JPS6241531A - Ceiling air conditioning device - Google Patents

Abstract

PURPOSE:To uniformize a cooling effect and improve cooling efficiency and to prevent useless consumption of cooling energy, by a method wherein the one end of a heat pipe, with which a ceiling member is formed, is forced into contact with the pipe wall of a heat exchanging medium passage, and a phase change is produced in the vicinity of the contact part. CONSTITUTION:A number of heat pipes 1 are placed on a ceiling part in parallel to each other with an uniform gap 2 therebetween to form a louver on the whole. With this constitution, part of heat radiated from a man or an object in a room is absorbed by working fluid in a heat pipe body 5 through fins 6, and is gasified in a lower space 17 and an intermediate space. The gasified working fluid flows to an upper space 18, and the heat of the working fluid is released to a coolant in a coolant passage pipe 15 through the heat pipe body 5 and the pipe wall of the pipe 15. The working fluid is condensed and flows through the upper space 18 in the lower space 17, and absorbs a heat in a room through the fins 6 again. This cools the interior of the room, but the air, making contact with the fins 6 and the heat pipe body 5, is cooled for convection, and this also cools the interior of the room.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ceiling air conditioner α that performs air conditioning (cooling, etc.) using a skylight, particularly in public facilities (underground malls, stations, airports). This relates to an air conditioner suitable for use as a louver on the ceiling of open spaces such as

(Prior Art) Generally, the above-mentioned facilities are heated and cooled by blowing out cold or warm air from the ducts of the dolls. Regarding heating, it has already been implemented or proposed to install a heater in the ceiling to provide radiant heating, or to install a heater in the floor.

(Problems to be Solved by the Invention) However, according to the above methods, a dedicated duct and heater are used in any case, so there is a problem that the space occupied by the air conditioner is large. Furthermore, it is difficult to install the air conditioner in the optimal location because it is constrained by various conditions such as equipment cost, appearance, and installation space, resulting in lower cooling efficiency and increased energy consumption. Furthermore, it is unavoidable that the heating and cooling effect becomes uneven. Furthermore, when the heater is assembled on the floor, it is necessary to provide sufficient strength to the entire floor including the heater, which increases the cost and increases the size of the device.

(Means for Solving the Problems) In order to solve the above problems, the present invention makes it possible to adjust the temperature by the ceiling member itself, which can be used as a louver, etc. The ceiling member is controlled by a heat pipe having fins. forming a heat pipe, sealing a working fluid inside the heat pipe, bringing one end of the heat pipe into contact with the pipe wall of the heat exchange medium passage, and creating a phase in which the phase of the working fluid changes inside the heat pipe in the vicinity of the contact portion. It is characterized by forming a changing part.

In addition, when configuring the air conditioner [i], a fluid that vaporizes at room temperature is used as the working fluid, the heat exchange medium passage is constituted by a refrigerant passage, and the phase change part is a condensing part that is a ring line for the working fluid. Tozuru.

(Function) According to the above configuration, when performing air conditioning, for example, a part of the heat radiated from a person or object in the room is absorbed by the working fluid through the fins, thereby vaporizing the liquid working fluid. The vaporized working fluid reaches the vicinity of the refrigerant passage, and the heat of the working fluid is transmitted through the pipe walls of the refrigerant passage and escapes to the refrigerant inside. Thereby, the working fluid liquefies and flows away from the tube wall, again absorbing the heat in the room via the cooling fins.

As mentioned above, heat pipes absorb radiant heat from indoors,
This cools the interior of the room, but the interior is also cooled not only by the cooling of the air that comes into contact with the fins, but also by convection.

(Embodiment) Fig. 1 is a schematic front view of an embodiment of the present invention, and Fig. 2 is an I of Fig. 1.
3 is a schematic enlarged cross-sectional view of -n, and FIG. 3 is a schematic view of FIG. In FIG. 3, a large number of heat pipes 1 are arranged parallel to each other with uniform gaps 2 in the horizontal direction on the ceiling of the room, forming a louver as a whole. As shown in FIG. 1, this louver is placed below the ceiling 3 of the building structure and the lighting fixtures 4 near it.
The structure ceiling 3 and lighting fixtures 4 are not hidden from the normal line of sight (obliquely upward view) of people in the room.

As shown in FIGS. 1 and 2, the heat pipe 1 is made of extruded aluminum, for example, and integrally includes a heat pipe body 5 and fins 6. As shown in FIG. 1, the heat pipe main body 5 is arranged in an attitude slightly inclined with respect to the horizontal direction. The fins 6 are provided in a generally vertical posture over almost the entire length of the heat pipe main body 5 except for both ends 7.8, and extend in a long band shape along the heat pipe main body 5. Note that the heat pipe body 5 and fins 6 are separate parts! It is also possible to form the heat pipe 1 by assembling the two in close contact with each other.

In the illustrated embodiment, the upper edge 10 and the lower edge 1 of the fin 6
1 extends diagonally along the heat pipe main body 5, and the heat pipe main body 5 extends along the entire length of the fin 6 at the middle part in the vertical direction, but instead of this structure, the fin 6
It is also possible to arrange the heat pipe body 5 so that the upper edge 1o and the lower edge 11 extend horizontally, and the heat pipe main body 5 extends from the upper left edge of the fin 6 toward the lower right edge in FIG.

Note that if a wick is provided inside the heat pipe body 5 and the working fluid is configured to move inside the heat pipe body 5 by capillary action during the operation described later, it is not necessary to tilt the heat pipe body 5.

As shown in FIGS. 1 and 3, a refrigerant passage pipe 15 and a heat medium passage pipe 16 are arranged below both ends 7.8 of the heat pipe body 5, respectively.

The pipes 15, 16 are attached to the ceiling 3 of the building structure by means of members not shown. The upper ends 7 of the plurality of heat pipe bodies 5 are in contact with a common refrigerant passage vibrator 15, and the lower ends 8 are in contact with a common heat medium passage vibrator 16.
is in contact with. Heat pipe 1 vibrator 15.16
It can also be supported in place by a separate support member (not shown).

A working fluid such as Freon gas, which is vaporized at room temperature, is sealed inside the heat vibe body 5. When performing air conditioning, cold water or other refrigerant is supplied to the upper refrigerant passage vibrator 15 from a refrigerant supply device (not shown). Note that during cooling, no heat medium is supplied to the heat medium passageway 116.

In this way, a part of the heat radiated from the person or object in the room is absorbed by the working fluid inside the heat pipe main body 5 through the fins 6, so that the liquid working fluid is absorbed into the heat pipe main body 5. It vaporizes in the lower space 17 or in the lower space 17 and the intermediate space. The vaporized working fluid reaches the upper space 18Na of the heat vibe body 5, and the heat of the working fluid escapes to the refrigerant inside the vibe 15 through the heat vibe body 5'' and the pipe wall of the refrigerant passage vibe 15. Thereby, the working fluid condenses and flows from the upper space 18 to the lower space 17, and absorbs the heat in the room via the fins 6 again.

As mentioned above, the heat vibrator 1 absorbs radiated heat from the room, thereby cooling the room; The room is also cooled.

When cooling is performed as described above, droplets of condensed water adhere to the surfaces of the fins 6. The water droplets are as shown by arrow R in Figure 1.
It flows downward along the lower edge 11 of the fin 6, and the lower edge 1
1, but in order to collect the water droplets,
A gutter 20 is installed below the lower end of the lower edge 11.

The tiIi 20 extends along the heat medium passageway 116, and its end (not shown) is connected to the drainage passageway. Further, 120 covers the end of the heat vibrator 1 and the heat medium passage pipe 16 from below, and serves to improve the appearance. A similar gutter 21 is disposed at the upper end of the heat vibrator 1 and below the refrigerant passage vibrator 15 for the purpose of improving the appearance.

As shown in FIG. 2, the lower edge 11 of the fin 6 is integrally provided with a gutter-shaped overhang 25 that projects from the vertical fin 6 body to both sides in the horizontal direction. The projecting part 25 has a side edge part 26 projecting upward, and moves to collect water droplets flowing down the surface of the vertical fin 6 body and to flow them to the seagull 20.

Needless to say, the projecting portion 25 serves to counteract the ceiling portion 3, etc., and improves the appearance. A similar overhang 27 is also integrally provided on the upper edge 10 of the fin 6. This overhang 27 is provided only to improve the appearance.

The above device can also be used for heating.

That is, when performing heating, hot water or other heat medium is supplied to the heat medium passage pipe 16 from a heat medium supply device (not shown). Also, during heating, no refrigerant is supplied to the refrigerant passage vibrator 15.

In this way, heat is absorbed from the heating medium in the heating medium passage vibe 16 into the liquid working fluid in the lower space 17 of the heat vibe body 5, whereby the working fluid vaporizes and flows upward. It emits heat in the upper space 18 and the intermediate space, becomes liquefied, and flows down to the lower space 17 again. The emitted heat is transmitted to the fins 6, and the air heated by the fins 6 convects and the heat is radiated from the fins 6, thereby heating the room.

(Effects of the Invention) As explained above, according to the present invention, the heat vibrator 1 is mounted on the ceiling, and since the heat vibrator 1 constitutes a ceiling member (for example, a louver), its installation position and installation range are limited. It will not be done.

Therefore, by providing the heat vibrator 1 on the entire ceiling, for example, it is possible to equalize the cooling effect and improve the cooling efficiency, and it is possible to prevent the wasted consumption of cooling energy.

Of course, the installation space can be significantly reduced compared to the conventional case where a dedicated cooling device is provided.

Furthermore, since the heat vibrator 1 is placed on the ceiling, there is no need to provide greater strength to the heat pipe 1 itself or its support structure than when it is placed on the floor. Therefore, the entire @box can be made smaller and lighter.

Furthermore, the following advantages can be obtained compared to the case where cooling is performed only by a cold water passage without using a heat pipe. In other words, if cooling is performed using only cold water passages, it is necessary to provide a long, complex passageway that is continuous and has a meandering shape throughout the entire ceiling, and in that case, the pipe resistance of the cold water passage is large. This increases the power required for the cold water supply pump. Moreover, since a large number of joints are required, there is a risk that cold water may leak from the joints. There is a risk that the cold water pipe may be damaged and leakage may occur even in areas other than the heat and joints.

On the other hand, in the present invention, it is not necessary to connect the internal passage of the heat pipe 1 and the internal passage of the refrigerant passage pipe 15, and the shape of the refrigerant passage vibrator 15 can be simplified, so that the pipe resistance of the refrigerant passage vibrator 15 is reduced. is small, so the power consumption of the refrigerant supply pump can be reduced. Furthermore, since the number of joints is reduced, the possibility of water leaking from the joints is extremely small. Also, even if the heat pipe main body 5 is damaged, the operation
J-Fluid vaporizes at room temperature, so the liquid working fluid will not leak.

Furthermore, the present invention has the advantage that by providing a heat medium passage pipe 16 for heat medium, it can also be used as a heating device. When used as a heating device, the same effects as those described above can be obtained when used as a 61 cold M device.

(Another Embodiment) As shown in FIG.
or a meandering shape).

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of an embodiment of the present invention, and Fig. 2 is a schematic front view of an embodiment of the present invention.
-1 is a schematic enlarged cross-sectional view, FIG. 3 is a schematic view taken along arrows ---m in FIG. 1...Heat vibe, 6...Fin, 15...Refrigerant passage vibe

Claims (4)

[Claims] (1) A ceiling member is formed by a heat pipe having fins, a working fluid is sealed inside the heat pipe, one end of the heat pipe is brought into contact with the tube wall of the heat exchange medium passage, and the heat pipe is placed near the contact portion. A ceiling air conditioner characterized in that a phase change part is formed in the interior of the ceiling air conditioner to change the phase of the working fluid. (2) A large number of heat pipes are arranged parallel to each other at intervals with each fin extending generally vertically to form a louver, and one end of the large number of heat pipes contacts the pipe wall of a common heat exchange medium passage. A ceiling air conditioner according to claim 1, characterized in that: (3) The working fluid is a fluid that vaporizes at room temperature, the heat exchange medium passage is a refrigerant passage, and the phase change section is a condensation section where the working fluid is condensed. Ceiling air conditioner according to item 1 or 2. (4) Claims characterized in that the working fluid is a fluid that condenses at room temperature, the heat exchange medium passage is a heat medium passage, and the phase change part is an evaporation part in which the working fluid is vaporized. Ceiling air conditioner according to item 1 or 2.