JPH0454225A - Cogeneration device - Google Patents

Abstract

PURPOSE:To provide a control step responding a cooling load by providing a plurality of compressors driven by the power of an internal combustion engine so that a number of compressor section in accordance with a cooling load are operated by means of clutch means. CONSTITUTION:In a cogeneration device, a generator is integrally incorporated with an internal combustion engine, and waste heat is retrieved from exhaust gas and cooling water and is effectively used for hot water to be supplied, space-heating or the like. Multiple compressors 9 are disposed being integrally incorporated with the generator 2, having its main shaft 12 coupled to the drive shaft 6 of the generator so that the rotation of the main shaft 12 is transmitted to six gears 15.... Further, six compressor parts 16 are supported corresponding to the gears 15, respectively. Each compressor part 16 is disengageably coupled to the associated gear 15 by means of an electromagnetic clutch part 19, and a number of clutch parts 19 in accordance with a cooling load are operated.

Description

[Detailed Description of the Invention] (Industrial Application Field) In general, a cogeneration device includes, for example, a generator integrated with an internal combustion engine, and the crankshaft of the internal combustion engine is connected to the drive shaft of the generator. According to this cogeneration system, the power of the internal combustion engine drives a generator to generate electricity, and at the same time, the exhaust heat of the internal combustion engine is recovered and used for hot water supply and space heating, etc., effectively utilizing the exhaust heat. It is known as something to do.

In addition, it is well known that the above-mentioned cogeneration system is equipped with a compressor for heating and cooling, and in this case, the rotating shaft of the compressor is connected via a belt to the crankshaft of the internal combustion engine that constitutes the cogeneration system. According to the cogeneration device connected in this way, the power of the internal combustion engine drives the generator and the compressor,
Power generation.

It is configured to provide hot water supply and cooling/heating at the same time.

Further, the frequency of the power source generated by the generator is determined by the number of poles and the rotational speed of the internal combustion engine, and the frequency of the power source is defined as 50 Hz or 60 Hz depending on the region. Therefore, the cogeneration device configured as described in item 1 is configured to control the rotational speed of the internal combustion engine to a constant value in accordance with the power frequency of each region.

By the way, in the cogeneration device configured as described above, since the rotating shaft of the compressor is connected to the rotating shaft of the internal combustion engine via the belt, the compressor is connected to the axis 1 of the internal combustion engine and the generator; Since it is arranged more eccentrically, there is a problem that the equipment becomes larger. Therefore, in order to solve this problem, a compressor is installed integrally with the cogeneration equipment, and the power generation that makes up the cogeneration equipment It has been proposed to connect the rotary shaft of the compressor to the drive shaft of the engine via a flexible shaft joint, thereby connecting the internal combustion engine 1 generator and the compressor coaxially.

(Problem to be Solved by the Invention) However, as mentioned above, in the case of a compressor connected to a cogeneration system, its cooling and heating capacity is determined by the rotational speed of the internal combustion engine. Since it is necessary to control the rotational speed of the internal combustion engine at a constant level, the heating and cooling capacity is fixed, and it is impossible to change the heating and cooling capacity according to the heating and cooling load.

(Means for Solving the Problems) This invention has been made in view of the above-mentioned circumstances, and its purpose is to control the cooling and heating capacity in stages according to the heating and cooling load, thereby achieving the above-mentioned purpose. In order to achieve this, the present invention provides a cogeneration system that includes a generator that is installed integrally with an internal combustion engine and that generates electricity using the power of the internal combustion engine, and that collects and utilizes the exhaust heat of the internal combustion engine in addition to generating electricity. A plurality of compressor sections each driven by engine power, and a clutch section disposed in each of the compressor sections and intermittent the power to drive the number of compressor sections according to the cooling/heating load. It is characterized by being equipped with a multi-compressor.

(Function) According to the present invention, the clutch unit operates so that the plurality of compressor units are driven by the power of the internal combustion engine, the number of which corresponds to the heating and cooling load.

(Example) Hereinafter, an example of a cogeneration device according to the present invention will be described in detail using FIGS. 1 to 3.

In this cogeneration system, as shown in FIG. 1, a generator 2 is disposed integrally with an internal combustion engine 1, and a flywheel 4 is attached to a crankshaft 3 of the internal combustion engine 1. A shaft coupling 5 is fixed to one end surface of the shaft.

On the other hand, the generator 2 includes a drive shaft 6 and a power generation section 7 disposed around the outer periphery of the drive shaft 6, and both ends 6a and 6b of the drive shaft 6 are supported by bearings 8.8. In addition, one end 6a of the generator 2 is connected to the shaft joint 5. According to the generator 2 configured in this way, the power of the internal combustion engine 1 is used to generate the crankshaft 3. A drive shaft 6 is rotationally driven via a flywheel 4 and a shaft coupling 5, and thereby a power generation section 7 is configured to generate power.

Furthermore, the internal combustion engine is configured to recover exhaust gas and cooling water exhaust heat, and utilize the exhaust heat for hot water supply, space heating, and the like.

Furthermore, a multi-compressor 9 is integrally installed in the generator 2, and as shown in FIG. 2, the multi-compressor 9 is equipped with a main shaft 12 supported at both ends by bearings 11 and 11 within a case 10. One end of this main shaft 12 is connected to the drive shaft 6 of the generator 2 via a flexible joint 13, while a gear 14 is attached to the other end of the main shaft 12, and six gears are attached to the outer periphery of the gear 14. Gear 15.15
... are fitted and disposed (see FIG. 3), and these gears 15 are configured to rotate at a predetermined position in conjunction with the gear 14.

Moreover, six compressors 16 are supported on the support part 10a in the case 10, corresponding to each of the gears 15, and according to these compressor parts 16, the interior of the cylinder 17 is formed in an elliptical shape. A rotor that can rotate integrally with the rotor shaft 18 is disposed inside the cylinder 17, and five vanes that can move forward and backward are fitted in a radial manner to the rotor. According to this, the cylinder 17 rotates together with the rotor in close contact with the indoor wall,
The refrigerant gas inside the cylinder 17 is compressed together with lubricating oil.

Further, on one end side of the rotor shaft 18 of each compressor section 16, electromagnetic clutch sections 19, 19 and 19 are provided as clutch sections.
... are arranged respectively, and this electromagnetic clutch section 1
9 connects and connects the rotor shaft 18 and the gear 15;
This is configured to operate or stop the compressor section 16 configured as described above.

Furthermore, each of the electromagnetic clutch sections 19 operates the compressor section 16 six times when the heating and cooling load is at its maximum, while operating only one compressor section when the heating and cooling load is at its minimum. It is configured to operate so that the number of compressor sections corresponds to the load.

Next, the operation of the cogeneration device configured as described above will be explained using FIG. 1 and FIG. 2.

According to this cogeneration system, the power of the internal combustion engine 1 is used to generate the crankshaft 3. The drive shaft 6 of the generator 2 and the main shaft 12 of the multi-compressor 8 are rotationally driven via the flywheel 4 and the shaft coupling 5, whereby the generator 2
Generates electricity in the power generation section 7. On the other hand, in the multi-compressor 8, an electromagnetic clutch section 19 operates the compressor sections 16 according to the number of cooling/heating loads.

That is, according to this compressor section 16, when the main shaft 12 is rotationally driven as described above and each gear 15 rotates via the gear 14 of the main shaft 12, the rotation of the gear 15 is caused to rotate via the electromagnetic clutch section 19. , the rotor shaft 18 of the compressor section 16 is rotated, whereby refrigerant gas is sucked into the cylinder 17 chamber from the suction hole 20 of the case 10,
Next, the refrigerant gas inside the cylinder 17 is compressed by the vane, and the compressed high-pressure gas is discharged to the outside through the oil separator 21 and the discharge hole 22.

Further, the exhaust gas and the exhaust heat of the cooling water of the internal combustion engine 1 are recovered and used for hot water supply and space heating.

Therefore, in the above embodiment, the six compressor sections are configured to be driven by the power of the internal combustion engine by the electromagnetic clutch section, the number of which corresponds to the heating and cooling load, so that stepwise control is performed according to the heating and cooling load. be able to.

(Effects of the Invention) As described above, the cogeneration device according to the present invention is configured such that the plurality of compressor sections are driven by the power of the internal combustion engine by the clutch section, the number of which corresponds to the cooling load. It is possible to provide a cogeneration device that can perform stepwise control.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a cogeneration device according to the present invention, FIG. 2 is an enlarged sectional view of a multi-compressor,
FIG. 3 is a sectional view taken along the line ■--■ shown in FIG. 2. 1... Internal combustion engine 2... Generator 9... Multi-compressor 16... Compressor section 19... Electromagnetic clutch section

Claims (1)

[Scope of Claims] 1. A cogeneration device that includes a generator that is installed integrally with an internal combustion engine and that generates electricity using the power of the internal combustion engine, and that collects and utilizes the exhaust heat of the internal combustion engine in addition to generating electricity. A plurality of compressor sections each driven by the power of an internal combustion engine, and a clutch section disposed in each of the compressor sections and intermittent the power to drive the number of compressor sections according to the cooling/heating load. A cogeneration device characterized by being provided with a multi-compressor.