JP5628722B2 - Heat medium supply facility and operation control method thereof - Google Patents

Description

  The present invention relates to a heat medium heating passage in which a high-temperature heating medium passage provided with a high-temperature heating terminal capable of high-temperature heating operation allows a heating medium to flow through a heating means capable of heating the heating medium. A low-temperature heating medium flow path provided with a low-temperature heating terminal capable of low-temperature heating operation is provided in a state connected to the outlet for heating medium delivery and the inlet for returning the heating medium, the heating medium heating flow Provided in a state of being connected to a flow path portion between the heat medium return inlet and the heating means in the passage and the heat medium return inlet, and intermittently supplying the heat medium to the high temperature heating terminal or High temperature side heat medium flow adjusting means for adjusting the opening degree of the high temperature heat medium flow path so as to adjust, and the low temperature heat medium flow path so as to intermittently or adjust the heat medium supply to the low temperature heating terminal And a low temperature side heat medium flow adjusting means for adjusting the opening degree of the heat medium.

  The above is a so-called two-temperature control type heat medium supply facility, which circulates and supplies the heat medium to the high temperature heating terminal and the low temperature heating terminal to perform high temperature heating and low temperature heating. Generally, a high-temperature heating terminal is composed of a bathroom drying heating device, a fan convector, or the like, and performs high-temperature heating using warm air with hot water of about 80 ° C. The low-temperature heating terminal is composed of a floor heating device, a panel radiator, etc., and performs low-temperature heating by radiant heat using hot water of about 60 ° C. In such a heat medium supply facility, in order to use the amount of heat of the heat medium for heating, heating is performed by circulating a heat medium that has been heated to high temperature to a demand point to be heated (for example, see Patent Document 1).

JP 2009-216288 A

In order to circulate a high-temperature heat medium to a demand location to be heated, the above-described heat medium supply facility includes a heat medium flow path (for example, a pipe) that is a flow path for circulating the heat medium to the demand location, Heat medium circulation means (for example, a circulation pump), which is a power source for circulating the medium to the demand point, is provided.
However, the above-described heat medium supply equipment has been used only for heating so far, although it includes a heat medium passage and a heat medium circulation means for circulating the heat medium to a demand location.

  Therefore, in order to make effective use of the equipment, a cooling circuit including a low-temperature heat source is incorporated in the above-mentioned heat medium supply equipment, and switching between heating operation and cooling operation is possible. It is conceivable to use the facility not only for heating operation but also for cooling operation by circulating the heat medium to the demand point.

However, simply connecting a cooling circuit to the above heat medium supply equipment and circulating a cold heat medium in the heat medium flow path will cause condensation, resulting in metal corrosion, etc. There is a risk of accelerating performance degradation and reducing the durability of the equipment.
In particular, the heating means provided in the heat medium heating passage (for example, composed of a heat exchanger, a burner, and a blower) is usually configured with high thermal conductivity in order to increase heating and heat dissipation efficiency. Therefore, for example, when there is a rapid decrease in temperature, such as switching from a high-temperature heat medium to a cold heat medium, condensation tends to occur, resulting in deterioration in equipment performance and durability. Is concerned.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heating medium supply facility capable of heating operation and cooling operation by circulating a high-temperature or cold-heating medium. . Moreover, in such an installation, it is in the point which prevents dew condensation and prevents the fall of the durability of an installation.

In order to achieve this object, the heating medium supply facility according to the present invention is:
For heating medium delivery in the heating medium heating passage where the heating medium passage having a high temperature heating terminal capable of high temperature heating operation passes the heating medium through a heating means capable of heating the heating medium. Connected to the outlet and the heat medium return inlet,
The low-temperature heating medium flow path provided with a low-temperature heating terminal capable of low-temperature heating operation includes a flow path portion between the heating medium return inlet and the heating means in the heating medium heating flow path and the heat. It is provided in a state connected to the inlet for medium return,
High temperature side heat medium flow adjusting means for adjusting the opening degree of the high temperature heat medium flow path so as to intermittently or adjust the supply of the heat medium to the high temperature heating terminal, and intermittent heating medium supply to the low temperature heating terminal Or a low temperature side heat medium flow adjusting means for adjusting the opening of the low temperature heat medium flow channel so as to adjust, the first characteristic configuration,
Cooling operation is possible in the low temperature heating terminal,
A heating medium cooling passage for allowing the heating medium to flow through a cooling means capable of cooling the heating medium is provided between the low temperature heating terminal and the heating medium return inlet in the low temperature heating medium passage. In the flow path portion, the cooling side state connected to the low temperature heat medium flow path as a heat medium flow path connecting the low temperature heating terminal and the heat medium return inlet by the flow path switching means, The heating side state separated from the low temperature heat medium passage is provided in a switchable state,
Based on the operation state required for the high temperature heating terminal and the low temperature heating terminal, the high temperature side heat medium flow adjustment means, the low temperature side heat medium flow adjustment means, and the flow path switching means are operated. The control means for controlling is provided.

According to this characteristic configuration, the heat medium cooling passage that allows the heat medium to flow through the cooling means that can cool the heat medium includes the low temperature heating terminal provided in the low temperature heat medium passage and the heat medium return. In the flow channel portion between the first and second inlets, it is connected to the low-temperature heat medium flow channel via the flow channel switching means.
Then, the cooling medium side is connected to the low-temperature heat medium flow path by the flow path switching means, and the heat medium is cooled via the cooling means and then flows to the heat medium return inlet. The state and the heating medium cooling passage are separated from the low-temperature heating medium passage and are switched between a heating side state in which the heating medium is allowed to flow to the inlet for returning the heating medium without cooling.
Therefore, the control means operates the high-temperature side heat medium flow adjusting means, the low-temperature side heat medium flow adjusting means, and the flow path switching means based on the operation state required for the high temperature heating terminal and the low temperature heating terminal. By controlling, a heat medium flow circuit suitable for the operation state can be configured.

  That is, in the heating medium supply facility, when the heating operation is performed, the control unit switches the flow path switching unit to the heating side state. As a result, it is possible to configure a circuit in which the heat medium cooling passage is separated from the low temperature heat medium passage and flows to the heat medium return inlet without cooling the heat medium. That is, the high temperature heating medium heated in the heating means of the heating medium heating passage is circulated through the high temperature heating medium passage and the low temperature heating medium passage without passing through the heating medium cooling passage. Can be made. Thereby, high temperature heating operation and low temperature heating operation, and high temperature low temperature simultaneous heating operation can be performed similarly to the conventional heat-medium supply equipment.

On the other hand, when performing the cooling operation, the control means switches the flow path switching means to the cooling side state and closes the high temperature side heat medium flow adjustment means.
By switching the flow path switching means to the cooling side state, the heat medium cooling flow path is connected to the low temperature heat medium flow path. Thus, the heat medium passes through the cooling means in the heat medium cooling passage, is cooled by the cooling means, and flows to the low-temperature heat medium passage as a cold heat medium. Then, the cooling operation is performed at the low temperature heating terminal by the cold heat medium.
In addition, since the high temperature side heat medium flow adjusting means is closed, circulation of the heat medium to the high temperature heat medium flow path and the heat medium heating flow path is prevented. Thereby, in the heating means provided in the heat medium heating passage, it is possible to prevent the occurrence of condensation due to a rapid temperature drop due to the flow of the cold heat medium. In addition, since the pressure drop due to the internal circulation of the heat medium through the heat medium can be suppressed by closing the high temperature heat medium flow path and the heat medium heating flow path, the heat medium circulation means required for the heat medium circulation It is possible to easily secure the head.

  As described above, according to this characteristic configuration, heating operation and cooling operation can be performed by circulating a high-temperature or low-temperature heat medium using a heat medium passage for circulating the heat medium to a demand point. A heating medium supply facility can be provided. Further, during cooling operation, the circulation of the circulating medium to the high-temperature heating medium passage and the heating medium heating passage is closed to prevent the heating medium from flowing into the heating medium heating passage. Thereby, it is possible to prevent condensation in the heating means that is particularly likely to cause condensation, and to prevent deterioration in equipment performance and durability.

The second feature configuration of the heat medium supply facility according to the present invention is the first feature configuration,
A flow path portion between the heating means in the heat medium heating flow path and the heat medium delivery outlet in the heat medium heating flow path; and for returning the heat medium in the heat medium heating flow path. A bypass path is provided to connect the inlet and the flow path portion between the connection point of the low temperature heat medium flow path in the heat medium heating flow path,
Bypass path opening and closing means for opening and closing the bypass path so as to interrupt the flow of the heat medium in the bypass path is provided,
The control means controls the operation of the bypass path opening / closing means based on the operating state.

According to this characteristic configuration, the bypass path is provided to connect the flow path portion for sending the heat medium in the heat medium heating flow path and the flow path section for returning the heat medium in the heat medium heating flow path. And the bypass path opening-and-closing means which opens and closes the bypass path so that the flow of the heat medium in the bypass path is interrupted is provided, and the control means is based on the operation state required for the high temperature heating terminal and the low temperature heating terminal. The operation of the bypass path opening / closing means is controlled.
That is, the heat medium sent from the outlet for heat medium delivery in the heat medium heating passage does not go through the high temperature heating medium passage provided with the high-temperature heating terminal, and the heat medium in the heat medium heating passage. A bypass path is provided to allow flow to the return inlet. The opening / closing operation of the bypass path opening / closing means for interrupting the flow of the heat medium passing through the bypass path is controlled by the control means.

  According to such a configuration, the heat medium flows through the high temperature heat medium flow path by opening the bypass path opening / closing means and closing the high temperature side heat medium flow adjustment means by the control means. A closed circuit that can be circulated without any problems can be configured. Thereby, the heat medium is circulated only through the heat medium heating passage and the bypass passage and radiated by the heating means provided in the heat medium heating passage, or the high temperature heat medium passage is passed through. It is possible to circulate the low-temperature heat medium passage and use it for low-temperature heating at a low-temperature heating terminal.

  A third characteristic configuration of the heat medium supply facility according to the present invention is that, in the second characteristic configuration, the bypass path opening / closing means is provided so as to freely adjust a flow rate of the heat medium flowing through the bypass path. .

According to this characteristic configuration, the bypass path opening / closing means is provided so as to freely adjust the flow rate of the heat medium flowing through the bypass path. Thus, when high-temperature heating is performed at the high-temperature heating terminal, the flow rate of the heat medium flowing through the high-temperature heating terminal is adjusted by adjusting the flow rate of the heat medium flowing through the bypass path by the bypass-path opening / closing means. By adjusting, it is possible to adjust the amount of heat of the heat medium flowing through the high temperature heating terminal and adjust the heating capacity of the high temperature heating by the high temperature heating terminal.
Similarly, when performing high-temperature and low-temperature simultaneous heating operation, by adjusting the flow rate of the heat medium flowing through the bypass path, the amount of heat of the heat medium flowing through the high-temperature heating terminal and the low-temperature heating terminal is adjusted, It is possible to adjust the heating capability of the high-temperature heating in the high-temperature heating terminal and the heating capability of the low-temperature heating in the low-temperature heating terminal.

  The first characteristic configuration of the operation control method of the heat medium supply facility according to the present invention is the heat medium supply facility having the first characteristic configuration, wherein when the cooling operation is requested to the low temperature heating terminal, the control means The low temperature side heat medium flow adjustment means is in the open state, the high temperature side heat medium flow adjustment means is in the closed state, and the flow path switching means is in the cooling side state, The cooling operation control in which the cooling operation is performed at the low-temperature heating terminal by circulating the passage and the heat medium cooling passage is provided.

According to this characteristic configuration, in the heat medium supply facility having the first characteristic configuration, when the low temperature heating terminal is requested to perform a cooling operation, the control means is in a state where the low temperature side heat medium flow adjustment means is in an open state. With the side heat medium flow adjustment means closed and the flow path switching means set to the cooling side state, the heat medium is circulated between the low temperature heat medium flow path and the heat medium cooling flow path at the low temperature heating terminal. Let the air conditioning run. That is, the circulation flow to the heating medium heating passage and the high-temperature heating medium passage is closed, and the heating medium is cooled in a state where it is circulated through the closed circuit including the low temperature heating medium passage and the heating medium cooling passage. Driving is performed.
By closing the circulation flow to the heating medium heating passage, the cold heating medium cooled by the cooling means is prevented from circulating through the heating means provided in the heating medium heating passage. The Thereby, the dew condensation in a heating means can be prevented, and the deterioration of the performance of an installation and the fall of durability can be prevented.

  In addition, since the circulation flow of the heat medium to the heating medium heating passage and the high temperature heating medium passage is closed, the heating medium flows through the high temperature heating medium passage and the heating medium heating passage. Without being circulated, it circulates through a closed circuit composed of a low-temperature heat medium passage and a heat medium cooling passage. Thereby, the pressure drop due to the internal circulation of the heat medium through the equipment can be suppressed, so that it is easy to secure the head of the heat medium circulation means necessary for the circulation of the heat medium.

  The second characteristic configuration of the operation control method for the heat medium supply facility according to the present invention is the case where the cooling operation is required for the low-temperature heating terminal in the heat medium supply facility including either the second or third characteristic configuration. The control means has the low temperature side heat medium flow adjustment means open, the high temperature side heat medium flow adjustment means closed, the flow path switching means in the cooling state, and the bypass path opening and closing means. In the closed state, the heat medium is circulated through the low-temperature heat medium passage and the heat-medium cooling passage, and the cooling operation control for performing the cooling operation at the low-temperature heating terminal is performed.

  According to this characteristic configuration, in the heat medium supply facility provided with either the second or the third characteristic configuration, when the low temperature heating terminal is requested to perform a cooling operation, the low temperature side heat medium flow is supplied to the control means. With the adjustment means in the open state, the high temperature side heat medium flow adjustment means in the closed state, the flow path switching means in the cooling side state, and the bypass path opening / closing means in the closed state, the heat medium is heated with the low temperature heat medium flow path. In order to circulate through the cooling medium passage and allow the low temperature heating terminal to perform the cooling operation, the low temperature heating medium is connected to the circulation path of the cold heating medium cooled by the cooling means provided in the heating medium cooling passage. It can be limited to a closed circuit comprising a flow path and a heat medium cooling flow path. Thereby, in a heat medium supply facility provided with a bypass path in the high-temperature heat medium passage, it is possible to prevent the heat medium from flowing through the heat medium heating passage and prevent condensation in the heating means. As a result, it is possible to prevent the deterioration of the performance and durability of the equipment due to condensation.

  A third characteristic configuration of the operation control method of the heat medium supply facility according to the present invention is the operation control method including the second characteristic configuration, wherein when the cooling operation is requested to the low temperature heating terminal, the control means includes Before performing the cooling operation control, the low temperature side heat medium flow adjusting means and the high temperature side heat medium flow adjusting means are closed, and the bypass path opening / closing means is opened, The heat radiating operation is controlled by circulating the heat medium heating passage through the bypass and radiating heat by the heating means.

According to this characteristic configuration, in the operation control method having the second characteristic configuration, when the cooling operation is required for the low-temperature heating terminal, the low-temperature side heat medium flow is performed before the control means performs the cooling operation control. With the adjustment means and the high temperature side heat medium flow adjustment means closed, the flow path switching means in the heating state, and the bypass medium opening and closing means in the open state, the heat medium is passed through the bypass path Then, a heat radiation operation is performed in which the heat medium heating passage is circulated and heat is radiated by the heating means.
That is, in the operation control method having the second characteristic configuration, when the cooling operation is requested of the low temperature heating terminal, the heat radiation operation is performed prior to the cooling operation. Specifically, the low temperature side heat medium flow adjusting means and the high temperature side heat medium flow adjusting means are closed, and the flow of the heat medium to the low temperature heat medium flow path and the high temperature heat medium flow path is closed. At the same time, the flow path switching means is set to the heating side state and the bypass path opening / closing means is opened to connect the heat medium heating flow path and the bypass path to form a closed circuit. And heat dissipation operation | movement can be performed by circulating a heat medium through the said closed circuit, utilizing the heating means provided in the heat-medium heating flow path as a heat dissipation means. As described above, by performing the heat radiation operation prior to the cooling operation and previously dissipating the heat medium and setting the temperature to a low temperature, it is possible to shift to the cooling operation more smoothly.
Moreover, when the heating means is provided with a blower, the heat dissipation effect of the heat medium in the heat exchanger can be further enhanced by supplying the heat radiation air by the blower and cooling the heat exchanger. As a result, the blower can be used not only for supplying combustion air when heating the medium, but also for supplying heat when radiating the heat medium. be able to.

The fourth characteristic configuration of the operation control method of the heat medium supply facility according to the present invention is the heat medium supply facility including any one of the first to third characteristic configurations,
When the low temperature heating terminal is not required for operation and the high temperature heating terminal is required for high temperature single heating operation where high temperature heating operation is required, the high temperature side heat medium flow adjustment means is opened, the low temperature side With the heat medium flow adjustment means closed, and the flow path switching means in the heating side state,
When the high temperature heating terminal is not required for operation and the low temperature heating terminal is required for low temperature single heating operation where low temperature heating operation is required, the high temperature side heat transfer control means is closed, the low temperature side With the heat medium flow adjustment means in the open state and the flow path switching means in the heating side state,
When the high temperature heating terminal is required to perform a high temperature heating operation and the low temperature heating terminal is required to perform a high temperature / low temperature simultaneous heating operation, the high temperature side heat medium flow adjusting means and the low temperature side heat are required. With the medium flow adjustment means in the open state and the flow path switching means in the heating side state,
The heating means is controlled to circulate the heating medium heated by the heating means to perform the heating operation.

  According to this characteristic configuration, in the heat medium supply facility having any one of the first to third characteristic configurations, the operation of the high temperature side heat medium flow adjusting means, the low temperature side heat medium flow adjusting means, and the flow path switching means By appropriately controlling, not only the cooling operation but also the high temperature single heating operation, the low temperature single heating operation, and the high temperature low temperature simultaneous heating operation can be performed. Thereby, it is possible to provide a highly convenient operation control method for the heat medium supply facility capable of performing not only cooling operation but also high temperature heating operation, low temperature heating operation, and high temperature low temperature simultaneous heating.

Block diagram showing overall configuration of heating medium supply equipment Control flow diagram of heat medium supply equipment The figure which shows the circulation state of the heat medium at the time of high temperature independent heating operation The figure which shows the circulation state of the heat medium at the time of low temperature independent heating operation The figure which shows the circulation state of the heat medium at the time of high temperature low temperature simultaneous heating operation The figure which shows the circulation state of the heat medium at the time of heat radiation operation The figure which shows the circulation state of the heat medium at the time of air_conditionaing | cooling operation

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the heat medium supply facility includes a high-temperature heating terminal 1, a low-temperature heating terminal 2, a heat source machine G that circulates and supplies the heated heat medium to the high-temperature heating terminal 1 and the low-temperature heating terminal 2, and this heat medium supply. The main control unit C as a control means for controlling the operation of the equipment, the high temperature terminal control unit 3 for controlling the operation of the high temperature heating terminal 1, and various control information for operating the high temperature heating terminal 1 in the high temperature terminal control unit 3 The high temperature side operation unit 4 for instructing, the low temperature terminal control unit 5 for controlling the operation of the low temperature heating terminal 2, and the low temperature side operation unit 6 for instructing the low temperature terminal control unit 5 for various control information for operating the low temperature heating terminal 2 Etc. are provided.
Incidentally, as the high temperature heating terminal 1, for example, a bathroom heating / drying device or a fan convector is provided, and as the low temperature heating terminal 2, for example, a floor cooling / heating device or a panel radiator is provided. The low temperature heating terminal 2 is configured by a terminal capable of low temperature heating operation and cooling operation.

  The heat source machine G supplies combustion air to the heat medium heating passage 8 through which the heat medium flows through the heating means H including the heat exchanger 7, the gas burner 9 that heats the heat exchanger 7, and the gas burner 9. Or between the blower 10 capable of supplying heat radiation air to the heat exchanger 7, the heating means H in the heating medium heating passage 8 and the outlet 8e for sending the heating medium in the heating medium heating passage 8. A flow path 81 between the inlet 8i for returning the heat medium in the heat medium heating passage 8 and a connection point of a low-temperature heat medium passage 24 described later in the heat medium heating passage 8 And bypass passage opening / closing means for opening and closing the bypass passage 11 so as to interrupt the flow of the heat medium in the bypass passage 11, and the heat medium flowing through the bypass passage 11. Consists of a bypass passage thermal valve 33 and the like that can adjust the flow rate. It has been. The heating means H is configured to be able to heat or dissipate the heat medium flowing through the heat exchanger 7 by the heat exchanger 7, the gas burner 9, and the blower 10.

  An expansion tank 12 is interposed in a return flow path portion 82 that is downstream of the heat medium return inlet 8i in the heat medium heating flow path 8 and is a flow path to the heat exchanger 7. At a location downstream of the expansion tank 12 in the flow path portion 82, the heat medium is directed toward the heat medium delivery outlet 8 e of the heat medium heating flow path 8 (that is, the outlet 8 e of the forward flow path section 81). A heat medium circulation pump 13 which is a heat medium circulation means for fluidizing is provided.

A fuel supply passage 14 for supplying gas fuel to the gas burner 9 includes a fuel interrupt valve 15 for intermittently supplying gas fuel to the gas burner 9 and a fuel adjustment valve 16 for adjusting the amount of gas fuel supplied to the gas burner 9. Is provided.
Furthermore, an igniter 17 for igniting the gas burner 9 and a frame rod 18 for detecting the combustion state of the gas burner 9 are also provided.

  A high temperature side connecting member 19 is provided at the outlet 8e of the forward flow passage portion 81 of the heating medium heating passage 8, and the heating medium return inlet 8i (that is, the return passage) of the heating medium heating passage 8 is provided. A common return connecting member 20 is provided at the inlet 8i) of the portion 82, and further, a flow path between the heat medium circulating pump 13 and the heat exchanger 7 in the return flow path portion 82 of the heat medium heating flow path 8. The low temperature side connection flow channel 21 is branched from the portion (that is, the flow channel portion between the heating medium return inlet 8i and the heating means H), and the tip of the low temperature side connection flow channel 21 is branched. A low-temperature side connection member 22 is provided at the outlet 21e for sending the heat medium.

  Supply temperature detecting means for detecting the temperature of the heating medium sent from the outlet 8e for sending the heating medium upstream of the branching passage 11 of the bypass passage 11 in the forward passage portion 81 of the heating medium heating passage 8 Supply temperature sensor 23 is provided, and the expansion tank 12 is supplied to the expansion tank 12 via the return flow path 82, the temperature of the heat medium sent from the heat medium delivery outlet 21e of the low temperature side connection flow path 21, that is, A low temperature side forward temperature sensor 25 is provided as a low temperature side forward temperature detection means for detecting the temperature of the heat medium supplied to the low temperature heating terminal 2 through a low temperature heat medium passage 24 which will be described later.

A high-temperature heat medium flow passage 26 provided with the high-temperature heating terminal 1 is provided in a state of being connected to the high-temperature side connection member 19 and the common return connection member 20.
Further, the low temperature heating medium passage 24 provided with the low temperature heating terminal 2 is provided in a state of being connected to the low temperature side connecting member 22 and the common return connecting member 20.
That is, the heat medium in the heat medium heating flow path 8 in which the high temperature heat medium flow path 26 provided with the high temperature heating terminal 1 allows the heat medium to flow through the heating means H that can heat and dissipate the heat medium. The low temperature heating medium passage 24 provided with the low temperature heating terminal 2 provided in a state connected to the delivery outlet 8e and the heating medium return inlet 8i is a heating medium in the heating medium heating passage 8. It is provided in a state of being connected to a flow path portion between the return inlet 8i and the heating means H and the heat medium return inlet 8i.

  A high temperature side heat valve 27, which is a high temperature side heat medium flow adjusting means for adjusting the supply of the heat medium to the high temperature heating terminal 1, is provided in a portion upstream of the high temperature heating terminal 1 in the high temperature heat medium passage 26. The low-temperature side heat valve 28, which is a low-temperature side heat medium flow adjusting means for adjusting the supply of the heat medium to the low-temperature heating terminal 2 in a portion upstream of the low-temperature heating terminal 2 in the low-temperature heat medium passage 24. Is provided.

Since the bathroom heating / drying apparatus provided as an example of the high temperature heating terminal 1 is well known, the high temperature heating terminal 1 will be described with reference to the heat from the high temperature heating medium flow passage 26 in a simple description without detailed description and illustration. A high-temperature terminal heat exchanger through which the medium flows, a circulation fan that ventilates air sucked from the heating target space through the high-temperature terminal heat exchanger and then returns to the heating target space, and a heating target space An exhaust fan for exhausting air is provided.
Since a floor cooling / heating device provided as an example of the low temperature heating terminal 2 is also well known, when briefly described without detailed description and illustration, the floor cooling / heating device uses the heat medium from the low temperature heat medium flow passage 24. The heat medium flow pipe to be circulated is installed in the floor cooling / heating panel in an embedded state.

  Moreover, the heat medium cooling flow path 32 that allows the heat medium to flow through the cooling device 30 that is the cooling means R that can cool the heat medium is connected to the low temperature heating terminal 2 and the heat medium in the low temperature heat medium flow path 24. The low-temperature heat medium is used as a heat medium passage for connecting the low-temperature heating terminal 2 and the heat medium return inlet 8i by the four-way valve 31 serving as the flow path switching means in the flow path portion between the return inlet 8i. The cooling side state connected to the flow path 24 and the heating side state separated from the low-temperature heat medium flow path 24 are provided in a switchable state. As the cooling device 30, for example, a heat pump or an underground pile is provided.

The high temperature terminal control unit 3 is configured to be able to communicate with each of the high temperature side operation unit 4 and the main control unit C, and the low temperature terminal control unit 5 is configured to be able to communicate with each of the low temperature side operation unit 6 and the main control unit C. Has been.
Moreover, based on the operation state requested | required by the high temperature side operation part 4 and the low temperature side operation part 6, the main control part C which is a control means and the high temperature side thermal valve 27 which is a high temperature side heat-medium flow adjustment means, The operation of the low temperature side thermal valve 28 as the low temperature side heat medium flow adjusting means, the four way valve 31 as the flow path switching means, and the bypass path thermal valve 33 as the bypass path opening / closing means is controlled. It is configured.

  The high temperature side operation unit 4 is provided with an operation switch 41 for instructing start and stop of operation of the high temperature heating terminal 1.

The low temperature side operation unit 6 includes an operation switch 61 for instructing start and stop of operation of the low temperature heating terminal 2, a cooling / heating selection switch 62 for selecting whether the low temperature heating terminal 2 performs heating operation or cooling operation, and low temperature heating. The control information indicating the cooling / heating capability requested of the terminal 2 is a control unit 63 for setting any one of the cooling / heating capabilities in a plurality of stages, and a lamp for displaying the cooling / heating capability set by the cooling / heating capability setting switch 63. The air-conditioning capacity display part 64 etc. which consist of are provided.
Then, the low temperature terminal control unit 5 opens the low temperature side thermal valve 28 based on the cooling / heating capacity set by the cooling / heating capacity setting switch 63 and the temperature of the heat medium detected by the low temperature side forward temperature sensor 25. The temperature is adjusted so that the temperature of the heating medium detected by the low temperature side temperature sensor 25 approaches the target temperature set for each cooling and heating capacity.

When the start of operation of the high-temperature heating terminal 1 is instructed by the operation switch 41 of the high-temperature side operation unit 4, the high-temperature terminal control unit 3 instructs the main control unit C to configure the circuit for performing the high-temperature heating operation, The supply of the heat medium to the terminal 1 is instructed. Further, when the operation switch 41 of the high temperature side operation unit 4 is instructed to stop the operation of the high temperature heating terminal 1, the main control unit C is instructed to stop the supply of the heat medium to the high temperature heating terminal 1. Yes.
When the operation start of the low temperature heating terminal 2 is instructed by the operation switch 61 of the low temperature side operation unit 6, the low temperature terminal control unit 5 is based on the selection of the heating operation or the cooling operation in the air conditioning selection switch 62 to the main control unit C. The low temperature side based on the circuit configuration, the supply of the heat medium to the low temperature heating terminal 2, the cooling and heating capacity set by the cooling and heating capacity setting switch 63, and the temperature of the heating medium detected by the low temperature side forward temperature sensor 25 The adjustment of the opening degree of the thermal valve 28 is commanded. Further, when the operation switch 61 of the low temperature side operation unit 6 is instructed to stop the operation of the low temperature heating terminal 2, the main control unit C is instructed to stop the supply of the heat medium to the low temperature heating terminal 2. Yes.

[Control of heating medium supply equipment]
Below, based on the control flowchart of FIG. 2, and the figure which shows the circulation state of the heat medium of FIGS. 3-7, the behavior of a heat-medium supply equipment is demonstrated.

  The instruction to the heating medium supply facility is performed by instructing control information to the high temperature terminal control unit 3 and the low temperature terminal control unit 5 through the high temperature side operation unit 4 and the low temperature side operation unit 6. When control information is commanded from the high temperature side operation unit 4 and the low temperature side operation unit 6, the control information is communicated to the main control unit C via the high temperature terminal control unit 3 and the low temperature terminal control unit 5.

As shown in FIG. 2, when the main control unit C receives control information from the high temperature terminal control unit 3 or the low temperature terminal control unit 5 (# 1), the high temperature heating terminal 1 and the low temperature heating terminal 2 are based on the control information. (2) to determine the operation state required for the operation (# 2).
As shown in the branch of # 2 (operation state determination) in FIG. 2, in the operation state required for the high temperature heating terminal 1 and the low temperature heating terminal 2, the heating medium H is heated to heat the high temperature heating medium. The heating operation (A) to be circulated and used for heating, the heat medium is cooled by the cooling means R and circulated as a cold heat medium, and the cooling operation (B), the heating operation or the cooling operation to be used for cooling is stopped. There is a shutdown (C).
The heating operation (A) includes a high-temperature single heating operation (A-1) in which heating is performed only at the high-temperature heating terminal 1, a low-temperature single heating operation (A-2) in which heating is performed only at the low-temperature heating terminal 2, and high-temperature heating. There is a high temperature / low temperature simultaneous heating operation (A-3) in which heating is performed in both the terminal 1 and the low temperature heating terminal 2.
Hereinafter, the behavior of the heat medium supply facility will be described for each of the above operating states.

(A-1) High-temperature independent heating operation The main control unit C is instructed to perform a high-temperature heating operation in the high-temperature heating terminal 1 in the high-temperature terminal control unit 3, and low-temperature heating in the low-temperature heating terminal 2 in the low-temperature terminal control unit 5 When the operation is not commanded, it is determined that the high temperature single heating operation for supplying the heat medium only to the high temperature heating terminal 1 is commanded as the operation state (# 1 → # 2: heating operation). Then, after the circuit is configured for high-temperature single heating (# 11), as the high-temperature heating operation, the temperature detected by the supply temperature sensor 23 is set to the temperature of the heat medium for supplying to the high-temperature heating terminal 1 The heating operation of the heating means H is controlled so that the set temperature (for example, 80 ° C.) is reached, and the heat medium circulation pump 13 is operated (# 12).

The heating medium supply facility according to the present invention performs high-temperature single heating operation according to the circulation state of the heating medium in FIG. That is, when the high temperature independent heating operation is commanded, the main control unit C sets the four-way valve 31 to the heating side state, opens the high temperature side thermal valve 27 and closes the low temperature side thermal valve 28, The bypass passage heat valve 33 is opened to configure a circuit for high-temperature single heating operation (# 11).
After configuring the circuit for the high-temperature single heating operation, the main control unit C operates the blower 10 in a state in which the heat medium circulation pump 13 is operated and the heat medium is circulated through the high-temperature heat medium passage 26, and the fuel is supplied. The intermittent valve 15 and the fuel adjustment valve 16 are opened, the ignition process is performed by activating the igniter 17 to ignite the gas burner 9, and thereafter the gas burner is set so that the detected temperature of the supply temperature sensor 23 becomes the set temperature for high temperature. The opening of the fuel adjustment valve 16 is adjusted in order to adjust the fuel supply amount to 9, and the rotational speed of the blower 10 is adjusted so that the combustion air ventilation amount corresponding to the fuel supply amount is obtained (# 12). ).
As a result, as shown in FIG. 3, the heat medium is heated by the heating means H to become a heat medium having the high temperature set temperature, and the heat medium heating passage 8, the high temperature heat medium passage 26 and the bypass passage. 11 is used for high-temperature heating in the high-temperature heating terminal 1.

The high temperature independent heating operation is performed until the main control unit C receives control information of any one of the other heating operation (A), cooling operation (B), and operation stop (C).
When the control information for starting the operation of the low-temperature heating operation which is another heating operation (A) is received, it is determined that the high-temperature / low-temperature simultaneous heating operation (A-3) described later is instructed, and the heating operation is performed. Moreover, when the control information of the operation start of the cooling operation (B) is received, the cooling operation described later is performed.

  If control information for operation stop (C) is received, it is determined that operation stop has been commanded (# 1 → # 2: operation stop). In this case, since the heating operation is stopped, the post purge process is performed (# 31: Yes → # 32). That is, the main control unit C closes the fuel intermittent valve 15 and the fuel adjustment valve 16, performs post purge by the blower 10 after the closing, and stops the blower 10 when the post purge set time has elapsed ( # 32). Then, after the post-purge process is executed, the high temperature side thermal valve 27 is closed and the heat medium circulation pump 13 is stopped, so that the circuit configuration is set to the operation stop state (# 33).

(A-2) Low-temperature independent heating operation The main control unit C is instructed to perform low-temperature heating operation at the low-temperature heating terminal 2 in the low-temperature terminal control unit 5 and high-temperature heating at the high-temperature heating terminal 1 in the high-temperature terminal control unit 3 When the operation is not commanded, it is determined that the low temperature single heating operation for supplying the heat medium only to the low temperature heating terminal 2 is commanded as the operation state (# 1 → # 2: heating operation). Then, after the circuit is configured for low-temperature single heating (# 11), as a low-temperature heating operation, the temperature detected by the low-temperature side going temperature sensor 25 is supplied to the low-temperature heating terminal 2 lower than the high-temperature set temperature. The heating operation of the heating means H is controlled and the heat medium circulation pump 13 is operated (# 12) so that the temperature becomes the set temperature for low temperature (for example, 60 ° C.) set to the temperature of the heat medium.

The heat medium supply facility according to the present invention performs the low-temperature single heating operation according to the circulation state of the heat medium in FIG. That is, when the low temperature single heating operation is commanded, the main control unit C sets the four-way valve 31 to the heating side state, opens the low temperature side thermal valve 28 and closes the high temperature side thermal valve 27, The bypass path thermal valve 33 is opened to configure a circuit for low-temperature single heating operation (# 11).
After configuring the circuit for low-temperature single heating operation, the main control unit C operates the heat medium circulation pump 13 to execute the ignition process in a state where the heat medium is circulated through the low-temperature heat medium passage 24, Thereafter, the opening degree of the fuel adjustment valve 16 is adjusted to adjust the fuel supply amount to the gas burner 9 so that the temperature detected by the low temperature side temperature sensor 25 becomes the set temperature for low temperature, and the fuel supply amount is adjusted to the fuel supply amount. The rotational speed of the blower 10 is adjusted so as to obtain a corresponding combustion air flow rate. Further, the low-temperature terminal control unit 5 disconnects the circuit for low-temperature heating operation based on the heating capacity set by the cooling / heating capacity setting switch 63 and the temperature of the heat medium detected by the low-temperature side temperature sensor 25. The heating capacity is controlled by adjusting the opening of the low temperature side thermal valve 28 in a range not closing the valve so as not to enter the closed state (# 12).
As a result, as shown in FIG. 4, the heat medium is heated by the heating means H and becomes a heat medium having the set temperature for low temperature, and the heat medium heating passage 8, the low-temperature heat medium passage 24 and the bypass passage. 11 is used for low-temperature heating in the low-temperature heating terminal 2.

The low-temperature single heating operation is performed until the main control unit C receives control information for any of the other heating operation (A), cooling operation (B), and operation stop (C).
When control information for starting the operation of the high-temperature heating operation, which is another heating operation (A), is received, it is determined that a high-temperature / low-temperature simultaneous heating operation (A-3) described later has been commanded, and the heating operation is performed. Moreover, when the control information of the cooling operation (B) is received, the cooling operation described later is performed.

  If control information for operation stop (C) is received, it is determined that operation stop has been commanded (# 1 → # 2: operation stop). In this case, since the heating operation is stopped, the post-purge process is performed (# 31: Yes → # 32). Then, after the post-purge process is executed, the low-temperature side thermal valve 28 is closed and the heat medium circulation pump 13 is stopped, so that the circuit configuration is set to the operation stop state (# 33).

(A-3) High-temperature and low-temperature simultaneous heating operation The main control unit C is instructed to perform high-temperature heating operation at the high-temperature heating terminal 1 by the high-temperature terminal control unit 3 and low-temperature at the low-temperature heating terminal 2 by the low-temperature terminal control unit 5 When the heating operation is instructed, it is determined that the high-temperature and low-temperature simultaneous heating operation for supplying the heat medium to the high-temperature heating terminal 1 and the low-temperature heating terminal 2 is instructed as the operation state (# 1 → # 2: heating operation). . Then, after the circuit is configured for high temperature and low temperature simultaneous heating (# 11), the heating operation of the heating means H is controlled so that the detected temperature of the supply temperature sensor 23 becomes the set temperature for high temperature (for example, 80 ° C.). And the heat medium circulation pump 13 is operated (# 12).

The heating medium supply facility according to the present invention performs high-temperature and low-temperature simultaneous heating operation according to the circulating state of the heating medium in FIG. That is, when the high temperature and low temperature simultaneous heating operation is commanded, the main control unit C sets the four-way valve 31 to the heating side state, opens the high temperature side thermal valve 27 and the low temperature side thermal valve 28, and bypass path heat. The valve 33 is opened to configure a circuit for high-temperature and low-temperature simultaneous heating operation (# 11).
After configuring the circuit for the high temperature and low temperature simultaneous heating operation, the main control unit C operates the heat medium circulation pump 13 to circulate the heat medium through the high temperature heat medium flow path 26 and the low temperature heat medium flow path 24. The ignition process is executed in a state, and thereafter, the opening of the fuel adjustment valve 16 is adjusted to adjust the fuel supply amount to the gas burner 9 so that the detected temperature of the supply temperature sensor 23 becomes the set temperature for high temperature, And the rotational speed of the air blower 10 is adjusted so that it may become the air flow volume for combustion according to the fuel supply amount. In addition, the low temperature terminal control unit 5 sets the low temperature heating medium passage 24 based on the heating capacity set by the cooling / heating capacity setting switch 63 and the temperature of the heating medium detected by the low temperature side temperature sensor 25. In order not to be disconnected from the heating operation circuit, the opening degree of the low temperature side thermal valve 28 is adjusted within a range in which it is not closed to control the heating capacity (# 12).
As a result, as shown in FIG. 5, the heat medium is heated by the heating means H to become a heat medium having the high temperature set temperature, and the heat medium heating flow path 8, the high temperature heat medium flow path 26, and the bypass path. 11 is used for high-temperature heating in the high-temperature heating terminal 1. Further, a part of the heat medium whose temperature is lowered and used in the high-temperature heating terminal 1 is mixed with the high-temperature heat medium from the bypass passage 11 and flows to the low-temperature heat medium flow path 24, and the low-temperature heating terminal 2. Used for low-temperature heating.

  Note that, as described above, the main control unit C receives the low temperature heating operation at the low temperature heating terminal 2 from the low temperature terminal control unit 5 during execution of the high temperature single heating operation (A-1) and the low temperature. When the high temperature heating operation at the high temperature heating terminal 1 is commanded from the high temperature terminal control unit 3 during execution of the single heating operation (A-2), it is determined that the high temperature low temperature simultaneous heating operation is commanded. Yes.

When the high temperature terminal control unit 3 instructs the main control unit C to stop the operation of the high temperature heating terminal 1 during the high temperature / low temperature simultaneous heating operation (A-3), the main control unit C closes the high temperature side thermal valve 27. The circulation of the heat medium to the high temperature heat medium passage 26 is stopped and the low temperature single heating operation (A-2) is executed.
Further, when the operation of the low temperature heating terminal 2 is instructed from the low temperature terminal control unit 5 during execution of the high temperature / low temperature simultaneous heating operation (A-3), the main control unit C closes the low temperature side thermal valve 28. It is configured to stop the circulation of the heat medium to the low temperature heat medium passage 24 and execute the high temperature single heating operation (A-1).
Furthermore, the main control unit C stops the operation of the high temperature heating terminal 1 from the high temperature terminal control unit 3 and stops the operation of the low temperature heating terminal 2 from the low temperature terminal control unit 5 during the execution of the high temperature / low temperature simultaneous heating operation (A-3). Are simultaneously commanded, it is determined that the stop of the heating operation has been commanded, and the post-purge process is executed (# 1 → # 2: operation stop → # 31: Yes → # 32). Then, after the execution of the post-purge process, the high temperature side thermal valve 27 and the low temperature side thermal valve 28 are closed, the heat medium circulation pump 13 is stopped, and the circuit configuration is set to the operation stop state (# 33).

(B) Cooling operation When the low temperature terminal control unit 5 commands the cooling operation at the low temperature heating terminal 2, the main control unit C determines that the cooling operation is commanded as an operation state. Then, the heat radiation operation is first performed, and then the cooling operation is performed.
That is, when receiving the control information for instructing the cooling operation (# 1 → # 2: cooling operation), the main control unit C configures the circuit for the heat radiation operation (# 21) and detects the low-temperature side going temperature sensor 25. The heating means H is operated for heat dissipation and heat is set so that the temperature is equal to or lower than the set temperature for heat dissipation (for example, 40 ° C. slightly higher than human body temperature) set as the reference temperature of the heat medium for starting the cooling operation. The medium circulation pump 13 is operated to perform a heat radiation operation (# 22).
Then, after the temperature detected by the low temperature side temperature sensor 25 becomes equal to or lower than the set temperature for heat dissipation, the cooling operation is executed. That is, after the circuit is configured for cooling operation (# 23), the cooling device 30 is configured so that the temperature detected by the low-temperature side going temperature sensor 25 becomes the set temperature for cooling (for example, 15 ° C. due to cooling by underground piles). The operation is controlled and the heat medium circulation pump 13 is operated to execute the cooling operation (# 24).

Hereinafter, the heat radiation operation and the cooling operation will be described in more detail.
The heat medium supply facility according to the present invention performs a heat radiation operation according to the circulation state of the heat medium in FIG. That is, when the heat control operation is instructed, the main control unit C sets the four-way valve 31 to the heating side state, closes the low temperature side thermal valve 28 and the high temperature side thermal valve 27, and bypass path thermal valve 33. To open a circuit for heat radiation operation (# 21).
After configuring the circuit for heat radiation operation, the main control unit C operates the heat medium circulation pump 13 and passes through the heat medium heating passage 8 and the bypass passage 11 through the heating means H including the heat exchanger 7. The heat medium is circulated and the blower 10 is operated to supply heat radiation air to the heat exchanger 7 for cooling, and the heat medium flowing through the heat exchanger 7 is radiated (# 22).
Thereby, as shown in FIG. 6, the heat medium is radiated by the heating means H, and circulates through the low-temperature heat medium flow path 24 and the heat medium cooling flow path 32 until the heat medium becomes below the set temperature for heat radiation.

When the heat dissipation operation is completed, the heat medium supply facility according to the present invention configures the cooling operation circuit shown in FIG. 7 and performs the cooling operation. That is, when the heat radiation operation is completed, the main control unit C sets the four-way valve 31 to the cooling side state, opens the low temperature side thermal valve 28, and sets the high temperature side thermal valve 27 and the bypass path thermal valve. 33 is closed to configure a cooling operation circuit (# 23).
After the circuit for cooling operation is configured, the main control unit C operates the heat medium circulation pump 13 to circulate the heat medium through the low temperature heat medium passage 24 and the heat medium cooling passage 32. Thereafter, the operation of the cooling device 30 is controlled so that the temperature detected by the low-temperature side going temperature sensor 25 becomes the set temperature for cooling. Further, the low-temperature terminal control unit 5 disconnects the circuit for cooling operation based on the cooling capacity set by the cooling / heating capacity setting switch 63 and the temperature of the heat medium detected by the low-temperature side temperature sensor 25. The cooling capacity is controlled by adjusting the opening of the low temperature side thermal valve 28 in a range not closing the valve so as not to enter the closed state (# 24).
As a result, as shown in FIG. 7, the heat medium is cooled by the cooling device 30 and becomes a heat medium having the cooling set temperature, and circulates through the low-temperature heat medium flow path 24 and the heat medium cooling flow path 32. The low-temperature heating terminal 2 is used for cooling.

The cooling operation is performed until the main control unit C receives control information for either the heating operation (A) or the operation stop (C).
When the control information for the heating operation (A) is received, the heating operation described above is performed. If control information for operation stop (C) is received, it is determined that operation stop has been commanded (# 1 → # 2: operation stop). In this case, since the cooling operation is stopped, the post-purge process is not performed, the cooling device 30 is stopped, the low-temperature side thermal valve 28 is closed, the heat medium circulation pump 13 is stopped, and the operation is stopped. A circuit configuration is adopted (# 31: No → # 33).

[Another embodiment]
Hereinafter, another embodiment of the present invention will be described.

(A) In the above embodiment, the configuration of setting the cooling / heating capability required for the low-temperature cooling / heating terminal by a plurality of stages of cooling / heating capability is illustrated, but the configuration is only an example, and the cooling / heating capability required for the low-temperature cooling / heating terminal is illustrated. The configuration to be set is not limited to the configuration.
For example, target space temperature detecting means for detecting the temperature of a space to be heated that is to be heated by a low-temperature heating terminal, and target heating temperature setting means for setting a target heating temperature for heating the space to be heated are provided, and target heating is provided. It is good also as a structure which determines the capability of the air conditioning requested | required of a low-temperature air-conditioning terminal based on the temperature difference of the target heating temperature set by a temperature setting means, and the detection temperature of an object space temperature detection means.

(B) In the above embodiment, the high temperature side heat medium flow adjusting means is configured by a thermal valve (high temperature side thermal valve) and is controlled to open and close. However, as another embodiment, the high temperature side heat medium flow is controlled. The flow adjusting means may be configured as an on / off valve that can only be opened / closed (interruption of heating medium supply to the high-temperature heating terminal), and may be configured to open / close similarly to the high-temperature side thermal valve in the above embodiment.
Moreover, in the said embodiment, although the structure which performs only the opening / closing control which opens or closes the high temperature side thermal valve which is a high temperature side heat-medium flow adjustment means was illustrated, as another embodiment, a high temperature side thermal valve May be configured to control the heating capacity of the high-temperature heating terminal by adjusting the opening degree of the high-temperature side thermal valve (in the case of high-temperature single heating operation or high-temperature and low-temperature simultaneous heating operation).

(C) In the above embodiment, as the configuration for controlling the heating capability of low-temperature heating and the cooling capability at the time of cooling, the opening degree of the low-temperature side thermal valve is adjusted based on the cooling / heating capability set by the cooling / heating capability setting switch However, as an alternative embodiment, the low-temperature side heating medium flow adjustment means can be opened and closed only (interruption of heating medium supply to the low-temperature heating terminal). It is good also as a structure which is comprised with a valve and controls the air-conditioning capacity | capacitance by opening the said opening-and-closing valve at the time of low temperature heating and air_conditionaing | cooling operation, and adjusting the heating capacity of a heating means or the cooling capacity of a cooling means.

(D) In the above embodiment, the configuration provided with the gas burner as the heating source of the heating means is illustrated, but the configuration is only an example and is not limited thereto. For example, an electric heater or the like may be configured as a heating source.

(E) In the embodiment described above, the transition from the heat radiation operation to the cooling operation is exemplified by the configuration in which the transition from the heat radiation operation to the cooling operation is performed when the detected temperature of the supply temperature sensor is equal to or lower than the set temperature for heat radiation. A structure is only an illustration and is not limited to this. For example, another configuration may be employed in which the heat dissipation operation is performed for a predetermined time and then the operation is shifted to the cooling operation.

(F) In the above embodiment, the configuration in which the refrigerant cooled by the cooling means is circulated in the low-temperature heating terminal has been described. However, the heating means H is bypassed and cooled to the high-temperature heating terminal, the expansion tank, and the heat medium circulation pump. The refrigerant cooled by the means may be circulated.
In this case, the refrigerant may be circulated to the high temperature heating terminal independently of the low temperature heating terminal, or may be circulated to both the cooling / heating terminal and the high temperature heating terminal.

DESCRIPTION OF SYMBOLS 1 High temperature heating terminal 2 Low temperature heating terminal 8 Heat medium heating passage 8e Heat medium delivery outlet 8i Heat medium return inlet 11 Bypass path 13 Heat medium circulation pump (heat medium circulation means)
24 Low-temperature heat medium flow path 26 High-temperature heat medium flow path 27 High-temperature side thermal valve (High-temperature side heat medium flow adjustment means)
28 Low-temperature side heat operated valve (low-temperature side heat medium flow adjustment means)
30 Cooling device (cooling means)
31 Four-way valve (flow path switching means)
32 Heat medium cooling passage 33 Bypass passage thermal valve (Bypass passage opening / closing means)
C Main control unit H Heating means R Cooling means

Claims (7)

For heating medium delivery in the heating medium heating passage where the heating medium passage having a high temperature heating terminal capable of high temperature heating operation passes the heating medium through a heating means capable of heating the heating medium. Connected to the outlet and the heat medium return inlet,
The low-temperature heating medium flow path provided with a low-temperature heating terminal capable of low-temperature heating operation includes a flow path portion between the heating medium return inlet and the heating means in the heating medium heating flow path and the heat. It is provided in a state connected to the inlet for medium return,
High temperature side heat medium flow adjusting means for adjusting the opening degree of the high temperature heat medium flow path so as to intermittently or adjust the supply of the heat medium to the high temperature heating terminal, and intermittent heating medium supply to the low temperature heating terminal Or a low-temperature side heat medium flow adjusting means for adjusting the opening of the low-temperature heat medium flow path so as to adjust,
Cooling operation is possible in the low temperature heating terminal,
A heating medium cooling passage for allowing the heating medium to flow through a cooling means capable of cooling the heating medium is provided between the low temperature heating terminal and the heating medium return inlet in the low temperature heating medium passage. In the flow path portion, the cooling side state connected to the low temperature heat medium flow path as a heat medium flow path connecting the low temperature heating terminal and the heat medium return inlet by the flow path switching means, The heating side state separated from the low temperature heat medium passage is provided in a switchable state,
Based on the operation state required for the high temperature heating terminal and the low temperature heating terminal, the high temperature side heat medium flow adjustment means, the low temperature side heat medium flow adjustment means, and the flow path switching means are operated. Heat medium supply equipment provided with control means for controlling. A flow path portion between the heating means in the heat medium heating flow path and the heat medium delivery outlet in the heat medium heating flow path; and for returning the heat medium in the heat medium heating flow path. A bypass path is provided to connect the inlet and the flow path portion between the connection point of the low temperature heat medium flow path in the heat medium heating flow path,
Bypass path opening and closing means for opening and closing the bypass path so as to interrupt the flow of the heat medium in the bypass path is provided,
The heat medium supply facility according to claim 1, wherein the control unit controls the operation of the bypass path opening / closing unit based on the operation state.   The heat medium supply facility according to claim 2, wherein the bypass path opening / closing means is provided so as to freely adjust a flow rate of the heat medium flowing through the bypass path.   2. The heating medium supply facility according to claim 1, wherein when the low temperature heating terminal is requested to perform a cooling operation, the low temperature side heat medium flow adjustment means is opened in the control means, and the high temperature side heat medium flow is provided. With the adjustment means closed and the flow path switching means in the cooling side state, the heat medium is circulated through the low temperature heat medium flow path and the heat medium cooling flow path to cool at the low temperature heating terminal. An operation control method for a heat medium supply facility for performing cooling operation control for performing operation.   4. The heating medium supply facility according to claim 2 or 3, wherein when the cooling operation is required for the low temperature heating terminal, the low temperature side heating medium flow adjustment means is opened in the control means, and the high temperature side heating medium is set. With the flow adjustment means closed, the flow path switching means in the cooling side state, and the bypass path opening / closing means in the closed state, the heat medium is the low temperature heat medium flow path and the heat medium cooling flow path. And controlling the operation of the heat medium supply facility for performing the cooling operation control for performing the cooling operation at the low temperature heating terminal.   When the low temperature heating terminal is requested to perform a cooling operation, the low temperature side heat medium flow adjustment means and the high temperature side heat medium flow adjustment means are closed before the control means performs the cooling operation control. 6. A heat release operation control is performed in which the heat medium is circulated through the heat medium heating passage through the bypass path and the heat dissipates heat in the state where the bypass path opening / closing means is in an open state. Operation control method of the heating medium supply equipment. In the heat-medium supply equipment as described in any one of Claims 1-3,
When the low temperature heating terminal is not required for operation and the high temperature heating terminal is required for high temperature single heating operation where high temperature heating operation is required, the high temperature side heat medium flow adjustment means is opened, the low temperature side With the heat medium flow adjustment means closed, and the flow path switching means in the heating side state,
When the high temperature heating terminal is not required for operation and the low temperature heating terminal is required for low temperature single heating operation where low temperature heating operation is required, the high temperature side heat transfer control means is closed, the low temperature side With the heat medium flow adjustment means in the open state and the flow path switching means in the heating side state,
When the high temperature heating terminal is required to perform a high temperature heating operation and the low temperature heating terminal is required to perform a high temperature / low temperature simultaneous heating operation, the high temperature side heat medium flow adjusting means and the low temperature side heat are required. With the medium flow adjustment means in the open state and the flow path switching means in the heating side state,
An operation control method for a heating medium supply facility that causes the control means to perform heating operation control in which the heating medium heated by the heating means is circulated to perform a heating operation.

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