JPH09226692A - Ship airconditioner and airconditioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of airconditioning after voltage drop to a rated voltage or lower occurs in an outside machine to cause temporary stop by providing the outside machine and inside machines connected to the outside machine and continuously operating the fans of the inside machines even if the operation of the outside machine is temporarily stopped. SOLUTION: In multitype airconditioners, inside machines 2-6 in airconditioned sections and inside machines 7 in spot sections are connected to an outside machine 1 for the airconditioners set up outside a ship. If voltage drop to a rated voltage or lower results from the usage of a ship crane, e.g. the outside machine 1 is temporarily stopped. Even in such a state, the fans of the inside machines 2-7 are controlled to be kept in operation. In this way, when the voltage drop is returned to a normal value and the outside machine 1 is reoperated, no troublesome work is required for walking around rooms in which the inside machines 2-7 are set up to switch on the inside machines 2-7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marine air conditioner and an air conditioning method.

[0002]

An air conditioner is also set in a ship. In particular, air conditioning was applied not only to the cabin, but also to the steering room, sailor room, office room and dining room (so-called air-conditioned compartment), as well as to the bathroom, laundry room and toilet (so-called spot compartment). It is obligatory to send the wind.

By the way, if an air conditioner is individually attached to each of these air-conditioning compartments and spot compartments, the cost is high. Therefore, it has been attempted to use a so-called multi-type air conditioner in which a plurality of indoor units are connected to one outdoor unit. According to this, the number of outdoor units required for air conditioning was much smaller than the number of rooms required for air conditioning, and it was thought that this was suitable for installation on a ship with a limited area.

However, it has been found that there is a problem even when a multi-type air conditioner is used. That is, in a ship, a crane or the like is used for transporting containers. When using this crane, large electric power is consumed even temporarily. For this reason, a voltage drop may occur below the rated voltage of the outdoor unit, and the air conditioner may stop. At this time, the operation of each indoor unit connected to the outdoor unit also stops. By the way, in order to restart the air conditioning by the stopped air conditioner, it is necessary to operate not only the outdoor unit but also the indoor unit. However, starting the operation of each indoor unit is extremely complicated since it is necessary to turn on each room to switch on and turn on the fan of the indoor unit.

As described above, it is not sufficient to simply mount a multi-type air conditioner on a ship. Accordingly, an object of the present invention is to make it possible to use a multi-type air conditioner on a ship.

[0006]

Means for Solving the Problems The above-mentioned problem is an air conditioner provided on a ship, the air conditioner comprising an outdoor unit and a plurality of indoor units connected to the outdoor unit. The air conditioner for a ship is characterized in that the fan of the indoor unit is configured to operate even if the operation of the outdoor unit is temporarily stopped.

In particular, an air conditioner provided in a ship having an outdoor unit and a plurality of indoor units connected to the outdoor unit, the detecting unit detecting a voltage drop, and the detecting unit detecting the voltage drop. Then, the operation of the outdoor unit is temporarily stopped, and the control unit for keeping the fan of the indoor unit operating is solved by the air conditioner for a ship.

Alternatively, an air conditioner provided in a ship having an outdoor unit and a plurality of indoor units connected to the outdoor unit, wherein the detecting unit detects a voltage drop, and the voltage drop is detected by the detecting unit. Then, the operation of the outdoor unit is temporarily stopped, and the fan of the indoor unit is kept operating,
When the voltage drop returns to a normal value, it is provided with a control means for reactivating the outdoor unit, which is solved by an air conditioner in a ship.

Further, the above-mentioned problem is an air conditioning method in a ship using an air conditioner having an outdoor unit and a plurality of indoor units connected to the outdoor unit, and the operation of the outdoor unit is temporarily stopped. Even so, it is solved by an air conditioning method in a ship, characterized in that the fan of the indoor unit is operated. In particular, a method of air conditioning in a ship using an air conditioner having an outdoor unit and a plurality of indoor units connected to the outdoor unit, and temporarily suspending the operation of the outdoor unit when a voltage drop is detected. Then, the fan of the indoor unit is kept operating, and when the voltage drop returns to the normal value, the outdoor unit is restarted.

That is, if the fan of the indoor unit is configured to operate even if the operation of the outdoor unit is temporarily stopped, a voltage drop below the rated voltage occurs in the outdoor unit due to the use of a crane or the like. Even if it wakes up and pauses, if the outdoor unit is turned on after this, the air conditioner operation will be the same as before the temporary stop due to the voltage drop because each indoor unit connected to the outdoor unit will still operate the fan. It works similarly. Therefore, it is very convenient because it is not necessary to go around each room and perform a complicated operation such as turning on the switch of the indoor unit.

Furthermore, since a plurality of indoor units are connected to one outdoor unit, the installation area of the air conditioner can be reduced, which is suitable for installation on a ship having a limited area. In addition to the configuration described above, the air conditioner provided on the ship includes an air conditioner indoor unit provided corresponding to the air conditioner compartment of the ship and a spot provided corresponding to the spot compartment. A compartment indoor unit, and an outdoor unit to which the air conditioning compartment indoor unit and the spot compartment indoor unit are connected, wherein the fan of the indoor unit is operating even when the operation of the outdoor unit is temporarily stopped. With the configuration, the maximum output of the indoor unit for spot division is configured to be smaller than the maximum output of the indoor unit for air conditioning division, particularly, the maximum output of the indoor unit for spot division is configured to be smaller than the set output of the indoor unit for air conditioning division. Is more preferable.

Further, an indoor unit for air conditioning provided corresponding to the air conditioning compartment of the ship and an indoor unit for spot compartment provided for the spot compartment, and the indoor unit for air conditioning and the spot compartment provided for the spot compartment are provided. An air conditioning method for a ship using an air conditioner including an outdoor unit to which an indoor unit is connected, wherein the fan of the indoor unit operates even when the operation of the outdoor unit is temporarily stopped. And the maximum output of the indoor unit for spot division is set to be smaller than the maximum output of the indoor unit for air conditioning division, and particularly, the maximum output of the indoor unit for spot division is set to be smaller than the set output of the indoor unit for air conditioning division. Is more preferable.

That is, with this configuration,
Not only the recovery work after a temporary drop has occurred in the outdoor unit due to a voltage drop below the rated voltage, but the air supplied to the spot compartment, which is an open space, is air-conditioned. It meets the requirements (blowers that have been air-conditioned) and the air conditioning capacity from the outdoor unit is not supplied to the indoor unit for spot partitioning over the indoor unit for air conditioning partitioning. The room is air-conditioned to a comfortable room temperature. That is, spot compartments such as bathrooms, laundry rooms and toilets are originally open unlike air-conditioning compartments such as steering rooms, sailor rooms, office rooms and dining rooms. For this reason, it is difficult to cool the spot compartment even if cold air is blown in summer, and it is difficult to warm it even if hot air is blown in winter. Therefore, the set temperature of the spot compartments is significantly deviated from the set temperature of the air conditioning compartments, and the air conditioning capacity from the outdoor unit is supplied to the indoor units for spot compartments more than the indoor units for the air conditioning compartments. . As a result,
The air-conditioning capacity supplied to the indoor unit for the air-conditioning compartment becomes relatively small, and the air-conditioning compartment also largely deviates from the set temperature, thereby impairing comfort. However, the spot compartment does not originally need temperature control like the air-conditioned compartment. It is only required by law to send conditioned air. Therefore, if configured as described above, the air-conditioning compartment is air-conditioned to a comfortable room temperature.

[0014]

FIG. 1 is a schematic view showing an embodiment of an air conditioner for a ship according to the present invention. 1 is an outdoor unit of an air conditioner installed outside a ship, 2, 3, 4,
5, 6, 7 are air conditioner indoor units connected to the outdoor unit 1,
Reference numeral 8 denotes a branch pipe BOX. Since a multi-type air conditioner including these components is publicly known, a detailed description thereof will be omitted.

The indoor unit 2 is provided corresponding to a crew room (air conditioning compartment), and the indoor unit 3 is provided corresponding to an office room (air conditioning compartment). Machine 4,
5 is provided corresponding to the dining room (air-conditioning compartment), the indoor unit 6 is provided corresponding to the bribery room (air-conditioning compartment), and the indoor unit 7 is provided in the toilet or the laundry ( (Spot compartment). Then, the conditioned air released from the indoor unit 7 is guided to a toilet or a washing room (spot compartment) via a duct (not shown).

In the marine air conditioner configured as described above, the output (maximum output) of the spot compartment indoor unit 7 is the output of the air conditioning compartment indoor units 2, 3, 4, 5, and 6. (Maximum output). That is, the opening capacity of the electronic expansion valve that controls the flow rate of the refrigerant flowing through the spot compartment indoor unit 7 is set to the air conditioning compartment indoor units 2, 3, 4, 4.
For example, half or less of the opening capacity of the electronic expansion valve that controls the flow rate of the refrigerant flowing in 5, 5 or 6, that is, the refrigerant flowing in the spot compartment indoor unit 7 is the air conditioning compartment indoor unit 2, 3, 4, 5,
When the multi-type air conditioner is operating, the output of the indoor unit for spot division 7 is controlled so that only a flow rate of less than half of the refrigerant flowing to the indoor unit 2, 3, 4, 5, 6, 6 The output is smaller than the output. In particular, when the amount of the refrigerant flowing through the spot compartment indoor unit 7 sets the capacity of the air conditioning compartment indoor units 2, 3, 4, 5, 6 to a certain value, the air conditioning compartment indoor unit 2 is automatically ，
It is designed to flow less than, for example, less than half the amount of refrigerant flowing through 3, 4, 5, and 6.

Further, even if the outdoor unit 1 experiences a voltage drop below the rated voltage due to the use of a ship crane (not shown) and stops temporarily, each of the indoor units 2 connected to the outdoor unit 1
3, 4, 5, 6, 7 fans 2a, 3a, 4a, 5a,
6a, 7a (not shown) are configured to remain operational. In particular, detecting means (not shown) for detecting a voltage drop due to use of a ship crane or the like, and when a voltage drop is detected by this detecting means, the operation of the outdoor unit 1 is temporarily stopped, and the indoor unit 2 Control means (not shown) is provided for keeping the fans 3, 4, 5, 6, and 7 operating, and for restarting the outdoor unit 1 when the detected voltage drop returns to a normal value. When the detecting means detects that a voltage drop below the rated voltage has occurred in the outdoor unit 1 due to the use of a ship crane or the like, the operation of the outdoor unit 1 is temporarily stopped, and the indoor units 2, 3, and 4 are stopped. , 5,6,7 fan 2
The a, 3a, 4a, 5a, 6a, 7a are kept operating, and the outdoor unit 1 is configured to restart when the voltage drop returns to a normal value.

With the above configuration, a voltage drop below the rated voltage occurs in the outdoor unit 1 due to the use of the ship crane. Machines 2, 3, 4, 5, 6, 7 fans 2a, 3a,
Since the outdoor units 4a, 5a, 6a, and 7a are still operating, if the outdoor unit 1 is subsequently operated by switching on, each of the indoor units 2, 3, 4, 5, 6, 6 connected to the outdoor unit 1 is operated.
Since the fans 7a, 3a, 4a, 5a, 6a, 7a of 7 remain operating, the air conditioning operation operates in the same manner as before the temporary stop due to the voltage drop. Therefore, indoor units 2, 3, 4,
It is extremely convenient because it is not necessary to go around each room where 5, 6, 7 are installed and do the troublesome work of turning on the switches of the indoor units 2, 3, 4, 5, 6, 7. is there.

The air supplied to the spot compartments (toilets and washing rooms), which are open spaces through the indoor unit 7 and the duct, is air-conditioned, so that it meets the requirements of the laws and regulations. . In addition, the air conditioning capacity from the outdoor unit 1 is not supplied to the spot compartment indoor unit 7 in preference to the air conditioning compartment indoor units 2, 3, 4, 5, and 6, that is, the spot compartment indoor unit 7 Since the air conditioning capacity is not supplied unnecessarily much, the air conditioning compartment is air-conditioned to a comfortable room temperature. In other words, in the spot compartment, air that is not air-conditioned to a comfortable temperature like an air-conditioned compartment, or in the summer, air that is air-conditioned to a higher temperature than the air that is blown into the air-conditioned compartment in winter, If it is, air conditioned to a temperature lower than the temperature of the air sent to the air conditioning compartment will be sent, so the spot compartment that is greatly affected by the outside air will not preferentially lose large air conditioning capacity, The air-conditioning capacity is supplied to the air-conditioning compartment preferentially, so that the user can spend comfortably.

Furthermore, since a plurality of indoor units 2, 3, 4, 5, 6, and 7 are connected to one outdoor unit 1, the installation area of the air conditioner can be reduced and the area is limited. It is suitable to be installed on an open ship.

[0021]

According to the present invention, even if a voltage drop below the rated voltage occurs in the outdoor unit due to the use of a ship crane, for example, even if the outdoor unit temporarily stops, the fan of each indoor unit connected to the outdoor unit can be used. Since the air conditioner remains operating, if the outdoor unit is operated by switching on thereafter, the air conditioning operation operates in the same manner as before the temporary stop due to the voltage drop. Therefore, it is not necessary to go around each room in which the indoor unit is installed and perform a complicated operation such as turning on the indoor unit, which is extremely convenient.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an embodiment of an air conditioner in a ship according to the present invention.

[Explanation of symbols]

1 outdoor unit (outdoor unit of air conditioner installed outside the ship) 2,3,4,5,6 indoor unit (indoor unit for air conditioning section) 7 indoor unit (indoor unit for spot division) 8 diverting pipe box

Claims (5)

[Claims] 1. An air conditioner provided on a ship, wherein the air conditioner comprises an outdoor unit and a plurality of indoor units connected to the outdoor unit, and the operation of the outdoor unit is temporarily stopped. Even if the fan of the indoor unit is configured to operate, the air conditioner for a ship. 2. An air conditioner provided on a ship having an outdoor unit and a plurality of indoor units connected to the outdoor unit, the detecting unit detecting a voltage drop, and the detecting unit detecting the voltage drop. Then, the air conditioner for a ship, comprising: a control unit that temporarily stops the operation of the outdoor unit and keeps the fan of the indoor unit operating. 3. An air conditioner provided on a ship having an outdoor unit and a plurality of indoor units connected to the outdoor unit, the detecting unit detecting a voltage drop, and the detecting unit detecting the voltage drop. Then, the operation of the outdoor unit is temporarily stopped, the fan of the indoor unit is kept operating, and when the voltage drop returns to a normal value,
An air conditioner for a ship, comprising: a control unit for reactivating the outdoor unit. 4. A method of air conditioning in a ship using an air conditioner having an outdoor unit and a plurality of indoor units connected to the outdoor unit, wherein the indoor unit is operated even when the operation of the outdoor unit is temporarily stopped. A method for air conditioning in a ship, characterized in that the fan of the machine is operated. 5. A method for air conditioning in a ship using an air conditioner having an outdoor unit and a plurality of indoor units connected to the outdoor unit, the operation of the outdoor unit when a voltage drop is detected. Is temporarily stopped, the fan of the indoor unit is kept operating, and the outdoor unit is restarted when the voltage drop returns to a normal value.