JPS58148214A - Oil tank device of stationary engine - Google Patents

Abstract

PURPOSE:To increase contained capacity of lubricating oil and extend a replacement period of the lubricaing oil, by providing an oil tank independently of an oil sump in a crank chamber and partially circulating the lubricating oil delivered from an oil pump always to said oil tank. CONSTITUTION:An oil tank 16 is provided independently of an oil sump 14 formed 14 formed to the bottom part of a crank chamber 12, and both bottom parts of the tank 16 and the sump 14 are connected by a communication passage 20. Lubricating oil in the sump 14 is sucked by a pump 22 through an oil strainer 24 and forcibly fed to each part of an engine by an oil passage 26. While a branch oil passage 28 is provided and connected with one end to the passage 26 and the other end to the tank 16. The lubricating oil forcibly fed to the passage 26 is partially fed to the tank 16 by flowing through the passage 28, and the rest part is fed to each lubricated part in the engine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil tank device for a stationary engine that can increase the capacity of lubricating oil and significantly lengthen the lubricating oil exchange cycle.

It has been proposed that an internal combustion engine drive the compressor of a heat pump type air-conditioning system, while using the heat generated by this ennon to heat water in a hot water storage tank. If an air-conditioning device and a hot water supply device are packaged into a compact package using FTSNO in this way, for example, these heat sources in the home can be concentrated into one, which is desirable from the standpoint of energy saving.

Stationary engines used in such devices not only need to be able to operate for long periods of time without maintenance, but also need to be downsized when installed in homes.

For example, in order to lengthen the lubricating oil replacement cycle, it is first considered to increase the oil reservoir capacity in the crank chamber.

However, in this case, the problem arises that the entire engine becomes larger as the crank chamber becomes larger. Therefore, it may be possible to connect a separate oil tank to the crank chamber without enlarging the crank chamber itself, and to store this oil tank by effectively utilizing the space formed between other equipment. However, in this case, since the lubricating oil in the oil tank does not circulate well, only the lubricating oil in the crank chamber deteriorates early, resulting in a disadvantage that the lubricating oil replacement period becomes shorter.

This invention was made in view of these circumstances,
The purpose of the present invention is to provide an oil tank device for a stationary engine that can significantly lengthen the lubricating oil exchange cycle, eliminate the need for frequent maintenance, and prevent the enlargement of the engine due to an increase in the capacity of the crank chamber. do.

The present invention achieves these objectives! The oil reservoir formed in the lower part of the crank chamber, the oil tank formed separately from the 2-0 oil reservoir, and the oil reservoir and oil tank are passed through to make the oil level of the lubricating oil stored in these the same. an oil pump that pumps the lubricating oil in the oil reservoir to each part of the engine via the oil passage; and a branch oil passage that branches from the oil passage and communicates with the oil tank; A part of the discharged oil is configured to circulate through the oil tank. The present invention will be described in detail below based on the illustrated embodiments.

FIG. 1 is a sectional view showing one embodiment of the present invention. In this figure, reference numeral 10 is a stationary carrot, 12 is a crank chamber thereof, and 14 is an oil reservoir formed at the bottom of this crank chamber 12. . Reference numeral 16 denotes an oil tank made separately from the oil reservoir 14. The oil tank 16 has a small hole 18 communicating with the atmosphere at the top, while a communication passage is formed at the bottom of the oil reservoir 14. 20. As a result, oil reservoir 14 and oil tank 1
The oil level of the lubricating oil contained in the lubricating oils 6 becomes the same.

Reference numeral 22 denotes an oil pump. This pump 22tlj sucks up the lubricating oil in the oil reservoir 14 through the oil strainer 24, and pressure-feeds this lubricating oil to each part of the engine through the oil passage 26. 28 is a branch oil passage 7c, one end of which is connected to the oil passage 26 and the other end connected to the oil tank 16.

Reference numeral 30 denotes a throttle provided within this branched oil passage 28.

According to this embodiment, a part of the lubricating oil forced into the oil passage 26 by the oil pump f22 passes through the branch oil passage 281 and is sent to the oil tank 16, and the remainder is sent to the lubricating oil of each part of the engine. . That is, the lubricating oil is always sent to the oil tank 16 in an amount determined by the restrictor 30. The oil tank 16 communicates with the oil reservoir 14 through a communication passage 20, and since the lubricating oil level between the oil tank 16 and the oil reservoir 14 is kept approximately constant, the lubricant that flows into the oil tank 16 from the branch oil passage 28 A corresponding amount of oil flows from the oil tank 16 to the oil sump 14 .

That is, the lubricating oil in the oil tank 16 is constantly circulating. As a result, all the lubricating oil is circulated and the lubricating oil deteriorates evenly throughout, so there is no problem where only the lubricating oil in the oil reservoir 14 deteriorates early. , the lubricating oil change cycle becomes longer. Furthermore, since the oil tank 16 can be formed to effectively utilize a gap between other devices such as a heat pump type air-conditioning device or a hot water storage tank, the engine itself and the entire device incorporating this engine can be downsized.

FIG. 2 is a sectional view of another embodiment. This example
Cylinder head 2 housing exhaust valve 32 and valve train
An oil passage 26 is formed by the inside of the oil passage 6A, the outward passage 26B1, and the return passage 26C, and one end of the branched oil passage 28A is connected to the return passage 28C. According to this embodiment, a portion of the lubricating oil falling along the return path 26C is forcibly returned to the oil tank 16 using gravity. Therefore, in the embodiment shown in FIG. 1, a portion of the lubricating oil discharged by the oil pump 22 flows back to the oil tank 16.
Although it is necessary to increase the discharge amount of the oil pump 22, according to the embodiment shown in FIG. 2, this is not necessary. In FIG. 2, the same parts as in FIG. 1 are given the same reference numerals, so the description thereof will not be repeated.

FIG. 3 is a sectional view showing still another embodiment.

In this embodiment, the oil tank 16 is rigidly connected to the engine 10 by brackets 34, 36, and the entire combined body is elastically supported by mount rubbers 38, 40. According to this embodiment, no load is applied to the communication path 20 due to the vibration of the ennon 10, and the communication path 20
This prevents damage and oil leakage from the connecting parts. In FIG. 3, the same parts as in FIG. 1 are given the same reference numerals, so their description will not be repeated.

As described above, this invention provides an oil tank separate from the oil reservoir in the crank chamber, so it is possible to increase the lubricating oil capacity without increasing the size of the crank chamber, that is, without increasing the size of the engine itself. In particular, the oil tank can be placed by effectively utilizing the space between it and other equipment, so the entire device using this ennon can be downsized. In addition, since a portion of the lubricating oil discharged by the oil pump is constantly circulated to the oil tank, all lubricating oil does not deteriorate uniformly, and as the lubricating oil capacity increases, the lubricating oil must be replaced. The cycle can be made very long, and it can be used for long periods of time without maintenance.

[Brief explanation of the drawing]

1.2.3 are cross-sectional views showing embodiments of the present invention. 10°°°engine, 12...crank chamber, 14...
- Oil reservoir, 16... Oil tank, 2o... Communication passage, 22... Oil pump, 26, 26A... Oil passage, 28... Branch oil passage. Patent Applicant Small Gas Cooling Technology Research Association Agent Patent Attorney Yama 1) Yu Fumi Figure 2, 12 14 24

Claims (1)

[Claims] An oil reservoir formed in the lower part of the crank chamber, an oil tank formed separately from this oil reservoir, and a communication system that communicates with the oil reservoir and the oil tank to maintain the same oil level of the lubricating oil contained therein. a passage, an oil pump that pumps the lubricating oil in the oil reservoir to various parts of the engine via the oil passage, and a branch oil passage that branches from the oil passage and communicates with the oil tank, and the oil pump discharges oil. An oil tank device for a stationary engine, characterized in that a portion of oil (1) is circulated through the oil tank.