JPH0542961U - Solar system with bath heat recovery function - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to effectively collect the hot water heat of the hot water of the bathtub in the heat storage tank of the solar system to reduce the fuel cost together with the solar system. [Structure] Outgoing pipe 11 between solar heat collector 2 and heat storage tank 1
In the solar system in which the circulation pipe 3 is provided in the forward pipe 11, the solar heat collector 2 is connected.
The three-way valve 4 is provided in the outflow pipe 11 between the pump 3 and the circulation pump 3, and the lower circulation port 10 and the three-way valve 4 of the heat exchanger 6 attached to the bath 5 are connected to the pipe 14 and the heat attached to the bath 5. The upper circulation port 9 of the exchanger 6 and the heat storage tank 1 were connected by a pipe 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a solar system.

[0002]

[Prior Art]

 In the conventional solar system used in ordinary households, the solar heat collector and the heat storage tank are connected by an outflow pipe and a return pipe provided with a circulation pump, and hot water heated by solar heat is stored in the heat storage tank. The stored hot water is used in a bathtub, kitchen, washroom, etc. together with a boiler. On the other hand, in the bathtub, the hot water after bathing is currently drained as sewage.

[0003]

[Problems to be solved by the device]

 However, the hot water obtained by the solar system is used as hot water for bathtubs and for heating hot water in bathtubs, but the hot water after bathing is often drained and discarded, and the heat is uneconomical.

The present invention has been made in view of the above problems, and an object of the present invention is to effectively collect hot water heat of bathtub hot water in a heat storage tank of a solar system to reduce fuel cost together with a solar system. Is.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for solving the above problems will be described with reference to FIG. 1 corresponding to an embodiment. The present invention provides a forward pipe (between the solar heat collector (2) and the heat storage tank (1)). 11) In a solar system in which a circulation pump (3) is provided in the forward pipe (11), which is connected by a return pipe (12) and a forward pipe (11), the forward flow between the solar heat collector (2) and the circulation pump (3) The pipe (11) is provided with a three-way valve (4), and the lower circulation port (10) of the heat exchanger (6) attached to the bath (5) and the three-way valve (4) are connected to the pipe (14) by a bath. The upper circulation port (9) of the heat exchanger (6) attached to the tank (5) and the heat storage tank (1) are connected by a pipe (13).

[0006]

[Action]

 According to the present invention, in order to store hot water in a heat storage tank by a solar water heater, the water tap (not shown) is opened to supply water to the heat storage tank. Then, the three-way valve is opened in the A-B direction to drive the circulation pump to pump water to the solar water heater. The pumped water is warmed by the heat collector and stored in the upper part of the heat storage tank through the return pipe.The water in the lower part of the heat storage tank is not circulated many times with the circulation pump, the solar water heater and the upper part of the heat storage tank. Hot water is stored in the waste heat storage tank.

On the other hand, in order to use the waste heat of the bathtub in the solar system, first the three-way valve is opened in the A-C direction to drive the circulation pump, and the water in the heat storage tank is installed in the bathtub through the pipe. The heat is exchanged with the hot water in the bathtub inside the heat exchanger and stored in the upper part of the heat storage tank through the pipe. Then, the low-temperature water in the lower part of the heat storage tank is sequentially circulated many times with the circulation pump, the heat exchanger in the bathtub, and the heat storage tank to exchange heat, and the hot water is stored in the heat storage tank. The circulation pump 3 is operated when the temperatures of the temperature sensor (TH) 8 of the solar water heater and the temperature sensor (TH) 8'of the bathtub are higher than the temperature of the temperature sensor (TL) 7 of the heat storage tank.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. Reference numeral 2 denotes a solar heat collector in which a heat collecting part or the like is built in the housing, is installed on a roof or a roof with an inclination, and a temperature sensor 8 is provided above the heat collecting part. Reference numeral 1 denotes a heat storage tank installed at a position lower than the solar heat collector 2 and having a temperature sensor 7 attached to the lower side thereof. The upper part of the heat storage tank 1 and the upper part of the solar heat collector 2 are connected by a return pipe 12, The lower part of the solar heat collector 2 and the lower part of the solar heat collector 2 are connected by a forward pipe 11 provided with a circulation pump 3 on the way. A three-way valve 4 which can be switched between two directions is provided in the outflow pipe 11 between the circulation pump 3 and the solar heat collector 2. Reference numeral 5 denotes a bathtub having a temperature sensor 8'provided therein, and the bathtub 5 is provided with a heat exchanger 6 having an upper circulation port 9 and a lower circulation port 10 for absorbing heat of the bath water and exchanging heat. The upper circulation port 9 and the upper part of the heat storage tank 1 are connected by a pipe 13, and the lower circulation port 10 and the three-way valve 4 are connected by a pipe 14.

In general, in order to store hot water in the heat storage tank 1 using a solar water heater, first, a water tap (not shown) is opened and water is injected into the heat storage tank 1. Then, a controller (not shown) compares the temperature sensor 8 provided in the solar heat collector 2 with the temperature sensor 7 provided in the heat storage tank 1, and the water temperature in the heat collecting section of the solar heat collector 2 is stored in the heat storage tank. When the temperature of the water inside 1 is higher than the heat storage tank 1, the signal from a controller (not shown) opens the three-way valve 4 provided on the outflow pipe 11 in the AB direction to drive the circulation pump 3. Part of the water is sequentially circulated to the outflow pipe 11, the solar heat collector, the return pipe 12, and the heat storage tank 1, and hot water is stored in the heat storage tank 1.

In order to utilize the waste heat of the bathtub 5 in the solar system, a controller (not shown) compares the temperature sensor 8 ′ provided in the bathtub 5 with the temperature sensor 7 provided in the heat storage tank 1. When the water temperature in the bath 5 is higher than the water temperature in the heat storage tank 1, the signal from the controller opens the three-way valve 4 in the directions A to C to drive the circulation pump 3 to remove the water in the heat storage tank 1. It is sent to the heat exchanger 6 provided in the bathtub 5 through the pipe 14, exchanges heat with the hot water in the bathtub 5 in the heat exchanger 6 and is stored in the upper part of the heat storage tank 1 through the pipe 13, The water in the lower part of 1 circulates with the circulation pump 3, the heat exchanger 6 of the bath 5 and the heat storage tank 1, and hot water is stored in the heat storage tank 1.

[0011]

[Effect of the device]

 Therefore, according to the present invention, in a solar system in which a solar heat collector and a heat storage tank are connected by an outflow pipe and a return pipe, and a circulation pump is provided in the outflow pipe, between the solar heat collector and the circulation pump. A three-way valve was provided on the outflow pipe, and the lower circulation port of the heat exchanger attached to the bathtub and the three-way valve were connected by pipes, and the upper circulation port of the heat exchanger attached to the bathtub and the heat storage tank were connected by pipes. Because of the configuration, it is possible to effectively collect the hot water heat of the hot water of the bathtub in the heat storage tank of the solar system and reduce the fuel cost together with the solar system.

[Brief description of drawings]

FIG. 1 is a piping system diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1. Heat storage tank 2. Solar collector 3. Circulation pump 4. Three-way valve 5. Bathtub 6. Heat exchanger 7. Temperature sensor 8. Temperature sensor 8 '. Temperature sensor 9. Upper circulation port 10. Lower circulation port 11. Outgoing pipe 12. Return pipe 13. Piping 14. Piping

Claims (1)

[Scope of utility model registration request] 1. A solar system in which a solar heat collector and a heat storage tank are connected by an outflow pipe and a return pipe, and a circulation pump is provided in the outflow pipe, in which the solar heat collector and the circulation pump are connected to each other. The pipe was equipped with a three-way valve, the lower circulation port of the heat exchanger attached to the bathtub and the three-way valve were connected by pipes, and the upper circulation port of the heat exchanger attached to the bathtub and the heat storage tank were connected by pipes. A characteristic solar system with a bathtub waste heat recovery function.