Refrigeration and humidification device applied to mushroom house and edible mushroom house environment control system

Abstract

The utility model discloses a kind of refrigeration humidifying devices applied to mushroom house, including shell, surface cooler, humidifying device, fan and air duct system;Surface cooler, humidifying device, fan and air duct system are located in shell, shell is equipped with inlet at the place close to humidifying device;The humidifying device includes honeycomb ceramic combination and the water spraying device being set to its air inlet end face, the water spraying device intermittently sprays water to honeycomb ceramic body to make it keep wet;A proportioning valve is arranged in A air duct, B air duct is equipped with b proportioning valve, the a proportioning valve and b proportioning valve are linkage reverse control, for adjusting the air volume proportion of A air duct and B air duct, and the sum of air volume of A air duct and B air duct is kept constant.Makes temperature reduce and have humidity, humidity is controlled simultaneously when temperature reduces.Avoid energy waste, efficient energy saving.A kind of edible mushroom house environment control system is also disclosed.

Description

Technical Field

[0001] This utility model relates to a refrigeration and humidification device for mushroom houses, and more particularly to a refrigeration and humidification device for precise temperature and humidity control in mushroom houses used for industrialized cultivation of edible fungi. It also relates to an environmental control system for edible fungi mushroom houses. Background Technology

[0002] Edible fungi (such as mushrooms, shiitake mushrooms, and enoki mushrooms) have extremely demanding requirements for temperature and humidity, typically requiring a temperature range of 18-25℃ and a relative humidity of 70%-95%. Currently, mushroom houses generally use independent humidifiers and refrigeration units to separately control humidity and temperature.

[0003] Traditional humidification methods, such as high-pressure spraying and ultrasonic humidification, easily produce liquid water droplets that adhere to the surface of the mushrooms, potentially leading to disease. While traditional evaporative cooling systems (water curtains) can simultaneously cool and humidify, their cooling and humidification capabilities are limited. They struggle to lower the temperature to a suitable range in hot weather and fail to meet humidity requirements in dry seasons. If a compressor is used for refrigeration, its evaporator inevitably produces condensate while cooling the air, resulting in dehumidification, which contradicts the humidification requirements of the mushroom house.

[0004] Existing technologies suffer from the following drawbacks: 1. Cooling and dehumidification processes are coupled, making independent control difficult; 2. Traditional paper-based wet curtains have poor cooling and humidification capabilities, are prone to corrosion, breed bacteria, and have a short lifespan; 3. Other humidification methods may generate liquid water mist, affecting the healthy growth of edible fungi. Therefore, there is an urgent need for a mushroom house environmental control device that can decouple temperature and humidity control, is highly efficient and energy-saving, and hygienic and reliable. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a refrigeration and humidification device for mushroom houses. This refrigeration and humidification device for mushroom houses can reduce the temperature of the mushroom house while maintaining humidity. The humidity is controlled at the same time as the temperature is reduced, and it is highly efficient and energy-saving.

[0006] Another technical problem that this utility model needs to solve is to provide an environmental control system for edible mushroom houses.

[0007] The present invention relates to a refrigeration and humidification device for mushroom houses, which can adopt the following technical solution: A refrigeration and humidification device for mushroom houses includes a shell, a surface cooler, a humidification device, a fan, and an air duct system; the surface cooler, humidification device, fan, and air duct system are located inside the shell, and the shell has an inlet near the humidification device; the humidification device includes a honeycomb ceramic body and a water spray device disposed towards its air inlet end face, the water spray device intermittently spraying water onto the honeycomb ceramic body to keep it moist; the air duct system is disposed downstream of the honeycomb ceramic body, and the air duct system includes an A-channel air duct, a B-channel air duct, and a mixing channel. The air ducts are configured as follows: Air duct A is equipped with a proportional valve (a) to allow humidified air from the humidifier to bypass the surface cooler; Air duct B is equipped with a proportional valve (b) to allow humidified air from the humidifier to flow through the surface cooler; A mixing duct is located behind the surface cooler, and air ducts A and B enter the mixing duct downstream of the surface cooler. The mixing duct uses a fan to deliver the mixed air out of the casing; The proportional valves (a) and (b) are linked and reverse-controlled to adjust the airflow ratio through air ducts A and B, and to maintain a constant sum of airflow through air ducts A and B.

[0008] The following improvements can be further implemented to solve the problem of this utility model:

[0009] Further improvements include: the water spraying device is a high-pressure sprayer or a water spray nozzle, which is controlled by a timer or a humidity sensor to start and stop intermittently spray water.

[0010] Further improvements include: the honeycomb ceramic body has a through-hole structure and its material has an open pore structure.

[0011] Further improvements include: the a proportional valve and the b proportional valve are electrically connected to the controller; the linkage and reverse control of the a proportional valve and the b proportional valve is achieved by the temperature and humidity sensor in the mushroom house feeding back the signal to the controller, which then automatically drives the actuator.

[0012] A further improvement is that the surface cooler is a finned evaporator of a refrigeration machine.

[0013] Further improvements include: the surface cooler is a finned tube heat exchanger, the chiller and the surface cooler constitute a refrigeration cycle system, the surface cooler is connected to the chiller and the chiller provides the cold source.

[0014] Further improvements include: the chiller unit consists of a compressor, condenser, throttling device, shell-and-tube heat exchanger, and chilled water tank.

[0015] An environmental control system for edible mushroom cultivation rooms adopts the following technical solution:

[0016] It includes at least one of the aforementioned refrigeration and humidification devices used in mushroom houses.

[0017] The above technical solution has the following technical effects:

[0018] 1. This utility model achieves decoupled temperature and humidity control: By employing proportional flow splitting and remixing technology, it solves the problem of the traditional technology where all airflow is humidified and then cooled, leading to a large amount of condensation and resulting in humidity reduction. This results in a bundled relationship between cooling and dehumidification, allowing for both temperature reduction and humidity control. It avoids the problem of uneven temperature and humidity in the mushroom house caused by traditional technology where humidification and cooling occur in separate areas, resulting in insufficient mixing of humidified and cooled air.

[0019] 2. This invention fully utilizes the efficient isenthalpic humidification and cooling effect of the honeycomb ceramic body on moisture evaporation, pre-treats the air, reduces the load on subsequent mechanical refrigeration, minimizes energy loss during the mixing process, and achieves high overall system energy efficiency. It avoids the significant energy waste of traditional constant temperature and humidity machines that employ "cooling and dehumidifying first, then increasing enthalpy for humidification" in summer, thus achieving high efficiency and energy saving.

[0020] 3. This utility model is hygienic and reliable: the honeycomb ceramic material is inorganic, corrosion-resistant, and does not easily breed bacteria and mold, with a service life far longer than paper water curtains, ensuring the biosafety of the mushroom house environment. The humidification process is isenthalpic humidification, which does not produce visible liquid water droplets or white mist, avoiding the risk of water mist wetting the mushrooms and causing diseases. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structural principle of Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram of the structural principle of Embodiment 2 of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments.

[0024] Example 1: As Figure 1As shown, the refrigeration and humidification device used in mushroom houses includes: a shell, a surface cooler, a humidification device, a fan 4, and an air duct system; the surface cooler, the humidification device, the fan 4, and the air duct system are located inside the shell, and the shell has an inlet 6 near the humidification device. The humidification device includes a honeycomb ceramic body 5 and a water spray device 12 facing its air inlet end face. The water spray device 12 intermittently sprays water onto the honeycomb ceramic body 5 to keep it moist. The air duct system is located downstream of the honeycomb ceramic body 5 and includes an A-channel air duct 7, a B-channel air duct 8, and a mixing air duct 9. The A-channel air duct 7 is equipped with an a-proportional valve 71, which allows the humidified air from the humidification device to bypass the surface cooler 1. The B-channel air duct 8 is equipped with a b-proportional valve 81, which allows the humidified air from the humidification device to flow through the surface cooler 1. The mixing air duct 9 is located behind the surface cooler. The A-channel air duct 7 and the B-channel air duct 8 enter the mixing air duct 9 downstream of the surface cooler 1 and are sent out of the casing by the fan 4. The a-proportional valve 71 and the b-proportional valve 81 are linked and reverse controlled to adjust the airflow ratio of the A-channel air duct 7 and the B-channel air duct 8, and to keep the sum of the airflow of the A-channel air duct 7 and the B-channel air duct 8 constant.

[0025] In this example, the surface cooler 1 is a finned evaporator of a refrigeration machine.

[0026] A further improvement is that the water spraying device 12 is a high-pressure sprayer or a water spray nozzle, which is controlled by a timer or a humidity sensor to start and stop intermittently spray water.

[0027] A further improvement is that the honeycomb ceramic body 5 has a through-hole structure and its material has an open pore structure.

[0028] A further improvement is that the a proportional valve 71 and the b proportional valve 81 are electrically connected to the controller. The linkage and reverse control of the a proportional valve 71 and the b proportional valve 81 is fed back to the controller by the temperature and humidity sensor in the mushroom house, and the controller automatically drives the actuator to complete the operation.

[0029] Working Principle: This embodiment provides a direct evaporative refrigeration and humidification device. During operation, the surface cooler is connected to the refrigeration unit. The refrigeration cycle is as follows: the compressor compresses the refrigerant; the high-temperature, high-pressure gas releases heat and condenses into a liquid through the condenser 2 and cooling fan 3. After being throttled and depressurized by a throttling device (such as an expansion valve), it enters the surface cooler 1 (finned evaporator) to evaporate and absorb heat. Finally, the low-temperature, low-pressure vapor returns to the compressor to complete the cycle. Outdoor air first passes through inlet 6 and is humidified and initially cooled by the moistened honeycomb ceramic body 5. Subsequently, the airflow is divided into two streams. One stream flows directly to the inlet of fan 4 through air duct A 7, controlled by proportional valve a 71. The other stream flows through air duct B 8, controlled by proportional valve b 81, and is deeply cooled and dehumidified by the surface cooler 1, becoming low-temperature, dry air. The two streams of air with drastically different temperatures and humidity mix in mixing duct 9 and are then sent into the mushroom house by fan 4. The controller receives signals from temperature and humidity sensors inside the mushroom house. After calculation, it issues commands to drive the actuators of valves a and b, changing the valve opening ratio, or fixing the opening ratio of valves a and b at a certain level. Then, it controls the start and stop of the chiller to control the cooling and dehumidification of the air in channel B, thereby precisely controlling the final temperature and humidity of the supplied air. Additionally, controlling the start-up time and interval of water pump 11 to control the water spray volume of sprayer 12 can also serve as an auxiliary means of controlling air humidity. This embodiment is suitable for an independent control system for a single mushroom house.

[0030] Example 2: As Figure 2 As shown, the refrigeration and humidification device applied to the mushroom house differs from Embodiment 1 in that the surface cooler 1 is a finned tube heat exchanger. The chiller unit and the surface cooler 1 constitute a refrigeration cycle system. The surface cooler 1 is connected to the chiller unit, which provides the cold source.

[0031] A chiller unit consists of a compressor, condenser, throttling device, shell-and-tube heat exchanger, and chilled water tank.

[0032] This embodiment provides a cold water-based refrigeration and humidification device. Its main difference from Embodiment 1 lies in the refrigeration terminal. The cooling capacity produced by the relatively independent refrigeration unit (compressor, condenser, throttling device, and shell-and-tube heat exchanger) is stored in a water tank (the water system details are not fully shown in the figure). The surface cooler 1 is a water-finned tube heat exchanger, into which cold water from the water tank is pumped by a water pump. The air treatment process is exactly the same as in Embodiment 1: first, the air is humidified by the honeycomb ceramic body 5, then split into two paths, A and B. One path passes directly through the air, while the other is cooled by the surface cooler 1 (cold water coil). Finally, the air is mixed and sent into the mushroom house by the fan 4. The advantage of this embodiment is that a large refrigeration unit can produce cold water and simultaneously supply it to the refrigeration and humidification units of multiple mushroom houses via water pumps and a pipeline network. Each mushroom house unit has its own honeycomb ceramic humidifier, water coil, proportional valve, and fan, achieving centralized refrigeration and distributed temperature and humidity control, making it very suitable for large-scale edible mushroom factories.

[0033] In addition, if the ambient temperature is lower than the target temperature of the mushroom house, the cooling system can be stopped to lower the air temperature. Instead, a heat pump device (an additional heat pump device can be used) can be used to heat the incoming air or the water in the water tank to increase enthalpy and humidify the air, thereby raising the temperature and humidity of the mushroom house.

[0034] This utility model is flexible and applicable: it can be adapted to the needs of mushroom houses of different sizes by using different refrigeration terminals (direct evaporation surface cooler or chilled water coil, finned tube heat exchanger), and one set of chilled water system can serve multiple mushroom houses, reducing investment and operating costs.

[0035] In addition to being applicable to the cultivation of edible fungi, this invention can also be applied to the indoor cultivation of other crops, flowers and Chinese medicinal herbs, as well as to the cultivation of microorganisms in enclosed spaces.

[0036] An environmental control system for edible mushroom houses includes at least one cooling and humidifying device as described in the above examples for use in mushroom houses.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A refrigeration and humidification device for use in mushroom houses, characterized in that: The device includes a housing, a surface cooler, a humidifier, a fan (4), and an air duct system. The surface cooler, humidifier, fan (4), and air duct system are located inside the housing, which has an inlet (6) near the humidifier. The humidifier includes a honeycomb ceramic body (5) and a water spray device (12) facing its air inlet end face. The water spray device (12) intermittently sprays water onto the honeycomb ceramic body (5) to keep it moist. The air duct system is located downstream of the honeycomb ceramic body (5) and includes an A-channel air duct (7), a B-channel air duct (8), and a mixing air duct (9). The A-channel air duct (7) is equipped with a proportional valve (71) to allow the air from the humidifier to flow through the humidifier. Humid air bypasses the surface cooler (1); the B-channel air duct (8) is equipped with a b proportional valve (81) to allow humidified air from the humidification device to flow through the surface cooler (1); the mixing air duct (9) is located behind the surface cooler, and the A-channel air duct (7) and the B-channel air duct (8) enter the mixing air duct (9) downstream of the surface cooler (1). The mixing air duct (9) sends the mixed air out of the casing through the fan (4); the a proportional valve (71) and the b proportional valve (81) are linked and reverse controlled to adjust the air volume ratio of the A-channel air duct (7) and the B-channel air duct (8), and to keep the sum of the air volume of the A-channel air duct (7) and the B-channel air duct (8) constant.

2. The refrigeration and humidification device for mushroom houses according to claim 1, characterized in that: The water spraying device (12) is a high-pressure sprayer or a water spray nozzle, which is controlled by a timer or a humidity sensor to start and stop intermittently spray water.

3. The refrigeration and humidification device for mushroom houses according to claim 1, characterized in that: The honeycomb ceramic body (5) has a through-hole structure and its material has an open pore structure.

4. The refrigeration and humidification device for mushroom houses according to any one of claims 1 to 3, characterized in that: The a proportional valve (71) and b proportional valve (81) are electrically connected to the controller. The linkage and reverse control of the a proportional valve (71) and b proportional valve (81) is achieved by the temperature and humidity sensor in the mushroom house feeding back the signal to the controller, which then automatically drives the actuator.

5. The refrigeration and humidification device for mushroom houses according to claim 1, characterized in that: The surface cooler (1) is a finned evaporator of a refrigeration machine.

6. The refrigeration and humidification device for mushroom houses according to claim 1, characterized in that: The surface cooler (1) is a finned tube heat exchanger. The chiller and the surface cooler (1) constitute a refrigeration cycle system. The surface cooler (1) is connected to the chiller and the chiller provides the cold source.

7. The refrigeration and humidification device for mushroom houses according to claim 6, characterized in that: A chiller unit consists of a compressor, condenser, throttling device, shell-and-tube heat exchanger, and chilled water tank.

8. An environmental control system for edible mushroom cultivation rooms, characterized in that, It includes at least one refrigeration and humidification device for use in mushroom houses as described in any one of claims 1-7.

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