A library humidity conditioning system

Abstract

This invention relates to the field of library building design technology, specifically a library humidity control system, including a dehumidification unit connected to a water storage unit, which in turn is connected to a humidification unit. The dehumidification unit includes a dehumidification duct and a dehumidification fan, with the duct connected to a condenser. The humidification unit includes a humidification duct and a humidification fan, with the duct connected to an evaporator and an air outlet via a gas distributor. The water storage unit includes a water tank connected to both the condenser and the evaporator. This invention employs an integrated dehumidification and humidification design, utilizing the heat absorption and release mechanism of the refrigerant to eliminate the need for an outdoor unit, thus reducing equipment size. This invention can store the condensate obtained from dehumidification and recycle it during humidification. It can also store water through rainwater collectors, significantly reducing water consumption in libraries in dry areas that require frequent humidification, achieving energy conservation and emission reduction.

Description

Technical Field

[0001] This invention relates to the field of library architectural design, specifically a library humidity control system. Background Technology

[0002] Libraries are places for storing and lending paper books and other printed materials. Their core function is to preserve and store books and documents for extended periods. For paper-based media like books, specific environmental conditions are required to extend their shelf life. Specifically, maintaining relatively constant humidity is crucial to prevent damage. For instance, in excessively humid environments, the paper and printing are easily damaged by moisture, leading to the growth of bacteria and pests that can harm the books. Conversely, excessively dry environments can cause paper to become brittle, binding structures to fail, and pages to curl and warp, all of which can damage the books. This is especially true for documents on special media, such as ancient books, maps, and films, which are more susceptible to damage from dry conditions. To maintain a stable humidity environment, a humidity control system is needed to dynamically regulate the air humidity within the library.

[0003] The core of indoor humidity regulation lies in controlling the water content in the air, which includes both dehumidification and humidification. In humid environments, dehumidification and water vapor removal are the main methods, while in dry environments, humidification is more necessary. Since books require continuous humidity control throughout the day, maintaining humidity in libraries in dry areas requires continuous humidification, which consumes a lot of water and electricity resources, resulting in significant operating expenses for libraries.

[0004] A patent application (CN201910456897.1) discloses an energy-saving air conditioning system for libraries. This system includes: a cooling water unit providing cooling water to a constant temperature and humidity unit; a chilled water unit providing chilled water to the constant temperature and humidity unit; a natural cooling water unit providing natural cooling water to the constant temperature and humidity unit; a constant temperature and humidity unit comprising a compressor, a surface cooler, and a fan, receiving control signals from a control unit to cool the load; and a control unit comprising a temperature and humidity detector and a controller. The temperature and humidity detector detects the temperature and humidity of the air conditioner's return air and controls the constant temperature and humidity unit through the controller to achieve temperature and humidity control. However, this patent lacks a water resource recycling mechanism and relies entirely on external water supply, making it unsuitable for use in arid and water-scarce areas.

[0005] Another patent application, CN201820822248.X, discloses a humidification structure for an energy-saving fresh air system in libraries. This structure includes a blower, a first motor, a mounting bracket, and a second motor. The blower is connected to an air supply duct. The first motor is fixed to the outer wall of a first humidification chamber, and a fixed plate is mounted on its shaft. The mounting bracket is fixed to the bottom of a movable frame, and a working net is attached to the top of a functional spring. The second motor is fixed to the outer wall of a second humidification chamber, and a barrier net is installed on the top of the inner wall of the second humidification chamber. A second motor shaft is also mounted on the second motor. While this patent provides an energy-saving and consumption-reducing humidification structure for libraries, it does not reduce water consumption during humidification and is not suitable for widespread use in arid and water-scarce areas. Summary of the Invention

[0006] The purpose of this invention is to provide a library humidity control system that can be used in dry areas to reduce water consumption in library humidity control.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A library humidity control system includes a chassis containing a dehumidification unit connected to a water storage unit, which in turn is connected to a humidification unit. The dehumidification unit includes a dehumidification duct connected to a dehumidification fan. One end of the dehumidification duct has an air inlet, and the other end is connected to a condenser. The water storage unit includes a water reservoir connected to the condenser and an evaporator. The humidification unit includes a humidification duct connected to a humidification fan. One end of the humidification duct is connected to the evaporator, and the other end is connected to a gas distributor. The gas distributor has multiple air outlets connected to multiple air distribution pipes, with both the air inlet and outlet located within the library. The evaporator is connected to the water storage unit. The air outlet of the condenser and the air inlet of the evaporator are connected via ducts.

[0009] Preferably, a condenser tube is installed inside the condenser, and a water collection tank is installed inside the condenser; a condensate pipe is connected to the bottom of the water collection tank, and the condensate pipe is connected to the water storage tank.

[0010] Preferably, the evaporator is equipped with an evaporation tube inside and a recovery tank is provided at the bottom of the evaporator; the bottom end of the recovery tank is connected to a recovery water pipe, which is connected to a water storage tank.

[0011] Preferably, a compressor is installed inside the casing, and the compressor is connected to the outlet and inlet ends of the condenser and the inlet and outlet ends of the evaporator via cooling pipes, respectively, and the cooling pipes are filled with refrigerant.

[0012] Preferably, the evaporation pipe includes a water supply pipe, which is connected to the water storage device through the evaporation water pipe, and a heating pipe is sleeved on the outside of the water supply pipe; multiple capillary pores are provided on the side wall of the evaporation pipe, which connect the water supply pipe to the external space, and the heating pipe has a sealed structure at the capillary pores.

[0013] Preferably, a filter is installed on the evaporation water pipe, and a solenoid valve is installed at the front end of the filter.

[0014] Preferably, a primary distributor is provided at the front end of the gas distributor, and the primary distributor and the gas distributor are connected by a connecting pipe; a heater is provided at the rear end of the gas distributor, and multiple heating rods are provided on the heater, which are evenly arranged between the gas distribution pipes.

[0015] Preferably, a level gauge is installed inside the water storage tank, and the water storage tank is connected to an external waterway through a water supply pipe.

[0016] Preferably, the water storage device is connected to a water storage unit via a water storage pipe, and the water storage unit includes a rainwater collector and a water purifier.

[0017] Preferably, the chassis is equipped with a control panel, which is electrically connected to the dehumidification unit, the humidification unit, and the water storage unit; a humidity sensor is installed inside the library, and the humidity sensor is signal-connected to the control panel.

[0018] The beneficial effects of this invention are:

[0019] This invention employs an integrated dehumidification and humidification design, allowing for separate dehumidification and humidification of the air within the library via dehumidification and humidification units. The operating load of these units can be dynamically adjusted based on humidity sensors installed within the library, thus achieving dynamic regulation of the library's air humidity. Utilizing this integrated design, the condensate obtained during dehumidification can be collected and stored in a water storage unit. When humidification is needed, this condensate is evaporated through an evaporator to increase the humidity of the exhaust air, achieving the desired humidification effect. Furthermore, this invention can recycle water vapor lost within the library, reusing a portion of the lost humidity for humidification. This effectively reduces water consumption in humidity control systems used in arid climates, conserving valuable water resources.

[0020] This invention connects the dehumidification duct and the humidification duct, allowing the air in the library to circulate internally. The condenser for dehumidification and the evaporator for humidification use the same compressor and refrigerant for heat exchange, so that the condenser in the condenser cools the condensate, while the evaporator in the evaporator heats the water and evaporates it. This fully utilizes the residual heat from cooling the condensate and the residual cold from heating the evaporator, improving energy efficiency. It eliminates the need for separate cooling and heating components, as well as an outdoor unit for heat dissipation, reducing equipment size and simplifying system control and maintenance.

[0021] This invention features a unique evaporator tube structure. Water from the water supply pipe permeates through capillary tubes to form a water film on the outer wall of the evaporator tube. Then, through heating by the heating tube and the continuous flow of air in the evaporator, the water film that has permeated to the outside of the evaporator tube evaporates rapidly into water vapor. Compared with traditional methods such as ultrasonic vibration, this invention does not produce mist droplets, which can effectively prevent excessive liquid mist droplets from entering the human respiratory system and achieve safe humidification. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0023] Figure 2 This is an overall schematic diagram of Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0025] Figure 4 This is a cross-sectional view of the internal structure of the condenser in Embodiment 2 of the present invention;

[0026] Figure 5 This is a cross-sectional view of the internal structure of the evaporator in Embodiment 3 of the present invention;

[0027] Figure 6 for Figure 5 A magnified sectional view of the area marked A in the middle;

[0028] Figure 7 This is a schematic diagram of the gas distributor structure in Embodiment 4 of the present invention;

[0029] Figure 8 This is a partial cross-sectional schematic diagram of the internal structure of the gas distributor in Embodiment 4 of the present invention.

[0030] In the diagram: 1. Dehumidifying duct; 11. Dehumidifying fan; 2. Condenser; 21. Condensate pipe; 22. Water collection tank; 3. Evaporator; 31. Evaporation pipe; 32. Recovery tank; 33. Water supply pipe; 34. Water supply branch pipe; 35. Heating pipe; 36. Capillary pore; 4. Humidifying duct; 41. Humidifying fan; 5. Water storage tank; 51. Condensate pipe; 52. Evaporation water pipe; 53. Filter; 54. Water supply pipe; 55. Water storage pipe; 6. Compressor; 7. Chassis; 8. Control panel; 9. Gas distributor; 91. Primary distributor; 92. Connecting pipe; 93. Gas distribution pipe; 94. Heater; 95. Heating rod. Detailed Implementation

[0031] Example 1

[0032] The following is a further explanation of the present invention in conjunction with specific embodiments, such as... Figure 1-3As shown, this embodiment is a library humidity control system, comprising three parts: a dehumidification unit, a humidification unit, and a water storage unit. The dehumidification unit includes a dehumidification duct 1 and a dehumidification fan 11, with the duct 1 connected to a condenser 2 via the fan 11. The humidification unit includes a humidification duct 4 and a humidification fan 41, with the duct 4 connected to an evaporator 3 via the fan 41. The water storage unit includes a water storage tank 5. The end of the dehumidification duct 1 is connected to an air inlet in the library, and the end of the humidification duct 4 is connected to a gas distributor. After the humidified air is evenly distributed by the gas distributor, it is then connected to multiple air outlets in the library via multiple air distribution pipes, ensuring that the humidified air is evenly distributed throughout the library and maintaining a balanced humidity throughout the library.

[0033] The condenser 2 is used to dehumidify the air drawn from the dehumidification duct 1. Its internal condensation structure condenses water vapor in the air into water droplets. The water condensed in the condenser 2 enters the water storage tank 5 through the condensate pipe 51 for storage. The evaporator 3 evaporates the water into water vapor and disperses it into the air inside the humidification duct 4, achieving the effect of humidifying the air blown out of the humidification duct 4. The water storage tank 5 is connected to the evaporator 3 through the evaporation water pipe 52, allowing the water stored in the water storage tank 5 to be used by the evaporator 3. A filter 53 is installed on the evaporation water pipe 52 to filter and purify the water when it is introduced into the evaporator 3, preventing bacteria and impurities from entering the evaporator 3 and contaminating the outlet air. Figure 3 As shown, a water recovery pipe is also installed on the evaporator 3. The water recovery pipe is connected to the water storage tank 5, which can recover the excess liquid water in the evaporator 3 back into the water storage tank 5, so as to avoid water accumulation in the evaporator 3 and affect the dehumidification effect.

[0034] The water storage tank 5 has a water storage cavity and a level gauge to monitor the water level in real time. In addition to being connected to the condenser 2 and the evaporator 3, the water storage tank 5 is also connected to an external water channel through a water supply pipe 55. When the internal water level is insufficient, water can be replenished through the external water channel. In addition, the water storage tank 5 is also connected to a water storage device through a water storage pipe 55. The water storage device includes a rainwater collector and a water purifier. It can collect rainwater when there is precipitation, purify it through the water purifier, and store it in the water storage tank 5 for later use. When the water level inside the water storage tank 5 is too low, the water storage pipe 55 is activated first to replenish water. If the water in the rainwater collector is insufficient to replenish the water, the water supply pipe 54 is then activated to replenish water from the external water channel.

[0035] A compressor 6 is installed inside the casing 7. The compressor 6 is connected to the condenser 2 and the evaporator 3 through two sets of pipes. A condenser tube is installed inside the condenser 2, and an evaporator tube is installed inside the evaporator 3. Both the condenser tube and the evaporator tube are filled with refrigerant, and the condenser tube is connected to the compressor and the evaporator tube through pipes. The gaseous refrigerant is compressed in the compressor and then sent to the evaporator tube, where it releases heat to evaporate the liquid water in the evaporator into water vapor, and at the same time, the refrigerant becomes liquid. Then, the high-pressure liquid refrigerant is converted into low-pressure liquid by the throttling device on the compressor, and then it is sent back to the condenser tube, where it absorbs heat to condense the water vapor in the condenser 2 into liquid water, and then returns to the compressor for circulation. In this embodiment, the cooling condensate in the condenser 2 and the heating evaporation in the evaporator 3 are cyclical, and there is no need to set up an outdoor unit to exchange heat with the outside air, so as to make full use of the heating and cooling effects brought about by the phase change of the refrigerant.

[0036] A control panel 8 is installed on the outer wall of the chassis 7. The control panel 8 is connected to each component and can control the operation of each unit in the system and set the operating conditions. A humidity sensor is installed in the library and is connected to the control panel 8. The control panel 8 can control the operation of each unit in real time according to the signal of the humidity sensor.

[0037] In actual use, the dehumidifier 11 operates, drawing air from the library into the dehumidifier duct 1 through the air inlet located in the library. The air passes through the condenser 2 and enters the evaporator 3 through the duct. Then, under the action of the humidifier motor 41, it reaches the air outlet in the library through the humidifier duct 4 and is discharged.

[0038] If the humidity sensor detects that the air humidity in the library is not within the preset range, the control panel 8 controls the compressor to start working, causing the refrigerant in the pipe to begin phase change circulation. At this time, the water vapor in the air passing through the condenser 2 will be condensed into liquid water and collected in the water tank 5 through the condenser pipe 21. If the air humidity in the library is higher than the preset range, the solenoid valve of the filter 53 will be closed, and the water in the water tank 5 will not be able to enter the evaporator 3. The dry air dehumidified by the condenser 2 will be discharged back into the library, thus achieving the dehumidification of the air in the library.

[0039] If the air humidity in the library is lower than the preset range, the control panel 8 controls the filter 53 to open its solenoid valve. At this time, the water in the water tank 5 can enter the evaporator 3 through the evaporation water pipe 53. The water in the evaporator 3 will evaporate quickly under the action of heating of the evaporation pipe and continuous air flow, and become water vapor that enters the air. The air humidified by water vapor is discharged into the library through the humidification air duct 4, thus humidifying the air in the library.

[0040] The liquid level gauge installed inside the water storage tank 5 can monitor the liquid level in the water storage tank 5 in real time. If the liquid level is lower than the preset value, the water storage pipe 55 will be opened to replenish water from the rainwater collector. If the liquid level is still insufficient, the water supply pipe 54 will be opened to replenish water from the external water channel to avoid insufficient water in the water storage tank 5 and thus prevent air humidification.

[0041] Example 2

[0042] This embodiment describes the internal structure of the condenser 2 in the library humidity control system proposed in Embodiment 1, as follows: Figure 4 As shown, it mainly includes a condenser tube 21.

[0043] The inlet end of the condenser tube 21 is located on the upper part of the side wall of the condenser 2, and the outlet end is located on the lower part of the side wall of the condenser 2. Inside the condenser 2, a regular multi-layered coiled structure is formed to increase the contact area between the condenser tube 21 and the air. Alternatively, the multi-layered condenser tubes 21 can be staggered to make the airflow path more tortuous, increase the air resistance inside the condenser 2, increase the air residence time, and improve the condensation effect.

[0044] A triangular double-sloped structure is provided on the bottom surface of the condenser 2, forming a pair of symmetrical water collection tanks 22. The end of the water collection tank 22 near the air inlet is high, while the end near the air outlet is low. It is connected to the condensate pipe 51 at the lowest point. Water molecules in the air condense into liquid water on the condensate pipe 21 and drip into the water collection tank 22. Finally, it can enter the water storage tank 5 through the condensate pipe 51 for collection and storage.

[0045] The inlet end of the condenser 21 is connected to the throttling device on the compressor 6 through a pipe, which can deliver low-temperature and low-pressure liquid refrigerant into the condenser 2. The low-pressure liquid refrigerant absorbs heat and evaporates inside the condenser 2, transforming into high-temperature and low-pressure gaseous refrigerant. At the same time, it cools and condenses water molecules in the air into liquid water, thereby achieving the dehumidification effect.

[0046] Example 3

[0047] This embodiment describes the internal structure of the evaporator 3 in the library humidity control system proposed in Embodiment 1, as follows: Figure 5 and Figure 6 As shown, it mainly includes an evaporator tube 31.

[0048] The evaporator tube 31 consists of two parts: a water supply tube 33 and a heating tube 35. The water supply tube 33 is connected to the water storage tank 5 through the evaporation water tube 52, and can supply liquid water from the water storage tank 5 into the evaporator tube 3. The heating tube 35 is connected to the compressor 6 through a pipe and is filled with refrigerant.

[0049] The bottom of the water supply pipe 33 is provided with multiple rows of water supply branch pipes 34, which can form a multi-layered mesh evaporation pipe 31; while the heating pipes 35 are respectively sleeved on the outside of each water supply branch pipe 34, which can heat the liquid water inside the water supply branch pipe 34; such as Figure 6 As shown, multiple capillary holes 36 are evenly arranged on the side wall of the evaporator tube 31. The capillary holes 36 penetrate the heating tube 35 and connect the external space with the internal water supply branch pipe 34. The heating tube 35 has a closed structure at the capillary holes 36, so the refrigerant inside the heating tube 35 will not leak to the outside through the capillary holes 36.

[0050] Liquid water in the water supply branch pipe 34 can seep through capillary pores to the outer surface of the heating pipe 35, forming a liquid film. The heating pipe 35 heats the liquid film, raising its temperature. Under the heating effect of the heating pipe 35 and the continuous air flow, the liquid water that has seeped to the outside will quickly evaporate into water vapor, enter the air, and then be discharged into the library through the humidifying air duct 4, thereby humidifying the air in the library.

[0051] The inlet end of the heating tube 35 is connected to the compressor 6 through a pipe. The compressor 6 can compress the high-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. After entering the heating tube 35, the gaseous refrigerant releases heat and transforms into a high-pressure liquid refrigerant. The heat released will then heat and absorb the liquid water. The outlet end of the heating tube 35 is connected to the throttling device on the compressor 6 through a pipe. The refrigerant that has completed heating can be put back into the condenser 2 for cooling.

[0052] Example 4

[0053] This embodiment describes the internal structure of the gas distributor 9 in the library humidity control system proposed in Embodiment 1, as follows: Figure 7 and Figure 8 As shown, the front end of the gas distributor 9 is connected to a primary distributor 91 via a connecting pipe 92, and the primary distributor 91 is fixedly connected to the humidifying air duct 4.

[0054] The primary distributor 91 has a conical structure with a conical body coaxially arranged inside. This allows the humidified air inside the originally small-diameter humidification duct 4 to be rectified by the conical body and uniformly expand the cross-sectional area of ​​the duct. A perforated plate is provided at the end of the primary distributor 91, which can reduce the pressure drop caused by the increase in the duct diameter and further make the distribution of humidified air more uniform. A perforated plate is also provided inside the gas distributor 9, and a duct structure is connected to the rear end of the perforated plate. This can evenly split the humidified air that has passed through the primary distributor 91 and send it into each duct structure.

[0055] A heater 94 is fixedly connected to the rear end of the gas distributor 9, and multiple heating rods 95 are installed inside the heater 94. The heating rods 95 are evenly distributed among the air duct structures inside the gas distributor 9, so that the multiple air duct structures can be evenly heated and kept warm, thereby avoiding condensation caused by humid air coming into contact with dry and cold pipe walls. The water droplets condensed in the gas distributor 9 will also fall down into the air duct structure and be heated, and under the action of the continuously flowing air, they will be re-evaporated into water vapor, avoiding the loss of moisture during air transmission. The end of the air duct structure is connected to an air distribution pipe 93, and multiple air distribution pipes 93 are connected to multiple air outlets in the library, so that the humid air can be evenly distributed in the library, avoiding problems such as uneven local humidification effect.

[0056] The above description is merely a further explanation of the present invention in conjunction with specific embodiments. All descriptions made do not imply any limitation on the scope of protection of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A library humidity control system, comprising a chassis, wherein a dehumidification unit is disposed within the chassis, the dehumidification unit is connected to a water storage unit, and the water storage unit is connected to a humidification unit, characterized in that: The dehumidification unit includes a dehumidification duct connected to a dehumidification fan; one end of the dehumidification duct has an air inlet, and the other end is connected to a condenser; the water storage unit includes a water storage tank connected to the condenser; the water storage tank is connected to an evaporator; the humidification unit includes a humidification duct connected to a humidification fan; one end of the humidification duct is connected to the evaporator, and the other end is connected to a gas distributor; the gas distributor is connected to multiple air outlets via multiple air distribution pipes, and both the air inlet and outlet are located inside the library; the evaporator is connected to the water storage tank via an evaporation water pipe; the air outlet of the condenser and the air inlet of the evaporator are connected via... The evaporator is connected to the air duct; an evaporator tube is installed inside the evaporator, and a recovery tank is installed at the bottom of the evaporator; a recovery water pipe is connected to the bottom of the recovery tank, and the recovery water pipe is connected to the water storage tank; a compressor is installed inside the casing, and the compressor is connected to the outlet and inlet ends of the condenser tube and the inlet and outlet ends of the evaporator tube through cooling pipes respectively, and the cooling pipe is filled with refrigerant; the evaporator tube includes a water supply pipe, which is connected to the water storage tank through the evaporator water pipe, and a heating tube is sleeved on the outside of the water supply pipe; multiple capillary pores are provided on the side wall of the evaporator tube, and the capillary pores connect the water supply pipe to the external space, and the heating tube has a sealed structure at the capillary pores.

2. The library humidity control system according to claim 1, characterized in that: The condenser is equipped with a condenser tube and a water collection tank; the bottom of the water collection tank is connected to a condensate pipe, which is connected to the water storage tank.

3. The library humidity control system according to claim 1, characterized in that: A filter is installed on the evaporation water pipe, and a solenoid valve is installed at the front end of the filter.

4. The library humidity control system according to claim 1, characterized in that: The gas distributor has a primary distributor at its front end, which is connected to the gas distributor via a connecting pipe; the gas distributor has a heater at its rear end, which has multiple heating rods evenly arranged between the gas distribution pipes.

5. The library humidity control system according to claim 1, characterized in that: The water storage tank is equipped with a level gauge and is connected to an external waterway via a water supply pipe.

6. The library humidity control system according to claim 5, characterized in that: The water storage device is connected to a water storage unit via a water storage pipe. The water storage unit includes a rainwater collector and a water purifier.

7. The library humidity control system according to claim 1, characterized in that: The chassis is equipped with a control panel, which is electrically connected to the dehumidification unit, the humidification unit, and the water storage unit; a humidity sensor is installed in the library, and the humidity sensor is signal-connected to the control panel.

Images