JPH11351590A - Warm water type heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm water type heating apparatus capable of producing preferable temperature warm water to a heat dissipation apparatus with a simplified construction, even when warm water is supplied to the heat dissipation apparatus using a heat source apparatus producing high temperature water, which dissipation apparatus uses low temperature water such as a floor heating panel. SOLUTION: A warm water type heating apparatus 1 includes a floor heating panel 2 for receiving supply of warm water heated by a heat source apparatus 3 to effect heating action, and a warm water piping for connecting the heat source apparatus 3 and the floor heating panel 2. There is further provided a heat exchange apparatus 16 for exchanging heat between warm water flowing through a warm water piping serving to supply warm water to the floor heating panel 2 and warm water flowing through a warm water piping serving to feed back warm water from the floor heating panel 2 to the heat source apparatus 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water type heating apparatus for circulating hot water through a hot air heater or a floor heating panel for heating.

[0002]

2. Description of the Related Art Conventionally, a hot water heating type heating device heats and generates hot water with a heat source device equipped with an oil burner or a gas burner, and distributes and circulates the hot water to a hot air heater or a floor heating panel. By doing so, it is configured to heat the room. Further, in order to obtain a required heating capacity in the hot air heater or the like, high-temperature water of, for example, about + 80 ° C. is required. Therefore, high-temperature water that satisfies this is generated in the heat source device.

However, hot water suitable for the floor heating panel or the like is low-temperature water of about + 60 ° C. If the high-temperature water is directly supplied from the heat source device to the floor heating panel,
There was a risk of discomfort to the user and damage to the flooring of the house.

[0004]

Therefore, conventionally, as shown in FIG. 6, a flow rate variable valve 103 is interposed in a hot water pipe 102 for supplying hot water to a floor heating panel 101, and flows into the floor heating panel 101. An operation to reduce the flow rate of hot water was performed. According to such a method, since the amount of heat flowing into the floor heating panel 101 decreases, the average hot water temperature in the floor heating panel 101 decreases, but the temperature of the hot water flowing into the floor heating panel 101 is still high. The temperature in the inlet section does not drop, and the above disadvantages in this section are not solved at all.
Conversely, the temperature difference between the outlet portion and the outlet portion increases, resulting in discomfort to the user.

[0005] For example, Japanese Patent Application Laid-Open No. 1-277137 discloses a high-temperature water circuit for circulating a heat source device, and a low-temperature water circuit for circulating hot water whose temperature is reduced by radiating heat in the high-temperature water circuit without passing through the heat source device. There is also a method of flowing the low-temperature water of the low-temperature water circuit to the floor heating panel.However, since the hot-water temperature of the low-temperature water circuit inevitably depends on the load state of the high-temperature water circuit, a plurality of There has been a problem that the temperature of the hot water in the low-temperature water circuit must be managed using a sensor and a complicated control device.

The present invention has been made to solve the above-mentioned conventional technical problem, and supplies hot water to a radiator using low-temperature water such as a floor heating panel using a heat source device that generates high-temperature water. Also in this case, the present invention provides a hot water type heating device that can generate hot water having a temperature suitable for the heat radiation device with a simple configuration.

[0007]

SUMMARY OF THE INVENTION A hot water type heating apparatus according to the present invention comprises a heat radiating device for performing a heating operation by receiving a supply of hot water heated by a heat source device, and a hot water pipe connecting the heat source device and the heat radiating device. And a heat exchange device for exchanging heat between hot water flowing through a hot water pipe that supplies hot water from the heat source device to the heat radiating device and hot water flowing through the hot water piping that returns hot water from the heat radiating device to the heat source device. It is a thing.

According to the present invention, there is provided a hot water type heating apparatus including a heat radiating device that receives a supply of hot water heated by a heat source device to perform a heating operation, and a hot water pipe connecting the heat source device and the heat radiating device. Since a heat exchange device for exchanging heat between hot water flowing through a hot water pipe that supplies hot water from the heat source device to the heat radiating device and hot water flowing through the hot water piping that returns hot water from the heat radiating device to the heat source device is provided, in this heat exchange device, In addition, the temperature of the hot water supplied to the heat radiator can be reduced by the hot water having a low temperature after the heat is radiated by the heat radiator.

Thus, even when high-temperature water is generated by heating in the heat source device and this hot water is used for a radiator suitable for low-temperature water such as a floor heating panel, the hot water entering the radiator is effectively cooled to a low temperature. With water, it is possible to prevent user's discomfort particularly at the entrance and damage to peripheral members beforehand.

[0010] The hot water heating apparatus according to the second aspect of the present invention is provided with a valve device for adjusting the flow rate of the hot water flowing in the hot water pipe.

According to the second aspect of the present invention, in addition to the above, a valve device for adjusting the flow rate of the hot water flowing in the hot water pipe is provided, so that the valve device allows the flow rate of the hot water flowing from the heat source device to the radiating device. Can be changed. Therefore,
For example, if the flow rate of hot water flowing into the radiator is reduced by a valve device, the radiating time of the hot water in the radiator is extended,
The temperature of the hot water returning to the hot water pipe further decreases. This makes it possible to further reduce the temperature of the hot water from the heat source device in the heat exchange device. Further, the temperature of the hot water flowing into the heat radiating device can be increased by performing the reverse operation. That is, it is possible to control the temperature of the hot water flowing into the heat radiating device by using the valve device.

A third aspect of the present invention provides a hot water heating apparatus which controls the valve device based on the temperature of the hot water pipe.

According to the third aspect of the present invention, in addition to the above, the valve device is controlled based on the temperature of the hot water pipe, so that the temperature of the hot water flowing into the heat radiator according to the load condition in the heat radiator. Can be automatically controlled to a desired value, so that comfort and operability can be improved.

According to a fourth aspect of the present invention, there is provided a hot water type heating apparatus comprising a hot water valve interposed in the hot water pipe according to the first aspect, and the hot water valve is adapted to flow the hot water in accordance with the temperature of the hot water flowing inside. Is to adjust.

According to the fourth aspect of the present invention, in addition to the first aspect, a hot water valve is provided in the hot water pipe, and the hot water valve controls the flow rate of the hot water according to the temperature of the hot water flowing inside. With this configuration, it is possible to automatically control the temperature of the hot water flowing into the heat radiator to a desired value according to the load condition in the heat radiator. In addition, since an electric control device is not required, the structure can be simplified in addition to the improvement of comfort and operability.

According to a fifth aspect of the present invention, there is provided a hot water heating apparatus according to the first aspect, wherein the hot water pipe is provided with a bypass circuit for bypassing a heat exchange section of the heat exchanger, and a flow rate of the hot water flowing through the bypass circuit is adjusted. A valve device for performing the operation is provided.

According to the fifth aspect of the present invention, in addition to the first aspect, the hot water pipe further includes a bypass circuit for bypassing a heat exchange section of the heat exchanger, and a flow path for adjusting the flow rate of the hot water flowing through the bypass circuit. Since the valve device is provided, the bypass circuit bypasses the heat exchange unit of the heat exchange device and allows the hot water from the heat source device to flow directly into the heat radiation device, and the flow rate of the hot water can be adjusted by the valve device. .

Thus, for example, when the temperature of the hot water flowing into the radiator is too low, the temperature can be raised quickly by increasing the flow rate of the hot water from the bypass circuit. The temperature of the hot water flowing into the heat radiator can also be rapidly reduced. That is, the temperature of the hot water flowing into the radiator can be quickly and accurately controlled using the bypass circuit and the valve device.

According to a sixth aspect of the present invention, in the hot water heating apparatus according to the first aspect, the hot water pipe is provided with a bypass circuit and a heat valve that bypasses a heat exchange section of the heat exchanger. The flow rate of the hot water flowing through the bypass circuit is adjusted according to the temperature of the hot water flowing through the bypass circuit.

According to the sixth aspect of the present invention, in addition to the first aspect, the hot water pipe is provided with a bypass circuit and a heat valve that bypasses the heat exchange section of the heat exchanger, and the heat valve moves inside the hot water pipe. Since the flow rate of hot water flowing through the bypass circuit is adjusted according to the temperature of the hot water, the bypass circuit bypasses the heat exchange section of the heat exchange device, allowing the hot water from the heat source device to flow directly into the radiator, The valve allows the flow rate of this hot water to be adjusted.

Accordingly, when the temperature of the hot water flowing into the radiator is too low, the temperature of the hot water can be increased quickly by increasing the flow rate of the hot water from the bypass circuit. Accordingly, the temperature of the hot water flowing into the heat radiating device can be rapidly reduced. That is, it is possible to quickly and accurately automatically control the temperature of the hot water flowing into the radiator using the bypass circuit and the thermal valve. In addition, since an electric control device is not required, the structure can be simplified in addition to the improvement of comfort and operability.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a hot water type heating apparatus 1 to which the present invention is applied, and FIG. 2 is a piping configuration diagram for a floor heating panel 2.

In FIG. 1, reference numeral 3 denotes a heat source device installed outdoors, for example, 2 a floor heating panel as a heat radiator installed indoors, and 4 a fan convector as a heat radiator also installed indoors. The heat source device 3 includes a well-known structure including a circulation pump (not shown), a heat source side heat exchanger, and an oil burner or a gas burner for heating the heat source side heat exchanger.
It is set to ° C.

An outlet header 6 and an inlet header 7 are connected to the heat source side heat exchanger.
And 7, the fan control vector 4 and the floor heating panel 2 are detachably connected via hot water outlets 8, 9 and 11, 12.

The hot water outlets 8, 9, 11,
12 is installed on the wall surface in the room. The fan control vector 4 has the above-mentioned +8 from the header 6 of the heat source device 3.
After high-temperature water of 0 ° C. is supplied and heat is radiated by the internal heat exchanger, the flow returns to the header 7. A blower is mounted in the fan control vector 4 and blows the heat to the heat exchanger by the blower, thereby blowing out warm air from an outlet 4A.

On the other hand, the floor heating panel 2 and the hot water outlet 1
A heat exchange device 16 of the present invention is interposed between 1 and 12.
In this case, the heat exchange device 16 includes a hot water pipe 17 having a heat source side inlet 17A at an end, a hot water pipe 18 having a heat source side outlet 18A, and a hot water pipe 19 having a load side outlet 19A.
, A hot water pipe 21 having a load-side inlet 21A, a heat exchange tank (heat exchange section) 22, a bypass circuit 23, an electric three-way valve (valve device) 24, a thermistor 26, and the like.

The heat source side inlet 17A is connected to the hot water outlet 11, and the heat source side outlet 18A is connected to the hot water outlet 12.
The load-side outlet 19A is detachably connected to the inlet end 27A of the hot water pipe 27 of the floor heating panel 2, and the load-side inlet 21A is detachably connected to the outlet end 27B of the hot water pipe 27. You. The hot water pipe 27
Are arranged in a meandering manner over substantially the entire surface of the floor heating panel 2.

Next, the structure inside the heat exchanger 16 will be described in detail. The hot water pipe 17 enters the heat exchange tank 22,
After passing through the inside spirally, it exits the heat exchange tank 22 and is connected to one inlet of the electric three-way valve 24. One end of the bypass circuit 23 is connected to the hot water pipe 17 before entering the heat exchange tank 22, and the other end is connected to the other inlet of the electric three-way valve 24.

The hot water pipe 1 is connected to the outlet of the electric three-way valve 24.
Thermistor 26 is connected to the hot water pipe 19 in a heat-exchange manner. The hot water pipe 18 is connected to one end of a heat exchange tank 22 and is connected to the hot water pipe 21.
Is connected to the other end (opposite side) of the heat exchange tank 22.

The operation of the above-described heat exchange device 16 will be described. From the header 6 of the heat source device 3, high-temperature water of + 80 ° C. flows into the hot water pipe 17 via the hot water outlet 11. The high-temperature water flowing into the hot water pipe 17 passes through the heat exchange tank 22 and then passes through the electric three-way valve 24 to the hot water pipe 1.
9, flows into the hot water pipe 27 of the floor heating panel 2 from the inlet end 27A via the hot water pipe 19.

The hot water flowing into the hot water pipe 27 circulates through the floor heating panel 2 to radiate heat, thereby exhibiting a heating effect. Then, the hot water pipe 2 of the heat exchanger 16 exits from the outlet end 27B.
1 and flows into the heat exchange tank 22 through the hot water pipe 21. Then, the hot water pipe 17 is placed in the heat exchange tank 22.
After the heat exchange with the hot water pipe 1
8, circulation is performed to return to the header 7 of the heat source device 3.

A portion of the high-temperature water flowing into the hot water pipe 17 flows into the bypass circuit 23 and bypasses the heat exchange tank 22 to reach the electric three-way valve 24 directly.
Merge with warm water from. The electric three-way valve 24 is a hot water pipe 17
The operation of adjusting the flow rate of the hot water from the bypass circuit 23 and the flow rate of the hot water from the bypass circuit 23 is performed.

Here, the hot water pipe 21 is connected to the heat exchange tank 2
The warm water entering the inside 2 is low-temperature water (for example, about + 50 ° C.) having a low temperature after radiating heat in the floor heating panel 2. Therefore, the high-temperature water flowing through the hot water pipe 17 is supplied to the heat exchange tank 2.
In the process of passing through the inside 2, heat exchange occurs with this low-temperature water, and after the temperature has dropped, it becomes low-temperature water and reaches the electric three-way valve 24.

Then, a control device (not shown) built in the heat exchange device 16 adjusts the temperature of the hot water entering the inlet end 27A to, for example, + 60 ° C. based on the output of the thermistor 26.
The electric three-way valve 24 is controlled so that low-temperature water (set temperature) is obtained. That is, when the temperature detected by the thermistor 26 is higher than the set temperature, the flow rate of the low-temperature water from the hot water pipe 17 is reduced, and the inflow of the high-temperature water from the bypass circuit 23 is eliminated.

When the flow rate of the hot water flowing into the hot water pipe 27 of the floor heating panel 2 is reduced by the electric three-way valve 24, the heat radiation time of the hot water in the floor heating panel 2 is extended.
The temperature of the low-temperature water returning from the hot-water pipe 21 to the heat exchange tank 22 decreases, and the temperature of the hot water that enters the hot-water pipe 27 of the floor heating panel 2 after heat exchange with the low-temperature water also decreases.

When the temperature detected by the thermistor 26 becomes lower than the set temperature due to the use condition, the controller increases the flow rate of the hot water from the hot water pipe 17. As a result, the flow rate of the hot water flowing into the hot water pipe 27 of the floor heating panel 2 is increased, so that the heat radiation time is shortened, and the temperature of the hot water returning from the hot water pipe 21 to the heat exchange tank 22 is also increased. Hot water pipe 2 for floor heating panel 2
The temperature of the warm water entering 7 also rises.

Further, in a situation where the temperature becomes lower than the set temperature even when the flow rate of the hot water from the hot water pipe 17 is increased, the control device causes the electric three-way valve 24 to flow high-temperature water from the bypass circuit 23 to increase the flow rate. Thereby, the hot water piping 1
Since the high-temperature water bypassing the heat exchange tank 22 directly flows into 9, the temperature of the hot water flowing into the hot water pipe 27 of the floor heating panel 2 can be quickly increased.

Thus, the temperature of the hot water flowing into the floor heating panel 2 is quickly and accurately automatically controlled using the bypass circuit 23 and the electric three-way valve 24, and the hot water entering the floor heating panel 2 is effectively converted to low-temperature water. Thus, it is possible to prevent the user from feeling uncomfortable or damage to the floor material of the house at the floor heating panel 2 near the entrance end 27A. Further, since the temperature of the hot water entering the floor heating panel 2 is automatically controlled, comfort and operability are also improved.

In the above-described embodiment, the hot water flowing into the floor heating panel 2 is controlled to the set temperature by the control device using the electric three-way valve 24 and the thermistor 26. A heat operated valve (three-way valve) may be attached. The thermo-wax valve expands and expands according to the temperature of the fluid (in this case, hot water) flowing inside.
A cylinder having a built-in wax that exhibits a shrinking action is provided, and the operation of this cylinder adjusts the flow rates of the hot water from the hot water pipe 17 and the hot water from the bypass circuit 23 to the hot water pipe 27 of the floor heating panel 2. The temperature of the incoming hot water is maintained at the set temperature. In this case, since the electric control device and the thermistor as described above are not required, the structure can be simplified. Further, a manual three-way valve may be attached at the position of the electric three-way valve 24.

Further, a motor-operated valve (two-way valve) 31 may be mounted at the position of the motor-operated three-way valve 24 as shown in FIG. In this case, based on the temperature detected by the thermistor 26, the controller adjusts the opening of the motor-operated valve 31 to adjust the flow rate of the hot water from the hot water pipe 17, and as described above, the hot water flowing into the floor heating panel 2 Is automatically controlled to the set temperature. In this case, the electric valve 31 can be replaced with a thermal valve (two-way valve) such as a thermo-wax valve as described above.

Further, the motor-operated valve 31 of FIG. 3 is replaced with a manual on-off valve 32 as shown in FIG. 4, and the flow rate of hot water flowing into the floor heating panel 2 is adjusted by opening and closing the on-off valve 32.
The temperature may be adjusted. Furthermore, by appropriately setting the heat exchange amount in the heat exchange tank 22, the on-off valve can be omitted as shown in FIG. Also in this case, the hot water flowing into the hot water pipe 27 of the floor heating panel 2 is supplied to the hot water pipe 2 in the heat exchange tank 22 of the heat exchange device 16.
Since the low-temperature water is heat-exchanged with the low-temperature water returned from 1, the discomfort of the user and the damage to the floor material can be avoided.

[0042]

As described above in detail, according to the present invention, a heat radiating device which performs a heating action by receiving a supply of hot water heated by a heat source device, and a hot water pipe connecting the heat source device and the heat radiating device are provided. In the hot water type heating device provided, a heat exchange device for exchanging heat between hot water flowing through a hot water pipe that supplies hot water from the heat source device to the heat radiating device and hot water flowing through the hot water piping that returns hot water from the heat radiating device to the heat source device is provided. Therefore, in this heat exchange device, the temperature of the hot water supplied to the heat radiator can be reduced by the hot water having a low temperature after the heat is radiated by the heat radiator.

As a result, the high-temperature water is heated and generated by the heat source device, and even when the low-temperature water such as a floor heating panel is used for a suitable radiating device, the hot water entering the radiating device is effectively reduced to a low temperature. With water, it is possible to prevent user's discomfort particularly at the entrance and damage to peripheral members beforehand.

According to the second aspect of the present invention, in addition to the above, a valve device for adjusting the flow rate of the hot water flowing through the hot water pipe is provided. Can be changed. Therefore,
For example, if the flow rate of hot water flowing into the radiator is reduced by a valve device, the radiating time of the hot water in the radiator is extended,
The temperature of the hot water returning to the hot water pipe further decreases. This makes it possible to further reduce the temperature of the hot water from the heat source device in the heat exchange device. Further, the temperature of the hot water flowing into the heat radiating device can be increased by performing the reverse operation. That is, it is possible to control the temperature of the hot water flowing into the heat radiating device by using the valve device.

According to the third aspect of the present invention, in addition to the above, the valve device is controlled based on the temperature of the hot water pipe, so that the temperature of the hot water flowing into the heat radiator according to the load condition in the heat radiator. Can be automatically controlled to a desired value, so that comfort and operability can be improved.

According to the fourth aspect of the present invention, in addition to the first aspect, a hot water valve is provided in the hot water pipe, and the flow rate of the hot water is adjusted by the hot valve according to the temperature of the hot water flowing through the inside. With this configuration, it is possible to automatically control the temperature of the hot water flowing into the heat radiator to a desired value according to the load condition in the heat radiator. In addition, since an electric control device is not required, the structure can be simplified in addition to the improvement of comfort and operability.

According to the fifth aspect of the present invention, in addition to the first aspect, the hot water pipe further includes a bypass circuit for bypassing a heat exchange section of the heat exchanger, and a flow path for adjusting the flow rate of the hot water flowing through the bypass circuit. Since the valve device is provided, the bypass circuit bypasses the heat exchange unit of the heat exchange device and allows the hot water from the heat source device to flow directly into the heat radiation device, and the flow rate of the hot water can be adjusted by the valve device. .

Thus, for example, when the temperature of the hot water flowing into the radiator is too low, the flow rate of the hot water from the bypass circuit can be increased to quickly raise the temperature. The temperature of the hot water flowing into the heat radiator can also be rapidly reduced. That is, the temperature of the hot water flowing into the radiator can be quickly and accurately controlled using the bypass circuit and the valve device.

According to the sixth aspect of the present invention, in addition to the first aspect, the hot water pipe is provided with a bypass circuit for bypassing the heat exchange section of the heat exchange device and a heat valve, and the heat valve flows inside the hot water pipe. Since the flow rate of hot water flowing through the bypass circuit is adjusted according to the temperature of the hot water, the bypass circuit bypasses the heat exchange section of the heat exchange device, allowing the hot water from the heat source device to flow directly into the radiator, The valve allows the flow rate of this hot water to be adjusted.

Thus, when the temperature of the hot water flowing into the heat radiating device is too low, the flow rate of the hot water from the bypass circuit can be increased to quickly raise the temperature. Accordingly, the temperature of the hot water flowing into the heat radiating device can be rapidly reduced. That is, it is possible to quickly and accurately automatically control the temperature of the hot water flowing into the radiator using the bypass circuit and the thermal valve. In addition, since an electric control device is not required, the structure can be simplified in addition to the improvement of comfort and operability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hot water heating apparatus to which the present invention is applied.

FIG. 2 is a piping configuration diagram for a floor heating panel of a hot water type heating apparatus to which the present invention is applied.

FIG. 3 is a piping configuration diagram for a floor heating panel of a hot water type heating apparatus according to another embodiment to which the present invention is applied.

FIG. 4 is a piping configuration diagram for a floor heating panel of a hot water type heating apparatus according to still another embodiment to which the present invention is applied.

FIG. 5 is a piping configuration diagram for a floor heating panel of a hot water type heating apparatus according to still another embodiment to which the present invention is applied.

FIG. 6 is a piping configuration diagram for a floor heating panel of a conventional hot water type heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot-water type heating device 2 Floor heating panel 3 Heat source device 16 Heat exchange device 17, 18, 19, 21, 27 Hot water piping 22 Heat exchange tank 24, 31 Electric valve 26 Thermistor 32 Open / close valve

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahisa Uenishi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A hot water heating apparatus comprising: a heat radiating device that receives a supply of hot water heated by a heat source device to perform a heating operation; and a hot water pipe that connects the heat source device and the heat radiating device. A hot water heating system comprising a heat exchange device for exchanging heat between hot water flowing through a hot water pipe that supplies hot water from the device to the heat radiating device and hot water flowing through a hot water pipe that returns hot water from the heat radiating device to the heat source device. apparatus. 2. The hot water heating apparatus according to claim 1, further comprising a valve device for adjusting a flow rate of the hot water flowing in the hot water pipe. 3. The hot water type heating apparatus according to claim 2, wherein the valve device is controlled based on a temperature of the hot water pipe. 4. The hot-water valve according to claim 1, further comprising a hot-valve provided in the hot-water pipe, wherein the hot-valve adjusts a flow rate of the hot water in accordance with a temperature of the hot water flowing through the hot-water valve. Heating system. 5. The hot water pipe is provided with a bypass circuit for bypassing a heat exchange section of the heat exchange device, and a valve device for adjusting a flow rate of the hot water flowing through the bypass circuit. Item 6. The hot water heating device according to Item 1. 6. A hot water pipe is provided with a bypass circuit and a heat valve that bypasses a heat exchange section of the heat exchanger, and the hot valve flows through the bypass circuit in accordance with the temperature of the hot water flowing inside. The hot water type heating apparatus according to claim 1, wherein the flow rate of the hot water is adjusted.