will be described below with reference to FIG. In FIG. 5, portions designated by the same reference numerals as those in FIGS. 1 to 4 are portions having the same functions as the portions denoted by the same reference numerals described in FIGS.

The structure of FIG. 5 shows only the main constituent parts corresponding to the structure for replenishing the engine oil in FIG. 1, and the parts not shown have the same structure as in FIG.

Further, this fifth embodiment is similar to the oil pan 11
Used engine oil 11a in the waste oil tank 14
The overflow pipe is used for the configuration of the portion to be discharged to the inside, and the amount of replenishment of the unused engine oil 11b from the oil sub-tank 12 into the oil pan 11 is determined by the operation time of the pump 13 or the opening operation time of the on-off valve V1. By performing only the time T3, the liquid level upper limit detector L1 can be configured without providing the detection function.

In FIG. 5, in the [oil sub-tank upper arrangement type], the oil sub-tank 12 is arranged above the oil pan 11, and an opening / closing valve is provided in the flow passage 15D between the oil sub-tank 12 and the oil pan 11. V1
In addition, in the [oil sub-tank lower arrangement type], the oil sub-tank 12 is connected to the oil pan 1
Oil sub-tank 1
A pump 18 is arranged in a flow path 15D between the oil pan 2 and the oil pan 11.

The flow passage 15E for discharging the used engine oil 11a from the oil pan 11 is an overflow pipe, and the open end 15 of the overflow pipe is provided.
Ea is made to match a predetermined liquid level of the engine oil 11a in the oil pan 11, for example, a liquid level equivalent to about 90% of the volume of the oil pan 11, and the other end side is connected to the waste oil tank 14. .

When the engine oil 11a in the oil pan 11 is consumed and reaches the lower limit liquid level, the detection output from the liquid level lower limit detector L2 is given to the control section 7, and this detection output, that is, the lower limit detection. Control unit 7 based on output
However, for a predetermined time T3 stored in advance in the control unit 7, the opening / closing valve V1 is opened in the [oil sub-tank upper arrangement type], and the pump 18 is operated in the [oil sub-tank lower arrangement type]. Oil pan 1
The unused engine oil 11b is replenished in 1 to complete the "engine oil replenishment operation by liquid level detection".

It should be noted that the open / close valve V1 required to feed the engine oil 11a in the oil pan into the amount equivalent to the amount until the amount of the engine oil 11a in the oil pan reaches about 90% of the volume of the oil pan 11 for the predetermined time T3. Opening time or pump 1
The time value obtained by conducting an experiment in advance for the operating time of 8 is the control unit 7
Stored in the memory.

In addition to the "engine oil replenishment operation by liquid level detection" peculiar to the fifth embodiment described above, the control unit 7 also performs "engine operation time detection" as in the case of the first embodiment. A control configuration for performing the "engine oil replenishment operation by" is provided.

Regarding the control configuration for performing this "engine oil replenishment operation by detecting the engine operating time", the configuration similar to that of the above-mentioned first embodiment can be adopted.
No explanation needed.

[Summary of Configuration of Fifth Embodiment] To summarize the configuration of the fifth embodiment, a driven device, for example, a heat pump device is driven by the power of the engine 1 and each part of the engine 1 is lubricated. Engine oil 11a
Is stored in an oil pan 11 provided near the bottom of the engine 1 and is stored in an oil sub-tank 12 separate from the oil pan 11.
In the engine drive power unit 100 configured to supply oil to the oil pan 11,

Waste oil storage means provided with a waste oil tank 14 for storing the engine oil 11a discharged from the oil pan 11 as waste oil 11c,

The release end 15Ea is connected to the oil pan 1 described above.
A predetermined level of the engine oil 11a in 1, such as a level of about 90% of the volume of the oil pan 11, and the other end of the overflow pipe connected to the waste oil tank 14, that is, the flow Overflow means for providing the passage 15E and performing the above discharge;

As in the case of the first embodiment, the lower limit of the liquid level is detected when the liquid level of the engine oil 11a in the oil pan 11 is below a predetermined value, for example, about 70% which is the lower limit level. For example, based on the detection output obtained by the detection by the detector, or by the detection output obtained by detecting that the time t2 obtained by accumulating the operating time of the engine has reached the predetermined time value T2 by the timing circuit, for example, The opening / closing valve V1 is opened or the pump 18 is operated to provide a replenishing means for replenishing the above-mentioned replenishment means.

Therefore, according to the structure of the fifth embodiment, the structure can be applied to the case where the liquid level upper limit detector L1 cannot be provided due to the structure of the oil sub-tank 12, and the flow path on the waste oil tank 14 side. There is an advantage that the structure is very simple and that the pump 18 can be configured as a simple one for only one-way operation to achieve the intended purpose.

[Modification Implementation] The present invention includes the following modifications and implementations. (1) The oil pan 11 is divided into two parts. That is,
For example, as shown in FIGS. 6 and 7 or 8 and 9 for the configuration of FIGS. 1 and 2, and as shown in FIGS. 11 and 12 for the configuration of FIG. Engine 1
The auxiliary oil pan 11B is provided inside the engine 1, and the auxiliary oil pan 11B is provided outside the engine 1.
Connect with F.

In the case of this construction, the engine oil 11a in the main oil pan 11A is supplied by the pump 19 while the engine 12 is operating, as shown by the chain line in FIG.
Since the oil is delivered to the required lubrication points, the liquid level of the engine oil 11a drops, so that the engine oil 11a in the sub oil pan 11B is replaced by the main oil pan 11A.
When the engine 1 is stopped, the pump 19 is also stopped when the engine 1 is stopped. Therefore, the engine oil 11a sent to each lubrication point returns to the main oil pan 11A, and the liquid level of the engine oil 11a rises. The engine oil 11a is returned to the sub oil pan 11B side.

Therefore, the engine oil 11a in the sub oil pan 11B exchanges with the engine oil 11a in the main oil pan 11A due to the fluctuation of the liquid level of the engine oil 11a due to the start / stop of the engine 1. It works.

(2) In each of the configurations of (1) above, a flow path for returning the engine oil 11a, which has been delivered to the required lubrication point, to the sub oil pan 11B side by the pump 19, for example, in FIG. By providing the flow path 15G as shown by the chain line, a part of the engine oil 11a flows from the sub oil pan 11B side to the main oil pan 11A side during operation of the engine 1, so that the sub oil pan 11A
Engine oil 11a between B and main oil pan 11A
Configure to improve the exchange flow of.

(3) The structure of the fourth embodiment, that is, the horizontal partition wall 17 in the structure of FIG. 4 is replaced with a bellows type variable partition wall 17A as shown in FIG. . The variable partition wall 17A is specifically made of a material that does not deteriorate even when it comes into contact with the engine oil 11a, for example, a silicon rubber material is formed into a bellows shape, and the peripheral edge portion is fixed to the inner wall portion of the tank by adhesion or the like. To form.

(4) Third embodiment, that is, the vertical partition wall 16 in the configuration of FIG. 3 is changed to a variable partition wall similar to the bellows variable partition wall 17A in the above configuration (3). And configure.

[0108]

As described above, according to the present invention, when the engine oil in the oil pan is consumed and drops below a predetermined liquid level, the "engine oil replenishment operation by detecting the lower limit liquid level" is performed. Also, when the cumulative operating time of the engine reaches the predetermined time value, the "engine oil replenishment operation by detecting the engine operating time" is performed, so it is irrelevant to the amount of consumption of the engine oil in the oil pan. In addition, wear impurities etc. in the engine oil in the oil pan are discharged to the waste oil tank side with the discharge of waste oil, and the concentration of wear impurities etc. is diluted by supplementing the unused engine oil, and the additive is also added. Since it is replenished, it is possible to provide an engine drive power unit that can prevent failures due to poor lubrication of various parts of the engine. A.

[Brief description of drawings]

In the drawings, FIGS. 1 to 11 show an embodiment of the present invention, and FIGS. 12 and 13 show a prior art. The contents of each drawing are as follows.

FIG. 1 is an overall block configuration diagram.

FIG. 2 is a block diagram of a main part

FIG. 3 is a block diagram of a main part

FIG. 4 is a block diagram of a main part

FIG. 5 is a block diagram of a main part

FIG. 6 is a block diagram of a main part

FIG. 7 is a block diagram of a main part.

FIG. 8 is a block diagram of a main part

FIG. 9 is a block diagram of a main part

FIG. 10 is a block diagram of the main part.

FIG. 11 is a block diagram of the main part.

FIG. 12 is a block diagram of the main part.

FIG. 13 is an overall block configuration diagram.

FIG. 14 is an overall block configuration diagram.

[Explanation of symbols]

 1 Engine (Internal Combustion Engine) 2 Compression Section 3 Heat Operation Section 4 Pipeline Switching Section 5 Heat Exchanger 6 Setting Operation Section 7 Control Section 10 Heat Source Machine 11 Engine Oil Storage Section (Oil Pan) 11A Main Oil Pan 11B Sub Oil Pan 11a Engine oil 11b Spare oil (unused engine oil) 11c Waste oil (used engine oil) 12 Oil replenishment tank (oil subtank) 13 Pump 14 Waste oil tank 15A Common channel 15B Channel 15C Channel 15D Channel 15E Channel 15Ea Release Tip side 15F flow path 15G flow path 16 partition wall 17 partition wall 17A deformable partition type 18 pump 19 pump 21 oil separator 22 accumulator 80 indoor unit 81 heat exchanger 82 control section 83 setting operation section 100 engine drive power unit L1 liquid Surface upper limit detector L2 Liquid level lower limit detector 1 closing valve V2 off valve V3 check valve V4 check valve

Claims (7)

[Claims] 1. A driven device is driven by the power of an engine, and engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means, and a detection output obtained by detecting that the liquid level of the engine oil in the oil pan is below a predetermined value,
Or a discharge replenishing means for performing the replenishment after the discharge is performed based on a detection output obtained by detecting that the accumulated operating time of the engine reaches a predetermined time value. An engine drive power unit characterized by. 2. The driven device is driven by the power of the engine, and the engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means and a liquid level lowering detection output by detecting that the liquid level of the engine oil in the oil pan has become a predetermined value or less, and a cumulative time of the operating time of the engine is a predetermined time. A liquid level time detecting means for detecting that the value has become a value and outputting a time lapse detection output; An engine driving power unit comprising: a discharge replenishment renewal unit that replenishes the replenishment after performing the replenishment based on the output and the time lapse detection output and renews the cumulative total. 3. The driven device is driven by the power of the engine, and the engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means, an open / close discharge means for arranging the waste oil tank below the oil pan, and performing the discharge only by an opening operation of an open / close valve provided in the discharge passage, the oil sub-tank The auxiliary valve is placed above the oil pan, and only the opening operation of the on-off valve provided in the flow path for replenishing makes the auxiliary valve An engine drive power unit, comprising: an on-off valve replenishing means for supplying power. 4. The driven device is driven by the power of the engine, and the engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means and the waste oil tank are arranged above the oil pan,
Tank pump arrangement means for arranging the oil sub-tank below the oil pan, and arranging pumps in a flow path in which the flow path for discharging and the flow path for replenishing are common; And a pump discharge replenishing device that operates in a direction opposite to the predetermined direction to perform the replenishment after the engine is driven in the predetermined direction to perform the discharge. 5. The driven device is driven by the power of the engine, and the engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means, the oil sub-tank and the waste oil tank are integrally formed through a vertical partition wall, and a pump is provided in a flow path in which the discharge flow path and the replenishment flow path are common. Each tank pump arranging means for arranging the pump, and after operating the pump in a predetermined direction to perform the discharge, An engine drive power unit comprising: a pump discharge replenishing unit that operates in a direction opposite to a fixed direction to perform the replenishment. 6. The driven device is driven by the power of the engine, and the engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means, the oil sub-tank and the waste oil tank are integrally formed via a horizontal partition wall, and a pump is provided in a flow path in which the discharge flow path and the replenishment flow path are common. Each tank pump arranging means for arranging the pump, and after operating the pump in a predetermined direction to perform the discharge, An engine drive power unit comprising: a pump discharge replenishing unit that operates in a direction opposite to a fixed direction to perform the replenishment. 7. The driven device is driven by the power of the engine, and the engine oil that lubricates each part of the engine is stored in an oil pan provided near the bottom of the engine and is separate from the oil pan. An engine drive power unit configured to replenish the unused oil in the sub-tank to the oil pan, the waste oil including a waste oil tank for storing the engine oil discharged from the oil pan as waste oil. A storage means, an overflow means for matching the release side tip with a predetermined liquid level of the engine oil in the oil pan, and providing an overflow pipe having the other end side connected to the waste oil tank to perform the discharge, The level of the engine oil in the oil pan has dropped below a specified level. Detection output obtained by detecting
Alternatively, the engine drive power device is provided with a replenishing means for replenishing the engine on the basis of a detection output obtained by detecting that a time obtained by accumulating the operating time of the engine reaches a predetermined time value. .