JPH0737063Y2 - Drain water treatment structure of air conditioner - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain water treatment structure for an air conditioner.

[0002]

2. Description of the Related Art Generally, in an air conditioner such as a ceiling-embedded type, an air heat exchanger having a drain pan and a secondary side (downstream side) of the air heat exchanger are disposed in a casing. The air blower blows air sucked through the air heat exchanger to the outside (atmosphere) of the casing. In this case, the moisture in the air sucked through the air heat exchanger by the blower during cooling is stored in the drain pan as drain water when passing through the air heat exchanger. When the blower is arranged on the secondary side of the air heat exchanger, the upstream side of the blower becomes the positive pressure side, while the downstream side of the blower becomes the negative pressure side, and therefore, the drain water stored in the drain pan is blown by the blower. Due to the negative pressure action of the above, it becomes difficult to be drawn to the positive pressure side and discharged through the drain pipe connected to the drain pan.

Therefore, in the prior art, for example, actual Kaihei 2-6231 is used.
As disclosed in Japanese Patent Laid-Open No. 2 (1993), a drain water treatment structure is used in which a drain pump having a drain pump for pumping drain water in a drain pan to a drain discharge port is provided in the middle of a drain pipe. ing.

In order to prevent the drain water from being drawn toward the positive pressure side by the negative pressure action of the blower, a trap portion for the positive pressure by the blower is provided in the drain pipe while increasing the height of the drain pan, and the drain water is drained by its own weight. A drain water treatment structure in which drain water is easily discharged through a pipe may be used.

[0005]

Incidentally, even in the case where the conventional drain-up device is provided, it is preferable to provide the drain pipe with a trap portion for positive pressure by the blower. In that case, since the drain-up device is attached to the drain pipe at the site where the air conditioner is installed, the trap part is also constructed at the site like the drain-up device.

Further, in the case where the drain-up device is provided as described above, when the drain pipe and the drain-up device are arranged, the restriction of the arrangement place becomes large, and the degree of freedom of workability is reduced.

The present invention has been made in view of the above points, and an object thereof is to eliminate the work of installing a trap portion and a drain-up device in the drain pipe on which the air conditioner is installed, while eliminating the need for the drain pipe. In addition, the present invention provides a drain water treatment structure for an air conditioner in which restrictions on the location of the drain up device are eliminated and the flexibility of workability is expanded.

[0008]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a solution means devised by the invention according to claim 1 is as a drain water treatment structure of an air conditioner, in a casing (1),
An air heat exchanger (3) having a drain pan (28) and a blower (21) arranged on the secondary side of the air heat exchanger (3) are provided, and the air heat exchanger (21) is provided by the blower (21). It is assumed that the air conditioner is designed so that the air sucked in through 3) is blown out to the casing (1). Then, in the casing (1), a drain pipe (51) connected to the drain pan (28) and provided with a trap portion (57) for preventing reverse flow of drain water, and the drain pipe (51) A drain up device (56) having a drain pump (55) for pumping drain water flowing down through the trap section (57) to a drain discharge port (54) is integrally provided.

Further, a solution means devised by the device according to claim 2 is an air heat exchanger (1) having a first drain pan (28) in a casing (1) as a drain water treatment structure of an air conditioner. 3) and a blower (21) arranged on the secondary side of the air heat exchanger (3), and the casing (1) located on the secondary side of the casing (1). Is equipped with a humidifier (47) having a second drain pan (48) outside, and the air taken in through the air heat exchanger (3) by the blower (21) is blown out of the casing (1). It is premised on an air conditioner which is then blown into the atmosphere via a humidifier (47). A first drain pipe (51) connected to the first drain pan (28) and provided with a first trap portion (57) for preventing backflow of drain water, and the casing (1); Second drain pan (2
A second drain pipe (52), which is connected to 8) and is provided with a second trap portion (58) for preventing backflow of drain water;
Drain for drawing up drain water flowing down through the first trap part (57) of the drain pipe (51) and the second trap part (58) of the second drain pipe (52) at the head up to the drain discharge port (54) The drain up device (56) having the pump (55) is integrally provided.

[0010]

With the above construction, in the device according to claim 1,
A drain pipe (51) connected to the drain pan (28) and provided with a trap (57) for preventing backflow of the drain water, and drain water flowing down from the drain pipe (51) are discharged to the drain outlet (5).
Since the drainage device (56), which has the drain pump (55) that pumps up to 4), is installed integrally with the casing (1), the trap part (57) is installed at the site where the air conditioner is installed. Also, it is not necessary to install the drain-up device (56) on the drain pipe (51).

A drain up device (56) having a drain pipe (51) provided with a trap portion (57) as described above and a drain pump (55) is provided integrally with the casing (1). Therefore, when arranging the drain pipe (51) and the drain up device (56), there is no restriction on the place of arrangement.

According to the second aspect of the invention, a first drain pipe (51) connected to the first drain pan (28) and provided with a first trap portion (57) for preventing backflow of drain water,
A second drain pipe connected to the second drain pan (48) and provided with a second trap section (58) for preventing backflow of drain water.
(52) and the first trap portion (57) of the first drain pipe (51)
And a drain pump (55) for pumping drain water flowing down through the second trap portion (58) of the second drain pipe (52) to the drain discharge port (54), respectively. Is integrated with the casing (1), the first and second trap parts (57), (58) and the drain up device (56) are installed at the site where the air conditioner is installed.
It is not necessary to install the pipes on the first and second drain pipes (51) and (52). Moreover, the second trap portion (58) provided in the second drain pipe (52) prevents negative pressure air from being bypassed to the positive pressure side via the second drain pipe (52).

As described above, the first drain pipe (51) provided with the first trap portion (57), the second drain pipe (52) provided with the second trap portion (58), and the drain pump. Since the drain-up device (56) including (55) is integrally provided in the casing (1), the first and second drain pipes
When arranging the (51), (52) and the drain-up device (56), there is no restriction on the arrangement location.

[0014]

As described above, according to the drain water treatment structure of the air conditioner of the invention of claim 1, the trap portion (5
Since the drain pipe (51) provided with (7) and the drain pump (55) having the drain pump (55) are integrally provided in the casing (1), the trap section (57) and the drain up device are provided. (56)
The work to install the air conditioner on each drain pipe (51) is not required and the on-site work for installing the air conditioner is reduced, and the location of the drain pipe (51) and drain up device (56) is The restrictions can be eliminated and the degree of freedom in workability can be expanded.

According to the drain water treatment structure of the air conditioner in the invention of claim 2, the first drain pipe (51) provided with the first trap portion (57) and the second trap portion (58) are provided. The second drain pipe (52) provided, and a drain for drawing up drain water from the first trap part (57) of the first drain pipe (51) and the second trap part (58) of the second drain pipe (52). Pump (5
Since the drain up device (56) having the above (5) is integrally provided on the casing (1), the first and second trap parts (57), (5)
8) The drain drain device (56) is installed on the first and second drain pipes (51), (52), and the second drain drain is installed while the labor required for the on-site work when installing the air conditioner is eliminated. The second trap portion (57) of the pipe (52) can reliably prevent the bypass of the negative pressure air via the second drain pipe (52). Moreover, the first and second drain pipes (51), (5
2) In addition, it is possible to expand the degree of freedom in workability by eliminating restrictions on the location of the drain-up device (56).

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

5 to 7 show an air conditioner to which a drain water treatment structure according to an embodiment of the present invention is applied.
Is a ceiling-embedded indoor unit of an air conditioner, and the casing (1) of this indoor unit (A) has a horizontally long rectangular front plate.
(1a) and a back plate (1b) having a shape substantially matching the front plate (1a)
And the left and right side plates (1c), (1d) which are also horizontally long rectangular shapes.
And a substantially square top plate (1e) and bottom plate (1f) are formed in a thin box shape having a low height. The above casing
(1) On the back plate side, the indoor heat exchanger (3) as an air heat exchanger, with the suction surface (3a) facing the air intake port (2) provided in the back plate (1b) Are placed upright.
Further, (4), ... Are air intake port mating flanges for attaching the air intake port (2) of the casing (1) to the intake side passageway (41) (see FIG. 1).

The indoor heat exchanger (3) acts as an evaporator during the cooling operation, while acting as a condenser during the heating operation. Also, the indoor heat exchanger
(3) is a refrigerant contained in a compressor housed in an outdoor unit (not shown), an outdoor heat exchanger acting as a condenser during cooling operation, and the expansion valve (11) in the indoor unit (A). The refrigerant is circulated by 12). And the refrigerant pipe
(12) is introduced into the indoor heat exchanger (3) as expanded liquefied refrigerant expanded by the expansion valve (11) after the gaseous refrigerant compressed by the compressor during the cooling operation is liquefied through the outdoor heat exchanger. Liquid side piping (13) provided in the indoor heat exchanger (3).
connected to a) and this indoor heat exchanger (3)
It is connected to the gas side pipe (13b) provided in the indoor heat exchanger (3) so that the gasified refrigerant is returned to the compressor again.

A blower (21) having a variable blow rate is disposed on the front plate side in the casing (1). The blower (21) includes a motor (23) having a shaft (22) extending in a direction orthogonal to the left and right side plates (1c), (1d) of the casing (1), and the motor (23). ) And a sirocco fan (24) attached to the shaft (22). The motor (23) is attached to the front plate (1a) via a bracket (25) having a substantially U-shaped cross section. Also,
The sirocco fan (24) is housed in the fan casing (26), and the fan casing (26) has a casing.
The suction ports (26a) facing the left and right side plates (1c), (1d) of (1) are provided as openings, and are provided on the front plate (1a) of the casing (1). An air outlet (26b) facing the air outlet (27) is opened. And
Front plate of casing (1) by sirocco fan (24)
The air taken in through the air intake port (2) of (1a) is cooled through the indoor heat exchanger (3) and then positioned on the secondary side (downstream side) of the indoor heat exchanger (3). The fan casing (26) of the blower (21) is sucked from the suction port (26a) of the fan casing (26), and is blown as conditioned air from the air outlet (27) through the air outlet (26b). In addition, the indoor heat exchanger (3) and casing
A first drain pan (28) is provided below the refrigerant pipe (5) in the (1), and the first drain pan (28) is provided with a first drain pan (28) for cooling the air in the air cooled by the indoor heat exchanger (3). Water is stored as drain water, and drain water is discharged to the outside of the casing (1) through the first drain pipe (see Fig. 1) connected to the first drain socket (29) provided at the lower end of the drain water. I am trying to do it. Reference numeral (33) is an air outlet fitting flange for attaching the air outlet (27) of the casing (1) to the outlet side passageway (42) (see FIG. 1).

A switch box (31) is attached to the left side plate (1c) (lower side in FIG. 5) of the casing (1). The switch box (31) has an operation / stop changeover switch for selectively changing the operation operation or the stop operation of an air conditioner (not shown), and the indoor heat exchanger (3) is controlled by the capacity control of the compressor in the outdoor unit. A set temperature switch is provided to control the circulating amount of refrigerant to be sent and to manually set the set air temperature based on the set air volume blown into the room by the blower (21) via the indoor heat exchanger (3). ing. In addition, the indoor heat exchanger in the casing (1) above
Between the (3) and the blower (21), the set air temperature (T1) set by the set temperature switch and the air intake port
A thermostat (32) is provided for operating or waiting (stopping) the compressor based on the intake air temperature (T2) detected by the intake air temperature sensor (32a) provided in (2). The thermostat (32) is configured such that the intake air temperature (T2) is higher than the set air temperature (T1) during the cooling operation of the air conditioner.
When the temperature becomes higher, it will turn ON, while the set air temperature
OF when the intake air temperature (T2) becomes lower than (T1)
When the air conditioner is in the cooling operation, the intake air temperature (T2) is lower than the set air temperature (T1) when the air conditioner is in the OFF operation, and the compressor is made to stand by and the indoor heat exchanger ( It is configured to regulate the amount of refrigerant circulation to 3). And O from the above thermostat (32)
The N / OFF operation signal is input to the control unit (34) configured by using the microcomputer, and the indoor heat exchanger () is set so that the room temperature becomes the set air temperature set by the set temperature switch. The set air volume (air volume) blown by the blower (21) is controlled via (3).

Further, as shown in FIGS. 1 to 4, the air intake port (2) of the casing (1) is connected to the intake side passageway (41) through the air intake port mating flange (4). Is connected to the air outlet (27) of the casing (1),
The outlet side passageway (42) through the air outlet joint flange (33)
Are connected. The outside of the casing (1) located on the secondary side of the above casing (1), that is, the outlet passage (42)
In the middle of the process, the water supplied from the water supply port (45) in the saucer (44) is immersed in the element (46) by utilizing the capillarity of the sponge type element (46) to form the casing (1). A natural evaporation type humidifier (47) is provided so as to remove moisture through the conditioned air blown from the air outlet (27) to the outlet passage (42). A second drain pan (48) is provided below the element (46) of the humidifier (47), and moisture that has not been taken away from the element (46) through the conditioned air is provided in the second drain pan (48). Is stored, and drain water is discharged to the outside of the humidifier (47) through a second drain pipe (52) connected to a drain passage (49) opening at the lower end thereof.

Then, the casing (1) of the indoor unit (1)
The first drain socket (2) to the first drain pan (28).
The first drain pipe (51) connected via 9) and the second drain pipe
A second drain pipe (52) connected to the drain pan (28) through a drain passage (49), the first drain pipe (51) and the second drain pipe (52).
A collective drain pan (53) for collectively storing drain water flowing down through the drain pipes (52), and a drain discharge port (54) above which the drain water stored in the collective drain pan (53) is stored. First drain pan (28) to pump up
The opening position of the first drain socket (29) and the drain outlet (5
A drain up device (56) having a drain pump (55) for earning a lift (Y) between the opening positions of 4) is integrally provided. The drain up device (56) is a lower surface of the casing (1).
Collect drain pan part (56a) attached to (1f)
The tower part (56) that is attached to the left side surface (1c) of the single (1) and is erected above the collective drain pan part (56a).
b) and the drain water stored in the collecting drain pan (53) is guided to the drain discharge port (54) by the collecting drain passage (50) connected to the drain pump (55). Also, in the middle of the first drain pipe (51),
A substantially S-shaped first trap portion (57) is provided, and the upper end position of the first trap portion (57) and the first drain socket (2
The trap water (T) provided between the opening position of 9) prevents the drain water from flowing back. Further, a substantially S-shaped second trap portion (58) is provided in the middle of the second drain pipe (52), and is provided between the upper and lower end positions of the second trap portion (58). The drainage water (E) is used to prevent the backflow of drain water. Then, in the drain up device (56), there is a collective drain pan.
There is a float switch (59) for pre-detecting the overflow of drain water stored in (53).
Switch (59) actuates the humidifier (47) water inlet (45)
We are trying to stop the water supply from.

Therefore, in the above embodiment, the first trap part (57) connected to the first drain socket (29) of the first drain pan (28) and preventing the reverse flow of the drain water is provided in the middle. A second drain pipe (52) connected to the drain pipe (51) and the drain passage (49) of the second drain pan (48) and provided with a second trap portion (58) for preventing backflow of drain water.
And drain water stored in the collecting drain pan (53) via the first trap portion (57) of the first drain pipe (51) and the second trap portion (58) of the second drain pipe (52). Drain pump (55) with head (Y) to pump to drain outlet (54)
Since the drain up device (56) having the and is integrally attached to the bottom surface (1f) and the left side surface (1c) of the casing (1), it is possible to install the first and second air conditioners at the site where the air conditioner is installed.
The work to install the trap parts (57), (58) and the drain up device (56) on the first and second drain pipes (51), (52) is unnecessary, and labor saving on site work when installing the air conditioner. Can be achieved. In addition, the second drain pipe (52) is provided by the second trap portion (58) provided in the second drain pipe (52).
It is possible to reliably prevent the negative pressure air from being bypassed to the positive pressure side via the.

Further, as described above, the first drain pipe (51) provided with the first trap portion (57), the second drain pipe (52) provided with the second trap portion (58), and the drain pump. Since the drain-up device (56) having (55) is integrally provided in the casing (1), the first and second trap portions are provided.
First and second drain pipes (51), (52) having (57), (58)
When placing the drain up device (56), there is no restriction on the place of placement, and there are restrictions on the placement of the first and second drain pipes (51), (52) and the drain up device (56). Without doing so, it is possible to increase the flexibility of workability.

The present invention is not limited to the above embodiment, but includes various other modifications.
For example, in the above embodiment, a collective drain pan (53) for collectively collecting drain water from the first drain pan (28) of the indoor heat exchanger (3) and drain water from the second drain pan (48) of the humidifier (47).
The drain up device (56) was equipped with a drain up device in which only the drain water from the first drain pan of the indoor heat exchanger is stored in the collective drain pan, and the drain water of this collective drain pan is sucked up by the drain pump. The device may be configured.

[Brief description of drawings]

FIG. 1 is a side view of the interior of an indoor unit with a drain-up device provided.

FIG. 2 is a plan view of a drain-up device.

FIG. 3 is a side view according to FIG.

FIG. 4 is a rear view according to FIG.

FIG. 5 is a plan view showing the inside of the indoor unit.

FIG. 6 is a side view according to FIG.

FIG. 7 is a rear view according to FIG.

[Explanation of symbols]

 1 Casing 3 Indoor Heat Exchanger (Air Heat Exchanger) 21 Blower 28 First Drain Pan (Drain Pan) 47 Humidifier 51 First Drain Pipe (Drain Pipe) 52 Second Drain Pipe 54 Drain Discharge Port 55 Drain Pump 56 Drain Up device 57 First trap section (trap section) 58 Second trap section

Claims (2)

[Scope of utility model registration request] 1. An air heat exchanger (3) having a drain pan (28) in a casing (1), and a blower (21) arranged on the secondary side of the air heat exchanger (3). Equipped with a blower (21) for casing the air sucked in through the air heat exchanger (3).
(1) In the air conditioner configured to blow out to the outside, the casing (1) is provided with a trap portion (57) connected to the drain pan (28) and preventing backflow of drain water. Drain pipe (51) and trap part from the drain pipe (51)
Air that is integrally provided with a drain-up device (56) having a drain pump (55) for pumping drain water flowing down through the (57) at a lift reaching the drain discharge port (54). Drain water treatment structure of the air conditioner. 2. The first drain pan (2) is provided in the casing (1).
An air heat exchanger (3) having 8) and a blower (21) arranged on the secondary side of the air heat exchanger (3) are provided, and the secondary side rather than the casing (1) is provided. Located at (1)
Is equipped with a humidifier (47) having a second drain pan (48) outside, and the air taken in through the air heat exchanger (3) by the blower (21) is blown out of the casing (1). Later humidifier (4
In the air conditioner in which the air is blown out to the atmosphere through 7), the casing (1) has the first drain pan (28).
Connected to the first drain pipe (51) provided with a first trap portion (57) for preventing backflow of drain water, and a first drain pipe (51) connected to the second drain pan (28) for preventing backflow of drain water. Second drain pipe (52) provided with two traps (58)
And drain water flowing down through the first trap part (57) of the first drain pipe (51) and the second trap part (58) of the second drain pipe (52) to the drain discharge port (54). A drain water treatment structure for an air conditioner, which is integrally provided with a drain up device (56) having a drain pump (55) for pumping up and down.