JP5047931B2 - Bathroom heater with sauna function - Google Patents

Description

  The present invention relates to a bathroom heater with a sauna function that can make a bathroom in a hot and humid sauna state.

  The bathroom heater is generally provided in the main ventilation path connecting the inlet and the outlet communicating with the bathroom, and in the main ventilation path, and the air in the bathroom is sucked in from the inlet and blown out from the outlet to the bathroom. A fan and a heat exchanger that is provided in a portion of the ventilation path upstream of the circulation fan and heats air passing through the portion are provided. The air sucked from the suction port is heated by the heat exchanger and blown. Hot air is blown into the bathroom from the exit to heat the bathroom.

  Furthermore, as such a bathroom heater, it is equipped with a nozzle that ejects water to the heat exchanger, and by mixing water generated by evaporating the water ejected to the humidifying heat exchanger into the air flowing through the air passage, Some with a sauna function that makes the bathroom a hot and humid sauna (steam sauna) are also known.

  In such a bathroom heater with a sauna function, water resources are wasted if the water ejected from the nozzles does not evaporate. Moreover, when water adheres to a circulation fan or a blower outlet without evaporating, the malfunction that impurities, such as calcium carbonate, precipitate on those surfaces will arise. Furthermore, water that has become water vapor may drop into the bathroom and hit the bather's body, causing discomfort.

  Therefore, the steam generator described in Patent Document 1 sprays water having a droplet diameter of 100 to 500 μm from the nozzle at a spray rate of 100 to 300 cc / min into the space with the heat exchanger activated. The steam efficiency is increased by setting an appropriate spray state.

Moreover, the steam sauna apparatus described in Patent Document 2 diffuses hot water from a plurality of hot water outlets of the spout hot water pipe on the heat exchange promoting member formed by combining a number of thin plates, and the heat exchange promoting member Steam efficiency is increased by allowing hot water to flow downward from the top. In addition, the hot water which flowed down without becoming water vapor | steam is discharged | emitted through the drain pan installed below the heat exchange acceleration | stimulation material.
JP 2006-109869 A JP-A-6-63102

  However, in the steam generator described in Patent Document 1, in order to increase the steam generation capacity (humidification capacity), it is necessary to increase the size of the heat exchanger itself, and accordingly, the apparatus also increases in size. There was a problem.

  Moreover, in the steam sauna apparatus described in Patent Document 2, since hot water flows downward from the upper part of the heat exchange promoting member, the apparatus height increases, and it is difficult to embed it particularly in the ceiling. there were.

  This invention makes it the subject to provide the bathroom heater with a sauna function which can raise evaporation efficiency, without enlarging an apparatus in view of the above point.

In order to solve the above-mentioned problems, the present invention provides a main ventilation path connecting a suction port communicating with a bathroom and an outlet, and is provided in the main ventilation path. a circulation fan for blowing in, provided in a portion of the main air passage upstream of the circulation fan, a fin tube type heating heat exchanger for heating the air passing through the partial, Department of downstream minutes from inlet a portion of the main air passage upstream of the circulation fan and the binding department sub air passage is provided in the secondary air passage, a humidification heat exchanger of the finned tube for heating air passing through, the humidification heat exchanger A spray nozzle for spraying water, and the spray nozzle evaporates the water sprayed on the humidifying heat exchanger and mixes the water vapor generated in the air flowing into the main ventilation path, so that the bathroom becomes a hot and humid sauna state. Bathroom heater with sauna function Te, the outlet side peripheral portion of the outer surface of the humidification heat exchanger, the water spray nozzle is sprayed and providing a non water impermeable member transmission.

According to the present invention, since the water impervious member is provided at the outlet side peripheral portion of the outer surface of the humidifying heat exchanger, the humidifying heat exchanger of the outer peripheral portion provided with the water impermeable member Hot water sprayed from the spray nozzle does not go to the outlet. The fine hot water sprayed from the spray nozzle is likely to agglomerate at the periphery of the humidifying heat exchanger and form large water droplets, but even if it becomes large water droplets, it accumulates on the spot and is heated by the humidifying heat exchanger. It becomes water vapor. Therefore, the evaporation efficiency can be improved. As a result, the amount of water used can be reduced. Furthermore, it is possible to suppress the possibility that the water that has not evaporated drops as water droplets from the outlet through the main ventilation path into the bathroom, hits the bather's body, and causes discomfort to the bather. Furthermore, it is possible to effectively suppress precipitation of impurities such as calcium carbonate caused by water adhering to the circulation fan or the outlet without being evaporated.

  Moreover, if the water sprayed from the spray nozzle passes through the humidifying heat exchanger without coming into contact with the fins or the like in the humidifying heat exchanger, it tends to go directly to the outlet without being evaporated. Therefore, the humidifying heat exchanger in the direction from the suction port side to the outlet side so as to prevent water sprayed from the spray nozzle from penetrating the inside of the humidification heat exchanger and jumping out from the outer surface on the outlet side. Is preferably set. As a result, the sprayed water reliably comes into contact with the fins and the like, so that the water is easily heated to become water vapor by the humidifying heat exchanger, thereby further improving the evaporation efficiency.

  Moreover, the water sprayed from the spray nozzle may go to the blower outlet side without evaporating from the central portion of the outer surface on the blower outlet side of the humidifying heat exchanger. Therefore, it is preferable to provide a filter that is in close contact with the outer surface of the air outlet side of the humidifying heat exchanger. As a result, the hot water flowing out from the outer surface on the outlet side of the humidifying heat exchanger is captured and retained by the filter, where it is heated by the humidifying heat exchanger to become water vapor, thereby further improving the evaporation efficiency.

  Further, when the upper surface on the downstream side of the humidifying heat exchanger in the sub-air passage is inclined so as to be lowered horizontally or to the suction port side, the hot water sprayed from the spray nozzle and bounced off by the humidifying heat exchanger hits the upper surface. Then, it flows down to the lower spray nozzle side or suction port side and does not evaporate. In view of this, it is preferable that the upper surface of the auxiliary air passage on the downstream side of the humidifying heat exchanger is inclined so as to be lowered toward the humidifying heat exchanger. Accordingly, the hot water sprayed from the spray nozzle and bounced back by the humidifying heat exchanger hits the upper surface, travels along the upper surface toward the humidifying heat exchanger, and is heated by the humidifying heat exchanger. Evaporate. Therefore, evaporation efficiency can be further improved, and water droplets can be prevented from dripping into the bathroom.

  Moreover, when the hot water sprayed from the spray nozzle hits the humidifying heat exchanger and bounces off and falls down from the suction port into the bathroom through the auxiliary ventilation path, it may hit the body of the bather and cause discomfort. Therefore, it is preferable to provide a prevention plate in the auxiliary ventilation path to prevent water sprayed from the spray nozzle from bouncing from the humidifying heat exchanger and heading toward the suction port.

  A bathroom heater A with a sauna function according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the bathroom heater A with a sauna function includes a box-shaped heater main body 1 that is embedded in the back of the ceiling through an opening formed in the ceiling R of the bathroom. The heater body 1 includes an exterior housing 2 embedded in the back of the ceiling, and a lower cover 3 that covers the lower opening of the exterior housing 2 and is exposed on the inner surface of the ceiling R of the bathroom. The lower cover 3 has an inlet 3a and an outlet 3b that communicate with the bathroom.

  A main ventilation path 4 connecting the suction port 3a and the air outlet 3b is defined in the heater body 1. A circulation fan 5 is provided in the main ventilation path 4, and a heating heat exchanger 6 is provided in a portion of the main ventilation path 4 upstream of the circulation fan 5.

  The heating heat exchanger 6 is a fin-tube heat exchanger including a large number of fins 6a stacked in a direction perpendicular to the paper surface of FIG. 1 and a meandering tube 6b penetrating the fins 6a. And a heat medium (water, antifreeze liquid, etc.) heated by the heating part of the heat source machine having the heating part and the heating part flows into the tube 6b. In addition, the heat exchanger 6 for heating arrange | positions so that it may be extended from the 1st part 61 of the lower side arrange | positioned in a horizontal attitude | position, and the outer end part on the opposite side to the circulation fan 5 of the 1st part 61 to the upper back. 2 parts 62. When the heating medium is supplied to the heating heat exchanger 6 and the circulation fan 5 is operated, the air in the bathroom is sucked from the suction port 3a and heated by the heating heat exchanger 6, and the warm air is discharged from the outlet 3b. Become blown into the bathroom.

  Further, in the heater main body 1, a sub ventilation path 7 is defined that connects a portion of the main ventilation path 4 downstream of the suction port 3 a and a portion of the main ventilation path 4 upstream of the circulation fan 5. . The auxiliary ventilation path 7 is provided above the main ventilation path 4. A humidifying heat exchanger 8 is provided in the auxiliary ventilation path 7. As with the heating heat exchanger 6, the humidifying heat exchanger 8 includes a fin tube type heat provided with a large number of fins 8a stacked in a direction perpendicular to the paper surface of FIG. 1 and a meandering tube 8b penetrating the fins 8a. It is an exchanger, and the heat medium heated by the heating unit of the heat source machine flows into the tube 8b.

  Further, a spray nozzle 9 for spraying warm water on the humidifying heat exchanger 8 is provided in the heater body 1. The spray nozzle 9 sprays hot water supplied from a hot water supply passage (not shown) through a solenoid valve like a fan, that is, in a triangular shape (see FIG. 3) in a top view (see FIG. 3), and heat exchange for humidification Fine water droplets (mist-like hot water) are applied to the upper portion of the side surface (left side surface in FIG. 1) of the suction port 8 in the entire width direction (perpendicular to the paper surface in FIG. 1). The hot water supply path may be supplied with hot water from the hot water supply section of the heat source machine, or supplied with hot water heated by a liquid heat exchanger that supplies a heat medium from the heating section of the heat source machine. Also good.

  A drain pan 10 is disposed below the spray nozzle 9. The drain pan 10 receives the hot water sprayed from the spray nozzle 9 and flowing down by rebounding from the humidifying heat exchanger 8. And the warm water in the drain pan 10 is drained outdoors through a drain pipe (not shown) connected to the drain pan 10. The drain pan 10 is a resin molded product integrated with a member on which the spray nozzle 9 is disposed and a member on which the humidifying heat exchanger 8 is placed.

  Next, the operation of the bathroom heater A with a sauna function will be described. When the sauna switch provided in the remote controller (not shown) is turned on, the heat medium from the heating section of the heat source unit is supplied to the heating heat exchanger 6 and the circulation fan 5 is driven, and the electromagnetic valve is opened. Then, warm water is sprayed from the spray nozzle 9. The sprayed hot water is evaporated by the humidifying heat exchanger 8, and water vapor is mixed into the air flowing into the main ventilation path 4 via the sub ventilation path 7, so that the bathroom becomes a hot and humid sauna (steam sauna) state.

  Here, if the warm water sprayed from the spray nozzle 9 passes through the humidifying heat exchanger 8 and travels toward the outlet 3b, the ratio of the warm water that evaporates decreases, resulting in poor evaporation efficiency. Furthermore, when the hot water that has not evaporated drips as water droplets from the outlet 3b into the bathroom through the main ventilation path 4, the bather is uncomfortable.

  In particular, fine water droplets aggregate at the peripheral edge of the humidifying heat exchanger 8 to form large water droplets, which are easy to flow down to the outlet 3b without being evaporated. Therefore, as shown in FIG. 2, a water-impermeable portion through which the hot water sprayed by the spray nozzle 9 does not permeate the outer peripheral surface (right side surface in FIG. 1) of the humidifying heat exchanger 8 on the outlet 3 b side. It is provided in close contact. Specifically, the outside of the portion of the humidifying heat exchanger 8 where the fins 8a are arranged (the portion excluding the outer frame of the humidifying heat exchanger 8 and hereinafter referred to as the fin portion) on the air outlet 3b side. The upper end portion and the left and right end portions of the surface are in close contact with a protruding plate portion 2a that protrudes downward from the lower surface of the upper wall of the exterior housing 2 in a U-shape. And the lower end part of the outer surface by the side of the blower outlet 3b of a fin part is closely_contact | adhering to the protruding plate part 10a protruded upwards from the edge part of the drain pan 10. FIG. These projecting plate portions 2a and 10a are made of structural plastic or the like and cannot pass through fine water droplets. Thereby, even if a water droplet accumulates in the peripheral portion of the humidifying heat exchanger 8, it is heated on the spot to become water vapor without flowing out to the outlet 3b side, so that the evaporation efficiency is improved. In addition, when the projecting plate portions 2a and 10a are provided as in the embodiment, it is preferable because other constituent members need not be added. The form, configuration, material, and the like of the water-impermeable portion are not limited. For example, a plate-like member having an opening at the center is closely attached to the outer surface of the humidifying heat exchanger 8 on the outlet 3b side. You may attach as follows. Moreover, it is not necessary for the water-impermeable portion to cover the entire periphery of the outer surface of the humidifying heat exchanger 8 on the outlet 3b side. For example, you may cover only the lower part of the periphery where water droplets tend to accumulate.

  Furthermore, if the hot water sprayed by the spray nozzle 9 passes through the humidifying heat exchanger 8 without hitting the fins 8a or the tubes 8b in the humidifying heat exchanger 8, it is easy to go directly to the outlet 3b without being evaporated. Therefore, the thickness of the humidifying heat exchanger 8 is prevented so that the hot water sprayed by the spray nozzle 9 passes through the humidifying heat exchanger 8 and is prevented from jumping out from the outer surface on the outlet 3b side (see FIG. 1 in the left-right direction). Thereby, since the sprayed warm water reliably contacts the surfaces of the fins 8a and the like, it is easily heated to the steam by the humidifying heat exchanger 8 and the evaporation efficiency is improved.

  Although not shown, a filter may be disposed in close contact with the outer surface of the air outlet side 3b of the humidifying heat exchanger 8. This filter is a sponge or the like having a close eye, and does not pass warm water but allows water vapor to pass. As a result, the hot water flowing out from the outer surface of the outlet side 3b of the humidifying heat exchanger 8 is trapped and stays in the filter, where it is heated by the humidifying heat exchanger 8 to become water vapor, thereby improving the evaporation efficiency. To do.

  As explained above, since the evaporation efficiency is improved, the amount of hot water used can be reduced. Moreover, precipitation of impurities, such as a calcium carbonate produced by water adhering to the circulation fan 5 or the blower outlet 3b, without evaporating can be suppressed effectively. Furthermore, since warm water does not flow down to the first portion 61 and the second portion 62 of the heating heat exchanger 6, the gap between the fins 6a of these portions 61 and 62 is not narrowed by the flowing warm water. Accordingly, an increase in the ventilation resistance of the entire heating heat exchanger 6 is suppressed, and a required air volume can be obtained without increasing the rotational speed of the circulation fan 5, thereby reducing fan noise.

  By the way, when the hot water sprayed from the spray nozzle 9 hits the humidifying heat exchanger 8 and bounces off and falls down from the suction port 3a into the bathroom via the auxiliary ventilation path 7, it may hit the bather's body and give an uncomfortable feeling. Therefore, it is preferable to provide a prevention plate in the auxiliary ventilation path 7 so that the hot water bounced off by the humidifying heat exchanger 8 does not face the suction port 3a side. However, if the flow of the air in the auxiliary ventilation path 7 from the suction port 3a toward the humidification heat exchanger 8 is obstructed by the prevention plate, it becomes difficult for the air to flow into the humidification heat exchanger 8 and the evaporation efficiency is lowered. , Increase ventilation resistance. Therefore, the prevention plate should be provided so as not to disturb the air flow in the auxiliary ventilation path 7 so much. Therefore, in the embodiment, referring also to FIG. 3, a pair of left and right first prevention plates 10 b and 10 b protruding upward from the upper surface of the drain pan 10 are provided on the left and right sides of the spray nozzle 9, and the rear of the spray nozzle 9. A first prevention plate 10c having a portion that overlaps with the first prevention plates 10b, 10b in the left-right direction on the (suction port 3a side) and projecting upward from the upper surface of the drain pan 10 is provided. A pair of left and right third prevention plates 2b projecting downward from the lower surface of the upper wall of the exterior housing 2 are provided behind the plates 10b and 10b. In addition, the hole which connects the said drain pipe is formed in the edge part of the 2nd prevention board 10c.

  Furthermore, when the upper wall lower surface 2c of the exterior housing 2 on the downstream side of the humidifying heat exchanger 8, that is, the upper surface of the auxiliary ventilation path 7 is inclined horizontally or descends to the suction port 3a side, the upper wall lower surface 2c When a fine water droplet bounced off by the humidifying heat exchanger 8 hits, it flows down and is received by the drain pan 10 below the spray nozzle 9 and discharged without evaporating. Therefore, the evaporation efficiency is reduced. Therefore, the upper wall lower surface 2c of the exterior housing 2 of the portion is inclined so as to be lowered toward the humidifying heat exchanger 8 (so as to be lowered to the right in FIG. 1). Thereby, the fine water droplets hitting the upper wall lower surface 2c of the exterior housing 2 travel along the upper wall lower surface 2c toward the humidifying heat exchanger 8 and are heated by the humidifying heat exchanger 8 to evaporate. Therefore, the evaporation efficiency is improved.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this. For example, although the said embodiment demonstrated the case where the spray nozzle 9 sprayed warm water in fan shape, the spray nozzle 9 may spray water. However, spraying warm water is preferable because evaporation efficiency and heating efficiency are good.

  Moreover, although the case where the heater main body 1 was installed in the back of the ceiling of a bathroom was demonstrated, this invention can be applied also to the wall-mounted bathroom heater with a sauna function which installs a heater main body in the side wall of a bathroom.

The explanatory longitudinal section showing the bathroom heater with a sauna function concerning the embodiment of the present invention. Explanatory drawing of a water-impermeable part. An explanatory cross-sectional view showing a bathroom heater with a sauna function.

Explanation of symbols

A ... Bathroom heater with sauna function, R ... Bathroom ceiling, 1 ... Heater body, 2 ... Exterior housing, 2a ... Bump (water impervious part), 2b ... Prevention plate, 2c ... Bottom surface of upper wall, 3 ... Lower cover, 3a ... Suction port, 3b ... Air outlet, 4 ... Main ventilation path, 5 ... Circulating fan, 6 ... Heat exchanger for heating, 7 ... Sub ventilation path, 8 ... Heat exchanger for humidification, 9 ... Spray nozzle , 10 ... drain pan, 10a ... projecting plate part (water impervious part), 10b, 10c ... prevention plate.

Claims (5)

A main ventilation path connecting the inlet and the outlet communicating with the bathroom;
A circulation fan that is provided in the main ventilation path, sucks air in the bathroom from the suction port, and blows it out from the outlet to the bathroom;
A heat exchanger for heating of a fin tube type provided in a portion of the main ventilation path upstream of the circulation fan and heating air passing through the portion;
And forming department sub air passage and a portion of the main air passage upstream of the part content and circulation fan on the downstream side of the suction port,
A finned tube type heat exchanger for humidification that is provided in the sub-air passage and heats the air passing therethrough;
The humidifying heat exchanger is provided with a spray nozzle for spraying water, and the spray nozzle evaporates the water sprayed on the humidifying heat exchanger and mixes the water vapor generated in the air flowing into the main ventilation path with the bathroom. It is a bathroom heater with sauna function to make a hot and humid sauna state,
A bathroom heater with a sauna function, characterized in that a water impervious member through which water sprayed by a spray nozzle does not permeate is provided at a peripheral portion on the air outlet side of the outer surface of the humidifying heat exchanger.   The thickness of the humidifying heat exchanger in the direction from the inlet side to the outlet side so as to prevent water sprayed from the spray nozzle from penetrating the inside of the humidifying heat exchanger and jumping out from the outer surface on the outlet side. The bathroom heater with a sauna function according to claim 1, wherein   The bathroom heater with a sauna function according to claim 1 or 2, wherein a filter is provided in close contact with the outer surface of the air outlet side of the humidifying heat exchanger.   The upper surface on the downstream side of the heat exchanger for humidification of the sub-air passage is formed with an inclination so as to be lowered toward the heat exchanger for humidification. Bathroom heater with sauna function.   5. The prevention plate for preventing water sprayed from the spray nozzle from bouncing from the humidifying heat exchanger and heading toward the suction port side is provided in the sub-ventilation passage. Bathroom heater with sauna function.

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