CN102032628B - Air supply system of earth source heat pump air conditioner in edible fungus culture chamber - Google Patents

Abstract

The present invention relates to a ground source heat pump air conditioning system for edible mushroom cultivation rooms, comprising an edible mushroom cultivation room and a heat pump room located to one side thereof. The system is characterized in that: an air supply duct is horizontally arranged above the edible mushroom cultivation room and the heat pump room; a fresh air calorific value exchanger, a mixing section, a primary filter, a mixed air calorific value exchanger, a medium-efficiency filter, an ultraviolet disinfection and sterilization lamp, a humidifier, and a blower are sequentially arranged on the section of the air supply duct near the air inlet; a terminal humidifier is installed at the air outlet of the air supply duct above the edible mushroom cultivation room; a return air channel leading to the return air inlet is provided at the lower part of the edible mushroom cultivation room; and the calorific value exchange circuit of the ground source heat pump unit located in the heat pump room flows through the fresh air calorific value exchanger and the mixed air calorific value exchanger to regulate the temperature and humidity of the gas inside the air supply duct. The present invention humidifies the air inside the ground source heat pump air conditioning duct, meaning the air conditioning supply point and the humidifier humidification point coincide, which facilitates the determination of the temperature and humidity probe location and accurately and simultaneously reflects the temperature and humidity of the air inside the cultivation room.

Description

Edible mushroom cultivation room ground source heat pump air conditioning air supply system

technical field

The invention relates to a ground source heat pump air-conditioning air supply system for an edible fungus cultivation room. The air supply system belongs to the field of facility agriculture and is mainly used for intensive and industrialized edible fungus production.

Background technique

The basic principle of intensive and factory production of edible fungi is to use air-conditioning equipment and automatic measurement and control devices related to temperature, humidity and light, in a closed edible fungus cultivation "room" similar to a cold storage, through the "room" The automatic measurement and control of main environmental conditions such as temperature, humidity, _CO2 concentration, and light form an optimal environmental condition most suitable for the growth of edible fungi, and through the gradual development and improvement of edible fungus cultivation facilities, a complete set of A complete artificial production system of edible fungi. The use of factory production facilities and advanced measurement and control equipment to artificially set the best environmental conditions for the growth of edible fungi can not only shorten the growth cycle of edible fungi, but also greatly improve the efficiency and quality of edible fungus production; Edible fungi are produced in the off-season or even all year round in conventional production, which can make up for the shortage of off-season vegetables and increase the price of fresh edible fungi like off-season vegetables. Because the environmental conditions for the production of edible fungi are superior and can be adjusted according to different requirements, it is more conducive to the introduction, renewal and large-scale production of new varieties of edible fungi.

In the total energy consumption of the industrial production of edible fungi, the energy consumed by the edible fungus cultivation room for cooling in summer and heating in winter accounts for a considerable proportion. For ordinary central air-conditioning systems, whether it is an air-cooled heat pump unit or a chiller unit using a cooling tower, without exception, it is limited by the external weather conditions, that is, when the air-conditioned area needs more cooling or heating, the cooling capacity of the host Or the heat supply will be insufficient, resulting in a decrease in operating efficiency, which is especially affected when used in hot summer and cold winter regions. The heat exchange between the ground source heat pump unit and the outside world is through the ground, and the temperature of the ground is very stable, and the operating efficiency is not affected by changes in the outside air. Therefore, the ground source heat pump has the highest operating efficiency and the best stability. From the point of view of the entire operating principle of the ground source heat pump, the ground source heat pump system is actually a green air conditioner in the true sense. Whether it is running in winter or summer, it will not cause adverse effects on the outdoor atmospheric environment. At present, the ground source heat pump system is one of the mature technologies in the world's energy market. If environmental benefits, energy security and long-term utilization are considered, the ground source heat pump system is the best and most technologically-intensive alternative product. Groundwater ground source heat pump has many advantages such as simple structure and easy construction, and has been gradually applied and promoted.

Most of the existing groundwater ground source heat pumps use groundwater to directly cool the condenser of the heat pump unit or directly heat the evaporator of the heat pump unit. A ground source heat pump system disclosed in Chinese Patent Publication No. CN1854645 is composed of an evaporator, a condenser, a compressor and an expansion valve. The well water flows through the evaporator or condenser respectively as required, and the temperature difference between the groundwater body and the ambient air is fully utilized to adjust the temperature of the indoor circulating water. However, the edible fungus cultivation room requires an air duct air conditioning system. The ground source heat pump system does not use the natural cold or heat stored in the groundwater for cooling or heating of the outdoor fresh air, so there are obvious deficiencies in terms of energy utilization. The invention provides a ground source heat pump air-conditioning air supply system applicable to the occasion of an air duct system, and is especially suitable for an edible fungus cultivation room.

Edible fungi are aerobic fungi, and it is difficult to survive without O ₂ (wind). Therefore, the growth of mycelium needs sufficient fresh air (O ₂ ). Without O ₂ , the growth of mycelium will be hindered and slow, which will affect the growth and development, and even the mycelium will suffocate and die or autolyze, causing fruiting bodies to get sick and miscellaneous bacteria to breed. Especially when the density of the fungus bag is too high, the supply of _O2 is insufficient, which will affect the growth of mycelium. In the early stage of mushrooming in the loose bag, the mycelium will decompose faster, breathe more vigorously, and the temperature in the bag will increase. Fermentation is sour, unpleasant smell, and stuffy feeling; it is more necessary to strengthen ventilation, reduce temperature and increase oxygen, eliminate indoor pollution, and purify the ambient air. From the perspective of edible fungus culture medium, the CO ₂ released during the transformation process of mycelium feeding material has serious harm to the growth of edible fungi. When the _CO2 content in the air exceeds 0.3%, if it is not discharged in time, the viability of mycelia will decrease, the resistance to stress and miscellaneous properties will be weakened, the mushroom buds will wither and die in the mulberry stage, and the fruiting bodies will shrink and deformed mushrooms will seriously affect the quality and quality. Yield.

To sum up, the air handling unit in the edible mushroom cultivation room needs to supplement a large amount of outdoor fresh air to adjust the air. Since the present invention directly utilizes the natural cooling capacity stored in groundwater or outdoor fresh air with a large amount of heat for cooling or heating, the utilization rate of energy consumption is significantly improved, especially in hot summer and cold winter regions, and the energy saving effect is better. In addition, the humidity control range of the edible mushroom cultivation room is usually 65-85%, while the existing air duct air-conditioning system takes away a large amount of water during the process of temperature control, filtration, and oxygenation, resulting in low air humidity entering the cultivation room; Therefore, one or several humidifiers have to be added indoors to increase the humidity of the indoor environment. Since there is a considerable distance between the air supply point of the air conditioner and the humidification point of the humidifier, no matter where the temperature and humidity probe of the cultivation room environment automatic measurement and control device is set, it is difficult to reflect the indoor temperature and humidity at the same time.

Contents of the invention

The purpose of the present invention is to provide a ground-source heat pump air-conditioning air supply system for edible fungus cultivation rooms. The present invention directly uses the natural cooling capacity stored in groundwater or the outdoor fresh air with a large amount of heat for cooling or heating, so that the utilization rate of energy consumption is significantly improved, and the energy-saving effect is achieved. Better; at the same time, humidify the air in the air supply pipe of the ground source heat pump air conditioner, that is, the air supply point of the air conditioner coincides with the humidification point of the humidifier, so that it is convenient to determine the position of the temperature and humidity probe, and accurately and simultaneously reflect the air in the cultivation room temperature and humidity.

The present invention is characterized in that: a ground source heat pump air-conditioning air supply system for an edible fungi cultivation room, comprising an edible fungi cultivation room and a heat pump machine room located on one side thereof, characterized in that: the edible fungus cultivation room and the machine room are horizontally arranged There is an air supply pipe, and the section of the air supply pipe close to the air inlet is provided with a fresh air calorific value exchanger, a mixing section, an initial effect filter, a mixed air calorific value exchanger, a medium effect filter, and an ultraviolet disinfection and sterilization lamp , humidifier and air blower, a terminal humidifier is arranged on the air outlet of the air supply pipe above the edible fungus cultivation room, the lower part of the edible fungus cultivation room is provided with a return air passage leading to the input port of the return air outlet, located in the heat pump room The calorific value exchange circuit of the ground source heat pump unit inside flows through the fresh air calorific value exchanger and the mixed air calorific value exchanger to realize the adjustment of the temperature and humidity of the gas in the air supply pipe.

In order to better realize the present invention, the ground source heat pump unit includes a heat pump external heat exchange cycle loop and a heat pump internal heat exchange cycle loop, and the heat pump external heat exchange cycle loop and the heat pump internal heat exchange cycle loop are respectively provided with an external heat exchange cycle Pumps and heat exchange circulation pumps within heat pumps.

A return air buffer room is also arranged between the above-mentioned heat pump machine room and the edible fungus cultivation room. An intelligent controller is installed in the buffer room. The input end of the intelligent controller is connected with the temperature, humidity and The measurement and control probe of _CO2 concentration is connected with the bacteria bag temperature and humidity probe, and the output end of the intelligent controller is connected with the external heat exchange circulation pump, the internal heat exchange circulation pump of the heat pump, the ultraviolet disinfection and sterilization lamp, the air blower, the humidifier and the terminal humidifier. Humidifier is connected.

The fresh air calorific value exchanger and the mixed air calorific value exchanger mentioned above are direct contact calorific value exchangers or indirect contact calorific value exchangers. Humidifiers and terminal humidifiers are ultrasonic humidifiers or high-pressure spray humidifiers. The temperature, humidity and carbon dioxide concentration measurement and control probe is a three-in-one measurement and control probe for temperature, humidity and _CO2 concentration.

The ground source heat pump air-conditioning air supply system of the edible fungus cultivation room of the present invention has the following advantages: one is the ground source heat pump air-conditioning air supply system applicable to the occasion of the air duct system, especially suitable for the edible fungus cultivation room; The natural cooling capacity or heat of a large amount of outdoor fresh air is used for cooling or heating, and the utilization rate of energy consumption is significantly improved, especially in hot summer and cold winter areas, and the energy saving effect is better; the third is to humidify the air in the air supply pipe of the ground source heat pump air conditioner , that is, the air supply point of the air conditioner coincides with the humidification point of the humidifier, so that it is convenient to determine the position of the temperature and humidity probe, and accurately and simultaneously reflect the temperature and humidity of the air in the cultivation room.

Description of drawings

Fig. 1 is a schematic structural view of a ground source heat pump air-conditioning air supply system for an edible mushroom cultivation room according to the present invention.

In the figure: 1. Deep well water supply pipe 2. Deep well return water pipe 3. Ground source heat exchanger 4. Heat pump external heat exchanger 5. Heat pump unit 6. Heat pump internal heat exchanger 7. External heat exchange circulation pump 8. Fresh air outlet 9 .Fresh air calorific value exchanger 10. Mixing section 11. Primary filter 12. Internal heat exchange circulation pump 13. Mixed air calorific value exchanger 14. Medium effect filter 15. Return air pipe 16. Ultraviolet disinfection and sterilization lamp 17 .Intermediate humidifier 18. Blower 19. Environmental intelligent control system 20. Air supply pipe 21. Terminal humidifier 22. Cultivation room 23. Three-in-one measurement and control probe 24. Bacteria bag temperature and humidity probe 25. Return air channel 26. Air outlet 27. Return air outlet 28. Buffer room 29. Heat pump room.

Detailed ways

The present invention will be further described below in conjunction with the specific embodiments and accompanying drawings.

The invention consists of a heat pump unit, a ground source medium system, an air-conditioning air supply system and a return air system, and an intelligent control system for the environment of an edible mushroom cultivation room. The heat pump unit (5) is placed in the heat pump machine room (29), including a heat pump external heat exchanger (4) and a heat pump internal heat exchanger (6). The ground source medium system mainly consists of a ground source heat exchanger (3), a deep well water supply pipe (1) leading to the groundwater layer, a deep well return water pipe (2), and a circulation pipeline. The air-conditioning air supply system includes a fresh air heat value exchanger (9), a mixing section (10), a primary filter (11), a mixing air Calorific value exchanger (13), medium-efficiency filter (14), ultraviolet disinfection and sterilization lamp (16), intermediate humidifier (17), air blower (18), air supply pipe (20) and each cultivation room (22 ) terminal humidifier (21); the air-conditioning return air system includes the return air passage (25) connecting each cultivation room, the return air outlet (27) from the buffer room (28), through the return air pipe (15), and the air supply Mixing section connections in wind systems. The intelligent control system (19) for the environment of the edible fungi cultivation room includes a three-in-one measurement and control probe (23) for temperature, humidity and CO ₂ concentration, and a temperature and humidity probe for the mushroom bag (24).

The above fresh air calorific value exchanger and mixed air calorific value exchanger can choose direct contact calorific value exchanger or indirect contact calorific value exchanger; fresh air calorific value exchanger and heat pump external heat exchanger, external heat exchange circulation pump (7) Connected in series in the circulation pipeline of the ground source medium system; the mixed air heat mass exchanger, the heat pump internal heat exchanger, and the internal heat exchange circulation pump (12) are connected in series in the internal circulation pipeline of the heat pump unit. In the cooling (summer) or heating (winter) working conditions, the fresh air is cooled or heated during the heat value exchange process between the outdoor fresh air and the fresh air heat value exchanger, and the cooling or heat required by the fresh air heat value exchanger must be provided by the ground. The source medium system provides underground deep well water; the mixed air composed of fresh air and return air exchanges heat value with the mixed air heat value exchanger. During the heat value exchange process, the mixed air is cooled or heated, and the cooling or heat required by the mixed air heat value exchanger Supplied by heat pump unit.

The above-mentioned humidifier and each terminal humidifier can choose an ultrasonic humidifier or a high-pressure spray humidifier. The mixed air entering each cultivation room is humidified twice, and it is completed before each air outlet, so the air conditioning The air supply point coincides with the humidification point of the humidifier, so that it is convenient to determine the position of the temperature and humidity probe, and accurately and simultaneously reflect the temperature and humidity of the air in the cultivation room. Therefore, each cultivation room only needs to install one three-in-one measurement and control probe for temperature, humidity and _CO2 concentration. Of course, if necessary, a temperature and humidity probe for the bacteria bag can also be added.

The present invention is not limited to the above-mentioned best implementation mode, and anyone can obtain other various forms of ground source heat pump air-conditioning air supply systems for edible fungus cultivation rooms under the inspiration of the present invention. All equivalent changes and modifications made according to the patent scope of the present invention shall fall within the scope of the present invention.

Claims (6)

1. A ground source heat pump air-conditioning air supply system for an edible fungi cultivation room, comprising an edible fungi cultivation room and a heat pump machine room located on one side thereof, characterized in that: an air supply pipe is arranged horizontally on the upper side of the edible fungus cultivation room and the machine room , the side section of the air supply pipe close to the air inlet is provided with a fresh air calorific value exchanger, a mixing section, an initial effect filter, a mixed air calorific value exchanger, a medium effect filter, an ultraviolet disinfection and sterilization lamp, and an intermediate humidification A terminal humidifier is provided on the air outlet of the air supply pipe above the edible fungus cultivation room, and a return air passage leading to the input port of the return air outlet is provided at the lower part of the edible fungus cultivation room. The calorific value exchange circuit of the source heat pump unit flows through the fresh air calorific value exchanger and the mixed air calorific value exchanger to realize the adjustment of the temperature and humidity of the gas in the air supply pipe. 2. The ground source heat pump air-conditioning air supply system for the edible fungus cultivation room according to claim 1, characterized in that: the ground source heat pump unit includes a heat pump external heat exchange loop and a heat pump internal heat exchange loop, and the heat pump external The heat exchange circulation loop and the heat exchange inner circulation loop of the heat pump are respectively provided with an outer heat exchange circulation pump and an inner heat exchange circulation pump of the heat pump. 3. The ground source heat pump air-conditioning air supply system for edible fungus cultivation room according to claim 1 or 2, characterized in that: there is also a return air buffer room between the heat pump machine room and the edible fungus cultivation room, and the buffer An intelligent controller is installed in the room, and the input terminal of the intelligent controller is connected with the temperature, humidity and The concentration measurement and control probe and the temperature and humidity probe of the bacteria bag are connected. The output end of the intelligent controller is connected with the external heat exchange circulation pump, the internal heat exchange circulation pump of the heat pump, the ultraviolet disinfection and sterilization lamp, the intermediate humidifier, the air blower and the terminal humidifier. Humidifier is connected. 4. The ground source heat pump air-conditioning air supply system for edible mushroom cultivation room according to claim 1, characterized in that: the fresh air heat value exchanger and the mixed air heat value exchanger are direct contact heat value exchangers or indirect contact heat value exchangers. heat value exchanger. 5. The ground source heat pump air-conditioning air supply system for edible mushroom cultivation room according to claim 1, characterized in that: the intermediate humidifier and the terminal humidifier are ultrasonic humidifiers or high-pressure spray humidifiers. 6. The ground source heat pump air-conditioning air supply system for edible mushroom cultivation room according to claim 1, characterized in that: the temperature, humidity and carbon dioxide concentration measurement and control probes are temperature, humidity and

Concentration three-in-one measurement and control probe.

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