JP2003130446A - Heat source machine for hot-water heating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat source machine for hot-water heating of an one-can and two kinds of water type unaffecting the hot-water supply characteristic of a hot water supply piping system even while only a heating system is in operation. SOLUTION: The heat source machine 1 for hot-water heating supplies heat to a hot water supply system 3 and a heating system 5 using the same combustion part 9 and the same heat exchanger 11, and supplies heat to a bath water reheating system 7 using a water-water heat exchanger 49. A temperature sensor 23 is provided in a hot/cold water supply pipe 19 near the heat exchanger 11. During heating operation, ON-OFF combustion or proportional combustion is effected in the combustion part 9 in such a way that the temperature of water in the hot/cold water supply pipe 19, detected by the temperature sensor 23, does not exceed a predetermined threshold, to avoid a sudden rise in the temperature within the hot water supply system 3 and a change in water pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply and heating heat source machine having a heating system and a hot water supply system. In particular, it relates to a one-can, two-water hot water supply and heating heat source device that supplies heat to both systems with the same combustion unit and heat exchanger. Further, the present invention relates to a 1-can / 3-water bath water heating / heating heat source device in which a water-water heat exchanger is arranged in the heating circuit of the 1-can / 2-water hot water heating / heating source to heat and keep the bath warm.

[0002]

2. Description of the Related Art 1 can 2
In a water-type hot water supply / room heating heat source machine, a hot water supply system that supplies hot water to a kitchen or a washroom and a heating system that supplies hot water to a floor heating device or a bath heating device coexist in one heat exchanger. For this reason, even when only one system is used, the water pipe of the other system that is not used may be heated, and the water held in this water pipe may be heated and boiled. When only the hot water supply system is operated, the water pipe of the heating system is also heated at the same time, and when the heating system is subsequently operated, high-temperature hot water is suddenly supplied to the heating device. However, since a cistern (storage tank) open to the atmosphere is arranged in the heating system, rapid temperature changes and water pressure changes due to heating and boiling of water in the heating system are escaped here.

On the contrary, when only the heating system is operated, the water pipe of the hot water supply system is also heated. When the hot water tap is opened while the water is boiling in the water pipe, pulsation occurs, and even if cold water is supplied from the bypass pipe and mixed, the hot water temperature may not be stabilized. In addition, since there is no part open to the atmosphere such as cistern in the hot water supply system, the water pressure in the pipe changes due to heating of water, which causes problems such as bumping noise and damage to parts due to pressure increase. Sometimes.

The present invention has been made in view of the above problems, and provides a one-can-two-water hot-water supply heating heat source device that does not affect the hot-water supply characteristics of the hot-water supply pipe system even when only the heating system is operating. The purpose is to do.

[0005]

In order to solve the above problems, the first hot water supply / room heating heat source machine of the present invention is a can 2 that supplies heat to the hot water supply pipe and the heating water pipe in the same combustion unit / heat exchanger. A water-type hot water heater for heating and heating, comprising a temperature sensor installed in the hot water supply pipe near the heat exchanger,
During the heating operation, the combustor burns ON-OFF or proportionally in a range in which the water temperature in the hot water supply pipe detected by the temperature sensor does not exceed a predetermined threshold value. By maintaining the water temperature of the hot water supply water pipe within a predetermined temperature by performing ON-OFF combustion or proportional combustion in the combustion section, it is possible to suppress a rapid increase in the temperature in the hot water supply system and a change in water pressure, and to reduce hot water discharge characteristics ( It is possible to prevent large fluctuations in hot water temperature and the generation of bumping noise. When the combustion section is turned off by the temperature control, the heating capacity of the heating device or the like is reduced to some extent, but this temperature decrease is temporary and has no great influence.

In the present invention, if the hot water discharge thermistor is used also as the temperature sensor, it is not necessary to provide a new temperature sensor.

A second hot water supply / room heating heat source device of the present invention is a 1-can / 2-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger. The heating unit is provided with a pressure sensor installed in the pipe, and during the heating operation, the combustion unit is turned ON within a range in which the water pressure in the hot water supply pipe detected by the pressure sensor does not exceed a predetermined threshold value.
It is characterized by OFF combustion or proportional combustion. The same effect as that of the first hot water supply / room heating heat source device can be obtained by performing ON-OFF combustion or proportional combustion in the combustion unit to maintain the pressure in the hot water supply water pipe within a predetermined pressure.

A third hot water supply / room heating heat source device of the present invention is a 1-can / 2-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion part / heat exchanger. A temperature sensor is installed in the hot water supply pipe near the water heater, and water is supplied to the hot water supply pipe during heating operation so that the water temperature in the hot water supply pipe detected by the temperature sensor does not exceed a predetermined threshold value. Is characterized by.

A fourth hot water supply / room heating heat source device of the present invention is a 1-can / 2-water type hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger. A pressure sensor installed in the pipe is provided, and water is supplied to the hot water supply pipe during heating operation so that the water pressure in the hot water supply pipe detected by the pressure sensor does not exceed a predetermined threshold value.

For example, when a pouring pipe for supplying hot water from the hot water pipe to the bath is branched, if the pouring electromagnetic valve provided in the pouring pipe is opened to pour water into the bath, the hot water pipe will be Water is supplied from the water source. In this way, water is supplied to the hot water supply pipe to maintain the temperature in the hot water supply pipe within a predetermined temperature,
Alternatively, by maintaining the pressure in the hot water supply pipe within a predetermined pressure, the same effect as that of the first hot water supply and heating heat source device can be obtained.

A fifth hot water supply / room heating heat source device of the present invention is a 1-can / 2-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger. A temperature sensor installed in the hot water supply pipe near the water heater, and the heat exchanger has a structure in which at least the last row water pipe of the heating water pipe and the hot water supply water pipe are tied together, and when the water pipes are tied together The gap is filled with a substance having a high thermal conductivity, and during heating operation, the water flow rate of the heating water pipe is controlled so that the water temperature in the hot water supply pipe detected by the temperature sensor does not exceed a predetermined threshold value. It is characterized by changing.

A sixth hot water supply / room heating heat source device of the present invention is a 1-can / 2-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion section / heat exchanger. A pressure sensor installed in the hot water supply water pipe near the water heater, and the heat exchanger has a structure in which at least the last row water pipe of the heating water pipe and the hot water supply water pipe are tied together, and when the water pipes are tied together The gap part is filled with a substance having good thermal conductivity, and during heating operation, the water flow rate of the heating water pipe is controlled so that the water pressure in the hot water supply pipe detected by the pressure sensor does not exceed a predetermined threshold value. It is characterized by changing.

When the water pipes of the last row of the heating water pipes and the hot water supply water pipes are entangled with each other and the space between them is filled with a substance having a high heat transfer coefficient, when the water pipes of the hot water supply system are heated during operation of the heating system, The heat is transferred to the water pipes of the heating system via the high heat transfer rate substance, and is carried out of the heat exchanger by the hot water for the heating system. Therefore, the hot water supply pipe is prevented from being excessively heated. At this time, the hot water supply pipe is most likely to be heated in a portion where the temperature of the heating water pipe is highest, that is, in a portion of the heating water pipe in the heat exchanger, which is closest to the outlet side (final row). Therefore, by particularly tying the heating water pipe in this portion, heat can be efficiently transferred from the hot water supply pipe to the heating water pipe.

When the rotation speed of the heating pump is increased to increase the amount of water passing through the heating water pipe, the effect of absorbing heat from the hot water supply pipe hugging the heating water pipe is enhanced. Further, although the heating capacity is slightly reduced in the ON-OFF combustion or the proportional combustion of the combustion section, the heating capacity can be maintained by increasing the rotation speed of the pump to increase the amount of water passing through the heating water pipe. Therefore, by increasing the amount of water passing through the heating water pipe to maintain the temperature in the hot water supply pipe within a predetermined temperature or maintaining the pressure in the hot water supply pipe within a predetermined pressure, the temperature in the hot water supply system is increased rapidly. It is possible to suppress a rise and a change in water pressure.

A seventh hot water supply / room heating heat source device of the present invention is a 1-can / 2-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion part / heat exchanger. A temperature sensor installed in the hot water supply pipe in the vicinity of the heater, and further, a connection pipe having an opening / closing means for connecting the hot water supply pipe and the heating system is provided, wherein the heat exchanger is at least the heating water pipe. It has a structure in which the last row of water pipes and the hot water supply water pipes are tied together, and the gaps created when the water pipes are tied together are filled with a substance with good thermal conductivity, and during heating operation, the temperature sensor detects The opening / closing means of the connecting pipe is opened / closed so that the water temperature in the hot water supply water pipe does not exceed a predetermined threshold value.

An eighth hot water supply / room heating heat source device of the present invention is a 1-can / 2-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger. Equipped with a pressure sensor installed in the hot water supply pipe in the vicinity of the heater, further, a connection pipe having an opening and closing means for connecting the hot water supply pipe and the heating cistern is provided, wherein the heat exchanger is at least the heating water pipe. It has a structure in which the last row of water pipes and the hot water supply water pipes are tied together, and the gap that is created when the water pipes are tied together is filled with a substance with good thermal conductivity, and during heating operation, the pressure sensor detects The opening / closing means of the connecting pipe is opened / closed so that the water pressure in the hot water supply pipe does not exceed a predetermined threshold value.

The connection pipe is opened to send the heated water from the hot water supply pipe to the heating system to maintain the temperature of the water in the hot water supply pipe within a threshold value, or the pressure in the hot water supply pipe within a predetermined pressure. By maintaining the temperature at 1, it is possible to suppress a rapid rise in temperature in the hot water supply system and a change in water pressure.

In the present invention, if the connecting pipe and the opening / closing means are also used as a water supply system for the heating system turn, it is not necessary to newly install pipes or valves.

In the present invention, further, if the water-water heat exchanger for the heating water pipe and the bath water circulating water is provided, the bath can be reheated and kept warm.

[0020]

DETAILED DESCRIPTION OF THE INVENTION A description will be given below with reference to the drawings. FIG. 1 is a diagram schematically illustrating the structure of a hot water supply / room heating heat source device according to the first aspect of the present invention. This hot-water supply / heating heat source device 1 is equipped with a water heater
A one-can-three-water bath hot water heating / heating heat source machine that also arranges a water heat exchanger to reheat / heat the bath, and has a hot water supply system 3, a heating system 5, and a bath reheating system 7.

The combustion section 9 of the hot water supply / room heating heat source device 1 is provided with one heat exchanger 11, a gas burner 13, a fan (not shown) and the like. Water is sent from the water source to the heat exchanger 11 through the water supply pipe 15. Gas supply pipe 1 for burner 13
Combustion gas is supplied from 7, and combustion air is further sent from a combustion fan to burn and generate combustion gas. The generated combustion gas exchanges heat with the water flowing in the water supply pipe 15 in the heat exchanger 11 to heat the water. The heated hot water is sent to the hot water faucet in the kitchen or the bathroom through the hot water supply pipe 19. The water supply pipe 15 is provided with an incoming water thermistor 21, and the hot water supply pipe 19 is provided with an outgoing hot water thermistor 23.

The gas supply pipe 17 is provided with a source gas solenoid valve 24, a gas proportional valve 25, a switching solenoid valve (not shown) and the like. The original gas solenoid valve 24 supplies and stops gas from the gas supply source to the gas supply pipe 17, the gas proportional valve 25 controls the amount of gas supplied to the burner 13, and the switching solenoid valve supplies gas. The combustion area of the burner 13 is selected.

A bypass pipe line 29 having a bypass valve 27 is connected between the water supply pipe 15 and the hot water supply pipe 19.
Then, the temperature of the hot water in the hot water supply pipe 19 can be controlled by adjusting the opening degree of the bypass valve 27 and changing the amount of water flowing from the water supply pipe 15 to the bypass pipe 29 to adjust the mixing amount of hot water and cold water. .

The heat exchanger 11 is also connected to a heating system 5 comprising a return pipe 31 from the heating device and a forward pipe 33 to the heating device. In the heating system 5, the heat exchanger 1
The hot water heated in 1 is sent to the heating device through the outflow line 33, radiates heat, and passes through the return line 31 to the heat exchanger 11
It circulates so that it can be heated again. The return pipe 31 is provided with a heating system turn 35, a heating pump 37, and the like. The heating system turn 35 is a tank opened to the outside air, and is provided with a water level sensor (not shown). Further, to the heating system turn 35, a makeup water pipe 41 having an opening / closing valve 39 is branched and connected from the water supply pipe 15. The hot water returned from the heating device through the return conduit 31 is temporarily stored in the heating system stern 35 and circulated in the conduit by the pump 37. Although not shown, the heating system 5 is provided with a temperature thermistor, a bypass pipe, and the like.

When the heating device is operated to heat or radiate water in the heating system 5, the water pressure in the system changes. Since the heating system stern 35 is open to the outside air, it absorbs this water pressure change and maintains the pressure in the system. Further, when the water in the heating system turn 35 evaporates and the water level falls below a predetermined value, the on-off valve 39 is opened to change the water supply pipe 15 to the makeup water pipe 41.
Is replenished with water.

The bath reheating system 7 comprises a return line 43 from the bath and a going line 45 to the bath. Return line 43
Is equipped with a bath pump 47. Reheating system 7
And a part of the outflow pipe 33 of the heating system 5 and a water-water heat exchanger 49. In this water-water heat exchanger 49, the hot water in the heating return conduit 33 and the water in the bath return conduit 43 exchange heat, and the water in the bath return conduit 43 is heated. Then, the hot water in the system is circulated by the operation of the bath pump 47 until the temperature of the hot water detected by the hot water discharge thermistor (not shown) provided in the outgoing conduit 45 reaches a predetermined temperature. Although not shown, the reheating system 7 is also provided with a bypass pipe and a check valve.

The output signals of the thermistors 21, 23 and the water level sensor are sent to the control section 51. Based on these output signals and control signals from a remote controller (not shown) or the like, the control unit 51 causes the original gas solenoid valve 23, the gas proportional valve 25, and the on-off valve 3 to operate.
9, control the heating pump 37 and the like.

FIG. 2 is a diagram for explaining in detail the structure of the water pipe in the heat exchanger of the heating and hot water supply heat source device of FIG. 1, and FIG.
Is a horizontal sectional view of the heating and hot water supply heat source machine, and FIG.
FIG. 2C is a cross-sectional view of the water pipe. In the heat exchanger 11,
The outgoing pipe line 33 and the hot water supply pipe 19 are respectively folded back and arranged horizontally. Then, the hot water supply water pipe 19 is arranged on the side closer to the burner, and the outgoing pipe line 33 is arranged on the side distant from the burner, and these have a tying structure as shown in FIG. 2 (C). Then, a gap portion formed when the both water pipes are tied together is filled with a substance 53 having a high thermal conductivity. A brazing material, for example, is used as the substance 53 having a high thermal conductivity. By having such a structure, heat is transferred between both water pipes.

In this example, all the hot water supply pipes 19 in the heating heat source unit and the outgoing pipe line 33 are tied together, and the skimmer thereof is filled with the high thermal conductive material 53, but the temperature in the outgoing pipe line 33 is the highest. Only the water pipes of the final row (outlet side of the heat exchanger 11) are tied together, and the gap is removed by the heat conductive material 53.
May be filled with.

FIG. 3 is a sectional view showing an example of a method of tying water pipes together. In FIG. 3 (A), two hot and cold water supply pipes 19 are arranged centering on the going pipe 33, and a space between them is filled with a high thermal conductive substance 53. FIG. 3 (B) is a combination of two outflow pipes 33 and one hot water supply pipe 19 in a triangle,
The gap formed at the center is filled with the high thermal conductive material 53. In FIG. 3 (C), the hot water supply water pipes 19 are transformed into a crescent moon shape as shown in the drawing, and the two hot water supply water pipes 19 are routed to the forward conduit 33
It is brazed with a brazing material 53 which is a highly heat conductive substance. Also in FIG. 3 (D), as in FIG. 3 (C), the hot water supply pipe 1
9 is transformed into a crescent moon type, and two hot water supply water pipes 19 are brazed to a forward passage 33 with a brazing material 53. By such a method, the contact area between the hot water supply pipe 19 and the outflow pipe 33 increases, and the heat transfer coefficient improves.

FIG. 4 is a sectional view for explaining another structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG. In this example, the hot water supply pipe 19 and the outgoing pipe line 33 are arranged in two stages. The width of the fin-shaped heat exchanger 11 narrows from the hot water inlet (left side of the figure) to the outlet (right side of the figure) of the heating device, and the heat transfer amount from the burner is on the left side of the figure. Larger, smaller toward the right. As a result, the amount of heat input to the hot water supply pipe 19 decreases toward the right side, and the right side hot water supply pipe 19 is prevented from being excessively heated.

FIG. 5 is a sectional view for explaining another example of the structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG. In this example, the going pipe 33 becomes thicker toward the right side, and the hot water supply pipe 19 corresponding to the going pipe 33 is conversely thin. When only the heating device is operating, the rightmost hot water supply pipe 19 is heated most as described above, but its diameter is thin, and the diameter of the corresponding outflow pipe 33 is large. Since the amount of heat that can be received is large, the right side hot water supply pipe 19 is not overheated.

FIG. 6 is a diagram for explaining another example of the structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG.
FIG. 2A is a plan sectional view of a heating and hot water supply heat source machine, and FIG. In this example, the hot water supply water pipe 19 and the outgoing pipe line 33
The entrance and the exit are opposite on the left and right in the figure. That is, in the conventional heat source machine, the inlet and the outlet of the hot water supply pipe and the outgoing pipe are on the same side. However, in this embodiment, since the inlet and the outlet of each water pipe are arranged in reverse, the initial temperature of the hot water supply pipe 19 corresponding to the outgoing pipe line 33 having the highest temperature when only the heating device is in operation is low, so the hot water supply pipe 19
However, it is difficult to form a portion that is excessively heated. Further, since the temperature gradient becomes large, the amount of heat transferred from the hot water supply water pipe 19 to the going pipe line 33 also becomes large.

FIG. 7 is a view for explaining another example of the structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG.
FIG. 7A is a plan sectional view of a heating and hot water supply heat source machine, and FIG. In this example, in the last row of the forward passage 33, the forward passage 33 is arranged on the side closer to the burner (lower side in the figure), and the hot water supply pipe 19 is arranged on the far side (upper side in the figure), and the other portions are The positional relationship is reversed. Therefore, the hot water supply pipe 19 is located far from the burner in the highest temperature portion of the outflow pipe 33, and this portion is prevented from being excessively heated.

FIG. 8 is a view for explaining another example of the structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG.
FIG. 8A is a plan sectional view of a heating and hot water supply heat source machine, and FIG. In this example, the hot water supply water pipe 19 and the outgoing pipe line 33
Are arranged so as to be parallel to the length direction of the burner 13. Then, when only the heating device is in operation, the outgoing conduit 33
The burner on the final row (right side of the figure) of the
Books are burned intermittently. This prevents the hot water supply pipes 19 on the final row side from being excessively heated. The supply gas amount may be reduced instead of the intermittent operation of the burner.

Next, a case where only the heating operation is performed by the hot water supply / heating heat source device will be described. Even when only the heating operation is performed, in the combustion section 9, combustion occurs in the burner 13 and the heat exchanger 11 is heated. At this time, the control unit 51 includes a hot water supply thermistor 23 attached to the hot water supply pipe 19.
The output of is input. When the output of the hot water bath thermistor 23 reaches 90 ° C. in the heating operation, for example, the control unit 51
Instructs the gas proportional valve 25 and the gas switching valve to reduce the gas supply amount to the burner 13 or to stop the gas supply. By this operation, the burning ability of the burning section 9 is lowered.

When the output of the hot water discharge thermistor 23 drops to 60 ° C. in one example, the gas proportional valve 25 and the gas switching valve are opened again to operate the combustion section 9. In this way, by maintaining the output from the hot water outlet thermistor 23 at 60 to 90 ° C. as an example, rapid heating or boiling of the water in the water pipe in the hot water supply system 3 can be prevented. It should be noted that if the combustion capacity of the combustion section 9 is reduced or the combustion is stopped, the heating capacity of the heating system 5 is reduced, but this operation is temporary and does not affect the heating operation.

Further, as shown in FIG. 2, the water pipe in the last row of the heating water pipes having the highest temperature in the heating water pipes inside the heat exchanger 11 and the hot water supply water pipes hug each other, and a substance having a good heat transfer coefficient between them. Since it is filled with 53, even if the water pipe of the hot water supply system is heated during the operation of the heating system, this heat will generate high heat transfer coefficient substance 5.
It is transmitted to the heating water pipe via 3. Therefore, the hot water supply pipe is prevented from being excessively heated. At this time, the portion where the hot water supply water pipe is most easily heated is the portion where the temperature of the heating water pipe is highest, that is, the portion of the heating water pipe in the heat exchanger 11 that is closest to the outlet side (final row). By particularly tying these parts together, heat can be efficiently transferred from the hot water supply pipe to the heating water pipe.

The heating and hot water supply heat source device according to the second embodiment of the present invention has the same structure as the heating and hot water supply heat source device of FIG. 1, but a pressure sensor is provided in the hot water supply water pipe 19. The output of the pressure sensor is input to the control unit 51. When the control unit 51 determines that the water pressure in the hot water supply pipe detected by this pressure sensor has reached 5 kg / cm ² , for example,
The control unit 51 reduces or stops the combustion ability of the combustion unit 9.

The heating and hot water supply heat source device according to the third embodiment of the present invention has the same structure as the heating and hot water supply heat source device of FIG. 1, but supplies hot water when the temperature detected by the hot water supply thermistor 23 reaches a predetermined value. Water is passed through the water pipe 19. For example, the hot water supply pipe 19
When the pouring pipe to the bath is branched, when the pouring electromagnetic valve provided in the pouring pipe is opened to pour the water into the bath, water is supplied to the hot water supply pipe 19. Even if high-temperature water heated to the bath is poured, there is a large amount of bath water and the temperature of the bath water does not rise suddenly. Then, the temperature of the water in the hot water supply system 3 is lowered by the passage of water to the hot water supply pipe 19.

FIG. 9 is a diagram schematically illustrating the structure of a heating / hot water supply heat source machine according to a fourth embodiment of the present invention. This hot water supply / room heating heat source device has substantially the same configuration as the room heating / hot water supply heat source device, but a makeup water pipe 41 to the heating system turn 35.
Is branched from the hot water supply pipe 19. Hot water thermistor 23
When the temperature detected in 1 reaches a predetermined value, the opening / closing valve 39 of the makeup water pipe 41 is opened to send hot water from the hot water supply pipe 19 to the heating system turn 35. As a result, the temperature of the water in the hot water supply system 3 is lowered by passing the water through the hot water supply pipe 19. When the water level of the heating system turn 35 decreases due to evaporation, hot water is supplied from the hot water supply pipe 19.

The heating and hot water supply heat source device according to the fifth embodiment of the present invention has substantially the same configuration as the heating and hot water supply heat source device of FIG. 1, but when the temperature detected by the hot water supply thermistor 23 reaches a predetermined value. The control unit 51 gives an instruction to increase the rotation speed of the heating pump 37. As a result, the amount of water flowing through the heating system 5 per unit time increases, and the heat absorption capacity from the water supply pipes tied together in the heat exchanger 11 improves.

[0043]

As is apparent from the above description, according to the present invention, the combustion unit is turned on so that the water temperature and the water pressure in the hot water supply pipe do not exceed a predetermined threshold when only the heating system is operating.
-By performing OFF combustion, proportional combustion, or passing water through a hot water supply pipe, a rapid increase in temperature in the hot water supply system and a change in water pressure are suppressed. As a result, it is possible to provide a one-can-two-water hot water supply / room heating heat source device that prevents deterioration of hot water discharge characteristics (large fluctuation of hot water temperature) and generation of bumping noise.

[Brief description of drawings]

FIG. 1 is a diagram schematically illustrating a structure of a hot water supply / room heating heat source device according to a first aspect of the present invention.

FIG. 2 is a diagram for explaining in detail the structure of a water pipe in the heat exchanger of the heating and hot water supply heat source device of FIG. 1, FIG. 2 (A) is a plan sectional view of the heating and hot water supply heat source device, and FIG. FIG. 2C is a vertical cross-sectional view of the water pipe.

FIG. 3 is a cross-sectional view showing an example of a method of tying a water pipe.

FIG. 4 is a cross-sectional view illustrating another structure of the water pipe in the heat exchanger of the heating and hot water supply heat source device of FIG. 1.

5 is a cross-sectional view illustrating another structure of the water pipe in the heat exchanger of the heating and hot water supply heat source device of FIG.

FIG. 6 is a cross-sectional view illustrating another structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG. 1.

FIG. 7 is a cross-sectional view illustrating another structure of the water pipe in the heat exchanger of the heating / hot water supply heat source device of FIG. 1.

8 is a cross-sectional view illustrating another structure of the water pipe in the heat exchanger of the heating and hot water supply heat source device of FIG.

FIG. 9 is a diagram schematically illustrating a structure of a heating and hot water supply heat source device according to a fourth embodiment of the present invention.

[Explanation of symbols]

1 Hot water supply heating heat source device 3 Hot water supply system 5 Heating system 7 Bath reheating system 9 Combustion part 11 Heat exchanger 13 Gas burner 15 Water supply pipe 17 Gas supply pipe 19 Hot water supply pipe 21 Inlet water thermistor 23 Outlet thermistor 24 Original gas solenoid valve 25 Gas proportional valve 27 Bypass Valve 29 Bypass Pipeline 31 Return Pipeline 33 Forward Pipeline 35 Heating System Turn 37 Heating Pump 39 On-off Valve 41 Makeup Water Pipe 43 Return Pipeline 45 Outgoing Pipeline 47 Bath Pump 49 Water-Water Heat Exchanger 51 Control Section 53 High Heat Conductive substance

Claims (12)

[Claims] 1. A one-can, two-water type hot water supply / room heating heat source device that supplies heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger, and is installed in the hot water supply pipe near the heat exchanger. A temperature sensor, and during the heating operation, the combustion unit performs ON-OFF combustion or proportional combustion within a range in which the water temperature in the hot water supply pipe detected by the temperature sensor does not exceed a predetermined threshold value. Hot water heater for heating. 2. The hot water supply and heating heat source device according to claim 1, wherein the temperature sensor is also used as a hot water discharge thermistor. 3. A one-can, two-water hot / water heating / heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger, comprising a pressure sensor installed in the hot water supply pipe. During the heating operation, the hot water supply / heating heat source device is characterized in that the combustion unit performs ON-OFF combustion or proportional combustion within a range in which the water pressure in the hot water supply water pipe detected by the pressure sensor does not exceed a predetermined threshold value. 4. A one-can, two-water hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger, which is installed in the hot water supply pipe near the heat exchanger. A hot water supply / heating heat source device, comprising: a temperature sensor, wherein water is supplied to the hot water supply pipe during heating operation so that the water temperature in the hot water supply pipe detected by the temperature sensor does not exceed a predetermined threshold value. 5. A one-can, two-water type hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger, comprising a pressure sensor installed in the hot water supply pipe. During the heating operation, the hot water supply heating heat source device is characterized in that water is supplied to the hot water supply pipe so that the water pressure in the hot water supply pipe detected by the pressure sensor does not exceed a predetermined threshold value. 6. A one-can, two-water type hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger, which is installed in the hot water supply pipe near the heat exchanger. A temperature sensor, and the heat exchanger has a structure in which at least the last row water pipe of the heating water pipe and the hot water supply water pipe are tied together, and a gap portion formed when the water pipes are tied together has good thermal conductivity. It is filled with a substance, and during heating operation, the amount of water passing through the heating water pipe is changed so that the water temperature in the hot water supply pipe detected by the temperature sensor does not exceed a predetermined threshold value. . 7. A one-can, two-water type hot water supply and heating heat source device for supplying heat to a hot water supply water pipe and a heating water pipe in the same combustion unit / heat exchanger, which is installed in the hot water supply water pipe near the heat exchanger. A pressure sensor, the heat exchanger has a structure in which at least the last row water pipe of the heating water pipe and the hot water supply water pipe are tied together, and a gap portion formed when the water pipes are tied together has good thermal conductivity. It is filled with a substance, and during heating operation, the amount of water passing through the heating water pipe is changed so that the water pressure inside the hot water supply pipe detected by the pressure sensor does not exceed a predetermined threshold value. . 8. The hot water supply / heating heat source device according to claim 6, wherein the amount of water passing through the heating water pipe is increased by increasing the number of rotations of a pump that circulates the water in the heating water pipe. 9. A one-can, two-water type hot water supply / room heating heat source device for supplying heat to a hot water supply pipe and a heating water pipe in the same combustion unit / heat exchanger, which is installed in the hot water supply pipe near the heat exchanger. A temperature sensor, and further, a connecting pipe having an opening / closing means for connecting the hot water supply pipe and the heating system is provided, and the heat exchanger connects at least the last row water pipe of the heating water pipe and the hot water supply pipe. It has a structure in which the water pipes are tied together, and the gap that is created when the water pipes are tied together is filled with a substance with good thermal conductivity, and during heating operation, the water temperature in the hot water supply pipes detected by the temperature sensor has a predetermined value. A hot and cold water supply heat source machine characterized by opening and closing the connecting pipe opening and closing means so as not to exceed a threshold value. 10. A one-can, two-water type hot water supply / room heating heat source device for supplying heat to a hot water supply water pipe and a heating water pipe in the same combustion unit / heat exchanger, which is installed in the hot water supply water pipe near the heat exchanger. A pressure sensor, and further, a connecting pipe having an opening / closing means for connecting the hot water supply pipe and the heating system is provided, and the heat exchanger connects at least the last row water pipe of the heating water pipe and the hot water supply pipe. It has a structure in which the water pipes are tied together, and the gap that is created when the water pipes are tied together is filled with a substance with good thermal conductivity, and during heating operation, the water pressure in the hot water supply pipe detected by the pressure sensor is at a predetermined level. A hot-water supply / heating heat source device, characterized in that the opening / closing means of the connecting pipe is opened / closed so as not to exceed a threshold value. 11. The hot water supply and heating heat source device according to claim 9, wherein the connection pipe and the opening / closing means are also used as a water supply system to the heating system turn. 12. A water-water heat exchanger for the heating water pipe and bath water circulating water is further provided.
11. The hot-water supply / heating heat source device according to any one of 11 to 11.