JP2002286241A - Air-conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize radiation and uniform indoor temperature distribution by a fin tube heat exchanger the fins of which are bent, in an air-conditioning device to radiate the heat of a heating medium. SOLUTION: The air-conditioning device comprises a heating medium flow tube 11 through which the heating medium flows; a plurality of radiation fins 13 juxtaposed with a distance and through which the heating medium flow tube extends and provided with bent parts 15 where at least one end is folded to form a surface on the front side; an air supply means 22 situated at the lower part of the radiation fin; and casing 17 where the air supply means and heat radiation fin are intermediately packaged and a supply opening 18 through which air heat-exchanged at the radiation fin is supplied is formed in a lower part. The heat of the heating medium heats the heating medium flow tube and the radiation fins and heats indoor air fed to the radiation fins from the air supply means to generate hot air, which is supplied through the supply opening to prevent the occurrence of unevenness in an indoor temperature. Radiation energy is generated from a bent part and radiated into a room.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner that circulates a heat medium to condition indoor air.

[0002]

2. Description of the Related Art A conventional air conditioner of this type is generally the one described in Japanese Utility Model Registration No. 3008663. As shown in FIG. 7, the heating device includes a plurality of radiating fins 1 provided in parallel in the main body with an interval therebetween, and further provided with a radiating pipe 2 penetrating the plurality of radiating fins 1; A configuration in which a part of the radiation fins 1 is exposed to the front surface of the main body to provide a corrugated exposed portion 3 as a whole is provided.

[0003] The heat medium heated to a high temperature in a boiler or the like flows through the heat radiating pipe 2 to heat the heat radiating pipe 2 and is transmitted to the heat radiating fins 1 to heat the air between the heat radiating fins 1, so that the warm air is radiated. It rises between the fins 1. As a result, air is naturally sucked in from the air suction port 4 provided in the lower part of the main body, blows out into the room from the hot air outlet 5 provided in the upper part of the main body by natural convection, and radiant energy is also transmitted from the exposed part 3 of the radiation fin 1 to the front of the main body. It was configured to radiate to

[0004]

However, in the above-mentioned conventional air conditioner, the air flowing from the air suction port 4 at the lower part of the main body is transferred from the heat radiation fins 1 in the process of rising vertically between the heat radiation fins 1. In order to efficiently heat the air and increase the radiant energy, the vertical shape of the exposed portion 3 needs to be increased. Therefore, the length of the radiation fin 1 in the vertical direction must be increased. On the contrary, the boundary layer on the surface of the radiation fin develops, and the heat transfer coefficient of the radiation fin 1 decreases.

Therefore, in order to secure the heat transfer amount of the radiating fins 1, it is necessary to increase the width of the radiating fins 1 in the depth direction or increase the number of the radiating fins 1, resulting in an increase in size and weight of the device. There was a problem that.

Further, since the warm air blown out from the warm air outlet 5 rises right above the main body, it does not spread in the room, stays near the ceiling in the room above the apparatus, and has a problem that the temperature distribution in the room to be heated is poor. was there.

Further, the exposed portion 3 for radiating radiant energy from the front surface of the main body has a problem that the radiant energy is also radiated from the rear surface toward the rear surface side of the main body, and the rear surface of the main body is heated. Was.

Further, the lower portion of the radiation fin 1 is cooled by the relatively low-temperature air that has just flowed in from the air suction port 4, so that the temperature of the exposed portion 3 naturally drops.
There is also a problem that it is difficult to obtain a sufficient radiant feeling at the feet of a person who takes warmth because the amount of radiated energy generated at the lower part of the body is small.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an air conditioner which improves the heat transfer coefficient of a radiation fin, is small and lightweight, and generates radiant heat and convective heat.

[0010]

To solve the above-mentioned conventional problems, an air conditioner according to the present invention is provided with a heat medium flow pipe through which a heat medium flows, and is provided side by side with a space between the heat medium flow pipe and the heat medium flow pipe. A plurality of heat dissipating fins, through which a pipe penetrates and at least one end thereof is bent to form a surface on the front side, a blower provided below the heat dissipator, the blower, and a heat dissipator are provided. And a housing having, at the lower portion, an outlet for blowing air that has undergone heat exchange with the radiation fins.

[0011] According to the above means, the indoor air is exchanged heat while being forced to flow between the radiating fins by the blowing means, is discharged from the outlet at the lower part of the housing, and radiates from the radiation surface to the front side of the housing. The energy is radiated, and the room can be air-conditioned efficiently.

[0012]

An air conditioner according to a first aspect of the present invention is arranged in parallel with a heat medium flow pipe through which a heat medium flows, and the heat medium flow pipe penetrates the heat medium flow pipe. A plurality of heat dissipating fins having at least one end bent to provide a bent portion forming a surface on the front side; a blowing means provided below the heat dissipating fins; And a housing having an outlet at the bottom for blowing out the air heat exchanged in the above.

With the above structure, the heat of the heat medium heats the heat medium flow pipe and the radiating fins, and the room air sucked in by the blowing means is heated by the radiating fins to be heated or cooled to be blown out from the outlet, and to be radiated. Radiant energy is generated from the bent part surface of the fin and radiated indoors. Therefore, by increasing the number of radiating fins, it is possible to reduce the size and thickness of the device while securing a large capacity. In addition, since the forced circulating flow can be generated by the blowing means, the heating according to the indoor load can be performed by arbitrarily controlling the heat radiation ability. In addition, if the surface of the radiating bent part is made flat,
Large radiant energy from the front can also be generated.

In the air conditioner according to a second aspect of the present invention, the air conditioner is provided on the upper part of the housing in the structure of the first aspect, so that the air conditioner has the same operation as the structure of the first aspect, and Since the means is not located at the upper part of the housing and is not exposed to the flow of hot air or cold air immediately after being heated by the radiating fins, it is possible to design without considering thermal influence.

The air conditioner according to a third aspect of the present invention has the same function as that of the first aspect, since the air conditioner is provided at the center of the housing in the configuration of the first aspect. When the blowing means is located on the suction port side of the upper part of the housing or on the outlet side of the lower part of the housing, the leakage of the blowing sound to the outside of the housing is reduced, and when the blowing means is a fan,
In order to avoid danger to the rotating fan, it is not necessary to provide a special structure at the suction port or the outlet.

In the air conditioner according to a fourth aspect of the present invention, in addition to any one of the first to third aspects, a louver for changing a blowing direction of the conditioned air up and down is provided at the outlet. The conditioned air can be blown obliquely upward from the outlet at the bottom of the housing, preventing the conditioned air from being blown directly to the human body and preventing the conditioned air from staying near the ceiling in the event of warm air. In addition, it is possible to suppress unevenness in the temperature distribution in the room.

In the air conditioner according to a fifth aspect of the present invention, in addition to the configuration according to any one of the first to fourth aspects, a louver for changing the direction of conditioned air to the right or left is provided at the outlet. The conditioned air can be blown out to the left and right from the outlet at the lower part of the housing, so that the conditioned air can be prevented from being blown directly to the human body.

In the air conditioner according to a sixth aspect of the present invention, in addition to the constitution of the fourth or fifth aspect, a moving means such as a stepping motor for moving a louver is provided. If it is low, the louvers are leveled so that warm air is blown out to the center of the room, and the room is heated at a stretch.
In normal conditions, the louvers are directed upwards to blow out the circulating warm air flow diagonally upward, preventing the warm air from blowing directly on the human body, preventing the warm air from staying near the ceiling, and causing uneven temperature distribution in the room. Can be suppressed, and the blowing of warm air according to the heating scene can be realized.

An air conditioner according to a seventh aspect of the present invention is the air conditioner according to any one of the first to third aspects, wherein an acrylic resin or a silicone resin having a higher emissivity than the material of the radiating fin is provided on the surface of the radiating fin. Alternatively, since a material such as a metal oxide such as iron, manganese, or titanium is coated, the amount of radiation from the radiation fins can be increased.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a perspective view of an air conditioner according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view thereof.

In FIGS. 1 and 2, a high-temperature heat medium such as hot water sent from a boiler or the like is sent from an inflow port 10 to a heat medium flow pipe 11, and heat is exchanged while passing through the heat medium flow pipe 11. Worked and returned to the boiler from outlet 12
Then, it is heated again by the boiler and flows into the heat medium flow pipe 11.

The heat dissipating fins 13 are formed by arranging a plurality of thin rectangular fin materials in parallel at equal intervals, bending one end 14 of a long side thereof to the side to abut one end 14 of an adjacent rectangular fin material, A bent portion 15 forming a surface is formed.
The heat medium flow pipe 11 is attached by expanding the heat medium flow pipe 11 by performing burring on the through hole of the radiation fin 13 so as to have a heat transfer relationship with the heat medium flow pipe 11 penetrated in a meandering shape.

A material 16 having a higher emissivity than a fin material such as an acrylic resin, a silicone resin, or a metal oxide such as iron, manganese or titanium is provided on the surface of the radiation fin 13.
Is painted. In addition, the housing 17 has an elongated suction port 20 for sucking indoor air at an upper upper surface, and an elongated outlet 18 for blowing conditioned air at a lower front part, and the radiation fins 13 constitute a flat surface on the front side. The bent portion 15 is exposed to the front of the housing and installed inside, and a louver 19 that changes the blowing direction up and down is installed at the outlet 18.

The air passage 21 has a space formed between the rear surface of the radiation fin 13 and the rear surface of the housing by exposing the bent portion 15 to the front surface of the housing and a space between the fin materials arranged at equal intervals. And the outlet 18 and the inlet 2
It communicates between 0. A blower means 22 such as a cross flow fan is provided in a blower passage 21 below the heat dissipating fin 13 at a lower part of the housing facing the blowout port 18, and rotates the room air sucked from the suction port 20 by rotation between the heat dissipating fin 13. The air is blown from the outlet 18 through the air passage.

In the air conditioner constructed as described above, when the blowing means 22 is operated to circulate the heat medium heated to 75 ° C. through the heat medium flow pipe 11, the heat medium flows through the heat medium flow pipe 11. Heat medium flow pipe 11 and radiation fin 1 between
3 is heated to about 75 ° C.
The indoor air sucked from the space and sent between the radiating fins 13 is heated and becomes hot air, guided from the outlet 18 to the louver 19 and blown out along the indoor floor surface.
Is also heated, so that the surface of the radiating fin provided with the material 16 having a higher emissivity than the fin material becomes a radiating surface and positively generates radiant energy and radiates from the front of the housing 17 toward the front of the room. .

As described above, according to the present invention, the warm air guided to the louver 19 from the air outlet 18 at the lower portion of the front surface of the housing 17 is blown up and down along the indoor floor, while the front surface of the housing 17 is Radiant heat is radiated from the bent portion 15 of the radiating fin 13 to the front of the room, and the temperature distribution in the room can be made uniform.

Further, by increasing the number of the radiation fins 13, it is possible to reduce the size and thickness of the device while securing a large capacity. Further, since the forced circulating flow can be generated by the blowing means 22, the heating means can be controlled according to the indoor load by controlling the blowing means 22 and arbitrarily controlling the heat radiation capacity, and the warm air blown out from the outlet 18 can be heated. Is blown out from the lower part of the housing, so that heating start-up with less temperature unevenness can be realized.

Further, since the air indicated by the arrow flows in the air passage 21 behind the radiating fins 13, it is possible to suppress a rise in the temperature of the rear surface 23 of the housing and maintain the temperature at a low temperature.

FIG. 3 shows a configuration in which the blowing means 22 is provided on the upper part 24 of the housing 17 and the suction port 20 is provided on the upper front surface of the housing 17. Heat exchanges with the air conditioner 13 and blows out from the air outlet 18 at the lower part of the housing to heat the room, and can exert the same operational effects as the air conditioner shown in FIGS.
In particular, since the blowing means 22 is not located in the upper part 24 of the housing and is not exposed to the flow of hot or cold air immediately after being heated by the radiating fins 13, the design of the blowing means 22 can be made without considering the influence of heat. Easy.

Further, FIG. 4 shows a configuration in which the blowing means 22 is provided in the center part 25 of the housing and the radiation fins 13 are divided into upper and lower parts. The indoor air sucked from the suction port 20 exchanges heat with the radiation fins 13. The air is blown out from the air outlet 18 at the bottom of the housing to heat the room, and the same operation and effect as the air conditioner shown in FIGS. 1 and 2 can be exhibited. In particular, since the air blowing means 22 is located in the central portion 25 of the housing, the suction port or the housing at the upper part of the housing is smaller than the configuration in which the air blowing means 22 is located at the suction side at the upper part of the housing or at the outlet at the lower part of the housing. In the case where there is a distance to the outlet at the lower part of the body to reduce the leakage of the blowing sound to the outside of the housing 17 and when the blowing means 22 is a fan, to avoid danger to the rotating fan, the suction port 20 is used. Alternatively, there is no need to consider providing a special structure at the outlet port 18 and the noise can be reduced with a simple configuration.

(Embodiment 2) FIG. 5 is a sectional view showing an air conditioner according to Embodiment 2 of the present invention. The present invention is different from the air conditioner shown in FIG. 3 in the first embodiment in that a movable means for driving the louver 19 of the air outlet is provided, and other portions having the same configuration and the same operation and effect are denoted by the same reference numerals. The detailed description is omitted, and different points are mainly described.

Referring to FIG. 5, a moving means 2 such as a stepping motor for driving a louver 19 for changing the blowing direction of hot air, which has exchanged heat with the radiating fins 13, up and down is provided at the blowout port 18.
6 are installed.

In the above embodiment, the same operation and effect as those of the air conditioner in the first embodiment can be expected. When the room temperature is low, the louver 19 (solid line) is turned downward by the movable means 26, and the warm air is blown out to the center of the room from the air outlet 18 provided at the lower part of the housing. In a steady state where the room temperature has risen to some extent, the louver 19 (broken line) is directed upward by the movable means 26, and the circulating flow is blown obliquely upward, thereby preventing the warm air from blowing directly on the human body while the warm air flows near the ceiling. To prevent stagnation.

As described above, in the invention of this embodiment, at the time of heating rise when the room temperature does not rise, by controlling the warm air blown out from the outlet 18 downward, it is possible to realize the heating rise with less temperature unevenness. In a steady state in which the room temperature has risen to some extent, the warm air blown out from the outlet 18 is controlled so as to be blown obliquely upward, so that the warm air does not stay near the ceiling and generates a flow circulating in the room. Can be prevented.

Further, the air conditioner shown in FIG. 6 is provided with a louver 19a for changing the blowing direction of the hot air to the left and right at the outlet port 18, so that the hot air can be blown from the outlet port 18 to the left and right. It is possible to prevent the hot air from being blown directly to the human body, and it is possible to suppress the unevenness in the temperature in the room and to blow out the hot air according to the heating scene.

In each of the above embodiments, an air conditioner for heating with hot air has been described. However, it is also possible to circulate a heat medium for cooling through a heat medium flow pipe and use it for cooling.

[0038]

As is clear from the above description, the following effects can be obtained according to the air conditioner of the present invention.

According to the first to third aspects of the present invention, radiant energy can be generated by the radiation fins facing the indoor side, and the convective heat transfer coefficient can be improved by the blowing means. An air conditioner that generates convection and a small and lightweight air conditioner without temperature unevenness can be realized.

According to the present invention, warm air can be blown obliquely upward from the air outlet by the louver which can change the blow direction up and down, so that the warm air is blown directly to the human body. While preventing this, it is possible to prevent the warm air from staying near the ceiling, thereby suppressing the temperature unevenness in the room.

According to the fifth aspect of the present invention, the louver which can change the blowing direction to the left and right can blow hot air from the outlet to both sides of the room, so that the warm air is blown directly to the human body. Can be prevented and the temperature unevenness in the room can be suppressed.

Further, according to the invention described in claim 6,
By changing the louver angle, the blowing direction can be changed, so that the warm air is prevented from being blown directly to the human body, and by suppressing the temperature unevenness in the room, the blowing of the warm air according to the heating scene can be realized.

According to the seventh aspect of the present invention, the radiation rate of the radiation fin is increased, so that the radiation amount generated from the air conditioner can be increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of another air conditioner.

FIG. 3 is a sectional view of another air conditioner.

FIG. 4 is a sectional view of another air conditioner.

FIG. 5 is a sectional view of an air conditioner according to Embodiment 2 of the present invention.

FIG. 6 is a sectional view of the air conditioner.

FIG. 7 is a perspective view of a conventional heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Heat medium flow pipe 13 Radiation fin 14 One end 15 Bend part 16 Material with high emissivity 17 Housing 18 Air outlet 19, 19a Louver 22 Blowing means 24 Upper housing part 25 Housing central part 26 Moving means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) F28F 1/32 F24F 1/00 391B F-term (reference) 3L049 BA00 BB02 BC02 BD03 3L051 BE07 3L070 AA06 BB18 BD03 3L071 AA01 AC00 AD01 AD05 AE03 AG04

Claims (7)

[Claims] 1. A heat medium flow pipe through which a heat medium flows, and a bent portion which is juxtaposed with an interval, penetrates the heat medium flow pipe, and bends at least one end to form a surface on the front side. A plurality of provided radiating fins, a blowing means provided below the radiating fins, a housing having the blowing means, the radiating fins therein, and an outlet at the bottom for blowing out the air exchanged by the radiating fins. Air conditioner equipped with. 2. The air conditioner according to claim 1, wherein the blower is provided at an upper portion of the housing, and blows heat-exchanged air from an outlet at a lower portion of the housing. 3. The air conditioner according to claim 1, wherein the blower is provided at a central portion of the housing, and blows out the heat-exchanged air from an outlet at a lower portion of the housing. 4. The air conditioner according to claim 1, wherein a louver for changing an air blowing direction up and down is provided at the outlet. 5. The air conditioner according to claim 1, wherein a louver for changing a blowing direction of air to the right and left is provided at the outlet. 6. The air conditioner according to claim 4, further comprising a movable means for moving the louver. 7. The air according to claim 1, wherein the radiation fin has a surface coated with a material having a higher emissivity than a material of the radiation fin, such as a synthetic resin or a metal oxide. Harmony equipment.