CN214332915U - Perforated heat and mass exchanger - Google Patents

Abstract

The utility model discloses a perforation heat exchanger, it comprises a right trapezoid cavity and a perforation flat board, the side is parallel about the right trapezoid cavity, goes up the side and is the vertical edge, and the downside is the hypotenuse, and the cavity left surface divides into two parts about doing again, big-end-up, upper portion opening, cavity backplate left end lower part opening, bottom plate right-hand member opening down, the front panel fluting, and the left end in groove is located lower part boundary department on the left surface, and the right-hand member in groove is located bottom plate opening left end department. The perforated flat plate is arranged in the trapezoidal cavity and divides the trapezoidal cavity into an upper part and a lower part, the perforated flat plate is provided with uniform holes, the right side of each hole is provided with a baffle, and the lower wall surface of the perforated flat plate is laid with a thin layer of a water-absorbing porous medium. The perforated flat plate is provided with a porous medium thin layer which penetrates through a groove formed in the front panel and then penetrates into the water storage capillary immediately. The utility model has the advantages that: simple structure, reasonable flow organization, easy to form the air conditioner with large power and square and beautiful appearance.

Description

Perforated heat and mass exchanger

Technical Field

The utility model relates to an evaporation refrigeration technology field specifically is a perforation heat and mass exchanger.

Background

China faces very serious energy and environmental challenges. In energy consumption, the total consumption of building energy is about 10 hundred million tons of standard coal, which accounts for about 30 percent of the total energy consumption of the whole country; and the total carbon emission of the building is 19.6 hundred million tons, which accounts for about 19.0 percent of the national energy carbon emission, wherein the compression type evaporation refrigeration air conditioner contributes more than 50 percent of the energy consumption and the carbon emission of the building. At present, the energy efficiency ratio EER of a compression type evaporative refrigeration air conditioner is about 4-5, and reaches a very high level, and the lifting space is very limited. It has been very difficult to reduce the energy consumption and discharge of the air conditioner for buildings by improving the energy efficiency on the basis of the conventional compression-type evaporative cooling air conditioner. It is only possible to greatly reduce the energy consumption of the air conditioner by developing a completely new technology. The utility model discloses a refrigeration technology which can realize air self cooling without a compressor, without a refrigerant and only with air self energy. The energy consumption of the new refrigeration technology is only about 20-30% of that of the traditional compression type evaporation refrigeration technology, and the energy efficiency ratio EER of the new evaporation refrigeration technology can reach more than 40, which is nearly 10 times that of the traditional compression type air conditioner. The principle of the new evaporative refrigeration technology is based on the principle of evaporation and temperature reduction of water in air. The principle of evaporation and temperature reduction of water in air is simple, the application history is long, and the water evaporation and temperature reduction device is widely applied to daily life and various large and medium-sized equipment. The method for obtaining cold air by utilizing the principle that water is evaporated and cooled in unsaturated air can be divided into two modes of direct evaporation and cooling and indirect evaporation and cooling. Direct evaporative cooling is an example of direct evaporative cooling in which air and water are in direct contact and the air is cooled by evaporation of the water, for example, an air cooling tower is an example of direct evaporative cooling. The equipment for obtaining cold air based on the mode has a simple structure, but the temperature can only be reduced to the wet bulb temperature of the air at most, and the moisture content of the air after temperature reduction is increased, so that the equipment cannot be used as comfortable air conditioner air supply. The indirect evaporative cooling technology divides air into two parts, one part is sprayed with water to realize direct evaporative cooling, and the other part of air is cooled by the air through a dividing wall type heat exchanger. Indirect evaporation cooling solves the problem that the moisture content of direct evaporation cooling is increased, but the heat exchange efficiency is poor, and the temperature can only be reduced to the temperature of a wet bulb. Hitherto, neither direct nor indirect evaporative cooling equipment, heat exchangers, has been able to reduce the air to a lower dew point temperature, and therefore the resulting cold air is difficult to use as an air supply for comfort air conditioning. The utility model provides a can direct and indirect evaporation cooling mechanism of cyclic utilization, can fall to the air and be close to a perforation heat exchanger that dew point temperature, humidity do not increase, travelling comfort air conditioner air supply can be regarded as to its air-out. The heat and mass exchanger is the core unit of a new generation of air conditioners that replaces the traditional compressor-refrigerant type air conditioners. Because the refrigerating capacity based on the principle of evaporating water from air for cooling is very small, a new generation of air conditioner with the refrigerating capacity of a room needs hundreds of core units of the perforated heat and mass exchanger to be stacked together to meet the requirement, and therefore, the perforated heat and mass exchanger needs to be characterized by capability of forming a stack to keep the appearance of the new generation of air conditioner attractive, simple structure, compact volume, small resistance and high heat and mass exchange efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a following technical scheme: the utility model provides a perforation heat exchanger, perforation heat exchanger comprises a right trapezoid cavity and a perforation flat board, the side is parallel about the right trapezoid cavity, goes up the side and is the vertical edge, and the downside is the hypotenuse, two parts about the right trapezoid cavity left surface is divided into again, and big-end-up is little down, and the mesh is add to the upper portion opening, the mesh is add to right trapezoid cavity backplate left end lower part opening, the mesh is add to bottom plate right-hand member opening below the right trapezoid cavity, the slotting of right trapezoid cavity front panel, the left end in groove are located the left surface and go up lower part boundary department, and the right-hand member in groove is located bottom plate opening left end department. The punching flat plate is arranged in the trapezoidal cavity and divides the trapezoidal cavity into an upper part and a lower part, the punching flat plate is provided with uniform holes, and the right side of each hole is provided with a baffle. And a water-absorbing porous medium thin layer is laid on the lower wall surface of the perforated flat plate. The perforated flat plate is provided with a porous medium thin layer which penetrates through a groove formed in the front panel and then immediately penetrates into the water storage pipe. And the back plates of the left and right side panels of the perforated heat and mass exchanger are both provided with extension sections with certain lengths downwards.

Preferably, the material of the perforated heat and mass exchanger is copper or aluminum material.

Preferably, the wall thickness of the trapezoidal cavity is 0.3-0.5mm

Preferably, the perforated plate has a thickness of 0.03 to 0.2 mm.

Preferably, the area ratio of the left side surface to the right side surface of the trapezoidal cavity is about 7:1

Preferably, the ratio of the upper part to the lower part of the left section of the trapezoidal cavity is 4: 3.

Preferably, the trapezoidal cavity is flat, the average thickness of the cavity is about 5mm, and the sizes of the rest two directions are about 1 m.

Preferably, longitudinal ribs are arranged in the trapezoidal cavity along the length direction, and the rib spacing is about 10 mm.

Preferably, the number of the holes on the perforated flat plate is 3, and the height of the hole edge baffle is about 3 mm.

Preferably, the porous water absorbing material is metal foam.

Preferably, the thickness of the water-absorbing porous material is about 1 mm.

Preferably, the water absorbent material and perforated plate should be tightly immobilized.

Preferably, the water storage pipe is a capillary pipe with the diameter of about 4 mm.

Preferably, the left and right side panels and back panel extend downwardly a length of about 5 mm.

Preferably, all connections of the perforated heat and mass exchanger should be tightly sealed.

Compared with the prior art, the beneficial effects of the utility model are that: the core unit has simple structure, easy manufacture, uniform and reasonable internal airflow organization, small flow resistance and high dew point efficiency, the air inlet and the air outlet are respectively arranged in three different directions and are easy to collect and control, and the air conditioner with high power and square and beautiful appearance of the whole machine can be obtained by simply stacking the core units.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, (a) is a front view, (b) is a bottom view, and (c) is a left view.

Fig. 2 is a schematic view of the working process of the present invention.

Fig. 3 is a representation of the air process of the present invention on an enthalpy-humidity diagram.

Fig. 4 is a schematic view of the stacking assembly of the present invention.

In FIGS. 1-4: 1. the air conditioner comprises an air inlet, 2, a dry channel, 3, an upper side panel, 4, a perforated flat plate, 5, a porous water absorbing material, 6, an air guide folding edge, 7, an air outlet, 8, a right side panel, 9, a lower bottom panel, 10, a wet channel, 11, a perforation, 12, a wet air outlet, 13, a left side panel, 14, an arrow toward the back, 15 and an extension section.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 2 and 3, the process and principles of the present invention are illustrated. The utility model provides a pair of process and principle that perforation heat exchanger realized dew point evaporation cooling explain as follows: the hot air flows into the dry channel 2 from the left air inlet 1, and a part of the air is induced into the wet channel 10 by the air deflector 6 at the opening B and flows reversely to the discharge port 12. Since air is unsaturated, water in the water-containing porous medium layer 5 is evaporated during the flow from B 'to a'. The evaporation requires heat absorption to cause a temperature decrease in the section B 'a' in the porous medium layer 5. The air temperature in the AB section of the dry channel 2 is reduced by flat plate heat transfer and convective heat transfer. Fig. 3 illustrates on an psychrometric chart the process that a-B' -segment air undergoes. A portion of the air, at the section of dry channel B, that has been desuperheated continues to flow onward towards C, where it repeats the process that the section of air of front a-B '-a' undergoes, except that it repeats at a desuperheated level, because the evaporation of the section of water of C 'B' also causes an endothermic cooling, so that the section BC air in dry channel 2 is further cooled on its original basis. The processes that B-C '-B' segment air undergoes are referred to the psychrometric chart of fig. 3 for a better understanding. In fig. 3, the oblique line process line indicates an air process in the lower wet channel 10, which is an isenthalpic cooling process, and the vertical process line indicates an air process in the upper dry channel 2, which is a cooled process with a constant moisture content. The utility model discloses a perforation heat exchanger has realized direct evaporative cooling and indirect evaporative cooling's coupling ingeniously in an equipment, through the continuous repetition of these two kinds of evaporation cooling processes to make the air of the dry passageway in upper portion finally can reach very low dew point temperature, and humidity does not increase yet, consequently can be used as the air supply of travelling comfort air conditioner, discharges from air outlet 7 (E). The air of the wet channel is discharged as working air from the discharge port 12 without use. The utility model discloses a dry passageway 2 is constantly reducing along the flow direction air quantity, and for even flow, so the channel sectional area designs into the convergent, and wet passageway 10 is constantly increasing along the flow direction air quantity, so the channel sectional area designs into gradually drawing together.

Referring to fig. 4, the present invention provides a stacking solution to satisfy the large cooling capacity required by the room air conditioner. The utility model discloses the refrigerating output of (a module shown in fig. 1) is very little, in order to obtain big refrigerating output, can carry out the combination as fig. 4 through rotating 180 with same module to refrigerating output can double. The left side and the right side of each module are provided with extension sections which are mutually butted after rotating for 180 degrees, so that a channel G is naturally formed between the two modules, and the channel G is used for collecting air outlet from an E port together. If the combination of fig. 4 is considered as a unit, hundreds or thousands of such units are stacked directly together to achieve an increase in cooling capacity. Since the three ports for air to enter and exit are designed in three non-intersecting directions, the collection of air in three directions is very easy to realize. For example, the air inlet can be concentrated in one cavity only by adding an interlayer (F channel in the figure) outside. The back of the G channel is blocked, therefore, the wind of all G channels is blown forward to be used as the air supply, the wet air of the wet channel 10 is discharged from the discharge port 12 to the back, and if necessary, only one cavity is added for collection and centralized processing.

Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (7)

1. A perforated heat and mass exchanger characterized by: the perforated heat and mass exchanger consists of a right-angle trapezoidal cavity and a perforated flat plate, wherein the left side surface and the right side surface of the right-angle trapezoidal cavity are parallel, the upper side surface is vertical, the lower side surface is inclined, the left side surface of the right-angle trapezoidal cavity is divided into an upper part and a lower part, the upper part is big and small, the upper part is open, the lower part is open at the left end of a back plate of the right-angle trapezoidal cavity, the rightmost end of a bottom plate below the right-angle trapezoidal cavity is open, the front panel of the right-angle trapezoidal cavity is grooved, the left end of the groove is positioned at the upper-lower boundary of the left side surface, the right end of the groove is positioned at the left end of the opening of the bottom plate, the perforated flat plate is arranged in the trapezoidal cavity to divide the trapezoidal cavity into an upper part and a lower part, the perforated flat plate is provided with a uniform perforated hole, the lower wall of the perforated flat plate is laid with a water-absorbing porous medium thin layer, and the perforated flat plate penetrates through the groove formed in the front panel, then the water storage capillary is penetrated immediately.

2. A perforated heat and mass exchanger according to claim 1 wherein: the perforated heat and mass exchanger is of a flat right-angle trapezoidal cavity structure, openings are formed in the upper portion of the left side face of the cavity, the lower portion of the back face of the cavity and the right portion of the bottom face of the cavity, and a groove is formed in the front panel.

3. A perforated heat and mass exchanger according to claim 1 wherein: the interior of the perforated heat and mass exchanger is divided into an upper channel and a lower channel, the upper channel is of a right-angle trapezoidal structure, and the lower channel is of a triangular wedge-shaped structure and is large at the left side and small at the right side.

4. A perforated heat and mass exchanger according to claim 1 wherein: the inner partition plate of the perforated heat and mass exchanger is a flat plate, the flat plate is perforated, and the right edge of the hole is provided with a baffle turned upwards.

5. A perforated heat and mass exchanger according to claim 1 wherein: a thin porous medium layer is laid below the perforated flat plate in the perforated heat and mass exchanger, and the thin porous medium layer is excellent in water absorption and heat conductivity.

6. A perforated heat and mass exchanger according to claim 1 wherein: the perforated flat plate in the perforated heat and mass exchanger is connected with the water-absorbing porous medium thin layer, is ejected from the slot on the front panel of the perforated heat and mass exchanger, and then is immediately penetrated into the water storage capillary.

7. A perforated heat and mass exchanger according to claim 1 wherein: the left and right side panels and the back panel of the perforated heat and mass exchanger are both provided with extension sections with equal length downwards.

Images