JP2501324B2 - Floor heating system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a floor heating system for warming a floor surface by using hot water in a bathtub.

(Prior Art) It is particularly preferable to warm the floor surface of the floor such as a bathroom washing place in a cold place where winter is severe. In addition, it is convenient in terms of energy saving if the floor surface is warmed by using the heat of the bathtub.

Therefore, several floor heating systems have been proposed in the past that use the hot water in the bathtub to warm the floor surface. Since it is easy for the ducts to become clogged or stenosis due to the hair and oil of the product, and the maintenance work in such a case is extremely troublesome, various measures have been taken to obtain an efficient system without giving consideration to these points. Has been done.

For example, according to Japanese Utility Model Publication No. 57-53934, as shown in FIG. 13, it is buried in the heat receiving part (C ₁ ) closely attached to the inner wall (A ₁ ) of the bathtub (A) and the base of the washing room (B). Heat sink (C ₂ )
The heat medium (D) is placed in the heat conducting body (C) consisting of, and heat obtained by heat exchange between the hot water (E) and the heat medium (D) through the tank wall (A ₁ ) is heated. The heat transfer through the conductor (C) warms the floor of the washing area (B).

Further, according to Japanese Patent Laid-Open No. 56-108428, a heat storage material is embedded in the floor of the bathroom washroom, and the heat of the water in the bathtub is transferred to the heat storage material through a heat pipe whose one end is exposed from the tank wall into the bathroom. The floor surface is warmed by transferring heat.

Further, in Japanese Patent Laid-Open No. Sho 60-13131, a heat receiving plate is arranged in the drain of a bathroom washing room, a heat pipe is embedded in the floor of the washing room, and the heat receiving plate and the heat pipe are thermally coupled to the floor. The surface is warming up.

(Problems to be solved by the invention) However, in such a conventional floor heating system, for example, in the case of Japanese Utility Model Publication No. 57-53934, the inner wall (A ₁ ) of the bathtub (A) is
Since the heat receiving part (C ₁ ) of the heat conductor (C) must be closely attached to
It has no choice but to use a specially-structured bath wall, and therefore it has to be tied up with a specific bathtub, which lacks flexibility in system application, is extremely disadvantageous in terms of cost, and increases thermal efficiency. For this reason, if the inner wall (A ₁ ) of the bathtub (A) is made thin, problems with strength will appear, and the degree of freedom in terms of design will be poor.

Also, in the case of JP-A-56-108428, since the heat pipe is exposed from the tank wall into the bathtub, the flexibility for system application is lacking for the same reason, and water leakage prevention on the outer periphery of the heat pipe exposed portion is prevented. Therefore, it is necessary to spend a considerable amount of money on such things, which in turn imposes an unnecessary burden on the design side.

Furthermore, in the case of JP-A-60-13131, it is hard to say that the hot water from the bathtub is being used anymore because the heat receiving plate is provided in the drainage groove to collect the residual heat from the waste water. Although it has significance in heat recovery, it is not practical in terms of thermal efficiency as a system for floor heating.

Therefore, the present invention, in the floor heating system that uses the hot water of the bathtub to warm the floor surface, does not need to specify the bathtub, and therefore not only has great flexibility in system application, but also has a high degree of freedom in design. It is an object of the present invention to provide a floor heating system which is practical in terms of heat efficiency and which is sufficiently considered for hair clogging and the like.

(Means for Solving Problems) As a means for solving the problems in the conventional floor heating system, the present invention provides a hot water passage in which hot water of a bath circulates and a hot water passage provided in the hot water passage. In a floor heating system comprising a heat exchanger and a heat pipe connected to the heat exchanger to heat the floor surface of the washing floor, a groove defined in the washing floor as a space for piping the heat exchanger and the heat pipe. And the inlet-side joint pipe and outlet-side joint pipe to the piping space of the hot water passage are provided by penetrating the wall of the groove portion on the bathtub side, and the hot water passage is connected to a water heater and a bathtub outside the bathroom. It was connected in the bathroom to the additional heating pipe connected between the two.

(Operation) According to the above means, the heat exchanger and the heat pipe are housed in the groove defined on the floor of the washing space as a space for piping,
An additional joint pipe is provided through the wall on the bathtub side of the groove to provide an inlet side joint pipe and an outlet side joint pipe to the hot water pipe space, and the hot water pipe is provided between the water heater outside the bathroom and the bathtub. Since it is connected to the pipes inside the bathroom, it is only necessary to construct the inside of the bathroom without exposing the floor heating pipes outside the bathroom.

(Example) A detailed description will be given below of a case where the floor heating system according to an example of the present invention is applied to a bathroom unit washroom.

FIG. 1 is an overall schematic view of a floor heating system, and FIG. 2 is an internal view of a bathroom unit.

In the figure, (1) is a bathtub, a washing space (2) is provided adjacent to one side part (1a) of the vertically long bathtub (1), and a floor (3) of the washing space (2) and a wall around the bathroom. (4) ... is a time finish.

The bathtub (1) is filled with hot water through a sprue (5) facing the upper part of the bathtub (1), and hot water is supplied to the spout (5) from an outdoor hot water reheating unit (6).

In the hot water supply reheating unit (6), the water supply pipe (7) is drawn from the nearest water supply source, and the cold water in this pipe (7) is passed through the main burner (6a) for hot water supply to obtain hot water. Piping according to the operation of electronic thermo (M) to hot water (7)
The temperature of hot water supplied from the hot water supply pipe (8) to the hot water supply port (5) and the like is adjusted by adding cold water bypassed from the side. In the figure, (FS ₁ ) is a flow switch for limiting the amount of water, and (S ₁ ) is a thermistor for detecting the temperature of hot water.

In addition to the hot water supply main burner (6a), the hot water supply reheating unit (6) has a built-in reburning sub-burner (6b), and the water level sensor (PS) ensures that the amount of hot water in the bathtub (1) reaches a predetermined level. When it is detected, the hot water can be heated by the pump (P) through the heating pipe (9) for forcibly circulating it through the heating sub-burner (6b). .

The additional heating pipe (9) enters the unit (6) from the bathtub (1), passes through the hot water temperature sensor (S ₂ ), the pump (P) and the hot water flow rate switch (FS ₂ ) and reaches the subburner (6b). Tube (9
a) and a return hot water pipe (9b) coming out of the unit (6) and reaching the bathtub (1). The frying hot water pipe (9a) has a three-way solenoid valve (in the bathroom as shown in Fig. 2). By 9c), the hot-water passage (10) for floor heating that can be bypassed is connected in series. Therefore, by appropriately performing the on / off control of the reburning sub-burner (6b) and the switching control of the three-way solenoid valve (9c), the inside of the bathtub (1) can be passed through the hot water passage (10) at any time regardless of the presence or absence of reheating. The hot water can be circulated.

The above-mentioned various functions of the hot water supply / heating unit (6) are provided by the outdoor main controller (11) and the indoor auxiliary controller (1).
By sending a command signal from 2) to the control board (PC) in the unit (6) via the cables (11a) and (12a) respectively, it is possible to perform appropriate control.

A heat exchanger (20) is attached to the hot water passage (10) in the washing room (2), which effectively guides the heat of the hot water to the plurality of heat pipes (30) such as copper pipes. , Floor (3)
Is warming the floor.

Here, the structure of the floor (3) of the washing place (2) will be described below.

FIG. 3 is a sectional view of a main part of the washing floor, FIG. 4 is an enlarged view of an IV portion of FIG. 3, and FIG. 5 is another enlarged view of the same portion.

The floor (3) has a structure in which a base material (40) is covered with a finishing material (50) and a heat pipe (30) is passed between them.
A whole number of pillars (6
It is supported by 1) via a plurality of beams (62).

For the base (40), a base (41) made of plywood is laid horizontally on the beam (62), and a heat insulating material (42) such as plywood or resin concrete is further provided with a waterproof molding layer (43) such as FRP. Adiabatic and waterproof unit (44) that is covered with and raised the outer edge (43a).
The heat insulating material (63) such as urethane foam is packed in the surrounding area. The upper surface of the unit (44) is slightly slanted toward the bathtub (1) side, and a plurality of concave grooves (45) having a substantially rectangular cross section are formed substantially parallel to the side portion (1a) of the bathtub (1) on the upper surface. A heat pipe (30) having a circular cross section is inserted into each concave groove (45) through a recess (46a) having a substantially semicircular cross section of a heat transfer plate (46) for uniform heat distribution and heat radiation. Has been done.

The heat transfer plate (46) is manufactured by molding a material having good heat transfer, processing and corrosion resistance such as aluminum alloy, and as shown in FIG. 5, flat flanges are provided on both sides of the heat pipe fitting recess (46a). It is provided with side edges (46b) and (46b).

On the other hand, as for the finishing material (50), a large number of tiles (51) are attached to the heat transfer plates (46) using a water-resistant adhesive (52), and joints (53) are provided between these tiles (51). ) ... is being built. FIG. 5 shows a heat transfer effect by covering the heat transfer plate (46) with a single heat transfer plate (46c) covering the entire heat transfer section.

In addition, the entire shape of the heat insulating / waterproof unit (44) is substantially rectangular in a plan view in this embodiment, as shown in FIG. 7 showing a state where the floor finishing material is removed, and the heat transfer plate (46) ... Has a heating area (47) overlaid with water and a water-sealing area (48) formed by outwardly extending one end of the area (47). As shown in FIG. 7, the water storage area (48) has a space for piping (4) in which the heat exchanger (20) is housed.
9) defining the groove (48a) and the outer wing flat plate (48a)
b) consists of An inlet side joint pipe (10a) and an outlet side joint pipe (10b) to the piping space (49) of the hot water passage (10) are provided through a wall (48c) on one end side of the groove (48a). still,
In the figure, (48d) is a drainage pit, and (48e) is a recess into which a tool can be inserted to mount the joint pipe (9a). The pipe space (49) is filled with mortar (64) after the pipe construction, and the tile (51) is stuck on it. Next, the overall structure of the hot water passage (10), the heat exchanger (20) and the heat pipe (30) for guiding the hot water heat of the bathtub (1) to the floor surface of the floor (3) will be described.

9 to 12 are views for explaining a heat transfer system of hot water from a bathtub, FIG. 9 is a plan view, and FIG. 10 is IX- of FIG.
IX line cutting front view, FIG. 11 is FIG. 9 XX line sectional view, 12
The figure is an enlarged cross-sectional view taken along line XI of FIG.

The hot water passage (10) enters the piping space (49) through the inlet-side take-out pipe (10a), and the lower pipe (10c) passes through U.
It goes through the character pipe (10d) to the upper pipe (10e), and then through the outlet side joint pipe (10b), the piping space (4
Exit 9) and return to the heating pipe (9) side.

The heat exchanger (20) is an airtight double pipe in which a lower pipe (10c) with a plurality of low fins (21) ... It has a structure. In addition, a heat medium such as CFC is enclosed between the lower pipe (10c) and the outer cylinder (22) through the filling port (23), and between the heat pipe (30) having a slight gradient. It can be freely returned.

 The functional description will be given below for the configuration of the following embodiment.

The hot water discharged from the bathtub (1) into the additional heating pipe (9) is
By switching the three-way solenoid valve (9c)
0) sent to the inside, and the piping space (49) in the washroom (2)
It is returned to the additional heating pipe (9) through the inner pipe line. At that time, in the heat exchanger (20) in the space (49), heat is exchanged between the hot water passing inside the lower pipe (10c) of the hot water passage (10) and the heat medium outside thereof. The heat of the hot water is transferred into the heat pipe (30) through the heat medium, so that the tiles (51) are directly heated without passing through the base (40). The floor is effectively warmed.

In this respect, since the heat transfer plate (46) is spread over substantially the entire floor (3), a larger heat transfer effect can be obtained.

From the above, it is apparent that the floor finishing material can be made of a material other than tiles, or the present invention can be applied to a bathroom for washing a house and the like or an ordinary floor.

(Effects of the Invention) As is apparent from the above, according to the present invention, the heat exchanger and the heat pipe are housed in the groove defined in the wash floor as the space for piping, and the wall on the bathtub side of the groove is provided through. Since the inlet side joint pipe and the outlet side joint pipe to the piping space of the hot water passage were provided, the hot water passage was connected in the bathroom to the additional heating pipe that was piped between the water heater and the bathtub outside the bathroom. It is only necessary to connect the additional heating pipe to the water heater installed outside the bathroom, and the piping for the floor heating only needs to be installed inside the bathroom, and no external piping is required. Therefore, the piping outside the bathroom can be minimized, and watertight treatment on the wall surface can be done only with additional heating pipes, so the number of parts can be reduced, cost of members can be reduced, and workability is also improved. It can be greatly improved. Further, since the additional heating pipe leading to the outside of the bathroom is connected to the hot water passage for floor heating inside the bathroom, it is possible to easily confirm water leakage from the connecting portion.

[Brief description of drawings]

The drawings show a case where a floor heating system according to an embodiment of the present invention is applied to a bathroom unit washing room. FIG. 1 is an overall schematic view of the floor heating system, FIG. 2 is an inside view of the bathroom,
Fig. 3 is a cross-sectional view of the main part of the washing floor, and Fig. 4 is the arrow view of Fig. 3.
IV part enlarged view, FIG. 5 is another enlarged view of the same part, FIG. 6 is a perspective view of the heat transfer plate, FIG. 7 is a plan view showing a state in which the finishing material of the washing floor is removed, and FIG. FIG. 7 is an enlarged cross-sectional view taken along line VII-VII, FIG. 9 is a plan view of a heat transfer system for hot water from a bath, FIG.
Fig. 11 is a front view taken along the line IX-IX in Fig. 9, and Fig. 11 is Fig. 9 X-.
X-ray sectional view, FIG. 12 is an enlarged sectional view taken along arrow XI of FIG.
FIG. 13 is a diagram showing a conventional example of a floor heating system. In the figure, (1) is a bathtub, (3) is a washing floor, (9) is an additional heating pipe, (10) a hot water passage, (20) is a heat exchanger, (30) ... is a heat pipe.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yutaka Miyazawa 3550 Kidayomachi, Tsuchiura City, Tsuchiura Plant, Hitachi Cable Co., Ltd. (72) Kyosuke Nagata 3550, Kidayomachi, Tsuchiura City, Hitachi Cable Co., Ltd. 56) Bibliography Sho 63-22518 (JP, U)

Claims (1)

(57) [Claims] 1. A floor heating system comprising: a hot water passage in which hot water from a bath tub circulates; a heat exchanger attached to the hot water passage; and a heat pipe connected to the heat exchanger to heat a washing floor. The heat exchanger and the heat pipe are housed in a groove defined on the floor of the washing place as a space for piping, the bathtub side wall of the groove is penetrated, and an inlet side joint pipe to the piping space of the hot water passage is provided. A floor heating system characterized in that an outlet side joint pipe is provided and the hot water passage is connected to an additional heating pipe provided between a water heater outside the bathroom and a bathtub in the bathroom.