JPH0643618Y2 - Heat storage type hot water supply system and heating system using midnight power - Google Patents

Description

[Detailed description of the device] "Industrial application field" This device uses late-night power to store electric heat energy in a heat storage device, collects this heat energy at any time, and introduces it to a heat exchanger for hot water supply. The present invention relates to a hot water supply and heating device for supplying heated hot water for tap water or heating.

"Problems to be solved by conventional techniques and ideas" Conventionally, as a system that uses inexpensive late-night power for heating houses, floor-standing heaters that store electric heat energy in magnesite bricks, etc. or soil concrete Floor heating devices that store heat are known, but since the weight of the heat storage material is large, there are load restrictions for heating wooden houses, and switching between starting and stopping heating is slow, and temperature control is difficult. There was a problem such as being.

In the past, a hot water storage type electric water heater that heats the water in the tank with an electric heater is known as a water heater that uses late-night power, but the tank internal pressure is A pressure reducing valve is installed on the water supply side so that the pressure is less than 1 kg / cm ² .

Therefore, this electric water heater has a drawback that the hot water supply pressure is low, and the hot water supply pressure to high places is insufficient and the hot water cannot be used satisfactorily.

On the other hand, an instantaneous water heater that heats water at any time is used as a water heater having a high hot water supply pressure, but since gas is generally used as fuel, there is a drawback that the running cost is high.

[Means for Solving the Problems] In order to solve the above-mentioned conventional problems, the present invention relates to a large number of heat accumulators 3 in which water is enclosed in a hollow container, an electric heater 4 for heating these with midnight power, and A high temperature heat storage device 1 in which a heat collecting heat pipe 5 for collecting heat of the heat storage device 3 to the outside is installed in a heat storage tank 2, and water supplied from a water supply pipe 10 is heated by a heat exchange heat pipe 9. The heat exchanger 8 for supplying hot water to the hot water supply pipe 11 and the presence or absence of water flow in the flow path from the water supply pipe 10 to the hot water supply pipe 11 are detected by the flow detector 27, and the heat exchange heat from the heat collecting heat pipe 5 is detected when the water flow is detected. A heat transfer opening / closing device 6 that operates to transfer heat to the pipe 9 and that blocks heat transfer from the heat collecting heat pipe 5 to the heat exchanging heat pipe 9 when no water flow is detected, and a hot water supply pipe 11 Detects the water temperature inside and uses it as the temperature difference between the detected water temperature and the set water temperature. A midnight electric power storage type hot water supply device comprising a heat transfer amount control device 7 for adjusting the amount of heat transfer to the heat exchanger heat pipe 9 in accordance therewith, and heaters 29, 30 for introducing the heat medium of the hot water supply pipe 11 of this device. The present invention proposes a late-night electric power storage type hot water supply device equipped with.

"Operation" A heat storage tank 2 having a large number of heat storage units 3 in which water is enclosed in a hollow container is heated and stored by an electric heater 4 using midnight power, and this heat storage energy is collected by a heat collecting heat pipe 5 at any time during hot water supply. By collecting and heating the hot-water supply heat exchanger 8 while adjusting the temperature, the late-night electric power, which has a low electricity rate, is used to store heat in a small and efficient high-temperature heat storage device, and this stored energy is supplied to the hot water as needed. While using it for heating to obtain high hot water supply pressure, use the hot water as a heater or tap water to reduce running costs for heating and hot water supply.

The heat transfer switchgear 6 is opened and closed by a flow detector 27 that detects the flow of hot water to the hot water supply pipe 11, and when the flow of hot water is detected during hot water supply or when using a heater, the heat collection heat pipe 5
From the heat collection heat pipe 5 to the heat exchange heat pipe 9 when the stop of the hot water flow is detected when the hot water supply is stopped or when the heater is not used. Automatically.

The heat transfer amount control device 7 adjusts the heat retention amount of the heat exchange heat pipe 9 according to the set temperature required for hot water supply and heating, and controls the hot water supply temperature.

"Embodiment" An embodiment of the present invention shown in the drawings will be described below.
The heat storage device 1 has a heat-insulating heat storage tank 2 in which a large number of heat storage devices 3 each having a heat-resistant hollow container such as a heat-resistant glass or metal having a cylindrical or spherical shape in which water is enclosed are loaded. An electric heater 4 that heats the surroundings at midnight
Further, one or a plurality of heat collecting heat pipes 5 for collecting the heat stored in the regenerator 3 by the heating of the electric heater 4 into a heat medium such as water or steam flowing in the inside are provided.

The heat medium of the heat collecting heat pipe 5 or its heat is transferred to the heat exchange heat pipe 9 of the hot water supply heat exchanger 8 via the heat transfer opening / closing device 6 and the heat transfer amount control device 7, and thereby the water supply pipe 10
The water flowing into the heat exchanger 8 is heated, and the hot water heated to a constant temperature is pumped by the hot water supply pipe 11 at a high pressure.

The heat collection heat pipe 5 and the heat exchange heat pipe 9 are the second
As shown in the figure, a single pipe type in which the heat medium does not circulate or a circulation line type in which the heat medium circulates between the two via a return pipe 12 as shown in FIG.

The heat transfer switchgear 6 has a fourth section when the heat collection heat pipe 5 and the heat exchange heat pipe 9 are of a single pipe type as shown in FIG.
A structure as shown in the figure can be adopted.

That is, in FIG. 4, both ends of the heat collecting heat pipe 5 and the heat exchanging heat pipe 9 are opposed to each other, and the heat conductors 13 and 13 'made of a good heat conductor such as metal are attached to these opposed ends so as to be separated by a predetermined distance. , A block-shaped heat transfer opening and closing made of a good heat conductor having arcuate end faces contacting these arcuate surfaces between arcuate recesses 14 and 14 'provided on opposite surfaces of both heat conductors 13 and 13' The body 15 is rotatably installed.
By rotating 15 so as to contact the recesses 14 and 14 'of the heat conductors 13 and 13', the heat of the heat collecting heat pipe 5 is transferred to the heat exchange heat pipe 9, and the heat transfer opening / closing body 15 is recessed. 14,1
By rotating the motor 16 (see FIG. 1) away from 4 ', the heat collection heat pipe 5 and the heat exchange heat pipe 9 are isolated from each other and the heat transfer is cut off.

On the other hand, when the heat collecting heat pipe 5 and the heat exchanging heat pipe 9 are of the circulation line type shown in FIG. 3, the heat transfer switchgear 6 has a structure as shown in FIG. be able to.

That is, in FIG. 5, the valve body 17 is provided between the heat medium sending side of the heat collecting heat pipe 5 and the heat medium receiving side of the heat exchange heat pipe 9.
Is provided, the inflow passage 18 communicating with the heat medium delivery side of the heat collection heat pipe 5 provided therein, and the heat exchange heat pipe 9
A conical cavity-shaped valve hole 19 is provided between it and an outflow passage 18 'communicating with the heat medium receiving side of the conical valve body 21. The conical valve body 21 is attached to the tip of the advancing / retreating shaft 20 in the valve hole 19. The forward / backward operation gear 23 is screwed into the screw portion provided at the rear end of the forward / backward shaft 20 that is fitted in the forward / backward direction and protrudes to the outside of the forward / backward guide portion 22 behind the valve body 21. Rotate forward and backward by 25 to move the valve body 21 forward and backward, open and close the valve hole 19, and open the inflow path.
The heat medium is configured to flow or be blocked between the 18 and the outflow passage 18 '.

The periphery of the advancing / retreating shaft 20 is sealed with a bellows 26 provided in the advancing / retreating guide portion 22.

As the heat transfer amount control device 7, an on-off valve mechanism similar to that shown in FIG. 5 can be adopted, and the motor 24 'is rotated in the forward and reverse directions to adjust the throttle amount of the valve hole 19 by advancing and retracting the valve body 21. Thus, the inflow amount of the heat medium from the inflow passage 18 to the outflow passage 18 ', that is, the heat retention amount of the heat exchange heat pipe 9 is adjusted, and the hot water supply temperature is controlled.

The heat transfer switchgear 6 is opened and closed by a flow detector 27 that detects the flow of hot water to the hot water supply pipe 11. When the flow is detected during hot water supply, a signal is sent to the motor 16 to send and release heat.
Rotate 15 so as to come into contact with the recesses 14 and 14 'of the heat conductors 13 and 13', or send a signal to the motor 24 to retract the valve body 21, open the valve hole 19, and flow out to the inflow passage 18 By passing a heat medium between the passages 18 ', heat is transferred from the heat collecting heat pipe 5 to the heat exchange heat pipe 9, and when the stop of the hot water flow is detected when the hot water supply is stopped, Heat exchange heat pipe 5 to heat exchange heat pipe 9 by reverse operation
It is configured to be electrically automatically operated to block heat transfer to.

Further, the heat transfer amount control device 7 operates the motor 24 'in response to the difference between the set temperature and the detected temperature by the temperature detector 28 that detects the temperature of the hot water to the hot water supply pipe 11 to bring the hot water supply temperature to the set temperature. It is configured to be electronically controlled to maintain.

In addition, the heat transfer switchgear 6 and the heat transfer amount control device 7 have
The single valve mechanism shown in the figure may be shared.

In this way, the heat of the electric heater 4 heated by the economical midnight power is supplied to the high temperature heat storage device 3 in the heat storage device 1 by 200
The heat is stored at a high temperature of about ℃, and this high-temperature heat storage energy is taken out as hot water or steam at any time through the heat collection heat pipe 5 and the heat exchange heat pipe 9 to be economically efficient as a heat source for the hot water supply heat exchanger. Frequently used, this hot water is used alone or in combination as tap water for an instant water heater or as a panel floor heater 29 and various radiators 30.

By the way, when comparing the electricity charge of the system of this invention and the conventional system in the metered lighting of general households, the basic charge is about twice as much as the case of using the conventional daytime electricity and using the late-night electricity of this invention. Is about 3 times.

For city gas, if the efficiency of the water heater is 75%, 10
The energy charge per 00kcal is about 13 yen, and in the case of using the midnight power for business of this invention, if the total heat loss of the heat storage device 1 and the heat exchanger is 15%, the energy charge per 1000kcal is about 11 yen. Therefore, the running cost can be reduced as compared with city gas.

"Effect of the device" As described above, according to the device, the heat storage tank equipped with a large number of heat storage devices in which water is enclosed in a hollow container is heated and stored by a heat transfer heater using late-night power, and this stored energy is stored. Heat is taken from the heat collecting heat pipe via the heat transfer switch at any time during hot water supply, and the heat exchanger for hot water supply as an instantaneous water heater is heated while the temperature is controlled by the heat transfer amount control device, so midnight power with low power charges is generated. It is used to store heat in a compact, lightweight, and efficient high-temperature heat storage device, and this stored heat energy is used to heat the hot water as needed for high-pressure use in one or more applications such as an instantaneous water heater or a lightweight water heater. It is possible to supply hot water to a place or the like as hot water at a constant temperature and reduce running costs such as tap water and hot water supply and heating.

Also, when the flow detector that detects the flow of hot water to the hot water supply pipe opens and closes the heat transfer switch, and when the flow of hot water is detected during hot water supply or when using the heater, the heat collection heat pipe transfers heat. When the stop of the flow of hot water is detected when the hot water supply is stopped or when the heater is not used, the use of the hot water supply or the heating device to cut off the heat transfer from the heat collecting heat pipe to the heat exchange heat pipe, It can be operated automatically when not in use.

Further, the heat transfer amount control device can control the hot water supply temperature by adjusting the heat retention amount of the heat exchange heat pipe according to the set temperature required for hot water supply or heating.

Further, for heating, the heating is immediately started and stopped, and the temperature can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, and FIGS. 2 and 3 are longitudinal sectional views showing an outline of piping states in which the heat collecting heat pipe and the heat exchanging heat pipe of the present invention are different. 4 is a vertical sectional front view showing an example of a heat transfer switchgear according to the present invention, and FIG. 5 is a vertical sectional front view showing another heat transfer switchgear and a heat transfer amount control device according to the present invention. 1 ... Heat storage device, 2 ... Adiabatic heat storage tank, 3 ... Heat storage device, 4
...... Electric heater, 5 ...... Heat collection heat pipe, 6 ...... Heat transfer switchgear, 7 ...... Heat transfer amount control device, 8 ...... Hot water supply heat exchanger, 9 ...... Heat exchange heat pipe, 10 ...... Water supply Tube, 11 ...
… Hot water supply pipe, 12 …… Return pipe, 13,13 ′ …… Heat conductor, 14,14 ′ …… Concave, 15 …… Heat transfer switch, 16 …… Motor, 17 …… Valve body, 18 …… Inflow path, 18 '... Outflow path, 19 ... Valve hole, 20 ... Forward / backward shaft, 21 ... Valve body, 22 ... Forward / backward guide part, 23 ... Forward / backward operating gear, 24, 24' ... Motor, 2
5 …… Drive gear, 26 …… Bellows, 27 …… Flow detector, 28 …… Temperature detector, 29 …… Panel floor heater, 30 …… Radiator.

Claims (2)

[Scope of utility model registration request] 1. A large number of heat accumulators in which water is enclosed in a hollow container, an electric heater for heating these with midnight power, and a heat collecting heat pipe for extracting heat from the heat accumulator to the outside in a heat accumulator tank. A high-temperature heat storage device installed, a hot water heat exchanger that heats the water supplied from the water supply pipe with a heat exchange heat pipe and sends it to the hot water supply pipe, and a flow of water in the flow path from the water supply pipe to the hot water supply pipe. Detected by a detector, when the water flow is detected, it operates so as to transfer heat from the heat collection heat pipe to the heat exchange heat pipe, and when no water flow is detected, from the heat collection heat pipe to the heat exchange heat pipe. The heat transfer switch operating to cut off the heat transfer of the heat exchanger and the water temperature in the hot water supply pipe are detected, and the heat transfer amount to the heat pipe for the heat exchanger is adjusted according to the temperature difference between the detected water temperature and the set water temperature. Heat transfer amount control device Midnight power thermal storage type hot water supply apparatus characterized by comprising. 2. A large number of heat accumulators in which water is enclosed in a hollow container, an electric heater for heating these with midnight power, and a heat-collecting heat pipe for extracting heat from the heat accumulator to the outside in a heat accumulator tank. A high-temperature heat storage device installed, a hot water heat exchanger that heats the water supplied from the water supply pipe with a heat exchange heat pipe and sends it to the hot water supply pipe, and a flow of water in the flow path from the water supply pipe to the hot water supply pipe. Detected by a detector, when the water flow is detected, it operates so as to transfer heat from the heat collection heat pipe to the heat exchange heat pipe, and when no water flow is detected, from the heat collection heat pipe to the heat exchange heat pipe. The heat transfer switch operating to cut off the heat transfer of the heat exchanger and the water temperature in the hot water supply pipe are detected, and the heat transfer amount to the heat pipe for the heat exchanger is adjusted according to the temperature difference between the detected water temperature and the set water temperature. A heat transfer amount control device, Midnight power thermal storage type hot water supply apparatus characterized by comprising a heater for introducing a heating medium of the serial supply pipe.