JPH05296490A - Air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] The arrangement of the evaporator and the condenser is not restricted, the drain water is not scattered, and the change of the re-evaporation amount of the drain water can be dealt with. [Composition] An evaporator drain pan 4 is provided below the evaporator 1,
Further, condenser drain pans 5 are arranged below the condensers 2, respectively, and a drain pump 6 for feeding the drain water received by the evaporator drain pan 4 and the drain water fed are distributed to the condenser 2. Drain distributor 7 and drain tank 9 for collecting drain water from the condenser drain pan 5
To provide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having an evaporator and a condenser.

[0002]

2. Description of the Related Art As a method for re-evaporating drain water in a conventional air conditioner, a free fall type and a splash type have been proposed. As a conventional example of the free fall type, Japanese Patent Application Laid-Open No. 2-1
The structure described in Japanese Patent No. 01333 can be mentioned. In the case of this conventional example, drain water generated in the evaporator is naturally dropped into a condenser arranged below the drain pan to be re-evaporated. However, in the case of the above-mentioned free fall type, there is a problem in that the evaporator must be arranged above the condenser, which imposes restrictions on the arrangement of each device.

Further, in the case of the splash type, the drain water in the drain van is forcibly scattered as water droplets by means of a rotating blade or the like and supplied to the condenser for re-evaporation. With this method, the restrictions on placement are alleviated to a certain extent compared with the case of the above-mentioned free fall method, but dust in the drain water is concentrated, and the drain water is scattered outside the casing of the air conditioner. There is a problem that it will end up.

[0004]

By the way, in any of the re-evaporation methods of the above-mentioned air conditioner, in addition to the above-mentioned problems which each has, in the case where the re-evaporation amount of drain water decreases, There is also a problem that the drain water that does not evaporate cannot be treated on the condenser side.

The present invention has been made to solve the above-mentioned conventional drawbacks, and its purpose is not to restrict the arrangement of the evaporator and the condenser to a great extent, and to prevent the drain water from flowing outside the casing. An object of the present invention is to provide an air conditioner that can prevent scattering and can cope with changes in the amount of re-evaporation.

[0006]

Therefore, the air conditioner of claim 1 is an air conditioner having an evaporator 1 and a condenser 2, wherein an evaporator drain pan 4 is provided below the evaporator 1 and a condenser 2 is provided. Condenser drain pans 5 are respectively arranged below, a water reservoir 31 for storing drain water generated in the evaporator is provided in the evaporator drain pan 4, and a drain pump 6 for feeding the drain water in the water reservoir 31 and a drain pump 6 are provided. It is characterized by having a drain distributor 7 for distributing the liquefied drain water to the condenser 2 and a drain tank 9 for collecting the drain water from the condenser drain pan 5.

Further, in the air conditioner of claim 2, the water reservoir 31 is provided with an outflow portion 41 for outflowing the drain water when the water level of the drain water exceeds a specific value, and the outflow drain water is discharged. A drain drain pipe 10 on the evaporator side that leads to the drain tank 9 is provided.

Further, the air conditioner according to claim 3 is characterized in that the outlet end 52 of the drain distributor 7 is obliquely cut and connected to the condenser 2.

[0009]

In the air conditioner according to the first aspect, the drain water stored in the water reservoir 31 is condensed by the drain pump 6 into the condenser 2
Is sent to. Therefore, the installation position of the condenser 2 is not limited, and the drain water can be sent to the condenser 2 via the drain distributor 7 without being scattered. Further, even if the drain water is not completely re-evaporated in the condenser 2, the water can be received by the condenser drain pan 5 and can be introduced into the drain tank 9. Therefore, leakage of drain water can be prevented.

According to the air conditioner of the second aspect, in the above process, when the drain pump 6 is unable to deliver liquid, or when the drain pump 6 has reduced liquid delivery capability, the drain water amount is reduced. Even if it increases, the excess drain water is recovered from the outflow portion 41 of the water reservoir 31 through the evaporator-side drain drain pipe 10 to the drain tank 9.

According to the air conditioner of the third aspect, the drain water can be evenly distributed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the air conditioner of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view for explaining the overall structure of a spot air conditioner according to an embodiment of the present invention, and FIG. 2 is a perspective view for explaining the main parts thereof. In FIG. 2, 1 is an evaporator and 2 is a condenser. In this embodiment, the evaporator 1 and the condenser 2 are arranged in parallel. 3 is a fin. The fins 3 extend vertically in the evaporator 1 and horizontally in the condenser 2. This is because the condensed water generated in the evaporator 1 quickly flows downward, and the drain water sent to the condenser 2 stays on the fins 3 until re-evaporated. Reference numeral 4 is an evaporator drain pan, and 5 is a condenser drain pan. The evaporator drain pan 4 is arranged below the evaporator 1, and the condenser drain van 5 is arranged below the condenser 2. Further, in this embodiment, the drain pan 4 for the evaporator is used.
And the condenser drain van 5 are integrated. 6 is a drain pump, and 7 is a drain distribution pipe. The drain water is absorbed by the drain pump 6 and sent to the drain distribution pipe 7 via the passage 8. Reference numeral 9 denotes a cartridge-type removable drain tank. Reference numeral 10 denotes an evaporator-side drain drainage pipe, which is connected and fixed to the evaporator drain pan 4. 1
Reference numeral 1 denotes a condenser side drain drain pipe, which is connected and fixed to a condenser drain pan 5. Further, the drain tank 9 is provided with an evaporator-side recovery hole 12 and a condenser-side recovery hole 13, respectively. The evaporator-side drain drain pipe 10 is provided in the evaporator-side recovery hole 12 and the condenser-side drain drain pipe. 11 are respectively inserted into the condenser side recovery holes 13 so that excess drain water or drain water that has not been re-evaporated is guided to the drain tank 9 through the drain drain pipes 10 and 11.

In FIG. 1, reference numeral 14 denotes an air flow, which is generated by the evaporator fan 15 and the condenser fan 16. Reference numeral 17 denotes an electric motor for a fan, which rotates the fans 15 and 16 described above. Reference numeral 18 is a cold air outlet, and 19 is an exhaust air outlet. The air flow 14 passes through the evaporator 1 and is blown to the cold air outlet 18 and passes through the condenser 2 and is blown to the exhaust air outlet 19. 20 is a float switch for detecting the amount of drain water in the drain tank 9.

FIG. 3 shows the structure of the drain pan 4 for the evaporator in detail. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3 and also shows the positional relationship with the drain pump 6. Figure 3
In the above, reference numeral 31 is a water reservoir, and 32 is a coarse dust collecting grid. The water reservoir 31 includes a first water receiving portion 33 and a second water receiving portion 33.
It is composed of a water receiving part 34 and is partitioned by a coarse dust collecting grid 32. And this oversized dust removal grid 32
Prevents coarse dust from flowing into the second water receiving section 34. Reference numerals 35, 36, and 37 denote partitions that surround the drain pan 4 for the evaporator so that drain water as condensed water can be retained. 38 is a water collecting part, and the second water receiving part 34
It is recessed so that the drain water collects in the approximate center.
Further, as shown in FIG. 4, the drain pump 6 is arranged such that its suction port 39 is located above the water collecting portion 38. 40 is a 3rd water receiving part. Reference numeral 41 is a weir (outflow portion), which partitions the second water receiving portion 34 and the third water receiving portion 40. Further, the drain water pipe 10 is connected to the third water receiving portion 40. 42 is the upper edge of the weir. The height of the upper edge 42, that is, the distance from the bottom of the drain pan 4 to the upper edge 42 is lower than that of the partitions 35, 36, 37.

FIG. 5 is a sectional view of the portion B of FIG. 2, showing a structure in which the drain distribution pipe 7 is connected to the upper portion of the condenser 2. Reference numeral 51 is a tube plate of the condenser 2, and 52 is an outlet end of the drain distribution pipe 7, and the drain distribution pipe 7 is fitted and fixed to the tube plate 51. The outlet end 52 has an obliquely cut shape, which prevents the outlet from being blocked by the fins 3 extending in the horizontal direction, and the drain water that is fed by contacting the plurality of fins 3 is evenly distributed. It has become popular.

In the air conditioner having the above structure, when the operation of the apparatus is started, water is condensed and condensed on the surface of the evaporator 1, particularly the surface of the fins 3. The drain water travels through the fins 3 extending in the vertical direction of the evaporator 1 and drops on the first water receiving portion 33 of the evaporator drain pan 4. The drain water dropped on the first water receiving portion 33 is guided by the partitions 35 and 37, and further flows into the second water receiving portion 34 through the coarse dust collecting grid 32. At this time, coarse dust and the like are prevented from flowing into the second water receiving section 34 by the coarse dust removing grid 32. The drain pump 6 is started simultaneously with the operation of the device or when the amount of drain water accumulated reaches a specific water level. The operation is performed continuously or intermittently during the operation of the device. Then, the drain pump 6 absorbs the drain water accumulated in the second water receiving section 34 from the suction port 39 of the drain pump 6 and sends it to the drain distribution pipe 7. When the drain pump 6 is operating normally,
The second water receiving section 34 will maintain a substantially constant water level,
No trouble will occur. However, if the drain pump 6 fails for some reason and the operation is stopped, and it becomes impossible to transfer the drain water or the capacity is reduced,
As indicated by the arrow, the drain water can overflow from the second water receiving section 34 to the third water receiving section 40 over the upper edge 42 of the weir 41. In addition, in the third water receiving section 40,
Since the drain drain pipe 10 that communicates with the drain tank 9 is provided, the drain water from the second water receiving section 34 is collected in the drain tank 9. By the above action, it is possible to prevent the drain water from leaking out of the air conditioner.

The drain water sent to the drain distribution pipe 7 having two ports by the drain pump 6 flows out onto the fin 3 from the outlet end 52. Since the outlet end 52 is obliquely cut, it can contact the plurality of fins 3 extending in the horizontal direction,
Drain water is distributed to the plurality of fins 3 and uneven flow is prevented. In this embodiment, the drain distribution pipe 7 has two ports, but the number of ports may be increased in order to more evenly distribute the drain water to the condenser 2. If the entire drain water supplied cannot be completely re-evaporated in the condenser 2,
The non-evaporated drain water is received by the condenser drain pan 5, and can be collected in the drain tank 9 without leaking to the outside by the drain drain pipe 11 opening in the condenser drain pan 5.

Although the specific embodiments of the integrated air conditioner of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications may be made within the scope of the present invention. It is possible. For example, in the above-described embodiment, the evaporator 1 and the condenser 2 are provided side by side, and the drain pans 4 and 5 are integrated, but the drain pans 4 and 5 are separated and the evaporator 1 is provided below the condenser 2. May be arranged.

[0019]

As described above, in the air conditioner according to the first aspect, the arrangement of the evaporator and the condenser is not limited, the dust in the drain water is not concentrated, the splash is not generated outside the casing, and the re-evaporation is performed. Even if the amount of water changes and it cannot be re-evaporated and drain water is generated, it can be collected in the drain tank and leakage of drain water can be avoided.

According to the second aspect, the drain water can be collected in the drain tank even when the drain pump fails and stops, or when the liquid feeding force decreases.

According to the third aspect, the drain water can be evenly distributed, so that the re-evaporation can be performed more efficiently.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an air conditioner of the present invention.

FIG. 2 is a perspective view illustrating a main part of the above embodiment.

FIG. 3 is a perspective view illustrating the structure of the drain pan for an evaporator of the above embodiment.

FIG. 4 is a cross-sectional view taken along arrow A in FIG.

5 is a cross-sectional view illustrating details of a B portion in FIG.

[Explanation of symbols]

 1 Evaporator 2 Condenser 4 Evaporator drain pan 5 Condenser drain pan 6 Drain pump 7 Drain distributor 9 Drain tank 10 Evaporator side drain drain pipe 31 Water reservoir 41 Outlet 52 Outlet end

Claims (3)

[Claims] 1. An air conditioner having an evaporator (1) and a condenser (2), wherein an evaporator drain pan (4) is provided below the evaporator (1) and a condenser is provided below the condenser (2). A drain pump for arranging the drain pans (5), providing a water reservoir (31) for storing the drain water generated in the evaporator in the evaporator drain pan (4), and feeding the drain water in the water reservoir (31) (6), a drain distributor (7) for distributing the sent drain water to the condenser (2),
An air conditioner comprising: a drain tank (9) for collecting drain water from the condenser drain pan (5). 2. The water reservoir section (31) is provided with an outflow section (41) for outflowing drain water when the water level of the drain water reaches or exceeds a specific value, and the outflow drain water is stored in the drain tank (31). 9) Evaporator drain drain pipe (1)
0) is provided, The air conditioner of Claim 1 characterized by the above-mentioned. 3. The outlet end (5) of the drain distributor (7).
The air conditioner according to claim 1 or 2, wherein 2) is obliquely cut and connected to the condenser (2).