CN114868568B - Greenhouse temperature adjusting device for indoor agricultural production - Google Patents
Greenhouse temperature adjusting device for indoor agricultural production Download PDFInfo
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- CN114868568B CN114868568B CN202210461865.2A CN202210461865A CN114868568B CN 114868568 B CN114868568 B CN 114868568B CN 202210461865 A CN202210461865 A CN 202210461865A CN 114868568 B CN114868568 B CN 114868568B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/245—Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/241—Arrangement of opening or closing systems for windows and ventilation panels
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention is suitable for the technical field of agricultural facilities, and provides a greenhouse temperature regulating device for indoor agricultural production, which comprises a piston block arranged in a heat exchange box in a lifting manner; the spiral elastic heat exchange coil is arranged in the heat exchange box, the top end of the spiral elastic heat exchange coil is integrally formed and communicated with an air inlet pipe, the air inlet pipe is fixedly and penetratingly arranged on a top plate of the heat exchange box, the bottom end of the spiral elastic heat exchange coil is integrally formed and communicated with an air outlet pipe, and the air outlet pipe is fixedly and penetratingly arranged on the piston block; the cylinder body is fixedly arranged at the bottom of the heat exchange box, the end part of the air outlet pipe stretches into the cylinder body in a sliding manner, and one side of the bottom of the cylinder body is provided with an air outlet pipe; and the water supply mechanism is used for supplying water into the heat exchange box. The invention can finely regulate and control the temperature of the agricultural greenhouse, further adjust the air outlet temperature of hot air, realize that the greenhouse is kept in a temperature range, and have better use effect.
Description
Technical Field
The invention belongs to the technical field of agricultural facilities, and particularly relates to a greenhouse temperature adjusting device for indoor agricultural production.
Background
The greenhouse agriculture is the agriculture operated in the artificial heat preservation facility, is a supplement to the traditional farmland, is divided into a glass greenhouse and a plastic greenhouse, is mainly used for super-season cultivation of vegetables, can be produced and supplied in winter and spring, and can obtain various agricultural products in cold areas by utilizing the greenhouse agriculture technology.
At present, a greenhouse is mostly designed to cover a bracket structure with a plastic film to form a closed heat-preserving space, and the indoor temperature is obtained by sunlight irradiation, which has the defects that the indoor temperature is too high in the greenhouse in summer and too low in winter, so that the growth of internal fruits and vegetables is seriously influenced, the income is influenced, and the production cost is greatly improved.
The utility model discloses an agricultural greenhouse temperature regulating device in patent document of publication number CN 109924041A, its structure includes agricultural greenhouse body, heating device, outlet pipe, water tank, water pump, drinking-water pipe, excess temperature protection device and temperature sensor, the inside both sides of agricultural greenhouse body are distributed there is heating device, the inboard top of agricultural greenhouse body is equipped with the outlet pipe, the bottom distribution of outlet pipe has the sprinkler mouth, the right part of outlet pipe is equipped with the water pump, the left side of water pump is equipped with the drinking-water pipe, the drinking-water pipe passes through the inside of pipe connection in the water tank, the inboard top of agricultural greenhouse body is distributed there is temperature sensor, the top left side of agricultural greenhouse body is equipped with excess temperature protection device.
The utility model discloses a warmhouse booth of adjustable temperature in again as disclosed in the patent document of publication number CN 211745682U, including the big-arch shelter main part, business turn over door, the fixed support column, the skeleton, the water storage tank, plant groove, the heat preservation membrane, the electric fan heater, the water storage tank is installed in big-arch shelter main part both sides, and driving motor is installed at the water storage tank top, and one side of water storage tank is provided with the water purification device, and the water pipe is carried the sprinkler bead of one end through the delivery pump, big-arch shelter main part upper portion both sides are provided with the rainwater collecting vat, be favorable to conveniently collecting the rainwater, and be equipped with the filter screen in the rainwater collecting vat, fixed support column upper portion both sides fixedly connected with skeleton, the heat preservation membrane is laid on the skeleton, be provided with the fly leaf in the middle of the big-arch shelter main part both sides, and be connected with electric putter on the fly leaf, solar panel is installed on the top of big-arch shelter main part.
As another example, a greenhouse temperature adjusting device for indoor agricultural production is disclosed in the patent document with publication number CN 210808514U, which comprises a supporting mechanism and a ventilation frame mechanism, the upper part of the supporting mechanism is provided with the ventilation frame mechanism, the ventilation frame mechanism comprises a main body shell, a ventilation panel, a fixing screw, a rubber pad, a fixing panel, a fixing ring, a micro motor, fan blades and a protection net, the inside ventilation panel that is provided with in the left end of the main body shell, the upper and lower both ends of the ventilation panel are all provided with the fixing screw.
However, in practical application, the temperature adjusting device provided by the scheme cannot finely adjust and control the temperature of the agricultural greenhouse, and only adopts a heat exchange mode to introduce hot air into the greenhouse, so that the air outlet temperature of the hot air cannot be further adjusted, the greenhouse is kept in a temperature range, and the temperature adjusting device has obvious limitation in use.
Disclosure of Invention
The invention aims to provide a greenhouse temperature regulating device for indoor agricultural production, and aims to solve the technical problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions.
A greenhouse temperature regulating device for indoor agricultural production, the regulating device comprises:
the lifting type heat exchange box comprises a piston block arranged in the heat exchange box, wherein the height of the piston block in the heat exchange box is adjusted through an electric telescopic rod, an electric heating plate is arranged on the piston block, and the electric heating plate is used for heating water in the heat exchange box;
the spiral elastic heat exchange coil is arranged in the heat exchange box, the top end of the spiral elastic heat exchange coil is integrally formed and communicated with an air inlet pipe, the air inlet pipe is fixedly and penetratingly arranged on a top plate of the heat exchange box, the bottom end of the spiral elastic heat exchange coil is integrally formed and communicated with an air outlet pipe, and the air outlet pipe is fixedly and penetratingly arranged on the piston block;
the cylinder body is fixedly arranged at the bottom of the heat exchange box, the end part of the air outlet pipe stretches into the cylinder body in a sliding manner, and one side of the bottom of the cylinder body is provided with an air outlet pipe;
and the water supply mechanism is used for supplying water into the heat exchange box.
In one embodiment of the present invention, a temperature sensor is further disposed on the exhaust pipe, and the temperature sensor is used for detecting the temperature of the air flow exhausted through the exhaust pipe; the heat exchange box is also provided with a controller for controlling the expansion of the electric telescopic rod, and a signal input end of the controller is electrically connected with the temperature sensor.
In one embodiment of the invention, the water supply mechanism comprises a first water tank arranged at one side of the heat exchange tank, the first water tank is communicated with the heat exchange tank through an upper water supply port and a lower water supply port respectively, water in the first water tank can enter the heat exchange tank through the upper water supply port, and water in the first water tank can also enter the heat exchange tank through the lower water supply port.
In one embodiment of the present invention, the water supply mechanism further includes a second water tank disposed at the other side of the heat exchange tank, wherein the bottom of the second water tank is lower than the bottom of the first water tank; the bottom of the second water tank is connected with the bottom of the first water tank through a circulating piece, and the circulating piece is used for circulating water at the bottom of the second water tank into the first water tank.
In one embodiment of the invention, the circulating member comprises a circulating pipe connected with the bottom of the second water tank, the other end of the circulating pipe is connected with an inlet of the water pump, an outlet of the water pump is provided with a backflow inlet pipe, the backflow inlet pipe is connected with the bottom of the first water tank, the circulating pipe is also provided with a one-way valve, after the water pump is started, water at the bottom of the second water tank is enabled to enter the first water tank in one direction through the one-way valve, and the water of the first water tank can be prevented from flowing back into the second water tank through the one-way valve because the bottom of the first water tank is higher than the bottom of the second water tank.
In one embodiment provided by the invention, a first baffle plate and a second baffle plate are respectively and fixedly arranged on two sides of the piston block, the first baffle plate corresponds to the first water tank, and the second baffle plate corresponds to the second water tank; the first baffle is provided with a first through hole, the second baffle is provided with a second through hole, and the second through hole is higher than the first through hole;
when the first through hole is aligned with the lower water supply port, the second through hole is aligned with the lower water discharge port;
when the first through hole is aligned with the upper water supply port, the second through hole is aligned with the upper water discharge port.
In one embodiment provided by the invention, the on-off between the top of the first water tank and the water supplementing tank is controlled through a water draining valve; the drain valve includes:
the circular pipe is communicated with the sewer pipe, the top end of the sewer pipe is connected with the water supplementing tank, and the bottom end of the sewer pipe is connected with the first water tank;
the annular blocking block is matched with the inner cavity of the annular pipe and is provided with a water through hole;
the floating ball is arranged on the liquid level in the first water tank, a rack is arranged on the floating ball through a vertical connecting rod in a supporting connection mode, the rack is linked with the annular blocking block, when the liquid level in the first water tank descends, the downward-moving rack drives the annular blocking block to rotate, the water through hole rotates and is in a conducting state with the sewer pipe, and at the moment, water in the water supplementing tank enters the first water tank through the sewer pipe and the water through hole.
In one embodiment provided by the invention, in order to realize linkage between the annular blocking block and the rack, the annular blocking block is coaxially and fixedly provided with the toothed ring meshed with the rack, so that when the rack moves downwards, the toothed ring is driven to rotate, namely the annular blocking block is driven to rotate in the annular pipe, and the water through hole can be communicated with the sewer pipe.
In one embodiment provided by the invention, the outer surface of the heat exchange box is also provided with a first heat insulation layer corresponding to the first water tank; the outer surface of the heat exchange box is also provided with a second heat insulation layer corresponding to the second water tank.
In one embodiment of the present invention, the second water tank is further provided with a liquid level sensor, and the liquid level sensor is electrically connected with the controller, and when the liquid level sensor detects that the liquid level in the second water tank reaches the position where the liquid level sensor is located, the controller is used for controlling the water pump to start, so that the liquid level in the second water tank is always kept lower than the level of the liquid level sensor.
Compared with the prior art, the greenhouse temperature adjusting device provided by the invention has the advantages that the piston block moves upwards in the heat exchange box by controlling the electric telescopic rod to extend, so that more spiral elastic heat exchange coils are positioned below the liquid level in the heat exchange box, the heat exchange area of the spiral elastic heat exchange coils is enlarged, and the temperature of air flow discharged through the exhaust pipe is higher; when the temperature sensor detects that the temperature of the exhaust air flow of the exhaust pipe is higher than a threshold value, the controller controls the electric telescopic rod to shorten, so that the piston block moves downwards, less spiral elastic heat exchange coils are positioned below the liquid level in the heat exchange box, the heat exchange area of the spiral elastic heat exchange coils is reduced, and the temperature of the air flow exhausted through the exhaust pipe is reduced. The invention can finely regulate and control the temperature of the agricultural greenhouse, further adjust the air outlet temperature of hot air, realize that the greenhouse is kept in a temperature range, and have better use effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
FIG. 1 is a schematic structural view of a greenhouse temperature regulating device for indoor agricultural production;
FIG. 2 is a schematic view of a partial enlarged structure at A in FIG. 1;
FIG. 3 is a schematic view of the internal structure of the heat exchange box provided by the invention;
FIG. 4 is a schematic diagram of the cooperation of the piston block and the baffle plate according to the present invention;
FIG. 5 is a schematic view of a spiral elastic heat exchange coil provided by the invention;
fig. 6 is a partially enlarged schematic structural view of fig. 3 at B.
In the accompanying drawings: 100. a heat exchange box; 101. a first insulating layer; 102. a vent hole; 103. a second insulating layer; 200. a water supplementing tank; 201. a water supply pipe; 202. a grommet; 203. an annular block; 204. a water through hole; 205. a toothed ring; 206. a rack; 207. a floating ball; 208. a vertical connecting rod; 300. a first water tank; 301. an upper water supply port; 302. a lower water supply port; 400. a second water tank; 401. an upper drain outlet; 402. a lower drain opening; 403. a liquid level sensor; 500. a water pump; 501. a circulation pipe; 502. a one-way valve; 503. reflux into the tube; 600. a cylinder; 601. an exhaust pipe; 602. a temperature sensor; 603. a controller; 604. an electric telescopic rod; 700. spiral elastic heat exchange coil; 701. an air inlet pipe; 702. an air outlet pipe; 800. a piston block; 801. a first baffle; 802. a second baffle; 803. a first through hole; 804. a second through hole; 805. an electric heating plate.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
As shown in fig. 1 and 5, in one embodiment provided by the present invention, a greenhouse temperature adjusting apparatus for indoor agricultural production, the adjusting apparatus includes:
the lifting type piston block 800 is arranged in the heat exchange box 100, the height of the piston block 800 in the heat exchange box 100 is adjusted through the electric telescopic rod 604, an electric heating plate 805 is arranged on the piston block 800, and the electric heating plate 805 is used for heating water in the heat exchange box 100;
the spiral elastic heat exchange coil 700 is arranged in the heat exchange box 100, an air inlet pipe 701 is integrally formed and communicated with the top end of the spiral elastic heat exchange coil 700, the air inlet pipe 701 is fixedly and penetratingly arranged on a top plate of the heat exchange box 100, an air outlet pipe 702 is integrally formed and communicated with the bottom end of the spiral elastic heat exchange coil 700, and the air outlet pipe 702 is fixedly and penetratingly arranged on the piston block 800;
the cylinder 600 is fixedly arranged at the bottom of the heat exchange box 100, the end part of the air outlet pipe 702 slides into the cylinder 600, and one side of the bottom of the cylinder 600 is provided with an air outlet pipe 601;
and a water supply mechanism for supplying water into the heat exchange box 100.
Therefore, in the specific implementation of the temperature adjusting device provided by the embodiment of the invention, after water is added into the heat exchange box 100 through the water supply mechanism, the water in the heat exchange box 100 is heated through the electric heating plate 805, air flow to be heated is blown into the spiral elastic heat exchange coil 700 through the air inlet pipe 701, the heated air flow enters the cylinder 600 through the air outlet pipe 702, and is finally discharged through the air outlet pipe 601, and the air temperature in the greenhouse is adjusted through the heated air flow.
It can be understood that, due to the existence of the liquid level in the heat exchange box 100, the heat exchange effect of the air flow in the spiral elastic heat exchange coil 700 positioned under the water in the heat exchange box 100 is good, and the heat exchange of the air flow in the spiral elastic heat exchange coil 700 is mainly concentrated on the underwater part in the heat exchange box 100; therefore, when the temperature of the air flow discharged through the exhaust pipe 601 needs to be increased, only the expansion and contraction of the electric expansion rod 604 needs to be controlled, so that the piston block 800 moves up in the heat exchange box 100, at this time, the spiral elastic heat exchange coil 700 is compressed, and at the same time, the liquid level in the heat exchange box 100 is raised, so that, when the spiral elastic heat exchange coil 700 is compressed, under the same liquid level, more spiral elastic heat exchange coils 700 are positioned below the liquid level in the heat exchange box 100, so that the heat exchange area of the spiral elastic heat exchange coils 700 becomes larger, and the temperature of the air flow discharged through the exhaust pipe 601 can be higher.
With continued reference to fig. 1, 3 and 6, in an embodiment of the present invention, a temperature sensor 602 is further disposed on the exhaust pipe 601, and the temperature sensor 602 is configured to detect a temperature of the air flow exhausted through the exhaust pipe 601; the heat exchange box 100 is further provided with a controller 603 for controlling the expansion and contraction of the electric telescopic rod 604, a signal input end of the controller 603 is electrically connected with the temperature sensor 602, when the temperature sensor 602 detects that the temperature of the air flow discharged by the exhaust pipe 601 is lower than a threshold value, the controller 603 controls the electric telescopic rod 604 to stretch, so that the piston block 800 moves upwards in the heat exchange box 100, more spiral elastic heat exchange coils 700 are positioned below the liquid level in the heat exchange box 100, the heat exchange area of the spiral elastic heat exchange coils 700 is enlarged, and the temperature of the air flow discharged by the exhaust pipe 601 can be higher; conversely, when the temperature sensor 602 detects that the temperature of the air flow discharged from the exhaust pipe 601 is higher than the threshold value, the controller 603 controls the electric telescopic rod 604 to shorten, so that the piston block 800 moves down, and less spiral elastic heat exchange coil 700 is located below the liquid level in the heat exchange box 100, so that the heat exchange area of the spiral elastic heat exchange coil 700 becomes smaller, and further, the temperature of the air flow discharged from the exhaust pipe 601 becomes lower.
Example 2
As shown in fig. 1 and 5, in one embodiment provided by the present invention, a greenhouse temperature adjusting apparatus for indoor agricultural production, the adjusting apparatus includes:
the lifting type piston block 800 is arranged in the heat exchange box 100, the height of the piston block 800 in the heat exchange box 100 is adjusted through the electric telescopic rod 604, an electric heating plate 805 is arranged on the piston block 800, and the electric heating plate 805 is used for heating water in the heat exchange box 100;
the spiral elastic heat exchange coil 700 is arranged in the heat exchange box 100, an air inlet pipe 701 is integrally formed and communicated with the top end of the spiral elastic heat exchange coil 700, the air inlet pipe 701 is fixedly and penetratingly arranged on a top plate of the heat exchange box 100, an air outlet pipe 702 is integrally formed and communicated with the bottom end of the spiral elastic heat exchange coil 700, and the air outlet pipe 702 is fixedly and penetratingly arranged on the piston block 800;
the cylinder 600 is fixedly arranged at the bottom of the heat exchange box 100, the end part of the air outlet pipe 702 slides into the cylinder 600, and one side of the bottom of the cylinder 600 is provided with an air outlet pipe 601;
and a water supply mechanism for supplying water into the heat exchange box 100.
Therefore, in the specific implementation of the temperature adjusting device provided by the embodiment of the invention, after water is added into the heat exchange box 100 through the water supply mechanism, the water in the heat exchange box 100 is heated through the electric heating plate 805, air flow to be heated is blown into the spiral elastic heat exchange coil 700 through the air inlet pipe 701, the heated air flow enters the cylinder 600 through the air outlet pipe 702, and is finally discharged through the air outlet pipe 601, and the air temperature in the greenhouse is adjusted through the heated air flow.
It can be understood that, due to the existence of the liquid level in the heat exchange box 100, the heat exchange effect of the air flow in the spiral elastic heat exchange coil 700 positioned under the water in the heat exchange box 100 is good, and the heat exchange of the air flow in the spiral elastic heat exchange coil 700 is mainly concentrated on the underwater part in the heat exchange box 100; therefore, when the temperature of the air flow discharged through the exhaust pipe 601 needs to be increased, only the expansion and contraction of the electric expansion rod 604 needs to be controlled, so that the piston block 800 moves up in the heat exchange box 100, at this time, the spiral elastic heat exchange coil 700 is compressed, and at the same time, the liquid level in the heat exchange box 100 is raised, so that, when the spiral elastic heat exchange coil 700 is compressed, under the same liquid level, more spiral elastic heat exchange coils 700 are positioned below the liquid level in the heat exchange box 100, so that the heat exchange area of the spiral elastic heat exchange coils 700 becomes larger, and the temperature of the air flow discharged through the exhaust pipe 601 can be higher.
With continued reference to fig. 1, 3 and 6, in an embodiment of the present invention, a temperature sensor 602 is further disposed on the exhaust pipe 601, and the temperature sensor 602 is configured to detect a temperature of the air flow exhausted through the exhaust pipe 601; the heat exchange box 100 is further provided with a controller 603 for controlling the expansion and contraction of the electric telescopic rod 604, a signal input end of the controller 603 is electrically connected with the temperature sensor 602, when the temperature sensor 602 detects that the temperature of the air flow discharged by the exhaust pipe 601 is lower than a threshold value, the controller 603 controls the electric telescopic rod 604 to stretch, so that the piston block 800 moves upwards in the heat exchange box 100, more spiral elastic heat exchange coils 700 are positioned below the liquid level in the heat exchange box 100, the heat exchange area of the spiral elastic heat exchange coils 700 is enlarged, and the temperature of the air flow discharged by the exhaust pipe 601 can be higher; conversely, when the temperature sensor 602 detects that the temperature of the air flow discharged from the exhaust pipe 601 is higher than the threshold value, the controller 603 controls the electric telescopic rod 604 to shorten, so that the piston block 800 moves down, and less spiral elastic heat exchange coil 700 is located below the liquid level in the heat exchange box 100, so that the heat exchange area of the spiral elastic heat exchange coil 700 becomes smaller, and further, the temperature of the air flow discharged from the exhaust pipe 601 becomes lower.
As shown in fig. 1, 3 and 4, in the preferred embodiment of the present invention, the water supply mechanism includes a first water tank 300 disposed at one side of the heat exchange tank 100, the first water tank 300 is respectively communicated with the heat exchange tank 100 through an upper water supply port 301 and a lower water supply port 302, water in the first water tank 300 can enter the heat exchange tank 100 through the upper water supply port 301, and water in the first water tank 300 can also enter the heat exchange tank 100 through the lower water supply port 302.
Further, in the embodiment of the present invention, the water supply mechanism further includes a second water tank 400 disposed at the other side of the heat exchange tank 100, and the bottom of the second water tank 400 is lower than the bottom of the first water tank 300; the bottom of the second water tank 400 is connected with the bottom of the first water tank 300 through a circulation member, and the circulation member is used for circulating water at the bottom of the second water tank 400 into the first water tank 300.
As shown in fig. 1, in the embodiment of the present invention, the circulation member includes a circulation pipe 501 connected to the bottom of the second water tank 400, the other end of the circulation pipe 501 is connected to an inlet of the water pump 500, an outlet of the water pump 500 is provided with a return inlet pipe 503, the return inlet pipe 503 is connected to the bottom of the first water tank 300, and a check valve 502 is further provided on the circulation pipe 501, so that after the water pump 500 is started, water at the bottom of the second water tank 400 is unidirectionally introduced into the first water tank 300, and since the bottom of the first water tank 300 is higher than the bottom of the second water tank 400, the water of the first water tank 300 can be prevented from flowing back into the second water tank 400 by the check valve 502.
Further, in the embodiment of the present invention, a first baffle 801 and a second baffle 802 are fixedly installed on two sides of the piston block 800, where the first baffle 801 corresponds to the first water tank 300, and the second baffle 802 corresponds to the second water tank 400; the first baffle 801 is provided with a first through hole 803, the second baffle 802 is provided with a second through hole 804, and the second through hole 804 is higher than the first through hole 803;
in one state, when the first through hole 803 is aligned with the lower water supply port 302, the second through hole 804 is aligned with the lower water discharge port 402;
in another state, when the first through hole 803 is aligned with the upper water supply port 301, the second through hole 804 is aligned with the upper water discharge port 401.
It can be appreciated that in the implementation of the embodiment of the present invention, the heating of the water in the heat exchange tank 100 by the electric heating plate 805 may result in steam generation, so that the water in the heat exchange tank 100 becomes less after a period of use; therefore, by controlling the expansion and contraction of the electric expansion and contraction rod 604, the piston block 800 is moved upwards, when the first through hole 803 is aligned with the lower water supply port 302, the second through hole 804 is aligned with the lower water discharge port 402, in this state, the water in the first water tank 300 flows into the heat exchange tank 100 through the lower water supply port 302 and the first through hole 803, and the water in the heat exchange tank 100 is discharged through the second through hole 804 and the lower water discharge port 402, and at this time, the liquid level in the heat exchange tank 100 is the position of the second through hole 804; correspondingly, when the first through hole 803 is aligned with the upper water supply port 301, the second through hole 804 is aligned with the upper water discharge port 401, the liquid level in the heat exchange box 100 is still the reference of the piston block 800, and the liquid level is flush with the second through hole 804, so that the liquid level in the heat exchange box 100 can be kept at the original position in the water supplementing state; when the first through hole 803 is staggered with the upper water supply port 301 and the lower water supply port 302, the second through hole 804 is also kept staggered with the upper water discharge port 401 and the lower water discharge port 402, and at this time, the liquid level in the heat exchange box 100 is in a closed state, and in this state, the heating of the water in the heat exchange box 100 is restarted by the electric heating plate 805;
therefore, only when the liquid level needs to be replenished, when the first through hole 803 is aligned with the upper water supply port 301 or the lower water supply port 302, the temperature of the air flow discharged through the air exhaust pipe 601 can be controlled by adjusting the position of the piston block 800 in the heat exchange box 100 in other states, so that the temperature of the greenhouse can be adjusted.
With continued reference to fig. 1 and 3, in the embodiment of the present invention, the top of the heat exchange tank 100 has a vent 102, so as to balance the air pressure in the heat exchange tank 100, and avoid the pressure in the heat exchange tank 100 from becoming large when the electric heating plate 805 heats the water in the heat exchange tank 100.
Example 3
As shown in fig. 1 and 5, in one embodiment provided by the present invention, a greenhouse temperature adjusting apparatus for indoor agricultural production, the adjusting apparatus includes:
the lifting type piston block 800 is arranged in the heat exchange box 100, the height of the piston block 800 in the heat exchange box 100 is adjusted through the electric telescopic rod 604, an electric heating plate 805 is arranged on the piston block 800, and the electric heating plate 805 is used for heating water in the heat exchange box 100;
the spiral elastic heat exchange coil 700 is arranged in the heat exchange box 100, an air inlet pipe 701 is integrally formed and communicated with the top end of the spiral elastic heat exchange coil 700, the air inlet pipe 701 is fixedly and penetratingly arranged on a top plate of the heat exchange box 100, an air outlet pipe 702 is integrally formed and communicated with the bottom end of the spiral elastic heat exchange coil 700, and the air outlet pipe 702 is fixedly and penetratingly arranged on the piston block 800;
the cylinder 600 is fixedly arranged at the bottom of the heat exchange box 100, the end part of the air outlet pipe 702 slides into the cylinder 600, and one side of the bottom of the cylinder 600 is provided with an air outlet pipe 601;
and a water supply mechanism for supplying water into the heat exchange box 100.
Therefore, in the specific implementation of the temperature adjusting device provided by the embodiment of the invention, after water is added into the heat exchange box 100 through the water supply mechanism, the water in the heat exchange box 100 is heated through the electric heating plate 805, air flow to be heated is blown into the spiral elastic heat exchange coil 700 through the air inlet pipe 701, the heated air flow enters the cylinder 600 through the air outlet pipe 702, and is finally discharged through the air outlet pipe 601, and the air temperature in the greenhouse is adjusted through the heated air flow.
It can be understood that, due to the existence of the liquid level in the heat exchange box 100, the heat exchange effect of the air flow in the spiral elastic heat exchange coil 700 positioned under the water in the heat exchange box 100 is good, and the heat exchange of the air flow in the spiral elastic heat exchange coil 700 is mainly concentrated on the underwater part in the heat exchange box 100; therefore, when the temperature of the air flow discharged through the exhaust pipe 601 needs to be increased, only the expansion and contraction of the electric expansion rod 604 needs to be controlled, so that the piston block 800 moves up in the heat exchange box 100, at this time, the spiral elastic heat exchange coil 700 is compressed, and at the same time, the liquid level in the heat exchange box 100 is raised, so that, when the spiral elastic heat exchange coil 700 is compressed, under the same liquid level, more spiral elastic heat exchange coils 700 are positioned below the liquid level in the heat exchange box 100, so that the heat exchange area of the spiral elastic heat exchange coils 700 becomes larger, and the temperature of the air flow discharged through the exhaust pipe 601 can be higher.
With continued reference to fig. 1, 3 and 6, in an embodiment of the present invention, a temperature sensor 602 is further disposed on the exhaust pipe 601, and the temperature sensor 602 is configured to detect a temperature of the air flow exhausted through the exhaust pipe 601; the heat exchange box 100 is further provided with a controller 603 for controlling the expansion and contraction of the electric telescopic rod 604, a signal input end of the controller 603 is electrically connected with the temperature sensor 602, when the temperature sensor 602 detects that the temperature of the air flow discharged by the exhaust pipe 601 is lower than a threshold value, the controller 603 controls the electric telescopic rod 604 to stretch, so that the piston block 800 moves upwards in the heat exchange box 100, more spiral elastic heat exchange coils 700 are positioned below the liquid level in the heat exchange box 100, the heat exchange area of the spiral elastic heat exchange coils 700 is enlarged, and the temperature of the air flow discharged by the exhaust pipe 601 can be higher; conversely, when the temperature sensor 602 detects that the temperature of the air flow discharged from the exhaust pipe 601 is higher than the threshold value, the controller 603 controls the electric telescopic rod 604 to shorten, so that the piston block 800 moves down, and less spiral elastic heat exchange coil 700 is located below the liquid level in the heat exchange box 100, so that the heat exchange area of the spiral elastic heat exchange coil 700 becomes smaller, and further, the temperature of the air flow discharged from the exhaust pipe 601 becomes lower.
As shown in fig. 1, 3 and 4, in the preferred embodiment of the present invention, the water supply mechanism includes a first water tank 300 disposed at one side of the heat exchange tank 100, the first water tank 300 is respectively communicated with the heat exchange tank 100 through an upper water supply port 301 and a lower water supply port 302, water in the first water tank 300 can enter the heat exchange tank 100 through the upper water supply port 301, and water in the first water tank 300 can also enter the heat exchange tank 100 through the lower water supply port 302.
Further, in the embodiment of the present invention, the water supply mechanism further includes a second water tank 400 disposed at the other side of the heat exchange tank 100, and the bottom of the second water tank 400 is lower than the bottom of the first water tank 300; the bottom of the second water tank 400 is connected with the bottom of the first water tank 300 through a circulation member, and the circulation member is used for circulating water at the bottom of the second water tank 400 into the first water tank 300.
As shown in fig. 1, in the embodiment of the present invention, the circulation member includes a circulation pipe 501 connected to the bottom of the second water tank 400, the other end of the circulation pipe 501 is connected to an inlet of the water pump 500, an outlet of the water pump 500 is provided with a return inlet pipe 503, the return inlet pipe 503 is connected to the bottom of the first water tank 300, and a check valve 502 is further provided on the circulation pipe 501, so that after the water pump 500 is started, water at the bottom of the second water tank 400 is unidirectionally introduced into the first water tank 300, and since the bottom of the first water tank 300 is higher than the bottom of the second water tank 400, the water of the first water tank 300 can be prevented from flowing back into the second water tank 400 by the check valve 502.
Further, in the embodiment of the present invention, a first baffle 801 and a second baffle 802 are fixedly installed on two sides of the piston block 800, where the first baffle 801 corresponds to the first water tank 300, and the second baffle 802 corresponds to the second water tank 400; the first baffle 801 is provided with a first through hole 803, the second baffle 802 is provided with a second through hole 804, and the second through hole 804 is higher than the first through hole 803;
in one state, when the first through hole 803 is aligned with the lower water supply port 302, the second through hole 804 is aligned with the lower water discharge port 402;
in another state, when the first through hole 803 is aligned with the upper water supply port 301, the second through hole 804 is aligned with the upper water discharge port 401.
It can be appreciated that in the implementation of the embodiment of the present invention, the heating of the water in the heat exchange tank 100 by the electric heating plate 805 may result in steam generation, so that the water in the heat exchange tank 100 becomes less after a period of use; therefore, by controlling the expansion and contraction of the electric expansion and contraction rod 604, the piston block 800 is moved upwards, when the first through hole 803 is aligned with the lower water supply port 302, the second through hole 804 is aligned with the lower water discharge port 402, in this state, the water in the first water tank 300 flows into the heat exchange tank 100 through the lower water supply port 302 and the first through hole 803, and the water in the heat exchange tank 100 is discharged through the second through hole 804 and the lower water discharge port 402, and at this time, the liquid level in the heat exchange tank 100 is the position of the second through hole 804; correspondingly, when the first through hole 803 is aligned with the upper water supply port 301, the second through hole 804 is aligned with the upper water discharge port 401, the liquid level in the heat exchange box 100 is still the reference of the piston block 800, and the liquid level is flush with the second through hole 804, so that the liquid level in the heat exchange box 100 can be kept at the original position in the water supplementing state; when the first through hole 803 is staggered with the upper water supply port 301 and the lower water supply port 302, the second through hole 804 is also kept staggered with the upper water discharge port 401 and the lower water discharge port 402, and at this time, the liquid level in the heat exchange box 100 is in a closed state, and in this state, the heating of the water in the heat exchange box 100 is restarted by the electric heating plate 805;
therefore, only when the liquid level needs to be replenished, when the first through hole 803 is aligned with the upper water supply port 301 or the lower water supply port 302, the temperature of the air flow discharged through the air exhaust pipe 601 can be controlled by adjusting the position of the piston block 800 in the heat exchange box 100 in other states, so that the temperature of the greenhouse can be adjusted.
With continued reference to fig. 1 and 3, in the embodiment of the present invention, the top of the heat exchange tank 100 has a vent 102, so as to balance the air pressure in the heat exchange tank 100, and avoid the pressure in the heat exchange tank 100 from becoming large when the electric heating plate 805 heats the water in the heat exchange tank 100.
As shown in fig. 1-2, in the embodiment of the present invention, the on-off between the top of the first tank 300 and the water replenishing tank 200 is also controlled by a drain valve.
Specifically, in an embodiment of the present invention, the drain valve includes:
a ring pipe 202 which is communicated with the sewer pipe 201, wherein the top end of the sewer pipe 201 is connected with the water replenishing tank 200, and the bottom end of the sewer pipe 201 is connected with the first water tank 300;
an annular blocking block 203 matched with the inner cavity of the annular pipe 202, wherein the annular blocking block 203 is provided with a water through hole 204;
the floating ball 207 is arranged on the liquid level in the first water tank 300, the floating ball 207 is connected with a rack 206 through a vertical connecting rod 208 in a supporting manner, the rack 206 is linked with the annular blocking block 203, when the liquid level in the first water tank 300 descends, the downward-moving rack 206 drives the annular blocking block 203 to rotate, the water through hole 204 rotates and is in a conducting state with the sewer pipe 201, and at the moment, water in the water supplementing tank 200 enters the first water tank 300 through the sewer pipe 201 and the water through hole 204.
In order to realize the linkage between the annular blocking block 203 and the rack 206, the annular blocking block 203 is coaxially and fixedly provided with a toothed ring 205 meshed with the rack 206, so that when the rack 206 moves downwards, the toothed ring 205 is driven to rotate, that is, the annular blocking block 203 is driven to rotate in the annular pipe 202, and the water through hole 204 can be communicated with the sewer pipe 201.
Preferably, in the embodiment of the present invention, the outer surface of the heat exchange box 100 is further provided with a first heat insulation layer 101 corresponding to the first water tank 300; the outer surface of the heat exchange box 100 is further provided with a second heat insulation layer 103 corresponding to the second water tank 400.
Preferably, in this embodiment of the present invention, the second water tank 400 is further provided with a liquid level sensor 403, and the liquid level sensor 403 is electrically connected to the controller 603, and when the liquid level sensor 403 detects that the liquid level in the second water tank 400 reaches the position where the liquid level sensor 403 is located, the controller 603 is used to control the water pump 500 to start, so that the liquid level in the second water tank 400 is always kept lower than the level of the liquid level sensor 403.
The above embodiments are merely illustrative of a preferred embodiment, but are not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. Greenhouse temperature adjusting device for indoor agricultural production, characterized by comprising:
the lifting type heat exchange box comprises a piston block arranged in the heat exchange box, wherein the height of the piston block in the heat exchange box is adjusted through an electric telescopic rod, an electric heating plate is arranged on the piston block, and the electric heating plate is used for heating water in the heat exchange box;
the spiral elastic heat exchange coil is arranged in the heat exchange box, the top end of the spiral elastic heat exchange coil is integrally formed and communicated with an air inlet pipe, the air inlet pipe is fixedly and penetratingly arranged on a top plate of the heat exchange box, the bottom end of the spiral elastic heat exchange coil is integrally formed and communicated with an air outlet pipe, and the air outlet pipe is fixedly and penetratingly arranged on the piston block;
the cylinder body is fixedly arranged at the bottom of the heat exchange box, the end part of the air outlet pipe stretches into the cylinder body in a sliding manner, and one side of the bottom of the cylinder body is provided with an air outlet pipe;
and the water supply mechanism is used for supplying water into the heat exchange box.
2. The greenhouse temperature adjustment device for indoor agricultural production according to claim 1, wherein a temperature sensor for detecting the temperature of the air flow discharged through the exhaust pipe is further provided on the exhaust pipe; the heat exchange box is also provided with a controller for controlling the expansion of the electric telescopic rod, and a signal input end of the controller is electrically connected with the temperature sensor.
3. The greenhouse temperature adjusting device for indoor agricultural production according to claim 2, wherein the water supply mechanism comprises a first water tank arranged on one side of the heat exchange tank, and the first water tank is communicated with the heat exchange tank through an upper water supply port and a lower water supply port respectively.
4. The greenhouse temperature adjusting apparatus for indoor agricultural production according to claim 3, wherein the water supply mechanism further comprises a second water tank provided at the other side of the heat exchange tank, the bottom of the second water tank being lower than the bottom of the first water tank; the bottom of the second water tank is connected with the bottom of the first water tank through a circulating piece, and the circulating piece is used for circulating water at the bottom of the second water tank into the first water tank.
5. The greenhouse temperature adjusting device for indoor agricultural production according to claim 4, wherein the circulating member comprises a circulating pipe connected with the bottom of the second water tank, the other end of the circulating pipe is connected with an inlet of a water pump, an outlet of the water pump is provided with a backflow inlet pipe, the backflow inlet pipe is connected with the bottom of the first water tank, and a one-way valve is further arranged on the circulating pipe.
6. The greenhouse temperature adjusting apparatus for indoor agricultural production according to claim 4 or 5, wherein a first baffle plate and a second baffle plate are fixedly installed at both sides of the piston block, respectively, the first baffle plate corresponds to the first water tank, and the second baffle plate corresponds to the second water tank; the first baffle is provided with a first through hole, the second baffle is provided with a second through hole, and the second through hole is higher than the first through hole;
when the first through hole is aligned with the lower water supply port, the second through hole is aligned with the lower water discharge port;
when the first through hole is aligned with the upper water supply port, the second through hole is aligned with the upper water discharge port.
7. The greenhouse temperature adjusting device for indoor agricultural production according to claim 4, wherein the on-off between the top of the first water tank and the water supplementing tank is controlled through a water draining valve;
the drain valve includes:
the circular pipe is communicated with the sewer pipe, the top end of the sewer pipe is connected with the water supplementing tank, and the bottom end of the sewer pipe is connected with the first water tank;
the annular blocking block is matched with the inner cavity of the annular pipe and is provided with a water through hole;
the floating ball is arranged on the liquid level in the first water tank, a rack is connected to the floating ball through a vertical connecting rod in a supporting mode, and the rack is in linkage with the annular blocking block.
8. The greenhouse temperature adjusting apparatus for indoor agricultural production according to claim 7, wherein the annular block is coaxially and fixedly provided with a toothed ring engaged with the rack.
9. The greenhouse temperature adjusting apparatus for indoor agricultural production according to claim 6, wherein the heat exchanging box is further provided with a first heat insulating layer on an outer surface thereof corresponding to the first water tank; the outer surface of the heat exchange box is also provided with a second heat insulation layer corresponding to the second water tank.
10. The greenhouse temperature adjusting apparatus for indoor agricultural production according to claim 8, wherein the second water tank is further provided with a liquid level sensor electrically connected to the controller.
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