JP2009216288A - Heat medium supply equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide heat medium supply equipment capable of performing proper air heating by a low-temperature heating terminal even when a temperature of a heat medium supplied to the low-temperature heating terminal is changed, in a simultaneous operation for supplying the heat medium to a high-temperature heating terminal and the low-temperature heating terminal. <P>SOLUTION: An opening and closing ratio setting means 5 is constituted to determine an average heat medium temperature by sampling detected-temperature data of a low temperature-side going temperature detecting means 25 during an opening time in a single cycle and averaging the temperature data, when the simultaneous operation for supplying the heat medium to the high-temperature heating terminal 1 and the low-temperature heating terminal 2 is instructed, to set an opening and closing ratio on the basis of the average heat medium temperature and the heating quantity requirement information in several stages in the form that the larger the required heating quantity is, the longer the opening time is, and to set the opening and closing ratio of at least a part of stages at least at a side of larger requested heating quantity among the opening and closing ratios of several stages based on the requested heating quantity in several stages in the form that the opening time is shortened when the average heat medium temperature becomes high so far as the requested heating quantity of the same stage. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to an outlet for heat medium delivery in a heat source side heat medium flow path in which a high temperature heat medium flow path provided with a high temperature heating terminal allows the heat medium to flow through heating means for heating the heat medium. And connected to the inlet for returning the heat medium,
A low-temperature heat medium flow path provided with a low-temperature heating terminal includes a flow path portion between the heat medium return inlet and the heating means in the heat source side heat medium flow path and the heat medium return inlet. And connected to the
A heat medium circulating means is provided in the heat source side heat medium flow path to flow the heat medium toward the heat medium delivery outlet,
High temperature side opening / closing means for opening and closing the high temperature heat medium passage so as to intermittently supply the heat medium to the high temperature heating terminal;
Low temperature side opening and closing means for opening and closing the low temperature heating medium passage so as to intermittently supply the heating medium to the low temperature heating terminal;
Supply temperature detection means for detecting the temperature of the heating medium delivered from the outlet for delivering the heating medium;
Based on the heating amount request information indicating the size of the required heating amount, the opening / closing ratio between the opening time for maintaining the low temperature side opening / closing means in the open state and the closing time for maintaining the closed state is increased as the required heating amount increases. Open / close ratio setting means for setting in a plurality of stages in the form of lengthening,
When the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal is commanded, the detected temperature of the supply temperature detecting means is set to the temperature of the heat medium for supplying to the high temperature heating terminal The heating operation of the heating means is controlled to reach a set temperature, the opening / closing operation of the high temperature side opening / closing means is controlled to be in the open state, and the opening / closing ratio in a single cycle is controlled by the opening / closing ratio setting means. The present invention relates to a heat medium supply facility provided with control means for controlling the opening and closing operation of the low temperature side opening and closing means so as to periodically open and close in a form adjusted based on a set opening and closing ratio.

  Such heat medium supply equipment circulates and supplies a heat medium to a high temperature heating terminal such as a bathroom heating / drying device and a low temperature heating terminal such as a floor heating device, and supplies the heat medium to the high temperature heating terminal and the low temperature heating terminal. In the simultaneous operation to supply, the heating medium heated to the set temperature by the heating means is supplied to the high temperature heating terminal, and the heat medium that has passed through the high temperature heating terminal and the heat that has passed through the low temperature heating terminal are supplied to the low temperature heating terminal. A heat medium that is combined with the medium is supplied, and the low temperature heating terminal is supplied with a heat medium having a temperature lower than the temperature of the heat medium supplied to the high temperature heating terminal. (For example, refer to Patent Document 1).

Detailed control of the low-temperature side opening / closing means is not described in Patent Document 1, but in such a heat medium supply facility, generally based on heating amount request information indicating the size of the required heating amount. An open / close ratio setting means is provided for setting the open / close ratio between the open time for maintaining the low temperature side open / close means in the open state and the close time for maintaining the low temperature state in multiple stages in such a manner that the open time is lengthened as the required heating amount increases. The control means controls the opening / closing operation of the low temperature side opening / closing means so as to periodically open / close in a form in which the opening / closing ratio in a single cycle is adjusted based on the set opening / closing ratio set by the opening / closing ratio setting means. It is configured as follows.
And the open / close ratio corresponding to the required heating amount at each stage was set to a ratio corresponding to the predetermined temperature, assuming that the temperature of the heat medium supplied to the low-temperature heating terminal is constant at a predetermined temperature ( For example, see Patent Document 2.)

JP 2007-192444 A JP 2005-282899 A

  By the way, the heating load of the space to be heated by the high temperature heating terminal or the space to be heated by the low temperature heating terminal fluctuates, and accordingly, the temperature of the heat medium passing through the high temperature heating terminal or the low temperature heating terminal Since the temperature of the heating medium that has passed through fluctuates, in the simultaneous operation of supplying the heating medium to the high temperature heating terminal and the low temperature heating terminal, the heating medium that has passed through the high temperature heating terminal and the heating medium that has passed through the low temperature heating terminal merge. Thus, the temperature of the heat medium supplied to the low-temperature heating terminal varies.

  However, in the conventional heat medium supply equipment, in the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal, even if the temperature of the heat medium supplied to the low temperature heating terminal fluctuates, the required heating amount is Since the opening / closing operation of the low temperature side opening / closing means is controlled so that it is periodically opened / closed at the same opening / closing ratio at the same stage, the heating state obtained by the low temperature heating terminal varies even if the required heating amount is the same stage. Therefore, there was a problem that it was difficult to perform appropriate heating.

  The present invention has been made in view of such circumstances, and its purpose is to change the temperature of the heat medium supplied to the low temperature heating terminal in the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal. Even so, it is to provide a heat medium supply facility capable of performing appropriate heating with a low-temperature heating terminal.

The heat medium supply facility of the present invention is a heat source side heat medium flow path in which the high temperature heat medium flow path provided with the high temperature heating terminal allows the heat medium to flow through the heating means for heating the heat medium. Provided in a state connected to the outlet for medium delivery and the inlet for heat medium return,
A low-temperature heat medium flow path provided with a low-temperature heating terminal includes a flow path portion between the heat medium return inlet and the heating means in the heat source side heat medium flow path and the heat medium return inlet. And connected to the
A heat medium circulating means is provided in the heat source side heat medium flow path to flow the heat medium toward the heat medium delivery outlet,
High temperature side opening / closing means for opening and closing the high temperature heat medium passage so as to intermittently supply the heat medium to the high temperature heating terminal;
Low temperature side opening and closing means for opening and closing the low temperature heating medium passage so as to intermittently supply the heating medium to the low temperature heating terminal;
Supply temperature detection means for detecting the temperature of the heating medium delivered from the outlet for delivering the heating medium;
Based on the heating amount request information indicating the size of the required heating amount, the opening / closing ratio between the opening time for maintaining the low temperature side opening / closing means in the open state and the closing time for maintaining the closed state is increased as the required heating amount increases. Open / close ratio setting means for setting in a plurality of stages in the form of lengthening,
When the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal is commanded, the detected temperature of the supply temperature detecting means is set to the temperature of the heat medium for supplying to the high temperature heating terminal The heating operation of the heating means is controlled to reach a set temperature, the opening / closing operation of the high temperature side opening / closing means is controlled to be in the open state, and the opening / closing ratio in a single cycle is controlled by the opening / closing ratio setting means. Control means for controlling the opening and closing operation of the low temperature side opening and closing means so as to periodically open and close in the form of adjustment based on the set opening and closing ratio,
The first characteristic configuration is provided with a low temperature side forward temperature detecting means for detecting a temperature of the heat medium supplied to the low temperature heating terminal through the low temperature heat medium passage,
When the opening / closing ratio setting means is instructed to simultaneously supply a heating medium to the high temperature heating terminal and the low temperature heating terminal, the detected temperature data of the low temperature side forward temperature detection means during an open time in a single cycle The temperature data sampled is averaged to obtain the average heat medium temperature, and based on the average heat medium temperature and the heating amount request information, the opening / closing ratio is increased in multiple stages in the form in which the opening time is lengthened as the required heating amount increases. If the required heating amount is the same step, the average heating medium is set to the opening / closing ratios of at least some of the multiple stages of the opening / closing ratios corresponding to the required heating amount. When temperature rises, it exists in the point comprised so that it may set to several steps in the form which shortens opening time.

That is, when the simultaneous operation of supplying the heating medium to the high temperature heating terminal and the low temperature heating terminal is instructed, the open / close ratio setting means samples the detected temperature data of the low temperature side temperature detection means during the open time in a single cycle. The average heat medium temperature is obtained by averaging the measured temperature data, and based on the average heat medium temperature and the heating amount request information, the opening / closing ratio is set in multiple stages in such a manner that the opening time becomes longer as the required heating amount is larger. In addition, if the required heating amount is the same step, the average heating medium temperature is higher if the required heating amount is the same as the opening / closing ratio of at least a part of the multiple steps of the opening / closing ratio corresponding to the required heating amount. If so, it is set in a plurality of stages in a form that shortens the opening time.
Then, the control means opens / closes the low temperature side opening / closing means based on the set opening / closing ratio set by the opening / closing ratio setting means.

In other words, at least some of the opening / closing ratios on the side where the required heating amount is large among the opening / closing ratios of a plurality of stages according to the required heating amount, the heat supplied to the low-temperature heating terminal if the required heating amount is the same stage. Since the open / close ratio can be set according to the temperature of the medium, even if the temperature of the heat medium supplied to the low temperature heating terminal fluctuates, the heat medium supplies the low temperature heating terminal during a single cycle. Appropriate heating can be performed by the cooling / heating terminal while suppressing fluctuations in the amount of heat.
Moreover, as the temperature of the heat medium for setting the open / close ratio, the average heat medium temperature obtained by averaging the sampling temperature data of the detection temperature data of the low temperature side temperature detection means during the open time of a single cycle is used. By suppressing the sudden abnormal value of data from affecting the setting of the switching ratio, the switching ratio appropriate for the temperature of the heating medium supplied to the low-temperature heating terminal is set appropriately, and the Heating can be performed even better.
Therefore, in the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal, even if the temperature of the heat medium supplied to the low temperature heating terminal fluctuates, appropriate heating can be performed by the low temperature heating terminal, Moreover, it is possible to provide a heat medium supply facility that can appropriately perform heating by the low-temperature heating terminal by appropriately setting an opening / closing ratio appropriate for the temperature of the heat medium supplied to the low-temperature heating terminal. It was.

In addition to the first feature configuration, the second feature configuration is
The open / close ratio setting means obtains an average heat medium temperature by averaging the temperature data obtained by sampling the detected temperature data of the low temperature side forward temperature detection means in the front part during the open time in a single cycle, and calculates the average heat It is configured to set the open / close ratio based on the medium temperature,
The control means adjusts the time during which the low temperature side opening / closing means is kept open in the rear part following the front part during the opening time in a single cycle, and the opening / closing ratio is set to the opening / closing ratio setting means. Therefore, the opening / closing operation of the low temperature side opening / closing means is controlled so that the set opening / closing ratio is changed.

That is, the open / close ratio setting means obtains an average heat medium temperature by averaging temperature data obtained by sampling the detected temperature data of the low temperature side forward temperature detection means in the front part during the opening time in a single cycle, and calculates the average heat medium temperature. The open / close ratio is set based on the medium temperature.
Then, the control means adjusts the time for maintaining the low temperature side opening / closing means in the open state in the rear part following the front part during the opening time in a single cycle, and the opening / closing ratio is determined by the opening / closing ratio setting means. The opening / closing operation of the low temperature side opening / closing means is controlled so that the changed opening / closing ratio is obtained.

In other words, in the front part during the opening time in a single cycle, the average heat medium temperature is obtained, the open / close ratio is set based on the average heat medium temperature, and the open / close ratio in the same single cycle as the open / close ratio is set. In the rear part following the front part during the time, the opening / closing ratio of the low temperature side opening / closing means is changed and set by the opening / closing ratio setting means by adjusting the time for keeping the low temperature side opening / closing means open. The ratio is adjusted so that the heating medium is supplied to the high-temperature heating terminal and the low-temperature heating terminal at the same time, even if the temperature of the heating medium supplied to the low-temperature heating terminal fluctuates, the low-temperature side opening and closing is as fast as possible. The opening / closing ratio of the means can be adjusted to an opening / closing ratio adapted to the temperature of the heat medium supplied to the low-temperature heating terminal, and fluctuations in the heating state obtained by the low-temperature heating terminal can be suppressed as quickly as possible.
Therefore, even if the temperature of the heating medium supplied to the low-temperature heating terminal varies, the fluctuation of the heating state obtained by the low-temperature heating terminal can be suppressed as quickly as possible, so the temperature of the heating medium supplied to the low-temperature heating terminal Even if fluctuates, more appropriate heating can be performed by the low-temperature heating terminal.

In addition to the first feature configuration, the third feature configuration is
The open / close ratio setting means obtains an average heat medium temperature by averaging the temperature data obtained by sampling the detected temperature data of the low temperature side forward temperature detection means over the entire length or substantially the entire length of the open time in a single cycle, and calculates the average heat The configuration is such that the open / close ratio is set based on the medium temperature.

That is, the open / close ratio setting means obtains an average heat medium temperature by averaging temperature data obtained by sampling the detected temperature data of the low temperature side temperature detection means over the entire length or substantially the entire length of the open time in a single cycle, and calculates the average heat medium temperature. Since the open / close ratio is set based on the medium temperature, the required heating amount level is high and the opening time in a single cycle is long, as well as the required heating amount level is low and the opening time in a single cycle is short. However, the average heat medium temperature can be determined as corresponding to the heating state obtained with the heat medium supplied to the low-temperature heating terminal.
And since the open / close ratio is set based on the average heat medium temperature determined as corresponding to the heating state obtained by the heat medium supplied to the low temperature heating terminal, the level of the required heating amount is high. The open / close ratio is adapted to the temperature of the heating medium supplied to the low-temperature heating terminal even if the required heating amount is low and the open time in a single cycle is short, as well as when the open time in a single cycle is long. Appropriately obtained in the state.
Therefore, since the low temperature side opening / closing means is periodically opened and closed based on the opening / closing ratio adapted to the temperature of the heat medium supplied to the low temperature heating terminal, the high temperature heating terminal and the low temperature heating terminal are In the simultaneous operation of supplying the heat medium, even if the temperature of the heat medium supplied to the low temperature heating terminal fluctuates, the low temperature heating terminal can perform more appropriate heating.

The fourth feature configuration is in addition to any one of the first to third feature configurations,
The relationship between the required heating amount and the opening / closing ratio relationship information in which the opening / closing ratio is set in a plurality of stages according to the required heating amount is at least a part of the side having the larger required heating amount among the opening / closing ratios in the plurality of stages according to the requested heating amount If the average heating medium temperature becomes higher if the required heating amount is the same stage as the opening / closing ratio of the stage, the opening time is shortened, and a plurality is set according to the average heating medium temperature,
The opening / closing ratio setting means is configured to set an opening / closing ratio based on the required heating amount / opening / closing ratio relationship information selected according to the average heat medium temperature among the plurality of required heating amount / opening / closing ratio relationship information. It is in the point.

That is, when the temperature of the heating medium supplied to the low-temperature heating terminal increases, the change in the heating state obtained by the low-temperature heating terminal can be suppressed by changing the open / close ratio in a form that shortens the length of the opening time. In view of the possibility, low temperature heating is performed so that the heating state obtained by the low temperature heating terminal is approximately the same even if the temperature of the heat medium supplied to the low temperature heating terminal is different for each stage of the required heating amount by experiment. An open / close ratio is set for each of the temperatures of the heating medium at a plurality of stages supplied to the terminal.
Based on the experimental results, if the required heating amount is the same stage, even if the average heating medium temperature is different, the low temperature heating terminal can obtain a substantially equivalent heating state according to the average heating medium temperature. Information on the amount-to-open / close ratio can be set.
Then, the required heating amount / opening / closing ratio relationship information corresponding to the average heating medium temperature is selected from the plurality of required heating amount / opening / closing ratio relationship information set as described above, and the selected required heating amount / opening / closing ratio relationship information is selected. Therefore, the switching ratio can be set to be adapted to the temperature of the heating medium supplied to the low-temperature heating terminal, and the temperature of the heating medium supplied to the low-temperature heating terminal varies. Moreover, the fluctuation | variation of the heating state obtained with a low-temperature heating terminal can be suppressed further.

Incidentally, the opening time and the temperature of the heat medium supplied to the low-temperature heating terminal can be suppressed so that the fluctuation of the heating state obtained by the low-temperature heating terminal can be suppressed even if the temperature of the heat medium supplied to the low-temperature heating terminal varies. It is assumed that the relationship is defined by a mathematical expression such as a linear expression and an opening / closing ratio corresponding to the temperature of the heat medium supplied to the low-temperature heating terminal is obtained based on the mathematical expression.
However, the open time and the supply to the low-temperature heating terminal are provided so that the fluctuation of the heating state obtained by the low-temperature heating terminal can be suppressed over the entire range in which the temperature of the heat medium supplied to the low-temperature heating terminal is assumed to fluctuate. Since it is difficult to accurately define the relationship between the temperature of the heating medium and the temperature of the heating medium, the average heating medium is calculated based on the formula that defines the relationship between the opening time and the temperature of the heating medium supplied to the low-temperature heating terminal. When setting the open / close ratio according to the temperature, for example, when the temperature of the heat medium supplied to the low temperature heating terminal fluctuates greatly, it is difficult to accurately suppress the fluctuation of the heating state obtained by the low temperature heating terminal. There is.
Therefore, by experimenting as described above, a plurality of required heating amount / opening / closing ratio relationship information is set according to the average heat medium temperature, and the average of the plurality of required heating amount / opening / closing ratio relationship information thus set is average. In the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal by configuring the open / close ratio based on the required heating amount / open / close ratio relationship information selected according to the heat medium temperature, the low temperature Even if the temperature of the heating medium supplied to the heating terminal fluctuates, the low-temperature heating terminal can perform more appropriate heating.

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. Main control unit C as control means for controlling the operation of the equipment, high temperature terminal control unit 3 for controlling the operation of the high temperature heating terminal 1, various control information for operating the high temperature heating terminal 1 to the high temperature terminal control unit 3 The high temperature side operation unit 4 for instructing the low temperature heating terminal 2, the low temperature terminal control unit 5 for controlling the operation of the low temperature heating terminal 2, and the low temperature side operation for instructing the low temperature terminal control unit 5 for various control information for operating the low temperature heating terminal 2 The unit 6 is provided.
Incidentally, as the high temperature heating terminal 1, for example, a bathroom heating / drying device and a fan convector are provided, and as the low temperature heating terminal 2, for example, a floor heating device is provided.

  The heat source machine G supplies a heat source side heat medium passage 8 through which a heat medium flows through the heat exchanger 7, a gas burner 9 that heats the heat exchanger 7, and combustion air to the gas burner 9. Combustion blower 10, a forward flow passage portion 81 for sending out the heat medium in the heat source side heat medium passage passage 8 and a return flow passage portion 82 for returning the heat medium in the heat source side heat medium passage passage 8 are connected in communication. The bypass path 11 and the like are provided. That is, the heat exchanger 7 and the gas burner 9 for heating the heat exchanger 7 constitute a heating means H for heating the heat medium.

  An expansion tank 12 is interposed in the return flow path portion 82, and a heat medium is transferred to the heat source side heat medium flow path 8 at a location downstream of the expansion tank 12 in the return flow path portion 82. The heat medium circulation pump 13 is provided as a heat medium circulation means for flowing toward the heat medium delivery outlet 8e (that is, the outlet 8e of the forward flow path portion 81).

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 adjusting 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.

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

  A supply temperature for detecting the temperature of the heat medium sent from the outlet 8e for sending the heat medium is provided upstream of the bypass passage 11 in the forward flow path portion 81 of the heat source side heat medium flow path 8. A supply temperature sensor 23 is provided as a detecting means, and the temperature of the heat medium sent out from the outlet 21e for sending the heat medium of the low temperature side connection channel 21 in the low temperature side connection channel 21, that is, A low temperature side forward temperature sensor 25 is provided as 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 passage 26 provided with the high-temperature heating terminal 1 is provided in a state of being connected to the high-temperature side forward connection member 19 and the common return connection member 20.
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.
In other words, the high-temperature heat medium passage 26 provided with the high-temperature heating terminal 1 is connected to the heat medium delivery outlet 8e and the heat medium return inlet 8i in the heat source side heat medium passage 8. The low temperature heating medium passage 24 provided with the low temperature heating terminal 2 is provided between the heating medium return inlet 8i and the heating means H in the heat source side heat medium passage 8. It is provided in a state where it is connected to the flow path portion and the inlet 8i for returning the heat medium.

  High temperature side opening / closing means for opening and closing the high temperature heating medium passage 26 so as to intermittently supply the heating medium to the high temperature heating terminal 1 at a portion upstream of the high temperature heating terminal 1 in the high temperature heating medium passage 26. The high-temperature side heat operating valve 27 is provided, and the low-temperature heat transfer valve 24 is connected to the low-temperature heating terminal 2 upstream of the low-temperature heating terminal 2 so that the supply of the heat medium to the low-temperature heating terminal 2 is interrupted. A low temperature side thermal valve 28 is provided as a low temperature side opening / closing means for opening and closing the medium passage 24.

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 is connected to the high temperature heating medium passage 26 from the high temperature heating medium passage 26 by simply omitting the detailed description and illustration. A heat exchanger for high-temperature terminals through which a heat medium flows, a circulation fan and a heating target space that ventilate the air sucked from the space to be heated to return to the space to be heated after passing through the heat exchanger for high-temperature terminals And an exhaust fan for exhausting the air.
A floor heating apparatus provided as an example of the low temperature heating terminal 2 is also well known. Therefore, the floor heating apparatus will be briefly described by omitting the detailed description and illustration. A heat-medium distribution pipe for allowing the air to flow is installed in the floor heating panel in an embedded state.

Hereinafter, control operations of the main control unit C, the high temperature terminal control unit 3 and the low temperature terminal control unit 5 will be described.
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 includes the low temperature side operation unit 6 and the main control unit C. It is configured to be able to communicate with each.
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 has an operation switch 61 for commanding start and stop of the operation of the low temperature heating terminal 2, and a plurality of steps (in this embodiment, 9 steps) of required heating levels (corresponding to the required heating amount). Heating level setting switch 62 for setting any one of them as heating amount request information indicating the size of the required heating level, and nine lamps for displaying the required heating level set by the heating level setting switch 62 A required heating level display unit 63 and the like are provided.

  The low-temperature terminal control unit 5 then opens the low-temperature side thermal valve 28 based on the required heating level set by the heating level setting switch 62 and closes it to maintain the closed state. The open / close ratio with respect to the time is set in a plurality of stages in such a manner that the open time becomes longer as the required heating amount is larger. That is, the low temperature terminal control unit 5 is configured to function as an open / close ratio setting unit.

When the operation start 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 supply the heat medium to the high temperature heating terminal 1. 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.
Further, when the low temperature terminal control unit 5 is instructed to start the operation of the low temperature heating terminal 2 by the operation switch 61 of the low temperature side operation unit 6, the low temperature terminal control unit 5 supplies the main control unit C with the supply of the heat medium to the low temperature heating terminal 2. And a command to set the open / close ratio set based on the required heating level set by the heating level setting switch 62 to the main control unit C, and the operation switch 61 commands to stop the operation of the low-temperature heating terminal 2. Then, it is configured to instruct the main control unit C to stop the supply of the heat medium to the low temperature heating terminal 2.

  The main control unit C is instructed to supply the heat medium from the high temperature terminal control unit 3 to the high temperature heating terminal 1, and the heat control medium C is supplied from the low temperature terminal control unit 5 to the low temperature heating terminal 2. When not instructed, that is, when a high temperature side independent operation for supplying a heating medium only to the high temperature heating terminal 1 is instructed, the heating medium for supplying the temperature detected by the supply temperature sensor 23 to the high temperature heating terminal 1 A high temperature operation process for controlling the heating operation of the heating means H and operating the heat medium circulation pump 13 so as to become a high temperature set temperature (for example, 80 ° C.) set to a temperature of The open / close operation of the high temperature side thermal valve 27 is controlled so as to be in the open state.

  Further, the main control unit C is instructed to supply a heat medium from the low temperature terminal control unit 5 to the low temperature heating terminal 2 and supplies a heat medium from the high temperature terminal control unit 3 to the high temperature heating terminal 1. When not instructed, that is, when a low temperature side independent operation for supplying a heating medium only to the low temperature heating terminal 2 is instructed, the low temperature at which the temperature detected by the low temperature side temperature sensor 25 is 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 so as to reach a low temperature set temperature (for example, 60 ° C.) set to the temperature of the heat medium to be supplied to the heating terminal 2. The low temperature side thermal operation is performed so that the low temperature operation process is executed and the open / close ratio in a single cycle is periodically opened and closed based on the set open / close ratio set in the low temperature terminal control unit 5 Controls opening and closing operation of valve 28 Is constructed sea urchin.

  Further, the main control unit C is instructed to supply the heat medium from the high temperature terminal control unit 3 to the high temperature heating terminal 1 and supplies the heat medium from the low temperature terminal control unit 5 to the low temperature heating terminal 2. When commanded, that is, when simultaneous operation of supplying a heat medium to the high temperature heating terminal 1 and the low temperature heating terminal 2 is commanded, the detected temperature of the supply temperature sensor 23 becomes the set temperature for high temperature. To control the heating operation of the heating means H and to control the opening and closing operation of the high temperature side thermal valve 27 so as to be in an open state, and to perform the high temperature operation process for operating the heat medium circulating pump 13; The open / close operation of the low temperature side thermal valve 28 is controlled so as to be periodically opened and closed in such a manner that the open / close ratio in a single cycle is adjusted based on the set open / close ratio set by the low temperature terminal control unit 5. It is configured.

And in this invention, the said low temperature terminal control part 5 calculates | requires average heat-medium temperature by averaging the temperature data which sampled the detection temperature data of the said low temperature side going temperature sensor 25 during the open time in a single period, Based on the average heat medium temperature and the required heating level set by the heating level setting switch 62 (that is, heating amount request information), the opening / closing ratio is increased as the required heating amount is increased. If the required heating level is the same level, the average of the opening / closing ratios of at least some of the multiple stages of the open / close ratio corresponding to the required heating amount is set to the higher level. When the temperature of the heating medium increases, the opening time is shortened and is set in a plurality of stages.
Further, the low temperature terminal control unit 5 obtains an average heat medium temperature by averaging the temperature data obtained by sampling the temperature data detected by the low temperature side forward temperature sensor 25 in the front part during the open time in a single cycle, The open / close ratio is set based on the average heat medium temperature.
The main control unit C adjusts the time during which the low temperature side thermal valve 28 is kept open in the rear part following the front part during the open time in a single cycle, and the open / close ratio is The open / close operation of the low temperature side thermal valve 28 is controlled so that the set open / close ratio is changed and set by the low temperature terminal control unit 5.

Hereinafter, the control operations of the main control unit C and the low temperature terminal control unit 5 will be described in more detail.
The required heating level / opening / closing ratio relationship information (ie, corresponding to the required heating amount / opening / closing ratio relationship information) in which the opening / closing ratio is set in a plurality of stages according to the required heating level is a multi-stage opening / closing in accordance with the required heating level. Among the ratios, the opening / closing ratio of a part of at least the higher required heating level side (that is, the higher required heating amount side) is the same as the required heating level. In such a form, a plurality of information is set in accordance with the average heat medium temperature, and the plurality of required heating level / opening / closing ratio relationship information is associated with the average heat medium temperature in the memory of the low temperature terminal control unit 5. It is remembered.
Based on FIG. 2, the required heating level / opening / closing ratio relationship information will be described. The opening / closing ratio is set by the ratio of the opening time and the closing time with a single period of 20 minutes.
As an average heating medium temperature for setting the opening / closing ratio for setting the required heating level / opening / closing ratio relationship information, the reference temperature of the low temperature side set temperature (for example, 60 ° C), 65 ° C higher by 5 ° C than the reference temperature Four stages of 70 ° C., 10 ° C. higher than the reference temperature, and 75 ° C., 15 ° C. higher than the reference temperature, are set.
Further, the opening time becomes longer as the required heating level becomes higher, and among the nine required heating levels, the open / close ratio of each required heating level equal to or higher than the second required heating level is the same required heating level. If the average heating medium temperature becomes higher, the opening time is shortened, and the required heating level vs. opening / closing is set for each average heating medium temperature for each switching ratio setting of the reference temperature, 65 ° C, 70 ° C, and 75 ° C. Ratio related information is set in a table.
Hereinafter, the required heating level / opening / closing ratio relationship information when the average heating medium temperature for setting the opening / closing ratio is the reference temperature, 65 ° C, 70 ° C, and 75 ° C is referred to as a reference table, a table for 65 ° C, and 70 ° C, respectively. Sometimes referred to as C table, 75 ° C table.

For example, the reference table will be described as an example. As the required heating level increases from the first stage to the second stage, the third stage, ..., the ninth stage, the opening time becomes 3 minutes, 6 minutes, 8 The opening / closing ratio is set for each of the nine required heating levels in such a manner that the minutes are lengthened to 20 minutes.
Further, when the required heating level at the fifth stage is described as an example, if the required heating level is the same at the fifth stage, the average heating medium temperature for setting the switching ratio is the reference temperature, 65 ° C, 70 ° C. As the temperature increases to 75 ° C, the opening time is shortened to 12 minutes, 10 minutes, 8.5 minutes, and 7 minutes. It is set for each average heat medium temperature for setting.

In a state where the simultaneous operation is commanded, the main control unit C samples the temperature data detected by the low temperature side temperature sensor 25 every set sampling time (for example, 10 seconds), and the sampled temperature data Is transmitted to the low-temperature terminal control unit 5.
The low-temperature terminal control unit 5 sets the heating medium temperature averaging time for obtaining the average heating medium temperature for each required heating level, and the opening time of the average heating medium temperature for setting the four-stage open / close ratio at each required heating level. Is set to be shorter than the shortest opening time by a set time (for example, 1 minute).
For example, at the fifth required heating level, the shortest opening time is 7 minutes, so the heat medium temperature averaging time is set to 6 minutes, which is 1 minute shorter than the shortest opening time of 7 minutes. Will do.
And the said low temperature terminal control part 5 sets the heat medium temperature average time corresponding to the request | requirement heating level set with the heating level setting switch 62 for every single period, The set heat medium temperature An average heat medium temperature is obtained by averaging the sampling temperature data transmitted from the main control unit C during the average time, and an average heat medium temperature for setting the open / close ratio corresponding to the obtained average heat medium temperature. If the open / close ratio corresponding to the required heating level is set on the basis of the table, and the set open / close ratio set in such a way is different from the set open / close ratio set in the immediately preceding single cycle, the setting changed as such The open / close ratio is configured to be transmitted to the main control unit C.
That is, the heating medium temperature averaging time set corresponding to the required heating level set by the heating level setting switch 62 is shorter than the shortest opening time among the plurality of stages of opening times at the required heating level. Therefore, the low temperature terminal control unit 5 obtains an average heat medium temperature by averaging the temperature data obtained by sampling the temperature data detected by the low temperature side forward temperature sensor 25 in the front part during the open time in a single cycle, The opening / closing ratio is set based on the average heat medium temperature.

Incidentally, the low-temperature terminal control unit 5 sets the switching ratio that is closer to the calculated average heating medium temperature when the calculated average heating medium temperature is a temperature between the adjacent average heating medium temperatures for setting the switching ratio. The open / close ratio is set based on a table for the average heat medium temperature. However, when the calculated average heat medium temperature is the center temperature of the adjacent average heat medium temperature for setting the open / close ratio, it opens and closes based on the average heat medium temperature table for setting the higher open / close ratio. It is configured to set the ratio.
For example, when the required heating level set by the heating level setting switch 62 is the fifth stage, the sampling temperature data transmitted from the main controller C during the heating medium temperature averaging time of 6 minutes is used. Average heat medium temperature is obtained on average. When the obtained average heat medium temperature is 67 ° C., the average heat medium temperature 67 ° C. is closer to the average heat medium temperature for opening / closing ratio setting of 65 ° C. than 70 ° C. Based on the ° C table, the open / close ratio is set to 10 minutes / 10 minutes (open time / close time).

  The low temperature terminal control unit 5 sets an open / close ratio corresponding to the required heating level set by the heating level setting switch 62 based on the reference table when the low temperature side independent operation is commanded. Is configured to do.

When the high temperature side single operation is commanded while the gas burner 9 is extinguished, the main control unit C opens the high temperature side thermal valve 27 and closes the low temperature side thermal valve 28. In the state where the heat medium circulating pump 13 is operated and the heat medium is circulated through the high-temperature heat medium passage 26, the combustion blower 10 is operated, the fuel intermittent valve 15 and the fuel adjustment valve 16 are opened, and the igniter In order to adjust the fuel supply amount to the gas burner 9 so that the detected temperature of the supply temperature sensor 23 becomes the high temperature set temperature, the fuel adjustment valve 16 is operated. And the rotational speed of the combustion blower 10 is adjusted so that the combustion air flow rate is in accordance with the fuel supply amount.
The main control unit C closes the fuel intermittent valve 15 and the fuel adjustment valve 16 when the high temperature side single operation is instructed to stop when the high temperature side single operation is being executed. After the valve closing, when the set time for post-purge elapses, a fire extinguishing process for stopping the combustion blower 10 is executed. After the fire extinguishing process, the high temperature side thermal valve 27 is closed and the heat medium circulation pump 13 is stopped. .

Further, when the low temperature side independent operation is commanded while the gas burner 9 is extinguished, the main control unit C opens the low temperature side thermal valve 28 and closes the high temperature side thermal valve 27. In this state, the heat medium circulation pump 13 is operated and the heat medium is circulated through the low-temperature heat medium passage 24, and the ignition process is executed. Thereafter, the temperature detected by the low-temperature side forward temperature sensor 25 is the low temperature. The combustion blower adjusts the opening of the fuel adjustment valve 16 so as to adjust the amount of fuel supplied to the gas burner 9 so as to reach the set temperature for combustion, and sets the amount of combustion air flow according to the amount of fuel supplied. 10 and adjusting the opening / closing ratio in a single cycle based on the set opening / closing ratio set by the low temperature terminal control unit 5 to periodically open / close the low temperature side thermal valve 28. Control.
The main control unit C executes the fire extinguishing process when the low temperature side single operation is instructed to stop when the low temperature side single operation is being executed, and after the fire extinguishing process, The thermal valve 28 is closed and the heat medium circulation pump 13 is stopped.

In addition, when the simultaneous operation is commanded while the gas burner 9 is extinguished, the main control unit C opens the high temperature side thermal valve 27 and opens the low temperature side thermal valve 28. In the state where the heat medium circulation pump 13 is operated and the heat medium is circulated through the high temperature heat medium flow path 26 and the low temperature heat medium flow path 24, the ignition process is executed. The opening of the fuel adjustment valve 16 is adjusted so as to adjust the fuel supply amount to the gas burner 9 so that the detected temperature becomes the set temperature for high temperature, and the combustion air ventilation amount corresponding to the fuel supply amount is obtained. In this manner, the rotational speed of the combustion blower 10 is adjusted, and the open / close ratio in a single cycle is periodically adjusted based on the set open / close ratio set by the low temperature terminal control unit 5. 28 is controlled to open and close.
Further, the main control unit C, in the simultaneous operation, in the front part during the open time in a single cycle, when the set open / close ratio is changed and set from the immediately preceding single cycle by the low temperature terminal control unit 5, In the rear part following the front part during the open time in the single cycle, the time for maintaining the low temperature side thermal valve 28 in the open state is adjusted, and the set open / close ratio is changed from the previous single cycle. If not, the open / close ratio is changed to the set open / close ratio set by the low-temperature terminal control unit 5 by adjusting the open time to the open time set in the immediately preceding single cycle. Thus, the opening / closing operation of the low temperature side thermal valve 28 is controlled.
For example, when the required heating level is the fifth stage and the set opening / closing ratio of the immediately preceding single cycle is 8.5 minutes / 11.5 minutes, at the front part during the open time in the single cycle When the set opening / closing ratio is changed to 7 minutes / 13 minutes, when the time during which the low temperature side thermal valve 28 is kept open in the single cycle reaches 7 minutes, the low temperature side thermal valve 28 is turned on. By closing the valve, the opening / closing operation of the low temperature side thermal valve 28 is controlled so that the opening / closing ratio becomes the set opening / closing ratio changed and set by the low temperature terminal control unit 5.

  The main control unit C is instructed to start the supply of a heat medium from the low temperature terminal control unit 5 to the low temperature heating terminal 2 during execution of the high temperature side single operation, and when the low temperature side single operation is performed. When the start of supply of the heat medium from the high temperature terminal control unit 3 to the high temperature heating terminal 1 is instructed during the execution of the above, the simultaneous operation is instructed.

When the main control unit C is instructed to stop the supply of the heat medium from the high temperature terminal control unit 3 to the high temperature heating terminal 1 during execution of the simultaneous operation, the main control unit C closes the high temperature side thermal valve 27. The circulation of the heat medium through the high temperature heat medium passage 26 is stopped, and the low temperature side single operation is executed.
When the main control unit C is instructed to stop the supply of the heating medium from the low temperature terminal control unit 5 to the low temperature heating terminal 2 during the simultaneous operation, the low temperature side thermal valve 28 is closed. The circulation of the heat medium through the low-temperature heat medium passage 24 is stopped, and the high-temperature side single operation is executed.
The main control unit C stops the supply of the heat medium from the high temperature terminal control unit 3 to the high temperature heating terminal 1 and the low temperature heating terminal 2 from the low temperature terminal control unit 5 during the simultaneous operation. When the stop of the heating medium supply is instructed at the same time, the fire extinguishing process is executed, and after the extinguishing process, the high temperature side heat valve 27 and the low temperature side heat valve 28 are closed, and the heat medium circulation pump 13 is closed. Stop.

Next, the control operation of the main control unit C will be described based on the flowchart shown in FIG.
When the simultaneous operation is commanded, the main control unit C controls the heating operation of the heating means H so that the detected temperature of the supply temperature sensor 23 becomes the set temperature for high temperature, and the heating medium The high temperature operation process for operating the circulation pump 13 is executed, the high temperature side thermal valve 27 is opened, and the open / close ratio in a single cycle becomes the set open / close ratio set by the low temperature terminal control unit 5. The low temperature side thermal valve 28 is controlled to open and close, and the temperature data detected by the low temperature side forward temperature sensor 25 is sampled at each set sampling time, and the sampling temperature data is transmitted to the low temperature terminal control unit 5. (Steps # 1-6).

When the high temperature side independent operation is commanded, the main control unit C executes the high temperature operation processing, opens the high temperature side thermal valve 27, and the low temperature side thermal valve 28 is closed (steps # 1, 2, 7 to 10).
The main control unit C controls the heating operation of the heating means H so that the temperature detected by the low temperature side forward temperature sensor 25 becomes the low temperature set temperature when the low temperature side independent operation is commanded. In addition, low temperature operation processing for operating the heat medium circulation pump 13 is executed, the high temperature side thermal valve 27 is closed, and an open / close ratio in a single cycle is set by the low temperature terminal control unit 5. The low temperature side thermal valve 28 is controlled to open and close so that the set open / close ratio is obtained (steps # 1, 2, 7, 11 to 13).
When the operation command is not commanded, the main control unit C stops the heating operation of the heating means H, stops the heat medium circulation pump 13 and stops the heat source machine operation, and sets the high temperature The side thermal valve 27 is closed, and the low temperature side thermal valve 28 is closed (steps # 1, 14 to 16).

[Another embodiment]
Next, another embodiment will be described.
(A) The procedure for obtaining the average heat medium temperature by the low temperature terminal control unit 5 and setting the open / close ratio based on the obtained average heat medium temperature is the procedure exemplified in the above embodiment, that is, a single cycle. The temperature data obtained by sampling the detected temperature data of the low temperature side temperature sensor 25 in the front part during the open time in the time is averaged to obtain the average heat medium temperature, and the switching ratio is set based on the average heat medium temperature. It is not limited.
For example, the temperature data obtained by sampling the temperature data detected by the low temperature side temperature sensor 25 over the entire length or substantially the entire length of the open time in a single cycle is averaged to obtain an average heat medium temperature, and the open / close ratio based on the average heat medium temperature The procedure for setting can be adopted.
In this case, the main control unit C samples the detected temperature data of the low-temperature side going temperature sensor 25 every set sampling time in the state where the simultaneous operation is commanded as in the above-described embodiment, and performs the sampling. The configured temperature data is configured to be transmitted to the low temperature terminal control unit 5.
And the low temperature terminal control part 5 averages the sampling temperature data transmitted from the main control part C over the full length of the open time defined by the open / close ratio set in the immediately preceding single period for every single period. The average heating medium temperature is calculated, the switching ratio is set based on the average heating medium temperature table for setting the switching ratio corresponding to the calculated average heating medium temperature, and the set switching ratio set as such is the main control. It is configured to transmit to part C.
Note that the low temperature terminal control unit 5 is configured to set the open / close ratio based on the reference table in the first single cycle of the simultaneous operation.

(B) The procedure for setting the open / close ratio according to the average heat medium temperature by the low temperature terminal control unit 5 is the procedure exemplified in the above embodiment, that is, a plurality of preset required heating amounts versus open / close ratio relationships. Of the information, the procedure is not limited to the procedure for setting the open / close ratio based on the required heating amount / open / close ratio relationship information selected according to the average heat medium temperature.
For example, a linear equation such as the following equation 1 for obtaining the open time y from the difference x between the average heat medium temperature and the reference temperature (60 ° C.) is set for each required heating level, and the set equation The opening time y corresponding to the average heat medium temperature may be obtained based on the above, and the open / close ratio may be set.

y = T-αx ......... (Formula 1)
However, T is an open time set for each required heating level in the reference table as shown in FIG. 2, and α is an inclination set for each required heating level.
For example, in the mathematical expression corresponding to the fifth stage heating request level, the open time of the fifth stage heating request level in the reference table is 12 minutes, and the slope is set to 0.4, for example. Equation 2 is obtained.
y = 12−0.4x (2)

(C) If the required heating amount is the same step, when the average heating medium temperature is increased, the opening / closing ratio is set to a plurality of steps in a form in which the opening time is shortened. Of the open / close ratios of the above, the part of the side with the larger required heating amount, that is, the open / close ratio of the required heating amount of the second stage or more among the nine stages of required heating quantity is targeted. You may comprise so that the opening-and-closing ratio of all the several steps according to heating amount may be made into object.

(D) As a specific example of the heating amount request information indicating the magnitude of the required heating amount, the information described in the above embodiment, that is, the required heating level in a plurality of stages indicating the required heating amount in stages. It is not limited.
For example, a target space temperature detecting means for detecting a temperature of a heating target space to be heated by the low temperature heating terminal 2 and a target heating temperature setting means for setting a target heating temperature for heating the heating target space are provided, You may comprise so that the temperature difference of the target heating temperature set by the target heating temperature setting means and the detection temperature of the said object space temperature detection means may be used as heating amount request information.

(E) The heating means H for heating the heating medium is not limited to the case where the heating source H is provided with a burner such as the gas burner 9 as the heating source as in the above embodiment. For example, an electric heater is used as the heating source. It may be provided.

Block diagram showing overall configuration of heating medium supply equipment Figure showing required heating level vs. switching ratio relation information The figure which shows the flowchart of control action

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 High temperature heating terminal 2 Low temperature heating terminal 5 Open / close ratio setting means 8 Heat source side heat medium passage 8e Heat medium delivery outlet 8i Heat medium return inlet 13 Heat medium circulation means 23 Supply temperature detection means 24 Low temperature heat medium passage Flow path 25 Low temperature side forward temperature setting means 26 High temperature heat medium flow path 27 High temperature side opening / closing means 28 Low temperature side opening / closing means C Control means H Heating means

Claims (4)

Heat medium delivery outlet and heat medium return in the heat source side heat medium passage where the high temperature heating medium passage provided with the high temperature heating terminal allows the heat medium to flow through the heating means for heating the heat medium It is provided in a state connected to the entrance for
A low-temperature heat medium flow path provided with a low-temperature heating terminal includes a flow path portion between the heat medium return inlet and the heating means in the heat source side heat medium flow path and the heat medium return inlet. And connected to the
A heat medium circulating means is provided in the heat source side heat medium flow path to flow the heat medium toward the heat medium delivery outlet,
High temperature side opening / closing means for opening and closing the high temperature heat medium passage so as to intermittently supply the heat medium to the high temperature heating terminal;
Low temperature side opening and closing means for opening and closing the low temperature heating medium passage so as to intermittently supply the heating medium to the low temperature heating terminal;
Supply temperature detection means for detecting the temperature of the heating medium delivered from the outlet for delivering the heating medium;
Based on the heating amount request information indicating the size of the required heating amount, the opening / closing ratio between the opening time for maintaining the low temperature side opening / closing means in the open state and the closing time for maintaining the closed state is increased as the required heating amount increases. Open / close ratio setting means for setting in a plurality of stages in the form of lengthening,
When the simultaneous operation of supplying the heat medium to the high temperature heating terminal and the low temperature heating terminal is commanded, the detected temperature of the supply temperature detecting means is set to the temperature of the heat medium for supplying to the high temperature heating terminal The heating operation of the heating means is controlled to reach a set temperature, the opening / closing operation of the high temperature side opening / closing means is controlled to be in the open state, and the opening / closing ratio in a single cycle is controlled by the opening / closing ratio setting means. A heating medium supply facility provided with control means for controlling the opening and closing operation of the low temperature side opening and closing means so as to periodically open and close in a form adjusted based on a set opening and closing ratio,
Low temperature side forward temperature detection means for detecting the temperature of the heat medium supplied to the low temperature heating terminal through the low temperature heat medium passage,
When the opening / closing ratio setting means is instructed to simultaneously supply a heating medium to the high temperature heating terminal and the low temperature heating terminal, the detected temperature data of the low temperature side forward temperature detection means during an open time in a single cycle The temperature data sampled is averaged to obtain the average heat medium temperature, and based on the average heat medium temperature and the heating amount request information, the opening / closing ratio is increased in multiple stages in the form in which the opening time is lengthened as the required heating amount increases. If the required heating amount is the same step, the average heating medium is set to the opening / closing ratios of at least some of the multiple stages of the opening / closing ratios corresponding to the required heating amount. Heat medium supply equipment configured to be set in multiple stages in a form that shortens the opening time when the temperature rises. The open / close ratio setting means obtains an average heat medium temperature by averaging the temperature data obtained by sampling the detected temperature data of the low temperature side forward temperature detection means in the front part during the open time in a single cycle, and calculates the average heat It is configured to set the open / close ratio based on the medium temperature,
The control means adjusts the time during which the low temperature side opening / closing means is kept open in the rear part following the front part during the opening time in a single cycle, and the opening / closing ratio is set to the opening / closing ratio setting means. The heating medium supply facility according to claim 1, wherein the opening / closing operation of the low-temperature side opening / closing means is controlled so that the set opening / closing ratio is changed and set.   The open / close ratio setting means obtains an average heat medium temperature by averaging the temperature data obtained by sampling the detected temperature data of the low temperature side forward temperature detection means over the entire length or substantially the entire length of the open time in a single cycle, and calculates the average heat The heating medium supply facility according to claim 1, wherein the opening / closing ratio is set based on the medium temperature. The relationship between the required heating amount and the opening / closing ratio relationship information in which the opening / closing ratio is set in a plurality of stages according to the required heating amount is at least a part of the side having the larger required heating amount among the opening / closing ratios in the plurality of stages according to the requested heating amount If the average heating medium temperature becomes higher if the required heating amount is the same stage as the opening / closing ratio of the stage, the opening time is shortened, and a plurality is set according to the average heating medium temperature,
The opening / closing ratio setting means is configured to set an opening / closing ratio based on the required heating amount / opening / closing ratio relationship information selected according to the average heat medium temperature among the plurality of required heating amount / opening / closing ratio relationship information. The heating medium supply equipment according to any one of claims 1 to 3.

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