JPH06347193A - Air conditioner - Google Patents

Abstract

PURPOSE:To obtain a small, lightweight and high-efficiency air conditioner by a method wherein heating media is led into an inlet of an impeller that rotates and a joint is provided to lead out the heating media from an outlet of the impeller. CONSTITUTION:Cooled or warmed heating medium sent from a cooling/heating source flows into an impeller 22 via a cooling/heating medium supply passage 8 and a joint 3, exchanges heat with air as it flows through the inside of the impeller 22, comes out of the impeller 22, and returns to the cooling/heating source via the joint 3 and a cooling/heating medium return passage 9. Air 12 to be conditioned enters a crossflow fan 2, comes in contact with the impeller 22 to exchange heat, turns into conditioned air 13 after passing through a mist separator 10 and is blown out. Thus, the heating medium is flowed through the inside of the impeller 22 of a fan so that the impeller 22 has a heat exchange function. Therefore, a large heat exchanger can be omitted, so an apparatus is made small in size and lightweight as a whole and its efficiency is promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner (hereinafter referred to as an air conditioner), and more particularly to an air conditioner having a fan blade having a heat exchange function. The air conditioner here does not necessarily have all the functions of cooling, heating, and air cleaning, but includes one having at least one function.

[0002]

2. Description of the Related Art In conventional air conditioners such as air conditioners, a heat exchanger for passing a heat medium and a fan for taking in air to be processed into the air conditioner and forming a flow of air to be discharged are generally provided separately. It was target. A side view of such a conventional air conditioner is shown in FIG. In the figure, the motor M
The air 102 before air conditioning is sucked by the fan 102 rotating at 104, and the inlet side air 112 passes through in contact with the heat exchanger 101 which receives the supply of the cooling / heating medium from a cooling / heating source (not shown). , At this time, receive and exchange heat. The air thus conditioned is the outlet air 11
3 is discharged from the fan 102 to the outside of the system.

[0003]

In the conventional air conditioner as described above, since the heat exchanger 101 is required to have a large heat transfer area, a large size and weight are used. As a result, the air conditioner is used. Small size and weight of equipment
There was a problem that it would not be lightweight. Furthermore, since the heat transfer area is designed to be large so that the gaps between the members are made small, the pressure loss becomes large, which causes adverse effects such as an increase in power capacity and an increase in power cost.

In addition, since the gap between the members is small, an unpleasant wind noise is generated when the air passes, which makes it difficult to run quietly.

In addition, as shown in the rear view of FIG. 7 (b), the heat exchanger 101 has a rectangular shape with respect to the circular shape of the fan 102, so that a dead space 101a is generated at a corner portion, which is the whole. Was causing a decrease in efficiency.

The present invention has been made to solve the above problems and problems, and its purpose is to be small and lightweight, have low pressure loss, high efficiency, low power cost, and quiet operation. It is to provide an air conditioner capable of

[0007]

[Means for Solving the Problems] In order to achieve the above object,
An air conditioner according to the present invention is provided with an inlet, a flow passage, and an outlet of a heat medium inside a blade of a fan, introduces the heat medium into the inlet of the rotating blade, and derives the heat medium from the outlet of the blade. It is characterized in that a joint portion is provided.

[0008]

When the fan rotates, the joint portion introduces the heat medium into the inlet of the rotating blade, and further guides the heat medium from the outlet of the blade. As a result, the heat medium flows inside the blades of the rotating fan, and these blades also perform the heat exchange function at the same time as the air blowing function.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner according to the present invention will be described below with reference to the drawings of the embodiments. FIG. 1 is a partially cutaway perspective view of an embodiment of an air conditioner according to the present invention. Air conditioner 1 with heat exchange fan
Is a cross-flow fan 2 provided with a plurality of blades 22 having a blade internal passage 22A, and a motor 1 for rotating the cross-flow fan 2.
1. The rotation of the motor 11 is transmitted to the cross-flow fan 2. Further, while the cross-flow fan 2 is rotating, the cooling / heating medium (heat medium) is sent to the blades 22 without any trouble, and the joint portion 3 for taking out the same is provided. A mist separator 10 for collecting mist containing air and droplets scattered from the rotating cross-flow fan 2 is provided.

The cross-flow fan 2 comprises a blade support disk 21A, blades 22, and an annular portion 23. In the blade support disk 21A,
The rotary joint member 21B is concentrically fixed. The joint portion 3 is shown as a partially cutaway cross section in FIG. 1 to show the inside thereof. The joint portion 3 includes a fixed joint member 3A, a rotary joint member 21B, and a mechanical seal 15, and further has an inlet ring groove conduit 6 communicating with the cold / heat medium outward path 8 and an outlet ring groove communicating with the cold / heat medium return path 9. It has a conduit 7, an inlet ring groove 4, and an outlet ring groove 5.

The cold / hot medium sent from a cold / hot heat source (for example, a heat pump type air conditioning main body) not shown enters the blades 22 via the cold / hot medium outward path 8 and the joint portion 3,
Propagating inside the blade and exchanging heat with the air, the blade 2
2, and returns to the cold / hot heat source via the joint portion 3 and the cold / hot medium return path 9 again.

The pre-air-conditioned air 12 enters the once-through fan 2 and comes into contact with the blades 22 to exchange heat with the mist separator 10.
After passing through, the air becomes air 13 and is sent out. Thus, the configuration of the present invention does not use a conventional heat exchanger,
By flowing a heat medium to the blades of the fan, the blades have a heat exchange function.

FIG. 2 is a detailed view of the blade supporting disk 21A and the rotary joint member 21B of FIG. 1, (a) being a front view,
(B) is a side view, (c) is a rear view, and (d) is an AA cross-sectional view.

The blade support disk 21A has therein a forward circulation path 21c and a return circulation path 21d for passing a heat medium therein, and also has a plurality of blades 22 supported substantially vertically on the surface thereof, and the blade 2
2, the inlet 22B of the heat medium inlet and the outward circulation path 21
c, the outlet 22C of the heat medium outlet and the return path 21d communicate with each other.

A cylindrical rotary joint member 21B is concentrically arranged on the back side of the blade supporting disk 21A. The cylindrical rotary joint member 21B is one of the members forming the joint portion 3, and has two annular recesses having a semicircular cross section on the wall surface thereof, the inlet ring groove wall 4a and the outlet, respectively. It has the wall of the annular groove wall 5a. Furthermore, a forward path 21e communicating with the inlet ring groove wall 4a and a return path 21f communicating with the outlet ring groove wall 5a are provided in the central portion. Further, the outward path 21e communicates with the outward circulation path 21c, and the return path 21f communicates with the return circulation path 21d.

3A and 3B are detailed views of the fixed joint member 3A, which is the other member forming the joint portion 3, in which FIG. 3A is a front view, FIG. 3B is a sectional view taken along line BB, and FIG. Is a rear view.

The fixed joint member 3A has a cylindrical cavity inside and has a shaft hole 14 at one end. The rotary joint member 21B is received and rotated in this cylindrical cavity. Two annular recesses having a semicircular cross section are provided on the wall surface of the cylindrical cavity, and each has an inlet ring groove wall 4b and an outlet ring groove wall 5b. Furthermore, in the lower part of the central part, the inlet ring groove guideway 6,
Each has an outlet ring groove channel 7.

With the above-described structure, when the rotary joint member 21B is fitted into the fixed joint member 3A, the rotary joint member 21B is rotatable, but its inlet ring groove wall 4a and the inlet ring groove of the fixed joint member 3A. Wall 4
b forms an annular cavity having a circular cross section, and the inlet ring groove wall 4a communicates with the outgoing ring passage 21c via the outward path 21e, while the inlet ring groove wall 4b passes through the inlet ring groove guide path 6 and cools. It communicates with the hot medium outward path 8. By this, even while rotating
The heat medium enters from the cold / hot medium outward route 8 and is always in the outward circulation route 21.
It is possible to reach c.

Similarly, the outlet ring groove wall 5a and the outlet ring groove wall 5b of the fixed joint member 3A form an annular cavity having a circular cross section, and the outlet ring groove wall 5a passes through the return path 21f and the return path 21d. On the other hand, the outlet annular groove wall 5b communicates with the cold / heat medium return passage 9 through the outlet annular groove guide passage 7. This makes it possible for the heat medium to come out of the return path 21d and always return to the cold / hot medium return path 9 even during rotation.

The mechanical seal 15, the labyrinth seal, the sealing with magnetic fluid, etc. may be appropriately adopted depending on the type of the heat medium to be used so that the heat medium does not leak in the above-mentioned fitting portion.

FIG. 4 shows the structure of the blade 22 of FIG.
(A) is a top view and (b) is an AA sectional view. Feather 2
The material of 2 is preferably formed of a material having a large heat transfer coefficient such as metal, especially copper. Heat medium is inlet 22B
To the blade 22 and flow through the blade internal passage 22A,
During this time, heat exchange is performed with the air contacting the surface via the member of the blade 22.

The heat medium gives cold heat to the air (ie, takes heat) during cooling, and gives warm heat to the air during heating. Eventually, the heat medium reaches the outlet 22C, and the blade 2
It flows out from 2.

FIG. 5 shows another embodiment of the blade 22, (a)
Is a top view, and (b) is a side view. A plurality of vertical fins 22D are provided in the vertical direction on the front and back of the blade 22 to increase the heat transfer area.

FIG. 6 shows another embodiment of the method for inflowing the heat medium into the blades 22. FIG. 6A is a perspective view showing the blade support disk 21A, the blades 22, and the annular portion 23. The pre-air-conditioning air 12 is drawn in by rotation, and the front view seen from that direction is shown in FIG. b). Reference numeral 60 is a cold / hot medium pipe, 60a is an inflow inlet, and 60b is an outflow outlet. In the case of the embodiment shown in FIG. 2, the method of inflowing the heat medium into the blades 22 has such a structure that it flows in and out in parallel with respect to each blade group 22. That is, it flows into the inside of each blade group 22 from the outward circulation path 21C and flows out from each of the blade groups 22 into the return circulation path 21d. On the other hand, the heat medium outflow method of FIG. 6 is a method of inflowing to each blade group 22 in series, not in parallel. That is, the cold
The heating medium tube 60 is composed of a single tube, and enters from the point A1 of the blade 22 to the inside through the inlet 60a of the heating medium, and makes a circuit inside the blade 22 and exits from the point B1. Next, the inside of the next blade 22 again enters from the point A2, makes a circuit through the inside of the blade 22, and exits from the point B2. In this way each blade 2
2 sequentially, and finally enters the inside from the An point of the n-th blade 22, makes one round, and then exits from the Bn point to the outlet 60b.

[0025]

As described above, the air conditioner equipped with the heat exchange fan of the present invention is provided with the inlet, flow passage, and outlet of the heat medium inside the blades of the fan, while the heat medium is provided at the inlet of the rotating blade. In addition, by providing a joint part for leading out the heat medium from the outlet of the blade, and flowing the heat medium through the joint part to the blade of the rotating fan, these blades have a heat exchange function at the same time as the air blowing function. Since it is also configured to fulfill the requirements, a huge heat exchanger can be omitted, the entire device is small and lightweight, and since the air blowing part and the heat exchanging part are the same, dead space does not occur, so thermal efficiency is high and pressure loss is high. Since it is as small as a conventional fan, the power cost is low, and quiet operation is possible, and its industrial effect is extremely large.

[Brief description of drawings]

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

2 is a detailed view of the blade supporting disk and the rotary joint member of FIG. 1, (a) is a front view, (b) is a side view, (c) is a rear view, and (d) is a sectional view taken along line AA. is there.

3 is a detailed view of the fixed joint member of FIG. 1, (a)
Is a front view, (b) is a sectional view taken along line BB, and (c) is a rear view.

FIG. 4 shows the structure of the blade of FIG. 1, (a) is a top view,
(B) is an AA sectional view.

FIG. 5 is another embodiment of the blade, (a) is a top view and (b) is a top view.
Is a side view.

FIG. 6 is a diagram showing another embodiment of a method for inflowing a heat medium into the inside of a blade.

FIG. 7 is an explanatory diagram of a conventional air conditioner.

[Explanation of symbols]

 1 Air Conditioner 2 Cross-flow Fan 3 Joint Part 3A Fixed Joint Member 4 Inlet Ring Groove 5 Outlet Ring Groove 6 Inlet Ring Groove Guide 7 Outlet Ring Groove Guide 8 Cold / Hot Medium Forward 9 Cold / Hot Medium Return 10 Mist Separator 11 Motor 12 Air Before Air Conditioning 13 Air After Air Conditioning 15 Mechanical Seal 21A Blade Support Disk 21B Rotating Joint Member 22 Blade 22A Blade Internal Flow Path 23 Annular Portion

Claims (1)

[Claims] 1. A joint part for providing a heat medium inlet, a flow passage, and an outlet inside a fan blade, introducing the heat medium into the inlet of the rotating blade, and leading the heat medium out of the outlet of the blade. An air conditioner characterized by being provided with.