JP3094601B2 - Air conditioner for toilet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet air conditioner provided with a refrigeration cycle.

[0002]

2. Description of the Related Art A toilet air conditioner in which a condenser is arranged in a low tank is disclosed in Japanese Patent Application Laid-Open No. 2-115632. This toilet air conditioner radiates the heat generated in the condenser to the washing water in the low tank, thereby eliminating the need for an outside air intake / exhaust duct and reducing costs. It can be installed.

[0003]

However, when the flushing water is drained from the low tank and the condenser is exposed in the low tank, the amount of heat radiation is reduced or the heat cannot be released. And there is a problem that sufficient cold air cannot be obtained. In flush toilets, flush water is automatically supplied into the low tank along with drainage of flush water, but it is difficult to uniformly cool the condenser even if the water supply port is simply directed to the condenser. . The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a toilet air conditioner capable of cooling even from the start of supplying water for washing until the condenser is submerged. It is.

[0004]

As a specific means for solving the above-mentioned problems, there is provided a refrigeration cycle in which a refrigerant compressor, a condenser, a decompression device and an evaporator are sequentially connected, and a low tank for storing washing water is provided. In the toilet air conditioner provided with the condenser, there is provided a toilet air conditioner provided with a water spraying unit for spraying water for washing, which is supplied to the low tank at the time of washing, to the condenser.

[0005]

According to the above-mentioned toilet air conditioner, the watering means uniformly sprays the washing water supplied into the low tank to the condenser disposed in the low tank, thereby enabling heat dissipation and lowering the cooling capacity. To prevent

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a toilet air conditioner. The refrigeration cycle A provided in the toilet air conditioner includes a pressure reducing device 4 including a refrigerant compressor 2, a condenser 3, a capillary tube 4a, and the like in a refrigerant circulation path 1, an evaporator 5 provided with a blower 5a, and an accumulator 6 sequentially. Is interposed. The condenser 3 is formed by forming a refrigerant inflow pipe 8 and a refrigerant outflow pipe 9 at both ends of a coiled winding part 7 and connecting the refrigerant to the refrigerant circulation path 1 as shown in FIG. The section 7, the refrigerant inflow pipe 8 and the refrigerant outflow pipe 9 are arranged substantially vertically, and are disposed in the low tank 11 of the flush toilet 10. Above the coiled winding part 7, a watering device 12 in the shape of a bowl is installed. The sprinkler 12 is provided with a plurality of small holes 12a.

A water supply pipe 13 is provided along the side wall and the bottom surface of the low tank 11, and the tip is bent substantially vertically.
The bent tip portion 14 is passed through the center of the coiled winding portion 7 so that the upward water supply port 15 corresponds to substantially the center of the water sprinkler 12. A water supply valve 16 is provided on a water supply pipe 13 along the side wall of the low tank 11. When the water level of the rinsing water w supplied into the low tank 11 reaches the set water level, the water supply valve 16 is closed by the operation of the float 17 which rises following the water level and stops the water supply. Also, the low tank 11
Inside, the flushing water w is supplied to the toilet bowl 10 of the flush toilet 10.
A drain valve device 18, an overflow pipe, and the like (not shown) are provided.

[0008] The operation of the refrigeration cycle A provided in the toilet air conditioner of the above configuration is already well known.
The operation of the condenser 3 will be mainly described below. Condenser 3
The high-temperature and high-pressure gas refrigerant sent to is cooled by the washing water w in the low tank 11 and condensed and liquefied. At this time, since the heat of the gas refrigerant is radiated to the washing water w, the temperature of the water near the coiled winding portion 7 of the condenser 3 locally rises, and convection toward the water surface occurs. . Above the coiled winding part 7, a sprinkler-shaped sprinkler 12 is installed.
Since the small holes 12a are formed in the sprinkler 12, the convection toward the water surface is not hindered, and the washing water w in the low tank 11 is uniformly stirred.

FIG. 3 shows the cooling capacity characteristics of the refrigeration cycle A in the above operating state. However, the temperature of the washing water w at the time of water supply is 20 ° C., and the capacity of the washing water w stored in the low tank 11 is 8 liters. 2 after starting operation after water supply
After 0 minutes, the washing water w rises to about 38 ° C. Therefore, the amount of heat radiation from the condenser 3 is reduced, and the cooling capacity of the refrigeration cycle A is reduced from about 510 kcal / h to 470 kcal / h.
kcal / h.

On the other hand, after use of the flush toilet,
When the flushing water w is supplied to the toilet 10 from below, the float 17 descends following the descending water level of the low tank 11, and the water supply valve 16 is opened to start water supply. Then, water spouts from the upward water supply port 15 of the bent end portion 14 of the water supply pipe 13 toward the sprinkler 12. A part of the water inverted by the sprinkler-shaped sprinkler 12 flows out from the small hole 12a, but most of the water falls along the inner curved surface onto the coil-shaped winding portion 7 to cool the condenser 3.

FIGS. 4A and 4B show the sprinklers 12 as described above.
Is a comparison between the cooling capacity when the condenser 3 is actively cooled by using the water cooling apparatus and the cooling capacity when the sprinkler 12 is not used. However, the time from the start of water supply to the completion of water supply is 2
The time until the condenser 3 is submerged is 80 seconds from the start of water supply. When the sprinkler 12 is not used, as shown in FIG. 4 (a), after the washing water w flows from the low tank 11, the amount of heat radiation from the condenser 3 decreases until the condenser 3 is submerged by water supply. And the heat dissipation becomes impossible, and the pressure of the high-pressure gas refrigerant further increases, resulting in an increase in power consumption. Further, in this state, even if the condenser 3 is submerged, it takes 2 minutes + α rise time until the high pressure of the gas refrigerant does not drop immediately and the cooling capacity is restored to the initial state, and during this time sufficient cooling capacity is obtained. I can't show it.

On the other hand, when the condenser 3 is actively cooled by using the water sprinkler 12, the water immediately flows from the water sprinkler 12 to the condenser 3 when the water supply is started, and the water w The amount of heat released is 4 to 5 times that of convection (the heat transfer rate is 4 to 5 times that of natural convection heat transfer). The cooling capacity increases for 80 seconds from the start of water supply, and the capacity of the refrigerant compressor 2 is increased. 525 kcal / h governed by Accordingly, during this period, the capacity of 525-510 = 15 kcal / h can be improved as compared with the initial cooling capacity (510 kcal / h). When the sprinkler 12 is used in this manner, the cooling capacity does not decrease even during the supply of water, and the cooling capacity is rather advantageous (see the hatched portion in FIG. 4B). By positively dissipating heat as described above, the high-pressure side pressure in the refrigeration cycle A can be kept low, the power consumption can be reduced, and the initial cooling capacity can be exhibited immediately after the condenser 3 is submerged. There is.

FIG. 5 shows another embodiment in which water is sprayed on the condenser 3, and FIG. 5 (a) shows an embodiment in which water is sprayed to the condenser 3 from obliquely above using the shower nozzle 22, and FIG. ) Shows a mode in which the perforated plate 32 is disposed below the downward water supply port 35 to spray water.

[0014]

According to the present invention, the water supply means has the above-mentioned structure, and the water spray means uniformly sprays the washing water supplied into the low tank to the condenser disposed in the low tank. There is an effect that it is possible to provide a toilet air conditioner that can exhibit sufficient cooling capacity even before the condenser is submerged in water.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a toilet air conditioner according to the present invention.

FIG. 2 is an enlarged perspective view of a condenser and a sprinkler.

FIG. 3 is a graph showing the cooling capacity of the refrigeration cycle according to the present invention.

FIG. 4 is a graph comparing the cooling capacity with and without using a sprinkler.

FIG. 5 is a schematic perspective view showing another watering mode.

[Explanation of symbols]

2. Refrigerant compressor, 3. Condenser, 4. Decompression device,
5 ... evaporator, 11 ... low tank, 12 ... water sprinkler, 22 ... shower nozzle, 32 ... plate.

Claims (1)

(57) [Claims] 1. A toilet air conditioner comprising a refrigeration cycle in which a refrigerant compressor, a condenser, a decompression device, and an evaporator are sequentially connected, and wherein the condenser is arranged in a low tank for storing washing water, An air conditioner for a toilet, comprising a watering means for watering washing water to be supplied to a low tank to the condenser.