CN205052357U - Big -arch shelter humiture intelligence control system - Google Patents

Big -arch shelter humiture intelligence control system Download PDF

Info

Publication number
CN205052357U
CN205052357U CN201520765899.6U CN201520765899U CN205052357U CN 205052357 U CN205052357 U CN 205052357U CN 201520765899 U CN201520765899 U CN 201520765899U CN 205052357 U CN205052357 U CN 205052357U
Authority
CN
China
Prior art keywords
water
valve
booth
water pump
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520765899.6U
Other languages
Chinese (zh)
Inventor
殷月亮
夏世文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhuzhou Liangxianhe Mushroom Ecological Technology Co Ltd
Original Assignee
Zhuzhou Liangxianhe Mushroom Ecological Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhuzhou Liangxianhe Mushroom Ecological Technology Co Ltd filed Critical Zhuzhou Liangxianhe Mushroom Ecological Technology Co Ltd
Priority to CN201520765899.6U priority Critical patent/CN205052357U/en
Application granted granted Critical
Publication of CN205052357U publication Critical patent/CN205052357U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor

Landscapes

  • Air Conditioning Control Device (AREA)

Abstract

The utility model relates to a big -arch shelter is planted to the plant, discloses a big -arch shelter humiture intelligence control system. Humiture intelligence control system includes big -arch shelter, cold water source device, water pump, fan cascade, return water pond, the cascade is installed in the big -arch shelter, cold water source device, water pump pass through the raceway and are connected with the fan cascade, be equipped with first valve between cold water source device and the water pump, be equipped with the second valve between water pump and the fan cascade, the return water pond is passed through the drain pipe and is connected with the fan cascade, the return water pond intakes with the water pump and fails water piping connection, return water pond and water pump are intake and are equipped with the third valve between the raceway, the parallelly connected raceway that the big -arch shelter passes through between water pump and the fan cascade is connected with the fan cascade of other one or more big -arch shelters, fan cascade in big -arch shelter and other one or more big -arch shelters is connected with the return water pond through the drain pipe that connects in parallel. Humiture intelligence control system can realize real -time supervision and regulation and control to humiture in a plurality of big -arch shelters.

Description

A kind of green house temperature-humidity intelligence control system
Technical field
The utility model relates to a kind of planting greenhouse, more specifically, relates to a kind of green house temperature-humidity intelligence control system.
Background technology
At present, the production of China most area edible mushroom generally concentrates on these three low temperature seasons of spring autumn and winter season, and high temperature season seldom fruiting in summer, this is inseparable with the environmental condition required for edible fungi growth.The environmental condition affecting edible fungi growth mainly comprises the conditions such as temperature, humidity, illumination, air and ventilation.Temperature is one of topmost environmental condition of edible fungi growth growth, and different kinds is in different growth and development stages, also different to temperature requirement.General mycelial growth demands temperature is higher, and at 20 ~ 26 DEG C, the temperature of sporophore growth demands is lower, generally at 13 ~ 18 DEG C.The time of bacterium, the time of fruiting and quality are sent out in the height impact of temperature, and therefore temperature decides success or failure and the economic benefit of production.In addition, humidity is also one of key factor affecting edible fungi growth.In the mycelial growth stage, relative air humidity will be advisable below 75%; In the fruiting stage, require that relative air humidity is more than 90%.In summer, China's most area is hot dry, and temperature is general all more than 30 DEG C, and there will be " burning spore " phenomenon when edible mushroom grows at this temperature, causes the output underproduction even to be had no harvest.As adopted the refrigeration plants such as air-conditioning to force to cool to air in booth, then easily cause that fresh air in canopy is less and air is comparatively dry, work capacity consumption is comparatively large, and production cost increases greatly.
Summary of the invention
The purpose of this utility model is the problem solving prior art, provides a kind of green house temperature-humidity intelligence control system.
The utility model is achieved by following technical solution:
A kind of green house temperature-humidity intelligence control system, comprises booth, cold water source device, water pump, blower fan cascade, back pool;
Described blower fan cascade is arranged in booth;
Described cold water source device, water pump are connected with blower fan cascade entrance by water-supply-pipe;
The first valve is provided with between described cold water source device and water pump;
The second valve is provided with between described water pump and blower fan cascade;
Described back pool to be exported with blower fan cascade by drainpipe and is connected;
Described back pool is connected with water feeding of water pump water-supply-pipe;
The 3rd valve is provided with between described back pool and water feeding of water pump water-supply-pipe;
Described booth is connected with the blower fan cascade entrance of other one or more booth by the water-supply-pipe in parallel arranged between water pump and blower fan cascade;
Described booth is exported with the blower fan cascade in other one or more booth and is connected with back pool by drainpipe in parallel;
Described back pool is connected with cold water source device;
The 4th valve is provided with between described back pool and cold water source device.
The blower fan of described blower fan cascade adopt in axial flow blower, centrifugal blower, diagonal flow fan one or more.
Owing to can be absorbed when sun in summer illumination is mapped to booth appearance, booth external skin temperatures is raised thus accelerates the temperature rise speed in booth, for slowing down the temperature rise speed in booth, simultaneously in order to recycle water resource, further, described booth appearance top is provided with water injector, bottom described booth appearance, surrounding is provided with water leg, described water injector is connected with water pump water outlet water-supply-pipe, the 5th valve is provided with between described water injector and water pump, described water leg is connected with drainpipe, described water injector is the pipeline of surrounding perforate, be provided with in the pipe of multiple valve along in-pipe flow direction one or more.
For getting rid of miscellaneous bacteria interference, be strictly on guard against the living contaminants in water, further, between described blower fan cascade and back pool or back pool inside is provided with sterilizer, described sterilizer adopt in ozone sterilization, chlorbenside bacterium, ultraviolet sterilization one or more.
For realizing the real-time detection of canopy temperature and humidity, further, be provided with the first temperature sensor, humidity sensor in booth, described booth wall is provided with exhaust fan, described exhaust fan adopt in axial flow blower, centrifugal blower, diagonal flow fan one or more.
In order to detect the water temperature in cold water source device in real time, ensureing that the water temperature being transported to blower fan cascade entrance from cold water source device meets setting requirement, further, in described cold water source device, being provided with the second temperature sensor.
In order to detect the water temperature be back in back pool in real time, to make full use of the cold energy in cold water when water temperature is lower in back pool, it is the liquid level detected in real time in back pool simultaneously, ensure that water pump can continue to draw water in back pool for fan cascade and water injector, further, three-temperature sensor and liquid level sensor is provided with in described back pool.
For preventing the water temperature in cold water source device because raising after system cloud gray model a period of time, exceed design temperature scope and affect blower fan cascade working effect, further, described back pool is provided with refrigeration plant, described refrigeration plant adopt in compression refrigerating machine, Absorption Refrigerator, steam jet refrigerator and semiconductor refrigerator one or more.
For improving the efficiency of energy utilization of whole system, reduce energy resource consumption, further, described booth, water-supply-pipe, drainpipe, sterilizer, back pool appearance are all enclosed with heat-insulation layer, anti-sealing is the quick heat exchange with surrounding environment in flow process, affect the temperature control effect of blower fan cascade and increase the energy consumption of refrigeration plant of back pool, described heat-insulation layer adopt in mineral wool, rock wool, polyurethane one or more.
For realizing the real-time detection of temperature, the above first temperature sensor, the second temperature sensor, three-temperature sensor adopt thermocouple sensor, thermal resistance sensor, one or more in infrared temperature-test sensor.
For realizing adjustment to piping flow, the above first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve adopt in motor-driven valve, pneumatic operated valve, hydraulic operated valve one or more.
For realizing real-time detection to booth humidity, described humidity sensor adopt in lithium chloride humidity sensor, carbon dew cell, aluminium oxide moisture meter, Ceramic Humidity Sensor one or more.
For realizing real-time detection to liquid level in back pool, described liquid level sensor adopt in float-type liquid level sensor, floating ball type liquid level sensor, static pressure type liquid level sensor one or more.
In order to realize the adjustment of discharge of pump, described water pump is provided with flow regulator, described pump capacity adjusting device adopt be connected with variable-frequency motor, one or more in bypass line.
Further, described booth is provided with controller, and described controller and the first temperature sensor, humidity sensor, the second temperature sensor, three-temperature sensor, liquid level sensor, refrigeration plant, exhaust fan, water pump and the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve adopt wireless or wire communication to be connected.
Described temperature and humidity intelligent control system is by the real-time detection of the first temperature sensor, the second temperature sensor, three-temperature sensor, humidity sensor and liquid level sensor, controller receives temperature humidity and liquid level signal, control the actuator actions such as water pump, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, exhaust fan, refrigeration plant, realize the control to the temperature and humidity in booth.
Compared with prior art, the utility model has following beneficial effect:
Green house temperature-humidity intelligence control system described in the utility model can realize the automatic control and adjustment of temp. and humidity in multiple booth simultaneously, build the environment of an edibility bacteria growing, to ensure that edible mushroom can realize anti-season in summer and produce, in addition, this system adopts automatic control equipment, without the need to artificial regulatory, reduce cost of labor.
Accompanying drawing explanation
Fig. 1 is single green house temperature-humidity intelligence control system schematic diagram;
Fig. 2 is multiple green house temperature-humidity intelligence control system schematic diagrames.
Embodiment
Below in conjunction with embodiment, the utility model is further described.Wherein, accompanying drawing only for exemplary illustration, expression be only schematic diagram, but not pictorial diagram, can not be interpreted as the restriction to this patent; In order to embodiment of the present utility model is described better, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; For a person skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Embodiment 1
As shown in Figure 1, single green house temperature-humidity intelligence control system, comprises booth 1, blower fan cascade 201; Blower fan cascade 201 is placed in booth; The first temperature sensor 3, humidity sensor 4 is provided with in booth 1.Booth wall is provided with the exhaust fan 203 regulating booth interior humidity; Booth top is provided with the water injector 5 for cooling booth ceiling; Bottom booth appearance, surrounding is provided with the water leg 6 reclaiming and sprayed the water guttered down along booth appearance by water injector; The second valve 202 controlling discharge in blower fan cascade and the 5th valve 501 controlling water injector flow is provided with in supply channel.
As shown in Figure 2, multiple green house temperature-humidity intelligence control system, comprises booth 1, cold water source device 7, back pool 8, the 3rd valve 804, the 4th valve 805, sterilizer 9, water pump 10, controller 11, water-supply-pipe 12, drainpipe 13; Cold water source device 7, water pump 10 are connected with blower fan cascade 201 entrance by water-supply-pipe 12; The first valve 702 is provided with between cold water source device 7 and water pump 10; Back pool 8 is exported with blower fan cascade 201 by drainpipe 13 and is connected; Back pool 8 and water pump 10 water-supply-pipe of intaking is connected; Back pool 8 and water pump 10 are intake between water-supply-pipe and are provided with the 3rd valve 804; Back pool 8 is connected with cold water source device 7; The 4th valve 805 is provided with between back pool 8 and cold water source device 7; Booth 1 is connected with blower fan cascade 201 entrance of other one or more booth by the water-supply-pipe in parallel arranged between water pump 10 and blower fan cascade 201; Booth 1 is exported with the blower fan cascade 201 in other one or more booth and is connected with back pool 8 by drainpipe in parallel; The second temperature sensor 701 for detecting water temperature is provided with in cold water source device 7; The three-temperature sensor 801 for detecting temperature and liquid level in back pool and liquid level sensor 802 is provided with in back pool 8; Back pool is connected with the refrigeration plant 803 for cooling backwater pool inner water.
In the present embodiment, controller 11 adopts radio communication to be connected with the second temperature sensor 701 in the first temperature sensor 3 in each booth, humidity sensor 4, cold water source device 7, the three-temperature sensor 801 in back pool, liquid level sensor 802, refrigeration plant 803, exhaust fan 203, water pump 10 and the first valve 702, second valve 202, the 3rd valve 804, the 4th valve 805, the 5th valve 501.
In the present embodiment, the blower fan in cascade blower fan 201 adopts axial flow blower; First temperature sensor 3, second temperature sensor 701 and three-temperature sensor 801 all adopt thermocouple temperature sensor; Water injector 5 is the pipeline of surrounding perforate; Cold water source device 7 is well; First valve 702, second valve 202, the 3rd valve 804, the 4th valve 805, the 5th valve 501 all adopt motor-driven valve; Humidity sensor 4 adopts lithium chloride humidity sensor; Liquid level sensor 802 adopts float-type liquid level sensor; Sterilizer 9 adopts ultraviolet sterilization; Water pump 10 adopts variable-frequency motor adjust flux; Refrigeration plant 803 adopts semiconductor refrigerator; Exhaust fan 203 adopts axial flow blower; Heat-insulation layer adopts mineral wool.
During system works, the temperature-humidity signal detected is passed to controller 11 by the first temperature sensor 3 in booth 1 and humidity sensor 4, and the temperature signal received and moisture signal compare with the temperature range a of setting and the humidity range b of setting by controller 11 respectively, when the temperature signal received from certain booth is greater than set temperature range a, controller 11 sends signal to the second valve 202, 5th valve 501, water pump 10, first valve 702, water pump 10, second valve 202, 5th valve 501, first valve 702 starts action, the signal that water pump 10 sends according to controller 11 extracts water with certain flow from cold water source device 7, simultaneously, the second valve 202 of discharge in the 5th valve 501 of the control water injector flow of the booth of regulation and control and control blower fan cascade is needed to open certain opening according to the signal that controller 11 sends, a next water part is drawn up by blower fan cascade 201 for humidification of lowering the temperature to booth from cold water source device 7, another part is then by water injector 5 pairs of booth coolings at booth top, until the temperature in the booth that need regulate is positioned at the temperature range a of setting, when the moisture signal that controller 11 receives is greater than the humidity range b of setting, the exhaust fan 203 given in booth 1 is sent exhausting signal by controller 11, exhaust fan 203 to the outer exhausting of booth 1 to reduce the humidity in booth 1, until the humidity in the booth that need regulate is positioned at the humidity range b of setting, the water sprayed from water injector 5 flows into water leg 6 along booth appearance, converges, enter sterilizing in sterilizer 9 together with the water flowing through blower fan cascade 201, and the water after sterilizing flows into back pool 8, the second temperature sensor 701 in cold water source device 7, the three-temperature sensor 801 in back pool 8 and liquid level sensor 802 detect respectively to liquid level in the water temperature in the water temperature in cold water source device, back pool 8 and back pool 8 respectively, and detection signal is passed to controller 11, when the water temperature in back pool 8 does not exceed design temperature scope c and liquid level in pond is positioned at setting range d, first valve 702 is closed, 3rd valve 804 is opened, and water pump 10 starts draw water from back pool 8 supply cascade 201 and water injector 5, when when the water temperature in back pool 8 is greater than the temperature range c of setting, the water temperature in cold water source device 7 does not exceed the temperature range e of setting, the 4th valve 805 be communicated with between back pool 8 and cold water source device 7 is opened, water in back pool 8 flows into cooling in cold water source device 7, and water pump 10 continues draw water from cold water source device 7 supply cascade 201 and water injector 5, when the water temperature in the water temperature in back pool 8 and cold water source device 7 all exceedes setting range, refrigerating plant 803 starts refrigeration makes water temperature drop in back pool 8, now, 4th valve 805, first valve 702 is closed, 3rd valve 804 is opened, water pump 10 extracts by the cooled water supply cascade 201 of refrigeration plant 803 and water injector 5 periodic duty from back pool 8, until the water temperature in cold water source device 7 is positioned at the temperature range e of setting.
Obviously, above-described embodiment is only for the technical solution of the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.

Claims (9)

1. a green house temperature-humidity intelligence control system, is characterized in that, comprises booth, cold water source device, water pump, blower fan cascade, back pool;
Described blower fan cascade is arranged in booth;
Described cold water source device, water pump are connected with blower fan cascade entrance by water-supply-pipe;
The first valve is provided with between described cold water source device and water pump;
The second valve is provided with between described water pump and blower fan cascade;
Described back pool to be exported with blower fan cascade by drainpipe and is connected;
Described back pool is connected with water feeding of water pump water-supply-pipe;
The 3rd valve is provided with between described back pool and water feeding of water pump water-supply-pipe;
Described booth is connected with the blower fan cascade entrance of other one or more booth by the water-supply-pipe in parallel arranged between water pump and blower fan cascade;
Described booth is exported with the blower fan cascade in other one or more booth and is connected with back pool by drainpipe in parallel;
Described back pool is connected with cold water source device;
The 4th valve is provided with between described back pool and cold water source device.
2. green house temperature-humidity intelligence control system according to claim 1, it is characterized in that, described booth appearance top is provided with water injector, bottom described booth appearance, surrounding is provided with water leg, described water injector is connected with water pump water outlet water-supply-pipe, be provided with the 5th valve between described water injector and water pump, described water leg is connected with drainpipe.
3. green house temperature-humidity intelligence control system according to claim 2, is characterized in that, between described blower fan cascade and back pool or back pool inside is provided with sterilizer.
4. green house temperature-humidity intelligence control system according to claim 3, is characterized in that, is provided with the first temperature sensor, humidity sensor in described booth, and described booth wall is provided with exhaust fan.
5. green house temperature-humidity intelligence control system according to claim 4, is characterized in that, is provided with the second temperature sensor in described cold water source device.
6. green house temperature-humidity intelligence control system according to claim 5, is characterized in that, is provided with three-temperature sensor and liquid level sensor in described back pool.
7. green house temperature-humidity intelligence control system according to claim 6, is characterized in that, described back pool is connected with refrigeration plant.
8. green house temperature-humidity intelligence control system according to claim 7, it is characterized in that, described booth is provided with controller, and described controller and the first temperature sensor, humidity sensor, the second temperature sensor, three-temperature sensor, liquid level sensor, refrigeration plant, exhaust fan, water pump and the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve adopt wireless or wire communication to be connected.
9. green house temperature-humidity intelligence control system according to claim 8, is characterized in that, described booth, water-supply-pipe, drainpipe, sterilizer, back pool appearance are all enclosed with heat-insulation layer.
CN201520765899.6U 2015-09-30 2015-09-30 Big -arch shelter humiture intelligence control system Expired - Fee Related CN205052357U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520765899.6U CN205052357U (en) 2015-09-30 2015-09-30 Big -arch shelter humiture intelligence control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520765899.6U CN205052357U (en) 2015-09-30 2015-09-30 Big -arch shelter humiture intelligence control system

Publications (1)

Publication Number Publication Date
CN205052357U true CN205052357U (en) 2016-03-02

Family

ID=55378989

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520765899.6U Expired - Fee Related CN205052357U (en) 2015-09-30 2015-09-30 Big -arch shelter humiture intelligence control system

Country Status (1)

Country Link
CN (1) CN205052357U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105843305A (en) * 2016-04-19 2016-08-10 柳州名品科技有限公司 Agricultural vegetable greenhouse intelligent management platform
CN105843302A (en) * 2016-04-19 2016-08-10 柳州名品科技有限公司 Vegetable greenhouse intelligent management platform having video analysis function
CN105867482A (en) * 2016-04-19 2016-08-17 柳州名品科技有限公司 Agricultural vegetable greenhouse intelligent management platform based on wireless communication
CN105867481A (en) * 2016-04-19 2016-08-17 柳州名品科技有限公司 Vegetable greenhouse management platform
CN106249610A (en) * 2016-09-14 2016-12-21 齐鲁工业大学 A kind of multifunction water spray and drainage control system
CN106376374A (en) * 2016-08-29 2017-02-08 深圳前海弘稼科技有限公司 Automatic cooling and oxygenating method for plantation box and plantation box

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105843305A (en) * 2016-04-19 2016-08-10 柳州名品科技有限公司 Agricultural vegetable greenhouse intelligent management platform
CN105843302A (en) * 2016-04-19 2016-08-10 柳州名品科技有限公司 Vegetable greenhouse intelligent management platform having video analysis function
CN105867482A (en) * 2016-04-19 2016-08-17 柳州名品科技有限公司 Agricultural vegetable greenhouse intelligent management platform based on wireless communication
CN105867481A (en) * 2016-04-19 2016-08-17 柳州名品科技有限公司 Vegetable greenhouse management platform
CN106376374A (en) * 2016-08-29 2017-02-08 深圳前海弘稼科技有限公司 Automatic cooling and oxygenating method for plantation box and plantation box
CN106249610A (en) * 2016-09-14 2016-12-21 齐鲁工业大学 A kind of multifunction water spray and drainage control system

Similar Documents

Publication Publication Date Title
CN205052357U (en) Big -arch shelter humiture intelligence control system
CN205052254U (en) Heat energy -saving cooling greenhouse looses in edible mushroom cultivation water circulating ground source
CN205052256U (en) Edible mushroom cultivation uses intelligent cooling greenhouse
CN201533509U (en) Intelligent low-temperature grain storage automatic control system
CN101919330A (en) Automatic control system of intelligent low-temperature grain storage and control method thereof
CN105830819B (en) A kind of wet curtain fan positive draft circulation temperature lowering system and its segmented cooling method
CN203424072U (en) Intelligent edible mushroom house air conditioning unit
CN103718893B (en) Constant temperature planting greenhouse suitable for growth of funguses
CN104350981A (en) Intelligent temperature controlling device for vegetable greenhouse
CN205444603U (en) Biological decontamination system
CN205897383U (en) Greenhouse air dewetting economizer
WO2020260170A1 (en) Greenhouse
CN202842008U (en) Greenhouse humidity distribution and ventilation adjusting device
CN206713738U (en) A kind of livestock culturing field monitoring and regulating system
CN205052255U (en) Edible mushroom cultivation is with energy -conserving big -arch shelter of cooling
CN204742465U (en) Shine dry sunning equipment of convective heat transfer of blue or green unfinished tea
CN107817851A (en) A kind of control method of edible mushroom green house temperature-humidity
CN205052252U (en) Big -arch shelter for edible mushroom cultivation
CN204272824U (en) A kind of green house energy-saving temperature-control system
CN203633241U (en) Greenhouse cooling device
CN204285719U (en) A kind of Novel steam equipment room ventilation system
CN209992853U (en) Greenhouse temperature and humidity control device for planting butterfly orchid
CN106900565A (en) The temperature regulation structure of animal room
CN207075301U (en) Plant constant temperature system
CN202035339U (en) Heat exchange and ventilation system for greenhouse

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160302

Termination date: 20170930