JPH0220907B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pump device in which an internal combustion engine is immersed in a can containing a heating medium, and the internal combustion engine drives a compressor. The purpose is to provide vibration isolation and prevent leakage of heat medium inside the can.

In general, this device is becoming widely used for hot water supply and space heating, but because it uses an internal combustion engine and is immersed, vibrations, noise, and leakage of heat medium such as water pose major problems.

Therefore, the present invention interposes a vibration isolating structure such as vibration isolating rubber between the support part of the internal combustion engine and the can body,
This is designed to prevent heat medium leakage as well as vibration and sound insulation for internal combustion engines.

According to the present invention, a reliable vibration-proof, sound-proof and liquid-tight structure can be obtained easily and inexpensively.

This embodiment will be described below with reference to the drawings. First, a typical air conditioning water heater to which the heat pump device of the present invention can be applied will be explained with reference to FIG.

This air conditioning hot water supply system uses the exhaust heat of an internal combustion engine and the heat of a heat pump device to supply hot water and space.It mainly consists of a can body A2 containing a heat medium A1 such as water, and a heat medium A1 inside the can body A2. Internal combustion engine 3 immersed in
, an upper lid 11 with an air supply pipe 8 and an exhaust pipe 9 connected to the internal combustion engine 3, a water supply pipe 15 immersed in the heating medium A1 and connected to one port, and a hot water supply pipe 16 to the other port. Hot water heat exchanger 5 connected to
, a heating heat exchanger 6 to which an outgoing pipe 17 and a return pipe 18 to an external heater (not shown) are connected, and a refrigeration circuit 14 formed by a compressor 10. The can body A2 has a heating medium A1 such as water inside it.
It is a tank that has heat insulation, sound insulation, and sound absorption properties, and has an internal combustion engine 3, an exhaust gas heat exchanger 7, a hot water supply heat exchanger 5, and a heating heat exchanger 6.
is stored.

By the way, the internal combustion engine 3 causes the heat medium A1 to radiate heat and also drives the compressor 10. For this purpose, a portion of the internal combustion engine 3 may be immersed.

The compressor 10 constitutes a refrigeration circuit 14 together with a condenser 21, an expansion valve 20, and an evaporator 19.

The hot water supply heat exchanger 5 is for heating tap water with the heating medium A1 to supply hot water.

The heating heat exchanger 6 is a circuit in which an outgoing pipe 17, a return pipe 18, an external heater, and a circulation pump (both not shown) are connected, and is used to heat the circulating water. Others: heating heat exchanger B22, outbound pipe B2
3. There is a return pipe B24, a can body B25, and a heat medium B26.

The operation of this device is generally as follows.

By starting the internal combustion engine 3, the compressor 10 is driven, and the condenser 21, expansion valve 20, and evaporator 19 are activated.
A refrigeration circuit 14 consisting of the following operates in cycles. Air conditioning can be achieved by transferring heat from the evaporator 19,
The condenser 21 radiates heat and heats the heat medium B26. On the other hand, in the can A2, the heat medium A1 is heated by the heat of the internal combustion engine 3 itself, and the heat medium A1 is also heated by the exhaust gas of the internal combustion engine 3 through the exhaust gas heat exchanger 7. The tap water passing through the hot water supply heat exchanger 5 is heated by the heated heat medium A1 and can be supplied from the hot water supply pipe 16. Further, the circulating water passing through the heating heat exchanger 6 can be heated and heated by an external heater. Note that also in the can body B25, the circulating water passing through the heating heat exchanger B22 is heated by the heated heat medium B26 and can be heated by another external heater.

In addition to being used as an air conditioner, the evaporator 19 of the refrigeration circuit 14 can also be placed outdoors and used as an outdoor heat exchanger. Furthermore, the heating heat exchanger B22 can be used for hot water supply by connecting it to a hot water supply circuit.

The embodiment will now be described with reference to FIG. 2, which shows the internal combustion engine 3 and the can body A2 in detail. The upper lid 11 is a part of a flywheel housing 3a that surrounds a flywheel 33 of the internal combustion engine 3, and its flange 11a is fastened to a flange 2a of the can body A2 via a vibration isolation structure 27, as will be described later. Ru. The vibration isolation structure 27 is made of rubber and has a curved portion 27a, and a lower ring plate 271 for fixing its lower end to the flange 2a of the can body A2, and its upper end to the flange 11a protruding from the internal combustion engine 3. An upper ring plate 272 is attached for this purpose. The vibration isolation structure 27 and the flange 2a of the can body A2 and the vibration isolation structure 27 and the flange 11a of the top lid 11 are fixed with bolts and nuts 28 and 29, respectively.

In addition, the flange 2a of the can body A2 and the vibration isolating structure 2
The lower end portion of the upper lid 11 and the upper end portion of the vibration isolating structure 27 are also brought into close contact with each other.

The embodiment having the above configuration is an internal combustion engine 3.
When the engine is started, the piston 31 of the internal combustion engine 3 reciprocates, the shaft 32 and the flywheel 33
Due to the rotational movement, the can body A2 tends to vibrate in the horizontal, circumferential, and vertical directions. However, since the vibration isolation structure 27 is interposed between the can body A2 and the internal combustion engine 3, the vibrations of the internal combustion engine 3 are absorbed by the vibration isolation structure 27 and are not transmitted to the can body A2. As a result, the can body A2 does not vibrate and generate no noise.

Furthermore, even if the can body A2 slightly vibrates, the space between the can body A2 and the upper lid 11 is sealed by the vibration isolating structure 27, so there is no risk of the heat medium A1 leaking out from the can body A2.

Furthermore, after the internal combustion engine is started, the heating medium A1 is heated and the air pressure above the heating medium A1 increases, and this pressure acts on the flexible vibration-proofing structure. As a result,
The vibration isolation structure 27 also performs the same function as an air cushion.

In addition, in the embodiment, the upper lid 1 protrudes from the internal combustion engine 3.
Since the flange 11a of 1 is integrated with the flywheel housing 3a of the internal combustion engine 3, the internal combustion engine 3 is very easy to assemble.

Although the specific embodiments have been described above, the shape of the vibration isolating structure 27 can be variously modified, and of course may include a hollow portion. Furthermore, the upper lid 11 may be formed separately from the engine 3, for example, by a heat insulating structure.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an air conditioning water heater to which the present invention can be applied, and FIG. 2 is a sectional view showing in detail an internal combustion engine and a can body of an embodiment of the present invention. 1... Heat medium A, 2... Can body A, 2a... Can body A
Flange, 3...Internal combustion engine, 3a...Flywheel housing, 11...Top lid, 11a...
Flange protruding from the internal combustion engine, 14... Refrigeration circuit, 27... Vibration isolation structure.

Claims (1)

[Claims] 1. In a heat pump device in which a compressor for cycling a refrigeration circuit is driven by an internal combustion engine at least partially immersed in a heating medium in a can, a heat pump is provided on a flange of the can. A heat pump device using an internal combustion engine, characterized in that a vibration isolating structure is provided along the internal combustion engine, and a flange protruding from the internal combustion engine is fastened to the vibration isolating structure. 2. A heat pump device using an internal combustion engine according to claim 1, wherein a flange protruding from the internal combustion engine is integrated with a flywheel housing of the internal combustion engine.