Heat exchange system for changing humidity in air

Abstract

The utility model relates to a heat exchange system for changing humidity in air. The heat exchange system comprises a dehumidifying heat exchanger, a circulating low-temperature refrigerant (liquid or gas or coexistence of the liquid and the gas) and an air conditioning unit. The heat exchanger is provided with one or more sets of heat exchange pipes, and low-temperature refrigerants pass through the heat exchange pipes, flow back to other heat exchangers after absorbing heat and flow back after being frozen. The heat exchanger is composed of a temperature sensor which is in direct contact with a heat exchange contact surface and attached to the end close to a refrigerant conveying inlet. The air conditioning unit is provided with a fan which reacts to the temperature. The temperature sensor attached to the refrigerant inlet end and an electronic circuit form a system for controlling the speed of the fan, and if the temperature of the heat exchange contact face is low, the air speed is increased to prevent frosting / freezing.

Description

Technical Field

[0001] The utility model relates to a heat exchange system for changing the humidity in the air, wherein the ambient humidity is adjusted by temperature so as to influence the ecology and prevent diseases. Background Art

[0002] It is known that indoor heating or cooling can be used to adjust the appropriate growth temperature. Temperature controllers usually measure the temperature of the air with a thermometer or thermostat.

[0003] However, this approach, which only considers the room temperature, will result in high humidity levels in the room. Long-term high humidity levels can lead to the growth of mold.

[0004] Therefore, it is hoped that a physical phenomenon of extracting water vapor from the air to reduce air humidity can be provided to effectively prevent diseases. Utility Model Content

[0005] In the first aspect, the utility model proposes a dehumidification system for changing the humidity in the air, which includes: passing a refrigerant through a heat exchange contact surface; a wind source for flowing air through the heat exchange contact surface; and the air flow rate or flow is controlled to increase the air flow rate or flow if the temperature at the refrigerant inlet is lower than a predetermined temperature.

[0006] The heat exchange contact surface includes heat exchange tubes, coils or panels.

[0007] The wind source includes a fan.

[0008] The wind source includes a ventilation vent; and the change in the size of the vent is used to adjust the flow rate or flow of the air.

[0009] Preferably, the heat exchange tube or heat exchange panel has an inlet for the refrigerant to enter and an outlet for the refrigerant to leave the heat exchange tube. The system also includes: a temperature sensor, the temperature sensor is attached to the inlet of the heat exchange tube pipe conveying the refrigerant or the inlet of the heat exchange panel; the temperature read in this way can prevent the heat exchange tube or heat exchange panel from being overcooled and frosted and then iced, and the heat exchange is weakened by the presence of ice.

[0010] In the second aspect, the refrigerant is circulated due to a pressure difference, which is generated by a circulating pump or a compressor.

[0011] In the third aspect, the equipment for reducing the temperature of the refrigerant includes a compressor or other factors that absorb the heat energy of the refrigerant such as low temperature weather and low temperature water in cold areas.

[0012] On the other hand, the utility model provides a dehumidification system, including a dehumidification heat exchanger, a circulating low-temperature refrigerant (liquid or gaseous or both) and an air conditioning unit. The heat exchanger has one or more heat exchange tubes or heat exchange panels, allowing the low-temperature refrigerant to pass through it, absorbing heat and returning to other heat exchangers, freezing and returning. The heat exchange component has a temperature sensor, which is in direct contact with the heat exchange tube or heat exchange panel and attached to the refrigerant inlet end near the heat exchange tube or heat exchange panel. The air conditioning unit has a fan that responds to temperature. The temperature sensor attached to the refrigerant inlet tube forms a system for controlling the fan speed through an electronic circuit. If the tube temperature is low, the wind speed is increased to prevent frost / ice. In the process, more condensed water will form on the heat exchange tube or heat exchange panel and be discharged. If the temperature read by the temperature sensor is higher than the predetermined temperature, the fan will blow more gently to maintain the dehumidification capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] It will be useful to further describe the present invention with reference to the accompanying drawings which illustrate possible arrangements of the present invention, wherein like numbers represent like parts. Other arrangements and arrangements of the present invention are possible, and therefore the particularity of the accompanying drawings should not be understood as superseding the generality of the preceding description of the present invention.

[0014] Figure 1 An embodiment is shown for use in a house where low humidity is present;

[0015] Figure 2 yes Figure 1 A schematic diagram of a heat exchange tube in a dehumidification device of an embodiment. and

[0016] Figure 3 illustrate Figure 2 Variants of different arrangements of heat exchange tubes are shown in . DETAILED DESCRIPTION

[0017] Figure 1 Schematic diagram of a dehumidification system. Inside the room 101 is a heat exchanger 107. Outside the room is a compressor 105 and a heat exchanger 107. The refrigerant is pumped through a pipe system 111 that connects the entire refrigeration system in an endless cycle.

[0018] When the refrigerant flows into the heat exchanger, the refrigerant enters the heat exchange tube for heat exchange. The fan 109 draws air from the ambient air in the room and blows the air through the heat exchange tube. The refrigerant inside the heat exchange tube reduces the heat in the air blowing through the heat exchange tube. The temperature drop causes the water vapor in the air to saturate and condense into water. The air with low water vapor content leaves the heat exchanger and flows back into the room. In this way, dehumidification is performed.

[0019] When the refrigerant absorbs heat from the air, the refrigerant absorbs the heat in the form of liquid and gas in the tube. Therefore, the refrigerant exchanges heat in the form of liquid and gas in the heat exchanger.

[0020] The refrigerant leaves the contact surface of the heat exchange tube in the heat exchanger, moves in the pipeline and reaches the compressor outside at the same time. In the compressor, the gaseous refrigerant is pressurized into high-pressure gas. In this process, the heat energy in the refrigerant changes in the form of reducing the volume to increase the pressure. The pressurized high-temperature refrigerant enters the heat exchanger unit, and the heat is dissipated to the surrounding environment in the form of temperature difference. The cooled refrigerant is partially turned into liquid after decompression, or low-temperature gas flows to the heat exchange tube.

[0021] The heat exchange tube contact surface shape 201 in the heat exchanger includes: Figure 2 The curved configuration shown. The heat exchange tube extends in one direction and then in the opposite direction. This is repeated several times to provide more area for heat exchange.

[0022] The refrigerant enters the heat exchanger at the input end 205 and leaves at the other end, the output end 203. After entering the heat exchanger, as the refrigerant flows through the output end of the heat exchanger, heat exchange occurs due to the difference in temperature between the refrigerant and the air. As shown in the diagram below the heat exchange tube in the figure, a temperature gradient is formed at different locations on the tube. As shown in the figure, the refrigerant at the input end of the heat exchanger is the coldest, and the refrigerant at the output end of the heat exchanger is the hottest.

[0023] In existing products, only the air temperature before entering the heat exchanger and any position of the heat exchange tube are measured, rather than the temperature at the inlet of the heat exchange tube, and water cannot be pumped away efficiently.

[0024] The speed of the fan 109 in the heat exchanger responds to the temperature sensor, and the speed is controlled by a system consisting of a temperature sensor 207 and an electronic circuit.

[0025] If the inlet temperature of the heat exchange tube is lower than the preset temperature (threshold) of the circuit system, the fan will increase the wind speed in response to the low temperature to increase heat exchange without causing frost.

[0026] However, the heat exchange tube inlet temperature is higher than the preset temperature of the circuit system, and the fan is slowed down to reduce heat exchange to improve the dehumidification effect.

[0027] This allows the compressor to run continuously while the fan speed varies to adjust the heat exchange rate. In this case, the compressor will not start and stop intermittently in response to temperature fluctuations in the room, causing rehumidification.

[0028] Humidity plays an important role in how people feel warm or cold. Generally speaking, people are more likely to get sick, such as heat stroke, in warm and humid environments. One advantage of this embodiment is that the ambient humidity can be better controlled compared to the air conditioners of the prior art. This is because the heat exchange airflow is changed to achieve the best dehumidification effect at a specific energy consumption. When the temperature of the heat exchange tube is lower than the preset temperature and more air is blown through the heat exchange tube, more moisture will condense on the heat exchange tube. The condensed water 209 is simply discharged from the air conditioning unit. In this way, in a drier high temperature, people can effectively evaporate sweat and feel more comfortable.

[0029] On the other hand, if the temperature of the heat exchange tube is higher than the preset temperature, the fan speed is reduced. Therefore, when the temperature of the heat exchange tube is reduced, moisture is still removed at a temperature difference that generates saturated water vapor.

[0030] For example, in offices, stations, residences, and airports, low humidity effectively slows down and stops some physical and chemical reactions. Chemical reactions are restricted by the concentration of water, and physical reactions are restricted by the transpiration of water, so the pathology of the disease is effectively controlled.

[0031] The hottest refrigerant connects to the hottest input air at the output end, and the coldest refrigerant connects to the cooled input air at the input end of the heat exchange tube, and dehumidification can be achieved throughout the process.

[0032] The direction of the airflow should be arranged to produce a temperature gradient. For example, the refrigerant inlet is near the heat exchange tube near the airflow outlet. This can protect the heat exchange tube from frost. Therefore, the temperature sensor must be attached to the input end of the heat exchange tube, which is also the lowest temperature end of the heat exchange tube. At the same time, the fan speed is controlled by the electronic circuit to keep the heat exchange tube working at a low temperature without frost.

[0033] In other embodiments, the fan may be replaced with an adjustable tuyere that directs the natural gas stream toward the heat exchange tubes.

[0034] Figure 3 Shows another implementation. Figure 2 The difference includes the use of fans to extract air and direct the air flow. Figure 3 The heat exchange tube or coil is first twisted and extended in one direction, and then twisted and extended in the opposite direction.

[0035] Although the use of the present invention has been described in the foregoing description, it will be understood by those skilled in the art that many changes or modifications may be made to the details of design, construction or operation without departing from the scope of the present invention. The present invention is as claimed.

Claims

1. A heat exchange system for changing the humidity in air, wherein: It includes: Passing a refrigerant through the heat exchange contact surface; A wind source for flowing air over the heat exchange contact surface; The air flow rate or volume is controlled so that if the temperature at the refrigerant inlet is below a predetermined temperature, the air flow rate or volume is increased.

2. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: The heat exchange contact surface is the heat exchange tube.

3. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: The heat exchange contact surface is the heat exchange panel.

4. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: The wind source is a fan.

5. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: The wind source is a ventilation vent; and the change in the size of the vent is used to adjust the air flow rate or flow.

6. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: The heat exchange contact surface has an inlet for the refrigerant to enter and an outlet for the refrigerant to leave the heat exchange contact surface; The heat exchange system also includes: a temperature sensor attached to the inlet side of the refrigerant to prevent the contact surface from being overcooled and condensing water.

7. A heat exchange system for changing the humidity in air as claimed in claim 2, wherein: The heat exchange tube has an inlet for the refrigerant to enter and an outlet for the refrigerant to leave the heat exchange tube; The heat exchange system also includes: The temperature sensor is attached to the entrance of the pipe that transports the refrigerant to prevent the pipe from being overcooled and condensing water.

8. A heat exchange system for changing the humidity in air as claimed in claim 3, wherein: The heat exchange panel has an inlet for the refrigerant to enter and an outlet for the refrigerant to leave the heat exchange panel; The heat exchange system also includes: The temperature sensor is attached to the inlet of the panel that transmits the refrigerant to prevent the tube panel from being overcooled and condensing water.

9. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: The refrigerant circulates due to the pressure difference, which is created by a circulating pump or compressor.

10. A heat exchange system for changing the humidity in air as claimed in claim 1, wherein: Equipment that reduces the temperature of the refrigerant includes a compressor.

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