JPH07133939A - Fan coil unit with radiation heating - Google Patents

Abstract

PURPOSE:To suppress unnecessary heating at the time of sleeping, etc., and to reduce heat consumption quantity by making a normal ventilation heating switch able between a radiation heating operation in which the ventilation heating is stopped, and a simultaneous operation of the ventilation heating and the radiation heating by an operation of a button switch. CONSTITUTION:A heat dissipating pipe 7 is disposed inside a front side decoration panel of a cooler/heater which has a suction port at a lower part of a body, a diffuser at an upper part, a blower and cooling/heating coil 4 disposed in the body. An inlet side end of the pipe 7 is connected to a water feed pipe 8 of a water inlet side of the coil 4 and an outlet side of the other end is connected to a three-way switching valve 11 mounted at a drain pipe 9 of a water outlet of the coil 4. A cooling/heating operation of only the coil 4 by a blower, heating by radiation heat obtained by stopping the blower and feeding heating medium to the pipe 7, and heating obtained by both the ventilation heating by the blower and heating by the radiation heat are selected in response to an indoor environment by switching the valve 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan coil unit with radiant heating in a room that naturally and forcibly seeks optimum heating development with a very small amount of heat in the room.

[0002]

2. Description of the Related Art In general, as a means for cooling and heating indoors, the heat and heat generated by the heat exchange coil is blown and heated by a blower, or the heat quantity of the heat exchange coil is passed through the machine. Most of the convection type that naturally blows with flowing air is used. However, the above-mentioned blast heating is suitable when heating the entire room at once,
Depending on the arrangement of furniture in the room, shadows, windows, sunshine, etc., the warm air is delivered to places that are completely unnecessary, and a large area requires a considerable amount of heat to be used. It is uneconomical and there is a concern that noise may be generated by operating the blower, so it is not suitable as a heater for hospitals, laboratories,
In particular, it has a drawback that it is difficult to quickly obtain warm air at a required location. In view of such uneconomicalness, a heating medium such as an electric heater is arranged in the front panel as the simplest heating device, and it is intended to immediately heat only a necessary portion by utilizing the action of radiant heat by the panel surface. A so-called radiant heating method has been developed. Furthermore, in some parts, the convection that combines both of the above means,
It is well known that a radiation and radiation type cooling and heating system has been developed and is being used conveniently.

[0003]

However, in the case of the convection and radiative dual type cooling and the heater which are conveniently used, the cooling is stopped in the case of the heater, and the stoppage of the warm water is cold, and the inlet side and the outlet side of the heat medium in the hot water coil. Since opening and closing operations of cocks, valves, etc., which are respectively mounted on the sides, are extremely difficult to open and close, and the structure is complicated, a large number of members are required, resulting in a small space. It has various drawbacks such as the need for installation space and the like in the fuselage. The present invention is intended to fundamentally solve the above drawbacks, and the switching between cooling and heating, which has been complicated by the fact that a three-way switching valve is attached to the convection / radiation dual-purpose cooling / heating machine described above. Its main purpose is to make the operation extremely easy and easy, and to surely obtain the optimum cooling and heating distribution according to the indoor environment.

[0004]

SUMMARY OF THE INVENTION In view of the above object, the present invention has a suction port 2 below the airframe 1 and a blowout port 5 above the airframe 1, and a blower 3 and a cooler inside the airframe. In a cooling / heating machine in which each hot water coil 4 is arranged, a heat radiating pipe 7 is installed inside the front side decorative panel 6 and the water supply pipe 8 on the water inlet side of the cold / hot water coil 4 is installed.
And, the inlet end of the heat radiating pipe 7 is connected and an opening / closing valve 10 is attached near the connecting portion, and the outlet of the heat radiating pipe 7 is connected to the drain pipe 8 of the other side water outlet of the cold / hot water coil 4. By connecting the ends, a three-way switching valve 11 is further attached to the outlet side connection portion, and by operating the three-way switching valve 11, heating operation by a normal blower, natural heating by radiant heat of blast stop, both effects by blast and radiant heat are performed. It is characterized in that it is configured such that predetermined heating according to the indoor environment can be arbitrarily switched and changed each time such as heating.

Further, a water temperature sensor 12 is attached to the water supply pipe 8 on the side of the water inlet, and a room temperature sensor 13 which is preliminarily installed at an appropriate place in the room and the three-way switching valve 11 attached on the side of the water outlet are short-circuited and connected. A general purpose is to provide a fan coil unit with radiant heating, which is characterized in that the switching operation between cooling and heating in the room is automatically changed and adjusted according to the indoor environment.

[0006]

The operation will be described below. In the case of cooling, first, the cooling SW of the operation panel 13 is turned on to energize the blower 3 to operate the air volume SW to set the air volume O → H → M → L to cool the air. The cold air of the hot water coil 4 is sent to the room to supply an appropriate cooling. In the case of heating, turn on the heating SW.
When N is set and the air volume SW is set to the air volume O → H → M → L, it is possible to simultaneously obtain the air heating by the blower 3 and the heat medium flowing through the heat radiating pipe 7, and the radiation heating by the decorative panel 6. Furthermore, the radiation SW is turned on without operating the SW.
It is also possible to obtain a heating function only by radiant heating by setting N to stop the cooling and water flow to the hot water coil 4 at the same time when the radiating pipe 7 is opened.

[0007]

Embodiments of the present invention will now be described with reference to the drawings, in which 1 is a machine body having a suction port 2 at the bottom and a blow port 5 at the top to form the suction port 2 and the blow port 5 in the machine. The blower passages are vertically communicated with each other, and the blower 3, the cold and hot water coils 4 and other mechanical devices are arranged in the blower passages, and the heat radiating pipes 7 are arranged in parallel or meandering in the front portion of the machine body 1. The decorative panel 6 which is bent and arranged in a circular shape is detachably installed. Further, a water supply pipe 8 having an opening / closing valve 10 attached to the water inlet side of the cold / hot water coil 4 is continuously provided, and the water supply pipe 8 is provided with an inlet end portion of the heat dissipation pipe 7 and also of the heat dissipation pipe 7. Each of the outlet side end portions is connected to a three-way switching valve 11 which is installed in the drainage pipe 9 of the cold / hot water coil 4. The three-way switching valve 11 is a spherical valve c formed by forming a T-shaped water passage b communicating in three directions inside a valve casing a as shown in FIG. 3, the radiant heating and the blast heating are simultaneously obtained by passing all the water from the side of the heat radiating pipe 7 and the coil 4 by the rotating action of the spherical valve c. Can be done. B = Water is passed through the heat radiating pipe 7 and the flow of water on the coil 4 side is stopped, so that blast heating cannot be obtained and only radiant heating is performed. C = The flow of water from the heat radiating pipe 7 is stopped and the water on the coil 4 side is flowing, so that only blast heating by the blower 3 is obtained without performing radiant heating. D = All the flow of water from the radiating pipe 7 and the cold / hot water coil 4 side is stopped, and the cold / heating is not performed. Various heating functions can be easily and surely obtained by rotating the spherical valve c of the three-way switching valve 11, etc.

Further, in the present invention, a water temperature sensor 12 is provided in the water supply pipe 8 on the water inlet side, and a three-way switching valve 11 is provided so that radiant heating is performed only when hot water is passed at a constant temperature such as high or low. A room temperature sensor 13 may be installed at an appropriate place in the room so as to be automatically switched, and the sensor 13 may be short-circuited with the three-way switching valve 11 to switch to radiant heating when ventilation air heating is insufficient. obtain.

[0009]

As described above, according to the present invention, when the button switch is operated, the normal blast heating is performed, the blast operation is stopped to heat the radiant air, and the blast operation and the radiant heating are simultaneously performed. It is possible to change the switching operation instantly according to the indoor environment each time, and to immediately switch from blast heating to radiant heating for indoor heating when the load is low and unnecessary heating when sleeping. Therefore, it has remarkable effects such as low heat consumption, economical, and energy saving. Moreover, unlike the conventional one in which the open / close switching valve is installed at each water supply point of the cold / hot water coil and the radiation panel, a single three-way switching valve 11 is installed at the outlet side portion of the cold / hot water coil 4 and the radiation pipe 7. Therefore, the operation is easily performed without operating many valves, the structure is simple, the number of members used is small, the installation space is small, and the overall shape can be made compact. is there.

Further, as described in claim 2, the water supply pipe 8
By connecting the water temperature sensor 12 and the room temperature sensor 13 for detecting the room temperature to the three-way switching valve 11, the cooling / heating switching operation in the room is automatically adjusted and changed according to the indoor environment. Needless to say, the indoor environment can be maintained in a comfortable environment.

[Brief description of drawings]

FIG. 1 is a schematic view of a fan coil unit with radiant heating according to the present invention,

FIG. 2 is a side view of the main part of the fan coil unit,

FIG. 3 is an operation explanatory view of a three-way switching valve internal valve mechanism,

FIG. 4 is a front view of a switch operation panel.

[Explanation of symbols]

 4 Cold / hot water coil 6 Decorative panel 7 Heat dissipation pipe 9 Drain pipe 11 Three-way switching valve

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[Procedure amendment]

[Submission date] March 14, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a machine body having a suction port 2 at the bottom and a blow-out port 5 at the top, and the suction port 2 and the blow-out port 5 are formed in the machine. The blower passages are vertically communicated with each other, and the blower 3, the cold and hot water coils 4 and other mechanical devices are arranged in the blower passages, and the heat radiation pipes 7 are arranged in parallel or meandering on the inner surface at the front of the machine body 1. The decorative panel 6 which is bent and arranged in a circular shape is detachably installed. In addition to the heat dissipating pipe 7 being integrally disposed on the inner surface side of the decorative panel 6, the heat dissipating pipe 7 is attached to the front portion of the machine body 1 to form a heater, and the heat heater is provided at the front portion of the heater. A decorative panel 6 whose entire circumference is surrounded by a heat shield so as to prevent the heat radiation of the heater from leaking is openably and closably fitted, and an appropriate heat transfer material is inserted between the decorative panel 6 and the heater. Then, the heating heater can be heated. Further, a water supply pipe 8 having an opening / closing valve 10 attached to the water inlet side of the cold / hot water coil 4 is continuously provided, and the water supply pipe 8 is provided with an inlet end portion of the heat dissipation pipe 7 and also of the heat dissipation pipe 7. Each of the outlet side end portions is connected to a three-way switching valve 11 which is installed in the drainage pipe 9 of the cold / hot water coil 4. The three-way switching valve 11 is a spherical valve c formed by forming a T-shaped water passage b communicating in three directions inside a valve casing a as shown in FIG. 3, the radiant heating and the blast heating are simultaneously obtained by passing all the water from the side of the heat radiating pipe 7 and the coil 4 by the rotating action of the spherical valve c. Can be done. B = Water is passed through the heat radiating pipe 7 and the flow of water on the coil 4 side is stopped, so that blast heating cannot be obtained and only radiant heating is performed. C = The flow of water from the heat radiating pipe 7 is stopped and the water on the coil 4 side is flowing, so that only blast heating by the blower 3 is obtained without performing radiant heating. D = All the flow of water from the radiating pipe 7 and the cold / hot water coil 4 side is stopped, and the cold / heating is not performed. Various heating functions can be easily and surely obtained by rotating the spherical valve c of the three-way switching valve 11, etc.

Claims (3)

[Claims] 1. A cooling / heating machine having a suction port 2 below the airframe 1 and an air outlet 5 at the top, and a blower 3 and a cold / hot water coil 4 arranged inside the airframe. A heat radiating pipe 7 is provided inside the decorative panel 6, the inlet side end of the heat radiating pipe 7 is the cooling pipe, the water inlet pipe water feed pipe 8 of the hot water coil 4 is the other end outlet port is the cold pipe. , A three-way switching valve 11 that can be attached to the drainage pipe 8 at the water outlet of the hot water coil 4,
The heat medium flow to the heat radiating pipe 7 is stopped by the operation by and the normal cooling by the blower 3, normal cooling and heating operation of only the hot water coil 4, and the operation of the blower 3 are stopped and the heat medium is passed to the heat radiating pipe 7. It is characterized in that the radiant heating by flowing the radiant heat is further switched to an arbitrary heating function each time depending on the indoor environment, such as heating by blast heating by the blower 3 and heating simultaneously with radiant heat. A fan coil unit with radiant heating. 2. The fan coil unit with radiant heating according to claim 1, wherein a water temperature sensor 12 is attached to the water supply pipe 8 on the side of the water inlet, and a room temperature sensor 13 which is preliminarily installed at an appropriate place in the room is provided. A radiant heating system characterized in that a three-way switching valve 11 mounted on the water outlet side is electrically connected, and the switching operation between cooling and heating in the room is automatically changed according to the indoor environment. Fan coil unit with. 3. The three-way switching valve 11 according to claim 1, wherein a T-shaped water passage b communicating in three directions inside the valve casing a.
A fan coil unit with radiant heating, characterized in that a spherical valve c or a cylindrical valve formed by the above is rotatably fitted by the action of an electric motor d.