WO2009049389A1 - Pest control process using heated air, and resulting equipment - Google Patents

Pest control process using heated air, and resulting equipment Download PDF

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Publication number
WO2009049389A1
WO2009049389A1 PCT/BR2008/000313 BR2008000313W WO2009049389A1 WO 2009049389 A1 WO2009049389 A1 WO 2009049389A1 BR 2008000313 W BR2008000313 W BR 2008000313W WO 2009049389 A1 WO2009049389 A1 WO 2009049389A1
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WO
WIPO (PCT)
Prior art keywords
air
equipment
heated air
pest
temperature
Prior art date
Application number
PCT/BR2008/000313
Other languages
French (fr)
Inventor
Francisco Maria Ayala Barreto
Original Assignee
Francisco Maria Ayala Barreto
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 Francisco Maria Ayala Barreto filed Critical Francisco Maria Ayala Barreto
Publication of WO2009049389A1 publication Critical patent/WO2009049389A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M17/00—Apparatus for the destruction of vermin in soil or in foodstuffs
    • A01M17/008—Destruction of vermin in foodstuffs
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M19/00—Apparatus for the destruction of noxious animals, other than insects, by hot water, steam, hot air, or electricity

Definitions

  • the present invention refers to process and an equipment for heating and air control, presenting a new proposal for pest and vectors control, for storage facilities in general and of grains and seeds in particular, and, for industrial facilities in general and of food processing in particular, due to the fact that it conditions the temperature for pest and vectors ellimination by hot air controlled insulfflation, using an equipment specifically designed for this purpose, in inaccessible places for man, being non aggressive and non toxic.
  • the agribusiness sector especially the segment of grains and seeds storage, and industrial installations such as mills, requires alternative solutions for pest and vectors control in its aeration, transport and process systems.
  • the pressure of the insects occurs especially on the inferior part of the silo, where powder and cereal leftovers accumulate, creating a perfect environment for its development.
  • the cleaning of these structures is necessary, but due to the difficulties of reaching those areas, it is not always possible, or, the cleaning doesn't reach hiding spots such as folds of plates and corners etc.
  • Pesticides utilization is limited because there is insufficient tightness in case of a gaseous pesticide, or due to difficulties on its full application, in case the pesticide is a spray mix.
  • storage facilities generally shall live with a situation of unwanted presence of insects, fungi, rodents and all kinds of pests and vectors that affect the quality of storage, jeopardizing the product's health and causing important economic losses.
  • TILTON and SCHROEDER (1963) exposed three insect species normally found on rice, to temperatures ranging between 65 0 C and 70 0 C, presenting complete mortality.
  • ZHONGLI PAN and others (2006) evaluated the characteristics and the effectiveness of the extermination of insects present on newly harvested rice by heating with infrared radiation in different time intervals. Based on the results, they recommend that the rice should be heated till 60 0 C followed by slow cooling of the grains in order to achieve total insect disinfestation.
  • the temperature of 6O 0 C and the slow cooling is not only efficient for the disinfestation but can also be used for simultaneous drying of rice effectively.
  • Rodents also need adequate environment for development and the temperature of 60 0 C may force them to abandon their hiding spots, facilitating their control and elimination.
  • Rodents control require installation of traps in adequate places, because of its big mobility, but, due to places as tunnels, lift shafts, carrier tapes, corners, compartments of equipments, etc., which are excellent hiding spots and difficult to reach, the capacity of rodents control is affected.
  • Flavio fungi and insects, whose development is associated with humidity and temperature, separately or combined, can damage direct or indirectly seed or grain quality, and they are classified as follows:
  • Contaminations presence of these organisms in grains or seeds;
  • Mass Heating fungi's and insects' metabolic activity increases seeds' and grains' mass temperature, causing a decrease on their germination capacity and vigour;
  • Reputation loss loss of market due to low quality, seeds are returned, compensation, and undermining the trademark and the name of the company;
  • Fungi are abundant in soil, in culture leftovers, hoppers, silos and in every place where it's possible to store or process seeds.
  • the attack or contamination of seeds by fungi occurs specially during the harvest, reception, drying and storage. Therefore, it is unlikely and definitively not practical, attempt to avoid that the seeds come into contact with the fungi spores. But it is possible to prevent their growth in newly harvested seeds.
  • HEATED AIR, AND RESULTING EQUIPMENT the object of the present patent was developed to overcome the inconveniences and limitations of the processes in use, bringing a new proposal, for pest and vectors control, for storage facilities in general and of seeds and grains in particular, industries in general and of food processing in particular, since it conditions the temperature in installations for the elimination of pest and vectors by heated air controlled insufflation, using an equipment specifically designed for this purpose, in inaccessible places for man, being non aggressive and non toxic, by heating the air of its habitat between 60 0 C and 70 0 C, for a determined time and creating inadequate conditions for its survivor.
  • Figure 1 shows the side view of a section of the present patent's equipment
  • Figure 2. shows the superior view of a section of the present patent's equipment
  • FIG. 3 shows the schematic diagram of the present patent's process
  • Figure 4. shows the side view of a section of the equipment's installation in a storage silo
  • Figure 5. shows a transversal section of the vertical building of a hypothetical mill using the process of the present patent
  • the pest and vectors control process of the present patent is carried out with the air heating equipment placed on the outside, in empty storage facilities and industrial facilities that allow room temperature from 60 0 C to 7O 0 C, and occurs as described bellow: a) The flow of heated air is calculated based on the volume to be filled with heated air, based on the constructive geometry of the installation to be controlled and the desired rate of renewal, manually or by a processor for volume calculations (15) and adjusting the spin of the fan's (2) engine; b) The protecting sensor(s) against high temperatures (11), the low flow of air sensor (13) and the timer (19) send a signal to the PLC (17) which releases the electrical trigger of the water pump (9) for the retention of particles in external air suspension and the opening of the fuel valve(s) (18); c) The air outlet temperature sensor (12) sends a signal to the PID controller (16) which acts over the proportional control valve (5) monitoring the fuel flow to the burner (1), keeping the air outlet temperature within the set limit; d) After application time of the heated air, adjusted on
  • the heating system can be indirect, using a gas or firewood boiler, equipped with pumps that booster the hot water to heat coils, installed on each pavement. These coils should be equipped with forced air circulators, valves and thermostats to control internal temperature.
  • the temperature sensor(s) (11) installed inside the building on the monitoring points inform the room temperature to the temperature controller (20), which opens or shuts off the heating fluid control valves (24) on heating module(s) (25), provided by the heater or boiler (21).
  • the thermal charges When applied on storage facilities, the thermal charges should be set for small, medium, and large sized structures and considering that the air flow is low, the fan should be sized up only for temperature maintenance inside the tunnels, aeration ducts, and lift shafts. Normally, the air pressure involved is low, and the use of axial fans is suggested.
  • the patent of invention also requires a duct, preferably flexible, to lead the treated air from the air heating equipment to the entrance of the unit which is being fed. All these aspects are specified in the attached figures.
  • the energy source could be gas, firewood or another liquid or solid fuel, with direct or indirect heating (hot water fed). There should also be protective devices to avoid excessive temperature rise and consequent accidents.
  • the equipment of the present patent consists on an air heating equipment (1) with a gas burner (1-A), mechanical fan (centrifugal or axial) (2), gas recipient (3), hot air outlet (4), proportional opening valve(s) (5), chassi (6) for internal displacements, adjustable valve to control the air flow (7), water tank (8), water pump (9), water particles check filter (10), temperature sensor for the air inside the installation (11), temperature sensor for the air produced (12), security air flow sensor (13), frequency inverter (14) activated manually or automatically by a processor (15) fed with information of the geometry of the installation and renewal rate, calculates the flow of heated air, PID controller (16) to monitor the gas supply to the burner (1-A), programmable logic controller (17) and security valve(s) to cut off the gas supply (18) and the timer (19) interconnected with the PLC (17).
  • the equipment to be used consists on a temperature sensor (11) installed inside the building on the monitoring points, connected to the temperature controller (20) which acts on the heating fluid control valve (24), linked with the heating module(s) (25) and connected with the heater or boiler (21) optionally by a pump (22) or directly by piping for the supply of heating fluid (23) and heating fluid return piping (26).
  • the fan's spin is established on the frequency inverter based on the installation's geometry
  • the fan's engine is activated on set spin

Abstract

Pest control process using heated air and resulting equipment, refers to the Patent of the Invention of a process and an equipment for heating and air control, presenting a new proposal for pest and vectors control, for storage facilities in general and of grains and seeds in particular, and, for industrial facilities in general and of food processing in particular, due to the fact that it conditions the temperature for pest and vectors ellimination by hot air controlled insulfflation, using an equipment specifically designed for this purpose, in inaccessible places for man, being non aggressive and non toxic, by heating the air of its habitat between 6O°C and 70°C, for a determined time and creating inadequate conditions for its survivor.

Description

PEST CONTROL PROCESS USING HEATED AIR, AND RESULTING EQUIPMENT
The present invention refers to process and an equipment for heating and air control, presenting a new proposal for pest and vectors control, for storage facilities in general and of grains and seeds in particular, and, for industrial facilities in general and of food processing in particular, due to the fact that it conditions the temperature for pest and vectors ellimination by hot air controlled insulfflation, using an equipment specifically designed for this purpose, in inaccessible places for man, being non aggressive and non toxic.
The agribusiness sector, especially the segment of grains and seeds storage, and industrial installations such as mills, requires alternative solutions for pest and vectors control in its aeration, transport and process systems. In the case of silos and storehouses, the pressure of the insects occurs especially on the inferior part of the silo, where powder and cereal leftovers accumulate, creating a perfect environment for its development. The cleaning of these structures is necessary, but due to the difficulties of reaching those areas, it is not always possible, or, the cleaning doesn't reach hiding spots such as folds of plates and corners etc. Pesticides utilization is limited because there is insufficient tightness in case of a gaseous pesticide, or due to difficulties on its full application, in case the pesticide is a spray mix. In practice, storage facilities generally shall live with a situation of unwanted presence of insects, fungi, rodents and all kinds of pests and vectors that affect the quality of storage, jeopardizing the product's health and causing important economic losses.
When it comes to industrial installations, such as mills and processing of oats, as an example, the cleaning of equipments and structures is a prerequisite to ensure the health and quality of food. Industries are aware about total pest control and elimination of pesticides use, and normally rely on a periodic preventive maintenance program, which requires the total cessation of the unit for some time for its hygiene. Works carried out by researchers in american universities indicate that insects do not survive when exposed to high temperatures for some time.
TILTON and SCHROEDER (1963) exposed three insect species normally found on rice, to temperatures ranging between 650C and 70 0C, presenting complete mortality.
ZHONGLI PAN and others (2006) evaluated the characteristics and the effectiveness of the extermination of insects present on newly harvested rice by heating with infrared radiation in different time intervals. Based on the results, they recommend that the rice should be heated till 600C followed by slow cooling of the grains in order to achieve total insect disinfestation. The temperature of 6O0C and the slow cooling is not only efficient for the disinfestation but can also be used for simultaneous drying of rice effectively.
Researches carried out by SUBRAMANYAN in 2004 indicate that insects do not survive when exposed to temperatures in the range of 600C when exposed for a period of time. According to SUBRAMANYAN, after mortality tests done to adult insects exposed to temperature from infrared flameless catalytic heaters, on samples of cereal contaminated with insects placed on a support of stainless steel of 1 squared feet of area, the following results were found, among other results:
Table 1. Behavior of insects exposed to high temperatures. Insect Species: Species 1 Species 2 Species 3 Amount of food ( pounds ): 0,25 0,50 0,50 Period of exposition (seconds): 15 30 30 Product's temperature ( 0 C ): 60 60 61 N° of deaths / total: 100/100 254/254 268/268 % of deaths: 100 100 100 Species 1 = Oryzaephilus surinamensis Species 2 = Sitophilus granarius Species 3 = Tribolium castaneum
Rodents also need adequate environment for development and the temperature of 600C may force them to abandon their hiding spots, facilitating their control and elimination. Rodents control require installation of traps in adequate places, because of its big mobility, but, due to places as tunnels, lift shafts, carrier tapes, corners, compartments of equipments, etc., which are excellent hiding spots and difficult to reach, the capacity of rodents control is affected.
Usually, the maintenance section of the grain storage facilities plans an overhaul, preceding the crop, allowing the hygienisation as proposed by this patent.
According to Lazzari, Flavio, "fungi and insects, whose development is associated with humidity and temperature, separately or combined, can damage direct or indirectly seed or grain quality, and they are classified as follows:
Contaminations: presence of these organisms in grains or seeds;
Reduction of the germination capacity and vigour as a consequence of the action of fungi such as the Aspergillus that contaminates the individual grain or seed of different species when its moisture content is near the upper limit considered safe for its storage. The insects affect germination by consuming its embryo.
Mass Heating: fungi's and insects' metabolic activity increases seeds' and grains' mass temperature, causing a decrease on their germination capacity and vigour;
Discard of seed lots: occur mainly due to germination problems;
Marketing costs: seeds presenting sanitary and physiologic problems increase selling costs;
Reputation loss: loss of market due to low quality, seeds are returned, compensation, and undermining the trademark and the name of the company;
Fungi are abundant in soil, in culture leftovers, hoppers, silos and in every place where it's possible to store or process seeds. The attack or contamination of seeds by fungi (Aspergilluesm Fusariu e Penicillium) occurs specially during the harvest, reception, drying and storage. Therefore, it is unlikely and definitively not practical, attempt to avoid that the seeds come into contact with the fungi spores. But it is possible to prevent their growth in newly harvested seeds.
PROCESS FOR PEST CONTROL USING
HEATED AIR, AND RESULTING EQUIPMENT, the object of the present patent was developed to overcome the inconveniences and limitations of the processes in use, bringing a new proposal, for pest and vectors control, for storage facilities in general and of seeds and grains in particular, industries in general and of food processing in particular, since it conditions the temperature in installations for the elimination of pest and vectors by heated air controlled insufflation, using an equipment specifically designed for this purpose, in inaccessible places for man, being non aggressive and non toxic, by heating the air of its habitat between 600C and 700C, for a determined time and creating inadequate conditions for its survivor.
For better comprehension of the present patent, the following Figures are attached:
Figure 1., shows the side view of a section of the present patent's equipment;
Figure 2., shows the superior view of a section of the present patent's equipment;
Figure 3., shows the schematic diagram of the present patent's process;
Figure 4., shows the side view of a section of the equipment's installation in a storage silo; Figure 5., shows a transversal section of the vertical building of a hypothetical mill using the process of the present patent;
The pest and vectors control process of the present patent is carried out with the air heating equipment placed on the outside, in empty storage facilities and industrial facilities that allow room temperature from 600C to 7O0C, and occurs as described bellow: a) The flow of heated air is calculated based on the volume to be filled with heated air, based on the constructive geometry of the installation to be controlled and the desired rate of renewal, manually or by a processor for volume calculations (15) and adjusting the spin of the fan's (2) engine; b) The protecting sensor(s) against high temperatures (11), the low flow of air sensor (13) and the timer (19) send a signal to the PLC (17) which releases the electrical trigger of the water pump (9) for the retention of particles in external air suspension and the opening of the fuel valve(s) (18); c) The air outlet temperature sensor (12) sends a signal to the PID controller (16) which acts over the proportional control valve (5) monitoring the fuel flow to the burner (1), keeping the air outlet temperature within the set limit; d) After application time of the heated air, adjusted on the timer (19), the PLC (17) shuts down the whole unit closing the process; e) When temperatures exceed the limit set, the temperature controller (20) sends a signal to the PLC (17) for the equipment shutdown and eventual activation of a fire extinguishing system.
When applied in industrial buildings such as mills and food processing companies, the heating system can be indirect, using a gas or firewood boiler, equipped with pumps that booster the hot water to heat coils, installed on each pavement. These coils should be equipped with forced air circulators, valves and thermostats to control internal temperature.
As an alternative in industrial facilities, the temperature sensor(s) (11) installed inside the building on the monitoring points, inform the room temperature to the temperature controller (20), which opens or shuts off the heating fluid control valves (24) on heating module(s) (25), provided by the heater or boiler (21).
When applied on storage facilities, the thermal charges should be set for small, medium, and large sized structures and considering that the air flow is low, the fan should be sized up only for temperature maintenance inside the tunnels, aeration ducts, and lift shafts. Normally, the air pressure involved is low, and the use of axial fans is suggested.
The patent of invention also requires a duct, preferably flexible, to lead the treated air from the air heating equipment to the entrance of the unit which is being fed. All these aspects are specified in the attached figures.
The energy source could be gas, firewood or another liquid or solid fuel, with direct or indirect heating (hot water fed). There should also be protective devices to avoid excessive temperature rise and consequent accidents.
Other characteristics of the invention is that it should be possible to automatically switch between energy sources, in order to allow the work to continue and the temperature of the installations to be maintained, avoiding the process' suspension and the problems that it represents in terms of work resumption. Sound signaling system to inform the operator about the necessity of substituting the primary source of energy.
The description that follows and the attached figures, used as an exemplifier, will facilitate the full comprehension of the invention.
The equipment of the present patent consists on an air heating equipment (1) with a gas burner (1-A), mechanical fan (centrifugal or axial) (2), gas recipient (3), hot air outlet (4), proportional opening valve(s) (5), chassi (6) for internal displacements, adjustable valve to control the air flow (7), water tank (8), water pump (9), water particles check filter (10), temperature sensor for the air inside the installation (11), temperature sensor for the air produced (12), security air flow sensor (13), frequency inverter (14) activated manually or automatically by a processor (15) fed with information of the geometry of the installation and renewal rate, calculates the flow of heated air, PID controller (16) to monitor the gas supply to the burner (1-A), programmable logic controller (17) and security valve(s) to cut off the gas supply (18) and the timer (19) interconnected with the PLC (17).
As an alternative to pest control on industrial installations, the equipment to be used consists on a temperature sensor (11) installed inside the building on the monitoring points, connected to the temperature controller (20) which acts on the heating fluid control valve (24), linked with the heating module(s) (25) and connected with the heater or boiler (21) optionally by a pump (22) or directly by piping for the supply of heating fluid (23) and heating fluid return piping (26).
The present patent equipment's operation follows the sequence bellow:
1 - Enable the PLC (17);
2 - The fan's spin is established on the frequency inverter based on the installation's geometry;
3 - The fan's engine is activated on set spin;
4 - Shuts down manual or automatically when the pre-set application time is achieved.

Claims

1. PEST CONTROL PROCESS USING HEATED AIR, characterized by, pest combat on cereal and grain storage facilities and industries in general, by heating the air of its habitat between 6O0C and 7O0C, for a determined time and creating inadequate conditions for its survivor;
2. PEST CONTROL PROCESS USING HEATED AIR, according to claim 1, characterized by, pest and vectors control by heated air equipment placed on the outside on empty storage facilities and industrial facilities that allow room temperature of 60° to 700C according on the following sequence: a) The necessary airflow is calculated based on the volume to be filled with heated air, based on the constructive geometry of the installation to be controlled and the desired rate of renewal, manually or by a processor for volume calculations (15) and adjusting the spin of the fan's (2) engine; b) The protecting sensor(s) against high temperatures (11), the low flow of air sensor (13) and the timer (19) send a signal to the PLC (17) which releases the electrical trigger of the water pump (9) for the retention of particles in external air suspension and the opening of the fuel valve (s) (18); c) The air outlet temperature sensor (12) sends a signal to the controller PID (16) which acts over the proportional control valve (5) monitoring the fuel flow to the burner (1), keeping the air outlet temperature within the set limit; d) After application time of the heated air, adjusted on the timer (19), the PLC (17) shuts down the whole unit closing the process; e) When temperatures exceed the limit set, the temperature controller (20) sends a signal to the PLC (17) for the equipment shutdown and eventual activation of a fire extinguishing system;
3. PEST CONTROL PROCESS USING HEATED AIR, according to claim 1, characterized by, as an alternative in industrial facilities, the temperature sensor(s) (11) installed inside the building on the monitoring points, inform the room temperature to the temperature controller (20), which opens or shuts off the heating fluid control valves (24) on heating module(s) (25), provided by the heater or boiler (21);
4. EQUIPMENT, of which its process is described on claim 1, characterized by, heated air equipment (1) with a gas burner (1-A), mechanical fan (centrifugal or axial) (2), gas recipient (3), hot air outlet (4), proportional opening valve(s) (5), chassis (6) for internal displacements, adjustable valve to control the air flow (7), water tank (8), water pump (9), water particles check filter (10), temperature sensor for the air inside the installation (11), temperature sensor for the air produced (12), security air flow sensor (13), frequency inverter (14) activated manually or automatically by a processor (15) fed with information of the geometry of the installation and renewal rate, calculates the flow of heated air, PID controller (16) to monitor the gas supply to the burner (1- A), programmable logic controller (17) and security valve(s) to cut off the gas supply (18) and the timer (19) interconnected with the PLC (17);
5. EQUIPMENT, according to claim 4, characterized by, as an alternative to pest control on industrial installations, the equipment to be used consists on a temperature sensor (11) installed inside the building on the monitoring points, connected to the temperature controller (20) which acts on the heating fluid control valve (24), linked with the heating module(s) (25) and connected with the heater or boiler (21) optionally by a pump (22) or directly by piping for the supply of heating fluid (23) and heating fluid return piping (26).
PCT/BR2008/000313 2007-10-16 2008-10-15 Pest control process using heated air, and resulting equipment WO2009049389A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0703580-2 2007-10-16
BRPI0703580 BRPI0703580A (en) 2007-10-16 2007-10-16 process for pest control by heated air and resulting equipment

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8479440B2 (en) 2011-04-06 2013-07-09 Technologies Holdings Corp. Self-contained heating unit for thermal pest control
CN104135855A (en) * 2012-02-28 2014-11-05 株式会社佐竹 Device and method for exterminating husk insect pests
CN104137716A (en) * 2014-08-06 2014-11-12 湖北中禾粮油有限公司 Mechanical ventilating system for storing high-moisture rapeseeds and ventilating method of mechanical ventilating system
US9237742B2 (en) 2011-01-25 2016-01-19 Technologies Holdings Corp. Portable heating system and method for pest control
CN108338151A (en) * 2018-03-19 2018-07-31 郑州龙威电子科技有限公司 A kind of grain processing system that dry deinsectization is efficient
CN114145285A (en) * 2021-10-25 2022-03-08 武汉天择食品科技有限公司 Nut deinsectization screening system and deinsectization screening method
FR3132818A1 (en) * 2022-02-23 2023-08-25 Hp.E Device for thermo-disinsection of agricultural products, in particular cereals, and corresponding method

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EP0655195A1 (en) * 1993-11-26 1995-05-31 AUTOMATISCHE WALZENMÜHLE HEISS GmbH Process and device for destruction of vermin in warehouses or processing places
EP1356730A2 (en) * 2002-04-26 2003-10-29 Florencio Lazo Barra A method for thermal pest control

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1754717U (en) * 1957-05-02 1957-10-24 Harry Batty DEVICE FOR THE TREATMENT OF ROOMS, IN PARTICULAR ROOFS, WITH HOT GASES.
EP0655195A1 (en) * 1993-11-26 1995-05-31 AUTOMATISCHE WALZENMÜHLE HEISS GmbH Process and device for destruction of vermin in warehouses or processing places
EP1356730A2 (en) * 2002-04-26 2003-10-29 Florencio Lazo Barra A method for thermal pest control

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9992990B2 (en) 2011-01-25 2018-06-12 Therma-Stor LLC Portable heating system and method for pest control
US9578867B2 (en) 2011-01-25 2017-02-28 Technologies Holding Corp. Portable heating system and method for pest control
US10051853B2 (en) 2011-01-25 2018-08-21 Therma-Stor LLC Portable heating system and method for pest control
US9237742B2 (en) 2011-01-25 2016-01-19 Technologies Holdings Corp. Portable heating system and method for pest control
US9807994B2 (en) 2011-01-25 2017-11-07 Technologies Holdings Corp. Portable heating system and method for pest control
US9374991B2 (en) 2011-01-25 2016-06-28 Technologies Holdings Corp. Portable heating system and method for pest control
US9930878B2 (en) 2011-01-25 2018-04-03 Therma-Stor LLC Portable heating system and method for pest control
US8479440B2 (en) 2011-04-06 2013-07-09 Technologies Holdings Corp. Self-contained heating unit for thermal pest control
US8479439B2 (en) 2011-04-06 2013-07-09 Technologies Holding Corp. Self-contained heating unit for thermal pest control
US9743656B2 (en) 2012-02-28 2017-08-29 Satake Corporation Grain pest control apparatus and method
CN104135855A (en) * 2012-02-28 2014-11-05 株式会社佐竹 Device and method for exterminating husk insect pests
US20150113856A1 (en) * 2012-02-28 2015-04-30 Satake Corporration Grain pest control apparatus and method
CN104137716B (en) * 2014-08-06 2015-11-18 湖北中禾粮油有限公司 A kind of mechanical ventilation system for storing rapeseed of high moisture content and method of ventilation thereof
CN104137716A (en) * 2014-08-06 2014-11-12 湖北中禾粮油有限公司 Mechanical ventilating system for storing high-moisture rapeseeds and ventilating method of mechanical ventilating system
CN108338151A (en) * 2018-03-19 2018-07-31 郑州龙威电子科技有限公司 A kind of grain processing system that dry deinsectization is efficient
CN114145285A (en) * 2021-10-25 2022-03-08 武汉天择食品科技有限公司 Nut deinsectization screening system and deinsectization screening method
FR3132818A1 (en) * 2022-02-23 2023-08-25 Hp.E Device for thermo-disinsection of agricultural products, in particular cereals, and corresponding method

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BRPI0703580A (en) 2008-02-26

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