JP2001124350A - Heating-medium supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating-medium supply system capable of filling a heating medium in a heat load and a heating-medium circulation channel infallibly and in a short time. SOLUTION: In a heating-medium supply system, control means 6 for controlling heating medium circulation performs a heating-medium circulating process by operating heating means such that the temperature of a heating medium supplied from a heat source 4 becomes a target temperature therefor and mixing means 9 such that the temperature of mixed heating medium becomes the target temperature for a heat load, while operating the circulating means and the heat-load-side circulating means 10 when the control means 6 receives the instruction of circulating the heating medium, and performs a heating-medium filling process by operating the mixing means 9 such that a bypass channel 3 is in a closed state in which the heating medium does not or almost does not flow therethrough while operating the circulating means and the heat-load-side circulating means 10 when the control means 6 receives the instruction of heating- medium filling operation for filling the heating medium in a heat load 1 and a heating medium circulation channel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating means for circulating a heat medium through a heat medium circulation path connected to a heat load, a heating means for heating the heat medium, and a heating medium for flowing the heat medium into the heat medium circulation path. A heat source device provided with a replenishing means for automatically replenishing is provided, and a bypass path is provided at an intermediate position of the heat medium circulation path to allow the return heat medium of the return side circulation path part to bypass-flow to the outgoing side circulation path part. Mixing means for adjusting the mixing ratio of the return heat medium from the bypass and the heat medium from the heat source unit; and mixing the heat medium mixed by the mixing means with the heat medium circulation path and the bypass path. A heat load side circulating means for circulating the heat load through the heat load; and a control means for managing the heat medium circulating operation. Circulating the side circulation means, Heating the heating means so that the temperature of the heat medium going from the heat source device becomes the target temperature for heat source supply, and the mixing means so that the temperature of the mixed heat medium becomes the target temperature for heat load. The present invention relates to a heat medium supply system configured to execute a heat medium circulation process for performing a mixing operation.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open No. 9-318082, for example, a heat medium supply system as described above uses a heat medium of a temperature suitable for a heat load such as a floor heating panel as a heat load. The mixing means is operated to achieve the target temperature for heat load corresponding to the temperature required by the heat load, and the target temperature for heat load corresponding to the temperature required by the heat load Is supplied to the heat load. Specifically, the mixing means is operated by mixing 80 ° C. high-temperature water from the heat source device and 30 ° C. hot water from the bypass passage, and supplying 60 ° C. hot water to a heat load such as a floor heating panel. I try to make it.

[0003] In the heat medium supply system, it is necessary to fill the heat load and the heat medium circulation path with the heat medium after the system is installed. For this purpose, the control means controls the mixing means as described above. While mixing,
The circulating means and the heat load side circulating means are circulated so that the heat medium supplied from the heat source device is filled in the heat load and the heat medium circulation path.

[0004]

However, in the above-described conventional heat medium supply system, even when the heat load and the heat medium circulation path are filled with the heat medium, the heat medium is supplied from the heat source device in order to perform the mixing operation of the mixing means. The entire amount of the heat medium to be heated cannot be flowed accurately to the outgoing side circulation path portion on the heat load side than the mixing means, and only a part of the heat load and the heat medium circulation path can be filled with the heat medium. However, there is a problem that even if the heat medium and the entire heat medium circulation path can be filled with the heat medium, it takes time to fill the heat medium.

[0005] That is, the entire amount of the heat medium supplied from the heat source device is caused to flow accurately to the outgoing side circulation path portion closer to the heat load side than the mixing means, so that the heat load and the heat medium circulation path can be reliably and quickly supplied. However, in the above-described conventional heating medium supply system, even when the heating medium and the heating medium circulating path are filled with the heating medium, the mixing means is operated to perform mixing. The heat medium supplied from the heat source flows into the outgoing side circulation path portion on the heat load side of the mixing means in a state where the flow thereof is restricted by the mixing means, and the entire amount of the heat medium supplied from the heat source device is mixed. In some cases, it is not possible to make the fluid flow more accurately in the outgoing side circulation path portion on the heat load side.

[0006] The fact that the heat medium supplied from the heat source device is unnecessarily throttled by the mixing means and flows will be described. For example, the heat source device may be heated to a target temperature for heat load by operating the heating means. When a high-temperature heat medium is supplied, the result is that the high-temperature heat medium from the heat source unit and the low-temperature heat medium from the bypass are mixed to adjust the temperature of the mixed heat medium to the target temperature for heat load. The heat medium supplied from the heat source device flows in a state narrowed by the mixing means, and the mixing means changes due to a change in pressure of the heat medium.
Since the actual mixing ratio between the heat medium going out of the heat source device and the heat medium returning from the bypass path changes, the heat medium supplied from the heat source device may vary depending on the pressure of the heat medium going out and the heat medium being returned. There is a possibility that the entire amount of the heat medium supplied from the heat source device cannot be made to flow accurately to the outgoing-side circulation path portion on the heat load side of the mixing means, for example, because it flows in a state narrowed by the mixing means. Was.

The present invention has been made in view of such a point, and an object of the present invention is to supply a heat medium that can reliably and quickly fill a heat load and a heat medium circulation path with a heat medium. The point is to provide a system.

[0008]

According to the first aspect of the present invention, there is provided a circulating means for circulating a heat medium through a heat medium circulating path connected to a heat load. A heating means for heating the heating medium circulation path, and a replenishing means for automatically replenishing the heating medium circulation path with a heating medium are provided. A bypass is provided for allowing the heat medium to flow by-pass in the outgoing-side circulation path portion, and a mixing unit that adjusts a mixing ratio between the return heat medium from the bypass and the outgoing heat medium from the heat source unit, and the mixing unit. Heat load side circulation means for circulating the mixed heat medium through the heat medium circulation path and the bypass path to the heat load, and control means for managing the heat medium supply operation, the control means, When the heat medium circulation operation is commanded, Circulating the ring means and the heat load side circulating means, heating and operating the heating means so that the temperature of the heat medium coming from the heat source device becomes the heat source supply target temperature, and the temperature of the mixed heat medium In a heat medium supply system configured to execute a heat medium circulation process of mixing and operating the mixing means so as to reach a target temperature for heat load, the control means controls the heat load and the heat medium circulation path to generate heat. When a heat medium filling operation for filling the medium is instructed, the circulation means and the heat load side circulation means are circulated, and a bypass passage closed state in which the heat medium does not flow through or close to the bypass passage. And a heat medium filling process for operating the mixing means.

In other words, by instructing the heat medium charging process, the control means activates the circulating means and the heat load side circulating means and, in addition, there is no or no flow of the heat medium through the bypass passage. Activating the mixing means in the near bypass passage closed state, since the heat medium filling processing is performed, that is, in this heat medium filling processing, the mixing means in the bypass path closed state,
Irrespective of the temperature of the heat medium supplied from the heat source unit, avoiding giving unnecessary restriction to the flow of the heat medium by the mixing means,
Also, even if the actual mixing ratio changes due to the pressure of the heat medium, the mixing means avoids giving unnecessary restriction to the flow of the heat medium as much as possible. When filling the heat load and the heat medium circulation path with the heat medium, by instructing the heat medium filling operation and performing the heat medium filling processing, unnecessary mixing with the heat medium from the heat source device by the mixing means is performed. Without giving, the heat medium can be filled in the heat load and the heat medium circulation path while the entire amount of the heat medium is accurately made to flow to the outgoing side circulation path portion on the heat load side of the mixing means. It is. Therefore, it is possible to fill the heat load and the heat medium circulation path with the heat medium while accurately flowing the entire amount of the heat medium from the heat source device to the outgoing side circulation path portion on the heat load side than the mixing means. Therefore, it is possible to reliably and quickly fill the heat load and the heat medium circulation path with the heat medium after the system is installed.

[0010] According to the second aspect of the present invention, a part of the heat medium circulation path in which the bypass path is provided, the mixing means, and the heat load side circulation means, It is provided integrally as a mixing unit. That is, since a part of the heat medium circulation path in which the bypass path is provided, the mixing means, and the heat load side circulation means are integrally provided, the mixing can be performed simply by installing the mixing unit. It is possible to install a means, a heat load side circulating means, and the like, and it is easy to install a mixing means, a heat load side circulating means, and the like.

According to the third aspect of the present invention, the mixing unit is provided with a heat medium charging operation command means for commanding the heat medium charging operation.

That is, it is conceivable to provide a heat medium charging operation command means for commanding the heat medium charging operation in a remote controller or a heat source device for commanding a control command to the control means. If the remote control is provided with a heat medium charging operation command means, it is necessary to cooperate with the already provided operation switch and other switches. The structure may be complicated. Also, in the case where the heat source device is provided with the heat medium charging operation command means, similarly, it is necessary to cooperate with already provided devices, and the structure may be complicated accordingly.

However, since the mixing unit newly installed for the heating medium supply system is provided with the heating medium charging operation command means, it is sufficient to simply provide the heating medium charging operation command means in the mixing unit. , As compared with those that provide a heat medium charging operation command means in a remote control or a heat source device,
The configuration becomes easy.

According to the fourth aspect of the present invention, there is provided a heat medium detecting means for detecting the presence of a heat medium at a place where the heat load side circulation means is provided in the heat medium circulation path, The control means, in the heat medium filling process, first, circulating the circulating means and operating the mixing means in the bypass path closed state, when the heat medium detecting means detects the heat medium And circulating the heat load side circulating means.

That is, if the heat load side circulating means such as a pump is operated in a state where the heat medium does not exist at the place where the heat load side circulating means is installed, the heat load side circulating means is damaged, and the heat load side circulating means is damaged. There is a problem that the life of the circulation means is shortened. However, if it is detected based on the detection information of the heat medium detection means that the heat medium is present at the installation location of the heat load side circulation means, Since the load-side circulating means is circulated, it is possible to circulate the heat-load-side circulating means in a state where the heat medium is always present at the installation location of the heat-load-side circulating means. The service life can be extended.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat medium supply system according to the present invention will be described with reference to the drawings. This heating medium supply system
As shown in FIGS. 1 and 2, a floor heating panel 1 as a heat load, and a heat medium circulation path 2 connected to the floor heating panel 1
Heat source unit 4 having a circulating means or the like for circulating the heat medium through the heat source, and a mixing ratio of the return heat medium from the bypass 3 provided at an intermediate point of the heat medium circulating path 2 to the heat medium from the heat source unit 4 A mixing unit 5 including mixing means 9 for adjusting the
A remote control operation unit 7 for instructing the control means 6 for managing the heat medium circulation operation to issue an operation command is provided.

The operation of the mixing unit 5 is controlled by the unit-side control means 8, and the mixing unit 5 receives the return heat medium of the return-side circulation path portion 2b in the heat-medium circulation path 2 and passes the return-side circulation path portion 2b.
and a mixing valve as mixing means for adjusting the mixing ratio of the return heat medium from the bypass path 3 and the heat medium from the heat source unit 4 to a part of the circulation path portion 2c in which the bypass flow path 3 for allowing the bypass flow to flow is provided. 9 and the mixing valve 9
A heat load side circulation pump 10 or the like is provided as heat load side circulation means for circulating the mixed heat medium mixed in the heating medium circulation path 2 and the bypass path 3 to the floor heating panel 1. Further, the mixing unit 5 is provided with a thermistor 11 as a heat medium detecting means for detecting the temperature of the mixed heat medium mixed by the mixing valve 9.
, A mixing valve 9, a thermistor 11, and a heat load side circulation pump 10 are provided in this order from the heat source device 4 side, and the heat transfer medium of the floor heating panel 1 side with respect to the heat load side circulation pump 10 is provided. A unit bypass passage 12 is provided that allows a part of the flow to flow through the return-side circulation path portion 2b closer to the heat source device 4 than the connection point between the bypass path 3 and the return-side circulation path portion 2b.

The mixing valve 9 will be described in more detail. Although not shown in detail, the mixing valve 9 operates a valve body by operating a stepping motor 13 so that the flow of the return heat medium from the bypass passage 3 is controlled. The opening degree of the inlet and the inflow port of the outgoing heat medium from the heat source unit 4 is adjusted to adjust the mixing ratio of the return heat medium from the bypass passage 3 and the outgoing heat medium from the heat source unit 4. As shown in FIG. 3, by changing the number of steps of the stepping motor 13, the mixing ratio between the return heat medium from the bypass path 3 and the heat medium from the heat source unit 4 is changed. In FIG. 3, the low-temperature water side is a return heat medium from the bypass passage 3, and the high-temperature water side is a forward heat medium from the heat source unit 4.

As shown in FIG. 4, the operation of the heat source unit 4 is controlled by a heat source unit side control unit 14, and a replenishing water tank 15 as a replenishing unit, a heat exchanger 17 as a heating unit 16, and a heat exchanger Burner 1 for heating exchanger 17
8. A circulating pump 19 as a circulating means is provided. The heat medium return path 20 connected to the return side circulation path portion 2b of the heat medium circulation path 2 is connected to the inlet side of the makeup water tank 15 and connected to the outgoing side circulation path portion 2a of the heat medium circulation path 2. A heat medium passage 21 is connected to the outlet side of the heat exchanger 17, and a heat medium communication passage 22 that communicates the outlet side of the makeup water tank 15 and the inlet side of the heat exchanger 17 is provided.
A circulation pump 19 is provided at an intermediate position of the heat medium communication passage 22.

A heat source device bypass passage 23 for allowing the heat medium flowing through the heat medium return passage 21 to flow by bypass to the heat medium return passage 20.
The heat medium return path 20 is provided with a heat medium return thermistor 24 for detecting the temperature of the heat medium flowing through the heat medium return path 20, and the heat medium return path 21 is provided with a heat medium return path 21. A heat medium transfer thermistor 25 for detecting the temperature of the flowing heat medium is provided. A tank water supply path 26 for supplying water to the makeup water tank 15 is provided with a makeup water valve 27 and a makeup water solenoid valve 28. The makeup water tank 15 has an upper limit sensor 29 for detecting the upper limit of the water level, A lower limit sensor 30 for detecting the lower limit is provided, and the make-up water valve 27 and the make-up water electromagnetic device are controlled by the heat source device side control means 14 so that the water level of the make-up water tank 15 is maintained at a level between the upper limit sensor and the lower limit sensor. The valve 28 is configured to be controlled. In addition,
The overflow path 31 is also connected to the makeup water tank 15.

A fuel supply passage 32 for supplying a fuel gas to the burner 18 has an electromagnetically operated on-off valve 33 for interrupting the supply of fuel, and an electromagnetically operated valve for changing and adjusting the fuel supply amount (burning amount of the burner 18). Is provided, and a fan 35 for supplying combustion air to the burner 18 is also provided.
An igniter 36 for executing an ignition operation for the burner 18 and a frame rod 37 for detecting whether or not the burner 18 is ignited are provided near the burner 18, respectively.

An operation switch 38 for instructing a heating medium circulation operation, a temperature setting switch 39 for setting the indoor temperature of the floor heating panel 1, an indoor temperature set by the temperature setting switch 39, and the like are provided in the remote control operating section 7. Display unit 40 to display
And so on. Further, on the substrate of the unit-side control means 8, a water filling switch 41 is provided as a heat medium charging operation command means for commanding a heat medium charging operation.

The control means 6 comprising the unit-side control means 8 and the heat-source-unit-side control means 14,
When the heat medium circulation operation is instructed by pressing the operation switch 38 of the remote control operation unit 7, the circulation pump 19 and the heat load side circulation pump 10 are circulated, and the temperature of the heat medium flowing from the heat source unit 4 is reduced The heating unit 16 is configured to perform a heating operation so as to reach the supply temperature, and to perform a heating medium circulation process in which the mixing valve 9 is mixed and operated so that the temperature of the mixed heating medium becomes the target temperature for heat load. ing. Further, the control means 6 controls the O
When the heat medium charging operation is commanded by the N operation, the circulation pump 19 and the heat load side circulation pump 10 are circulated,
The heating unit 16 is heated so that the temperature of the heat medium flowing from the heat source unit 4 becomes the temperature for supplying the heat source, and the bypass passage 3 is in a closed state (full open) where there is no flow of the heat medium through the bypass passage 3 or close thereto. In the state (state), a heating medium charging process for operating the mixing valve 9 is executed.

The heat medium circulating process will be described in further detail. When the heat medium circulating operation is instructed, the control means 6 closes the bypass passage without or near the flow of the heat medium through the bypass passage 3. While gradually operating the mixing valve 9 in the state (full open state), the circulation pump 19 is circulated to heat the heating medium from the heat source unit 4 to the temperature of the heat source supply temperature (for example, 80 ° C.). Means 16
Is performed, and the temperature detected by the thermistor 11 becomes equal to or higher than the set temperature for operation (for example, 54 ° C.),
When the heat medium is detected at the installation location of the heat load side circulation pump 10, the operation of the heat load side circulation pump 10 is executed. When the set time elapses after the heat medium circulation operation is commanded and the room temperature set by the remote control operation unit 7 is in a low temperature state, the temperature of the mixed heat medium becomes the target temperature for heat load (for example, 56 ° C.). 〜64 ° C.) to perform the mixing operation of the mixing valve 9.

That is, in the heating medium circulation operation, FIG.
As shown in the figure, the heat medium coming out of the heat source unit 4 is mixed with the heat medium returned from the bypass path 3 by the mixing valve 9 and the heat medium circulation path 2 and the bypass path are The heat medium is circulated and supplied to the floor heating panel 1 through 3. Note that a part of the heat medium flowing in the outgoing side circulation path portion 2a in the mixing unit 5 can flow to the heat source device 4 through the unit bypass path 12, and a part of the return side circulation path portion 2b in the mixing unit 5 can be used. The heat source device 4 can flow to the heat source device 4 through the return side circulation path portion 2b.

When the operation switch 38 of the remote control operation unit 7 is pressed again, the circulation operation of the circulation pump 19 and the heating operation of the heating means 16 are stopped, and the heat source unit 4 is turned off.
Is stopped, and the heat medium circulation path is closed (fully closed state) where the flow of the heat medium flowing out of the heat source unit 4 is absent or close to it.
The mixing valve 9 is operated in advance, and the temperature detected by the thermistor 11 is set to a set temperature for stopping (for example, 60 ° C.).
(° C.) or less, a heat medium circulation process stop process for stopping the circulation operation of the heat load side circulation pump 10 is executed.

The heating medium filling process will be described. The heating medium filling process is performed in the makeup water tank 15 of the heat source unit 4.
Is performed when the water level is between the upper limit sensor 29 and the lower limit sensor 30. When the heat medium filling operation is commanded, the control means 6 first causes the circulation pump 19 to circulate, The heating means 16 is heated so that the temperature of the heat medium flowing from the heat source unit 4 becomes the heat source supply temperature (for example, 80 ° C.), and the heat medium does not flow through the bypass 3 or is close to it. The mixing valve 9 is operated in the bypass path closed state (fully opened state), and the temperature detected by the thermistor 11 becomes equal to or higher than the operation set temperature (for example, 54 ° C.). When the heat medium is detected, the heat load side circulation pump 10 is operated.

In this embodiment, in the heating medium charging operation, the heating means 16 is operated to heat the heating medium from the heat source unit 4 so that the temperature of the heat medium reaches the target temperature for supplying the heat source. The water in the makeup water tank 15 may be filled into the floor heating panel 1 and the heat medium circulation path 2 from the heat source unit 4 without heating the means 16.

That is, in the heating medium charging operation, FIG.
As shown in (2), the mixing valve 9 is operated in a closed state (full open state) of the bypass path where there is no flow of the heat medium through the bypass path 3 or close to the flow path, so that the entire amount of the heat medium supplied from the heat source unit 4 is mixed. 9, the heat medium from the heat source unit 4 is filled with the heating medium in the floor heating panel 1 and the heat medium circulation path 2 by flowing the flow more accurately to the circulation path portion 2a on the floor heating panel 1 side than the floor heating panel 9. become.

As described above, in the heating medium filling operation for filling the heating medium into the floor heating panel 1 and the heating medium circulation path 2, there is no flow of the heating medium through the bypass path 3, or the bypass path is in a closed state (close to this). When the mixing valve 9 is operated in the fully opened state, the entire amount of the heat medium supplied from the heat source unit 4 is caused to flow more accurately to the outgoing side circulation path portion 2a on the floor heating panel 1 side than the mixing valve 9, so that the heat load and It has become possible to provide a heat medium supply system that can reliably and quickly fill the heat medium circulation path with the heat medium.

In the heat medium circulation operation and the heat medium charging operation, the temperature detected by the thermistor 11 becomes higher than the set temperature for operation (for example, 54 ° C.), and the heat medium is supplied to the heat load side circulation pump 10 at the installation position. When it is detected, by operating the heat load side circulation pump 10, the heat load side circulation pump 10 can always be operated in the state where the heat medium is present, and the heat load side circulation pump is By circulating the pump 10 to prevent the heat load side circulation pump 10 from being damaged, the heat load side circulation pump 10
Can be maintained for a long time. Incidentally, since the heat medium is replenished to the location of the circulation pump 19 in the heat medium communication passage 22 by the makeup water tank 15, the circulation pump is provided in a state where the heat medium is present in the location of the circulation pump 19 in the heat medium communication passage 22. 19 is circulated, and the circulation pump 1
By preventing the idle operation of the circulation pump 9, the life of the circulation pump 19 can be maintained long.

Then, the set time for stoppage has elapsed since the heat medium charging operation was commanded, or the water filling switch 4
1 is turned off, the circulating operation of the circulating pump 19 and the heating operation of the heating means 16 are stopped to stop the operation of the heat source unit 4, and the flow of the heat medium flowing from the heat source unit 4 is almost or no. When the detected temperature of the thermistor 11 becomes equal to or lower than the stop temperature, the mixing valve 9 is operated in the medium circulation path closed state (fully closed state), and the heat medium for stopping the circulation operation of the heat load side circulation pump 10 is stopped. It is configured to execute a stop process of the filling process.

The unit-side control means 8 is connected to the remote control operation unit 7 so as to be capable of bidirectional communication.
When the instruction of the heat medium circulation operation is issued from the controller, the operation of the mixing unit 5 is managed, and the instruction of the heat medium circulation operation is relayed to the heat source device side control means 14 to be commanded. When the heating medium filling operation is instructed by the water filling switch 41 provided on the substrate of the means 8, the operation of the mixing unit 5 is managed and the heating medium filling operation is instructed to the heat source device side control means 14. Have been. When the detected temperature of the thermistor 11 becomes equal to or higher than the set temperature based on the instructions of the heat medium circulation operation and the heat medium charging operation, the unit-side control unit 8 detects the heat medium at the installation location of the heat load-side circulation pump 10. Circulating the heat load side circulating pump 10 and controlling the mixing operation of the mixing valve 9 so as to adjust the mixing ratio of the return heat medium from the bypass passage 3 and the heat medium from the heat source unit 4. It is configured.

The mixing operation of the mixing valve 9 will be described. When the heat medium circulation operation is instructed, the flow path of the heat medium does not flow through the bypass path 3 or is close to the flow path. ), The number of steps of the stepping motor 13 is gradually changed. That is, by gradually changing the number of steps of the stepping motor 13 so that the flow path of the heat medium through the bypass path 3 does not flow or close to the bypass path 3 (full open state), rapid opening and closing of valves and gas Abnormal pressure caused by mixing of water, that is, water hammer is prevented.

When the set time elapses after the heat medium circulation operation is commanded and the room temperature set by the remote control operation unit 7 is low, the temperature of the mixed heat medium becomes the target temperature for heat load (for example, , 54 ° C. to 64 ° C.), the number of steps of the stepping motor 13 is adjusted based on the temperature detected by the thermistor 11. When the heat medium filling command is issued, the number of steps of the stepping motor 13 is changed so that the flow of the heat medium through the bypass path 3 is closed or the bypass path is closed (closed state). ing.

The heat source unit control means 14 circulates the circulating pump 19 based on a command from the remote control operation unit 7 relayed by the unit side control means 8 and performs the heat transfer from the heat source unit 4. The heating means 16 is configured to perform a heating operation such that the temperature of the heating means 16 becomes the heat source supply target temperature. By the way, the heat source device side control means 4

The heating operation of the heating means 16 will be described in more detail. The ventilation operation by the fan 35 is started, and the intermittent valve 33 is opened to open the gas amount adjusting valve 34 so that the ignition gas amount becomes equal to the ignition gas amount. While adjusting the valve, the burner 18 was ignited by the igniter 36 and the flame rod 37
Confirm by After that, based on the amount of circulation by the circulation operation of the circulation pump 19, the detection information of the heat medium return thermistor 24, and the detection information of the heat medium going thermistor 25,
The combustion amount of the burner 18 is adjusted so that the temperature of the heat medium going from the heat source unit 4 becomes the target temperature for heat source supply (for example, 80 ° C.).

The heat medium circulation operation and the heat medium charging operation of the control means 6 will be described with reference to the flowcharts of FIGS. First, the heat medium circulating operation will be described. When the operation switch 38 of the remote control operation unit 7 is pressed and the heat medium circulating operation is commanded, the circulation pump 19 is circulated as shown in FIG. The means 16 is heated to start the operation of the heat source unit 4, and the mixing valve 9 is gradually operated to close the bypass path (fully open state) where there is no or near the flow of the heat medium through the bypass path (step 1). ). When the temperature detected by the thermistor 11, that is, the thermistor temperature becomes equal to or higher than the set temperature for operation (for example, 54 ° C.), the heat load side circulating pump 10
When a set time (for example, 30 minutes) elapses after the heat medium circulation operation is commanded and the room temperature set by the remote control operation unit 7 is in a low temperature state, the temperature of the mixed heat medium is reduced. Is the target temperature for heat load (for example, 54
(° C. to 64 ° C.) to perform mixing and mixing operation (steps 2 to 6).

In this way, the outgoing heat medium from the heat source unit 4 and the return heat medium from the bypass path 3 are mixed by the mixing valve 9.
Is supplied to the floor heating panel 1 to heat the room, but the operation switch 38 of the remote control operation unit 7 is pressed again to stop the heat medium circulation operation. When instructed, the circulation operation of the circulation pump 19 and the heating operation of the heating means 16 are stopped to stop the operation of the heat source unit 4, and the heat medium circulation path in which the heat medium flowing from the heat source unit 4 does not flow or is close thereto The mixing valve 9 is operated in the closed state (fully closed state) (steps 7 and 8).
Then, when the temperature detected by the thermistor 1, that is, the thermistor temperature becomes equal to or lower than the set temperature for stopping (for example, 60 ° C.), the circulating operation of the heat load side circulating pump 10 is stopped (steps 9, 10).

Next, the heat medium filling process will be described.
When the water filling switch 41 is turned on and the heat medium filling operation is commanded, the circulation pump 19 is operated to circulate, the heating means 16 is operated to heat, the operation of the heat source device 4 is started, and the heat passing through the bypass passage is started. The mixing valve 9 is operated in a bypass path closed state (full open state) where there is no flow of the medium or close to it (step 11). And thermistor 11
When the detected temperature, i.e., the thermistor temperature, becomes equal to or higher than the set temperature for operation (for example, 54 ° C.), the heat load side circulation pump 10 is operated (steps 12 and 13).

In this manner, the heating medium is filled into the floor heating panel 1 and the heating medium circulation path 2 in a closed state (full open state) of the heating medium through or without the flow of the heating medium through the bypass path. When the set time for stopping (for example, 20 minutes) elapses after the filling operation is commanded, or when the water filling switch 41 is turned off and a command to stop the heating medium filling command is issued, the circulation of the circulation pump 19 is performed. The operation of the heat source unit 4 is stopped by stopping the operation and the heating operation of the heating means 16, and the mixing valve is set to a closed state (fully closed state) of the heat medium circulation path in which the flow of the heat medium from the heat source apparatus 4 does not flow or close thereto. 9 is operated (steps 14 and 15). When the temperature detected by the thermistor 11, that is, the thermistor temperature becomes equal to or lower than the set temperature for stopping (for example, 60 ° C.),
The circulation operation of the heat load side circulation pump 10 is stopped (steps 16 and 17).

[Other Embodiments] (1) In the above embodiment, the mixing valve 9 and the heat load side circulation pump 10 are integrally provided as the mixing unit 5, but the mixing valve 9 and the heat load side circulation pump are provided. It is also possible to separately implement 10 and the like.

(2) In the above embodiment, the water filling switch 41 is provided in the mixing unit 5 as the heat medium filling operation command means, but the remote control operation unit 7 and the heat source unit 4
It is also possible to provide the heat source device side control means 14 on the substrate.

(3) In the above embodiment, in the heating medium circulation operation and the heating medium charging operation, the temperature detected by the thermistor 11 becomes higher than the set temperature for operation, and the heat load side circulation pump 10
When a heat medium is detected at the installation location of the heat load side circulation pump 1
However, when the heat medium circulation operation and the heat medium charging operation are commanded, the heat load side circulation pump 10 may be operated in circulation, or the heat load side circulation pump 10 may be operated.
Can be changed.

(4) In the above embodiment, the mixing unit 5
The unit-side control means 8 for managing the operation of the heat source unit 4 and the heat source unit-side control means 14 for managing the operation of the heat source unit 4 are provided separately. For example, the operation of the heat source unit 4 and the mixing unit 5 are managed. It is also possible to implement by providing the control means 6.

[Brief description of the drawings]

FIG. 1 is an overall schematic configuration diagram of a heat medium supply system.

FIG. 2 is an overall schematic configuration diagram of a heat medium supply system.

FIG. 3 is a diagram showing the number of steps and the mixing ratio of a stepping motor in a mixing valve.

FIG. 4 is an overall schematic configuration diagram of a heat source unit.

FIG. 5 is a flowchart showing the operation of the control means in the heat medium circulation operation.

FIG. 6 is a flowchart showing the operation of the control means in the heating medium charging operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat load 2 Heat medium circulation path 3 Bypass path 4 Heat source unit 5 Mixing unit 6 Control means 9 Mixing means 10 Heat load side circulation means 11 Heat medium detection means 15 Replenishment means 16 Heating means 19 Circulation means 41 Heat medium filling operation command means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasushi Nakagawa 1-15-1 Oka, Minami-shi, Minato-ku, Osaka, Osaka Prefecture Inside Herman Co., Ltd. (72) Kazuyuki Morimoto 1-1-52, Oka, Minami-shi, Minato-ku, Osaka, Osaka No. Harman Co., Ltd. F-term (reference) 3L070 AA02 BB03 BB18 DF07 DG07

Claims (4)

[Claims] 1. A circulation means for circulating a heat medium through a heat medium circulation path connected to a heat load, a heating means for heating the heat medium, and a replenishment for automatically replenishing the heat medium circulation path with the heat medium. A heat source device provided with a means is provided.A midway portion of the heat medium circulation path is provided with a bypass path for allowing the return heat medium of the return side circulation path portion to bypass-flow to the outgoing side circulation path portion. Mixing means for adjusting the mixing ratio of the return heat medium and the heat medium coming from the heat source unit; and circulating the mixed heat medium mixed by the mixing means to the heat load through the heat medium circulation path and the bypass path. A heat load side circulating means for controlling the heat medium circulating operation, and a control means for managing the heat medium circulating operation. When the heat medium circulating operation is instructed, the control means circulates the circulating means and the heat load side circulating means. From the heat source unit. A heating medium circulating unit that heats the heating unit so that the temperature of the heating medium reaches the target temperature for supplying heat source, and mixes the mixing unit so that the temperature of the mixed heating medium reaches the target temperature for heat load. A heat medium supply system configured to execute a process, wherein the control means is configured to: when a heat medium filling operation for filling the heat load and the heat medium circulation path with a heat medium is commanded, the circulation means And circulating the heat load side circulating means, and executing a heat medium charging process for operating the mixing means in a bypass path closed state where the heat medium does not flow through or close to the bypass path. Heating medium supply system. 2. A part of the heat medium circulation path in which the bypass path is provided, the mixing means, and the heat load side circulation means are integrally provided as a mixing unit. The heat medium supply system according to claim 1. 3. The heat medium supply system according to claim 2, wherein the mixing unit is provided with a heat medium charging operation command means for commanding the heat medium charging operation. 4. A heating medium detecting means for detecting the presence of a heating medium at a place where the heat load side circulation means in the heating medium circulation path is provided, wherein the control means performs the heating medium charging process. First, circulating the circulating means and operating the mixing means in the closed state of the bypass passage are performed, and when the heat medium detecting means detects the heat medium, the heat load side circulating means is circulated. The heat medium supply system according to any one of claims 1 to 3, wherein the heat medium supply system is configured to perform the actuation.