A solar cooker

Abstract

The present invention proposes a solar cooker with a simple solar structure, easy use and high-pressure cooking function, comprising a first solar vacuum tube, a concentrating plate and a bottom plate, and also comprising a second solar vacuum tube for generating water vapor, wherein the second solar vacuum tube is installed on a bracket and is located directly below the first solar vacuum tube, a nozzle is coaxially installed inside the second solar vacuum tube, a plurality of atomizing nozzles are arranged on the periphery of the nozzle, an air outlet connected to its internal cavity is also arranged on the second solar vacuum tube, a pressure tube is coaxially arranged inside the first inner tube of the first solar vacuum tube, and the air outlet is connected to the internal cavity of the pressure tube through a corrugated tube, and through the arrangement of the second solar vacuum tube, high-temperature steam is gathered and pressurized in the first solar vacuum tube to realize high-pressure cooking of food, thereby further improving the cooking speed of food and making the food have a better taste.

Description

Technical Field

[0001] The invention relates to a cooker, in particular to a solar cooker. Background Art

[0002] A solar cooker is a device that uses solar radiation energy to obtain heat for cooking food through concentration, heat transfer, and heat storage. It is a type of energy-saving product, so the vigorous promotion of the application of solar cookers is of great significance for saving conventional energy and reducing environmental pollution.

[0003] The Chinese invention patent with application number 201410339885.8 discloses a solar cooker, which includes: a base, a concentrator, a concentrator bracket and a solar vacuum tube, wherein the base includes a bottom plate and a support assembly for supporting the bottom plate, the support assembly includes a first support assembly and a second support assembly, the first support assembly is rotatably connected to one end of the bottom plate, the second support assembly is rotatably connected to the bottom plate through a first connecting mechanism, the concentrator bracket is rotatably connected to the bottom plate, the concentrator is fixed on the concentrator bracket, a fixing frame is provided on the bottom plate, and the solar vacuum tube is placed on the fixing frame and located at the focal spot of the concentrator. The invention has a simple structure, is easy to carry and use, can make full use of solar energy, has high working efficiency and is practical; for another example, the Chinese invention patent with application number 201210333430.6 discloses a solar cooker, which belongs to the field of solar energy circulation heat transfer. The solar cooker includes at least one solar heat source, an oven, a heat transfer system and a heating disc. The heating disc includes a heated pot body. The solar heat source is used to heat the heated pot body or the baking chamber of the oven. The heat transfer system includes a fan, at least one hot air duct and a hot air delivery duct. The fan includes an air inlet and an air outlet. The first end of each hot air duct is connected to the air inlet, and the second end of each hot air duct is inserted into the corresponding solar heat source. The first end of the hot air delivery duct is connected to the air outlet, and the second end of the hot air delivery duct is connected to the heating disc. The solar cooker of the invention includes at least one solar heat source to increase thermal energy. The solar heat source of the heat collection part is separated from the heating disc of the heat-using part, which facilitates the use of heat. And under the action of the fan of the heat transfer system, the hot air in the hot air duct is quickly transported to the heated pot body, which improves the heat transfer efficiency. However, the above-mentioned solar cookers all have the following defects:

[0004] During the use of the solar cooker, food is placed in a solar vacuum tube, which is composed of an outer tube and an inner tube. A vacuum layer is formed between the outer tube and the inner tube. The surface of the inner tube is coated with a heat-absorbing coating. Sunlight is irradiated on the heat-absorbing coating in the solar vacuum tube to generate heat, thereby cooking the food. Since the air temperature of the solar vacuum tube can reach 200 to 400 degrees, the surface of the food is often burnt while the inside is not fully cooked during the cooking process, which seriously affects the taste of the food. Secondly, in plateau areas, due to the high terrain and low air pressure, it is even more difficult to cook the food, and the practicality is poor. Summary of the invention

[0005] Therefore, in view of the above problems, the present invention proposes a solar cooker with simple solar structure, easy use and high-pressure cooking function.

[0006] In order to achieve the above technical problems, the solution adopted by the present invention is: a solar cooker, comprising a first solar vacuum tube, a concentrating plate and a bottom plate, the first solar vacuum tube is composed of a first outer tube and a first inner tube arranged coaxially, the outer surface of the first inner tube is coated with a heat-absorbing coating, a first vacuum chamber is formed between the first outer tube and the first inner tube, one end of the first solar vacuum tube is provided with a feeding port for placing food, a sealing cover is provided at the feeding port, a storage plate for holding food is installed at the end of the sealing cover, the storage plate is installed in the first solar vacuum tube by pulling, and the first solar vacuum tube is fixedly installed on the bottom plate by a bracket. The concentrating plate is rotatably mounted on both sides of the base plate through a connecting shaft, a supporting locking structure is arranged between the concentrating plate and the base plate, and also includes a second solar vacuum tube for generating water vapor, the second solar vacuum tube is mounted on the bracket and is located directly below the first solar vacuum tube, a nozzle is coaxially mounted inside the second solar vacuum tube, a plurality of atomizing nozzles are arranged on the periphery of the nozzle, an air outlet connected to the internal cavity thereof is also arranged on the second solar vacuum tube, a pressure tube is coaxially arranged inside the first inner tube of the first solar vacuum tube, and the air outlet is connected to the internal cavity of the pressure tube through a corrugated tube.

[0007] A further improvement is that a check valve for preventing steam backflow is installed on the air inlet of the first solar vacuum tube.

[0008] A further improvement is that an air outlet pipe is installed on the pressure pipe, and the end of the air outlet pipe extends to the outside of the first outer pipe and is installed with a pressure relief valve.

[0009] A further improvement is that the supporting locking structure is a hydraulic strut, the side walls of the base plate are respectively provided with outwardly extending reinforcing plates, one end of the hydraulic strut is hinged to the back of the focusing plate, the other end of the hydraulic strut is hinged to the reinforcing plate, and the hydraulic strut has a self-locking buckle.

[0010] A further improvement is that it also includes a box body, the bottom plate is arranged on the box body, the box body has a water storage tank, the water storage tank is provided with a submersible pump for pumping water out, and the water outlet end of the submersible pump is connected to the protruding end of the nozzle through a hose.

[0011] Further improvements are: two support plates are provided on the upper end surface of the box body, a slider is slidably provided on the box body along its length direction, one end of the bottom plate is rotatably connected to one of the support plates, a connecting rod is hinged on the lower end surface of the bottom plate, the other end of the connecting rod is hinged to the slider, and a driving mechanism for driving the slider to slide is provided on the box body.

[0012] A further improvement is that the driving mechanism includes a screw rod, which is rotatably installed between the two support plates, one end of the screw rod extends out of the support plate away from the hinged end of the base plate, the protruding end of the screw rod is fixedly connected to a handwheel, and the slider is provided with a threaded hole for the screw rod to pass through.

[0013] A further improvement is that a hand wheel is installed at the protruding end of the screw rod.

[0014] A further improvement is that it also includes an intelligent monitoring device, which includes a battery pack, a main board, a control panel, a temperature sensor and a pressure sensor. The temperature sensor and the pressure sensor are electrically connected to the signal input end of the main board, and the control output end of the main board is electrically connected to the submersible pump and the control panel.

[0015] A further improvement is that: a side plate is installed outside the box body, and a ground anchor is threadedly connected to the side plate.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The present invention is provided with a second solar vacuum tube for generating high-temperature steam. The first solar vacuum tube is provided with a heat-conducting layer and a pressure tube inwardly in sequence. The second solar vacuum tube is connected to the first solar vacuum tube through a bellows, so that the high-temperature steam is gathered and pressurized in the first solar vacuum tube to achieve high-pressure cooking of food, further improve the cooking speed of food, make the food have a better taste, and is more suitable for plateau areas, further reducing the limitations of the use environment.

[0018] 2. The heat-conducting layer and the pressure tube are arranged to prevent food from directly contacting the inner tube of the first solar vacuum tube. At the same time, the heat-conducting layer can withstand high temperature and high pressure environment, and effectively avoid damage to the inner tube without affecting heating and temperature rise.

[0019] 3. The focusing plates are rotatably installed on both sides of the base plate through the connecting shaft. The two focusing plates are divided into a "V" shape. Through the setting of the two focusing plates, different focusing plates can be adjusted independently, so that the most suitable reflection angle can be selected according to the direction of the sun.

[0020] 4. An air outlet pipe is installed on the first solar vacuum tube, and a pressure relief valve is installed on the air outlet pipe. The high-temperature steam in the first solar vacuum tube is depressurized through the pressure relief valve. After the pressure is released, the sealing cover is opened to take out the food, thereby improving safety.

[0021] 5. The bottom plate is rotatably connected to the box body. A connecting rod is hinged at the bottom of the bottom plate. The other end of the connecting rod is hinged to the slider. The slider is driven to slide by the screw rod, and the bottom plate is made to pitch and rotate on the box body under the support of the connecting rod, so that it can be better adjusted according to the position of the sun to maximize the solar energy absorption rate.

[0022] 6. Through the setting of intelligent monitoring equipment, that is, through the setting of the main board, control panel, temperature sensor and pressure sensor, the pressure in the first solar vacuum tube and the temperature in the second solar vacuum tube are monitored, and the start and stop of the submersible pump are controlled by the temperature value and the pressure value. On the one hand, the intelligence of the equipment is improved, and on the other hand, the damage to the tube body caused by too long idling time is avoided, thereby extending its service life.

[0023] 7. A nozzle with an atomizing nozzle is installed in the second solar vacuum tube, and water is atomized and sprayed out through the atomizing nozzle, thereby increasing the contact area between water and the second inner tube of the second solar vacuum tube, so that it can quickly generate high-temperature water vapor, thereby accelerating the steam generation efficiency and further shortening the food cooking time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a solar cooker according to an embodiment of the present invention.

[0025] Figure 2 It is a side view of a solar cooker according to an embodiment of the present invention.

[0026] Figure 3 It is a partial cross-sectional view of a solar vacuum tube of a solar cooker according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic structural diagram of a box body of a solar cooker according to an embodiment of the present invention.

[0028] In the figure: anchor 1, box body 2, support plate 3, focusing plate 4, first solar vacuum tube 5, hydraulic support rod 6, connecting rod 7, screw rod 8, slider 9, hand wheel 10, bottom plate 11, equipment bin 12, water storage bin 13, submersible pump 14, battery pack 15, control panel 16, inspection cover 17, main board 18, cover 19, second solar vacuum tube 20, bracket 21, arc portion 22, side plate 23, check valve 24, bellows 25, hose 26, storage plate 27, pressure sensor 28, temperature sensor 29, nozzle 30, atomizing nozzle 31, first inner tube 32, first vacuum chamber 33, heat conductive layer 34, pressure tube 35, first outer tube 36, air outlet pipe 37, pressure relief valve 38, second outer tube 39, second inner tube 40, reinforcement plate 41. DETAILED DESCRIPTION

[0029] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1:

[0031] refer to Figure 1-4 The embodiment of the present invention discloses a solar cooker, comprising a first solar vacuum tube 5, a concentrating plate 4 and a bottom plate 11, wherein the first solar vacuum tube 5 is composed of a first outer tube 36 and a first inner tube 32 arranged coaxially, the outer surface of the first inner tube 32 is coated with a heat-absorbing coating, and a first vacuum chamber 33 is formed between the first outer tube 36 and the first inner tube 32, the first vacuum chamber 33 prevents the heat on the first inner tube 32 from being lost to the outside, one end of the first solar vacuum tube 5 is provided with a feeding port for putting food, a sealing cover 19 is provided at the feeding port, a storage plate 27 for holding food is installed at the end of the sealing cover 19, the storage plate 27 is installed in the first solar vacuum tube 5 by pulling, preferably, the cross section of the storage plate 27 is an arc, the first solar vacuum tube 5 is fixedly installed on the bottom plate 11 by a bracket 21, and the first solar vacuum tube 5 is fixedly installed on the bottom plate 11 by a bracket 21, and the first solar vacuum tube 5 is fixedly installed on the bottom plate 11 by a bracket 21. The tube 5 extends along the length direction of the base plate 11, and there are no less than two groups of brackets 21 to ensure the installation stability of the first solar vacuum tube 5. The concentrating plate 4 is rotatably installed on both sides of the base plate 11 through a connecting shaft. The two concentrating plates 4 are distributed in a "V" shape. Through the setting of the two concentrating plates 4, different concentrating plates 4 can be adjusted independently, so that the most suitable reflection angle can be selected according to the direction of the sun. In order to facilitate the angle adjustment of the concentrating plate 4, a support locking structure is also included. In this embodiment, the support locking structure includes but is not limited to a hydraulic strut 6. The side walls of the base plate 11 are respectively provided with outwardly extending reinforcement plates 41. One end of the hydraulic strut 6 is hinged to the back of the concentrating plate 4, and the other end of the hydraulic strut 6 is hinged to the reinforcement plate 41. The hydraulic strut 6 has a self-locking buckle, thereby realizing the locking support of the concentrating plate 4 at any angle.

[0032] The second solar vacuum tube 20 is also included for generating water vapor. The second solar vacuum tube 20 is installed on the bracket 21 and is located directly below the first solar vacuum tube 5. The middle section of the bracket 21 has an arc portion 22 that matches the outer wall of the second solar vacuum tube 20. The second solar vacuum tube 20 is composed of a coaxially arranged second outer tube 39 and a second inner tube 40. A second vacuum chamber (not marked) is formed between the second outer tube 39 and the second inner tube 40. A nozzle 30 is coaxially installed inside the second solar vacuum tube 20. A plurality of atomizing nozzles 31 are arranged on the periphery of the nozzle 30. The water inlet end of the nozzle 30 extends from one end of the second solar vacuum tube 20. The water inlet end of the nozzle 30 is used to connect to an external water source. The second solar vacuum tube 20 also has a nozzle 30 disposed coaxially inside the second solar vacuum tube 20. An air outlet connected to its internal cavity is provided. Preferably, the air outlet is provided at the end of the second solar vacuum tube 20, and the air outlet is connected to the internal cavity of the first solar vacuum tube 5 through a bellows 25. A check valve 24 for preventing steam backflow is installed on the air inlet of the first solar vacuum tube 5. A pressure tube 35 is coaxially provided inside the first inner tube 32 of the first solar vacuum tube 5. The pressure tube 35 is a tube body made of stainless steel material that can withstand a certain air pressure. A heat-conducting layer 34 is filled between the first inner tube 32 and the pressure tube 35. Preferably, the heat-conducting layer 34 includes but is not limited to graphene filler. Through the heat conduction effect of the heat-conducting layer 34, the heat accumulated on the first inner tube 32 is transferred to the pressure tube 35, so that the inner cavity thereof is heated to heat the food.

[0033] The concentrating plate 4 reflects the sunlight onto the first solar vacuum tube 5 and the second solar vacuum tube 20. The first solar vacuum tube 5 stores food to be heated. The second solar vacuum tube 20 heats water and forms water vapor. Specifically, the external water source enters the nozzle 30, and the atomizing nozzle 31 forms water mist and sprays it toward the inner wall of the second inner tube 40. When the air temperature of the second solar vacuum tube 20 reaches below 100 degrees Celsius, the water mist contacts the inner wall of the second inner tube 40 and can be quickly vaporized into high-temperature steam. As the high-temperature steam enters the second inner tube 40, the water mist is heated and heated. The gathering causes the air pressure in the tube to rise. When the air pressure rises to the critical value of the check valve 24, the high-temperature steam in the second inner tube 40 enters the first solar vacuum tube 5 through the bellows 25 and gathers in the first solar vacuum tube 5. The check valve 24 can prevent the steam in the first solar vacuum tube 5 from flowing back. As the pressure in the first solar vacuum tube 5 rises, the food is cooked under high pressure, which can speed up the cooking speed of the food and make the food have a better taste. The pressure tube 35 can withstand the high pressure and avoid damage to the first inner tube 32.

[0034] As the high-temperature steam in the first solar vacuum tube 5 accumulates and the pressure continues to rise, it is necessary to release the pressure when taking out the food. If the cover 19 is opened directly, it may be dangerous. In order to improve the safety of the first solar vacuum tube 5 when used under high temperature and high pressure, a pressure relief valve 38 is also included. The first solar vacuum tube 5 is installed with an air outlet pipe 37. One end of the air outlet pipe 37 is connected to the inner cavity of the pressure tube 35, and the other end of the air outlet pipe 37 extends to the outside of the first outer tube 36. The pressure relief valve 38 is installed at the extended end of the air outlet pipe 37. The high-temperature steam in the first solar vacuum tube 5 is released by the pressure relief valve 38, and the cover 19 is opened to take out the food after the pressure is released, thereby improving safety.

[0035] In order to further improve the portability and integrity of the solar cooker, that is, to facilitate external water intake, it also includes a box body 2, the bottom plate 11 is arranged on the box body 2, the box body 2 has a water storage tank 13, the water storage tank 13 is provided with a submersible pump 14 for pumping water out, and the water outlet end of the submersible pump 14 is connected to the protruding end of the nozzle 30 through a hose 26.

[0036] In order to achieve the pitch adjustment of the focusing plate 4, two support plates 3 are provided on the upper end surface of the box body 2, and the vehicle seats are respectively located on both sides along the length direction of the box body 2. A slider 9 is slidably provided on the box body 2 along its length direction. One end of the bottom plate 11 is rotatably connected to one of the support plates 3, and the lower end surface of the bottom plate 11 is hinged with a connecting rod 7, and the other end of the connecting rod 7 is hinged to the slider 9. The sliding mechanism for driving the slider 9 to slide includes but is not limited to a screw rod 8, which is rotatably installed between the two support plates 3, and one end of the screw rod 8 extends out of the support plate 3 away from the hinged end of the bottom plate 11. The protruding end of the screw rod 8 is fixedly connected to a handwheel 10, and a threaded hole for the screw rod 8 to pass through is opened on the slider 9.

[0037] The screw rod 8 is rotated by turning the hand wheel 10. When the screw rod 8 rotates, the slider 9 slides along the length direction of the box body 2, and with the cooperation of the connecting rod 7, the bottom plate 11 is rotated, thereby realizing the pitch movement of the bottom plate 11, thereby further realizing the pitch movement of the focusing plate 4, so that it can be better adjusted according to the position of the sun to maximize the solar energy absorption rate.

[0038] In order to further realize the intelligence of the solar furnace body, it also includes an intelligent monitoring device, which includes a battery pack 15, a main board 18, a control panel 16, a temperature sensor 29 and a pressure sensor 28. The temperature sensor 29 and the pressure sensor 28 are electrically connected to the signal input end of the main board 18, and the control output end of the main board 18 is electrically connected to the submersible pump 14. The temperature sensor 29 is installed inside the second solar vacuum tube 20 to detect the air-drying temperature of the second solar vacuum tube 20. When the air-drying temperature of the second solar vacuum tube 20 reaches a set value, the main board 18 sends a start signal to the submersible pump 14, and the submersible pump 14 starts and pumps the water in the water storage tank 13 into the nozzle 30, thereby realizing the temperature detection of the second solar vacuum tube 20 to avoid damage to the tube body caused by too long air-drying time. The pressure sensor 28 is installed in the first solar vacuum tube 5 to detect the air pressure in the first solar vacuum tube 5. When the air pressure in the first solar vacuum tube 5 reaches the set value, the main board 18 sends a shutdown signal to the submersible pump 14, the submersible pump 14 stops, and the steam production stops. The control panel 16 is arranged on the outside of the box body 2. The control panel 16 is used to display the temperature and pressure values ​​and display the alarm prompt at the same time. When the submersible pump 14 stops, the main board 18 sends an alarm prompt and displays it on the control panel 16, so as to remind the user to protect the second solar vacuum tube 20 from light and avoid long-term empty exposure. The box body 2 also has an equipment compartment 12, and the battery and the main board 18 are both installed in the equipment compartment 12. The box body 2 is provided with an inspection cover 17 for opening the equipment compartment 12.

[0039] In order to facilitate the stable installation of the solar cooker, a side plate 23 is installed on the outside of the box body 2, and a ground anchor 1 is threadedly connected to the side plate 23. The box body 2 is fixed to the soil or sand through the ground anchor 1 to improve stability.

[0040] The modifications and changes made using this creation are all within the patent scope claimed by this creation, and are not limited to those disclosed in the embodiments.

Claims

1. A solar cooker, comprising a first solar vacuum tube, a concentrator and a bottom plate, wherein the first solar vacuum tube is composed of a first outer tube and a first inner tube arranged coaxially, the outer surface of the first inner tube is coated with a heat-absorbing coating, a first vacuum chamber is formed between the first outer tube and the first inner tube, one end of the first solar vacuum tube is provided with a feeding port for putting in food, a sealing cover is provided at the feeding port, a storage plate for holding food is installed at the end of the sealing cover, the storage plate is installed in the first solar vacuum tube by pulling, the first solar vacuum tube is fixedly installed on the bottom plate by a bracket, the concentrator is rotatably installed on both sides of the bottom plate by a connecting shaft, a supporting locking structure is provided between the concentrator and the bottom plate, and the characteristics are: The second solar vacuum tube is installed on the bracket and is located directly below the first solar vacuum tube. A nozzle is coaxially installed inside the second solar vacuum tube. A plurality of atomizing nozzles are arranged on the periphery of the nozzle. The second solar vacuum tube is also provided with an air outlet connected to its internal cavity. A pressure tube is coaxially arranged inside the first inner tube of the first solar vacuum tube. The air outlet is connected to the internal cavity of the pressure tube through a bellows. A check valve for preventing steam from flowing back is installed on the air inlet of the first solar vacuum tube; An air outlet pipe is installed on the pressure pipe, and an end of the air outlet pipe extends to the outside of the first outer pipe and is installed with a pressure relief valve.

2. The solar cooker according to claim 1, characterized in that: The supporting locking structure is a hydraulic strut, and the side walls of the base plate are respectively provided with outwardly extending reinforcing plates. One end of the hydraulic strut is hinged to the back of the focusing plate, and the other end of the hydraulic strut is hinged to the reinforcing plate. The hydraulic strut has a self-locking buckle.

3. The solar cooker according to any one of claims 1-2, characterized in that: It also includes a box body, the bottom plate is arranged on the box body, the box body is provided with a water storage tank, the water storage tank is provided with a submersible pump for pumping water out, and the water outlet end of the submersible pump is connected to the protruding end of the nozzle through a hose.

4. The solar cooker according to claim 3, characterized in that: Two support plates are arranged on the upper end surface of the box body, a slider is slidably arranged on the box body along its length direction, one end of the bottom plate is rotatably connected to one of the support plates, a connecting rod is hinged on the lower end surface of the bottom plate, the other end of the connecting rod is hinged to the slider, and a driving mechanism for driving the slider to slide is arranged on the box body.

5. The solar cooker according to claim 4, characterized in that: The driving mechanism includes a screw rod, which is rotatably installed between the two support plates. One end of the screw rod extends out of the support plate away from the hinged end of the base plate. A hand wheel is fixedly connected to the protruding end of the screw rod. A threaded hole for the screw rod to pass through is opened on the slider.

6. The solar cooker according to claim 5, characterized in that: A hand wheel is installed at the protruding end of the screw rod.

7. The solar cooker according to claim 3, characterized in that: It also includes an intelligent monitoring device, which includes a battery pack, a main board, a control panel, a temperature sensor and a pressure sensor. The temperature sensor and the pressure sensor are electrically connected to the signal input end of the main board, and the control output end of the main board is electrically connected to the submersible pump and the control panel.

8. The solar cooker according to claim 3, characterized in that: The outside of the box body is provided with a side plate, and the side plate is threadedly connected with a ground anchor.

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