TWI553279B - Cycle dehumidification device - Google Patents

Description

Circulating power dehumidification device

The invention relates to a dehumidifier, and more particularly to an electrolyzed water produced by an electroosmotic dehumidification technology, which is used as an electrolyte for power generation of a metal fuel cell, and has the functions of dehumidification and cycle power generation. The cycle power generation dehumidification device.

According to Taiwan, Taiwan is an island-type climate. The relative humidity of each region is as high as 80% per year. This humid environment causes dust mites and molds to breed, causing many people to have allergies, which seriously affects daily routine and physical health! Therefore, dehumidifiers are available in many homes.

Conventionally, the operation mode of the dehumidifier generally uses a fan to draw humid air into the machine, and the water molecules in the air are condensed into water droplets through a heat exchanger, and the original humid air is turned into hot air. In order to achieve the function of dehumidifying indoor air. However, the dehumidifier will generate noise when it is running, and it must continue to supply electricity to operate and consume electricity. For the modernity of green energy and environmental protection, it is really not in line with the needs of environmental protection, so there is room for improvement.

Recently, so-called electro-osmosis dehumidifiers have been developed, the main It is necessary to use water electrolysis and electroosmotic reaction to produce dehumidification effect. There is no noise generated by the operation of the conventional dehumidifier. However, in order to make the water electrolysis and electroosmotic reaction mechanism sustainable, it is necessary to continue to supply electricity to maintain its operation. Therefore, the energy saving effect still needs to be improved.

The main object of the present invention is to provide a cycle power generation dehumidification device capable of solving the above-mentioned problems, which only needs to start the process of inputting a voltage to drive the dehumidification unit, and then can perform the process of dehumidification and power generation, without the need of conventional knowledge. The operation of the dehumidifier needs to rely on external power, which is environmentally friendly, energy-saving and carbon-reducing, and meets the needs of modern green energy and environmental protection.

In order to achieve the foregoing object, the present invention provides a cycle power dehumidification apparatus comprising a dehumidifying unit comprising two porous electrodes and a cation exchange film disposed between the two porous electrodes for When a voltage is applied to the porous two electrodes, a water electrolysis reaction and an electroosmotic effect can be generated, and the moisture in the air on the anode side of the cation exchange membrane can be taken to the cathode side to be discharged, and an isothermal dehumidification effect is generated, and the generated water system is alkali. a power generation unit, connected to the dehumidification unit, comprising a metal anode, immersed in the alkaline water generated by the dehumidification unit for generating an electrolytic reaction and generating electric power; a control unit electrically connecting the power generation unit with the second A porous electrode for rotating the power generated by the power generating unit to drive the two porous electrodes.

Further, the two porous electrodes respectively comprise a metal mesh, a diffusion layer and a catalytic layer, which are disposed on two sides of the metal mesh, and the diffusion layer is In contact with air, the catalytic layer is in contact with the cation exchange membrane.

Further, the gas diffusion cathode comprises a metal mesh, a diffusion layer and a catalytic layer disposed on two sides of the metal mesh, the diffusion layer being in contact with air, the catalytic layer being in contact with the alkaline water generated by the dehumidification unit.

Further, the diffusion layer is composed of a carbon paper or a carbon fiber cloth having good hydrophobicity, and the catalyst layer is composed of 10% nanoplatinum, glass fiber and graphite supported on nano carbon powder.

Further, the metal anode is composed of an AZ91 magnesium alloy material.

Further, the cation exchange membrane is made of nano zinc oxide and zeolite powder.

Further, the control unit can transmit a DC square wave or a polarized sine wave to drive the two porous electrodes.

Further, the control unit is a control circuit.

10‧‧‧Circular power dehumidification device

12‧‧‧Dehumidification unit

14‧‧‧Power Unit

16‧‧‧Control unit

22, 24‧‧‧ Porous electrodes

26‧‧‧Cation exchange membrane

28(38)‧‧‧Metal net

30(40)‧‧‧Diffusion layer

32(42)‧‧‧ Catalytic layer

34‧‧‧Metal anode

36‧‧‧ gas diffusion cathode

The first figure is a system diagram of a preferred embodiment of the present invention.

The second figure is a schematic diagram of the construction and operation of a dehumidifying unit in a preferred embodiment of the present invention.

The third figure is a schematic view showing the constitution of a porous electrode and a metal anode in a preferred embodiment of the present invention.

In the following, a preferred embodiment of the present invention will be further described in conjunction with the drawings. As shown in the first to third embodiments, a cycle power generation dehumidification apparatus 10 according to a preferred embodiment of the present invention is provided. It mainly includes a dehumidification unit 12, a power generation unit 14, and a control unit 16.

The dehumidifying unit 12 has a configuration similar to that of the conventional electro-osmotic dehumidifying device, and can generate a water electrolysis (redox) reaction and an electro-osmotic flow effect, and the two porous electrodes 22 and 24 are provided. It is composed of a cation exchange film 26 between the two electrodes 22 and 24. The two porous electrodes 22 and 24 respectively include a metal mesh 28, a diffusion layer 30 and a catalytic layer 32 disposed on two sides of the metal mesh 28, and the diffusion layer 30 is in contact with air, and a carbon having good hydrophobicity is used. It is composed of paper or carbon fiber cloth. The catalytic layer 32 is in contact with the cation exchange film 26, and is made of nano carbon powder loaded with 10% nano precious metal platinum (Pt), glass fiber (PTFE) and graphite. Media. The cation exchange membrane 26 is composed of nano zinc oxide (ZnO) and zeolite powder. In the sunlight (especially under ultraviolet irradiation), zinc oxide can be decomposed into free movement and negatively charged in water and air. Electron (e ^- ), while leaving positively charged holes (h ⁺ ), which convert oxygen in the air into active oxygen with strong chemical activity, which can react with various organic substances, and On the one hand, the light absorption capacity of zinc oxide is significantly increased after nanocrystallization, which can greatly increase the sterilization efficiency.

When the dehumidifying unit 12 receives a pulse wave voltage, the electrode 22 on the anode side absorbs water molecules in the air to perform an oxidation reaction, and the generated protons pass through the cation exchange film 26 to generate an electroosmotic effect, which is conducted to the cathode side. The electrode 24 is subjected to a reduction reaction with oxygen and electrons to form water, and the chemical conversion formula of the cathode and the anode is as follows: anodizing reaction: H ₂ O→2H ⁺ +1⁄2O ₂ +2e ^-

Cathodic reduction reaction: 2H ⁺ +1⁄2O ₂ +2e ^- → H ₂ O

In this way, the dehydration and dehumidification of the water in the air on the side of the electrode 22 of the anode is discharged to the electrode 24 side of the cathode, and the electrolysis reaction causes the anode to continuously generate a large amount of hydrogen ions in the oxidizing environment to become acidic, and the cathode. In the reduced state, the hydroxide ions are also made alkaline, and the alkaline dehumidifying water can provide the electrolyte required for the reaction of the power generating unit 14.

The power generating unit 14 is configured similarly to a conventional metal air fuel cell, and can generate an electrolytic reaction and generate electric power. The dehumidifying unit 12 is connected to the dehumidifying unit 12 and includes a metal anode 34 and a gas diffusion cathode 36. The metal anode 34 is made of AZ91 magnesium alloy material and is immersed in the alkaline water generated by the dehumidifying unit 12. The gas diffusion cathode 36 is composed of two porous electrodes 22 and 24, and also includes a metal mesh 38 and A diffusion layer 40 and a catalytic layer 42 on one side of the metal mesh 38 are available for gas diffusion and catalysis. The relevant chemical formula is as follows: anode (metal anode 34): Mg(s)→Mg ² +(aq)+2e ^- - 2.37V

Cathode (gas diffusion cathode 36): 2H+(aq)+2e-→H ₂ (g) -0.9V

Mg(s)+2H+(aq)→Mg ² +(aq)+H ₂ (g)-2.37V

The control unit 16 is a control circuit electrically connected to the power generating unit 14 and the two porous electrodes 22 and 24 for using a direct current (DC) square wave or a polarized sine wave for the power generated by the power generating unit 14. The two porous electrodes 22, 24 are transported and driven. Accordingly, the voltage system is stable between 1.4 V and 1.6 V at a current density of 250 mA/cm 2 during a discharge period of 30 hrs in succession.

Therefore, the operation mode, characteristics and efficacy of the cycle power generation dehumidification device 10 of the present invention are as follows: after applying a voltage to the two porous electrodes 22, 24, positively charged ions can be driven to the electrode 24 (negative electrode). , cathode), the negatively charged ions move to the other electrode 22 (positive electrode, anode), resulting in water electrolysis reaction, in addition to the adsorption of harmful elements in the air, the cation free can simultaneously drive the water flow, and achieve dehumidification The effect of the electrolysis reaction is that the electrode 22 is continuously acidic in the oxidizing environment to generate a large amount of hydrogen ions, and the electrode 24 is alkaline dehumidified water due to the continuous generation of the hydroxide ions in the reduced state. That is to say, water molecules in the air undergo electrolysis on the anode side to generate protons, electrons and oxygen (oxidation reaction), and the protons are further transmitted to the cathode side through the cation exchange membrane to react with oxygen in the electrons and air to generate water (reduction reaction). That is, the moisture in the air on the anode side is discharged to the cathode side.

In addition, the porous structure of the cation exchange membrane 26 contains moisture from the air due to the capillary condensation effect and the diffusion effect of water molecules, and the movement of protons in the membrane will drive the flow of these water molecules, and bring the water to the cathode. Side discharge, which is the so-called electro-osmotic effect and then the electro-osmotic flow effect under the action of an electric field.

If the indoor sealed space with a volume of 50 liters is simulated, the dehumidification test is performed by the dehumidifying device 10, and the relative humidity in the closed space can be reduced to 50% or less after 200 minutes at 30 ° C and a relative humidity of 80%. After 200 minutes, The relative humidity can be reduced to less than 10%, the average dehumidification speed is 0.8-0.1kg/m ² hr, the average current density is 3V/25-30Ma/cm ² , and the energy efficiency is about 0.1-0.12kg/kWh, which can be used for dehumidification. The machine saves electricity and has energy-saving effect, and there is no noise generated, which has an advanced effect on environmental protection.

In addition, the alkaline water generated by the dehumidifying unit 12 can be used as an electrolyte of the power generating unit 14, so that the power generating unit 14 can generate an electrolytic reaction to generate electric power, and the electric power is controlled by the control unit 16 as a direct current wave or a partial sine wave. The two porous electrodes 22, 24 are driven, which in turn can be a circulating dehumidification power system.

It can be seen from the above that the circulating power generation dehumidifying apparatus provided by the present invention skillfully utilizes the alkaline water generated by the dehumidifying unit to dehumidify, and the electric power generated by the power generating unit is used as the driving unit for driving the dehumidifying unit. It is only necessary to start the input of a voltage to drive the dehumidification unit to operate, and then the process of dehumidification and power generation can be cycled. It is not necessary to continue to rely on external power as the operation of the dehumidifier, which is environmentally friendly, energy-saving and carbon-reducing. Economic Value Very good.

The above disclosure is only a preferred embodiment of the present invention, and is not intended to limit the scope of the embodiments of the present invention, and equivalent variations of the present invention to those skilled in the art, and Changes known to those skilled in the art should still fall within the scope of the present invention.

10‧‧‧Circular power dehumidification device

12‧‧‧Dehumidification unit

14‧‧‧Power Unit

16‧‧‧Control unit

34‧‧‧Metal anode

36‧‧‧ gas diffusion cathode

Claims (1)

A cycle power dehumidification device comprising: a dehumidifying unit comprising two porous electrodes and a cation exchange film disposed between the two porous electrodes for generating water when a voltage is applied to the porous two electrodes The electrolysis reaction and the electroosmotic effect can further bring the moisture in the air on the anode side of the cation exchange membrane to the cathode side to discharge, and generate an isothermal dehumidification effect, and the generated water system is alkaline as an electrolyte, and the two porosity The electrodes respectively comprise a metal mesh, a diffusion layer and a catalytic layer disposed on two sides of the metal mesh, the diffusion layer is in contact with air, the catalytic layer is in contact with the cation exchange film, and the cation exchange film is oxidized by nanometer. Zinc (ZnO) and zeolite powder (zeolite powder); a power generation unit, a metal air fuel cell, connected to the dehumidification unit, comprising a metal anode and a gas diffusion cathode, the metal anode is immersed in the alkaline formed by the dehumidification unit In the water, for generating an electrolytic reaction and generating electricity, the gas diffusion cathode comprises a metal mesh, a diffusion layer and a catalytic layer, and is disposed on two sides of the metal mesh The diffusion layer is in contact with air, and the catalytic layer is in contact with the alkaline water generated by the dehumidifying unit; and a control unit electrically connecting the power generating unit and the two porous electrodes for generating power of the power generating unit In turn, the two porous electrodes are driven; wherein each of the diffusion layers is made of carbon paper or carbon fiber cloth having good hydrophobicity, and each of the catalytic layers is loaded with 10% nanoplatinum (Pt), Glass fiber (PTFE) and graphite.