Energy-saving dehumidification device capable of accurately controlling temperature and relative humidity

Abstract

An energy-saving dehumidification device capable of accurately controlling temperature and relative humidity belongs to the technical field of air conditioners and comprises a box body, an air inlet, an air supply outlet, a heat pipe heat exchange assembly, a refrigeration heat exchanger and an air feeder. The heat pipe heat exchange assembly is arranged on the inner side of the air inlet and comprises a plurality of U-shaped three-dimensional heat pipes, each U-shaped three-dimensional heat pipe comprises a pre-cooling section, namely an evaporation end, a heat conduction section and a reheating section, namely a condensation end, which are communicated in sequence, the pre-cooling section is arranged on the left side of the U-shaped three-dimensional heat pipe, and the reheating section is arranged on the right side of the U-shaped three-dimensional heat pipe; the heat conduction section is arranged at the bottom of the U-shaped three-dimensional heat pipe and is a connecting section of the pre-cooling section and the reheating section; a concave part is arranged between the pre-cooling section and the reheating section, the refrigeration heat exchanger is arranged in the concave part, one end of the refrigeration heat exchanger is connected with the evaporation end, and the other end of the refrigeration heat exchanger is connected with the condensation end, so that the energy-saving dehumidification heat pipe is formed; the air feeder is arranged on the inner side of the air supply outlet. The energy-saving dehumidification device has the beneficial effects that the temperature and the relative humidity are accurately controlled, and energy-saving dehumidification is realized.

Description

Technical Field

[0001] The utility model discloses an energy-saving dehumidification device, in particular to an energy-saving dehumidification device capable of accurately controlling temperature and relative humidity, and belongs to the technical field of air conditioning. Background Art

[0002] The dehumidification principle of air conditioners is that moisture in the air will condense into water when it is cooled. When the refrigerant in the evaporator of the air conditioner evaporates, it absorbs a lot of heat, which greatly reduces the surface temperature of the evaporator. This causes the water vapor in the indoor air to liquefy into water when it is cooled. The condensed water will flow through the outlet pipe and be discharged outdoors, so that part of the moisture in the room air is removed in this way.

[0003] At present, the dehumidification method adopts full-surface cold dehumidification. The utility model with the authorization announcement number "CN 209341411 U", the application number "2018222228663", and the utility model name "A constant temperature and humidity air conditioning system" discloses a constant temperature and humidity air conditioning system, including a fresh air processing unit, a return air processing unit and a controller. The fresh air processing unit includes an air intake section, a filter section 1, a dehumidification section and a fan section connected in sequence; the return air processing unit includes a mixing section, a filter section 2, a refrigeration section (such as Figure 6 As shown, including evaporator), heating section (such as Figure 6 As shown, it includes a reheat electric heater), a humidification section and an air supply section. Although the utility model can reduce the overall energy consumption of the air conditioning system, the evaporation temperature of the evaporator is high and the dehumidification capacity is small during the dehumidification process of the dehumidification section, and a large amount of refrigeration capacity is used to cool the air; when the temperature is already stable, full cold dehumidification will inevitably require a large amount of reheat electric heating to run in the heating section to stabilize the temperature. Moreover, the use of reheat electric heating consumes a lot of energy.

[0004] The authorization announcement number is "CN 203147926 U", the application number is "2013200849508", and the utility model name is "A high-efficiency energy-saving dehumidification device". A high-efficiency energy-saving dehumidification device with a large dehumidification capacity per unit of electrical energy includes a U-shaped three-dimensional heat pipe heat exchanger, a filter, a compressor, an evaporator, a condenser, an expansion valve, a fan and other components. Through the pre-cooling and reheating of the three-dimensional heat pipe heat exchanger, the dehumidification capacity per unit of electrical energy of the device is increased, which has a certain energy-saving effect; however, since the U-shaped three-dimensional heat pipe itself does not have a heat pump, the effect of increasing temperature and reducing relative humidity is limited. When only cooling is required in advance and there is no additional heat energy, the requirement for precise control of temperature and relative humidity cannot be achieved. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving dehumidification device for accurately controlling temperature and relative humidity in order to address the defect in the prior art of the dehumidification device for the above-mentioned air-conditioning unit that the temperature and relative humidity cannot be accurately controlled without additional heat energy, so as to achieve the purpose of energy-saving dehumidification by accurately controlling temperature and relative humidity without additional heat energy.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an energy-saving dehumidification device for accurately controlling temperature and relative humidity, comprising a box body and an air inlet arranged at the left end of the box body, an air supply outlet arranged at the right end of the box body, a heat pipe heat exchange component arranged in the box body, a refrigeration heat exchanger and a blower; the heat pipe heat exchange component is arranged on the inner side of the air inlet and includes a plurality of U-shaped three-dimensional heat pipes, the U-shaped three-dimensional heat pipe includes a pre-cooling section, i.e., an evaporation end, a heat conduction section and a reheating section, i.e., a condensation end, which are connected in sequence, the pre-cooling section is on the left side of the U-shaped three-dimensional heat pipe, the reheating section is on the right side of the U-shaped three-dimensional heat pipe, the heat conduction section is at the bottom of the U-shaped three-dimensional heat pipe, and the connection section of the pre-cooling section and the reheating section; there is a recessed portion between the pre-cooling section and the reheating section, the refrigeration heat exchanger is arranged in the recessed portion, one end of the refrigeration heat exchanger is connected to the evaporation end, and the other end is connected to the condensation end, thereby forming an energy-saving dehumidification heat pipe; the blower is arranged on the inner side of the air supply outlet;

[0007] The outdoor hot and humid fresh air enters the box from the air inlet, and the evaporation end of the U-shaped three-dimensional heat pipe absorbs heat, which cools and dehumidifies the outdoor hot and humid fresh air. The internal medium of the U-shaped three-dimensional heat pipe vaporizes and absorbs heat, and quickly transfers it to the other end of the tube, that is, the evaporation end; when the evaporation end begins to be heated, the liquid around the tube wall of the U-shaped three-dimensional heat pipe will instantly vaporize and produce steam. At this time, the pressure at the evaporation end of the U-shaped heat pipe will increase, and the steam flow will flow to the condensation end under the traction of pressure; after the steam flow reaches the condensation end, it will condense into liquid, and at the same time release a large amount of heat to heat the outdoor fresh air. Then the internal medium of the U-shaped three-dimensional heat pipe returns to the evaporation end with the help of capillary force and gravity to complete a cycle;

[0008] It also includes a condensation reheat heat exchanger arranged in the box body and in front of the energy-saving dehumidification heat pipe, so that the heat pipe heat exchange assembly, the refrigeration heat exchanger and the condensation reheat heat exchanger form an energy-saving dehumidification heat pipe and a condensation heat recovery heat exchanger structure;

[0009] The precooling section, heat transfer section and reheating section of the U-shaped three-dimensional heat pipe adjust the temperature of the fresh air in turn. The internal medium temperature of the precooling section of the U-shaped three-dimensional heat pipe is lower than the fresh air temperature. The heat is transferred from the precooling section of the heat pipe to the reheating section of the heat pipe. After the fresh air is cooled by the precooling section of the U-shaped three-dimensional heat pipe, it is cooled and dehumidified by the refrigeration heat exchanger, which greatly increases the dehumidification capacity of the surface cooler. The supercooled fresh air passes through the reheating section of the U-shaped three-dimensional heat pipe, and the temperature rises. At this time, the relative humidity of the fresh air decreases, but the heat pipe itself has limited effect on temperature increase and relative humidity reduction because it does not have a heat pump. The fresh air is heated again by condensation reheating heat exchange, and the temperature of the fresh air after refrigeration and dehumidification is compensated, thereby avoiding the phenomenon of condensation and frost on the surface of components that may be produced due to too low temperature, so that the relative humidity of the fresh air is further reduced, and only the cooling needs can be advanced, and the requirements for precise control of temperature and relative humidity can be achieved without additional heat energy; thus, this energy-saving dehumidification heat pipe and condensation heat recovery heat exchanger structure become an energy-saving dehumidification device for precise control of temperature and relative humidity;

[0010] Dehumidification process: humid fresh air enters the dehumidification device through the air inlet, and after being processed by the filter, enters the pre-cooling section of the U-shaped three-dimensional heat pipe, where the refrigerant vaporizes and absorbs heat, causing the humid air to be initially cooled; the cooled air is then cooled and dehumidified by the refrigeration heat exchanger, i.e., the evaporator, to precipitate a large amount of condensed water; the dehumidified low-temperature air passes through the hot reheat section of the U-shaped three-dimensional heat pipe, where the refrigerant liquefies and releases heat, and is initially heated by the heat transferred from the pre-cooling section by the heat conduction section of the three-dimensional heat pipe; the initially heated air is then heated by the condensation reheat exchanger, and becomes fresh air that can accurately control the temperature and relative humidity and is comfortable for people, and is then sent into the room by the blower;

[0011] This energy-saving dehumidification device can not only accurately control the temperature and relative humidity, improve the suitability of the air outlet temperature of the fresh air fan, but also effectively utilize energy and reduce energy consumption; by using a U-shaped three-dimensional heat pipe heat exchanger, the humid and hot fresh air is pre-cooled, dehumidified and reheated, and then heated again by a condensing reheat heat exchanger. On the one hand, at the same unit of electrical energy consumption, the dehumidification capacity is increased by 36% compared with traditional refrigeration and dehumidification units; on the other hand, when the same dehumidification capacity requirements are met, the refrigeration capacity and electrical energy consumption of the device can be reduced, saving 58% of electricity compared with traditional refrigeration and dehumidification units.

[0012] There is one U-shaped three-dimensional heat pipe, the precooling section and the reheating end of the three-dimensional heat pipe are straight pipes, the heat conduction section of the three-dimensional heat pipe is a curved pipe, the heat absorption section and the heat release section are parallel, and the precooling section and the reheating section are both perpendicular to the fresh air direction.

[0013] The U-shaped three-dimensional heat pipe is fixedly connected to the box body.

[0014] It also includes a flow regulating valve, which is arranged on one side of the condensing and reheating heat exchanger and on the condensing and reheating refrigerant passage to effectively control the relative humidity of the fresh air.

[0015] It also includes a drain outlet, which is arranged at the bottom of the box and below the U-shaped three-dimensional heat pipe. After the humid fresh air enters the pre-cooling section of the U-shaped three-dimensional heat pipe for initial cooling, and then passes through the refrigeration heat exchanger for cooling and dehumidification, a large amount of condensed water is discharged through the drain outlet.

[0016] It also includes a filter, which is arranged in the box body and inside the air inlet.

[0017] Compared with the prior art, the utility model has the following beneficial effects: in order to meet the requirements for dehumidification and energy saving, a condensation reheat heat exchanger is also arranged in front of the heat pipe heat exchange assembly and the refrigeration heat exchanger. After the humid air is cooled by the U-shaped three-dimensional heat pipe precooling section, it passes through the U-shaped three-dimensional heat pipe reheating section, and the temperature rises. At this time, the relative humidity of the supply air decreases; when passing through the condensation reheat heat exchanger, the air is heated again to achieve the requirements for precise control of temperature and relative humidity. By using the U-shaped three-dimensional heat pipe heat exchanger, the humid and hot fresh air is precooled, dehumidified and reheated, and then heated again by the condensation reheat heat exchanger. On the one hand, at the same unit power consumption, the dehumidification capacity is increased to 36% compared with the traditional refrigeration and dehumidification unit; on the other hand, when the same dehumidification capacity requirement is achieved, the refrigeration capacity and power consumption of the device can be reduced, saving about 58% of electricity compared with the traditional refrigeration and dehumidification unit. This device is urgently needed in the aerospace field, transportation subway stations, military ammunition warehouses, cultural archives, medical and pharmaceutical workshops, glass material manufacturing, tobacco industry, chemical industry and other places with high requirements for indoor relative humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is: the front view of the utility model;

[0019] Figure 2 It is: the top view of the utility model;

[0020] Figure 3 It is: a three-dimensional diagram of the utility model;

[0021] Figure 4 It is: a three-dimensional diagram of a heat pipe heat exchange assembly, a refrigeration heat exchanger and a condensing reheat heat exchanger;

[0022] Figure 5 Yes: Top view of the heat pipe heat exchange assembly, refrigeration heat exchanger and condensing reheat heat exchanger assembly (including gas flow direction);

[0023] Figure 6 Yes: Background technology (including evaporator and reheat electric heater).

[0024] Explanation of the reference numerals: box body 1, air inlet 2, air supply outlet 3, heat pipe heat exchange assembly 4, refrigeration heat exchanger 5, air blower 6, U-shaped three-dimensional heat pipe 7, evaporation end 8, condensation end 9, condensation reheat heat exchanger 10, flow regulating valve 11, drain outlet 12, filter 13. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 5 As shown, an energy-saving dehumidification device that accurately controls temperature and relative humidity, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a box body 1 and an air inlet 2 arranged at the left end of the box body 1, an air outlet 3 arranged at the right end of the box body 1, a heat pipe heat exchange component 4 arranged in the box body 1, a refrigeration heat exchanger 5 and a blower 6; Figure 2 , Figure 4 and Figure 5 As shown, the heat pipe heat exchange assembly 4 is arranged at the inner side of the air inlet 2 and includes a U-shaped three-dimensional heat pipe 7. The U-shaped three-dimensional heat pipe 7 includes a pre-cooling section, i.e., an evaporation end 8, a heat conduction section, and a reheat section, i.e., a condensation end 9, which are connected in sequence. The pre-cooling section is on the left side of the U-shaped three-dimensional heat pipe 7, the reheat section is on the right side of the U-shaped three-dimensional heat pipe 7, and the heat conduction section is at the bottom of the U-shaped three-dimensional heat pipe 7, and the connection section between the pre-cooling section and the reheat section; there is a recessed portion between the pre-cooling section and the reheat section, and the refrigeration heat exchanger 5 is arranged in the recessed portion, and one end of the refrigeration heat exchanger 5 is connected to the evaporation end 8 and the other end is connected to the condensation end 9, thereby forming an energy-saving dehumidification heat pipe; the air blower 6 is arranged at the inner side of the air supply port 3;

[0027] The outdoor hot and humid fresh air enters the box body 1 from the air inlet 2, and the evaporation end 8 of the U-shaped three-dimensional heat pipe 7 absorbs heat, so that the outdoor hot and humid fresh air is cooled and dehumidified. The internal medium of the U-shaped three-dimensional heat pipe 7 vaporizes and absorbs heat, and is quickly transferred to the other end of the pipe, that is, the evaporation end 8; when the evaporation end 8 begins to be heated, the liquid around the tube wall of the U-shaped three-dimensional heat pipe 7 will be instantly vaporized to generate steam. At this time, the pressure of the evaporation end 8 in the U-shaped heat pipe will increase, and the steam flow will flow to the condensation end 9 under the traction of the pressure; after the steam flow reaches the condensation end 9, it will condense into liquid, and at the same time release a large amount of heat to heat the outdoor fresh air. Then the internal medium of the U-shaped three-dimensional heat pipe 7 returns to the evaporation end 8 with the help of capillary force and gravity to complete a cycle;

[0028] like Figure 1, Figure 2 and Figure 3 As shown, it also includes a condensing reheat heat exchanger 10 arranged in the box body 1 and in front of the energy-saving dehumidification heat pipe, so that the heat pipe heat exchange assembly 4, the refrigeration heat exchanger 5 and the condensing reheat heat exchanger 10 form an energy-saving dehumidification heat pipe and a condensation heat recovery heat exchanger structure;

[0029] like Figure 2 , Figure 4 and Figure 5 As shown, the precooling section, heat transfer section and reheating section of the U-shaped three-dimensional heat pipe 7 adjust the temperature of the fresh air in turn. The internal medium temperature of the precooling section of the U-shaped three-dimensional heat pipe 7 is lower than the fresh air temperature. The heat is transferred from the precooling section of the heat pipe to the reheating section of the heat pipe. After the fresh air is cooled by the precooling section of the U-shaped three-dimensional heat pipe 7, it is cooled and dehumidified by the refrigeration heat exchanger 5, which greatly increases the dehumidification capacity of the surface cooler. The supercooled fresh air passes through the reheating section of the U-shaped three-dimensional heat pipe 7, and the temperature rises. At this time, the relative humidity of the fresh air decreases, but because the heat pipe itself does not have the temperature increase and The effect of reducing relative humidity is limited; the fresh air is heated again through condensation reheat heat exchange, and the temperature of the fresh air after refrigeration and dehumidification is compensated, thereby avoiding the phenomenon of condensation and frost on the surface of components that may be produced due to too low temperature, so that the relative humidity of the fresh air is further reduced, and only the cooling needs can be advanced, and the requirements for precise control of temperature and relative humidity can be achieved without additional heat energy; thus, this energy-saving dehumidification heat pipe and condensation heat recovery heat exchanger structure become an energy-saving dehumidification device that accurately controls temperature and relative humidity;

[0030] Dehumidification process: the moist fresh air enters the dehumidification device box 1 through the air inlet 2, and after being processed by the filter 13, enters the pre-cooling section of the U-shaped three-dimensional heat pipe 7, where the refrigerant vaporizes and absorbs heat, causing the moist air to be initially cooled; the cooled air is then cooled and dehumidified by the refrigeration heat exchanger 5, i.e., the evaporator, to precipitate a large amount of condensed water; the dehumidified low-temperature air is initially heated by the heat transferred from the pre-cooling section by the heat conduction section of the three-dimensional heat pipe after the refrigerant liquefies and releases heat; the initially heated air is then heated by the condensation reheat heat exchanger 10, and becomes fresh air that can accurately control the temperature and relative humidity and makes people comfortable, and is then sent into the room by the blower 6;

[0031] The energy-saving dehumidification device can not only accurately control the temperature and relative humidity, improve the suitability of the air outlet temperature of the fresh air blower, but also effectively utilize energy and reduce energy consumption; by using a U-shaped three-dimensional heat pipe heat exchanger, the hot and humid fresh air is pre-cooled, dehumidified and reheated, and then heated again by the condensation reheat heat exchanger 10. On the one hand, at the same unit power consumption, the dehumidification capacity is increased by 36% compared with the traditional refrigeration and dehumidification unit; on the other hand, when the same dehumidification capacity requirement is achieved, the refrigeration capacity and power consumption of the device can be reduced, saving 58% of electricity compared with the traditional refrigeration and dehumidification unit.

[0032] like Figures 1 to 4 As shown, the precooling section and reheating end of the U-shaped three-dimensional heat pipe 7 are straight pipes, the heat conduction section of the U-shaped three-dimensional heat pipe 7 is a curved pipe, the heat absorption section and the heat release section are parallel, and the precooling section and the reheating section are both perpendicular to the fresh air direction.

[0033] like Figures 1 to 4 As shown, the U-shaped three-dimensional heat pipe 7 is fixedly connected to the box body 1.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, it also includes a flow regulating valve 11, which is arranged on one side of the condensing reheat heat exchanger 10 and on the condensing reheat refrigerant passage (not shown in the figure) to effectively control the relative humidity of the fresh air.

[0035] like Figure 1 and Figure 3 As shown, it also includes a drain port 12, which is arranged at the bottom of the box body 1 and below the U-shaped three-dimensional heat pipe 7. After the humid fresh air enters the pre-cooling section of the U-shaped three-dimensional heat pipe 7 for initial cooling, and then passes through the refrigeration heat exchanger 5 for cooling and dehumidification, a large amount of condensed water is discharged through the drain port 12.

[0036] like Figure 2 and Figure 3 As shown, a filter 13 is also included, and the filter 13 is arranged inside the box body 1 and inside the air inlet 2.

[0037] The embodiments described above are only preferred implementations of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving dehumidification device for accurately controlling temperature and relative humidity, comprising a box body and an air inlet arranged at the left end of the box body, an air supply outlet arranged at the right end of the box body, a heat pipe heat exchange component arranged in the box body, a cooling heat exchanger and an air blower; the heat pipe heat exchange component is arranged on the inner side of the air inlet and includes a plurality of U-shaped three-dimensional heat pipes, the U-shaped three-dimensional heat pipe includes a pre-cooling section, i.e., an evaporation end, a heat conduction section and a reheating section, i.e., a condensation end, which are connected in sequence, the pre-cooling section is on the left side of the U-shaped three-dimensional heat pipe, the reheating section is on the right side of the U-shaped three-dimensional heat pipe, the heat conduction section is at the bottom of the U-shaped three-dimensional heat pipe, and the connecting section of the pre-cooling section and the reheating section; there is a recessed portion between the pre-cooling section and the reheating section, the cooling heat exchanger is arranged in the recessed portion, one end of the cooling heat exchanger is connected to the evaporation end, and the other end is connected to the condensation end, thereby forming an energy-saving dehumidification heat pipe; the air blower is arranged on the inner side of the air supply outlet; it is characterized in that: It also includes a condensation reheat heat exchanger arranged in the box body and in front of the energy-saving dehumidification heat pipe, so that the heat pipe heat exchange assembly, the refrigeration heat exchanger and the condensation reheat heat exchanger form an energy-saving dehumidification heat pipe and a condensation heat recovery heat exchanger structure; The precooling section, heat transfer section and reheating section of the U-shaped three-dimensional heat pipe adjust the temperature of the fresh air in turn. The internal medium temperature of the U-shaped three-dimensional heat pipe precooling section is lower than the fresh air temperature. The heat is transferred from the heat pipe precooling section to the heat pipe reheating section. After the fresh air is cooled by the U-shaped three-dimensional heat pipe precooling section, it is cooled and dehumidified by the refrigeration heat exchanger, which increases the dehumidification capacity of the surface cooler. The supercooled fresh air passes through the U-shaped three-dimensional heat pipe reheating section.

2. An energy-saving dehumidification device for accurately controlling temperature and relative humidity according to claim 1, characterized in that: There is one U-shaped three-dimensional heat pipe, the precooling section and the reheating end of the three-dimensional heat pipe are straight pipes, the heat conduction section of the three-dimensional heat pipe is a curved pipe, the heat absorption section and the heat release section are parallel, and the precooling section and the reheating section are both perpendicular to the fresh air direction.

3. The energy-saving dehumidification device for accurately controlling temperature and relative humidity according to claim 1, characterized in that: The U-shaped three-dimensional heat pipe is fixedly connected to the box body.

4. The energy-saving dehumidification device for accurately controlling temperature and relative humidity according to claim 1, characterized in that: It also includes a flow regulating valve, which is arranged on one side of the condensing and reheating heat exchanger and on the condensing and reheating refrigerant passage to effectively control the relative humidity of the fresh air.

5. The energy-saving dehumidification device for accurately controlling temperature and relative humidity according to claim 1, characterized in that: It also includes a drain outlet, which is arranged at the bottom of the box and below the U-shaped three-dimensional heat pipe. After the humid fresh air enters the pre-cooling section of the U-shaped three-dimensional heat pipe for initial cooling, and then passes through the refrigeration heat exchanger for cooling and dehumidification, a large amount of condensed water is discharged through the drain outlet.

6. The energy-saving dehumidification device for accurately controlling temperature and relative humidity according to claim 1, characterized in that: It also includes a filter, which is arranged in the box body and inside the air inlet.

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