JPS58148234A - Gas engine driven air conditioning device - Google Patents

Abstract

PURPOSE:To ease gas engine maintenance and inspection by positioning maintenance and inspection parts of said engine so that they may front on an inspection open port of a case containing main parts of a heat pump. CONSTITUTION:An inspection open port 44 is formed in the frontal lower part of a case 40. Maintenance and inspection parts of an engine 10 such as a lid of an air cleaner 16, oil filter 46, lubricating oil supply port 48, draing plug 50 of lubricating oil, ignition plug 52, lubricating oil level inspection window 54 and the like face on the open port 44, to which a cover plate 56 is normally fitted and removed only at the time of maintenance and inspection.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas engine-driven air conditioning system in which a heat pump compressor is driven by an engine that uses gas such as city gas or propane gas as fuel.

It has been considered to drive a heat pump compressor using an engine that uses gas such as city gas or propane gas as fuel, that is, a gas engine.

When the main parts of such a heating and cooling system using a heat pump are housed in one case to form a unit, it is desirable that maintenance and inspection be easy. For example, the main parts of a heat pump, excluding the indoor heat exchanger, are sometimes housed in one case to form a unit, and this unit is installed outdoors. It's easy to be surrounded. Especially when using a gas engine, it is necessary to not only inspect and maintain the engine's air cleaner, oil filter, lubricating oil level, spark plug, etc., but also to lubricate and replace the lubricating oil. It is desirable that it be easy.

This invention was made in view of these circumstances.
Provides a gas engine-driven air conditioning system that makes it easier to maintain and inspect the gas engine even if the unit is installed in a narrow space, when the main parts of the heat pump, excluding the indoor heat exchanger, are housed in a case to form a unit. The purpose is to

In order to achieve this object, the present invention drives a compressor of a heat pump using a gas engine, in which the main parts of the heat pump except for the indoor heat exchanger are housed in one case, and maintenance and inspection parts of the gas engine are provided. is shown facing the inspection opening provided in the case. The present invention will be described in detail below based on the illustrated embodiments.

Figure 1 is an overall configuration diagram of an embodiment of the present invention, Figures 2 and 3 are
The figure shows a partially sectional front view and left side view. This embodiment uses heat generated by a gas engine to heat water and store hot water. In FIG. 1, numeral 10 is a water-cooled gas engine, 12 is a compressor,
The output of engine 10 drives compressor 12 via clutch 14 (FIG. 1). Air is sucked into the engine 1o via the air cleaner 16 and the regulator 18, while gas as a fuel, such as city gas, is supplied to the regulator 18, where a mixture of gas and air is generated and fed to the engine 10. Inhaled.

Note that this regulator 18 automatically controls the air flow rate and gas flow rate so as to keep the rotational speed of the engine 10 constant.

2.0 is a four-way switching valve, 22 is an indoor heat exchanger, and 24 is an outdoor heat exchanger. These and the compressor 12 form a closed loop, and this closed loop is filled with an appropriately selected working fluid. is included. A known heat pump is formed by each member forming the closed loop 1 and the engine 1o.

This heat pump operates as follows. During cooling, the switching valve 2o is positioned as shown by the solid line in FIG.

Therefore, the working fluid that has become high temperature after being compressed by the compressor 12 is cooled by the outdoor heat exchanger 24 and then transferred to the indoor heat exchanger 22.
When it expands, it takes away the heat from the indoor air. Then, the cycle of being compressed again by the compressor 12 is repeated. In addition, during heating, the switching valve 20 is positioned as shown by the imaginary line in FIG. Vessel 2
4, and the adiabatic expansion at that time takes in heat from the outside air. Then, this working fluid passes through the switching valve 20 and returns to the compressor 12, thereby repeating the cycle.

In FIG. 1, 26 is a hot water storage tank, and a heat exchanger 28 is disposed within this tank 26, and the cooling water of the engine 1o is circulated through this heat exchanger 28. That is, the water in this tank 26 is heated by the exhaust heat of the engine 10. Note that 30 is a pulp for injecting water into this tank 26. 32 is a pulp that controls the amount of hot water flowing out from this tank 26. Reference numeral 34 denotes an auxiliary burner, which is ignited to heat the tank 26 when the amount of hot water used is large and the water temperature in the tank 26 drops.

This auxiliary burner 34 uses gas as fuel like the engine 10. In FIGS. 2 and 3, 40 is a rectangular cylindrical case, and the engine 10 and compressor 1
4, a hot water storage tank 26 is disposed in the center, and an outdoor heat exchanger 24 is disposed in the upper part. A fan 42 is disposed inside the outdoor heat exchanger 24 and the heat exchanger 2
4. Forcibly introduce outside air. An inspection opening 44 is formed in the lower part of the front surface of the case 40, and a maintenance inspection portion of the engine 10 faces this opening 44. That is, the lid of the air cleaner 16, the oil filter 46, and the lubricating oil filler port 4.
8. A lubricating oil drain plug 50, a spark plug 52, a lubricating oil level inspection window 54, etc. face the opening 44. A cover plate 56 is normally attached to the opening 44 (FIG. 3), and the cover plate 54 is removed only during maintenance and inspection. A small hole 56 is formed in the cover plate 54 to introduce outside air to the air cleaner 16. In FIG. 31, 58 is an exhaust heat exchanger, and 60 is an exhaust silencer. Exhaust gas discharged from the exhaust muffler 60 is discharged to the outside through a small hole 62 provided in the front of the case 40. Note that cooling water circulating between the engine 10 and the heat exchanger 28 is guided to the exhaust heat exchanger 58, and the exhaust heat is recovered here and used to heat water in the tank 26. Second
In the figure, 64° and 66 indicate the inlet and outlet of the cooling water to the engine 10, and 66a and 64m indicate the inlet and outlet of the cooling water to the heat exchanger 28 in the tank 26.

In this embodiment, the small holes 56° and 62 corresponding to the air intake port of the air cleaner 16 and the exhaust port of the exhaust silencer 60 are placed in cares 4.
68a and 68b in Figures 2 and 3 are , is a cap that covers a small hole provided on the left and right sides of the case 44, and is attached at approximately the same height as the small hole 56. 70 again
Similarly, caps 68a and 70b are caps that are placed over the small holes provided on the left and right sides of the case 44 so as to have approximately the same height as the small hole 62.
If you remove the b e 70 a y 70 b appropriately and change the positions of the air intake port and the exhaust port so that the air intake port of the air cleaner 16 and the exhaust port of the muffler 60 face the small hole that appears after removing the cap, The positions of the intake and exhaust ports can be changed appropriately depending on the installation location of this unit.

In this embodiment, the case 40 has a rectangular cylindrical shape, so that it can be easily accommodated in a narrow space, but the case of the present invention may also have a cylindrical shape.

As described above, in this invention, the maintenance and inspection part of the gas engine is exposed to the inspection opening provided in the case, so that engine maintenance and inspection can be performed from one place, and when this device is installed in a narrow space. It also makes it easier to carry out maintenance inspections.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIGS. 2 and 3 are a partially sectional front view and left side view. 10 River gas engine, 12-...Compressor, 22...Indoor heat exchanger, 40...Case, 44...Inspection opening, 56.62...Small hole, 68t70...Small hole Cap O crowned by Patent applicant: Small gas/＞mt, l technology research association Patent attorney Yama 1) Yu Moon

Claims (4)

[Claims] (1), I! / A gas engine that drives a compressor of a heat pump, in which the main parts of the heat pump other than the indoor heat exchanger are housed in one case, and the maintenance and inspection parts of the gas engine are arranged in an inspection case provided in the case. A gas engine-driven air-conditioning and heating system that features an open opening. (2) The gas engine-driven air-conditioning device according to claim 1, wherein the case is formed into a rectangular cylindrical shape. (3) The gas engine storage/heating device according to claim 2, wherein at least one of the intake port and the exhaust port of the gas engine is provided on the same surface as the inspection opening of the case. (4) Forming small holes on each of multiple sides of the case,
A gas engine-driven air-conditioning system according to claim 2 or 3, wherein an intake port and an exhaust port of a gas engine are inserted into one of the small holes.