JPH0764315B2 - Air conditioner for ship - Google Patents

Description

TECHNICAL FIELD The present invention relates to an air conditioner mounted on a ship to cool and heat the interior of a ship.

[Conventional technology]

The conventional marine air-conditioning system is diverted and used for domestic use (for automobiles, buses, etc.), and is not specifically set for marine use.

[Problems to be Solved by the Invention]

Therefore, since it is not set in consideration of the function for ships, the mountability on the hull is poor, and the pump for water supply used for heat exchange of the refrigerant by flowing water through the outdoor heat exchanger, When a non-self-contained pump having no self-sufficiency is used, there is a problem that the water supply is poor.

The present invention has been made in view of the above circumstances, and provides a water supply unit that integrates water supply-related components among the components of a marine air-conditioning system, and provides a water supply head to a non-self-contained pump. Accordingly, it is an object of the present invention to provide an air conditioner for a ship, which has improved mountability on a hull and improved water transfer to an outdoor heat exchanger.

[Means for Solving the Problems]

The present invention, in order to achieve the above object, in a marine air conditioner that uses water as a heat exchange medium for exchanging heat with a refrigerant of a refrigeration cycle, an outdoor heat exchanger that is heat-exchanged by water, and the outdoor heat exchanger. A non-self-contained pump that supplies water to the vessel, a filter that is upstream of the pump and passes the water, and a water supply sensor that is between the pump and the outdoor heat exchanger and that detects the flow of water. The filter, the pump, and the water supply sensor are connected by a hose to set an integrated water supply unit, and the water intake from the outside provided on the water supply unit and the water inlet for supplying priming water provided on the filter are provided. Is disposed at a position higher than the water supply port of the pump, and a hose connecting the water intake port and the water supply port is formed in a trap shape.

[Action]

According to the above means, the filter, the pump, and the water supply sensor are an integrated water supply unit, so that it is not necessary to connect these devices again.

In addition, since the water intake from the outside of the ship and the water injection port of the filter are located higher than the water intake of the non-self-contained pump, even if the draft surface of the ship is lower than the water intake. , By supplying the priming water from the water inlet of the filter, the water is sent to the non-self-contained pump to enable self-sufficiency of the pump. On the other hand, if the draft surface of the ship is higher than the water intake, the water intake The water from the outside is sent to the pump by the drop of the hose formed in the shape of a trap, and the pump is self-sufficient.

〔Example〕

 The present invention will be described below with reference to the embodiments shown in the drawings.

First, the overall configuration will be described based on the refrigerant circuit diagram shown in FIG.

In FIG. 3, 1 is an engine, 2 is a refrigerant compressor rotatably driven by the engine 1, and an electromagnetic four-way valve 3 that switches the flow direction of the refrigerant sent from the discharge side of the compressor 2.
Is connected to the outdoor heat exchanger 4 via. The outdoor heat exchanger 4 functions as a condenser during cooling operation and as an evaporator during heating operation. The outdoor heat exchanger 4 is connected to the indoor heat exchanger 6 via a pressure reducing device 5 including a capillary tube 5a for thermally adiabatically expanding the refrigerant and a nozzle 5b. The indoor heat exchanger 6 functions as an evaporator during cooling operation and as a condenser during heating operation. The indoor heat exchanger 6 is connected again to the absorption side of the compressor 2 through an accumulator 7 that separates the refrigerant into a gas-liquid through the four-way valve 3 and draws out the gas refrigerant.

In the cooling operation, the refrigerant flows in the direction of the solid arrow in the figure,
In heating operation, the refrigerant circulates by flowing in the direction of the dotted arrow in the figure.

On the other hand, a non-self-contained pump 12 (hereinafter referred to simply as pump 12) that takes in and discharges a filter 11 having a check valve 11a for passing seawater through a manual cock 18 from a seawater inlet (described later) provided at the bottom of the ship. Is called)) and is connected to the outdoor heat exchanger 4 via the water supply sensor 13 for detecting the presence or absence of water supply, and is connected to the outdoor heat exchanger 4 via the manual cock 19 to the outside of the ship. A seawater supply circuit for 4 is constructed. Here, in the present invention, the filter 11, the pump 12, and the water supply sensor 13 are formed as a water supply unit 10 which is connected and integrated by a hose described later.

The seawater flows in the direction shown in the figure, is taken in from the bottom of the ship, and is discharged to the outside of the ship.

Next, the water supply unit 10, which is a main part of the marine air-conditioning system of the present invention, will be described with reference to FIGS. 1 and 2.

The seawater inlet 21 is connected via a hose 14 to a filter 11 having a built-in check valve 11a, and the filter 11 is connected via a hose 15 to a pump 12. The check valve 11a prevents the water in the pump 12 from flowing backward and causing water to escape from the pump 12 when the ship is landed or when air conditioning is stopped. Here, the seawater intake 21 and the water inlet 23 of the filter 11 are
It is installed at a position higher than the 12 water inlets 25 and the pump
The water supply unit 13 is connected to the water supply sensor 13 via the hose 16 and the water supply unit 10 is formed by the above.

In addition, 22 is the outdoor heat exchanger 4 for the seawater that has passed through the water supply sensor 13.
An outlet for sending water to (not shown), 24 is a drain port of the filter 11, 26 is a drain port of the pump 12, and these drain ports 2
4,26 are used as drain holes at the off season.

The water supply unit 10 is attached and fixed to the base of the ship bottom via the bracket 30 with bolts or the like.

Next, the operation of the embodiment of the present invention will be described.

In addition, as shown in FIG. 3, the ship air conditioner of the present invention is
Since the well-known heat pump cycle is configured by rotationally driving the compressor 2 driven by the engine 1, description of the operation of the heat pump cycle will be omitted.

By the way, the pump 12 used for the air conditioner for ships cannot be self-sufficient without priming when the position of the pump 12 is higher than the draft surface of the ship.

Therefore, according to the present invention, as shown in FIG. 4, when the seawater intake 21 is higher than the draft surface of the ship, such as when landing on the ship, from the water injection port 23 of the filter 11 located higher than the pump 12. Pump 12 is supplied by supplying priming water
Is self-sufficient. Further, in the present invention, in order to enable self-sufficiency of the pump 12, as shown in FIG. 5, a hose 14 that connects the seawater intake 21 and the water supply port 25 of the pump 12 is used.
When the seawater intake 21 is lower than the draft surface of the ship, the water is sent from the seawater intake 21 to the pump 12 by the head and the pump 12
Will be self-sufficient.

In addition, when the ship is landed, the filter in Fig. 2 is used.
Unless drainage port 24 of pump 11 and drainage port 26 of pump 12 are used to discharge the accumulated seawater, as shown by the shaded area in FIG. 5, seawater remains on the upstream side of pump 12, Can be self-sufficient.

During periods when air conditioning is not performed, such as when the season is off, the drainage port 24 of the filter 11 and the drainage port 26 of the pump 12 are opened to discharge all the accumulated seawater. In addition, the cock 18 on the seawater intake side and the cock 19 on the seawater discharge side shown in FIG.
It is opened when air conditioning is performed and closed when air conditioning is not performed.

Next, in this embodiment, seawater was used as the heat exchange medium of the outdoor heat exchanger 4, but in the case of a ship in a river or the like, naturally, fresh water is used as the heat exchange medium.

Further, although the present embodiment is applied to the heat pump type air conditioner, it can be applied to a refrigeration cycle other than the heat pump type.

[Advantages of the Invention] As described above, the present invention forms a water supply unit by integrating a filter for supplying water to the outdoor heat exchanger, a pump, and a water supply sensor, and thus connects these devices. This saves time and effort, and improves the mountability on the hull.

Further, since the water intake from the outside of the ship and the water inlet of the filter are arranged at a position higher than the water intake of the non-self-contained pump, even when the draft surface of the ship is lower than the water intake, By supplying the priming water to the water inlet of the filter, the non-self-contained pump can be self-sufficient, so that the water supply to the outdoor heat exchanger is improved.

[Brief description of drawings]

FIG. 1 is a front view showing a water supply unit of an air conditioner for a ship according to the present invention, FIG. 2 is a view as seen from A in FIG. 1, and FIG. 3 is a refrigerant showing a water intake / drainage circuit together. Circuit diagrams, FIGS. 4 and 5 are schematic diagrams showing the relationship between the draft surface of a ship and water supply. 4 …… outdoor heat exchanger, 10 …… water supply unit, 11 …… filter, 12 …… pump, 13 …… water supply sensor, 14,15,16 …… hose, 21 …… water intake, 23 …… filter Water inlet, 25 …… Pump water inlet.

Claims (1)

[Claims] 1. An air conditioner for a ship, which uses water as a heat exchange medium for exchanging heat with a refrigerant of a refrigeration cycle, an outdoor heat exchanger for exchanging heat with water, and a non-self-contained water supplying water to the outdoor heat exchanger. Type pump, a filter that passes water on the upstream side of the pump, and a water supply sensor that detects the flow of water between the pump and the outdoor heat exchanger, the filter, the pump, and the water supply sensor A water supply unit that is connected by a hose and is integrated, and the water intake from the outside provided on the water supply unit and the water inlet for supplying priming water provided on the filter are provided from the water supply port of the pump. An air conditioner for a ship, characterized in that it is arranged at a high position, and a hose connecting the water intake port and the water supply port is formed in a trap shape.