JP3065841U - Backflow prevention device attached to dehumidification drain pipe of air conditioner - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent backflow of dehumidification drainage of a separation type air conditioner into a room when indoor pressure is reduced by using a ventilation fan or the like in a highly airtight room. SOLUTION: A container (1) for storing water and a check valve (4).
When the dehumidified water accumulates in the container in a certain amount, even if the indoor pressure is reduced and the check valve is closed for a long time, the water is discharged little by little under water pressure.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention reduces the indoor air pressure even when a highly airtight indoor ventilation fan or cooking exhaust fan is used at the same time when the dehumidifying water generated in the indoor unit is discharged outside when using a separate type air conditioner. This is a device related to a non-return valve with a container, which prevents the back flow of dehumidified water into the room due to the above, and enables a certain amount of drainage even when the ventilation fan etc. are used continuously.

[0002]

[Prior art]

 As a conventional air conditioner drain drainage device, there is known a drainage device disclosed in Japanese Utility Model Laid-Open No. 5-47717, and as this type of product, various independent check valves for supply / drainage or supply / exhaust are known. ing.

[0003]

[Problems to be solved by the invention]

 Products using the conventional technology had a single check valve attached to the dehumidification / drainage pipe, so if the ventilation fan etc. were continuously used, the indoor air pressure would drop and the check valve would remain closed for a long time. However, the dehumidified water stays in the drainpipe, causing sound to flow due to the suction bubbles, and overflowing from the indoor unit when the drainpipe is short.

[0004] Furthermore, conventional products are of a type that uses electric power for the operation of the device, or are often tied to the wall of the drain pipe outlet or the wall of the drain pipe outlet with a fixed band or the like, and are limited to installation locations. Had a problem.

[0005] The present invention is intended to solve such a conventional problem, and an object of the present invention is to allow the dehumidification drainage to flow backward to the indoor side even when the indoor air pressure is reduced during use of the separation type air conditioner. In addition, the ventilation fan can be used continuously, and there is no need for power supply and there is no need to fix it to the wall, so that it can be installed without restriction on the mounting position.

[0006]

[Means for Solving the Problems]

 To achieve the above object, as an example, a cylindrical container (1) made of synthetic resin and having a diameter of about 6 cm and a length of about 12 cm is placed vertically, and an inflow pipe having an inner diameter of about 16 mm is placed at the center of a circular lid at the top of the container. (2) is connected, an outflow pipe (3) having an outer diameter of about 16 mm and a check valve (4) are provided on the lower side surface of the container, and the water storage container and the check valve are integrated.

[0007] The cylindrical container (1), the inflow pipe (2), the outflow pipe (3), and the check valve (4) may be made of metal.

In addition, the dimensions of the cylindrical container (1), the inflow pipe (2), and the outflow pipe (3) can be changed according to the flow rate of the dehumidified water, the capacity of the ventilation fan, etc., and the dimensions of the connection pipe. it can.

Further, the shape of the cylindrical container (1) may be a substantially rectangular cylinder or a hexagonal cylinder.

[0010]

[Effect of the invention]

 The present invention is configured as described above, and has the following effects.

[0011] In the backflow prevention device of the first aspect, since the container and the check valve are integrated, even when the indoor air pressure is reduced and the check valve is closed for a long time, a certain amount of dehumidified water remains in the container. When stored, the water pressure loosens the check ring, drains little by little, and prevents the infiltration of odors and pests from the drain pipe.

[Brief description of the drawings]

FIG. 1 is a sectional view of the present apparatus.

FIG. 2 is an elevational view of the apparatus.

FIG. 3 is an overall perspective view of the present apparatus.

[Explanation of symbols]

 1, cylindrical container 2, inflow pipe connection 3, outflow pipe connection 4, check valve

Claims (1)

[Utility model registration claims] 1. A cylindrical container (1) made of a synthetic resin is placed vertically, an inflow pipe (2) is connected to a central portion of a circular lid on an upper part of the container, and an outflow pipe (3) is provided on a lower side surface of the container. A backflow prevention device provided with a backflow prevention valve (4) and attached to a dehumidification drainage pipe of a cooling machine.