JPH06221615A - Space heating method and space heating system - Google Patents

Abstract

PURPOSE:To enable the starting time of space heating in the vicinity of a floor surface to shorten and space heating to be carried out efficiently even in a space where a ceiling is high. CONSTITUTION:A heating means 22 and a blower 31 for blowing air heated by said heating means are provided in an air-conditioner 7, and hot air blown from the blower 31 is blown in the direction of a floor surface 3 in a target space 2 through directional nozzles 41 arranged in the vicinity of a ceiling in the target space 2 as high-speed air jet streams. Accordingly, persons, who are present in the vicinity of the floor surface under the nozzles, can directly enjoy space heating by hot air of the high-speed air jet streams. Further, warm air in the vicinity of the ceiling is also caused to flow down to the vicinity of the floor surface by the high-speed air jet streams, and, according to the agitation occurring at this time, a temperature in the target space is made uniform.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating method and a heating system suitable for carrying out the heating method, for heating a space with a high ceiling such as a factory, a hall, an exhibition hall, a gymnasium or a lobby. A method and system that can be efficiently implemented are provided.

[0002]

2. Description of the Related Art The following method has been conventionally adopted for heating the above-mentioned spaces having high ceilings. First, what is shown in FIG. 3 is a heating method which is often used in general office buildings and factories. An air supply duct is provided near the ceiling of the room 51 or in the space above the ceiling. The hot air supplied from the air duct is supplied to a large number of outlets 52, 52 provided on the ceiling.
Is blown out at a relatively low speed (3 to 6 m / s).

FIG. 4 shows an improved type of the type shown in FIG. 3 described above. The blower 62 sucks and ejects indoor air near the ceiling of the chamber 61, and the air blown from the blower 62. Each provided with a duct 63 for transferring
Furthermore, the outlets of a plurality of directional nozzles 64 connected to the duct 63 are directed horizontally and vertically downward, and the hot air blown out from the outlets 65 and rising is directed to the floor surface 66 by the nozzles 64. It was intended to stir and mix the room air while blowing down to the vicinity, to make the temperature of the room 61 uniform and to shorten the heating rising time.

[0004]

However, according to the one shown in FIG. 3, since the warm air is blown out at a low speed from a position near the ceiling, the blown out warm air warms from the ceiling part and reaches the floor surface in sequence. Therefore, it takes a considerable amount of time to reach a desired temperature near the floor surface, which is a living area or a working area, and it takes a long time to rise during heating. Furthermore, since the ceiling portion becomes hot, heat loss from the ceiling portion is large, which is not preferable from the viewpoint of energy saving.

In order to improve this, in some cases, the blowout direction of the blowout port 52 was changed between winter and summer, and during heating operation, it was blown out obliquely with respect to the floor surface. Since it was blown out at a low speed from the seed outlet, the warm air that was blown out immediately rose, and although there was some improvement, it was not a fundamental solution.

On the other hand, the one shown in FIG. 4 has been improved in terms of shortening the rising time during heating, uniforming the indoor temperature, saving energy, running costs, etc. It was necessary to construct equipment related to nozzles and nozzles separately, which was a problem in terms of initial cost. In addition, when implementing it in an existing building, it was necessary to construct an air conditioning duct in the space above the ceiling, etc., which was not easy to implement in an existing building.

[0007]

The present invention has been made in view of such a point, and a heating method capable of shortening the rising time during heating and uniforming the indoor temperature while suppressing the initial cost, and The present invention intends to solve the above-mentioned problems by providing a heating system which is suitable for carrying out the method and which can be easily constructed.

Therefore, first, in claim 1, there is provided a heating method characterized in that the hot air supplied from the air conditioner is blown out from the vicinity of the ceiling of the target space toward the floor surface as a high-speed air jet stream. .

In the above heating method, as described in claim 2, the wind speed of the high-speed air jet stream may be controlled based on the temperature in the target space. In this case, the temperature in the target space may be, for example, a room temperature where there is a person who is the main body who enjoys heating, for example, in a normal factory, the room temperature is about 1 m to 1.2 m from the floor.

Further, in a third aspect of the present invention, as a system for carrying out the above heating method, a heating device for heating the taken-in air and a blower for ejecting the air heated thereby are provided in the air conditioner. A duct connected to the blower side of this blower is arranged near the ceiling of the target space, and a plurality of directional nozzles are connected to the duct to direct the blower outlet toward the floor of the target space. To provide a heating system characterized by the above.

Also in such a heating system, as described in claim 4, the blower air volume of the blower may be controlled based on the temperature in the target space.

[0012]

According to the first aspect of the present invention, the warm air supplied from the air conditioner is blown out as a high-speed air jet stream directly from the vicinity of the ceiling of the target space toward the floor surface. Therefore, the heating by the hot air can be enjoyed. Moreover, since the high-speed air jet flow attracts the warmed and raised air near the ceiling and conveys it to the floor surface, the heating rise time is extremely short. Furthermore, since the room air is agitated by such a high-speed air jet flow, the room temperature in the target space is made uniform.

According to the second aspect of the present invention, in the above heating method, the wind speed of the high-speed air jet flow is controlled based on the temperature in the target space, so that the temperature change in the target space is immediately followed, and Can be heated effectively.

According to the third aspect, the air heated by the heating device is blown toward the floor surface as a high-speed air jet stream from the outlet of the nozzle through the blower and the duct. Therefore, the heating method of the above-mentioned claim 1 can be carried out as it is, and the operation effect can be obtained.

According to the fourth aspect, since the blower air volume of the blower is controlled based on the temperature of the target space, the wind speed of the high-speed air jet flow from the outlet of the nozzle can be controlled based on the temperature in the target space. Therefore, the heating method according to claim 2 can be carried out as it is, and the effect thereof can be obtained.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an essential part of this embodiment, and FIG. It is a building of an existing factory that forms the target space 2 inside,
The size of the target space 2 is such that the height from the floor surface 3 to the ceiling surface 4 is 7 m, the vertical length is 30 m, the horizontal length is 40 m, and the number of entrances and exits 5 is large, so that workers can enter and exit accordingly. ,
Frequent loading and unloading of products, etc., resulting in a large amount of drafts. And in the space 6 adjacent to this building 1,
An air conditioner 7 for supplying warm air required for heating the target space 2 is installed.

On the introduction side of the air conditioner 7, an outside air intake 8,
And the return air intake 9 are provided respectively, and the outside air intake 8
Is connected to a flow path 12 communicating from an intake 11 installed outdoors, while the return air intake 9 is connected to an exhaust gallery 13 provided near the ceiling surface 4 of the target space 2 to an exhaust port 1
A flow path 16 branched from the flow path 15 leading to 4 is connected.

The flow paths 12, 15 and 16 are composed of ducts and the like, and the respective flow paths 12, 15 and 16 are provided with corresponding dampers 17, 18 and 19, respectively. These flow paths 12, 15 and 16 can be opened / closed by opening / closing operations of 17, 18 and 19. Further, in consideration of the fact that the target space 2 is inside the factory, an exhaust fan 20 for forced exhaust is also provided in the flow path 15.

In the air conditioner 7, there is provided a heating device 22 which uses heat such as hot water or steam flowing in the heating medium flow pipe 21 as a heating source, and the air is supplied from the outside air intake port 8 or the return air intake port 9 to the air. The air taken in through the filter 26 is warmed to a required temperature by the heating device 22 and becomes warm air for heating. A temperature detector 23 is installed on the outlet side of the heating device 22 to detect the temperature of the warm air, and the detection signal is input to a temperature control device 24, and the temperature control device 24 operates based on the detection signal. The valve 25 provided in the heating medium flow pipe 21 is opened and closed to control the temperature of the warm air.

Further, a blower 31 is installed on the blowing side of the heating device 22, and a duct 32 having a small diameter is connected to the jet port of the blower 31.
2 is appropriately branched into three ducts 33, 34 and 35 in the target space 2 as shown in FIG.
34 and 35 are arranged near the ceiling surface 4 in the target space 2.

Then, the ducts 33, 3 which are branched from each other
Each of the nozzles 4 and 35 is provided with a plurality of directional nozzles 41 at appropriate intervals. Each of these nozzles 41 has the same structure, and the diameter of the air outlet is 30 mm. Further, each of these nozzles 41 is connected to each of the ducts 33, 34, 35 via a flexible support, but in the present embodiment, all of the nozzles 41 are directed vertically downward.
The wind speed of the high-speed air jet flow blown out from each of the nozzles 41 can be freely set to 10 to 40 m / s by the operation control of the blower 31.

The operation control of such a blower 31 is performed by a control device 43 provided in the target space 2.
The control device 43 performs appropriate control based on a detection signal from a temperature detector 44 installed at a predetermined height L (about 1 m in this embodiment) from the floor surface 3 in the target space 2. A signal is output to the blower 31 in the air conditioner, whereby the blown air volume of the blower 31 is controlled by, for example, vane control or rotation speed control, and the air volume control controls each nozzle 4
The wind speed of the high-speed air jet flow blown out from the No. 1 is controlled.

Further, the control device 43 also controls the opening / closing operation of the damper 17 provided in the flow path 12 of the outside air introduction system, the damper 18 provided in the flow path 15 of the exhaust system, and the damper 19 provided in the flow path 16. For example, when the heating is started up until the temperature reaches a predetermined temperature, the dampers 17, 1
8 is closed, the return air from the target space 2 is taken in through the return air inlet 9, and this is supplied as warm air of the conditioned air. After reaching a predetermined temperature, the damper 19 is provided.
Only the air-conditioning air is closed so that the total amount of air-conditioning air is taken in from the outside air intake port 8, while the room air is exhausted from the exhaust gallery 13 through the flow path 15 and the exhaust port 14.

The present embodiment has the above-described structure. When the heating device 22 of the air conditioner 7, the blower 31 and the like are operated to perform the heating operation, the air warmed by the heating device 22 is warm air. Is introduced into the blower 31, and the jet flow from the blower 31 passes through the duct 32 to the ducts 33, 3
4 and 35, and from each nozzle 41 connected to each of these ducts 33, 34 and 35, it becomes a high speed air jet flow and is blown out toward the floor surface 3 in the target space 2.
In the operation of the present embodiment, the standard blowing wind speed is 25 m / s,
The blowing temperature was set to 35 ° C.

Then, the point at which the central residual wind velocity in the high-speed air jet flow from each nozzle 41 becomes 0.4 m / s is approximately 1.2 m from the floor surface 3, which is sufficient for workers in the target space 2. I was able to confirm that it will reach. Therefore, even immediately after the heating operation, the worker near the floor surface 3 can immediately enjoy the heating, and the heating rising time is extremely short.

Moreover, since the high-speed air jet attracts ambient air, in this case, warm air near the ceiling surface 4 and conveys it toward the floor surface 3, the temperature of the room air in the target space 2 is increased. Are made uniform throughout. Therefore, the worker who is in the vicinity of the floor surface 3 can enjoy the comfortable heating, and on the other hand, the effective heating without waste is implemented. Moreover, as described above, the control device 43 has a circulation system in which the return air in the target space 2 is used as the conditioned air for heating at the start of the heating operation, which is also associated with the action of the high-speed air jet flow. As a result, the heating time is very short.

Then, once the temperature reaches the predetermined temperature, the total air volume of the air for air conditioning is taken in from the outside air inlet 8 under the control of the controller 43, while the room air is exhausted by the exhaust gallery 1.
3 is exhausted from the exhaust port 14 via the flow path 15,
Ventilation of the target space 2 will be performed simultaneously with the heating.

Further, according to the above embodiment, the temperature control in the target space 2 is performed by keeping the temperature of the blown air constant.
The blower air amount of the blower 31 is controlled via the
This is done by adjusting the blowing speed of the. In this respect, in the conventional general heating method, it was performed by controlling the temperature of the blown air supplied to the room.However, when the temperature of the blown air is raised by such a blown air temperature control method, the blown air The buoyancy becomes large, the reaching distance of the warm air to the floor surface is shortened, and not only the floor area does not become warm, but also the amount of draft air entering increases, and the temperature near the floor surface may rather decrease. Then, the temperature of the blown air must be raised more and more, which is a very vicious cycle.

However, when the room temperature control is performed by adjusting the blowing speed of the nozzle 41 as described above,
For example, when the temperature near the floor surface 3 decreases and the blowing air velocity is increased correspondingly, the reaching distance of the high-speed air jet stream of warm air becomes long, and the vicinity of the floor surface 3 is immediately warmed. In addition, the fact that the high-speed air jet flow reaches the vicinity of the floor surface 3 in this way means that the amount of draft air that enters the vicinity of the floor surface 3 is reduced accordingly, and the room temperature is controlled extremely efficiently and quickly. Become. By the way, in the above embodiment, when the blowing temperature is kept at 35 ° C. and the blowing velocity is changed, the central residual wind velocity in the high-speed air jet flow at a height of about 1.2 m from the floor 3 is as follows. Became.

That is, when the blowing wind speed is 25 m / s, it is 0.4 m / s as described above, but when the blowing wind speed is 35 m / s, it becomes 0.7 m / s, and the blowing wind speed is When it was set to 20 m / s, it was 0.2 m / s or less. At 0.2 m / s or less, it is almost unattained. On the other hand, if the blowing air velocity is 25 m / s and the blowing temperature is 50 ° C. as in the conventional case, the buoyancy of the blowing air becomes large, and at that time, it is about 2.2 m from the floor surface 3. At the point, the central residual wind velocity in the high-speed air jet flow has become less than 0.2 m / s, and it is about 1.
In the vicinity of 2 m to 1.5 m, the heating by the warm air could not be enjoyed at all. Therefore, it can be confirmed that the case where the room temperature control is performed by adjusting the blowing air velocity as described above is extremely effective.

Further, when the above heating is carried out, it is not necessary to use a duct installed in a space above the ceiling as in the conventional case, and it is only necessary to provide a duct having a small diameter in the target space 2. Of course, the air conditioner 7 may also be provided in the target space 2. Therefore, it is a heating system that can be easily constructed even in existing buildings.

When the inside of the target space 2 is humidified at the same time as heating, an appropriate humidifying device is provided in the air conditioner 7 so that the humidified hot air is blown out from the nozzle 41 as a high-speed air jet stream. Therefore, it is possible to immediately perform the humidity adjustment near the floor surface 3 where the worker is present.

Furthermore, since the number of nozzles to be installed and the installation interval can be determined according to the size of the target space, etc., it is possible to always construct an optimum heating system corresponding to the target space.

[0034]

According to the first aspect of the present invention, even in a space with a high ceiling, since warm air is blown as a high-speed air jet stream directly from the vicinity of the ceiling toward the floor surface, it is located near the floor surface. The personnel can immediately enjoy the heating by the hot air. Moreover, since the air that has warmed up and has risen near the ceiling is also conveyed toward the floor by the high-speed air jet flow, the rising time of heating is extremely short. Furthermore, since the indoor air is agitated by such a high-speed air jet flow, the temperature in the target space is made uniform, and comfortable and efficient heating is performed.

According to the second aspect of the invention, in the above heating method, the wind speed of the high-speed air jet flow is controlled based on the temperature in the target space, so that it is effective to immediately respond to the change in the temperature in the target space. Heating can be performed.

According to the third aspect, it is possible to implement the heating method according to the first aspect without requiring the conventional air conditioning duct provided on the ceiling or the air outlet provided on the indoor wall. Therefore, it is possible to perform efficient heating with a short rise time and with a simpler construction than before. Also, the duct to which the nozzle is connected may have a small diameter.

According to the fourth aspect, in addition to the effect of the third aspect, it is possible to implement the heating capable of speedily and effectively controlling the temperature in the target space.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment viewed from a side surface.

FIG. 2 is an explanatory diagram showing a disposition state of ducts and nozzles in the embodiment.

FIG. 3 is an explanatory diagram of a conventional technique.

FIG. 4 is an explanatory diagram of another conventional technique.

[Explanation of symbols]

 1 Building 2 Space 3 Floor 4 Ceiling 7 Air Conditioner 8 Outside Air Intake 9 Return Air Intake 22 Heating Device 31 Blower 32, 33, 34, 35 Duct 41 Nozzle 43 Control Device 44 Temperature Detector

Claims (4)

[Claims] 1. A heating method, characterized in that hot air supplied from an air conditioner is blown out as a high-speed air jet stream from the vicinity of the ceiling of the target space toward the floor surface. 2. The heating method according to claim 1, wherein the wind speed of the high-speed air jet flow is controlled based on the temperature in the target space. 3. A heating device for heating the taken-in air and a blower for ejecting the air heated by the heating device are respectively provided in the air conditioner, and a duct connected to the ejection side of the blower is provided near the ceiling of the target space. In addition, a plurality of directional nozzles are connected to the duct to direct the air outlet toward the floor surface of the target space.
Heating system. 4. The heating system according to claim 3, wherein the amount of air blown from the blower is controlled based on the temperature in the target space.