JPH0343542Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a heat pump type air conditioner in which drain water accumulated in the base is sprayed onto an outdoor heat exchanger using a ring.

(b) Prior Art Conventionally, an example of the structure of this type of heat pump air conditioner has been disclosed in Japanese Patent Publication No. 56-19543.

According to this content, the drain pan disposed below the outdoor heat exchanger is equipped with a heater that heats drain water and a pump that sucks up the drain water. During heating operation, drain water generated by the outdoor heat exchanger is received by a drain pan, heated by a heater, and the warmed drain water is sucked up by a pump and sprinkled onto the heat exchanger.

(c) Problems that the invention aims to solve In this structure where drain water is heated with a heater and sprinkled on the heat exchanger, unless the drain water is heated to a relatively high temperature, the sprayed drain water will be exposed to outdoor heat. There was a risk that the exchanger would become more prone to freezing, requiring frequent defrosting operations to melt the ice adhering to the heat exchanger.

Furthermore, since a heater is used, there is a risk that the electric capacity will increase.

(d) Means for solving the problem The heat pump type air conditioner of the present invention has a drain pan that receives drain water provided with a partition piece, and connects this drain pan to an auxiliary receiving part in which a water sprinkling mechanism is installed and this auxiliary receiving part. It is divided into a main receiving part which communicates with the main receiving part and where the outdoor heat exchanger is located, and this main receiving part is equipped with a drain valve that opens when the temperature inside the machine falls below a predetermined value. .

(E) Effect According to the heat pump type air conditioner of the present invention,
During cooling operation, the drain water generated by the indoor heat exchanger is received by the auxiliary receiving part of the drain pan and is sprinkled onto the outdoor heat exchanger by the water sprinkling mechanism, and at the same time, the drain water generated by the outdoor heat exchanger during heating operation is When the temperature inside the machine is low, the drain water is drained to the outside via the drain valve, and when the temperature inside the machine is high, the drain water overflows from the main receiver to the auxiliary receiver, and this auxiliary water is drained from the main receiver. The drain water accumulated in the receiving part is sprayed onto the outdoor heat exchanger using a water sprinkling mechanism.

(f) Embodiment In Fig. 1, 1 is a window type air conditioner that can perform cooling and heating operations, and includes an outer box 2, a main body 3 housed in the outer box, and a main body 3 mounted on the front of the main body. It is composed of a front panel 4.

A suction port 5 and an operation section 6 are formed on the left side of the front panel 4, and a discharge port 7 is formed on the right side.

As shown in FIGS. 2 and 3, the main body 3 is divided into an indoor side A and an outdoor side B by a partition plate 9 erected on a base 8. This base 8 also serves as a drain pan for receiving drain water, which will be described later. 1
0 is a fan motor, which is located on the outdoor side surface 11 of the partition plate 9.
is fixed. One rotating shaft 12 of this motor passes through the partition plate 9 and projects toward the indoor side A. On one of the rotating shafts 12 is a Sirotskov fan 1.
3 is installed. Further, a propeller fan 15 is attached to the other rotating shaft 14.

On the indoor side A, a casing 16 of a Sirotskov fan 13, an indoor heat exchanger 17, and a drain pan 18 are arranged.Rotation of the fan sucks indoor air through the suction port 19 of the casing 16 and guides it through the indoor heat exchanger 17. I'm trying to tremble. This drain pan 18 is arranged one step higher than the base 8, and the drainage part 20 faces the outdoor side B so that the drain water accumulated in the drain pan 18 drips onto the outdoor side B of the base 8.

On the outdoor side B, an outdoor heat exchanger 21, an air guider 22, a compressor 23, and a drain valve 24 are arranged. The air guider 22 is arranged on the windward side of the outdoor heat exchanger 21, and a top plate (not shown) is fixed to the upper edge of the air guider 22. 25 is an opening of the air guider 22, in which the propeller fan 15 is disposed. Reference numeral 26 denotes a slinger ring fixed to the outer periphery of the propeller fan 15. As the fan 15 rotates, the slinger ring 26 also rotates to scrape up drain water accumulated on the outdoor side B of the base 8. Also, by rotating the fan 15, outdoor air is guided from the right side 27 of the base 8 to the suction outdoor heat exchanger 21. 28 is a supercooling pipe arranged along the outdoor side B of the base 8, and during cooling operation, the refrigerant from the outdoor heat exchanger 21 flows through it, and the drain water accumulated in the base 8 cools the refrigerant flowing inside the pipe. . A notch 29 is formed on the lower side of the air guider 22 to guide drain water on the base 8 onto the base inside the air guider 22. 30
is a partition piece extending from the left side to the right side of the base 8, and the outdoor side B of the base 8 is divided into an auxiliary receiving part 31 where the air guider 22 and the slinger ring 26 are arranged, and a main receiving part where the outdoor heat exchanger 21 is arranged. It is divided into a section 32. 33 is a drain outlet formed in the main receiving portion 32, and a drain valve 24 is disposed therein. This drain valve 24 is a rubber valve body 34 that opens and closes the drain port 33.
, a bellows 35 that moves this valve body 34 , and a temperature sensing section 36 . Then, the temperature sensor 36 senses the outdoor temperature near the base 8, and this temperature is 15.
When the temperature is below 15°C, the gas inside the bellows 35 contracts and the valve body 34 is moved upward to open the drain port 33, while when the temperature is above 15°C, the valve body 34 closes the drain port 33.
Close.

With this configuration, during cooling operation, the drain water dripping from the indoor heat exchanger 17 is transferred to the drain pan 1.
8 and is guided from the drainage section 20 to the auxiliary receiving section 31. And this drain water is air guider 22
The air moves through the notch 29 onto the auxiliary receiving part 31 in the air guider 22, is scooped up by the slinger ring 26, and is blown onto the outdoor heat exchanger 21. Drain water that has not been completely evaporated in the outdoor heat exchanger 21 drips from the outdoor heat exchanger 21 and is received by the main receiving portion 32. And this main receiving part 32
When the water level of the drain water received by the drain water becomes higher than the height of the partition piece 30, the drain water flows over the partition piece 30 into the auxiliary receiving part 31. On the other hand, Slinger Ring 2
When the amount of drain water scraped up in step 6 is small and the water level of the drain water in the auxiliary receiving part 31 becomes higher than the height of the partition piece 30, the drain water flows over the partition piece 30 into the main receiving part 32. In addition, during cooling operation, the outdoor temperature
It is extremely rare for the temperature to drop below 15° C., and since the drain port 33 is closed by the valve body 34, there is very little possibility that drain water will flow out from the drain port 33.

On the other hand, during heating or defrosting operation, drain water dripping from the outdoor heat exchanger 21 is received by the main receiving part 32. When the outside temperature is 15° C. or lower, the drain port 33 is opened by the action of the drain valve 24, so that drain water drips from the drain port 33.

In other words, during heating or defrosting operation,
If the outside temperature is low (15℃ or less), the auxiliary receiving part 31
The drain water is not allowed to flow and the outdoor heat exchanger 21 is not sprinkled with drain water. Also, the outside temperature is 15
If the temperature is above ℃, the drain port 33 is opened by the action of the drain valve 24.
is closed, and the drain water is stored in the main receiving part 32. When the level of this drain water becomes higher than the height of the partition piece 30, the drain water flows over the partition piece 30 into the auxiliary receiving part 31. Thereafter, water is sprinkled onto the outdoor heat exchanger 21 using the slinger ring 26, similar to the cooling operation. When drain water is sprinkled onto the outdoor heat exchanger 21 in this way, the outside air temperature is relatively high (15°C or higher).
Therefore, there is no fear that the drain water in which the slinger ring 26 is soaked will freeze and the propeller fan 15 will not rotate.

In the above embodiment, the opening/closing operation of the drain valve 24 is controlled by the internal temperature near the base 8, but the temperature of the drain water may be directly sensed. Furthermore, the drain water accumulated in the auxiliary receiving part may be sucked up using a pump or the like and sprinkled on the outdoor heat exchanger.

(g) Effects of the invention According to the invention, a partition piece is provided in the drain pan to divide the drain pan into a main receiving part where an outdoor heat exchanger is installed and an auxiliary receiving part where a water sprinkling mechanism is installed. In addition, both receivers are connected to each other, and the main receiver is equipped with a drain valve that opens when the temperature inside the machine falls below a predetermined value. Drain water can be stored in the outdoor heat exchanger and immediately sprayed onto the outdoor heat exchanger.

In addition, during heating operation, drain water is sprayed to the outdoor heat exchanger when the temperature inside the machine is above a predetermined value, and drain water is discharged when the temperature is below a predetermined value. The risk of water freezing can be reduced. This makes it possible to reduce the number of defrosting operations during heating operation. Furthermore, since there is no need for a heater to heat the drain water, the electric capacity can be kept small.

[Brief explanation of the drawing]

The drawings show an embodiment of the heat pump type air conditioner of the present invention. Fig. 1 is an exploded perspective view of the air conditioner, Fig. 2 is a plan view of the main body of the air conditioner, and Fig. 3 is an exploded perspective view of the air conditioner. FIG. 3 is a side view of the main body with the compressor removed. 8...Base, 17...Indoor heat exchanger, 21...
... Outdoor heat exchanger, 24 ... Drain valve, 26 ... Ring, 30 ... Partition piece, 31 ... Auxiliary receiving part, 32
...Main receiving part.

Claims (1)

[Claims for Utility Model Registration] (1) An indoor heat exchanger, an outdoor heat exchanger, a drain pan disposed below the outdoor heat exchanger, and drain water collected in the drain pan to be transferred to the outdoor heat exchanger. In a heat pump type air conditioner, the drain pan is provided with a partition piece and has a main receiving part in which an outdoor heat exchanger is disposed, and a water sprinkling mechanism that communicates with the main receiving part. The auxiliary receiving part receives drain water generated by the indoor heat exchanger, and the main receiving part receives drain water generated by the outdoor heat exchanger.
A heat pump air conditioner characterized in that the main receiving part is provided with a drain valve that opens when the temperature drops below a predetermined value. (2) The heat pump air conditioner according to claim 1, wherein the drain valve opens when the temperature inside the machine or the temperature of the drain water drops below a predetermined value.