JPH0424373Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine-driven heat pump in which component parts such as an engine and a compressor are collectively assembled into a package.

[Conventional technology]

Conventionally, in this type of engine-driven heat pump, not only the engine and compressor but also other equipment such as the condenser were housed in an external case to create a package (for example, Utility Model Application No. 59-73695 Public bulletin).

[Problem that the invention attempts to solve]

However, in this case, all the equipment is housed in a case, so the shape of the case cannot be made into a complicated shape that follows the external shape of the installed equipment. Therefore, we had no choice but to make it box-shaped to fit the maximum external size, making it larger than necessary.

Furthermore, since the interior space of the case in which the engine is placed is closed off by a soundproof wall, there is a risk that ventilation within the engine room may be insufficient and the temperature inside the case may rise. The purpose of the present invention is to reduce the size of the entire device through a rational arrangement and to prevent overheating within the case without reducing the soundproofing function.

[Means for solving problems]

The characteristic configuration of this invention is that both the compressor and engine are housed in a case, the condenser and evaporator are placed on the top of the case, and a pedestal is connected to the bottom of the case, and the space inside the pedestal is is formed by an upper surface of a case that houses at least one of an intake duct and an exhaust duct for the engine housed in the case, and on which the condenser and evaporator are placed, and a ceiling surface of the case inner space. An intake/exhaust space is provided, and the intake/exhaust space consists of an intake chamber that sends outside air into the case and an exhaust chamber that exhausts the air inside the case to the outside, and the intake and exhaust chambers are oriented laterally to each other. The advantages are as follows:

[Effect]

In other words, by limiting the items stored inside the case to the engine and compressor, which require soundproofing, the case itself can be made smaller, while the evaporator and condenser, which do not require soundproofing, can be stored inside the case. By installing the heat exchangers on the top surface of the case, the volume occupied by the case is prevented from increasing as compared to a case where these are also covered by the case. Moreover, since at least one of the intake and exhaust ducts is housed in the hollow space of the pedestal provided at the bottom of the case, the empty space can be used effectively.
Since the duct can be firmly supported using the walls of the pedestal, vibrations of the duct can also be suppressed. Since the air in the engine room is taken in and exhausted, overheating of the inner space can be prevented, and the intake and exhaust space is formed by the upper surface of the case and the ceiling surface of the inner space of the case. Since the intake chamber and the exhaust chamber are horizontally partitioned and adjacent to each other, the vertical width can be made small, and a large space is not taken up, and the soundproofing effect is not deteriorated.

[Effect of idea]

As a result, by adopting a rational layout configuration,
While not reducing the soundproofing function of the case and preventing overheating inside the case, it is possible to downsize the case, making it easier to install by reducing the volume occupied by the case. We were able to reduce the constraints on the surface. Moreover, this intake and exhaust space is located between the condenser and evaporator and the engine room, and since air is constantly flowing in the space, there is a temperature difference between the condenser and evaporator and the engine room. There is also the advantage that the influence of both temperatures caused by the temperature can be suppressed.

〔Example〕

As shown in FIG. 1, a heat exchange fluid is supplied to the evaporator 1 side for a refrigerant circulation circuit consisting of an evaporator 1, an engine E-driven compressor 2, a condenser 3, and an expansion valve (not shown). At the same time, a cooling water pipe 5 to the condenser 3 is extended to a first heat exchanger 6 that uses engine cooling water as a heat source and a second heat exchanger 7 that uses engine exhaust gas as a heat source. The engine heat pump is configured to circulate and supply heated cooling water to a heat load such as a greenhouse.

The engine E and compressor 2 are housed in a box-shaped case 8.
The evaporator 1 and condenser 3 are housed in case 8.
is installed on the top of the.

The first and second heat exchangers 6 and 7 are housed in the case 8, and an air intake port 9 and an intake fan 10 for taking air into the case 8 are provided above the case 8. An intake/exhaust mechanism is provided in which a space A, an air exhaust space B provided with an air exhaust port 11, and an air exhaust fan 12 are separated and adjacent to each other.

Above it, there is provided an intake/exhaust space formed by the upper surface 17 of the case 8 on which the condenser 3 and the evaporator 1 are placed, and the ceiling surface 18 of the inner space of the case 8. , consists of an intake chamber A that sends outside air into the case 8 and an exhaust chamber B that exhausts the air inside the case 8 to the outside, and the intake chamber A and the exhaust chamber B are partitioned and adjacent to each other in the horizontal direction. It is provided. In other words, the case top surface 17 and the ceiling surface 18
The space formed by the above is divided by a partition wall 19 to form an intake chamber A and an exhaust chamber B, and an air intake port 9 formed on the side surface of the case is connected to the ceiling surface through an intake passage that is U-shaped in plan view. The intake chamber A is constructed so that outside air is sucked into the case by the fan 10 through the intake port formed in the ceiling surface 1.
The exhaust chamber B is configured to exhaust air from an exhaust port formed at 8 with a fan 12, and exhaust the air to the outside of the case from an air exhaust port 11 formed on a side surface of the case via an intake passage that is U-shaped in plan view. be.

A pedestal 1 for installation is installed on the bottom surface of the case 8 as described above.
3, and an engine exhaust duct 15 including an exhaust muffler 14 and an intake duct 16 are installed in the hollow space of this pedestal 13. Therefore, by fixing the intake/exhaust ducts 16 and 15 to the pedestal 13, a strong mounting structure can be obtained that suppresses their vibrations, and the vibration noise can be blocked in the hollow space of the pedestal 13, resulting in a sound silencing effect. You can also expect

[Another example]

At least one of the intake and exhaust ducts 16 and 15 may be located within the hollow space of the base 13.

[Brief explanation of drawings]

The drawings show an embodiment of the engine-driven heat pump according to the present invention, in which Fig. 1 is a longitudinal sectional front view showing the internal structure of the case, Fig. 2 is a side view of the case, and Fig. 3 is a view of the ventilation fan inside the case. It is a perspective view showing an attached state. 1... Evaporator, 2... Compressor, 3... Condenser,
8...Case, 13...Pedestal, 15...Exhaust duct, 16...Intake duct, 17...Top surface, 18...
...Ceiling surface, A...Intake chamber, B...Exhaust chamber.

Claims (1)

[Scope of utility model registration request] The compressor 2 and the engine E are housed in a case 8, and both the condenser 3 and the evaporator 1 are placed on the top surface of the case 8, and a pedestal 1 is placed on the bottom surface of the case 8.
Furthermore, in the space of this pedestal 13, at least one of an intake duct 16 and an exhaust duct 15 for the engine E housed in the case 8 is housed, and the condenser 3 and the evaporator 1 are connected to each other. An intake/exhaust space is provided which is formed by the upper surface 17 of the case 8 placed thereon and the ceiling surface 18 of the inner space of the case 8. This engine-driven heat pump has an exhaust chamber B that discharges the air inside 8 to the outside, and the intake chamber A and the exhaust chamber B are horizontally partitioned and adjacent to each other.