JP4319640B2 - Hot water use system - Google Patents

Description

  The present invention provides a hot water use system, and in particular, supplies hot water heated and generated by a heat source machine to a heating terminal disposed in a room (for example, a bathroom or other living room), thereby enabling room heating or bathroom mist. The present invention relates to a hot water use system for performing saunas and the like.

As this type of hot water utilization system, there is a system equipped with a heat source device including an air supply fan that supplies combustion air to a gas burner that heats a heat exchanger, and a heating terminal disposed indoors. In this, the hot water heated and generated by the heat source device is forcedly circulated between the heat source device and the heating terminal, and the room is heated by heat from a radiator in the heating terminal through which the hot water flows. Etc. can be heated.
As a heating terminal, a long-time use terminal used for a relatively long time, such as a heat-dissipating mat or panel heater for floor heating, and conversely, like a bathroom heating terminal, There is a short-time use terminal that is used only for a relatively short time before bathing or during bathing.
Recently, a mist sauna apparatus that sprays a hot water mist of about 60 ° C. in the bathroom while heating the bathroom at the bathroom heating terminal has begun to be widely used. It is classified as a short-time use terminal that has a shorter use time than a mat or the like.

On the other hand, when the bathroom is heated or the mist sauna device is operating, if the preparation time until the temperature or humidity in the bathroom rises to the target value is long, the waiting time from when the operation switch is turned on until when the bath can be taken becomes longer. That is inconvenient. In particular, when the mist sauna device is used, the heat of hot air discharged from the bathroom heating terminal to the bathroom is deprived as the heat of vaporization of the hot water mist until water vapor is saturated (100% humidity) in the bathroom. Therefore, there is an inconvenience that the preparation time until the bathroom is heated to the set temperature and the water vapor is saturated, that is, the waiting time is particularly long.
Further, the heat generation capacity of the heat source device increases as the amount of gas supplied to the gas burner incorporated therein and the rotational speed of the air supply fan increase, but as the rotational speed of the air supply fan increases. Rotating sound and blowing sound become loud and noise problems occur. For this reason, in this type of appliance, the upper limit combustion amount of the gas burner is generally set in order to comply with a noise reference value (for example, 45 dB). This is because if the upper limit combustion amount of the gas burner is suppressed to a noise reference value or less, the upper limit rotational speed of the air supply fan is also lowered accordingly, thereby reducing the rotation sound and the blowing sound of the air supply fan.
Japanese Patent Laid-Open No. 2003-462 Japanese Patent Laid-Open No. 6-88629

  However, since the use time of short-time use terminals such as mist sauna devices and bathroom heating terminals is generally shorter than that of floor heating, noise is generated in a short time for operating the short-time use terminal. However, it is acceptable because the discomfort time given to people is short. In spite of this, in the conventional devices described above, the heat source device is uniform regardless of whether it is a long-time use terminal such as a heat dissipating mat for floor heating or a short-time use terminal such as a mist sauna device. Since the heat generation capability is suppressed and noise countermeasures are taken, the amount of heat generated by the short-time use terminal cannot be increased sufficiently. For this reason, when the short-time use terminal is, for example, a mist sauna device, there arises a problem that preparation time before bathing cannot be shortened.

The present invention has been made in view of such points.
“A heat dissipating mat for floor heating or a panel heater for heating, which is a long-term use terminal that uses the heat of the hot water generated by the heat source ,
A bathroom heating terminal which is a short-time use terminal having a shorter use time than the long-time use terminal using the heat of hot water generated by heating in a heat source machine, or a combination of a mist sprayer and a bathroom heating terminal which sprays hot water mist on the bathroom A mist sauna device comprising:
A first operation switch for operating the long-term use terminal;
A second operation switch for operating the short-time use terminal ,
The heat source device includes a gas burner that heats and generates the hot water, a gas amount adjustment valve provided in a gas circuit to the gas burner, and a gas combustion for which the rotation speed changes in accordance with the opening degree of the gas amount adjustment valve Air supply fan,
In the "warm water use system that burns the gas burner while suppressing the rotational speed of the air supply fan to a predetermined upper limit rotational speed or less", it is possible to perform rational control in consideration of the characteristics regarding the usage time of each terminal. The challenge is to make it.

[Invention of Claim 1]
The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
“ The upper limit rotational speed when the first operation switch is operated is set to a first upper limit rotational speed capable of suppressing noise caused by rotation of the air supply fan to a reference value or less,
The upper limit number of revolutions when the second operation switch is operated is set to a second upper limit number of revolutions greater than the first upper limit number of revolutions ”.
According to the above technical means, when the first operation switch is operated, the rotation speed of the air supply fan is equal to or lower than the first upper limit rotation speed (the rotation speed at which noise caused by the rotation of the air supply fan can be suppressed to a reference value or less. ). On the other hand, since the opening of the gas amount adjusting valve has a value corresponding to the rotation speed of the air supply fan, a gas having an appropriate excess air ratio is supplied to the gas burner and burned.
Therefore, it is possible to operate the heat dissipation mat for floor heating or the panel heater for heating that is a long-time use terminal while operating the air supply fan at the first upper limit rotation speed or less that can suppress the noise to a reference value or less, The noise can be prevented.
On the other hand, the upper limit rotational speed when the second operation switch is operated is set to a second upper limit rotational speed that is larger than the first upper limit rotational speed. Accordingly, in this case, the upper limit value of the rotation speed of the air supply fan and the opening of the gas amount adjusting valve is set to the first upper limit rotation speed, that is, larger than that of the terminal operating for a long time. Therefore, the amount of heat generated by the gas burner increases. Therefore, in this case, when preparing the mist sauna until the temperature and humidity in the bathroom are raised to the target values, the heat for heating released from the bathroom heating terminal to the bathroom is taken away as the heat of vaporization of the hot water mist. However, a large amount of heat is required to be supplied from the heat source device to the mist sauna apparatus. When using a mist sauna device that is a short-time use terminal, the upper limit of the rotation speed of the air supply fan and the opening of the gas amount adjustment valve is larger than that during operation of the long-time use terminal, and the amount of heat generated by the gas burner increases. It is.
Therefore, it is possible to shorten the waiting time until bathing in the mist sauna.

The present invention has the following specific effects.
According to the first aspect of the present invention, when the duration of noise caused by the rotation of the air supply fan is short enough to be acceptable (when using a short-time use terminal), the heat generation amount of the gas burner is increased. On the contrary, when the terminal is used for a long time, the noise of the heat source unit can be suppressed to a reference value or less, so that rational control can be performed in consideration of the characteristics of each terminal.
Moreover, in the said invention, the waiting time until it takes a bath in the mist sauna which requires a lot of heat at the time of preparation can be shortened.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, a hot water utilization system according to an embodiment of the present invention includes a bathroom heating terminal (1) that heats a bathroom (B), and a mist spray nozzle that sprays hot water mist on the bathroom (B). 20) and a mist device (2) consisting of a mist device main body (21), and a heat dissipating mat (5) for floor heating arranged in a living room (R) (may be a bathroom or a dressing room) and for heating Panel heater (4) and a heat source device (6) for heating the bathroom heating terminal (1), the panel heater (4), and the like. In the present embodiment, the combination of the mist device (2) and the bathroom heating terminal (1) corresponds to the mist sauna device described as the above-mentioned invention specific matter.

Details of each part will be described below.
[Heat source machine (6)]
The heat source machine (6) includes an air supply fan (63) that supplies combustion air to the can body (64), an air dispersion plate (65), a gas burner (61), and a heat exchanger arranged sequentially above the fan. The gas circuit to the gas burner (61) is provided with a gas amount adjusting valve (62).
The heat exchanger (60) is connected to the bathroom heating terminal (1) and the like via the hot water circulation circuit (66), and the hot water circulation circuit (66) is provided with a circulation pump (67). .

[Bathroom heating terminal (1)]
The bathroom heating terminal (1) includes a heat exchanger (10) for heat dissipation through which hot water from the hot water circulation circuit (66) drawn from the heat source device (6) flows, and heat from the heat exchanger (10). A heat dissipation fan (11) to be discharged into the bathroom (B), a temperature sensor (15) and a humidity sensor (14) for detecting the temperature and humidity in the bathroom (B), and these heat exchangers (10 ) And the like are disposed on the ceiling of the bathroom (B). Moreover, the warm air blown out from the heat exchanger (10) by the heat radiating fan (11) is supplied to the bathroom (B) via the louver (13) covering the lower end opening of the casing (12). .

[Mist sauna equipment]
The mist sauna device includes a mist water supply circuit (22) for supplying hot water to a mist spray nozzle (20) disposed on the ceiling of the bathroom (B), and the mist water supply circuit (22) A secondary side circuit of the liquid heat exchanger (23) is configured. On the other hand, the mist heating circuit (24) that short-circuits the outgoing pipe (660) and the return pipe (661) of the hot water circulation circuit (66) drawn out from the heat source machine (6) is used for the liquid heat exchanger (23). A primary circuit is configured.
The water supply circuit for mist (22) includes a mist temperature sensor (27) for detecting the temperature of the hot water discharged from the liquid-to-liquid heat exchanger (23), and an opening and closing for mist upstream of the liquid-to-liquid heat exchanger (23). A valve (26) and a check valve (29) for preventing back flow upstream are provided.

A remote controller (7) for operating the mist device (2) and the bathroom heating terminal (1) is disposed on the wall surface of the bathroom (B), and the remote controller (7) has a bathroom as a second operation switch. A heating switch (70), a mist sauna switch (71), a temperature control button (72), and a display unit (73) for displaying an operation state are provided.
The operation signals of the bathroom heating switch (70) and the mist sauna switch (71), and further the output of the humidity sensor (14) are applied to the mist control device (28) in the mist device body (21). . The mist control device (28) is connected to the mist on-off valve (26), the mist temperature sensor (27) and the flow control valve (25) by wiring, as well as a remote control (7) and a bathroom heating terminal ( The temperature sensor (15) in 1) is connected to a heat source unit control device (68) incorporated in the heat source unit (6) via a communication cable (not shown).

[Panel heater (4), Heat dissipation mat (5)]
The panel heater (4) for heating and the heat dissipating mat (5) for floor heating installed in the living room (R) are the outgoing pipe (660) of the hot water circulation circuit (66) drawn from the heat source machine (6). Hot water is supplied from the panel heater branch circuit (40) that short-circuits the return pipe (661) and the heat dissipating mat branch circuit (50).
The panel heater branch circuit (40) is provided with an on-off valve (42) that is opened and closed by operating the indoor heating switch (41), and the heat dissipating mat branch circuit (50) is a floor heating switch. An on-off valve (52) that is opened and closed by the operation of (51) is provided. In the present embodiment, the indoor heating switch (41) and the floor heating switch (51) correspond to the first operation switch which is the specific matter of the invention described above.

The operation signals of the indoor heating switch (41) and the floor heating switch (51) are applied to the heat source machine control device (68) in the heat source machine (6).
In the present embodiment, the panel heater (4) and the heat dissipating mat (5) are used continuously for a long time compared to the bathroom heating terminal (1) and the mist device (2). these panels heaters (4) and the heat dissipation mat (5) corresponds to the length time use terminal described as above subject matter. Meanwhile, bathroom heater terminal (1) or mist sauna apparatus, corresponding to the short time using terminal described as above subject matter.

[Operation]
The heat source machine control device (68) executes the control shown in the flowchart of FIG. Hereinafter, according to the flowchart of the same figure, each operation | movement, such as bathroom heating operation | movement, mist sauna operation | movement, floor heating operation | movement, is demonstrated.
In the memory of the microcomputer constituting the heat source device control device (68), a fan control table for storing the rotation speed of the air supply fan (63) set for each opening degree of the gas amount adjusting valve (62). When the opening degree of the gas amount adjusting valve (62) is determined, the rotation speed of the air supply fan (63) corresponding to the opening degree can be selected from the fan control table. Thus, the air fan (63) having the selected rotational speed supplies a necessary amount of air to the gas burner (61) portion so that the gas burner (61) can be completely burned.

《Bathroom heating operation》
First, when the bathroom heating terminal (1) which is a short-time use terminal is operated, the bathroom heating switch (70) of the remote controller (7) is turned on. Then, in step (ST1) in FIG. 2, it is confirmed that the bathroom heating switch (70) is turned on, and in step (ST2), the upper limit opening X of the gas amount adjusting valve (62) is set to fully open (opening 100%). The Then, the rotational speed of the air supply fan (63) corresponding to the upper limit opening degree X is determined by the fan control table stored in the memory of the microcomputer. That is, the upper limit rotational speed Y of the air supply fan (63) (corresponding to the aforementioned “second upper limit rotational speed”) is determined depending on the upper limit opening degree X.

  Next, in step (ST3), the air supply fan (63) is rotated at the upper limit rotational speed Y, the circulation pump (67) is activated, the ignition device (not shown) is activated, and the gas amount adjusting valve (62) is The gas burner (61) is burned at the upper limit opening X. As a result, in this embodiment, the gas burner (61) burns with a large heat generation capacity of 14000 Kcal, and the circulating water in the hot water circulation circuit (66) is heated and heated in the heat exchanger (60) to be a bathroom heating terminal ( It begins to be supplied to the heat exchanger (10) of 1). Therefore, in step (ST4), when the radiator fan (11) of the bathroom heating terminal (1) is operated and the warm air generated by the heat exchanger (10) is discharged from the louver (13) to the bathroom (B), Since the gas burner (61) burns with the large heat generating capacity, the temperature of the bathroom (B) rises quickly.

  Next, in step (ST5), the detected temperature S of the temperature sensor (15) is compared with the set temperature T set by the remote controller (7). When both temperatures are equal, in step (ST6) the gas amount adjusting valve (62 ) Is reduced to an opening that can prevent noise (the opening degree of the valve so that the rotation sound and the blowing sound of the air supply fan 63 are below the noise reference value). Then, the fan control table stored in the memory of the microcomputer is referred to, and the rotational speed of the air supply fan (63) is selected corresponding to the opening degree of the gas amount adjusting valve (62). The air supply fan (63) rotates by the number. Therefore, the noise caused by the rotation of the air supply fan (63) is maintained within the reference value as described above.

  When it is confirmed that the bathroom heating switch (70) provided on the remote control (7) and the mist sauna switch (71) described later are turned on again and the operation of stopping the bathroom heating or the mist sauna described later is performed. In step (ST8), the heat dissipating fan (11) is stopped, the main valve (not shown) inserted in the gas circuit to the gas burner (61) is closed to extinguish the gas burner (61), and the circulation pump (67) And stop the air supply fan (63). Thereby, bathroom heating operation stops.

《Mist sauna operation》
When it is confirmed in step (ST9) that the mist sauna switch (71) of the remote control (7) has been turned on, as in the case of the bathroom heating operation described above, in step (ST2) the gas amount adjusting valve (62 ) Is set to be fully open (opening 100%). Thus, the upper limit rotational speed Y of the air supply fan (63) is determined depending on the upper limit opening degree X. Therefore, also in the mist sauna operation, the gas burner (61) burns with a large heat generation capacity, and the temperature of the bathroom (B) rises quickly.

  On the other hand, during the mist sauna operation, the mist control device (28) is operated in parallel with the control operation by the heat source device control device (68) of the heat source device (6), and thereby the mist branched from the hot water circulation circuit (66). The flow control valve (25) inserted into the heating circuit (24) is maintained at a predetermined opening, and the mist opening / closing valve (26) is opened. Then, the hot water flowing through the mist heating circuit (24) heats the mist water supply circuit (22) via the liquid heat exchanger (23), and thereby the hot water mist is ejected from the mist spray nozzle (20). .

Then, when the humidity detected by the humidity sensor (14) for detecting the humidity of the bathroom (B) reaches about 100% and the temperature detected by the temperature sensor (15) rises to about 40 ° C, the preparation for the mist sauna is completed. A voice guide indicating this is output from a speaker built in the remote controller (7).
In this case, when preparing the mist sauna, the rotation speed of the air supply fan (63) and the opening amount of the gas amount adjustment valve (62) are set to the upper limit opening degree X and the upper limit rotation speed Y so that the gas burner has a large heat generation capacity. Because it burns in, the preparation time of the mist sauna can be shortened.

《Floor heating operation etc.》
When the indoor heating switch (41) and floor heating switch (51) for operating the panel heater (4) and heat dissipating mat (5) are turned on, the on-off valves (41) (51) corresponding to these switches (41) (51) 42) (52) opens.
On the other hand, when the indoor heating switch (41) or the floor heating switch (51) is turned on, as shown in step (ST12) of FIG. 2, the upper limit opening X of the gas amount adjusting valve (62) is 80% of full opening. Set to Then, the rotational speed of the air supply fan (63) corresponding to the upper limit opening degree X is determined by the fan control table stored in the memory of the microcomputer. That is, the upper limit rotational speed Y of the air supply fan (63) is determined depending on the upper limit opening degree X. In this case, when the air supply fan (63) rotates at the upper limit rotational speed Y (corresponding to the “first upper limit rotational speed” which is the specific matter of the above-described invention), the rotation and air flow of the air supply fan (63) The noise caused by is set to be a reference value (for example, 45 dB) or less.

  Next, in step (ST13), the air supply fan (63) is rotated at the upper limit rotational speed Y, the circulation pump (67) is operated, the ignition device (not shown) is operated, and the gas amount adjusting valve (62) is turned on. The gas burner (61) is burned at the upper limit opening X. As a result, in this embodiment, the gas burner (61) burns with a rated heat generation capacity of 12000 Kcal, and the circulating water in the hot water circulation circuit (66) is heated by the heat exchanger (60) to increase the temperature of the panel heater (4). The floor heating of the living room (R), etc. is started until the stop operation by the indoor heating switch (41) or the floor heating switch (51) is confirmed in step (ST14). Done.

  In this case, when the panel heater (4) and heat dissipating mat (5), which are terminals used for a long time, operate, the gas burner (61) burns with the rated heat generation capacity as described above, and the air supply fan (63) The upper limit number of revolutions Y is smaller than when the bathroom heating terminal (1), which is a short-time use terminal, is in operation. Therefore, as described above, it is possible to prevent noise during operation of the panel heater (4) and the heat dissipating mat (5), which are terminals used for a long time.

Explanatory drawing of the water circuit and control circuit which concern on embodiment of this invention Flow chart explaining control operation

Explanation of symbols

(1) ・ ・ ・ Bathroom heating terminal
(2) ... Mist device
(4) ... Panel heater
(5) ... Heat dissipation mat
(6) ... Heat source machine
(70) ・ ・ ・ Bathroom heating switch
(71) ・ ・ ・ Mist sauna switch
(41) ... Indoor heating switch
(51) ・ ・ ・ Floor heating switch
(61) ・ ・ ・ Gas burner
(62) ・ ・ ・ Gas adjustment valve
(63) ... Air supply fan

Claims (1)

A heat dissipating mat for floor heating or a panel heater for heating, which is a long-term use terminal that uses the heat of hot water generated by heating in a heat source device ;
A bathroom heating terminal which is a short-time use terminal having a shorter use time than the long-time use terminal using the heat of hot water generated by heating in a heat source machine, or a combination of a mist sprayer and a bathroom heating terminal which sprays hot water mist on the bathroom A mist sauna device comprising:
A first operation switch for operating the long-term use terminal;
A second operation switch for operating the short-time use terminal ,
The heat source device includes a gas burner that heats and generates the hot water, a gas amount adjustment valve provided in a gas circuit to the gas burner, and a gas combustion for which the rotation speed changes in accordance with the opening degree of the gas amount adjustment valve Air supply fan,
In a hot water utilization system for burning the gas burner while suppressing the rotation speed of the air supply fan to be equal to or lower than a predetermined upper limit rotation speed,
The upper limit rotational speed when the first operation switch is operated is set to a first upper limit rotational speed that can suppress noise caused by the rotation of the air supply fan below a reference value,
The hot water utilization system , wherein the upper limit rotation speed when the second operation switch is operated is set to a second upper limit rotation speed that is larger than the first upper limit rotation speed .

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