JPS586860B2 - Snow melting ice making equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a snow-melting and ice-making device that melts snow accumulated on the roofs of residential buildings, roads, etc., and at the same time makes ice using the snow-melting water.

Generally, methods for melting snow that accumulates on roofs, etc. include pumping up well water, groundwater, river water, etc. at a temperature of about 12 to 13 degrees Celsius and sprinkling it, heating the water to make it hot water, and using it on the roof. There are methods to melt snow by sprinkling water on the ground, circulating it through pipes installed there, and melting snow with electric heaters.

However, the second and third methods require a huge amount of energy, and the third method in particular is very inefficient as a method of using electricity, so the second and third methods are very expensive. Therefore, it is difficult to disseminate it to the general public.

The present invention was made in view of this point of view, and focuses on the fact that the amount of heat required for snow melting is equal to the amount of heat released when freezing water, and by making this heat exchange extremely efficient, snow melting is possible. At the same time, it provides a device that makes ice.

Therefore, the present invention heats the snow melting water used for snow melting on the heat release side of the heat pump, uses a part of the snow melting water obtained by the snow melting as the snow melting water again, and uses the remaining part on the heat absorption side of the heat pump. This system is characterized by making ice by cooling the snow melting water, thereby reducing the cost of heating water for snow melting and improving economic efficiency.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the snow melting and ice making apparatus of the present invention will be described in detail based on the drawings.

Figure 1 shows the case where the snow melting and ice making device of the present invention is applied to a residential building. 1 is a heat pump that heats snow melting water and cools the snow melting water to freeze it. A compressor 2 that compresses a working fluid such as a compressor 2, a condenser 3 that condenses the working fluid by releasing heat from the compressed working fluid, an expansion valve 4 that expands and vaporizes the condensed working fluid, and a compressor 2 that compresses the working fluid by releasing heat from the compressed working fluid.An expansion valve 4 that expands and vaporizes the condensed working fluid. It is equipped with an evaporator 5 that performs absorption, and circulates the working fluid in the direction of the arrow.

The snow melting water heating device 6, which uses the condenser 3 as a heat source, is for heating the snow melting water used for snow melting, and is housed in an insulated casing 7.
The condenser 3 is introduced and installed therein, and a heat receiving tube 8 is disposed for circulating snow melting water and receiving heat.

The snowmelt water cooling device 9, which uses the evaporator 5 as a cooling source, is for cooling and freezing surplus snowmelt water. An ice making tank 11 for inflow and accumulation is provided, and the cooling device 9 is installed close to an ice storage chamber 12 for storing produced ice blocks.

A snow melting water supply pipe 13 connected to the outflow end of the heat receiving pipe 8 in the heating device 6K is connected to a water sprinkler 14 similar to a sprinkler installed on the roof surface A, and is connected to a water sprinkler 14 similar to a sprinkler installed on the roof surface A to prevent snow melting on the roof surface A. Snow is melted by sprinkling water.

A pump can be used as appropriate to pump up this water for snow melting.

Sprinkled snow melting water and melted snow water are
Water is collected by a rain gutter 15 on the eaves, and a water collection pipe 16 equipped with a diversion valve 17 is connected to the rain gutter 15. At the diversion valve 17, a part of the snow melting water is used as snow melting water to receive the heating device 6. It is branched into a reflux pipe 18 that returns the water to the heat pipe 8 and a recovery pipe 19 that allows the remaining snowmelt water to flow into the ice-making tank 11 of the cooling device 9 as ice-making water, and furthermore, the diverter valve 17 drains summer rainwater. The drain pipe 20 is also branched.

A replenishment pipe 21 for replenishing warmed snow melting water from the outside can also be connected to the reflux pipe 18, if necessary.

The snow melting and ice making device configured as described above heats snow melting water in the heat receiving pipe 8 of the heating device 6 by operating the heat pump 1, and pumps this snow melting water to the roof surface A through the supply pipe 13 using a pump (not shown) for watering. Sprinkle water from the vessel 14 onto the roof surface A to melt snow.

The resulting snowmelt water is collected by the rain gutter 15 and reaches the water collection pipe 16 to the diversion valve 17.
A part of the snow melting water flows from the reflux pipe 18 to the heat receiving tube 8 again as snow melting water, and after being heated, returns in the same manner as above, and the rest of the snow melting water flows from the recovery pipe 19 to the ice making tank 11 and is cooled. After being turned into ice blocks 22 in the device 9, they are stored in the ice storage chamber 12.

The ice produced from snowmelt water in this way can be sold as a commercial product, but it can also be stored until the summer and used for air conditioning as described below.

FIG. 2 shows a case where air conditioning is performed using the snow melting and ice making device described above. In this case, the compressor 2 of the heat pump 1
The condenser 3 is driven in reverse, or the piping system of the heat pump is switched using a valve, etc., thereby switching the condenser 3 into the evaporator 5.
a, and the evaporator 5 is used as the compressor 3a.

Thus, valves 2 are provided between the supply pipe 13 and the reflux pipe 18, respectively.
The cooling pipe 26 of the cooling device 25 is switchably connected through the cooling pipes 3 and 24, and the air cooled by the cooling pipe 26K is circulated indoors by a fan 27.

To operate this cooling device, the condenser 3a is cooled by the accumulated ice blocks 22, the radiator tube 8a is cooled by the evaporator 5a, and the cooling water for cooling is supplied to the cooling tube 2 through the supply pipe 13.
The cooling water that has been heated by cooling the air in the cooling pipe 26 is returned to the heat dissipation pipe 8a from the valve 24 via the reflux pipe 18.

In addition, in order to suppress the rise in temperature of the roof surface A due to solar radiation, all or part of the cooling water for cooling is supplied to the roof surface A by a water sprinkler 14.
water from the rain gutter 15 to the water collection pipe 16 and the diversion valve 17.
When the amount of water circulating through the water sprinkling becomes insufficient, the necessary amount of water can be replenished from the replenishment pipe 21.

Note that FIG. 2 shows the case where the heat pump 1 is driven in reverse during cooling, or the heat radiation pipe 8a may be directly installed in the heat insulating casing 10 or the ice storage chamber 12 so as to be cooled by the ice blocks 22 without using the heat pump. You can also do it.

According to estimates, the cooling load can be covered by melting about 10 parts of the ice produced in winter.

The above-mentioned snow melting and ice making device can be installed in each residential building, or a center that heats snow melting water and makes ice can be connected to a large number of residential buildings through insulated pipes buried under roads or the like.

According to the snow melting and ice making apparatus of the present invention, the following effects can be expected.

a Part of the snowmelt water produced by snow melting is reused as snow melting water, and excess snowmelt water is made into ice and stored, making it possible to effectively use water resources and save energy. Moreover, since the ice block itself has economic value, the overall cost can be further reduced.

b By using the condenser of the heat pump as the heating source for the snow melting water and the evaporator of the heat pump as the cooling source for the snow melting water, the thermal energy of the snow melting water used for snow melting can be used to make ice using the snow melting water as a heat medium. Since the resulting heat is recovered by the heat released and used again to warm the water for snow melting, the overall thermal efficiency of the device is extremely high, and snow can be removed extremely efficiently with low energy consumption.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram of the snow-melting and ice-making device of the present invention applied to a residential building, and FIG. 2 is a schematic explanatory diagram of a cooling system using the same. 1... Heat pump, 3, 3a... Condenser, 5
, 5a... Evaporator, 6... Warming device, 9...
- Cooling device, 14... Water sprinkler, 16... Water collection pipe, 18... Reflux pipe, 19... Recovery pipe.

Claims (1)

[Claims] 1 Equipped with a heating device that heats snow melting water using a heat pump condenser as a heating source, and a cooling device that cools snow melting water and makes ice using an evaporator of the heat pump as a cooling source, The snow melting water heated by the above is connected to a sprinkler that sprinkles water on the snow, and a part of the snow melting water is returned to the heating device as snow melting water to a collection pipe for the snow melted by the snow melting water. A snow melting ice making device characterized in that a pipe is connected to a recovery pipe which causes the remaining snow melting water to flow into the cooling device as ice making water.