Round-table-shaped piston electric switch type active ventilation opening

Abstract

The utility model provides a circular-truncated-cone-shaped piston electric switch type active ventilation opening, and belongs to the technical field of ventilation opening equipment. The in-wall ventilation pipeline is in a big-end-down circular truncated cone shape and is made of a polypropylene plastic plate or glass fiber reinforced plastic; the fan communicates with the outer side of the ventilation pipeline in the wall body and is located outdoors; the piston is in a big-end-down circular truncated cone shape matched with the ventilation pipeline in the wall body, is located indoors and is used for improving the sealing performance between the piston and the ventilation pipeline in the wall body; and the driving device is used for driving the piston to axially move along the ventilation pipeline in the wall body. The fan is arranged outside, the piston is arranged indoors, the piston moves from bottom to top to achieve extrusion type sealing, the ventilation pipeline in the wall is made of polypropylene plastic plates or glass fiber reinforced plastics, the service life of the fan can be prolonged, the piston is prevented from being quickly frozen under the conditions of cold and high humidity, heat conduction is reduced, and the service life of the fan is prolonged. And the adhesion phenomenon of the piston and the iron ventilation pipe wall during pre-cooling and wetting is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vent equipment, in particular to a truncated cone piston electric switch type active vent. Background Art

[0002] Currently, ventilation is required in facilities and building structures used in all industries, including industry, agriculture, and public utilities. Agricultural facilities require ventilation and air exchange in particular to adjust the humidity and temperature in the facilities, eliminate harmful gases, and adjust indoor air indicators.

[0003] At present, there are many types of indoor vent designs, most of which are window-type, membrane-drawn slit-type, and there are also cylindrical piston-type vents, which mainly rely on natural convection ventilation of wind and power switches or openings, or fans blow pistons to complete the vent opening and closing. Therefore, there are problems such as poor closure of the vents, cold bridges, and poor thermal insulation.

[0004] In the prior art, a utility model patent with announcement number CN207612771U discloses an automatic ventilation control system for a cold-region solar energy-saving greenhouse, which comprises: a plurality of ventilation devices and transmission devices fixed on the greenhouse ceiling, wherein the plurality of ventilation devices are respectively connected to the transmission devices, and the ventilation device comprises a ventilation cylinder whose lower part is embedded in the interior of the greenhouse ceiling, the lower part of the ventilation cylinder is fixedly connected to the circulating fan through a fixing plate, a ventilation grille is arranged between the upper and lower parts of the ventilation cylinder, a piston matching the ventilation grille is arranged in the ventilation grille, the upper end of the piston is fixedly connected to the rack, and a rain cap is installed on the upper part of the rack.

[0005] The utility model has the following defects:

[0006] 1) The piston is set outdoors and moves from top to bottom. In winter, when the temperature is low, the piston will freeze quickly under cold and humid conditions, affecting the use effect;

[0007] 2) The fan is placed indoors and is exposed to high humidity for a long time, which reduces the service life of the fan;

[0008] 3) The ventilation duct is made of stainless steel or other iron products with high thermal conductivity, which makes it easy for the piston to stick to the iron ventilation duct wall when it is pre-cooled and moist.

[0009] 4) The difference between the upper and lower sections of the ventilation duct is small, which generates large friction and increases the friction of the piston movement. Utility Model Content

[0010] In view of this, in order to solve the above-mentioned deficiencies in the prior art, the utility model provides a truncated cone-shaped piston electric switch type active vent, which is closed by setting the fan outside and the piston indoors, and the piston moves from bottom to top. The ventilation duct made of polypropylene plastic plate or fiberglass can increase the service life of the fan, avoid the phenomenon that the piston will freeze quickly under cold and humid conditions in winter, reduce heat conduction, and prevent the piston from sticking to the iron ventilation pipe wall when it is pre-cooled and wet. Increase the gap between the upper and lower sections of the ventilation duct, and at the same time increase the gap between the upper and lower sections of the piston to reduce friction during movement.

[0011] In order to achieve the above-mentioned contents, the utility model provides the following technical solutions:

[0012] Frustum-conical piston electrically switched active vents, including:

[0013] The ventilation duct is in the shape of a cone with a small top and a large bottom. It is used to be installed in the wall. Its material is polypropylene plastic plate or fiberglass. The height depends on the thickness of the wall.

[0014] A fan connected to the outside of the ventilation duct and located outdoors;

[0015] The piston has a truncated cone shape that is small at the top and large at the bottom and is adapted to the ventilation duct, and is located indoors to improve the sealing performance between the piston and the ventilation duct. The piston is made of extruded board or polyurethane board material, and the height is determined according to the wall thickness and the height of the ventilation duct;

[0016] A driving device is used to drive the piston to move axially along the ventilation duct.

[0017] Preferably, the driving device comprises:

[0018] A support assembly, which is arranged inside the ventilation duct and located on one side of the room, and is fixedly connected to the ventilation duct;

[0019] A motor, which is fixed on the supporting assembly;

[0020] A gear, which is arranged on the rotating rod of the motor;

[0021] a rack, which is disposed on the support assembly and meshes with the rack;

[0022] One end of the rack is connected to the piston, and the motor drives the gear to drive the rack and the piston to move.

[0023] Preferably, the support assembly comprises:

[0024] Four vertical rods, which are evenly distributed and fixedly connected to the inner side of the ventilation duct, and are fixedly connected by four evenly distributed supporting vertical rods;

[0025] A transverse fixing rod is installed at the lower part of the vertical rod and is used to fix the motor and ensure the stable movement of the rack.

[0026] Preferably, the power of the fan is 220v, 120w, and the parameters can be adjusted according to the indoor space conditions.

[0027] Preferably, the ventilation duct and the piston are both isosceles frustum-shaped.

[0028] Preferably, the outer cross-section diameter of the ventilation duct is 35-50 cm, and the inner cross-section diameter is 20 cm larger than the upper cross-section. The parameters can be adjusted according to actual conditions.

[0029] Preferably, the inner side and the outer side of the ventilation duct are both 3-5 cm higher than the inner side and the outer side of the wall.

[0030] Preferably, the diameter of the fan is the same as the diameter of the outer side of the ventilation duct.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] The utility model provides a truncated cone-shaped piston electric switch type active vent, which realizes extrusion-type closure by arranging the fan outside and the piston indoors, and the piston moves from bottom to top. The ventilation duct is made of polypropylene plastic plate or fiberglass, which can increase the service life of the fan, avoid the phenomenon that the piston will freeze quickly under cold and humid conditions at low temperatures in winter, reduce heat conduction, prevent the piston from sticking to the iron ventilation duct wall when it is pre-cooled and wet, and reduce friction when the piston moves.

[0033] The utility model adopts piston extrusion type electric control, can use multiple ventilation holes at the same time, is easy to operate and reduces labor.

[0034] The utility model forms an extrusion type closure by a piston. The piston is made of a material with good heat preservation effect and certain elasticity, such as an extruded plastic board or a polyurethane board, and is truncated into a cone shape, similar to a bottle stopper structure. When in the extrusion state, a full closure is formed to improve the indoor heat preservation effect.

[0035] The utility model has a simple structure and can be conveniently disassembled and maintained.

[0036] The ventilation volume and ventilation speed of the fan installed in the utility model can be adjusted, and the speed of the fan can be adjusted by controlling the switch according to the different volumes of indoor rooms and the weather in different regions, so as to complete the function of indoor air intake or outdoor air exhaust.

[0037] The utility model can also cooperate with the Internet of Things monitoring system to achieve full automatic control.

[0038] The manufacturing cost of the utility model is low, and does not affect the substantial increase in the construction cost of the facility.

[0039] The utility model is active ventilation, which can reduce or increase indoor temperature and humidity and balance the carbon dioxide concentration.

[0040] The utility model is applied in agricultural facilities to improve the fruit setting rate, increase the yield, reduce the cost of artificial pollination, supplement carbon dioxide, adjust the indoor humidity and temperature, reduce the occurrence of pests and diseases, and enhance the stress resistance of plants. It has strong airtightness, increases the temperature in the greenhouse by 2-3 degrees Celsius in winter and spring, and improves the performance of the greenhouse.

[0041] The utility model has strong airtightness when used in public facilities, sports facilities, schools, factory workshops, agricultural breeding greenhouse facilities, and planting facilities and equipment for agricultural planting applications, which require ventilation. It can quickly ventilate, balance indoor air indicators, adjust humidity, and cool down in summer. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the utility model;

[0043] In the figure, 1, ventilation duct; 2, wall; 3, fan; 4, piston; 5, driving device; 51, supporting assembly; 52, gear; 53, rack. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] like Figure 1 As shown, the utility model provides a truncated cone piston 4 electric switch type active vent, the location of which can be designed and placed according to the use function of the facility. For example, a solar greenhouse used for agricultural planting or breeding can be arranged on the slope of the top of the rear wall and set vertically. Factory buildings or facilities for special applications can be designed according to aesthetics and performance and can be installed horizontally. The number of vents to be installed can be calculated based on the size of the indoor space and the exhaust volume of the fan 3. It includes:

[0048] The ventilation duct 1 is in the shape of a truncated cone with a small top and a large bottom, and is used to be installed in a wall 2. The material of the truncated cone-shaped ventilation duct 1 is a polypropylene plastic plate or a fiberglass reinforced plastic. The diameter of the structure of the truncated cone-shaped ventilation duct 1 can be designed according to needs, and is calculated according to manufacturing cost and performance. It is a truncated cone with a small top and a large bottom (a truncated cone with a small outside and a large inside). Usually, the diameter of the outer cross-section is 35-50 cm, and the diameter of the inner cross-section is preferably 20 cm larger than the upper cross-section. When the difference between the inner and outer cross-sections is small, friction will increase and the running resistance will be large. When the difference between the inner and outer cross-sections is too large, the operation and use effect will be affected. The parameters can be appropriately adjusted according to actual conditions.

[0049] The material of the ventilation duct 1 is preferably a polypropylene plastic material plate or a glass fiber reinforced plastic material shaped into a truncated cone-shaped cylinder, the inner surface in contact with the piston 4 is smooth, and the plate thickness is preferably 5-8 mm. A thin plate thickness is easy to deform, and a thick plate thickness increases the manufacturing cost; it is preferably located in the insulation wall 2, penetrates the insulation wall 2, and is placed vertically in the longitudinal direction. Its inner and outer sides are 3-5 cm higher than the inner and outer sides of the wall 2. Its overall height is determined by the thickness of the insulation wall 2, and is generally 6-10 cm greater than the thickness of the wall 2. The parameters can be adjusted according to actual conditions.

[0050] The fan 3 is connected to the outside of the ventilation duct 1 and is located outdoors. It can be a molded product purchased on the market. It only needs to satisfy the requirement that the blades can rotate forward and reverse. No special requirements are made for this specific model. The fan 3 is preferably cylindrical and placed horizontally. The power and ventilation volume can be determined by the size of the room. Generally, 220v, 120w are selected, and the parameters can be adjusted according to actual conditions. A low-noise fan 3 is preferred, and its diameter is preferably the same as the diameter of the outside of the ventilation duct 1;

[0051] The piston 4 has a truncated cone shape that is small at the top and large at the bottom and is adapted to the ventilation duct 1, and is located indoors to improve the sealing between the ventilation duct 1; the piston 4 is preferably made of an extruded board or polyurethane board or other materials with good thermal insulation effect and a certain degree of extrusion shrinkage structure. The piston 4 is preferably a truncated cone shape that is adapted to the shape of the ventilation duct 1, the same size as the ventilation duct 1, small outside and large inside, and the height of the piston 4 is 2 cm greater than the thickness of the facility wall 2. The piston 4 runs a distance of 25-30 cm, and the parameters can be adjusted according to actual conditions. The truncated cone structure piston 4 can be formed into a shape similar to a bottle stopper to improve the airtightness and thermal insulation when closed.

[0052] The driving device 5 is used for driving the piston 4 to move axially along the ventilation duct 1 .

[0053] The utility model provides an embodiment of a driving device 5, which is entirely located indoors and includes:

[0054] The support assembly 51 is arranged inside the ventilation duct 1. It is preferably fixedly connected by four evenly distributed support vertical rods, which can be screws with a diameter of 1 cm and a length of 30 cm. The lower part is connected with a horizontal fixing rod, which is used to fix the motor and ensure the stable operation of the rack 53 described below, and to support and fix the piston 4 structure;

[0055] The motor is fixed on the support assembly 51, and can be specifically fixed on the above-mentioned transverse fixing rod;

[0056] A gear 52, which is disposed on the rotating rod of the motor;

[0057] A rack 53, which is disposed on the support assembly 51 and meshes with the rack 53, and whose length is preferably greater than 40 cm to meet the travel distance of the piston 4 of 25-30 cm;

[0058] One end of the rack 53 is connected to the piston 4, and the motor drives the gear 52 to drive the rack 53 and the piston 4 to move. That is, when the motor rotates, the gear 52 drives the rack 53 and thus drives the piston 4 to move up and down, realizing the switching process of the piston 4, and the switching stroke is 25-30 cm.

[0059] In the present invention, the ventilation duct 1 and the piston 4 are both isosceles frustum-shaped.

[0060] The main differences between the utility model and the utility model patent with announcement number CN207612771U are: the position of the piston 4 is changed. The piston 4 of the utility model with announcement number CN207612771U is arranged outdoors. When the temperature is low in winter, the piston 4 will quickly freeze under cold and humid conditions, affecting the use effect; the change of the fan position is changed from the original indoor design to the outdoor position, which can prevent the fan 3 from being in high humidity conditions indoors for a long time and reducing the service life; the running direction of the closed piston 4 is changed from top to bottom, and it is changed to bottom to top, mainly due to the change of the position of the piston 4; the material of the ventilation duct 1 is changed from the original stainless steel and other iron products to polypropylene plastic or fiberglass, which can reduce heat conduction and prevent the piston 4 from sticking to the iron ventilation duct wall when it is pre-cooled and wet.

[0061] The utility model is applied to agricultural facilities and has significant economic benefits, as follows:

[0062] Investment estimation and input-output ratio calculation show that if commercial results are transformed, based on the calculation of 667 square meters (per mu) of solar energy-saving greenhouses, the installation and sales price of a full set of equipment is less than 20,000 yuan. Based on the promotion of 5,000 greenhouses, it will potentially create sales of nearly 100 million yuan for the transformation enterprises.

[0063] In production, taking cucumber as an example, the number of times of disease prevention and control drugs are reduced by 2-3 times per mu, the artificial pollination procedures are reduced, the manual window opening work is eliminated, and the quality and unit price of commodities are significantly improved, and the yield is greatly increased, which increases the income of producers by 20% and saves 15% of production costs; the annual income per mu increases by about 10,000 yuan, and the cost is recovered in 2 years.

[0064] Through the cultivation and application test on cucumbers in 2020 and 2021, the base was at the test base of the Horticulture Branch of the Provincial Academy of Agricultural Sciences. Compared with the unused control, the use of this ventilation system has significantly improved the performance in terms of yield, disease incidence, and commercial quality. The test data of the application effect of the ventilation system in cucumber cultivation are shown in Table 1 below:

[0065]

[0066] Calculated based on 15 years of greenhouse use, the average annual cost of the equipment is less than 1,400 yuan. If cucumbers are used as production objects, the annual income per mu will increase by 10,000 yuan, and the input-output ratio is 1:7.2, which has a very significant input-output ratio advantage.

[0067] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. The truncated cone piston electric switch type active vent is characterized by: include: The ventilation duct is in the shape of a truncated cone with a small top and a large bottom, and is used to be installed in the wall, and is made of polypropylene plastic plate or fiberglass; A fan connected to the outside of the ventilation duct and located outdoors; The piston has a truncated cone shape that is small at the top and large at the bottom and is adapted to the ventilation duct, and is located indoors to improve the sealing performance between the piston and the ventilation duct, and is made of extruded board or polyurethane board material; A driving device, used for driving the piston to move axially along the ventilation duct; The driving device comprises: A support assembly, which is arranged inside the ventilation duct and located on one side of the room, and is fixedly connected to the ventilation duct; A motor, which is fixed on the supporting assembly; A gear, which is arranged on the rotating rod of the motor; a rack, which is disposed on the support assembly and meshes with the rack; One end of the rack is connected to the piston, and the motor drives the gear to drive the rack and the piston to move.

2. The truncated cone piston electric switch type active vent according to claim 1, characterized in that: The support assembly comprises: Four vertical rods, which are evenly distributed and fixedly connected to the inner side of the ventilation duct, and are fixedly connected by four evenly distributed supporting vertical rods; A transverse fixing rod is installed at the lower part of the vertical rod and is used to fix the motor and ensure the stable movement of the rack.

3. The truncated cone piston electric switch type active vent according to claim 1, characterized in that: The power of the fan is 220v, 120w.

4. The truncated cone piston electric switch type active vent according to claim 1, characterized in that: The ventilation duct and the piston are both in the shape of isosceles frustum.

5. The truncated cone piston electric switch type active vent according to claim 1, characterized in that: The outer cross-section diameter of the ventilation duct is 35-50 cm, and the inner cross-section diameter is 20 cm larger than the upper cross-section.

6. The truncated cone piston electric switch type active vent according to claim 1, characterized in that: The inner side and the outer side of the ventilation duct are both 3-5 cm higher than the inner side and the outer side of the wall.

7. The truncated cone piston electric switch type active vent according to any one of claims 1 to 6, characterized in that: The diameter of the fan is the same as the diameter of the outer side of the ventilation duct.

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