JPS5812930A - Apparatus for heating and snow melting in combination utilizing gas engine - Google Patents

Abstract

PURPOSE:To enable to use gas engine for multiple purposes, by raising the temperature of cold water by the exhaust gas from a gas engine, and re-circulating it, mixing with hot water, after it is used for heating rooms and melting snow accumulated on a roof. CONSTITUTION:The titled apparatus is composed in the manner that the cold water from a water feed pipe 9 is passed through the exhaust gas from an engine 1, and after it is fed into a floor heating panel 12 by circulating pump 11, passing through an automatic mixing valve 20, it passes through a hot water coil 18 on a roof 17, passing through a connection valve 14 of three-way type, being mixed with hot water by the valve 20, passing through a return pipe 19, and circulating through the above mentioned passage again. With such an arrangement, an energy of exhaust gas from the engine 1 can be utilized, efficiently, and for multiple purposes.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a heating device that uses a gas engine, and a multi-purpose and efficient air conditioner that can melt the snow on the rooftop when it snows, and can be used by switching the heating device to a cooling device during the violet season. This is related to equipment.

Next, one embodiment of the present invention will be described with reference to FIG. In the figure, 1 is an engine that drives a compressor 2. Reference numeral 6 is a refrigerant circuit for heating and cooling, and during heating operation, the refrigerant flows from the compressor through the four-way valve 4 to the condenser 5. Forced circulation is performed through the expansion valve 6 to the evaporator 7 and back to the compressor 2 via the four-way valve 4. The compressed high-temperature refrigerant dissipates heat in the condenser, and the fan 22 heats the room. 8 is a gas supply circuit that supplies city gas or propane gas to the gas engine. The cold water Ir1i supplied through the water supply pipe 9 is heated by the exhaust heat of the gas engine while passing through the engine 1, becomes hot water, and reaches the hot water channel 1o via the automatic mixing pulp 20.

A circulation pump 11 is provided in this hot water channel 10 and supplies hot water to a radiator 15 provided within a floor heating panel 12. This radiator can be installed in multiple layers inside the building.

Reference numeral 21 denotes a snowfall amount detector placed on the roof, and is connected to a three-way valve 14 that controls the hot water coming out of the radiator 13. That is, when a certain amount of snow has been accumulated, a signal is sent to the three-way valve, which closes the flow of hot water in the hot water circulation path 16 provided in the room, and opens the hot water channel 15 to send hot water to the hot water coil (on the roof). pipe).

The pulp flows into the automatic mixing pulp 20 through a return pipe 19 connected to its end, is mixed with hot water heated by the exhaust gas, and is circulated through the hot water loop circuit again. Note that the snow amount detector is not necessarily required, and the three-way valve may be opened and closed manually. The hot water coil (pipe) on this wholesale board has a snow-melting effect, converting snow into water and discharging it into the external sewer system through a gutter. Therefore, it is important to install the hot water coil 1'8 also in this area so that a curtain of ice does not form on the eaves.

Next, the operating function of the refrigerant circulation circuit driven by the gas engine and forcedly circulated by the compressor 2 will be explained.

During heating, when the gas engine 1 is operated to drive the compressor 2, the refrigerant compressed by the compressor 2 is forcibly circulated within the heating refrigerant circuit 3 via the four-way valve 4, and is Heat is dissipated in the inner condenser 5. At this time, the heat dissipation fan rotates and blows warm air into the room, heating the room.

On the other hand, as mentioned above, the cold water supplied from the water supply pipe 9
11 While passing through the gas engine 1, the water becomes hot due to the exhaust heat of the gas engine, reaches a constant temperature through the automatic mixing pulp 20, is passed through the circulation pump 11, and reaches the radiator 13 of the floor heating panel 12, where the heat is radiated and heated. The temperature of the panel gradually increases. Comparing the effects of the warm air sent by the fan from the condenser 5 and the heating by the floor heating panel 12, we find that the rise in temperature of the floor heating panel 12 is not sudden; When using only the heating panel, it usually takes about 2 hours for the indoor temperature to reach the appropriate heating temperature.
There is a time delay of ~3 hours. Therefore, floor heating panel 12
Until the temperature reaches a predetermined temperature, the room is rapidly heated by heat radiation from the radiation fan 22, which eliminates the discomfort caused by the initial start-up delay when only conventional floor heating is used. can. Moreover, since the hot water flowing to the floor heating panel 12 is generated by recovering the exhaust heat of the gas engine 1, no other heat source is required, which is extremely energy-saving. On the other hand, when the floor heating panel 12 rises to a predetermined temperature, the room receives both floor heating and heating from the radiation fan, and a legally heated space with no temperature difference between the upper and lower parts, ie, the feet and face can be obtained. Of course, if the heating effect in the room can be obtained only by heating from the floor heating panel, it is also possible to weaken the rotation of the radiation fan and stop it.

Furthermore, according to the present invention, heating from the floor heating panel is sufficient to reduce the operating coefficient cop of the field compressor itself when the outside temperature drops to below 1, for example, 5°C, that is, the heating effect from the radiation fan. can be compensated. On the other hand, if it is snowing at this time, the snow detector 2 installed on the roof 17 as described above
1 senses this and turns the three-way valve 14 on to the water heater 15. The hot water that has passed through the floor heating panel 12 that opens to the side passes through the three-way valve 14, passes through the hot water channel 15, is guided to the hot water coil (vibro 8) installed on the roof 17, passes through the return pipe 19, and is sent to the water supply pipe by the automatic mixing pulp 20. 19 and the hot water that has passed through the gas engine 1 and is sent to the circulation pump 11 at a constant temperature, the heating temperature from the floor heating panel 12 can always be maintained at a constant temperature. In this case, the snow accumulated on the roof can be effectively melted from the early stages of snowfall using the heat generated by the hot water coil.

In the above explanation, we talked about heating and snow melting on the roof, but by utilizing the characteristics of the gas engine compressor pump, the four-way valve can be reversed in the summer to switch from the heating circuit to the cooling circuit, creating a comfortable cooling system. It can also be used as

As explained above, the present invention allows the exhaust gas of a gas engine to pass through a water supply pipe, converts the water in the water supply pipe into hot water, and uses this as a heat source for a floor heating panel. When it snows, the snow on the roof can be used to melt the snow, and the refrigerant can be compressed using the power of the gas engine to provide an air conditioning system.

As described above, the present invention allows a gas engine to be used efficiently for multiple purposes, and also allows the heat source of the gas engine to be used to the maximum extent, thereby fully exhibiting an energy saving effect.

[Brief explanation of the drawing]

FIG. 1 is a yarn path diagram showing one embodiment of the present invention. 1: Gas engine, 2: Compressor. 6: Refrigerant circulation circuit, 4: Four-way valve. 5: condenser, 6: expansion valve, 7: evaporator. 8: Gas supply circuit, 9: Water supply pipe. 10: Hot water channel, 11: Circulation pump. 12: Floor heating panel, 13: Heat radiator (hot water pipe). 14: Three-way valve, 15: Warm waterway, 16:' Warm waterway. 17: Roof, 18: Hot water coil (hot water coil) 19: Return pipe,
2o: Automatic mixing knob 5 loops. 21: Snowfall amount detector, 22: Heat radiation fan.

Claims (1)

[Claims] 1) Cold water is made to pass through the exhaust gas of a gas engine to make hot water, and this hot water is mixed with an automatic mixing valve. A hot water channel that supplies hot water to a radiator placed in the floor heating panel by a circulation pump, and a hot water coil installed on the roof for melting snow, through which hot water exits the hot water pipes of the radiator of the floor heating panel. a water supply pipe for supplying hot water through a three-way valve, a means for opening and closing the three-way valve, and a means for returning the cooled water after being used for melting the snow to the automatic mixing valve, passing through the exhaust gas of the gas engine and rising. A return pipe that mixes hot water with hot water and circulates it again, a condenser that has a fan that is forced to circulate by a compressor driven by the gas engine, and an expansion valve. A heating/snow melting device that uses a gas engine with a refrigerant circuit called an evaporator. 2) A heating/snow melting device using a gas engine according to claim 1, wherein a snow amount detector is provided on the roof and the detection output opens a three-way valve.