JP2927603B2 - Particle flow heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for exchanging heat between an air stream and a high-temperature fluid or between an air stream and a low-temperature fluid.

[0002]

[Prior art]

(Prior Art 1) FIG. 5 shows a configuration diagram of a conventional particle flow heat exchange apparatus for floating solid particles in a gas stream. In this heat exchange apparatus, as shown in FIG. 5, an air flow 4 is sent from a lower part of the heat exchanger 2 through an air flow distribution plate 3 by a blower 1, and the particles 5 float and flow around the heat exchanger 2 to generate heat. In this configuration, the heat of the heat transfer tube group 2a or the fin group 2b of the heat exchanger 2 is radiated to the air flow and discharged to the outside while promoting the exchange and preventing the particles from being scattered by the outflow prevention plate 6 provided thereon. is there.

(Prior Art 2) FIG. 4 is a block diagram of a particle flow heat exchange apparatus showing another prior art. In the prior art 2, as shown in the figure, by circulating the particles 5 in the airflow passage 7, the energy loss required for floating the particles 5 is reduced.

[0004]

However, in the above prior art 1, the energy of the gas flow 4 is consumed to keep all the particles 5 in a floating state, and the heat exchanger 2 is located in the gas flow passage. Therefore, it is necessary to cover the pressure loss of the heat exchanger 2.

[0005] Therefore, the energy loss of the airflow 4 is very large, requiring an excessive blower power, and the noise is inevitably increased. In addition, if the air volume is small, the particles do not float and the heat exchange promoting effect is small.On the other hand, if the air volume is large, the particles scatter around the heat exchanger and are biased near the outflow prevention plate. The range is extremely small. Therefore, even if an attempt is made to change the amount of heat exchange by changing the air volume, the effect is hardly obtained.

[0006] Also in the prior art 2, since the heat exchanger 2 is disposed in the airflow passage 7, the energy of the airflow 4 must cover the pressure loss of the heat exchanger 2. Moreover, since the outflow prevention plate 6 is located downstream of the airflow passage 7 and below the heat exchanger 2, solid particles are deposited on the outflow prevention plate 6, and the particles deposited on the outflow prevention plate 6 The consumption of the airflow energy due to the pressure loss becomes large.

Further, the air volume and the particle circulation volume are in a proportional relationship, and cannot be independently varied. Therefore, when the amount of circulating particles changes due to a change in operating conditions such as the air volume, the surplus particles 5 are removed from the airflow dispersion plate 3 and the outflow prevention plate 6.
Around the heat exchanger, the pressure loss increases and the heat exchanger 2
Had disadvantages such as unstable performance.

Further, regarding deodorization from indoor air,
As seen in general air conditioners, there are many disposable types in which activated carbon is installed in the filter part of the air inlet and replaced after 3 to 6 months, but other devices such as ozone generation are required. .

In view of the above, the present invention seeks to improve the performance and reduce noise by reducing the pressure loss of the heat exchanger, and to vary the air volume and the particle circulation volume independently and to change the combination thereof. It is an object of the present invention to enable a multi-stage variable heat exchange capacity.

[0010] Further, even if the amount of circulating particles changes due to operating conditions, the heat exchange performance is stabilized, and the deodorization from room air is regenerated with porous particles instead of disposable filters. The purpose is to achieve a maintenance-free configuration with a possible configuration.

[0011]

SUMMARY in accordance with the present onset bright SUMMARY OF THE INVENTION, the particle reservoir 18 for reserving the solid particles 12 in the vicinity of the heat exchanger 11, another particle collection channel and the air flow passage 13 19, a particle supply plate 2 that drops the solid particles 12 into the airflow passage 13 below the particle storage unit 18.
0, and the particle supply plate 20 has a large number of holes 27a.
And a movable supply plate 28 having a large number of holes 28a. The movable supply plate 28 is moved along the fixed supply plate 27, and the movable supply plate 28 is formed by overlapping of the two. Driving means 29 for changing the hole area
Is provided.

[0012] Then, the solid particles 12 is composed of odor adsorbent for adsorbing odor in the air flow 26.

[0013] The particles 12, the odor in the air stream 26 may be a material removable by heat, the heating means 30 for heating the particles 12 are provided, the airflow discharge portion of the air flow passage 13, the airflow 26 Indoor side A and outdoor side B of the apparatus main body 10
A damper 32 for discharging to either one of them is provided.

[0014]

In the means for solving the above problems, the point largely different from the conventional example is that the heat receiving from the heat exchanger 11 to the particles 12 and the heat radiation from the particles 12 to the gas flow 26 are separated from each other by the flow paths 13,
19, the airflow 26 is caused to have the suspended particles 1
2 and transport the particles 12 along the way.
From the heat.

That is, heat is transferred from the heat exchanger 11 to the particles 12 in the particle storage 18 by using the periphery of the heat exchanger 11 as the particle storage 18. The airflow 26 flows through the heat exchanger 11
The without passing through, along with the particle element 12 you fall from the particle supply plate 20 at the bottom of the particle reservoir 18, separately increase the duct 16
Then, the liquid is guided to the upper chamber 17 and discharged from the outflow prevention plate 21 to the outside of the apparatus. The particles 12 return from the outflow prevention plate 21 to the upper part of the particle storage unit 18 along the inclined surface thereof through the particle collection unit 24.

Therefore, the energy required for the airflow is only the energy for transporting the suspended particles and the pressure loss of the outflow prevention plate, and low pressure loss and low noise can be achieved.

When the amount of circulating particles is varied, the air flow
Particle supply plate 2 below particle storage unit 18 through which no 26 passes
In the case of 0, the movable supply plate 28 is driven by the driving means 29 to change the opening area thereof, and it is possible to adjust the particle circulation amount.

The rotation speed of the blower 14 and the particle supply plate 2
By changing the opening area of 0, the air volume and the particle circulation volume can be independently varied, and considering the combination of the two, the heat exchange capacity can be varied in multiple stages.

[0019] Then, when the heat exchange of the airborne particles 12 and the airflow 26, simultaneously adsorbs odor in the air flow 26, odors particles
It may be held in the pores in the 12, is heated by an electric heater as a heating unit 30 of the particle reservoir 18, the particles 12 emit bad <br/> odor gas, follow the switching of the outflow preventing changeover damper 32 Then, this gas is released to the outdoor side B , and the particles 12 are regenerated.

[0020]

【Example】

(First Embodiment) FIG. 1 is a configuration diagram showing a first embodiment of a particle fluidized heat exchanger according to the present invention, and FIG. 2 is a sectional view showing details of a particle storage section.

This embodiment is provided with a heat exchanger 11, solid particles 12 floating and flowing in the heat exchanger 11, an air flow passage 13 for passing an air flow, and a blower 14 for generating an air flow. .

The heat exchanger 11 is composed of a heat transfer tube group 11a, and allows a high-temperature fluid or a low-temperature fluid to flow through the heat transfer tubes to exchange heat with the solid particles 12.

The solid particles 12 include silica, alumina,
It is made of glass, river sand, copper, iron or the like in addition to polystyrene or the like, and has a diameter of 0.1 mm to 1 mm.

As shown in FIG. 1, the air flow passage 13 is formed in a U-shape when viewed from the side. The blower 14 is disposed at the lower end of the air flow passage 13. 16 and an upper chamber 17 which is continuous with the upper part of the rising duct 16.

Then, the solid particles 12 are transferred to the heat exchanger 11.
A particle storage section 18 is provided in a particle collection flow path 19 separate from the air flow passage 13. The solid particles 12 are communicated with the drop chamber 15 of the airflow passage 13 at the lower portion of the particle storage 18 so that the solid particles 12 pass through the airflow passage 1.
3 is provided.

Further, the downstream side of the upper chamber 17 of the air flow passage 13, outflow prevention plate 21 a number of holes 21a grain terminal 12 to discharge the air flow 26 to the outside is prevented from flowing out are formed Is provided. This outflow prevention plate 21
Are inclined so that the particles 12 carried along with the airflow 26 can easily fall down. The diameter of the large number of holes 21a is smaller than the diameter of the particle element 12.

The airflow passage 13 is located closer than the outflow prevention plate 21.
A communication port 23 for collecting the solid particles 12 radiated or received in the airflow passage 13 by gravity is formed in the upper chamber 17 on the upstream side above the particle storage section 18. In addition, a portion extending from the lower side of the outflow prevention plate 21 to the communication port 23 is formed in a rectangular shape in cross section, and this portion is used as a particle collection unit 24. The bottom of the particle recovery unit 24 is inclined, and is set so that the solid particles 12 easily roll into the communication port 23 of the particle storage unit 18.

In this embodiment, in particular, the particle supply plate 20 is a fixed supply plate 27 having a large number of holes 27a.
And a movable supply plate 28 in which a number of holes 28a are formed. Driving means 29 is provided for moving the movable supply plate 28 along the fixed supply plate 27 and making the hole area generated by the overlap of the two movable. The driving means 29 is composed of a motor and a pinion or a rack connected to the motor.

In the above configuration, the air flow from the blower 14
The particles 26 are guided from the falling chamber 15 to the upper chamber 17 together with the particles 12 via the rising duct 16 and are discharged from the outflow prevention plate 21 to the outside of the apparatus. The particles 12 are separated by the outflow prevention plate 21 and collected. It returns to the upper part of the particle storage part 18 via the part 24.

The particles 12 in the particle storage 18 are transferred to the heat exchanger 1
While receiving the heat from No. 1, the particles fall from the perforations 27 a and 28 a of the particle supply plate 20 at the lower end to the lower drop chamber 15. The dropped particles 12, the blower become by connexion floating in air stream 26 from 14, rises through the rising duct 16, the airflow 26 from the particles 12 in a high temperature state in the developing
The heat is dissipated. The particles 12 reaching the upper chamber 17 are:
Although it collides with the porous outflow prevention plate 21, since the hole diameter of the outflow prevention plate 21 is smaller than the particle diameter, the particles 12 fall to the particle collection unit 24 by gravity without going out of the apparatus, and are radiated by the heat from the particles 12. Only the hot airflow 26 is discharged out of the apparatus.

The particles 12 that have fallen into the particle collection unit 24 reach the upper part of the particle storage unit 18 while rolling along the inclination thereof, and return to the initial state.

As described above, the air flow 26 from the blower 14
Transports the suspended particles 12 from the falling chamber 15 to the upper part, and only receives the heat radiation of the particles 12 on the way. The only energy loss is the loss due to the transportation and the pressure loss of the outflow prevention plate 21. Therefore, it is clear that the pressure loss is small, which is advantageous for noise reduction.

Further, even if the amount of circulating particles increases or decreases, the heat exchange device has only a small increase or decrease in the storage amount of the particle storage unit 18, and has little influence on the pressure loss and heat exchange performance of the device and is stable. You can drive.

When the amount of circulating particles is varied, the air flow
Particle supply plate 2 below particle storage unit 18 through which no 26 passes
When the movable supply plate 28 is driven by the motor of the driving means 29, the aperture area of the movable supply plate 28 can be changed to adjust the particle circulation amount.

The rotation speed of the blower 14 and the particle supply plate 2
By changing the opening area of 0, the air volume and the particle circulation volume can be independently varied.

As described above, changing the air volume changes the heat exchange from the particles to the air flow, and changing the particle circulation amount changes the heat transfer from the heat exchanger to the particles. The capacity can be varied in multiple stages.

(Second Embodiment) FIG. 3 is a block diagram showing a second embodiment of the particle flow heat exchange apparatus of the present invention.

[0038] In this embodiment, the grain element 12, the porous material detachable odor in the air flow 26 by heat, for example, and a granular activated carbon.

The heating means 30 for heating the particles 12
Are disposed in the particle storage 18. This heating means 30
Is an electric heater, for example, and may use heat of a condenser or a compressor.

A discharge port 31 for discharging the gas stream 26 to the outside of the air flow passage 13 is formed in the apparatus main body 10 in the upper chamber 17, and the discharge port 31 and a particle outflow port having a large number of holes 21a are formed. A damper 32 is supported to be switchable between the protection plate 21 and the airflow 26 so that the airflow 26
Is discharged to one of the indoor side A and the outdoor side B.

In the above configuration, the airflow 26 from the room
Are passed through the ascending duct 16 to the upper chamber 17 together with the particles 12 falling from the particle supply plate 20 without passing through the heat exchanger 11, and are switched to the indoor side A according to the switching of the outflow prevention switching damper 32. Or it is blown out to the outdoor side B.

The particles 12 are made of a material capable of desorbing odors by heat, such as granular activated carbon. returned to, as appropriate to the electric heater 30 as a heating unit that is built into the particle reservoir 18, Yotsute, malodorous is desorbed to energization.

The basic operation is as follows. The heat flow from the heat exchanger 11 to the particles 12 and the heat radiation from the particles 12 to the gas flow 26 are caused to flow through the separated flow passages 13 and 19, respectively. Bears only the role of transporting suspended particles 12,
On the way, heat exchange and deodorization are performed with the particles 12, and this point is the same as in the first embodiment, and the operation and effect are also the same.

As for deodorization, when the floating particles 12 exchange heat with the airflow 26, the odor in the airflow 26 is simultaneously adsorbed, and the odor is retained in the pores in the particles 12 . This particle
Since the adsorption performance of No. 12 decreases in proportion to the operation time, the operation time is integrated, and at the time of off-loading after a certain period of time, the electric heater 30 or the like as a heating means is energized, and the particle size is reduced. > The child 12 is heated to release odor, and in response to this, the switching damper 32 is switched to the outdoor side B , and the odor is discharged to the outdoor side B without releasing to the room. Due to the release of the offensive odor, the adsorption performance of the particles 12 is regenerated.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention. For example, in the above embodiment, the heat exchanger is described as a condenser, but the same effect can be expected even with an evaporator. Further, in the above embodiment, the heat exchanger includes only the heat transfer tube group. However, it is needless to say that the heat exchanger to which the fin group is attached may be used.

[0046]

As is clear from the description above, according to the present invention, according to this invention, heat from the heat exchanger into particles (or dissipating)
In addition, since the heat radiation (or heat reception) from the particles to the airflow is performed in the separate flow paths, the energy loss of the airflow from the blower is reduced, and excessive blower power is unnecessary. In addition, noise reduction can be achieved.

Further, even with respect to the fluctuation of the amount of circulating particles, the fluctuation can be absorbed by the particle reservoir, and the adverse effect on the performance can be suppressed.

[0048] Furthermore, when varying the particle element circulation amount of the lower particle supply plate of the particle reservoir air flow does not pass,
Driving the movable supply plate to change its opening area and adjust the particle circulation amount.Also, by changing the number of rotations of the blower and the opening area of the particle supply plate, the air flow and the particle circulation amount can be changed independently. This has the effect that the heat exchange capacity can be varied in multiple stages by a combination of the two.

[0049] Further, the solid particles are, or consist odor adsorbent for adsorbing odor in the air flow, squirrel as they may the odor in the air flow which is composed of a detachable material by heat, odor contained in the room air Can be removed. Moreover, even if the adsorption performance of the particles is reduced in proportion to the operation time, the operation time is integrated, and at the time of off-load after a certain period of time, electricity is supplied to an electric heater or the like as a heating means to heat the particles. An excellent effect such as maintenance-free deodorization can be expected if the released odor is discharged to the outdoor side by the switching operation of the switching damper.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a particle flow heat exchange apparatus according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing details of the particle storage unit.

FIG. 3 is a configuration diagram of a particle flow heat exchange device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a particle flow heat exchange device according to prior art 2.

FIG. 5 is a configuration diagram of a particle flow heat exchange device according to prior art 1.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Heat exchanger 12 Solid particle 13 Air flow passageway 14 Blower 15 Drop chamber 16 Elevating duct 17 Upper chamber 18 Particle storage part 19 Particle recovery flow path 20 Particle supply plate 21 Outflow prevention plate 23 Communication port 24 Particle recovery part 26 Airflow 27 Fixed Supply plate 28 Movable supply plate 29 Driving means 30 Heating means 32 Damper

Claims (3)

(57) [Claims] 1. A heat exchanger, a solid particle floating and flowing in the heat exchanger, an air flow passage for passing an air flow, and a blower for generating an air flow, wherein the solid particles float and flow in the air flow. In the particle-flow heat exchange device, the solid particles may be an odor adsorbent that adsorbs odor in an airflow.
A fluidized particle flow heat exchange device comprising: 2. A heat exchanger, solid particles floating and flowing in the heat exchanger, an airflow passage for passing an airflow, and a blower for generating an airflow, wherein the solid particles float and flow in the airflow. In the particle flow heat exchange device, the solid particles can desorb odors in an airflow by heat.
Is composed of a material, provided with heating means for heating the particles, the air flow passage, the indoor side of the apparatus main body air flow and outdoor
Particle flow heat exchanger and wherein the damper for discharging to either side is provided et the. 3. The solid particles are stored around a heat exchanger.
The particle storage section to be separated is a particle collection flow separate from the airflow passage.
Provided in the passage, under the particle reservoir, communicating with the airflow passage.
A particle supply plate for dropping solid particles into the airflow passage is provided.
The airflow is discharged to the outside downstream of the airflow passage, and the solid particles are discharged.
An outflow prevention plate is provided to prevent the child from flowing out.
Upstream of the outflow prevention plate in the airflow passage,
Above the reservoir, solid particles that have radiated or received heat through the airflow passage
A communication port for collecting particles by gravity is formed, and the particle supply plate is a fixed supply plate having a large number of holes formed therein.
And a movable supply plate with many holes formed.
The movable supply plate is moved along the fixed supply plate,
Driving hand for changing the hole area caused by overlapping
3. A step according to claim 1, wherein a step is provided.
Fluid heat exchange apparatus particle.