JPH11173572A - Heat source device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat source device to perform reheating of bathtub water and feed a heating medium to a terminal machine for heating as a cost is reduced, and further reduce a time required for reheating of bathtub water as much as possible. SOLUTION: A heat source device comprises a burner 10 for reheating bath tub water to heat a heat-exchanger 6 for reheating bathtub water to heat hot water circulated through circulation passages 26 and 27 for reheating bath tub water for a bath; a burner 10 for heating to heat a heat exchanger 11 for heating to heat a heating medium for heating circulated through circulation passages 8 and 9 for heating to a terminal machine T for heating. The burner 10 for reheating bathtub water and the burner 10 for heating are jointly used through a single burner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reheating burner for heating a reheating heat exchanger for heating hot and cold water circulated through a reheating circuit of a bath, and a heating terminal. The present invention relates to a heat source device provided with a heating burner for heating a heating heat exchanger for heating a heating heat medium circulated through a heating circulation path.

[0002]

2. Description of the Related Art In a heat source device as described above, conventionally, a reheating furnace is heated by a reheating burner dedicated to reheating, and a heating heat exchanger is different from the reheating burner. It was configured to heat with another heating burner dedicated to heating.

[0003]

Therefore, conventionally, a reburning burner for heating the reheater heat exchanger and a heating burner for heating the heating heat exchanger are separately required, which leads to an increase in cost. There was a problem of inviting.

[0004] The present invention has been made in view of such a problem, and its object is to reduce the cost.
An object of the present invention is to provide a heat source device that enables reheating of a bath and supply of a heat medium to a terminal for heating, and further minimizes the time required for reheating.

[0005]

To achieve this object, according to the first aspect of the present invention, a reheating burner for heating a reheating heat exchanger and a heating heat exchanger are heated. A single burner is also used as a heating burner. In other words, conventionally, two burners, a post-burning burner and a heating burner, were required. However, the same burner can be used in common. Can be reduced.

According to the second aspect of the present invention, the liquid-to-liquid heat exchanger for exchanging heat with the heating heat medium is provided in the additional heating circulation path, and is provided via the liquid-to-liquid heat exchanger. The heat of the heating heat medium is supplied to the hot and cold water circulated through the additional heating circuit. Therefore, the hot and cold water in the reheating circuit is heated by the liquid heat exchanger in addition to the reheating heat exchanger, so that the time required for the reheating is reduced as much as possible. In particular, when the heating terminal is not operated, the heat of the heating heat medium heated by the heating heat exchanger may be wasted, but the heat of the heating heat medium is subjected to liquid heat exchange. Since the water can be recovered to the hot water side for additional heating by the vessel, it is possible to eliminate disadvantages caused by using both the additional burner and the heating burner.

According to the third aspect of the invention, both the reheating heat exchanger and the heating heat exchanger are constituted by fin tube type heat exchangers, and the fins of both heat exchangers are provided. , Are shared by the same fins. Therefore, the cost can be reduced as compared with the case where the fins are separately provided,
It is possible to reduce the size of the heat exchanger.

According to the fourth aspect of the invention, there is provided a hot water supply burner for heating a hot water supply heat exchanger for heating the water from the water supply path and supplying the same to the hot water supply path. The heating circulation path is connected to a bathing path for bathing. Therefore, with one heat source device, not only additional heating and heating of the bath, but also hot water filling in the bath can be performed, and the device can be conveniently used while reducing costs.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat source device according to the present invention will be described with reference to the drawings. As shown in FIG. 1, this heat source device heats water from a water supply channel 1 connected to a general household water pipe, and supplies the heated water to a hot water channel 3 provided with a hot water tap 2 at a tip. The hot water supply heat exchanger 4 is configured to be heated by a hot water supply gas burner 7.

Further, the heat source device heats hot and cold water as a heating heat medium from a heating return path 8 of a heating terminal T connected to various heating devices such as a floor heating device and a bathroom heating device. Then, a fin tube type heating heat exchanger 11 for supplying the heating outgoing path 9 to the heating terminal T, and a fin tube type additional heat exchange for heating the hot water in the bathtub 5 and reheating the same. The heat exchanger 11 for heating and the heat exchanger 6 for additional heating are configured to be heated by a single heating gas burner 10 which also serves as an additional heating burner. Note that the heating heat medium is not limited to hot and cold water, and may be another heat medium.

The heat exchangers 6 and 11 will be described in detail. As shown in FIG. 2, a reheating heat exchanger 6 includes a plurality of fins 6a for heating and a tube 6b penetrating the fins 6a. The heating heat exchanger 11 is also composed of a plurality of fins 11a for heating and a tube 11b penetrating the fins 11a. The plurality of fins 6a of the additional heat exchanger 6 and the plurality of fins 11a of the heating heat exchanger 11 are integrally formed and shared by the same fin.

The hot-water supply gas burner 7 for heating the hot-water supply heat exchanger 4 is a multistage burner, and a gas supply path 12 for supplying general household fuel gas is branched and connected to three systems.
A gas switching solenoid valve 13a is provided in each gas supply path 12,
Electromagnetic hot water supply gas proportional valve 1 for adjusting fuel gas supply
3b, a hot water supply intermittent valve 13c for intermittently supplying fuel gas, and the like are provided. Further, the gas supply path 12 is branched and connected so as to supply the fuel gas also to the heating gas burner 10 that heats the reheating heat exchanger 6 and the heating heat exchanger 11. Intermittent valve 1 for intermittent heating
4a, an electromagnetic heating gas proportional valve 14b for adjusting the fuel gas supply amount, and the like are provided. In the gas supply path 12 upstream of the branch connection point, a source gas solenoid valve 15 for intermittently supplying fuel gas is provided. Is provided.

The gas burners 7, 10 are housed in the same combustion chamber, and are provided with combustion fans 7a, 10a for supplying combustion air to the gas burners 7, 10, respectively.
Near both gas burners 7,10, both gas burners 7,1
An ignition igniter for performing an ignition operation for 0, a frame rod for detecting whether or not both gas burners 7, 10 are ignited, and the like are provided.

Water supply channel 1 connected to a general household water pipe
Is provided with a water supply thermistor 16 for detecting the water supply temperature and a water amount sensor 17 for detecting the water supply amount. The water supply channel 1 and the hot water supply channel 3 downstream of the water supply thermistor 16 and the water amount sensor 17 are connected via a water supply bypass passage 18 so as to bypass the hot water supply heat exchanger 4.

A hot water supply thermistor 19 for detecting the temperature of hot water from the hot water supply heat exchanger 4 and a hot water supply amount from the hot water supply heat exchanger 4 are arranged in order from the upstream side in the hot water supply path 3 provided with the hot water tap 2 at the tip. Mixing valve 20 for adjusting the mixing ratio of water and the amount of water from water supply bypass passage 18, and tapping thermistor 21 for detecting the temperature of the hot and cold water mixed by mixing valve 20.
And a water proportional valve 22 for adjusting the amount of hot and cold water, and an interruption water amount sensor 23 for detecting interruption of general hot water supply.

The mixing valve 20 is provided at a location where the water supply bypass passage 18 and the hot water supply passage 3 are connected.
A hot water supply channel 25 for supplying hot water from the hot water supply channel 3 to the bathtub 5 is connected to the hot water supply channel 3 between the second water supply sensor 23 and the interruption water flow sensor 23.

A return path 26 for the bathtub from the bathtub 5 and a forward path 27a for the first bathtub are connected to the heat exchanger 6 for reheating, and a liquid-liquid heat exchanger 30 for reheating is connected to The one bathtub outgoing path 27a and the second bathtub outgoing path 27b to the bathtub 5 are connected. The first bathtub going path 27a and the second bathtub going path 27b constitute a bathtub going path 27,
The bathtub going path 27 and the bathtub return path 26 are connected to the bathtub 5 via a bath adapter 28 to form a reheating circuit.

By driving the reheating pump 29 provided in the bathtub return path 26, the hot water in the bathtub 5 is circulated through the bathtub return path 26 and the bathtub forward path 27. That is, the hot and cold water in the bathtub 5 is supplied to the reheating heat exchanger 6 via the bathtub return path 26, and then supplied to the reheating liquid-liquid heat exchanger 30 via the first bathtub outward path 27a. The bathtub 5 is further connected via the second bathtub outbound path 27b.
Supplied within.

The bathtub return path 26 includes, in order from the upstream side, a pressure detection type water level sensor 31 for detecting the water level in the bathtub 5 by detecting pressure, a bath return thermistor 34, and a bathtub return. An electromagnetic bath two-way valve 32 for opening and closing the passage 26, a reheating pump 29 for recirculating hot and cold water,
A water flow switch 33 is provided. Then, the second bath tub outgoing passage 27 downstream of the reheating liquid-to-liquid heat exchanger 30.
b has a bath thermistor 35 for a bathtub.

A bath lining 25 for supplying hot water from the hot water supply path 3 to the bath 5 is connected to a bath tub return path 26 between a reheating circulation pump 29 and a water flow switch 33. . The hot water path 25 is connected to the hot water path 2 from the upstream side.
A water filling electromagnetic valve 35 and a water filling check valve 36 are provided as opening / closing means for filling the water 5. In addition, the filling path 2 between the filling electromagnetic valve 35 and the filling check valve 36.
5 is provided with an air layer forming hopper 37 communicating with the hot water path 25.

The air layer forming hopper 37 is provided with a drainage channel 38 for draining hot water and an electromagnetic drainage valve 39 serving as a drainage opening / closing valve for opening and closing the drainage channel 38. The part is a bath two-way valve 32 and a reheating pump 29
Is connected to a bathtub return path 26 between the two.

The heating heat exchanger 11 is connected with a heating return path 8 and a heating forward path 9 as a heating circulation path.
The heating return path 8 is provided with an expansion tank 40 of an open-to-atmosphere type and a heating circulation pump 41 from the upstream side, and the heating outward path 9 is provided with the heating heat exchanger 11 from the upstream side.
A heating thermistor 42 for detecting the temperature of the hot and cold water after being heated by the heater, and a heating liquid / liquid heat exchanger 30 are provided.

The heating return path 8 upstream of the expansion tank 40 and the heating forward path 9 downstream of the heating liquid / liquid heat exchanger 30 bypass the heating terminal T. The heating bypass passage 43 is connected via a heating bypass passage 43, and the heating bypass passage 43 is provided with an on-off valve 44 for additional heating. In the expansion tank 40, when bubbles are generated in the circulating hot and cold water, the bubbles are released to the atmosphere to suppress an abnormal boiling phenomenon, and the inside of the heating return path 8 and the heating forward path 9 is always filled with hot water. I am trying to be.

As shown in FIG. 3, the heating liquid / liquid heat exchanger 30 is configured such that the bathtub going path 27 and the heating going path 9 are partially inside the bathtub going path 27 for heating. It is configured so as to form a concentric double structure with the outgoing path 9 outside. That is, heat is supplied from the hot and cold water of the heating outgoing passage 9 to the hot and cold water of the bathtub outgoing passage 27, so that the hot and cold water in the bathtub outgoing passage 27 is heated.

By driving the heating circulation pump 41, hot and cold water as the heating heat medium is supplied to the heating terminal T.
Is supplied to the heating heat exchanger 11 via the heating return path 8, and the heated hot water is supplied to the heating terminal T via the heating forward path 9. At this time, the additional heating on-off valve 44 is closed. That is, when the hot and cold water in the bathtub 5 is additionally fired, the additional heating on-off valve 44
Is opened, the hot water heated by the heating heat exchanger 11 is circulated through the heating bypass 43 and supplied to the reheating liquid-to-liquid heat exchanger 30.

The control unit H for controlling the operation of the hot water supply device includes a microcomputer and is configured to be able to communicate with the remote controller 45. The remote controller 45 has an operation switch 46 for instructing start and stop of operation, a hot water switch 47 for instructing hot water operation, a reheating switch 48 for instructing additional heating, and a heating operation for instructing operation of the heating device. A switch 49 and a temperature setting switch 50 for setting a general hot water supply temperature and a hot water supply temperature are provided. It should be noted that one or more remote controllers as described above may be provided.

The control operation of the water heater by the control unit H will be described. First, when the operation switch 46 of the remote controller 45 is turned on, a general hot water supply operation from the hot water tap 2 and a hot water filling operation are enabled. In the general hot water supply operation in which hot water is supplied from the hot water tap 2, when the hot water tap 2 is opened and the amount of water detected by the water amount sensor 17 exceeds a predetermined amount, the fan 7a is driven, and then the original gas electromagnetic valve 15 and the hot water intermittent valve 13c are opened. The valve is adjusted to adjust the opening of the hot water supply gas proportional valve 13b, and the igniter ignites the hot water supply gas burner 7.

When the hot gas supply gas burner 7 is ignited, the gas switching solenoid valve 13a is operated based on the hot water supply temperature set by the temperature setting switch 50 of the remote controller 45, the water temperature detected by the water supply thermistor 16, the water amount detected by the water amount sensor 17, and the like. Is switched appropriately, so-called feedforward control is performed such that the opening degree of the hot water supply gas proportional valve 13b is adjusted, and the opening degree of the mixing valve 20 is also adjusted so that the hot water supply temperature becomes the set temperature.

In addition to the feedforward control, the opening degree of the hot water supply gas proportional valve 13b is finely adjusted based on the difference between the hot water supply temperature set by the temperature setting switch 50 of the remote controller 45 and the hot water temperature detected by the hot water supply thermistor 21. That is, so-called feedback control is executed, and hot water at the temperature set by the temperature setting switch 50 is supplied from the hot water tap 2. Then, when the hot water tap 2 is closed and the water amount sensor 17 does not detect a predetermined amount of water flow, the original gas solenoid valve 15 and the hot water supply intermittent valve 13c are closed to stop the combustion of the hot water supply gas burner 7, and the constant temperature is maintained. After a lapse of time, the fan 7a also stops, and the general hot water supply operation ends.

In the filling operation for filling the bathtub 5, when the filling switch 47 of the remote controller 45 is turned on, the filling electromagnetic valve 35 is opened, and when the water amount sensor 17 detects a water flow of a predetermined amount or more, The hot water gas burner 7 is ignited in the same manner as in the general hot water supply operation described above, and hot water at a set temperature is supplied to the bathtub 5 by feedforward control and feedback control. That is, the opening degree of the hot water supply gas proportional valve 13b and the mixing valve 20 is adjusted so that the water from the water supply passage 1 is heated by the hot water supply heat exchanger 4, and the heated hot water is supplied to the water supply bypass passage 18
From the water, the hot water of the temperature set by the temperature setting switch 50 is supplied to the bathtub return path 26 through the hot water path 25.
Is supplied to the bathtub going path 27, and is supplied into the bathtub 5 from both the bathtub return path 26 and the bathtub going path 27.

When a predetermined amount of hot and cold water is supplied into the bathtub 5, the original gas solenoid valve 15 and the hot water supply intermittent valve 13c are closed based on the detection information of the water level sensor 31, and the combustion of the hot water supply gas burner 7 is performed. Is stopped, and after driving for a certain period of time, the fan 7
a is also stopped, and the filling operation ends. When the hot-water tap 2 is opened during the hot water filling operation, the interruption water amount sensor 23 detects the water flow, stops the hot water filling operation, and executes the general hot water supply operation. That is, the general hot water supply operation is executed with priority, and when the hot water tap 2 is closed, the hot water filling operation is restarted.

When the above filling operation is completed, the hot water in the hopper 37 is discharged to the bathtub return path 26 and the like by opening the drain valve 39 for a certain period of time. Then, the recirculating pump 29 is operated, and the hot water in the bathtub 5 and the hot water discharged from the hopper 37 are circulated through the return path 26 for the bathtub and the forward path 27 for the bathtub, and are detected by the return thermistor 34. If the hot water temperature has reached the set hot water temperature of the remote controller 45, the additional heating circulation pump 29 is stopped. If the hot water temperature has not reached the set hot water temperature of the remote controller 45, the additional heating operation is automatically executed.

The reheating operation for heating the hot water in the bathtub 5 is automatically shifted to the reheating operation after the completion of the filling operation as described above, or the reheating switch 48 of the remote controller 45 is turned on. While the hot water in the bathtub 5 is circulated through the bathtub return path 26 and the bathtub going path 27 by the operation of the firing circulation pump 29, the reheating heat exchanger 6 and the reheating liquid-to-liquid heat exchanger 3 are circulated.
The heating is performed by heating the water in the bathtub 5 according to 0.

More specifically, the heating gas burner 1
If 0 is not burning, the recirculation pump 29 is started to operate, the fan 10a is driven in accordance with the detection of the water flow by the water flow switch 33, and then the original gas solenoid valve 15 and the intermittent heating valve 14a are opened. The igniter ignites the heating gas burner 10 to start combustion, and the hot and cold water in the bathtub 5 is reheated by the additional heat exchanger 6 and the heating liquid. Heat is performed by the heat exchanger 30. that time,
The additional heating on-off valve 44 is opened, and the hot water heated by the heating heat exchanger 11 is circulated through the heating bypass 43, and based on the detected hot water temperature of the outgoing thermistor 35, the heating gas proportional valve is used. Adjust the opening of 14b.

In this way, the hot and cold water in the bathtub 5 is circulated through the bathtub return path 26 and the bathtub forward path 27,
It is heated by the reheating heat exchanger 6 and the reheating liquid-to-liquid heat exchanger 30 and refired. In the operating state of the heating terminal T in which the heating gas burner 10 is already burning, the additional heating is performed. Simultaneously with the start of the operation of the circulation pump 29 for heating, it is heated by the heat exchanger 6 for additional heating and the liquid heat exchanger 30 for additional heating to be additionally heated. At that time, the additional heating on-off valve 44 is closed, and the hot water after being heated by the heating heat exchanger 11 is
It is supplied to the heating terminal T.

As described above, when the hot water in the bathtub 5 is heated by the additional heat exchanger 6 or the like and the hot water temperature detected by the return thermistor 34 reaches the hot water temperature set by the remote controller 45, the reheating operation ends. Judgment is made, the combustion of the heating gas burner 10 is stopped, and the fan 10a is stopped after a lapse of a predetermined time. When the heating operation described below is being performed, each operation continues even after the reheating operation is completed. Executed.

In this way, while circulating the hot water in the bathtub 5 through the bathtub return path 26 and the bathtub forward path 27,
Since heating can be efficiently performed by the reheating heat exchanger 6 and the reheating liquid-to-liquid heat exchanger 30, the time required for reheating can be reduced, and the running cost can be reduced.

When the heating operation switch 49 of the remote controller 45 is turned on when the heating operation switch 49 of the remote control 45 is turned on, the heating circulation pump 41 drives the heating terminal T from the heating return path 8. The hot water is supplied to the heating heat exchanger 11, the heated hot water is supplied to the heating terminal T via the heating going path 9, and the hot water exchanged by the heating terminal T is returned to the heating return path. 8 to the expansion tank 40.
Then, the openings of the heating gas proportional valve 14b and the like are adjusted such that the detected hot water temperature of the heating thermistor 42 becomes a set hot water temperature (for example, 80 ° C.).

[Other Embodiments] (1) In the above embodiment, the hot water in the bathtub 5 is circulated through the bathtub return path 26 and the bathtub outgoing path 27 while the reheating heat exchanger 6 and the reheating are used. It is configured to heat and refire by heating by the liquid-liquid heat exchanger 30, while circulating the hot water in the bathtub 5 through the return path 26 for the bathtub and the outward path 27 for the bathtub, You may comprise so that it may heat by only the exchanger 6 and re-fire.

(2) In the above embodiment, the reheater heat exchanger 6 and the heating heat exchanger 11 are both constituted by fin tube type heat exchangers. Although the fins are shared by the same fins, the fins do not necessarily need to be shared, and the fins 6a of the reheating heat exchanger 6 and the fins 11a of the heating heat exchanger 11 are configured by separate fins. You may.

(3) In the above embodiment, the bathtub return path 2
A hot water path 25 connecting the hot water supply path 6 to the hot water supply path 3 is provided, and the bath is filled with hot water through the hot water supply path 25. It may be configured to supply hot water directly into the inside.

(4) In the above-described embodiment, as an example of the reheating liquid-to-heat exchanger 30, the bathtub outgoing path 27 is configured to pass through the heating outgoing path 9 concentrically. Conversely, the heating path 9 may pass through the bathtub path 27, or the bathtub path 27 and the heating path 9 may be brought into contact with each other to form a liquid-liquid heat exchanger. You can also.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a heat source device.

FIG. 2 is a perspective view of a main part of the heat source device.

FIG. 3 is a configuration diagram of a liquid-liquid heat exchanger.

[Explanation of symbols]

 Reference Signs List 1 water supply path 3 hot water supply path 4 heat exchanger for hot water supply 6 heat exchanger for additional heating 6a fin of additional heat exchanger 7 burner for hot water supply 8, 9 heating circulation path 10 heating burner as additional burner 11 Heating heat exchanger 11a Heating heat exchanger fins 25 Hot water path 26, 27 Reheating circuit 30 Liquid heat exchanger 35 Opening / closing means for hot water T Terminal for heating

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Enomoto Yu, 1-15-1 Oka, Minami-shi, Minato-ku, Osaka, Osaka Prefecture Within Herman Co., Ltd. (72) Naoki Tanaka 1-1-52, Oka, Minami-shi, Minato-ku, Osaka, Osaka No. Harman Co., Ltd. (72) Inventor Hirosao Iida 1-152 Oka, Minami-ku, Minato-ku, Osaka-shi, Osaka No. 72 Inventor Noriyo Nakanishi 1-1-52 Oka, Minami-shi, Minato-ku, Osaka, Osaka No. Harman Co., Ltd.

Claims (4)

[Claims] 1. A reheating burner for heating a reheating heat exchanger for heating hot water circulated through a reheating circuit of a bath, and a heating terminal via a heating circuit to a heating terminal. A heating source device provided with a heating burner for heating a heating heat exchanger for heating the heating heat medium circulated, wherein the reheating burner and the heating burner are a single unit. A heat source device that is also used for burners. 2. A liquid heat exchanger for exchanging heat between the heating heat medium and the heating heat medium is provided in the additional heating circuit, and the liquid heat exchanger communicates with the heating heat medium through the liquid heat exchanger. The heat source device according to claim 1, wherein the heat source device is configured to supply heat to the hot and cold water circulated through the reheating circuit. 3. The heat exchanger for reheating and the heat exchanger for heating are both constituted by fin tube type heat exchangers, and the fins of both heat exchangers are shared by the same fin. The heat source device according to claim 1. 4. A hot water supply burner for heating a hot water supply heat exchanger for supplying water to the hot water supply path by heating water from the water supply path, wherein the hot water supply path and the additional heating circulation path are provided in a bath. The heat source device according to any one of claims 1 to 3, wherein the heat source device is connected by a hot water filling path.