JPH0720488Y2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an air conditioner.

[Prior Art] FIGS. 3 and 4 are views showing a general structure of a conventional air conditioner, FIG. 3 is a plan view, and FIG. 4 is a side view.

In FIG. 3, 10 is an air conditioning room for controlling the temperature and humidity of the taken air AR. In the air conditioning room 10, a roll filter 11, a preheater 12, a filling material 13, a first eliminator 14, a cooling coil 15, a The two eliminator 16, the reheater 17, and the air supply fan 18 are sequentially arranged.

Each component such as the roll filter 11 is unitized, and a large number of inspection doors 20 are provided on the side wall of the air-conditioning room 10 corresponding to each component for convenience of maintenance and inspection of the component. It is openable and closable. These inspection doors 20
Is normally closed during operation of the air conditioner, and the inside of the air conditioning room 10 is in a negative pressure state.

Note that FIG. 3 shows a state in which each inspection door 20 is opened.

Assignments devised to be Solved] However, inspection doors _20-3 corresponding to the eliminator 14 in order to for example the inspection of first eliminator 14 (or 20
- When opening the _4), since the air conditioning chamber 10 suction force directed to the air conditioning chamber 10 is in inspection door 20- ₃ (or _20-4) to be in the negative pressure state is applied, the The door 20 against the suction force
- ₃ (or _20-4) must pull. For this reason, have the disadvantage that impose an excessive burden on the worker requires a large force to open the inspection door 20 - ₃ (or _20-4).
Also, when closing the inspection door 20- ₃ (or _20-4), said door 20- ₃ (or _20-4) is able to blow the operator closed swiftly by the action of a suction force as described above Yes There is a safety issue.

Furthermore, when opened as inspection door 20- ₃ described above (or 20- _4), results in a large amount of air through the said door continues to flow from the outside into the air conditioning chamber 10, and the air disturbance Therefore, there is an inconvenience that the temperature in the room is suddenly changed. The above description is the same when the worker leaves the air conditioning room 10 after the inspection.

In view of the above circumstances, an object of the present invention is to provide an air conditioner capable of smoothly opening and closing the inspection door and performing maintenance and inspection while preventing temperature changes in the air-conditioned room.

[Means for Solving the Problems] The present invention provides an air conditioner including an air conditioning room for controlling the temperature and humidity of the intake air, and a plurality of inspection doors provided in the air conditioning room. It is characterized in that a sub-chamber surrounding the inspection door and an entrance / exit door for communicating with the outside are provided in the sub-chamber.

[Operation] In the present invention, while the air conditioner is operating, all the inspection doors and access doors are closed in order to effectively control the temperature and humidity of the air taken into the air conditioning room. At this time, the air-conditioning room is in a negative pressure state, causing pressure imbalance with the outside, and the suction force toward the room acts on the inspection door.

For maintenance / inspection, for example, when opening one of the inspection doors, the operator first opens the entrance door to enter the sub-chamber. Next, after closing the access door and confirming that the sub chamber is sealed, the inspection door is opened. Then, the air in the sub chamber
It flows into the air conditioning room until the pressure imbalance disappears and the pressure becomes the same as the air conditioning room. At this time, since the volume of the sub-chamber is significantly smaller than that of the air-conditioning chamber, both chambers immediately have the same pressure, and the inflow of air into the air-conditioning chamber is stopped. For this reason,
Since the suction force acting on the inspection door disappears when the door is slightly opened, the inspection door can be released without applying a large force. Moreover, since the amount of air flowing into the air-conditioned room is small, the temperature in the air-conditioned room is not affected.

When the inspection door is closed, the air-conditioning chamber and the sub-chamber have the same pressure, so that the door can be closed quietly without exerting a suction force.

The above is the same even when a plurality of workers simultaneously open and close the respective inspection doors.

When the worker goes out after maintenance and inspection, open the access door after confirming that the inspection door is closed. At this time, the pressure in the sub-chamber is unbalanced with the outside, but since the volume of the sub-chamber is small, the sub-chamber immediately becomes the same pressure as the outside. Therefore, opening and closing of the door can be smoothly performed.

Therefore, it is possible to smoothly open and close the inspection door and perform maintenance and inspection while preventing the temperature change in the air-conditioned room.

[Embodiment] FIGS. 1 and 2 are views showing an embodiment of the present invention in which a plurality of inspection doors are enclosed by one sub-chamber. FIG. 1 is a plan view and FIG. It is a side view.

An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The air conditioner according to the present invention includes an air conditioning room 10 and a roll filter 1
1, preheater 12, filler 13, first eliminator 14, cooling coil 15, second eliminator 16, reheater 17, air supply fan 18,
It comprises a large number of inspection doors 20, a sub-chamber 30 which is a feature of the present invention, and a plurality of doors 31 for entrance and exit.

The same components as those shown in FIGS. 3 and 4 are designated by the same reference numerals, and the description thereof will be omitted or simplified. Further, FIG. 1 shows each inspection door 20.
Shows a state in which is opened.

The sub chamber 30 is provided adjacent to the side wall of the air conditioning chamber 10,
It is formed so as to surround all of the inspection door 20. In this embodiment, the sub chamber 30 is hermetically sealed and has an inspection door.
The volume is formed to the minimum within the range where there is no hindrance to the entry and exit of workers so that the pressure imbalance of both chambers is immediately canceled and the pressure is equalized when opening 20 and communicating with the air conditioning room 10. . It should be noted that the term "sealed" here does not mean a completely sealed state.

Each door 31 is provided on the side wall of the sub chamber 30 so as to be openable and closable. The sub-chamber 30 is moved in and out through the door 31. In the present embodiment, the doors 31 are provided at two locations on the right side wall and the central portion in the figure for convenience of entrance and exit.

Next, the operation will be described.

During operation of the air conditioner, the inspection door 20 and the door 31 are all closed in order to effectively control the temperature and humidity of the air AR taken into the air conditioning room 10. At this time, the air-conditioning room 10 is in a negative pressure state, causing pressure imbalance with the outside. Therefore, each inspection door 20
The suction force that acts toward the room acts on.

Here, for example, when a plurality of workers enter the air-conditioning room 10 to inspect the preheater 12 and the first eliminator 14, the workers first open the door 31 to open the sub chamber.
Enter within 30. Then, check the Close all and out doors 31 to the sub chamber 30 is sealed, preheater 12 and service door _20-2 corresponding to the first eliminator 14, open _20-4. Then, the air in the sub chamber 30 flows into the air-conditioning chamber 10 until the pressure imbalance described above disappears and both chambers have the same pressure.

At this time, since the volume of the sub-chamber 30 is significantly smaller than that of the air-conditioning chamber 10, both chambers immediately have the same pressure and air inflow is stopped. Therefore, the inspection door 20 - _2, since the suction force acting on the _20-4 disappears at the stage where slightly open the said door, the door _20-2 without applying a large force, opening the 20- ₄ You can

Further, since the amount of air flowing into the air conditioning room 10 is small, the temperature inside the air conditioning room 10 is not affected.

Each inspection door 20 - _2, and the air conditioning chamber 10 to close the _20-4 sub-chamber 30
Since bets becomes the same pressure, these doors 20- _2, does not act the suction force is in the 20- _4, it can be quietly closed.

If the worker is to go outside after inspection, the inspection door 20
- _2, after it is confirmed that the _20-4 is closed all, open the door and out 31. At this time, the pressure in the sub-chamber 30 is unbalanced with the outside, but since the volume of the sub-chamber 30 is small, the sub-chamber 30 immediately becomes the same pressure as the outside. Therefore, the door 31 can be smoothly opened and closed.

Thus, according to this embodiment, since the sub-chamber 30 that surrounds the entire inspection door 20 and the plurality of doors 31 that connect the sub-chamber 30 to the outside are provided, the air conditioning room 10 It is possible to smoothly open and close the inspection door 20 and prevent maintenance and inspection while preventing temperature changes.

As shown by the chain double-dashed line in FIG. 1, the air-conditioning room 10 and the auxiliary room 30
A pressure adjusting valve 41 for communicating with the air conditioner may be provided on the side wall of the air conditioning chamber 10. With this configuration, by operating the pressure adjusting valve 41 prior to opening the inspection door 20, it is possible to reduce the pressure imbalance by connecting the air conditioning chamber 10 and the sub chamber 30. Further, the inspection door 20 can be opened with a slight force.

Further, as shown by a chain double-dashed line in FIG. 1, a pressure adjusting valve 42 may be provided for communicating the sub chamber 30 with the outside. With this configuration, it is possible to open and close the door 31 when entering and exiting the sub chamber 30 more smoothly, as in the case where the pressure regulating valve 41 is provided.

Further, although the sub-chamber 30 is formed so as to surround all of the inspection doors 20, the sub-chamber 30 is divided and formed so as to individually surround each inspection door 20, and The above-mentioned door 31 may be provided in each of the chambers 30.

[Advantage of the Invention] According to the present invention, since the sub-chamber surrounding the inspection door and the entrance / exit door for communicating with the outside are provided in the sub-chamber, the maintenance / control while preventing the temperature change in the air-conditioned room Inspections can be performed smoothly.

[Brief description of drawings]

1 and 2 are views showing an embodiment of the present invention. FIG. 1 is a plan view and FIG. 2 is a side view. 3 and 4 are views showing a general structure of a conventional air conditioner, FIG. 3 is a plan view, and FIG. 4 is a side view. 10 ... Air-conditioning room, 20 ... Inspection door, 30 ... Sub-room, 31 ... Entrance / exit door.

Claims (1)

[Scope of utility model registration request] 1. An air-conditioning room for controlling the temperature and humidity of the intake air,
In an air conditioner formed including a large number of inspection doors provided in the air conditioning room, a sub-chamber surrounding the inspection door and an entrance / exit door for communicating with the outside are provided in the sub-chamber. Air conditioning system to.