JPS60200063A - Drier for air-cooling system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present BA relates to a drying device for an absorption cooling system that utilizes an adsorbent such as zeolite.

Configuration of conventional example and its problems A conventional absorption cooling system will be explained with reference to Figs. 5 and 6. 1 shows the entire cooling system, and 2 shows a metal structure simply filled with adsorbent 3 such as zeolite. This is a drying device that includes a storage tank 4 made of aluminum, and a heater 6 such as a gas burner installed at the bottom of the storage tank 4. 6 is a condenser that condenses the refrigerant, 7 is a refrigerant tank that stores the condensed and liquid refrigerant, and 8 is an evaporator that evaporates the refrigerant. The elements are connected and piped with steel pipes, etc. Further, a refrigerant condensation amount adjusting pulp 10 is provided at the outlet 9 of the storage tank 4, a refrigerant adsorption amount adjusting pulp 12 is provided at the inlet portion 11, and a refrigerant evaporation amount adjusting pulp 13 is provided at the outlet side of the refrigerant tank 7. The inside of this pipe is previously depressurized by evacuation or the like.

Next, the operating status of this cooling system 1 will be explained.

First, the condensation amount adjusting pulp 1o is opened, the adsorption amount adjusting pulp 12 and the evaporation amount adjusting pulp 13 are closed, and the storage tank 4 is heated by operating the heater 6. As a result, the adsorbent inside the storage tank 4 that has already adsorbed the refrigerant is heated, and the refrigerant is desorbed again. Next, this refrigerant is condensed in a condenser 6 to become a liquid refrigerant and stored in a refrigerant tank 7.

When a predetermined amount of liquid refrigerant has accumulated, the condensation amount adjustment valve 1° is closed, the heating device 5 is turned off, and although not shown in the figure, a conventional cooling device such as air cooling or water cooling provided in the drying device 2 is activated. By cooling the storage tank 4, the adsorbent 3
to cool down. Next, the adsorption amount adjustment valve 12 is opened, and the evaporation amount adjustment valve 13 is adjusted according to the capacity of the evaporator 8 to transport the refrigerant to the evaporator 8. The evaporator 8 is usually set in an indoor unit of an air conditioner, and is discharged into the room as cool air by a blower fan 14 or the like.

However, in the drying device 2 of the cooling system 1 shown above, since the absorbent 3 is simply stored in the metal storage tank 4, first, when the refrigerant is desorbed, Heat could only be transferred to the adsorbent 3 through the container wall of the storage tank 4. In addition, since the adsorbent 3 is an inorganic powder such as zeolite or silica gel, the thermal conductivity of the adsorbent 3 itself is extremely low compared to metal, so it acts as a heat insulator.
It is not easy to heat up to the adsorbent 3 located in the center of the storage tank 4, it is difficult to completely desorb the adsorbed refrigerant, and the heating takes a considerable amount of time. If this is avoided and the capacity of the heater 5 is increased, the cost of fuel such as gas will be increased, and the material constituting the storage tank 4 will deteriorate, and the heater 5
There was a problem that the adsorbent 3 in the storage tank 4 near the storage tank 4 was heated to an extremely high temperature, and the adsorbent 3 itself deteriorated.

Also, when adsorbing refrigerant, the inlet 1 of the storage tank 4
If the powdered adsorbent 3 is strongly aggregated due to the influence of the refrigerant such as water that has entered through the storage tank 1, the adsorption effect of the refrigerant on the adsorbent 3 will be extremely reduced. Only the adsorbent 3 near the part 11 acts, and after the adsorption capacity reaches saturation, the refrigerant moves to the adsorbent 3 inside.
Due to the adsorption method such as a diffusion phenomenon, the adsorption effect of the adsorbent 3 may be reduced. Similarly, when changing from refrigerant desorption operation to adsorption operation in dryer 2, air cooling, etc.
Even when the storage tank 4 is cooled, only the adsorbent 3 near the inner wall of the storage tank 4 is cooled;
may reach a high temperature state, and if refrigerant adsorption operation is performed in this state, only the adsorbent 3 near the inner wall surface of the storage tank 4 may not be able to adsorb the refrigerant. This also has the disadvantage of reducing cooling capacity.

Purpose of the Invention The present invention relates to a drying device for an absorption cooling system that utilizes the effect of an adsorbent such as zeolite absorbing a refrigerant such as water or fluorocarbon gas. The purpose is to facilitate the adsorption and desorption of.

Structure of the Invention In order to achieve this object, the present invention provides a drying device f1?1 having an adsorbent storage tank in an absorption cooling system, in which the inside of this storage tank is divided into a plurality of parts by heat exchange plates, and A through pipe is attached to the storage tank, which has grooves such as irregularities on the inner surface, which penetrates the heat exchange plate of the storage tank and also passes through the storage tank. 9, which improves heat exchange between hot air (during desorption operation) and cold air (during adsorption operation).

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Structures that are the same as those of the prior art will be designated by the same reference numerals and detailed explanations thereof will be omitted.

15 is a storage tank containing an adsorbent 16 such as zeolite made of metal such as copper or stainless steel, and a large number of through pipes 17a, 17b... and a heat exchange plate 18a,
Consists of 18b... Also, the through pipe 17a, 1-rb
-= has a large number of grooves 20a and 2ob on the inner surface.

20 c..., and is penetrated into the inside of the cylindrical storage tank 16 from the top surface to the bottom surface, and has a through pipe, 1
ya, 17b, etc. are multi-joined by welding or the like at the contact portion of the quantum surface, so that the adsorbent 16 does not come into contact with the outside air.
A completely sealed storage tank 15 is obtained.

The inside of the storage tank 16 includes through pipes 17a, 17b...
and a large number of other holes 19a.

Heat exchange plates 18a, 18b, . . . having heat exchange plates 19b, 19c, 19d, . . . are arranged vertically with appropriate intervals. The through pipes 17a, 1γb... penetrate these heat exchange plates 118a, 18b...,
The contact portions between the through tubes 17a, 17b... and the heat exchange plates 18a, 18b are fixed by welding or the like, and the adsorbent 16 is attached to the through tubes 17a, 17b... and the heat exchange plates 18a, 18b. In a state where the rooms are partitioned by mountains,
The storage tank 15 is filled. A heater 5 is provided on the lower surface of the storage tank 15, which is one opening of the through pipes 17a, 17b, . . . .

The storage tank 15 thus produced is used in place of the storage tank 4 of the cooling system 1 shown in the conventional example.

In the cooling system 1 equipped with the drying device 2 having the storage tank 15 configured as described above, when the refrigerant of the adsorbent 16 is desorbed, the heat of the heater 5 installed at the bottom of the storage tank 15 is , not only the wall portion of the storage tank 15 but also the through pipe 17a.

17b... heat exchange plate) 18a, 18
b... is also conducted to the adsorbent 16. For this reason,
The adsorbent 16 located at a location in the storage tank 15 can also be heated uniformly. Also, a through pipe 17a.

17b... and the heat exchange plates 18a, 18b... are made of metal, especially the through pipes 17a, 17b...
... has a large number of grooves 20a, 20b... on its inner surface and has a large heat transfer area, so it easily absorbs the heat of the heater 5 and can heat the adsorbent 16 to a predetermined temperature in a short time. , the energy required for heating is saved.

Also, the ojj passage pipes 17a, 17b-double groove 20a
, compared to when there is no 20b, the through pipes 17a, 17b...
- The number of adsorbents itself can be reduced, and even if the size of the storage tank 4 is constant, a large amount of adsorbent can be filled, and the number of desorption operation cycles can be reduced.

In addition, when adsorbing the refrigerant from the adsorbent 16, first,
It is necessary to cool the adsorbent 16 such as zeolite to a temperature at which it can adsorb.Although not shown in the figure, the cooling heat from air cooling or water cooling stored in the drying device 2 is transferred to a storage tank. Not only from the wall surface of 15, but also from the through pipe 17a.
, 17b... and heat exchange plates 18a, 18b...
... is also transmitted to the adsorbent 16. Therefore, the adsorbent 16 in various places can be cooled uniformly and in a short time.
a.

2 ob..., and for the same reason as during desorption, the energy required for cooling the adsorbent in the storage tank 15 can be saved. That is, compared to the case where the through pipes 17a and 17b are straight pipes without grooves 20a and 20b, the number can be reduced, the amount of adsorbent filled can be increased, and the cooling cycle of the adsorbent can be reduced. There is an effect that can be done.

Effects of the Invention As is clear from the above explanation, the drying device of the cooling system of the present invention provides a storage tank containing zeolite etc. with a through pipe having grooves such as irregularities on the inner surface, and further includes the through pipe inside the storage tank. A metal heat exchange plate having multiple holes through which the adsorbent is inserted is set at appropriate intervals, the space is filled with the adsorbent, and a heater is provided on the open side of the storage tank,
During the adsorption/desorption operation of refrigerant from the adsorbent, heat from the heater and cooling device installed in the drying equipment can be transferred in a short time.In particular, the through pipe has grooves on the inner surface and has a large heat transfer area. is larger, and the number of through pipes is smaller than when there is no groove, so material costs are saved, and a large amount of adsorbent such as zeolite can be filled and stored, extending the operating time of the cooling system. There is an effect that can be done.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a main part of an adsorbent drying device showing an embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view of section A in Fig. 1, and Fig. 3 is a cross-sectional view of a through pipe in Fig. 1. 4 is a system diagram of an absorption cooling system showing an embodiment of the present invention, and FIG.
The figure is a sectional view of the main part of a conventional adsorbent drying device.
The figure is a system diagram of a conventional absorption cooling system. 15...Storage tank, 16...Adsorbent,
17a...Penetration pipe, 18a...Heat exchange plate, Figure 1/'hL Figure 3, Figure 4

Claims (1)

[Claims] A storage tank containing an adsorbent, a heater that heats the storage tank, a condenser that condenses the refrigerant desorbed by heating the adsorbent, a refrigerant tank that stores the condensed refrigerant, and a refrigerant. and an evaporator for evaporating the storage tank, the inside of the storage tank is divided into a plurality of parts by a heat exchange plate, and a through pipe having a groove on the inner surface that penetrates the heat exchange plate and also penetrates the storage tank is stored. Attach it to the tank,
A drying device for a cooling system, in which the heater is arranged on one opening side of the through pipe.