WO2013177970A1

WO2013177970A1 - Gas condensation and heat regeneration device

Info

Publication number: WO2013177970A1
Application number: PCT/CN2013/073101
Authority: WO
Inventors: 李贤锡
Original assignee: Li Xianxi
Priority date: 2012-05-29
Filing date: 2013-03-24
Publication date: 2013-12-05
Also published as: CN202569634U

Abstract

A gas condensation and heat regeneration device comprises a heat exchanger (1), an air inlet cover (2), an air outlet cover (3) and a cold air reentry cavity (4). The heat exchanger (1) comprises air inlet passages (5), air return passages (6), a heat conduction pipe (7) and a radiation fin (8). The air inlet passages (5) and the air return passages (6) are both great in number, and each of the air inlet passages (5) and each of the air return passages (6) are adjacently arranged; an air inlet (11) is arranged above each of the air inlet passages (5), and all the air inlets (11) are in communication with a total air inlet (12) through the air inlet cover(2); an air outlet (13) is arranged above each of the air return passages (6), and all the air outlets (13) are in communication with a total air outlet (14) through the air outlet cover (3); and the cold air reentry cavity (4) communicates beneath the air inlet passages (5) and the air return passages (6).

Description

Gas condensation and regenerators

The invention relates to a gas condensation and heat recovery device, in particular to a method for condensing and separating vapor in a gas, comprising collecting moisture or organic solvent in the gas, and performing temperature recovery on the cooled gas. The device belongs to the fields of vapor condensation, heat exchange and energy saving technology.

Background technique:

The dehumidification method of the existing condensing dehumidifier is to let the humid air first flow through the evaporator of the refrigeration system, and when the air flows through the cold surface of the evaporator, the supersaturated water vapor precipitates the liquid water to realize dehumidification, dehumidifying and cooling the air. The condenser is then passed through a condenser of the refrigeration system for heating to achieve temperature recovery of the dehumidified air. This type of dehumidifier has the following disadvantages. When the outside air is higher than 40 °C, the condenser can not adapt to the high temperature working environment, which affects the refrigeration of the evaporator, thereby reducing the dehumidification effect of the dehumidifier or causing inoperability, and the air is dehumidifying. The cooling and heating of the process, the cold and heat load is carried out by the operation of the refrigeration compressor, resulting in a large energy consumption.

Some condensing dehumidifiers can reduce the heat and cold load of the refrigeration compressor by increasing the heat exchange device before and after the dehumidification, but the volume is large and the structure is complicated, and the heat exchange efficiency is low, and the energy saving effect is not satisfactory. .

Summary of the invention:

The technical problem solved by the invention is to provide a gas condensation and heat recovery device integrated with condensation and heat exchange, which has high heat exchange efficiency and can reduce gas during condensation process. The heat and cold load required for the thermal change is realized to achieve energy saving, and the condensation can be achieved by a single air cooler and the temperature of the cooled gas can be recovered.

The invention can adopt the following technical solutions:

A gas condensation and regenerative device, comprising: a heat exchanger and a cold air folding chamber; the heat exchanger comprises an air inlet passage, a return air passage, a heat pipe, a heat sink, and the air inlet passage and the air return passage For a plurality of, each of the intake passages is adjacent to the return air passage, the intake passage is located between the adjacent two return air passages, or the return air passage is located between the adjacent two intake passages, adjacent The channel wall between the air inlet channel and the air return channel is integrally formed, the channel wall is the heat sink, the heat pipe extends from low to high, and the horizontal pipe segments of the heat pipe are respectively disposed through the heat dissipation. The heat pipe has an inlet and an outlet; each of the inlet channels is provided with an inlet port, and all the inlet ports are connected to a total inlet port, and each of the return channels is provided with an outlet port above, and all the outlet ports are connected The air inlet channel is connected to the bottom of the air inlet channel and the bottom of the air return channel is provided with a liquid storage groove, and the bottom of the liquid storage tank is provided with a liquid discharge control outlet.

The present invention can further take the following improvement measures:

All air inlets are connected to a total air inlet through the air inlet hood, and all air outlets are connected to a total air outlet through the air hood.

The total air inlet is provided on the top or upper side of the heat exchanger; the total air outlet is provided on the top or upper side of the heat exchanger.

The inlet passage and the return passage are respectively provided with an inlet port and an outlet port on both sides of the top or the upper side of the heat exchanger;

The inlet passage and the return passage are divided on both sides of the bottom or bottom of the heat exchanger Do not have air outlets and air inlets;

The air outlet below the air inlet passage and the air inlet below the air return passage communicate with the inner space of the liquid storage tank;

The air inlet cover and the air outlet cover are disposed on the top of the heat exchanger or on both sides of the heat exchanger, and the total air inlet is disposed on the top or side of the air inlet cover; the total air outlet is disposed on the top or side of the air outlet cover.

The fin surface is uneven.

The heat sink is an aluminum heat sink, and the heat sinks are vertically arranged.

The heat pipe is a copper pipe.

The heat pipe and the heat sink are tightly fitted and sealed at the border.

The heat pipe is composed of a plurality of parallel copper pipes, and each group of copper pipes is extended from low to high and then folded back near the original road, and each group of copper pipes is parallel to each other in a vertical plane.

The return air passage is closed near the air inlet, and all of the air intake passages are closed near the air outlet.

The device has a heat insulating layer on its outer surface.

When the air inlet or the air outlet is disposed at the top of the heat sink, the three air inlet structures of the air inlet or the air inlet between the two sides of the air inlet may be formed, and the number and position of the air inlet or the air outlet cover are The position of the air port or the air outlet is matched.

The heat pipe is a metal pipe, and the heat sink is a metal piece.

The heat pipe extends from low to high and then folds back to the original road.

The above technical solution has such technical effects: The flow of the heat-conducting medium, and the thermal conductivity of the heat-conducting tube and the heat sink itself can quickly and efficiently realize the heat exchange between the inlet and outlet air, reduce the consumption of the heat of the heat-conducting medium during the condensation process, and make the device more energy-saving. Moreover, the efficient heat exchange performance can reduce the volume of the heat exchanger, and also increase the return air temperature, and the utilization of waste heat is higher.

2. The heat transfer tube twists and turns, which lengthens the heat exchange path of the air. The air intake channel implements the air pre-cooling link. Compared with the conventional dehumidifier, the cold surface and the air after the wind can be cooled at the same temperature of the surface cooler. The temperature difference is less, the vapor gets a lower condensation temperature, and the dehumidification effect is better.

3. The horizontal heat transfer medium in the horizontal direction of the heat pipe is used to keep the temperature of the horizontal layer of the combined heat exchanger consistent. Compared with the conventional gas-gas heat exchanger, the heat formed by the geometric path of the incoming and outgoing air flows cannot be completely overlapped. The problem of low heat exchange efficiency caused by the exchange of blind spots.

4. It can be applied to steam condensation with a larger inlet temperature range, including dehumidification for high temperature and high humidity air above 80 °C.

5. The air enters through the narrow and humid air intake passage, which can absorb the dust in the air and discharge it with the condensed water. The air after dehumidification is more clean.

6. The integrated design is more concise, reducing the size and manufacturing cost of the device.

BRIEF DESCRIPTION OF THE DRAWINGS:

1 and 3 are schematic structural views of different visual directions of the device of the present invention.

Figure 2 is a side elevational view of the apparatus of the present invention.

Figure 4 is a schematic view showing another structure of the apparatus of the present invention.

Figure 5 is a side elevational view of another configuration of the apparatus of the present invention. Figure 6 is a schematic view showing the structure of the air outlet and the air inlet of the device of the present invention.

7 and 8 are structural schematic views of different visual directions of Embodiment 4 of the apparatus of the present invention. Figure 9 is a schematic view showing the structure of the A-A direction of Figure 8.

Figure 10 is a schematic side view of Embodiment 4.

Figure 11 is a schematic view showing the structure of Embodiment 5 of the apparatus of the present invention.

Figure 12 is a schematic view showing the structure of the B-B direction of Figure 11;

Figure 13 is a schematic side view of Embodiment 5.

Figure 14 is a schematic view of a heat transfer pipe of Embodiment 3. detailed description:

The present invention will be specifically described below in conjunction with specific embodiments:

Embodiment 1 : As shown in FIG. 1 , FIG. 2 and FIG. 3 , a gas condensation and heat recovery device includes a heat exchanger 1 , an air inlet cover 2 , an air outlet cover 3 , and a cold air folding chamber 4 ; The air passage 5, the return air passage 6, the heat transfer tube 7, the heat sink 8, the intake passage 5 and the return air passage 6 are each a plurality, and each of the intake passages 5 and the return air passage 6 are disposed adjacent to each other, and the intake passage 5 is located between two adjacent return air passages 6, or the return air passage 6 is located between two adjacent intake passages 5, and the passage wall between the adjacent intake passage 5 and the return air passage 6 is integrated Forming, the channel wall is a heat sink 8. The heat pipe 7 is extended from a low to a high back and then folded back near the original path. The horizontal pipe sections of the heat pipe are horizontally passed through the heat sinks 8, and the heat pipe is provided with an inlet 9 And an outlet 10; each of the intake passages 5 is provided with an air inlet 11 above, and all the air inlets 11 are communicated through the air inlet cover 2 to a total air inlet 12, and each of the air return passages 6 is provided with an air outlet 13 above it. , all air outlets pass The air outlet hood 3 is connected to a total air outlet 14 , and all of the air inlet passages 5 have an air inlet 11 communicating with the inside of the air inlet hood 2 , and all the air return passages 6 are closed between the air inlet hood 2 and all the air return passages 6 The air outlet 13 communicates with the inside of the air outlet hood 3, and all the air inlet passages 5 and the air outlet hood 3 are closed; the air inlet passage 5 communicates with the air return passage 6 below the cold air folding chamber 4, and the cold air folding chamber is provided at the bottom. The liquid storage tank 15 is provided with a liquid discharge control outlet 16 at the bottom of the liquid storage tank 15.

The heat pipe 7 is a copper pipe.

The heat sink 8 is an aluminum heat sink, and the heat sinks are vertically arranged.

The heat pipe 7 and the heat sink 8 are tightly fitted and sealed at the junction.

All the fins 8 of the return air passage 6 near the end of the air inlet 11 are interlocked and closed, so that the air return passage 6 and the air inlet cover 2 are not in communication; all the air inlet passages 5 are close to the heat sink 8 on both sides of the air outlet 13 The interlocking is closed, so that the air inlet passage 5 and the air outlet hood 3 are not in communication.

The air inlet cover 2 and the air outlet cover 3 are respectively disposed at the uppermost positions of the two vertical sides of the device, and the total air inlet 12 is disposed at the top of the air inlet cover 2 (as shown in FIG. 1 ) and the total air outlet 14 is provided. At the top of the hood 3 .

The gas condensation and regenerator means, except for all the inlet and outlet, the outside is sealed by a steel plate or an aluminum plate, and the outer surface thereof is provided with a heat insulating layer.

Embodiment 2: As shown in FIG. 4, FIG. 5 and FIG. 6, the air inlet cover 2 and the air outlet cover 3 may be disposed at the top of the heat sink 8, and the total air inlet 12 is disposed in the air inlet cover. 2 The side surface (Fig. 4) and the total air outlet 14 are provided on the side surface of the air outlet cover 3.

In addition, the heat pipe 7 can be composed of a plurality of parallel copper pipes, each group of copper pipes extending from low to high and then returning to the original road, and each group of copper pipes is in a vertical plane. Inside are parallel to each other.

working principle:

The low-temperature heat-conducting medium is injected from the copper tube inlet of the heat exchanger, and the heat-conducting medium first reaches the upper position from the bottom to the top, and then turns back from the top to the bottom and flows out from the outlet. The high-temperature gas enters the air inlet hood from the total air inlet and enters through the air inlet above each air intake passage. It flows from the top to the bottom through the aluminum heat sink and the copper tube. After reaching the cold air folding chamber, it is folded back into the return air passage. Down to the top through the aluminum heat sink and copper tube, the air finally flows out from the air outlet above the air return passage, and flows out through the air hood. Since the flow direction of the high-temperature gas is from top to bottom, heat exchange with the low-temperature heat transfer medium flowing from bottom to top causes the temperature of the heat exchanger to gradually decrease from top to bottom. The temperature above the heat exchanger is close to the temperature of the incoming air, and the lower temperature is close to the temperature at which the low temperature heat transfer medium enters.

The gas passes through the inlet passage from top to bottom and contacts the low temperature aluminum fins and copper tubes. The temperature is gradually reduced. When the temperature is lower than the dew point of organic gas or water vapor, the organic gases and moisture in the air are condensed. The effect will become liquid or solid, and the solid matter will adhere to the aluminum heat sink and copper tube, and the liquid material will flow into the liquid storage tank at the bottom of the cold air retraction chamber. The air entering the cold air reentrant chamber has completed the cooling process, and the low temperature condensation causes most of the organic gas and water to be separated from the air.

The low temperature air is folded back from the cold air returning chamber into the return air passages from bottom to top. Since the temperature distribution of the heat exchanger is gradually increased from bottom to top, the air will absorb heat when flowing upward from below the return air passage, and when reaching the upper outlet, The temperature of the air will approach the temperature before it enters the heat exchanger.

Since the air in the intake passage and the air in the return passage are separated by the aluminum fins and have The copper pipes are connected, the air heat on both sides is easily exchanged, and the heat transfer medium in the heat conduction copper pipe running through the intake passage and the return air passage flows toward the horizontal direction to transfer and exchange heat of the same level. The temperature of the inlet and outlet air at the same level of the heat exchanger can be made close to the same. Since the temperature distribution of the entire heat exchanger is high and low, the lateral balance, the temperature of the air entering and the final outflow does not change much, and after the condensation process, little heat is lost, and the residual heat of the air can be reused. Similarly, the heat-conducting medium in the heat-conducting copper tube absorbs heat when flowing upward, re-absorbs the cooling amount when flowing downward, and causes little change in temperature when flowing in and out, and the gas condensing consumes little cold. , greatly reducing the energy consumption required for circulating refrigeration of low temperature heat transfer medium.

The reason for the energy saving of the device is that the low-temperature heat-conducting medium in the heat exchanger copper tube forms a two-way heat exchange process that absorbs heat when flowing upward, and releases heat when flowing downwards. The incoming hot air becomes cold, and most of the cooling capacity is indirect. It is sucked from the cold air that is folded back and condensed, and the air that is turned back after cooling becomes hot. The heat is indirectly absorbed from the incoming hot air, and the heat exchange (or cold exchange) between the air is mainly based on copper. The heat transfer medium in the tube is rapidly convectively absorbing heat and heat and is conducted through both sides of the copper tube and the heat sink.

The heat exchanger of the device may be an evaporator in a refrigeration system or a heat pump system. The low-temperature heat-conducting medium circulating in the heat-conducting tube of the heat exchanger may be a circulating refrigerant or a circulating refrigerant which is directly provided by the refrigeration compressor or the heat pump compressor, and the effect is similar.

Embodiment 3: As shown in Fig. 14, the heat transfer pipe 7 extends from the low to the high back, which is different from the first two embodiments in that it is not folded back close to the original road. The horizontal pipe section of each horizontal pipe of the heat pipe is respectively passed through each of the heat conducting sheets, and the heat pipe is respectively provided with Port 10 and exit 9.

Embodiment 4: As shown in Fig. 7, Fig. 8, Fig. 9, and Fig. 10, this example is characterized in that all the air inlets are directly connected to one total air inlet 12, and all the air outlets are directly connected to one total air outlet 14. The total air inlet and the total air outlet are respectively disposed on the upper side (two sides) of the heat exchanger. All the fins 8 of the return air passage 6 near the end of the air inlet 11 are interlocked with each other or sealed by the blockage 101, so that the return air passage 6 and the total air inlet 12 are not in communication; all the air inlet passages 5 are close to the air outlet 13 The fins 8 on both sides of the end are interlocked with each other or sealed by the plug 100 so that the air inlet passage 5 and the total air outlet 14 are not in communication.

Embodiment 5: As shown in Fig. 1, 1 and 12, the present embodiment is characterized in that all the air inlets are directly connected to a total air inlet 12, and all the air outlets are directly connected to a total air outlet 14. The total air inlet and the total air outlet are located at the top of the heat exchanger. All the fins 8 of the return air passage 6 near the end of the air inlet 11 are interlocked with each other or sealed by the blockage 101, so that the air return passage 6 and the total air inlet 12 are not in communication; all the air inlet passages 5 are close to the air outlet 13 The fins 8 on both sides of the end are interlocked with each other or sealed by the plug 100 so that the air inlet passage 5 and the total air outlet 14 are not in communication. Application test example 1:

The device of the invention is applied to the fresh air dehumidification of the central air conditioning system, and realizes the independent adjustment function of the temperature and humidity of the air.

The fresh air dehumidification air cabinet includes: a gas condensation and regenerator, a fan, a wind turbine casing, the air inlet of the wind cabinet is connected with the internal gas condensation and the total air inlet of the heat recovery device, and sucks the outdoor fresh air, and the fan air inlet inside the wind cabinet It is connected with the total air outlet of the gas condensation and regenerator, and the air outlet of the fan and the air outlet of the wind cabinet Connected, the dehumidified air enters the room, and the drain pipe of the water storage chamber extends below the outside of the windshield casing.

The above design can independently dehumidify the fresh air entering the air conditioning circulation system, and is equipped with an air conditioning system to achieve independent control of temperature and humidity.

Application test example 2:

Referring to the structural design of the application test example 1, the device of the invention is applied to the dehumidification of a high-temperature drying room to realize the independent adjustment function of the temperature and humidity of the high-temperature air, and is used for dehumidifying and drying the material.

The dehumidification air cabinet includes: a gas condensation and regenerator, a fan, a wind turbine casing, and an air inlet of the wind cabinet communicates with the internal gas condensation and the total air inlet of the heat recovery device, and sucks the high temperature and high humidity air of the drying room, and the interior of the wind cabinet The air inlet of the fan is connected with the total air outlet of the gas condensation and heat recovery device, and the air outlet of the fan is connected with the air outlet of the wind cabinet, and the air after the dehumidification and the temperature recovery is sent back to the drying room, and the air in the drying room is only added. Very little heat can satisfy the temperature required for drying.

The above design can dehumidify the fully sealed high temperature drying room, including

Independent humidity control in high temperature environments above 80 °C.

Application test example three:

Referring to the structural design of the application test example 1, the apparatus of the present invention is applied to an air water machine to achieve efficient and energy-saving collection of condensed water from the air.

The air water machine includes: a gas condensation and heat recovery device, a fan, a water machine casing; an air inlet of the water machine casing and a gas condensation and heat recovery device inside thereof The total air inlet is connected to the outside air, and the air inlet of the fan inside the water machine is connected with the total air outlet of the gas condensation and heat recovery device. The air outlet of the fan communicates with the air outlet of the water machine, and the air after dehumidification is discharged to the outside. The drain pipe of the water storage chamber is connected to the filter of the water machine to collect the condensed water. Since the sensible heat change of the air does not need to consume energy during the process of collecting moisture, the temperature of the discharged air is basically the same as the temperature at the time of entering, and the air is not taken away when the air is discharged, and the amount of cold consumed is only for absorption. The latent heat released by condensation of water vapor is quite energy efficient.

Application test example four:

Referring to the structural design of the application test examples one and two, the device of the invention is applied in an organic solvent condensation recovery system, and the organic gas in the air is recovered in the metal tube of the heat exchanger of the device of the invention, and the ultra-low temperature heat conduction medium is cyclically injected, so that The dew point temperature below the heat exchanger is reduced to -20 °C to -50 °C, which can condense low dew point organic gases such as benzenes, ketones, lipids, alcohols, and gasoline, and can precipitate organic solvents and recycle them. Because of the high heat exchange efficiency between the hot and cold gases in the device of the invention, before the organic gas enters the condensation section, most of the heat of the organic gas has been absorbed by the cooled low-temperature air, which greatly reduces the consumption of the condensation process. The cooling capacity solves the problem that traditional ultra-low temperature condensation requires a lot of energy.

The device is prone to internal frosting during the ultra-low temperature condensation process, and the defrosting can be easily performed by intermittently starting the device or injecting a relatively high temperature heat transfer medium into the heat pipe of the heat exchanger. The above four application test examples have very obvious energy-saving effects. On the one hand, the heat exchanger only absorbs the latent heat released by the vapor into a liquid state during the steam condensation process, and the sensible heat change of the air consumes very little cooling capacity. The temperature recovery through the cooled air is derived from the internal absorption of the heat exchanger and does not require recovery of the temperature by an external heat source.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A gas condensation and heat recovery device, characterized by: including a heat exchanger and a cold air return chamber; the heat exchanger includes an air inlet channel, a return air channel, a heat pipe, and a heat sink, and the air inlet channel, return air There are multiple channels, and each air inlet channel is adjacent to a return air channel. The air inlet channel is located between two adjacent return air channels, or the return air channel is located between two adjacent air inlet channels. The channel wall between the adjacent air inlet channel and the return air channel is integrally formed. The channel wall is the heat sink. The heat conduction pipe extends upward in a circuitous way from low to high, and each horizontal pipe section of the heat conduction pipe passes through it respectively. Each heat sink and heat pipe is provided with an inlet and an outlet; each air inlet channel is provided with an air inlet above it, and all air inlets are connected to a general air inlet; each return air channel is provided with an air outlet above it, and all outlets are The air port is connected to a general air outlet; the lower part of the air inlet channel and the lower part of the return air channel are connected to the cold air return chamber. There is a liquid storage tank at the bottom of the cold air return cavity, and a liquid drainage control outlet is provided at the bottom of the liquid storage tank.

2. The gas condensation and heat recovery device according to claim 1, characterized in that: all air inlets are connected to a general air inlet through the air inlet hood, and all air outlets are connected to a general air outlet through the air outlet hood.

3. The gas condensation and heat recovery device according to claim 1, characterized in that: the main air inlet is located on the top or upper side of the heat exchanger; the general air outlet is located on the heat exchanger. The top or upper side of the heat exchanger.

4. The gas condensation and heat recovery device according to claim 1, characterized in that: the heat sink is an aluminum heat sink, and each heat sink is arranged vertically.

5. The gas condensation and heat recovery device according to claim 1, characterized by: The heat pipe is a copper pipe.

6. The gas condensation and heat recovery device according to claim 1, characterized in that: the junction between the heat pipe and the heat sink is tightly fitted and sealed.

7. The gas condensation and heat recovery device according to claim 1, characterized in that: the heat transfer tube is composed of multiple groups of parallel copper tubes, and each group of copper tubes extends upward from low to high in a circuitous way and then turns back close to the original path. Each set of copper tubes is parallel to each other in a vertical plane.

8. The gas condensation and reheat device according to claim 1, characterized in that: the part of the return air channel close to the air inlet is closed, and the part of all the air inlet channels close to the air outlet is closed.

9. The gas condensation and heat recovery device according to claim 1, characterized in that: the outer surface of the device is provided with a heat insulation layer.

10. The gas condensation and heat recovery device according to claim 1, characterized in that: the heat transfer pipe extends upward in a roundabout way from low to high and then turns back close to the original path.