JPH0367995A - Heat exchanger - Google Patents

Abstract

PURPOSE:To improve heat exchanging capability by constructing the device so that heat exchange is performed between a heat medium and fresh air whilst the heat medium passes through a forward tube, a turn room, and a backward tube. CONSTITUTION:As an electric motor 5 is actuated, a rotary shaft 3, a forward tube 11, a backward tube 12, an annular tank 2 are integrally rotated. Herein, refrigerant is supplied from a nozzle 41 to a heat exchanger H by a compressor 64. The refrigerant passes through the nozzle 41, a suction chamber 30, and forward tube 11, and enters a turn room 20 of the annular tank 2. The refrigerant further enters a discharge chamber 33 after passing through the backward 12 from the turn room 20, and thereafter enters a receiver 61 via a nozzle 42. The refrigerant heat-exchanges in the forward tube 11, the turn room 20, and the backward tube 12, and radiates heat to the outside. Since both tubes 11, 12 are rotated and twisted, fresh air around those tubes becomes turbulent. Thus, excellent heat exchanging capability is manifested.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is used for heating and cooling of vehicles, radiators, and the like. This invention relates to a Wl type rotary heat exchanger.

(Prior Art) Heat exchangers are used in a variety of applications, such as vehicle radiators, condenser evaporators, heater cores, and evaporator condensers in general household air conditioners.

Further, the heat exchanger body is fixed at a position where ventilation is best, and a blower is used to provide an air volume commensurate with the desired heat exchange capacity.

[Problem to be solved]

However, in recent years, as the entire system has become compact, heat exchangers have often been installed near other equipment (the ventilation path has become narrow and it has been difficult to locate the blower). This results in a situation where the total heat exchange area of the heat exchanger cannot be used effectively.This tendency is particularly noticeable in the heat exchangers installed in automobiles.

That is, if there is an obstacle on the front or rear surface of the heat exchanger, there will be large variations in the speed of the wind passing through the heat exchanger, resulting in a decrease in the amount of heat exchange.

Therefore, in order to deal with the upper part problem, cross flow fan and sirocco fan type rotary heat exchangers have been proposed (for example, Japanese Utility Model Publication No. 5325322).

However, since this heat exchanger is long in the direction of the rotation axis, there are some issues with its placement.

Requires a large amount of space in the axial direction. Therefore.

Such a conventional heat exchanger cannot be used when the heat exchanger is installed in a narrow space. especially.

It is difficult to apply this method to small-sized devices such as automobile condensers.

In view of these conventional problems, the present invention aims to provide a thin heat exchanger that has l'l-+1 heat exchange ability.

[Means for solving problems]

The present invention comprises a rotating shaft, a large number of tubes for heat exchange connected radially to the rotating shaft, and an annular tank communicating with the outer peripheral opening of the tubes.A fixed shaft supporting the rotating shaft. A heat exchanger comprising: the rotating shaft having a suction chamber for supplying the heat medium and a discharge chamber for discharging the heat medium;
1. The tube consists of an outgoing tube that communicates with the suction chamber and a return tube that communicates with the discharge chamber, and 2. The annular tank includes the outgoing tube and the return tube.
Divided into multiple turn rooms connected as K111.

The above heat medium flows from the suction chamber to the outgoing tube, turn room,
A path is formed to reach the discharge chamber via the return path 1-1-b L11.
The heat exchanger is characterized in that the fixed shaft is provided with an inlet nozzle and an outlet nozzle communicating with the suction chamber 11 of the rotating shaft.

The most noteworthy feature of the present invention is that a large number of outward tubes and return tubes are provided radially with respect to the rotation axis.
A turn room is provided around the outer periphery of both tubes, and the heat medium is the outward tube and turn room.

This is a 9-rotation impeller type heat exchanger configured to exchange heat by flowing in a U-shape through the return tube.

The rotating shaft has a suction chamber for supplying the heat medium to the outgoing tube, and a discharge chamber for sending the heat medium returned from the turn room to the outside.

An outgoing tube is communicated with the suction chamber, and an incoming tube is communicated with the discharge chamber. In addition, these outbound tubes,
The return tubes are connected radially to the nine rotating shafts, and the outer peripheries of the two tubes are opened into an annular tank. Further, the annular tank is divided into a turn room with a pair of outbound tubes and a return tube opened. As a result, as described above, a heat medium flow path is formed that flows in a U-shape through the outgoing tube, the turn room, and the return tube, and heat exchange is performed in the outgoing tube and the turn room.

In addition, the above-mentioned pair of outbound and inbound tubes may be configured with one tube each (Figure 1), or one outbound tube and two inbound tubes (Figure 10), or both may be configured with a plurality of tubes. Making it into a book is optional.

In addition, especially regarding the return tube, the return tube should be made of two pieces of wood to efficiently remove condensed liquid in the heat medium, or the return line should be made of two pieces of wood to remove mixed oil from the gaseous heat transfer medium. (Second Embodiment and Third Embodiment)

The rotating shaft is rotatably supported by a fixed shaft, and these have a suction chamber for sucking the heat medium into the outgoing tube, and an inlet nozzle for discharging the heat medium coming out from the return tube. A discharge chamber outlet nozzle is provided respectively. Further, the rotating shaft is driven by an electric motor or the like.

Furthermore, although a gaseous heat medium is generally used, a liquid may also be used.

Further, it is preferable that the tube is twisted between the rotation axis and the annular tank. This creates turbulence in the outside air around the tube, improving heat exchange performance.

[For production]

In the heat exchanger of the present invention, the tube consisting of the outgoing tube and the incoming tube and the annular tank surrounding the tube rotate integrally by the rotation of the two rotating shafts. The heat transfer medium entering from the fixed axis artificial nozzle goes into the suction chamber, outgoing tube, and turn room.

On the return trip, it is sent out from the exit nozzle after passing through the drawing chamber.

Then, while the heat medium C1 passes through the outbound tube 1, turn tube 5, and return tube 5, it exchanges heat between 1<zL. When the heat exchanger is a flat or delta device, heat is given to the outside air, and when the heat exchanger is a Si absorber, heat is taken away from the outside air.

9 For example, in the case of the former radiator, part of the gaseous heat medium becomes liquid in the middle of the outgoing tube, but the liquid actively moves toward the turn room due to the centrifugal force of rotation of the heat exchanger. carried to. The liquid is then efficiently discharged into the discharge chamber via the return tube.

In addition, in the heat exchanger of the present invention, the tubes for heat exchange extend radially from the rotation axis, so the contact area between the tubes and the outside air is large, and furthermore, since the tubes are rotating, The outside air around the tube becomes turbulent.

Also, even at low rotations such as 500 to 11,000 rpm.

The relative wind speed with the air can be easily kept high.

Therefore, it exhibits excellent heat exchange ability.

Furthermore, the tubes protrude in a radially spread manner from the rotation axis, and have a small thickness in the axial direction.

[Effects] Therefore, according to the present invention, it is possible to provide a thin heat exchanger that has excellent heat exchange ability.

Furthermore, the heat exchanger of the present invention exhibits its excellent features when placed in a narrow space such as a condenser for an automobile.

[Example] First Example A heat exchanger according to an example of the present invention is shown in FIGS. 1 to 9.
This will be explained using figures. In this example, the present invention is applied to a condenser in an automobile air conditioner.

First, as shown in FIG. 3, the condenser of this example includes a heat exchanger H, a compressor 64 for sending a gaseous refrigerant as a heat medium to the heat exchanger H, and a discharge gas from the heat exchanger H. A receiver 61 receives refrigerant, an expansion valve 62. It consists of an evaporator 63.

Then, as shown in FIG. 3, cooling is performed in the heat exchanger H by circulating a refrigerant between these devices.

As shown in FIGS. 1 to 5, the heat exchanger H includes a rotating shaft 3 connected to an electric motor 5, a large number of tubes 1 for heat exchange connected radially to the rotating shaft 3, It consists of an annular tank 2 communicating with the outer peripheral opening of the tube 1, and a fixed shaft 4 rotatably supporting the rotating shaft 3.

Further, the rotating shaft 3 includes a suction chamber 30 for supplying a heat medium,
It has a discharge chamber 33 for discharging the heat medium.

Further, the tube 1 has an opening 31 of the suction chamber 30.
It consists of an outgoing tube 11 that communicates with the discharge chamber 33, and a return tube 12 that communicates with the opening 32 of the discharge chamber 33.

Further, the annular tank 2 has a turn room 20 that allows each of the outgoing tube 11 and the incoming tube 12 to communicate with each other as a set. Each turn room 20 has a partition wall 2
It is divided by 1.

These outgoing tubes 11. Turn room 20. In Fig. 2, the distribution route in which the return tube I2 is 1 m is as follows.
There are 8 routes shown in total.

The fixed shaft 4 also includes a suction chamber 30 for the rotating shaft 3.
It has an artificial nozzle 41 and a nozzle 42 communicating with the discharge chamber 33. Both nozzles are connected to a compressor 64. as shown in FIG. Connect to receiver 61.

Further, a seal 46 for preventing leakage of gaseous refrigerant is provided between the two rotating shafts 3 and the fixed shaft 4.

Further, as shown in FIGS. 7 and 8, the outgoing tube 11 is twisted by approximately 15 to 20 degrees between the inner circumferential portion 111 and the outer circumferential portion 112. This twisting of the tube is the same for the return tube 12 as well.

Further, the outer peripheral portion 122 of the return tube 12 is sandwiched and bonded between the two halves of the annular tank 2, as shown in FIG. This statement also applies to the outer peripheral portion 112 of the outward tube 11. Note that the fixed shaft 4 is as shown in FIG.

It is fixed to the vehicle body using a bracket 45.

Next, each action and effect will be explained.

First, when the electric motor 5 is rotated (in the direction of the arrow in Figure 1),
As a result, the rotating shaft 3. Outward tube 11° Return tube 12. The annular tank 2 rotates integrally. Therefore, the compressor 64 supplies refrigerant to the heat exchanger H through the nozzle 41.

The refrigerant is supplied to the nozzle 41. Suction chamber 30. Outbound Duupe 11
It then enters the turn room 2o of the annular tank 2. The refrigerant then enters the discharge chamber 33 from the turn room 2o via the return tube 12, passes through the nozzle 42, and enters the receiver 6■.

Then, the refrigerant is transferred to the outgoing tube 11. Turn room 20. In the return tube 12, heat is exchanged with the outside air and the heat is radiated to the outside air. Note that the refrigerant is cooled by the outside air and passes through the outgoing tube 11. In particular, it becomes liquid in the return tube 12 and is discharged from the discharge chamber 33 along with a part of the gas refrigerant flow.

In the heat exchanger H of this example, the outgoing tube 11. for performing heat exchange. Since the return tube 12 protrudes separately from the rotating shaft 3, the contact area with the outside air is large.
In addition, even at low rotations (500 to 101,000 rpm), it is possible to easily maintain a high relative wind speed with the air.Furthermore, the four-car tubes 11 and 12 are rotating, and the tube 1112 is twisted as described above. Because of this, the outside air around the tube becomes turbulent.Therefore, it exhibits excellent heat exchange ability.

Further, the tubes 11 and 12 radially protrude from the one-rotation shaft 3 and have a small thickness in the axial direction, so the thickness in the axial direction is thin.

Therefore, the heat exchanger H of the fifth example has excellent heat exchange ability and is thin.

In addition, in these two examples, the heat exchanger H is used in the condenser of an automobile air conditioner, so the heat exchanger can be rotated at any speed even when the automobile is running at low speed or when idling. In addition, the desired heat exchange ability can be exhibited. In addition, in the conventional heat exchanger, heat exchange was performed by blowing air using a blowing fan, and the fan was rotated by being connected to the engine pulley by a heald. Therefore, the amount of air blown is insufficient when the vehicle is idling.

It was not possible to obtain sufficient cooling capacity.

Second Embodiment This embodiment relates to a heat exchanger for a radiator as shown in FIGS. 10 and 11.

The heat exchanger is provided with a liquid vibrator 15 for returning liquid refrigerant adjacent to the return tube 12.

The liquid pipe 15 connects its artificial part 151 to the turn room 2.
0 near the outer wall, and its outlet 152 opens into the discharge chamber 33 in the same way as the inner circumference 122 of the return tube 12. The rest is the same as the first embodiment.

In this example as well, the refrigerant 5 is in the suction chamber 30. Outbound tube 1
], Turn Room 20. Return tube 12, discharge chamber 33
It passes through the thread path. At this time, the gas refrigerant radiates heat in the outgoing duplex 1 and the incoming tube 12, and the refrigerant is cooled and becomes liquid. and.

The liquid refrigerant 60 produced while passing through the outgoing tube 11 is the 10th liquid refrigerant.
Enter the turn room 20 as shown in the figure.

Since the liquid refrigerant 60 has a higher specific gravity than gas, it is pushed outward of the turn room 20 by the rotation of the heat exchanger and accumulates near the partition wall 21 at the rear in the direction of rotation (arrow). Therefore, in one example, this liquid refrigerant 60
is led out to the discharge chamber 33 side through the liquid pipe 15.

Therefore, the heat exchanger in this example is a radiator with a built-in liquid refrigerant separation.

According to this example, since the liquid refrigerant 60 is led out through the liquid pipe 15, the liquid refrigerant 60 in the turn room 20 does not enter the return tube 12. Therefore, return tube 12
The gas refrigerant inside is efficiently used for heat exchange.

Therefore, compared to the first embodiment, the heat exchangers of the two examples have the following characteristics:
Furthermore, it has excellent heat exchange efficiency. Furthermore, the same effects as in the first embodiment can be obtained in the nine embodiments.

Third embodiment This example is shown in FIGS. 12 and 13.

This invention relates to a heat exchanger for a heat absorber.

The heat exchanger is adjacent to the five return tubes 12.

An oil pipe 16 is provided for separating the refrigerating machine oil 69 mixed into the refrigerant.

The oil pipe 16 is provided at the rear of the return tube 12 (with respect to the rotational direction), and its inlet portion 161 is provided in the turn room 20, and its outlet portion 162 is provided in the oil discharge chamber 34 provided in the rotating shaft 3.
It is open to In addition, a plate 25 for two compartments is provided in front of the second entry section 161 with a portion of the return tube 12 extended to protrude close to the outer periphery of the turn room 20.

The gap between the two is about 1 to 2 mm. The rest is the same as the first embodiment.

In this example as well, the refrigerant is supplied through one artificial nozzle 4] and the suction chamber 30.
．． Outbound Dupu 11. Return tube I2° discharge chamber 33.
It passes through the yarn path of the outlet nozzle 42. As a result, the outgoing tube 11. The outside air is cooled in the return tube 12.

In addition, since the refrigerating machine oil 69 mixed in the refrigerant has a high specific gravity, it is scattered from the outgoing tube 11 into the turn room 20 due to the centrifugal force of one rotation, and further into the turn room 20.
being pushed backwards. The refrigerating machine oil 69 is supplied to the partition wall 21 from between the plate 25 and the outer wall of the turn room.
and the plate 25. Next, the refrigerating machine oil 6
9 is Yuzu vibe 16. The oil is discharged from the oil nozzle 43 through the oil discharge chamber 34. That is, the heat exchangers of the two examples are heat absorbers with built-in oil separation.

According to this example, in addition to obtaining the same effects as the first example,
Refrigerating machine oil mixed into the refrigerant can be efficiently removed.

In addition, if refrigeration oil is mixed in the refrigerant, it will take away the heat generated by the refrigerant and reduce the cooling performance. In this example, since the refrigerating machine oil can be efficiently removed, the heat exchange efficiency of the heat absorber is further improved.

[Brief explanation of drawings]

1 to 9 show the heat exchanger of the first embodiment, and FIG. 1 is a sectional view taken along the line A-A in FIG. 4, FIG.
The figure is a system diagram of the cooling system, and Figure 4 is a cross-sectional view of the rotating shaft.
5 is a sectional view taken along the line B-13 in FIG. 1, FIG. 6 is a sectional view of the annular tank portion, and FIGS. 57, 8, and 9 are plan views of the outward tube. 10 and 11 show the heat exchanger of the second embodiment, FIG. 10 is a partially cutaway sectional view of the tube portion thereof, FIG. 11 is a sectional view of the rotating shaft portion, and FIG. 13 and 13 show a heat exchanger according to a third embodiment, FIG. 12 is a partially cutaway sectional view of the tube portion, and FIG. 13 is a sectional view of the rotating shaft portion. 69, Refrigerating machine oil.

Claims (1)

[Scope of Claims] A rotating shaft, a number of tubes for heat exchange connected radially to the rotating shaft, an annular tank communicating with the outer peripheral opening of the tube, and a fixing member that supports the rotating shaft. The rotary shaft has a suction chamber for supplying a heat medium and a discharge chamber for discharging the heat medium, and the tube has an outgoing tube communicating with the suction chamber and the discharge chamber. The annular tank is divided into a plurality of turn rooms in which the outgoing tube and the incoming tube communicate with each other as a set, so that the heat medium flows from the suction chamber to the outgoing tube, the turn room, and the incoming tube. A heat exchanger characterized in that a path is formed through a tube to a discharge chamber, and further, an inlet nozzle and an outlet nozzle communicating with a suction chamber and a discharge chamber of the rotating shaft are arranged on the fixed shaft.