JP6948711B2 - Exhaust hot water heat regeneration device and exhaust hot water heat regeneration system using it - Google Patents

Description

The present invention relates to a technique of taking in geothermal energy from the ground and storing it in the ground. In particular, the heat energy of wastewater and solar heat energy can be stored in the ground and stored in the ground. Not only the field of manufacturing and providing equipment that can use the heat energy for snow melting, air conditioning, hot water supply, etc., but also the field of providing and selling equipment and equipment necessary for its transportation, storage, assembly and installation. In the field of providing materials required for these materials, machinery and parts, such as wood, stone, various fibers, plastics, and various metal materials, electronic parts incorporated in them, and control-related products that integrate them. Fields commonly referred to as industrial machinery, such as the field of equipment, the field of various measuring instruments, the field of power machinery that operates the equipment and appliances, the field of electricity that is the energy and the field of electricity and oil that are the energy sources, and more. Is generated with the operation of the equipment and equipment for testing and researching those equipment and equipment, the fields related to their exhibition, sale, import and export, the general, the result of their use and the equipment and equipment for making it. There are no technical fields that are not related to the fields related to the collection and transportation of waste waste, the recycling field that efficiently reuses the waste waste, and other new fields that cannot be envisioned at this time.

(Point of interest)
From the past, the underground temperature-prone layer with a depth of 5 to 10 m or more, which exceeds several meters (shallow layer) underground, is constant at around 15 ° C without being affected by temperature changes on the ground surface, and in winter, the outside air Since it is warmer than the temperature and lower than the outside air temperature in summer, it has been used as a heat source for heat pumps such as air conditioners and water heaters.

(Conventional technology)
For example, as typified by the one proposed in Patent Document 1 (1) below, it has a heat transfer pipe that is buried substantially vertically in the ground and a communication portion that folds back the air conditioning fluid at the lower end. Then, between the tube body inserted into the heat transfer tube, a screw-shaped fin that surrounds the tube body and rises spirally, and the inner and outer edges of the tube body abut against the outer surface of the tube body and the inner surface of the heat transfer tube is provided to heat the heat transfer tube. An air conditioner that forms a spiral fluid conduit for a medium and uses the underground temperature to increase the heat exchange rate with the underground temperature difficult layer, and a tubular body as seen in Patent Document 1 (2). However, the lower end of the pipe is buried in the ground so that it reaches the groundwater zone, and a through hole is provided at the lower end of the pipe to store ground water in the pipe, while from the upper part of the pipe. It has been a long time since a heat exchanger was hung and submerged so as to reach the inside of the water storage at the lower end, and an air conditioner using ground water was developed in which fluid was circulated through the heat exchanger to air-condition the room.

Further, a heat exchange liquid such as an antifreeze liquid is put into the hollow portion of the foundation pile buried in the ground, which is shown in Patent Document 1 (3), and an intake pipe and a drain pipe are piped in the hollow portion. A heat exchange system in which a feed pipe is connected to the intake pipe and a return pipe is connected to the drain pipe, and the above heat exchange liquid is sent to the heat exchanger piped and installed in the specified location, circulated and returned to the foundation pile. In, each foundation pile is connected to the feed pipe and the return pipe via an intake pipe and a drain pipe in parallel with each other, and a sluice valve is connected in the middle of the intake / drain pipe, and is also appropriate. A water leak detector is installed at the position, so it is not necessary to bury a special heat transfer tube, equipment costs can be reduced, and even if liquid leaks from the foundation pile, the sluice valve is closed to generate heat. A heat exchange system using a foundation pile that does not cause problems such as the exchange liquid flowing into the groundwater and destroying the environment, and that the heat exchange system can be maintained without repairing the foundation pile simply by closing the sluice valve. In the above-mentioned vertical heat exchange in an underground heat storage device that stores warm summer heat in the ground using a vertical heat exchange pile and uses it for melting snow in winter, as proposed in Patent Document 1 (4). By installing piles in 4 columns and 4 rows or more at intervals of 1.2 m to 3 m, an integrated heat storage tank is created in the ground around the group pile, and the heat stored in the heat exchange pile is dissipated to the surroundings. There are some underground heat storage devices that utilize the group pile effect to suppress this and reduce heat loss.

However, all the techniques for acquiring and utilizing the underground heat energy of the underground temperature-prone layer by heat exchange, as represented by Patent Document 1 (1) to Patent Document 1 (4), are generally 50 m underground. It is necessary to make a core by boring to a depth of 100 m or about 24 m even for shallow objects, and install a pile for vertical heat exchange in it. In the case of shallow boring, multiple verticals are required. It is necessary to prevent heat diffusion by installing multiple heat exchange piles at intervals of 1.2 m to 3 m, and in each case there is a fatal drawback that installation costs a lot. there were.
(1) Japanese Patent Application Laid-Open No. 58-16824 (2) Japanese Patent Application Laid-Open No. 58-16853 (3) Utility Model Registration No. 2528737 (4) Japanese Patent No. 3878932

The problem that the invention tries to solve the underground thermal energy of the underground temperature difficult layer

(Problem awareness)
As mentioned above, all of the various technologies that have been proposed so far to acquire and utilize the underground heat energy of the underground temperature-prone layer by heat exchange require boring work, and in most cases, 50 m to 100 m underground. Due to the depth of the energy, the construction cost is high and the maintenance cost of the pump is high. Installed in a shallow underground that can significantly reduce construction costs and pump maintenance costs in view of the fact that it has not been put into practical use until now due to the problem that it is easily affected by water and cannot store heat. This has made me keenly aware of the need to develop new technologies for utilizing underground thermal energy that are possible.

(Purpose of Invention)
Therefore, the present invention makes it possible to significantly reduce the construction cost and the maintenance cost by making it possible to install it in the shallow layer underground, and also takes in the underground heat energy from the underground temperature difficult layer while being installed in the shallow layer underground. Not only is it possible to store heat, but even in winter, domestic wastewater and solar energy, which are said to be around 20 ° C to 40 ° C, are stored in the shallow underground, and this heat storage energy is used for various purposes such as snow melting, air conditioning, and hot water supply. From the judgment that it is possible to develop a new heat storage energy technology buried in the shallow underground that can be used in Japan, we quickly started the development and research, and conducted long-term trial and error and many trials and experiments. As a result of repeating the process, we have finally succeeded in realizing a hot water waste heat regeneration device having a new structure and a hot water waste heat regeneration system using the same. In the following, the present invention shown in the drawings is represented. The configuration will be described in detail together with the examples.

(Structure of Invention)
As is clearly understood from the examples representing the present invention shown in the drawings, the waste hot water heat regeneration device of the present invention basically has the following configuration.
That is, the tank body, which is either a horizontal cylinder type or a vertical cylinder type, is surrounded by a top heat insulating wall and a surrounding heat insulating wall installed in the shallow basement of the residential site equipped with a bathroom. A heat storage material layer that is buried in the area and is capable of transferring and storing the geothermal heat from the deep underground is provided in the shallow heat storage area between the tank body and the top surface heat insulating wall and the surrounding heat insulating wall. The downstream of the drainage pipeline that supplies hot water from the bathroom of the house is connected to the tank body, leaving the upper layer water in the tank body with a large amount of heat storage according to the amount of wastewater supplied, and the tank with a small amount of heat storage. A hot water storage tank with a water storage level adjustment mechanism that maintains the full water level of the tank body while giving priority to low-rise water in the main body and draining it to the outside of the tank body, and a hot water storage tank that can transfer heat to the tank body. The downstream side of the heat collection tube is connected to the upstream side of the feed pipe, the upstream side of the heat exchanger circulation pump is connected to the downstream side of the feed pipe, and the downstream side of the heat exchanger circulation pump is connected to the heat exchanger. upstream is my connected, upstream of the tube returned to the downstream of the heat exchanger Wa is my connected, downstream of the return pipe upstream of my said Tonetsu pipe connected crocodile, heat transfer fluid is filled therein It has a heat medium circulation circuit, a heat exchange unit temperature sensor that detects the temperature of the heat exchange unit of the heat exchanger, and an underground temperature sensor that detects the underground temperature near the hot water drainage storage tank in the shallow heat storage area. Upon receiving the detection signals of the heat exchanger temperature sensor and the underground temperature sensor, the heat exchanger circulation pump is driven when the heat exchanger temperature of the heat exchanger is higher than the underground temperature. Heat is stored in the hot water storage tank and in the heat storage material layer in the shallow heat storage area where the hot water storage tank is buried, and the heat exchanger circulation pump is driven when the heat exchanger temperature of the heat exchanger is 2 ° C or less. Then, the heat is controlled so as to maintain the heat exchanger temperature of the heat exchanger at 1 ° C. or higher, and the circulation pump for the heat exchanger is driven when the heat exchanger temperature becomes 20 ° C. or higher. An automatic control unit is provided to control, and when the temperature rises in summer, etc., the heat absorbed from the heat exchanger is stored in the shallow heat storage area, and there is a risk of snow accumulation or freezing in winter. Under certain circumstances, the waste hot water heat regeneration device is configured to automatically dissipate the heat storage energy in the shallow heat storage area from the heat exchanger.

More specifically, the hot water storage tank is provided with a heat supply pipe on at least one of the inside and outside of the tank body, and the downstream side of the heat supply pipe is connected to the upstream side of the circulation pump for the collector. , The downstream side of the circulation pump for the collector is connected to the upstream side of the solar collector, the downstream side of the solar collector is connected to the downstream side of the heat supply tube, and the solar sensor or solar heat sensor. The hot water exhaust heat regeneration device according to any one of the above, wherein an automatic control unit having at least one of the above is configured to control the circulation pump for the collector.

(Related Invention 1)
The present invention relates to the above-mentioned waste hot water heat regeneration device which is the basis of the present invention, and the present invention also includes a waste hot water heat regeneration system using the same.
That is, a plurality of the exhaust hot water heat regenerators according to any one of the above are arranged adjacent to each other to form one exhaust hot water heat regenerator group, and two or more adjacent hot water exhaust heat regenerators in the exhaust hot water heat regenerator group. The heat medium circulation circuit of the above is shared and connected to each other so as to form a parallel circuit with one heat exchanger circulation pump. It is a playback system.

In other words, the exhaust heat heat regeneration system included in the present invention is a heat collecting pipe wound around the outer peripheral wall of the target water supply pipe in an extrinsic spiral shape so that heat can be transferred, and snow melts under the surface layer of the pavement. The vessel is buried, the upstream of the circulation pump having an automatic control device equipped with an atmospheric temperature sensor is connected to the downstream of the heat collection tube, the downstream of the circulation pump is connected to the upstream of the snow melting device, and the upstream of the snow melting device is connected. A fluid circulation circuit is provided in which the upstream of the heat collection tube is connected to the downstream of the snow melter, and the antifreeze liquid as a heat exchange fluid fills the fluid circulation circuit, and the circulation pump is used when the temperature is 2 ° C or less. Is activated, the snow melting device is melted, and when the atmospheric temperature is 4 ° C or higher, the circulation pump is activated, and the water heat snow melting device is controlled to store heat in the ground through the heat sampling tube, and It can be said that the hot water waste heat regeneration device according to any one of the above is incorporated in the same building and uses the hot water waste heat regeneration device according to any one of the above.

As described above, according to the waste hot water heat regeneration device of the present invention, unlike the conventional one, due to the unique characteristic configuration as described above, if it is the conventional one, it is discarded together with the discharge to the drainage channel. The heat energy such as domestic wastewater was stored in the shallow underground, and the underground heat energy from the deep underground was taken in and stored, and this heat energy was used for snow melting in winter and air conditioning throughout the year. Since it can be used for various purposes such as hot water supply, it is possible to significantly reduce the high heat cost of the house, significantly reduce the amount of carbon dioxide emissions, and realize a more natural environment-friendly and comfortable life. It is possible to obtain the excellent feature of becoming.

In addition, it is possible to significantly reduce the installation cost compared to the one that had to be installed by excavating to a depth that reaches the underground temperature difficult layer while being installed in the shallow underground, and further, it is eliminated. The hot water storage tank is located between the outer periphery of the hot water storage tank and the top heat insulating wall and the surrounding heat insulating wall in the shallow heat storage area surrounded by the top heat insulating wall and the surrounding heat insulating wall installed in the shallow underground. The heat storage material is filled in the water and is buried in the heat storage material layer in the shallow heat storage area so that the heat can be stored. At the same time, the geothermal heat from the deep underground can be more efficiently stored in the shallow heat storage area.

Then, when the temperature of the heat exchanger of the heat exchanger is higher than the underground temperature, the circulation pump for the heat exchanger is driven to store heat in the hot water storage tank and in the ground in the area where the hot water storage tank is buried. When the temperature of the heat exchanger of the heat exchanger is 2 ° C or less, the circulation pump for the heat exchanger is driven to dissipate heat so as to maintain the temperature of the heat exchanger of the heat exchanger at 1 ° C or higher. By doing so, it becomes effective for use in snow melters and the like.

Further, when the heat exchanger temperature of the heat exchanger becomes 20 ° C. to 40 or higher due to solar heat such as in summer, if the circulation pump for the heat exchanger is driven, the solar heat absorbed through the heat exchanger can be absorbed. Since heat can be stored in the hot water storage tank and the shallow underground around it, it is necessary to effectively utilize the solar high heat that does not generate carbon dioxide, and to realize energy utilization that is more friendly to the natural environment and has excellent safety. Can be done.
Furthermore, according to the fact that the heat supply pipe of the solar collector is arranged at least on either the inside or the outside of the tank body of the hot water storage tank, the high heat of the sun can be more efficiently transferred to the shallow underground. It becomes possible to store heat, and it is possible to realize the heat storage and utilization of solar heat throughout the year.

A hot water drainage tank consisting of a vertical cylinder type tank body is provided with a manhole near one of the top walls in the centrifugal direction, and an overflow drainage pipe as a water storage level adjustment mechanism is provided on the opposite side of the manhole. Since the manhole, the overflow drainage pipe, and the heat collection pipe arranged in the tank body can be arranged more efficiently, the hot water storage tank can be remarkably miniaturized and has a large capacity. By saving the buried space, it is possible to install it without any trouble even in a house where it is difficult to secure an outdoor space such as a densely populated residential area.
Then, in the case where a part of the heat collection tube is an external heat collection tube and the other part of the heat collection tube is an in-tank heat collection tube, the heat collection tube is inside and outside the tank wall of the tank body of the hot water storage tank. Since it is distributed in the shallow layer, heat can be stored in the shallow underground more efficiently.

If either part or all of the heat exchanger is replaced with a snow melter, heat is stored in the shallow underground in spring, summer and autumn, and this geothermal energy is used to melt or freeze the snow in the residential premises during the snowy season in winter. It can be economically used for prevention, etc., and heat can be transferred to at least one of the inside and outside of the tank wall of the tank body of the hot water storage tank for the area of 5 square meters of the heat exchange part of the snow melter. Those that are arranged and set so that the length of the heat collection tube is 75 m or more can obtain a more reliable snow melting effect, and the heat exchange part of the snow melting device as a heat exchanger is used to store hot water. By installing it so that it is placed on the ground directly above the tank, the length of the pipe is kept to a minimum, heat dissipation loss is suppressed, the heat insulation effect of the ground surface is further enhanced, and it is more efficient. It is possible to realize the use of heat storage energy.
In addition, a part or all of the heat exchanger is replaced with at least one heat pump of an air conditioner, a water heater, or a generator in various situations such as air conditioning, hot water supply, and power generation in a house. As a result, more economical energy recycling can be realized, and carbon dioxide emissions can be significantly reduced.

According to the exhaust hot water heat regeneration system using the exhaust hot water heat regeneration device which is the basis of the present invention, a plurality of exhaust hot water heat regeneration devices are arranged adjacent to each other to form one exhaust hot water heat regeneration device group, and the exhaust hot water heat is regenerated. This is because the heat medium circulation circuits of two or more adjacent hot water exhaust heat regenerators in the regenerator group are shared and connected to each other so as to form a parallel circuit with respect to one heat exchanger circulation pump. , More heat energy can be remarkably economically and efficiently stored and reusable.

Further, according to the hot water waste heat regeneration system in which the hot water waste heat regeneration device and the tap water heat snow melting device, which are the basis of the present invention, are incorporated in the same building, the water supply heat is stored in the shallow underground, and in winter. In addition to being able to be used to melt snow and prevent freezing, the heat energy of domestic wastewater can be stored in shallow underground so that it can be used in various situations in daily life, making life more economical and friendly to the natural environment. It will have a great effect of becoming something that can realize.

In carrying out the present invention having the above-described configuration, the best or desirable form thereof will be described.
The waste hot water heat regenerator stores a certain amount of domestic wastewater in the shallow underground, receives the geothermal heat from the deep underground and stores it in the shallow underground, and uses the heat energy stored in the shallow underground. A hot water storage tank with a heat collection pipe arranged so that heat can be transferred to the tank body connected to the downstream of the drainage pipeline, which has the function of taking it out to the ground according to the purpose and making it effectively usable, is located in the shallow underground. The geothermal heat from the deep underground is buried so that heat can be transferred, the upstream of the heat collection pipe is connected to the upstream of the feed pipe, and the upstream of the heat exchanger circulation pump is connected to the downstream of the feed pipe. The downstream of the heat exchanger circulation pump is connected to the upstream of the heat exchanger, the downstream of the heat exchanger is connected to the upstream of the return pipe, and the downstream of the return pipe is connected to the downstream of the heat collector. The heat medium circulation circuit connected to the alligator is filled with heat medium fluid, and the heat exchange part temperature sensor that detects the heat exchange part temperature of the heat exchanger and the underground temperature sensor that detects the underground temperature are installed. It is preferable that the automatic control unit having the heat exchanger is provided to control the circulation pump for the heat exchanger.

The drainage pipe is a route for draining the wastewater containing heat energy generated in the process of people's lives and various work using a water heater or a heating cooker to the outside, and is a hot water storage tank. In addition, the function of supplying wastewater intermittently or continuously is shared. For example, as shown in Examples described later, a large amount of hot water is discharged on a daily basis by the daily life of a general household. It is desirable to use a drainage pipe for the bathroom.

The drainage water storage tank maintains a full level of water, discharges excess wastewater to the outside according to the amount of newly supplied wastewater, temporarily stores a certain amount of wastewater, and at the same time, the tank body It has a function to transfer heat inside and outside, and heat collection pipes are arranged so that heat can be transferred to at least one of the inside and outside of the tank wall, and the ground heat from the deep underground is transferred to the shallow underground. It must be buried as much as possible, and considering the workability of manufacturing and burying, the shape of the tank body shall be either horizontal cylinder type or vertical cylinder type, and the amount of wastewater supplied. It should have a water storage level adjustment mechanism that maintains the full water level while draining water to the outside of the tank body according to the situation. In addition to being able to be closed and installed horizontally, in the case of a vertical cylinder type, steel pipes with partition walls at both ends of 1200 mm to 2000 mm in diameter can be installed vertically. ..

More specifically, the drainage water storage tank is composed of a vertical cylinder type tank body having a bottom wall and a top wall, as shown in Examples described later, and one centrifuge from the center of the top wall. A manhole with an opening / closing lid is provided at a position closer to the direction, and is horizontal in the wall thickness direction to the tank wall of the tank body, which is opposite to the centrifugal direction on one side where the manhole is provided and is closer to the other side. The drainage pipe is penetrated, and the upper end of the drainage vertical pipe whose lower end is hung down to the vicinity of the bottom wall is connected to the inner end arranged near the tank wall in the tank body of the drainage pipe. An overflow drainage pipe is provided as a water storage level adjustment mechanism consisting of a drainage vertical pipe, and when the water storage level in the tank body reaches the drainage pipe, water storage near the bottom wall in the tank body is provided through the overflow drainage pipe. It can be assumed that the overflow drainage is given priority from the above.

The shallow underground where the drainage water storage tank is buried is preferably 1 m to 5 m, and considering the burial work efficiency and work safety, it is desirable to have a depth of 1 m to 3 m. It can be said that the underground river (middle-layer underground, deep underground, underground temperature-prone layer, etc.) exceeds a depth of 4 m to 5 m.
Further, in the hot water storage tank, a heat supply pipe is arranged on at least one of the inside and outside of the tank body, and the downstream side of the heat supply pipe is connected to the upstream side of the heat collector circulation pump to collect heat. The downstream of the dexterous circulation pump is connected to the upstream of the solar collector, the downstream of the solar collector is connected to the downstream of the heat supply tube, and at least either the solar sensor or the solar heat sensor. An automatic control unit having one of them may be supposed to control the circulation pump for the collector.

The shallow heat storage area is surrounded by providing heat insulation over the top surface and the surroundings of the hot water storage tank, suppressing heat dissipation to the ground, and into the shallow heat storage area and the hot water storage tank. In addition to promoting the heat storage of the shallow layer, the function of confining the geothermal energy transmitted from the deep underground in the shallow layer underground to enable heat storage is shared, and the surroundings of the hot water drainage storage tank arranged in the shallow layer underground are shared. Surrounded by a top heat insulation wall and a surrounding heat insulation wall, a heat storage material is filled between the outer periphery of the hot water storage tank and the top heat insulation wall and the surrounding heat insulation wall, and the geothermal heat from the deep underground is stored in the shallow heat storage area. It should be embedded in the heat storage material layer so that it can transfer and store heat, and the top insulation wall and the surrounding insulation wall should have insulation walls, insulation boards, insulation mats, concrete walls, and other insulation properties. It can be made of a material that can be secured, and the heat storage material layer has the function of being filled so that heat can be stored and heat can be transferred between the outer periphery of the hot water storage tank and the top heat insulating wall and the surrounding heat insulating wall. In addition to being able to consist of earth and sand, for example, a part or all of the earth and sand is subjected to latent heat storage such as sodium acetate trihydrate (CH3COONa ・ 3H2O) and sodium sulfate 10 hydroxide (Na2SO4 ・ 10H2O). It is possible to replace it with a material.

The impermeable layer has the function of waterproofing the shallow heat storage area so that rainwater and thaw water from the outside do not flow in and cool down. If necessary, the upper part and left and right of the shallow heat storage area It can be installed to waterproofly surround the wa, and either adheres to the top and surrounding insulation walls, or otherwise covers the shallow heat storage area in a gate-like manner. If there is a cooling factor such as an underground water vein under the shallow heat storage area, it is possible to provide a waterproof layer on the lower surface of the shallow heat storage area and surround it in the shape of a cross section. It can be made of a waterproof wall, a waterproof plate, a waterproof mat, a concrete wall, a waterproof film, a resin sheet, a metal foil, or other material that can ensure waterproofness.

The heat medium circulation circuit has the function of collecting the heat energy in the hot water storage tank and its surroundings and efficiently delivering it to the heat exchanger to dissipate heat. It has a tube, and a heat exchanger and a circulation pump for the heat exchanger must be provided in the middle of the heat medium circulation circuit, and the inside must be filled with the heat medium fluid. The downstream side of the heat collection tube is connected to the upstream side of the feed pipe, the upstream side of the heat exchanger circulation pump is connected to the downstream side of the feed pipe, and the downstream side of the heat exchanger circulation pump is connected to the upstream side of the heat exchanger. The downstream of the heat exchanger is connected to the upstream of the return tube, the downstream of the return tube is connected to the upstream of the heat collection tube, and the feed tube, return tube and heat exchange The dexterous circulation pump should be surrounded by a heat insulating material to improve heat retention.

The heat collection pipe has a function of efficiently exchanging heat with the wastewater stored in the hot water storage tank, and further, has a function of collecting the geothermal heat around the hot water storage tank. It must be arranged so that heat can be transferred to at least one of the inside and outside of the tank wall of the tank body of the tank, and the heat medium fluid must be circulated inside, and a part of the heat collection tube is an external heat collection tube. The external heat collection tube is located on the outer periphery of the tank wall of the tank body, which is either the horizontal cylinder type or the vertical cylinder type of the hot water storage tank, in either the horizontal or vertical direction of the tank body. It is possible to collect the heat energy from the wastewater stored in the tank body and the geothermal energy from the deep underground stored in the heat storage material layer in the shallow heat storage area. The heat can be transferred to the tank wall and the heat storage material layer of the tank body, and the other part of the heat collection tube is the in-tank heat collection tube, and the in-tank heat collection tube is a horizontal cylinder type of the hot water storage tank. Alternatively, it may be provided inside the tank wall of the tank body, which is either of the vertical cylinder type, so that it can be submerged in the stored water in the tank body so that heat can be exchanged. As shown in the example, heat can be transferred to at least one of the inside and outside of the tank wall of the tank body of the hot water storage tank with respect to the area of 5 square meters of the heat exchange part of the heat exchanger. It is preferable that the length of the heat collection tube is set to a ratio of 75 m or more, and a flexible metal reinforced polyethylene tube having a diameter of 16 mm is attached so as to have a minimum curvature diameter of 80 mm. Can be done.

The heat exchanger has the function of making it possible to exchange heat from the underground heat storage energy collected from the hot water storage tank and the geothermal heat around the hot water storage tank via the heat medium fluid. It can be a snow melter buried under the pavement of the approach, or a snow melter installed on the roof or roof of a building, and as shown in the examples below, it is one of the heat exchangers. It is possible that either part or all of them are replaced by at least one heat pump of an air conditioner, a water heater or a generator, and the heat exchange part of the heat exchanger is a shallow heat storage. It can be installed so that it is placed directly above the area.

The circulation pump for a heat exchanger has a function of forcibly controlling the flow of the heat medium fluid filled in the heat medium circulation circuit, and is driven by an automatic control unit having a heat exchange unit temperature sensor and an underground temperature sensor. It must be controlled, and one or more of them can be provided in the heat medium circulation circuit. In addition, a plurality of waste hot water heat regeneration devices of the present invention are arranged adjacent to each other and one. A group of waste hot water heat regeneration devices, and heat medium circulation circuits of two or more adjacent hot water exhaust heat regeneration devices in the group of exhaust hot water heat regeneration devices form a parallel circuit with respect to one heat exchanger circulation pump. It can be shared and connected, for example, a positive displacement pump or a non-positive displacement pump, and more specifically, various spiral pumps, centrifugal pumps such as various turbine pumps, and shafts. Cascade pumps such as flow pumps and multi-stage pumps, viscous pumps, various piston pumps, various plunger pumps, tube pumps, diaphragm pumps, wing pumps, wing pumps, and other reciprocating pumps, various gear pumps, various eccentric pumps, various screw pumps, etc. It can be a rotary pump (rotary pump), various motor pumps, other pumps, etc.

The heat medium fluid smoothly flows through the heat collection tube, feed tube, heat exchanger circulation pump, heat exchanger and return tube of the heat medium circulation circuit, and efficiently uses the shallow heat storage energy in the hot water storage tank and its surroundings. It shares the function of collecting heat and efficiently releasing it to the heat exchanger, and is a gas, liquid, semi-liquid, semi-solid, or fluid that changes between them due to temperature changes. And so on, and as shown in Examples described later, it is possible to use an antifreeze solution.

In the hot water waste heat regeneration system using the hot water waste heat regeneration device which is the basis of the present invention, the hot water waste heat regeneration device which is the basis of the present invention is combined with a larger one or another heat storage system. For example, as shown in Examples described later, a plurality of exhaust hot water heat regenerating devices are arranged adjacent to each other to form one exhaust hot water heat regenerating device group, and the exhaust hot water heat is regenerated. The heat medium circulation circuits of two or more adjacent hot water exhaust heat regenerators in the regenerator group may be shared and connected to each other so as to form a parallel circuit with one heat exchanger circulation pump. A heat collecting pipe is wound around the outer and outer peripheral walls of the target water supply pipe in an extrinsic spiral shape, and a snow melting device is embedded under the surface layer of the pavement. A fluid circulation circuit in which the upstream of the circulation pump having an automatic control device is connected, the downstream of the circulation pump is connected to the upstream of the snow melting device, and the downstream of the snow melting device is connected to the upstream of the heat collection tube. Is provided, the fluid circulation circuit is filled with an antifreeze liquid as a heat exchange fluid, the circulation pump is started when the temperature is 2 ° C or lower, the snow melting device is melted, and the atmospheric temperature is 4 ° C or higher. A tap heat snow melting device, in which a circulation pump is activated and controlled to store heat in the ground via a heat sampling tube, and a hot water waste heat regeneration device, which is the basis of the present invention, are incorporated in the same building. It is possible to make it something like that.
Hereinafter, the structure thereof will be described in detail together with examples representing the present invention shown in the drawings.

The drawings show some typical examples embodying the technical idea of the waste water heat regeneration device of the present invention and the waste water heat regeneration system using the same.
It is a perspective view which shows the exhaust hot water heat regeneration apparatus which has a vertical cylinder type hot water exhaust water storage tank. It is a system schematic diagram which shows the heat medium circulation circuit of the waste hot water heat regeneration apparatus. It is a perspective view which shows an example of a vertical cylinder type hot water drainage water tank. It is sectional drawing which shows an example of the vertical cylinder type hot water drainage water storage tank. It is a top view which shows an example of the vertical cylinder type drainage water storage tank. It is a top view and a vertical sectional view which shows an example of the water storage level adjustment mechanism of a drainage water storage tank. It is a top view and a vertical sectional view which shows an example of the heat collection tube in a tank of a hot water drainage water storage tank. It is the top view and the vertical sectional view which shows the other example of the heat collection tube in a tank of a hot water drainage water storage tank. It is a top view and a vertical sectional view which shows still another example of the heat collection tube in a tank of a hot water drainage water storage tank. It is a perspective view which shows the exhaust hot water heat regeneration apparatus which has a horizontal cylinder type hot water exhaust water storage tank. It is sectional drawing which shows the exhaust hot water heat regeneration apparatus which has a vertical cylinder type hot water exhaust water storage tank. It is sectional drawing which shows the exhaust hot water heat regeneration apparatus which has a horizontal cylinder type hot water exhaust water storage tank. It is a plan view and a vertical sectional view which shows another example of a water storage level adjustment mechanism. It is a conceptual diagram which shows an example of the waste hot water heat regeneration system. It is sectional drawing which shows the other example of the waste hot water heat regeneration system.

In the cases shown in FIGS. 1 to 9 and 11 and 13, the heat collection pipe 6 is arranged so as to transfer heat to the tank body 40 to which the drainage pipe 3 is connected, and the water storage level maintains the full water level WL. The hot water drainage storage tank 4 having the adjustment mechanism 5 is embedded in the shallow underground SL, and the feed pipe FP, the heat exchanger circulation pump 7, the heat exchanger 8, and the return pipe RP are connected to the heat collection pipe 6, and the return pipe RP is connected. The heat medium circulation circuit CL, which is connected to the heat collection tube 6, is filled with the heat medium fluid AF, and the automatic control unit 9 having the heat exchange unit temperature sensor 90 and the underground temperature sensor 91 is the heat exchanger circulation pump 7. This is a typical embodiment of the hot water waste heat regenerator of the present invention, which is provided so as to control.

As can be clearly understood from each of these figures, in the hot water waste heat regeneration device 1 of the present invention, the shallow heat storage area 2 is secured at an appropriate place in the site ST of the residential HS equipped with the bathroom 30 such as the general residential HS. It is under an area of about 2,200 mm square and is secured in a shallow underground SL of about 2,400 mm underground, and the shallow heat storage area 2 is, for example, the underground bottom of a vertical hole excavated in a rectangular shape. Underground foundation crushed stone and underground foundation concrete with a vertical thickness of about 200 mm are installed in a range of about 1,400 mm in diameter in the center of the building, and vertically placed on the underground foundation concrete in the center of the shallow heat storage area 2. The tubular hot water drainage tank 4 is installed in an independent state, and as shown in FIGS. 3 to 5, the hot water drainage tank 4 has a diameter D1 of about 1,200 mm and a height (depth) H of about 1. It consists of a steel tank body 40 with a capacity of about 1,000 liters to 1,200 liters, with a bottom wall 42 at the lower end and a top wall 43 at the upper end of the 1,700 mm cylindrical tank wall 41. A manhole 44 having a diameter D2 of about 600 mm and a height of about 400 mm is set up in the center of the top wall 43, and is covered with an opening / closing lid 45 with a bolt tightening lock.

The outdoor end of the drainage pipe 3 led out from the bathroom 30 of the residential HS or the like is connected to the vicinity of directly below the top wall 43 of the tank body 40 of the hot water storage tank 4 via a drop basin (not shown). The drainage pipe 3 may be covered with a heat insulating material around the outside of the pipe wall between the bathroom 30 and the tank body 40, and the water storage level adjusting mechanism 5 may be as shown in FIG. A drainage pipe 50 whose outer end is connected to the sewage pipe SW (or septic tank) is penetrated through the tank wall 41 of the full water level WL of the tank body 40 of the hot water storage tank 4, and the inner end of the drainage pipe 50 is formed. The upper end of the drainage vertical pipe 51 is connected so that the lower end reaches the vicinity of the bottom wall 4 in the tank body 40, and the water storage level adjusting mechanism 5 is composed of an overflow drainage pipe line 5.

As shown in FIG. 6, the hot water drainage storage tank 4 is composed of a vertical cylinder type tank body 40 having a bottom wall 42 and a top wall 43, and is located at a position closer to one of the centrifuge directions from the center of the top wall 43. A manhole 44 in which an opening / closing lid 45 is combined is provided, and the manhole 44 is provided horizontally to the tank wall 41 of the tank body 40, which is opposite to one centrifugal direction and is located on the other side. The drainage pipe 50 is penetrated, and the upper end of the drainage vertical pipe 51 whose lower end is hung down to the vicinity of the bottom wall 42 is connected to the inner end arranged near the tank wall 41 in the tank body 40 of the drainage pipe 50. An overflow drainage pipe line 5 composed of the drainage pipe 50 and the drainage vertical pipe 51 is provided, and when the water storage level WL in the tank body 40 reaches the drainage pipe 50, the overflow as the water storage level adjusting mechanism 5 It can be assumed that the water is preferentially overflowed from the stored water W in the vicinity of the bottom wall 42 in the tank body 40 through the drainage pipe line 5.

As shown in FIG. 13, the water storage level adjusting mechanism 5 is located near the bottom wall 42 of the tank body 40 of the hot water storage tank 4, or the full water level WL and the bottom wall sufficiently below the full water level WL of the tank body 40. A water level gauge WG that detects the full water level WL and a water level gauge WG interlocked with the water level gauge WG in the middle part of the drain pipe 50 extending to the outside of the tank body 40 from either the upper or lower halfway between the 42 and the tank body 40. An automatic valve AV having an automatic valve drive / control unit is provided, and when the water storage W amount exceeds the full water level WL, the automatic valve AV is automatically opened and the amount of water stored W exceeding the full water level WL is drained. And can be automatically controlled to maintain a full water level WL, and the automatic valve AV is piped and installed at a position higher than the full water level WL (near the ground GL), not shown. It can be replaced with an automatic drainage pump.

As shown in FIGS. 1 to 4, the hot water storage tank 4 forms a part of the heat transfer circuit CL on the inner and outer peripheral surfaces of the vertically cylindrical tank wall 41, for example, a metal reinforced polyethylene having a diameter of 16 mm. A heat collection tube 6 made of a tube is provided so as to have a minimum curvature diameter of 80 mm, and the heat collection tube 6 has my external heat collection tube 60 at one end from the middle part to the upstream or downstream side, and above the middle part. The other end of the downstream side is the heat collection tube 61 in our tank, and the external heat collection tube 60 forms a vertical spiral so as to join the vertical cylindrical outer peripheral surface of the tank wall 41 in a heat transfer state. As shown in FIGS. 3 and 4, the heat collecting tube 61 in the tank is wound and erected at appropriate intervals around the bottom wall 42 and the top wall 43 around the manhole 44 in the tank body 40. A vertical spiral is formed between the plurality of support frames 62, 62, ... And the tank wall 41, and inside the plurality of support frames 62, 62, ... It is said that the pipes were concentrically connected in a plan view.

As shown in FIG. 7, the heat collection tube 61 in the tank of the heat collection tube 6 goes around below the full water level WL (not shown) between the bottom wall 42 and the top wall 43 around the manhole 44 in the tank body 40. It is possible to make it tightly wound in a triple spiral and heat transfer state around a plurality of support columns (not shown) erected at appropriate intervals. As shown in FIG. 8, the in-tank heat collecting tube 61 of the heat collecting tube 6 can be arranged in the tank main body 40 in a plane spiral shape with appropriate intervals at the top and bottom. As shown in FIG. 9, the tank body 40 itself has a rectangular parallelepiped shape, and a plurality of support plates 62, 62, which are hung in parallel with each other at intervals under the top wall 43 in the tank body 40, It is possible that the heat collecting tube 61 in the tank of the heat collecting tube 6 is attached and fixed in a deformed spiral shape and in a heat transfer state on one or both sides of the heat collecting tube 6.

As shown in FIGS. 1 and 2, the heat exchanger 8 is a snow melter 81, and heat exchange portions (external heat collection tube 60, heat collection tube 61 in the tank) arranged inside and outside the hot water drainage storage tank 4 of the heat collection tube 6 are provided. ) Is conveniently provided so as to have a ratio of 40 m to 75 m or more with respect to the heat exchange portion 80 area of 5 square meters of the heat exchanger 8.

As shown in FIGS. 1, 11 and 13, the inner wall of the shallow heat storage area 2 of the shallow underground SL has a thickness of 100 mm and a height of 100 mm so as to surround the circumference of the hot water storage tank 4 in a rectangular shape. A peripheral heat insulating wall 21 made of Stylofoam (registered trademark) having a depth of 1,700 mm was covered with a water shield sheet 23 having a thickness of 0.5 mm as a water barrier layer 23 between the peripheral heat insulating wall 21 and the inner wall of the shallow underground SL. Peripheral heat insulating walls 21 and 21, which are installed in a state and are assembled in a flat square shape, the bottom surface of the shallow underground SL where the deep underground DP is a trap, and the bottom wall 42 of the hot water storage tank 4. The heat storage material 22 is filled between the underground foundation crushed stone and the underground foundation concrete that support the water storage tank 4 and the tank wall 41 of the tank body 40 of the hot water storage tank 4, and the heat storage material layer 22 is provided and assembled in a flat square shape. Between the upper ends of the surrounding surrounding heat insulating walls 21, 21, ... The top surface heat insulating wall 20 coated with the water shield sheet 23 as the water barrier layer 23, and the thickness of the top of the water shield sheet 23 having a thickness of 0.5 mm as the water shield layer 23 on the top surface heat insulating wall 20. A pavement layer PM composed of a concrete pavement having a diameter of 150 mm and an asphalt pavement having a thickness of 150 mm is laminated so that the manhole 44 of the hot water storage tank 4 is exposed to the ground.

As shown in FIG. 2, in the heat medium circulation circuit CL, the downstream of the heat collection tube 6 is connected to the upstream of the feed tube FP, and the upstream of the heat exchanger circulation pump 7 is connected to the downstream of the feed tube FP. I am connected, the downstream of the circulation pump 7 for the heat exchanger is connected to the upstream of the snow melter 81 as the heat exchanger 8, and the downstream of the snow melter 81 as the heat exchanger 8 is connected to the downstream of the return pipe RP. The upstream is connected to the wa, the downstream of the return tube RP is connected to the upstream of the heat collection tube 6, and the heat medium circulation circuit CL is filled with the antifreeze AF as the heat medium fluid AF. In the heat medium circulation circuit CL, expansion tanks T, air valves A, etc. are arranged at various points, and the intermediate range excluding the heat exchange portion of the heat medium circulation circuit CL is covered with a heat insulating material to improve heat retention. It is desirable to make it.

As shown in FIGS. 1 and 2, the snow melter 81 as the heat exchanger 8 is an iron wire having a diameter of 6 mm above the lower concrete pavement layer provided on the ground surface of the snow melting target section in the site ST such as a residential HS. A metal reinforced polyethylene pipe having a diameter of 16 mm is laid on the iron net so as to have a minimum curvature diameter of 80 mm, and a metal reinforced polyethylene pipe having a diameter of 80 mm is laid within the range of the snow melting target section so as to meander without any distance of 100 mm. An upper concrete pavement layer having a thickness of 30 mm is placed on the concrete pavement layer to form a pavement layer PM, and the upstream inside both ends of the metal-reinforced polyethylene pipe extending from the pavement layer PM exchanges heat with each other. The downstream side of the dexterous circulation pump 7 is connected to the wrinkle, and the downstream side of both ends of the metal reinforced polyethylene pipe is connected to the upstream side of the my return pipe RP.

The automatic control unit 9 is composed of a data logger and an automatic control panel (neither shown), and is installed at an appropriate place in the indoor site ST of the residential HS or the outdoor site ST of the residential HS, and includes a heat exchanger circulation pump 7 and the like. , The headers HH1, ..., HH4 of the feed pipe FP and the return pipe RP are provided in the control box 93, and the automatic control panel of the automatic control unit 9 is provided with snow melting as a heat exchanger 8. The heat exchange unit temperature sensor 90 that detects the temperature of the pavement layer PM directly above the snow melter 81, which is the heat exchange unit 80 of the vessel 81, and the heat storage material layer 22 in the vicinity of the hot water storage tank 3 in the shallow heat storage area 2. An underground temperature sensor 91 that detects the underground temperature is connected to receive each detected temperature information continuously or intermittently.

As shown in FIG. 2, in addition to the above structure, the solar collector S is installed at an appropriate place in the outdoor site ST of the residential HS, and the inside and outside of the tank wall 41 of the tank body 40 of the hot water storage tank 4 The heat supply tube S0 is arranged at at least one of the appropriate places, the upstream side of the heat collector circulation pump S1 is connected to the downstream side of the heat supply tube S0, and the downstream side of the heat collector circulation pump S1 is the sunlight. The upstream of the heat collector S is connected to the downstream side of the solar collector S, and the downstream side of the heat supply tube S0 is connected to the automatic control unit 9, and the solar sensor 92 or the solar heat sensor 92 ( It can be assumed that at least one of the above (not shown) is connected and the automatic control unit 9 controls the heat collector circulation pump S1.

(Action / Effect of Example 1)
As shown in FIGS. 1 to 9, FIG. 11 and FIG. 13, the hot water waste heat regeneration device 1 using the hot water waste heat regeneration device which is the basis of the present invention having the above-described configuration is a vertical cylinder type drainage device. Since the diameter D1 of the hot water storage tank 4 is about 1,200 mm and the height (depth) H is about 1,700 mm, the installation area of the shallow heat storage area 2 is suppressed to about 2,200 mm square. It is possible to secure a capacity of about 1,000 to 1,200 liters of wastewater W, realize more efficient heat storage, and a shallow layer of about 2,400 mm underground at the right place in the ST site of the residential HS. It can be buried and installed in the underground SL, boring to a depth of 50 m to 100 m in the ground, and even a shallow object to a depth of about 24 m, and the underground heat energy of the underground temperature difficult layer is acquired by heat exchange. The construction cost can be significantly reduced as compared with the technology to be used, and the heat storage energy can be used more efficiently.

Then, the automatic control unit 9 receives the detection signals of the heat exchange unit temperature sensor 90 and the underground temperature sensor 91, respectively, and the heat exchange unit temperature of the snow melting device 81 as the heat exchanger 8 is higher than the underground temperature. In this case, the heat exchanger circulation pump 7 is driven to store heat in the hot water storage tank 4 and in the heat storage material layer 22 of the shallow heat storage area 2 in which the hot water storage tank 4 is buried, and the heat exchanger 8 is used. When the heat exchange section temperature of the snow melter 81 is 2 ° C. or lower, the heat exchanger circulation pump 7 is driven to dissipate heat so as to maintain the heat exchange section temperature of the snow melter 81 as the heat exchanger 8 at 1 ° C. or higher. Therefore, when the temperature is rising in summer, etc., the heat absorbed from the snow melting device 81 as the heat exchanger 8 is stored in the shallow heat storage area 2, and snow accumulation or freezing in winter, etc. Under such circumstances, the heat storage energy in the shallow heat storage area 2 is automatically radiated from the snow melting device 81 as the heat exchanger 8, and the effects of snow melting and freezing prevention can be obtained.

The examples shown in FIGS. 10, 12 and 14 show another typical embodiment of the hot water waste heat regeneration device of the present invention provided with the horizontal tubular hot water drainage water storage tank 4. In the hot water storage tank 4, either a cylindrical PVC pipe or a steel pipe having a diameter of 200 mm to 800 mm is horizontally installed, and heat collection pipes 6 are equidistant in the axial direction around the horizontal cylindrical outer wall. It is said that the water storage level adjusting mechanism 5 is connected to the sewage pipe SW through the overflow drain pipe 5 and is manually wound as necessary. It is assumed that the valve 52 can be opened to discharge the entire amount of the stored water W.
The same structural parts as those in FIGS. 1 and 2 shown in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 14, two exhaust hot water heat regeneration devices 1 and 1 are arranged adjacent to each other to form one hot water exhaust heat regeneration device group 1 and 1. A hot water waste heat regeneration system 10 using a hot water waste heat regeneration device 1 in which heat medium circulation circuits CL and CL are shared and connected to each other so as to form a parallel circuit with one heat exchanger circulation pump 7. It is possible to

(Action / Effect of Example 2)
As described above, since the hot water drainage heat regeneration device 1 of the present invention having the configurations shown in FIGS. 10 and 12 has a horizontal tubular hot water drainage water storage tank 4 having a diameter of 200 mm to 800 mm, it can be installed in a residential HS to be installed. It is effective when only a long and narrow section can be secured due to various circumstances of the site ST, and by changing the horizontal length without changing the diameter, the burial depth remains in the shallow underground SL. In addition to making it easier to increase or decrease the water storage capacity, the plane shape is buried in various shapes such as L-shaped, U-shaped, U-shaped, etc. according to the shape of the site ST to be buried. It is possible to make it.

As shown in FIGS. 11, 12 and 15, it is possible that the heat exchanger 8 has been replaced by the heat pump 82 of the air conditioner (indoor unit) 83, which is further shown in FIG. So It can be assumed that it is installed in one residential HS and its site ST in combination with at least one of the hydrothermal snow melting device WS described in the above and the hydrothermal snow melting system using the same.

Schematically showing the water supply heat snow melting device WS of this patent No. 6327648, the heat collecting pipe is wound around the outer peripheral wall of the target water supply pipe in an extrinsic spiral shape so that heat can be transferred, and the snow melting device is embedded under the surface layer of the pavement. Then, the downstream side of the heat collection tube is connected to the upstream side of the circulation pump having an automatic control device equipped with an atmospheric temperature sensor, the downstream side of the circulation pump is connected to the upstream side of the snow melting device, and the upstream side of the snow melting device is connected. A fluid circulation circuit is provided in which the upstream side of the heat collection tube is connected to the downstream side, and the antifreeze liquid as a heat exchange fluid is filled in the fluid circulation circuit, and the circulation pump is activated when the temperature is 2 ° C. or less. When the snow melter melts snow and the atmospheric temperature is 4 ° C or higher, the circulation pump is activated and controlled to store heat in the ground via a heat collection tube.

(Action / Effect of Example 3)
The hot water waste heat regeneration system 10 as shown in FIG. 14 is effective for melting snow in a wider area, can be installed and used remarkably economically, and drains as shown in FIG. According to the hot water heat regeneration system 10, it is possible to utilize the thermal energy of both the water supply and the sewage pipeline SW, which makes it possible to further significantly reduce the emission of carbon dioxide, which is more natural. It will have an extremely large effect and effect of realizing an environment-friendly living space.

(Conclusion)
As described above, the exhaust hot water heat regeneration device of the present invention and the exhaust hot water heat regeneration system using the same can achieve the intended purpose omnipresently by its new configuration, and the installation work is easy. Compared to the conventional snow melting technology, the structure is simplified, the cost is reduced, and it can be installed much more economically. In addition, the use of waste heat eliminates the need for fuel and electricity as a heat source, resulting in a large running cost. In addition to reducing snow melting outdoors, it can also be effectively used as an energy source for indoor air conditioners, water heaters, generators, etc., making it more economical and environmentally friendly for snow melting and energy. It is highly evaluated not only by ordinary households who wish to recycle it, but also by companies that require reduction of high heat costs and carbon dioxide emissions, and it is expected that it will be widely used and spread.

1 Exhaust hot water heat regeneration device
10 Same hot water waste heat regeneration system 2 Shallow heat storage area
20 Same top surface insulation wall
21 Same surrounding insulation wall
22 Same heat storage material layer
23 Same impermeable layer 3 Drainage pipe
30 Same bathroom 4 Hot water drainage tank
40 Main body of the same tank
41 Tank wall
42 Same bottom wall
43 Same sky wall
44 Manhole
45 Same opening / closing lid
D1 Diameter of the tank body
D2 Diameter of the same manhole
H Height of the tank body 5 Water storage level adjustment mechanism (overflow drainage pipe)
50 Same drainage pipe
51 Same drainage vertical pipe
52 Same manual valve
WG same water level gauge
AV same automatic valve W drainage (water storage)
WL Same water level CL Heat medium circulation circuit
AF same heat medium fluid 6 Heat collection tube
60 Circumscribed heat collection tube
61 Heat collection tube in the same tank
62 Same support frame (support plate)
FP feed pipe RP return pipe 7 Circulation pump for heat exchanger 8 Heat exchanger
80 Same heat exchange unit
81 Same snowmelter
82 Same heat pump
83 Air conditioner (water heater or generator)
9 Automatic control unit
90 Same heat exchange unit temperature sensor
91 Underground temperature sensor
92 Same solar sensor (or solar heat sensor)
93 Same control box S Solar collector
S0 Same heat supply pipe
S1 Circulation pump for the same collector WS Water heat snow melting device HS Housing
ST same site
GL same ground
SL same shallow underground
DP same deep underground
SW same sewage pipe
PM Same pavement layer PM

Claims (12)

The tank body, which is either a horizontal cylinder type or a vertical cylinder type, is located in the shallow heat storage area surrounded by the top heat insulation wall and the surrounding heat insulation wall installed in the shallow basement of the residential site equipped with a bathroom. A heat storage material layer capable of transferring and storing the geothermal heat from the deep underground is provided in the shallow heat storage area between the tank body and the top surface heat insulating wall and the surrounding heat insulating wall. On the other hand, the downstream of the drainage pipeline that supplies the hot water from the bathroom of the house is connected, and the upper layer water in the tank body having a large amount of heat storage is left according to the amount of wastewater supplied, and the inside of the tank body having a small amount of heat storage is left. A hot water storage tank with a water storage level adjustment mechanism that maintains the full water level of the tank body while draining the low-rise water to the outside of the tank body with priority, and heat collection arranged so that heat can be transferred to the tank body. The downstream side of the heat tube is connected to the upstream side of the feed pipe, the upstream side of the heat exchanger circulation pump is connected to the downstream side of the feed pipe, and the downstream side of the heat exchanger circulation pump is connected to the upstream side of the heat exchanger. is my connected, upstream of the tube return downstream of the heat exchanger in the ring is my connection, heating medium upstream of the downstream my the Tonetsu pipe of the return pipe is connected crocodile, heat transfer fluid is filled therein It has a circulation circuit, a heat exchange unit temperature sensor that detects the temperature of the heat exchange unit of the heat exchanger, and an underground temperature sensor that detects the underground temperature in the vicinity of the hot water drainage storage tank in the shallow heat storage area. Upon receiving the detection signals of the heat exchanger temperature sensor and the underground temperature sensor, when the heat exchanger temperature of the heat exchanger is higher than the ground temperature, the circulation pump for the heat exchanger is driven to drain hot water. Heat is stored in the heat storage tank and in the heat storage material layer in the shallow heat storage area where the hot water storage tank is buried, and when the temperature of the heat exchange part of the heat exchanger is 2 ° C or less, the circulation pump for the heat exchanger is driven. Controls to dissipate heat so as to maintain the heat exchanger temperature of the heat exchanger at 1 ° C. or higher, and controls to drive the heat exchanger circulation pump when the heat exchanger temperature reaches 20 ° C. or higher. An automatic control unit is provided, and when the temperature rises in summer, etc., the heat absorbed from the heat exchanger is stored in the shallow heat storage area, and there is a risk of snow accumulation or freezing in winter, etc. Below, a hot water exhaust heat regeneration device characterized in that the heat storage energy in the shallow heat storage area is automatically dissipated from the heat exchanger. The outer wall surface of the top panel heat insulating wall and surrounding the heat insulating wall, comprising water barrier layer is coated, waste water heat reproducing apparatus according to claim 1. A heat supply pipe is arranged on at least one of the inside and outside of the hot water storage tank, and the downstream side of the heat supply pipe is connected to the upstream side of the heat collector circulation pump. The downstream side of the solar collector is connected to the upstream side of the solar collector, the downstream side of the solar collector is connected to the downstream side of the heat supply tube, and at least one of the solar sensor and the solar heat sensor is connected. The waste hot water heat regeneration device according to any one of claims 1 or 2 , wherein an automatic control unit having the same controls the circulation pump for the heat collector. The drainage water storage tank is composed of a vertical cylinder type tank body having a bottom wall and a top wall, and a manhole with an opening / closing lid is provided at a position closer to one of the centrifuge directions from the center of the top wall. A drainage pipe horizontal in the wall thickness direction is penetrated through the tank wall of the tank body, which is provided with a manhole and is opposite to the one centrifugal direction and is located on the other side. The upper end of the drainage vertical pipe whose lower end hangs down to the vicinity of the bottom wall is connected to the inner end arranged near the tank wall, and an overflow drainage pipe line consisting of the drainage pipe and the drainage vertical pipe is provided inside the tank body. The drainage according to any one of claims 1 to 3 , wherein when the water storage level reaches the drainage pipe, the water is preferentially overflowed from the water stored near the bottom wall in the tank body through the overflow drainage pipe. Hot water heat regeneration device. A part of the heat collection tube is an external heat collection tube, and the external heat collection tube is placed around the outer circumference of the tank wall of the tank body, which is either a horizontal cylinder type or a vertical cylinder type, in the hot water storage tank. The heat energy from the wastewater stored in the tank body, which is wound spirally around the axis in either the horizontal or vertical direction of the main body, and the geothermal energy from the deep underground, which is stored in the shallow underground. The heat can be transferred to the tank wall of the tank body and the shallow underground so that the heat can be collected. Claim that the inside of the tank wall of the tank body, which is either a horizontal cylinder type or a vertical cylinder type, is installed so that it can be submerged in the stored water in the tank body to exchange heat. Item 4. The waste hot water heat regeneration device according to any one of Items 1 to 4. The hot water exhaust heat regeneration device according to any one of claims 1 to 5, wherein either a part or all of the heat exchanger is replaced with a snowmelter. 6. Hot water heat regenerator. The hot water waste heat regeneration device according to any one of claims 6 or 7 , wherein the heat exchange unit of the snowmelter as a heat exchanger is installed so as to be arranged on the ground directly above the hot water drainage storage tank. The hot water waste heat regeneration device according to any one of claims 6 to 8 , wherein the length of the heat collection tube is set to be 75 m or more with respect to the area of the heat exchange part of the snowmelter of 5 square meters. .. The waste heat heat regeneration device according to any one of claims 1 to 5, wherein either a part or all of the heat exchanger is replaced with at least one of an air conditioner, a water heater, and a generator. A plurality of exhaust hot water heat regenerating devices according to any one of claims 1 to 10 are arranged adjacent to each other to form one exhaust hot water heat regenerating device group, and two or more adjacent hot water exhaust heat regenerating devices in the hot water heat regenerating device group. The waste heat heat regeneration device according to any one of claims 1 to 10 , wherein the heat medium circulation circuits of the regeneration device are shared and connected to each other so as to form a parallel circuit with respect to one heat exchanger circulation pump. Hot water heat regeneration system using. A heat collection pipe is wound around the outer wall of the target water supply pipe in a spiral shape that can transfer heat, and a snow melter is buried under the surface of the pavement. A fluid circulation circuit is provided in which the upstream of the circulation pump having a control device is connected to the upstream of the circulation pump, the downstream of the circulation pump is connected to the upstream of the snow melting device, and the downstream of the snow melting device is connected to the upstream of the heat collection tube. The fluid circulation circuit is filled with an antifreeze liquid as a heat exchange fluid, and the circulation pump is activated when the temperature is 2 ° C or lower, the snow melter melts, and the circulation pump is when the atmospheric temperature is 4 ° C or higher. The same building as the tap water heat snow melting device, which is activated and controlled to store heat in the ground via a heat collection pipe, and the hot water waste heat regeneration device according to any one of claims 1 to 10. A hot water waste heat regeneration system using the hot water waste heat regeneration device according to any one of claims 1 to 10.

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