KR20010058211A - A contraflow preventing apparatus for drain water of air conditioner - Google Patents

Abstract

PURPOSE: A device for preventing a counterflow of drain water is provided to avoid a counterflow of drain water to a drain pump even if the drain pump fails or a drain hose is improperly installed and to restrain leakage of the counterflow drain water out of an air conditioner through a drain panel. CONSTITUTION: A device for preventing a counterflow of drain water comprises a drain pump(110) installed in a drain panel(60) to pump drain water(condensate water) collected in the drain panel, a drain hose(120) connected to an outlet terminal of the drain pump to vertically flow the drain water pumped via the drain pump to a specific height(h) and drain thereafter in a specific gradient, and a check valve(130) installed in the drain hose to restrain a counterflow of the drain water. When a counterflow occurs or drain water doesn't flow, a valve body installed in the upper portion of the check valve moves downwardly to close an upper opening. Therefore, a counterflow of the drain water is restrained even if the drain pump fails or the drain hose is improperly installed.

Description

Drain water backflow prevention device of air conditioner {A CONTRAFLOW PREVENTING APPARATUS FOR DRAIN WATER OF AIR CONDITIONER}

The present invention relates to an air conditioner for mounting a drain pump (DRAIN PUMP) of a built-in (BUILT-IN) product (including a cassette or a duct type), and more particularly, the drain water pumped by the drain pump The present invention relates to a drain water backflow prevention device of an air conditioner capable of preventing the wastewater in advance.

In the conventional air conditioner, as shown in FIG. 1, a foundation bolt 10 is installed on a ceiling 8 such as concrete, and the body bolt 20 is suspended from the foundation bolt 10. Blowing means 30 is installed in the inner center of the main body 20 to suck air from the lower side.

A heat exchanger 40 is installed outside the blower 30 to heat-exhale the sucked air, and a drain water generated in the heat exchanger 40 is collected below the heat exchanger 40. The drain panel 60 is provided to drain the water and maintain a certain distance from the inner wall of the main body 20 to form a plurality of passages 50 in the vertical direction. BELL MOUTH PANEL 70 is provided for guiding the suction of air while maintaining a constant distance from the means 30.

At this time, the blowing means 30, the motor 31 is coupled to the center of the ceiling of the main body 20, the lower portion of the motor 31 is coaxially installed via the motor shaft 32 to the motor 31 Sirocco fan (SIROCO FAN) 33 is rotated in accordance with the drive.

In addition, the bell mouth member 70 covers the main body 20 so that the lower surface of the main body 20 is in contact with the lower surface of the drain panel 60 and the bell mouth member 70 so as not to be visible from the outside. ) Is formed so that the air inlet 81 and the air outlet 82 are formed to communicate with each other so as to be opposed to each other and the passage 50, and the grill 80 is fixed to the bottom surface of the air inlet 81 of the grill 80. The filter 90 is detachably coupled to filter the foreign matter suspended therein, and the heat insulating material 100 is attached to the inner surface of the main body 20.

In addition, a drain pump 110 is installed at one side of the drain panel 60 to pump drain water (condensed water) collected in the drain panel 60, and at the outlet end of the drain pump 110, a drain pump ( The drain hose pumped from 110 to flow vertically to a predetermined height h according to the head of the drain pump 110, and after that the drain hose to be drained while maintaining a predetermined downward gradient (θ) 120 is connected.

In the drawings, reference numeral 6 denotes a ceiling plate on which the concrete and the like are spaced apart from the ceiling 8 by a predetermined distance.

However, in the conventional apparatus for preventing the drain water backflow of the air conditioner, the drain pump 110 is provided at one side of the drain panel 60, and the drain pump 110 is disposed at the outlet end of the drain pump 110. According to the lift of the () is a structure in which the drainage hose 120 is disposed to be drained while maintaining a predetermined height (h) and a predetermined downward gradient (θ), this structure is the drain pump 110 is broken or Incorrect installation of the drain hose 120 has a problem in that the drain water flows back to the drain pump 110 and leaks through the drain panel 60 to the appearance of the air conditioner.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to prevent the drain water flow back to the drain pump even if the drain pump is broken or the installation of the drain hose is wrong, the reversed drain water drain panel It is to provide a drain water backflow prevention device of the air conditioner so as not to leak to the appearance of the air conditioner through.

1 is a cross-sectional view showing an air conditioner installed with a drain pump according to the related art;

2 is a cross-sectional view showing an air conditioner provided with a check valve in the drain hose according to the first embodiment of the present invention;

3 is an enlarged cross-sectional view showing part A of FIG. 2;

4 is a schematic diagram showing a state in which a check valve is installed at the outlet end of the drain pump according to the second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

60: drain panel 110: drain pump

111: outlet 120: drain hose

130: check valve

Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

For reference, the same components and the same reference numerals are assigned to the same components as the conventional components in the drawings, and detailed description thereof will be omitted.

The drain water backflow prevention device of the air conditioner according to the present invention, as shown in Figure 2, the drain is installed on one side of the drain panel 60 to pump the drain water (condensed water) collected in the drain panel 60 The drain 110 pumped from the drain pump 110 and connected to the pump 110 and the outlet end of the drain pump 110 vertically up to a predetermined height h according to the head of the drain pump 110. A drain hose 120 for draining and maintaining a predetermined downward gradient θ thereafter; and a check valve installed at one side of the drain hose 120 to prevent backflow of the drain water. It consists of).

That is, the check valve 130 is connected to the outlet end of the drain pump 110 according to the head of the drain pump 110, the drain hose 120 is arranged vertically to a predetermined height (h) It is press-fitted to the inner diameter of).

In addition, as shown in FIG. 3, the check valve 130 is press-fitted to the inner diameter of the drain hose 120 and has a hollow body 131 having an upper and a lower part opened, and the body of the body 131. It is formed integrally bent at the upper end and when the drain water flows vertically through the lower part of the check valve 130, it is operated upward by one side by the water pressure to open the upper passage and there is no reverse flow or the flow of drain water. It is composed of a valve body 132 that is closed when the operation is closed.

Next, the operation and effect of the present invention configured as described above will be described.

When the motor 31 of the blowing means 30 is driven with power, the sirocco fan 33 coupled to the end of the motor shaft 32 while the motor shaft 32 is rotated according to the driving of the motor 31. At the same time to rotate at the same speed, according to the rotation of the sirocco fan 33, the air inlet of the filter 90, the grill 80 formed in the lower end of the main body 20 in the direction of the arrow indicated by the air in the room ( 81), the bell mouth member 70, the sirocco fan 33 is sucked into the main body 20 through the procedure.

At this time, the sirocco fan 33 diffuses the air sucked into the lower center of the sirocco fan 32 radially through the outer periphery of the sirocco fan 33 according to the shape of the blade and the arrangement angle thereof to change the flow of air. The air diffused radially through the outer periphery of the sirocco fan 33 is forced to pass through the heat exchanger 40 installed to surround the outer periphery of the sirocco fan 33 at a predetermined distance from the outer periphery of the sirocco fan 33. In contact with the surface of the group 40, for example, in the case of a cooling cycle, heat exchange with cold air.

In addition, the heat exchanged while passing through the heat exchanger 40 hits the heat insulating material 100 surrounding the inner wall and the ceiling of the main body 20, and at the same time, the heat insulating material 100 and the drain panel with respect to the bottom edge of the main body 20. Air flows into the passage 50 formed between the 60 and the air flowing into the passage 50 is discharged into the room through the air outlet 82 of the grill 80 in correspondence with the passage 50. do.

On the other hand, the drain water (condensed water) generated on the surface of the heat exchanger 40 due to the difference between the temperature of the heat exchanger 40 and the air temperature flows down the surface of the heat exchanger 40 and at the same time heat exchanger 40 It is collected by the drain panel 60 installed at the bottom of the).

In this case, the drain pump 110 installed at one side of the drain panel 60 pumps the drain water collected in the drain panel 60 while being operated according to, for example, microcomputer control, and the pumped drain water is a drain pump. It is drained to the outside of the air conditioner along the drain hose 120 connected to the outlet end of (110).

Meanwhile, the drain water flowing back along the drain hose 120 due to a failure of the drain pump 110 or an incorrect installation of the drain hose 120 is caused by the operation of the check valve 130 installed at a predetermined position of the drain hose 120. The flow is blocked so that the flow is not reversed to the drain pump 110 side.

That is, the valve body 132 formed on the upper portion of the check valve 130 is upwardly operated at one side by the water pressure when the drain water flows vertically through the lower portion of the body 131 as shown in FIG. Open the passage, but when the back flow occurs or there is no flow of drain water is operated downward to close the top opening, even if the drain pump 110 is broken or the installation of the drain hose 120 is wrong, the drain pump ( 110 may be prevented from flowing backward, thereby preventing the reversed drain water from leaking to the exterior of the air conditioner through the drain panel 60.

In the above description, the check valve 130 has been described with reference to an example of a drain water backflow prevention device of an air conditioner installed at one side of the drain hose 120. However, the present invention is not limited thereto. As an example, as shown in FIG. 4, it may be configured to be installed in the inner diameter of the outlet end 111 of the drain pump 110.

As described above, in the drain water backflow prevention device of the air conditioner according to the present invention, by installing a check valve on one side of the drain hose connected to the outlet end of the drain pump, the drain pump fails or the drain hose is installed incorrectly. Even if the drain water does not flow back to the drain pump, the reversed drain water does not leak to the appearance of the air conditioner through the drain panel.

Claims (3)

An air conditioner having a drain pump for pumping drain water collected in a drain panel, and a drain hose receiving drain water pumped by the drain pump and draining it to the outside, One side of the drain hose, the drain water backflow prevention device of the air conditioner is installed with a check valve to prevent the backflow of the drain water. The method of claim 1, And the check valve is connected to the outlet end of the drain pump according to the head of the drain pump and installed on the drain hose side vertically arranged up to a predetermined height h. An air conditioner having a drain pump for pumping drain water collected in a drain panel, and a drain hose receiving drain water pumped by the drain pump and draining it to the outside, The drain water backflow prevention device of the air conditioner is installed at the outlet end of the drain pump to prevent the back flow of the drain water.