Garbage heating device

Abstract

The present invention discloses a garbage heating device, comprising: a garbage bin with a garbage inlet on one side and a garbage outlet on the other; a moving bed located at the bottom of the bin, used to move garbage from the inlet to the outlet; and a low-power linear Fresnel lens mounted on the top, used to heat the garbage using multiple parallel, focused strip-shaped light spots until the temperature at the outlet reaches 40-50°C. This device utilizes a garbage heating technology based on a linear Fresnel lens, maximizing the concentration of solar radiation energy with a short focal length to heat the garbage. This technology addresses the high cost, low energy density, high energy consumption, and large footprint of existing garbage heating technologies, achieving high efficiency, energy saving, low carbon emissions, environmental friendliness, and a simple system.

Description

Technical Field

[0001] The invention belongs to the field of garbage disposal, and in particular relates to a garbage heating device based on a linear Fresnel lens. Background Art

[0002] In the process of garbage disposal, whether it is anaerobic, aerobic or incineration, there are certain requirements for the temperature of garbage. In the cold and cold regions of the north, the winter temperature is below zero for a long time, and the collected garbage is very easy to freeze.

[0003] (1) During incineration, frozen garbage will lead to increased mechanical and chemical incomplete losses, increased slag thermal burn rate, deterioration of furnace aerodynamic conditions, and reduced combustion efficiency; the primary air temperature will drop, requiring more energy to maintain the air temperature; resulting in unstable system operation, increased energy consumption, and reduced power generation revenue.

[0004] (2) For anaerobic or aerobic treatment, in the northern cold or cold regions, the winter temperature is too low, even below -20°C. Generally speaking, when the temperature is below 10°C, the activity of microorganisms in the garbage decreases, and the fermentation rate decreases accordingly; when the temperature is below 5°C, the garbage stops fermenting completely, causing the process to stagnate.

[0005] To ensure normal waste treatment in winter, the temperature of the waste is kept at a certain level, which requires a lot of energy. There are generally two types of waste heating technologies.

[0006] (1) Solar drying room: The principle of solar drying room is to use solar radiation energy to pass through the collector cover and project onto the heat absorbing plate of the collector. The heat absorbing plate is absorbed and converted into heat energy to heat the air in the collector, causing its temperature to gradually rise. The heated air is sent into the drying room through the fan, transferring heat to the garbage material to be dried, causing the moisture in the garbage material to continuously vaporize, and then the water vapor is taken away in time through air convection, thereby achieving the purpose of drying the material. The energy flow density of the solar drying room is low, the floor space is huge, and the cost is high; at the same time, when the sunshine conditions cannot meet the drying needs, the system needs to start the backup heat source system.

[0007] (2) Introducing external heat sources such as steam or boilers: This system works by injecting steam directly into the garbage or indirectly heating it using a surface heat exchanger. This system requires the introduction of external energy and consumes a lot of energy.

[0008] In summary, the existing garbage heating technology generally has technical problems such as large heating device footprint, high cost, low energy flow density, low heating efficiency and high energy consumption. Summary of the Invention

[0009] The present invention aims to develop a garbage heating device that is efficient, energy-saving, low-carbon, environmentally friendly, simple in system, and easy to operate, which can solve the above technical problems.

[0010] According to one aspect of the present invention, a garbage heating device is provided, comprising: a garbage bin having a garbage inlet on one side and a garbage outlet on the other side; a moving bed located at the bottom of the garbage bin and configured to move garbage from the garbage inlet to the garbage outlet; the garbage heating device also comprising a low-power linear Fresnel lens disposed at the top for heating the garbage using multiple parallel focused strip-shaped light spots until the garbage reaches a temperature of 40-50°C at the garbage outlet.

[0011] Preferably, the low-power linear Fresnel lens is arranged on the side of the garbage bin.

[0012] Preferably, the device further comprises an air bin located at the lower part of the moving bed, and a high-power linear Fresnel lens is installed on the side of the air bin for heating the garbage through air convection and radiation heat exchange.

[0013] Preferably, the moving bed is provided with holes and gaps for draining the garbage.

[0014] Preferably, a drainage pit is provided at the bottom of the air bin to collect leachate after the garbage is drained.

[0015] Preferably, the device further comprises a heat insulating layer located on the opposite side of the low-power linear Fresnel lens or the high-power linear Fresnel lens, for preventing heat loss from the garbage bin and the air bin.

[0016] Preferably, the device further comprises a flexible reflective heat-insulating curtain located on the surface of the low-power linear Fresnel lens or the high-power linear Fresnel lens, for reducing radiation when the solar radiation intensity is too high or avoiding reverse radiation when there is no solar radiation.

[0017] Preferably, a sealed heat-insulating door is provided at the garbage inlet, which is closed after the garbage feeding is completed, so as to reduce heat loss and odor emission in the garbage bin.

[0018] Preferably, the device also includes: an ambient temperature detector for detecting the temperature of the environment surrounding the device; a light intensity detector for detecting the light intensity on the surface of the low-power linear Fresnel lens; and a controller for calling the ambient temperature and light intensity of the historical same period, comparing the called ambient temperature with the detected ambient temperature to obtain a first comparison result, comparing the called light intensity with the detected light intensity to obtain a second comparison result, and adjusting the operating speed of the moving bed according to the first comparison result, the second comparison result and the current temperature of the garbage at the garbage outlet.

[0019] Preferably, the controller adjusts the running speed of the moving bed according to the first comparison result, the second comparison result and the current temperature of the garbage at the garbage outlet, including: calculating the first comparison result to be equal to the difference between the detected ambient temperature and the called ambient temperature; calculating the second comparison result to be equal to the difference between the detected light intensity and the called light intensity; calculating the quotient of the absolute value of the second comparison result and the absolute value of the first comparison result to obtain the expected temperature change rate of the garbage at the garbage outlet; calculating the expected temperature of the garbage at the garbage outlet to be equal to the product of the current temperature of the garbage at the garbage outlet multiplied by the expected temperature change rate; and when the product value is less than 42°C, the running speed of the moving bed slows down, and when the product value is greater than 48°C, the running speed of the moving bed speeds up.

[0020] The present invention provides a garbage heating device comprising: a garbage bin with a garbage inlet on one side and a garbage outlet on the other; a moving bed located at the bottom of the bin, configured to move garbage from the inlet to the outlet; and a low-power linear Fresnel lens mounted on the top, configured to heat the garbage using multiple parallel, focused strip-shaped light spots until the temperature at the outlet reaches 40-50°C. This linear Fresnel lens-based garbage heating device maximizes the concentration of solar radiation energy with a short focal length to heat the garbage. This solves the technical problems of existing garbage heating technologies, such as high cost, low energy density, high energy consumption, and large footprint, while achieving high efficiency, energy saving, low carbon emissions, and environmental protection, along with a simple system and operational advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 shows a vertical cross-sectional view of a heating chamber according to an embodiment of the present invention; and

[0023] Figure 2 A side view of a heating chamber according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. For ease of interpretation and precise definition in the appended claims, the terms "upper," "lower," "inner," and "outer" are used to describe features of the exemplary embodiments with reference to their positions as shown in the drawings.

[0026] According to an embodiment of the present invention, a garbage heating device includes: a garbage bin 1 having a garbage inlet 10 on one side and a garbage outlet 9 on the other side; a moving bed 3 located at the bottom of the bin 1, configured to move garbage from the inlet 10 to the outlet 9; and a low-power linear Fresnel lens 4 located at the top, configured to heat the garbage using multiple parallel focused strip-shaped light spots until the temperature of the garbage at the outlet 9 reaches 40-50°C. The low-power linear Fresnel lens 4 is located on the side of the bin 1.

[0027] Related technologies all have requirements for garbage temperature and consume a large amount of energy. This invention provides a garbage heating technology based on a linear Fresnel lens. This technology can maximize the concentration of solar radiation energy to heat the garbage at a short focal length, thereby addressing the technical issues of high cost, low heating efficiency, and large floor space required for garbage heating.

[0028] According to an embodiment of the present invention, the garbage heating device further includes an air bin 2 located below the moving bed 3 , and a high-power linear Fresnel lens 5 is installed on the side of the air bin 2 for heating the garbage through air convection and radiation heat exchange.

[0029] In the related art, the combustion efficiency of garbage heating is low. The present invention provides a garbage heating device equipped with an air chamber and a high-power linear Fresnel lens, which can heat the garbage through air convection and radiation heat exchange, thereby achieving the effect of increasing the calorific value of domestic garbage and saving energy and high efficiency.

[0030] According to an embodiment of the present invention, the moving bed 3 is provided with holes and gaps for draining the garbage; the bottom of the air bin 2 is provided with a drainage pit 8 for collecting leachate after the garbage is drained.

[0031] The present invention provides holes and gaps on the moving bed to drain the garbage, and provides a drainage pit at the bottom of the air bin to discharge the permeate after drainage, thereby achieving the effect of drying the material.

[0032] According to an embodiment of the present invention, the garbage heating device further includes a heat insulation layer 7 located on the opposite side of the low-power linear Fresnel lens 4 or the high-power linear Fresnel lens 5 to prevent heat loss in the garbage bin 1 and the air bin 2.

[0033] In the related art, the energy flow density and combustion efficiency of garbage heating are relatively low. The present invention provides a garbage heating device with an insulation layer, thereby reducing mechanical and chemical incomplete losses during the garbage heating process, thereby achieving the effect of reducing energy consumption and improving combustion efficiency.

[0034] According to an embodiment of the present invention, the garbage heating device further includes a flexible reflective heat-insulating curtain 6 located on the surface of the low-power linear Fresnel lens 4 or the high-power linear Fresnel lens 5, which is used to reduce radiation when the solar radiation intensity is too high or to avoid reverse radiation when there is no solar radiation.

[0035] In related technologies, because Fresnel lenses are transparent components, when solar radiation intensity is excessive, only the Fresnel lens focuses the radiation, rapidly increasing the temperature of the garbage and potentially causing spontaneous combustion. When solar radiation is low or absent, heat is easily dissipated through reverse radiation. The present invention utilizes a flexible reflective thermal insulation curtain to ensure that the garbage heating device operates normally and efficiently under varying solar radiation intensities.

[0036] According to an embodiment of the present invention, a sealed heat-insulating door is provided at the garbage inlet 10 , which is closed after the garbage feeding is completed, so as to reduce heat loss and odor emission in the garbage bin 1 .

[0037] Prior art garbage heating devices commonly suffer from significant mechanical and chemical incomplete losses, low energy density, and low heating efficiency. The present invention incorporates a sealed, insulated door at the garbage inlet, thereby improving energy density and heating efficiency while preventing odor from escaping, achieving high energy efficiency and environmental friendliness.

[0038] According to an embodiment of the present invention, the garbage heating device also includes: an ambient temperature detector for detecting the temperature of the environment surrounding the device; a light intensity detector for detecting the light intensity on the surface of the low-power linear Fresnel lens 4; and a controller for calling the ambient temperature and light intensity of the historical same period, comparing the called ambient temperature with the detected ambient temperature to obtain a first comparison result, comparing the called light intensity with the detected light intensity to obtain a second comparison result, and adjusting the operating speed of the moving bed 3 according to the first comparison result, the second comparison result and the current temperature of the garbage at the garbage outlet 9.

[0039] According to an embodiment of the present invention, the controller adjusts the operating speed of the moving bed 3 according to the first comparison result, the second comparison result and the current temperature of the garbage at the garbage outlet 9, including: calculating the first comparison result equal to the difference between the detected ambient temperature and the called ambient temperature; calculating the second comparison result equal to the difference between the detected light intensity and the called light intensity; calculating the quotient of the absolute value of the second comparison result and the absolute value of the first comparison result to obtain the expected temperature change rate of the garbage at the garbage outlet 9; calculating the expected temperature of the garbage at the garbage outlet 9 equal to the product of the current temperature of the garbage at the garbage outlet 9 multiplied by the expected temperature change rate; and when the product value is less than 42°C, the operating speed of the moving bed 3 slows down, and when the product value is greater than 48°C, the operating speed of the moving bed 3 speeds up.

[0040] In traditional garbage heating technology, the garbage heating device has technical problems such as low energy flow density and high energy consumption. The present invention sets an ambient temperature detector, a light intensity detector and a controller in the garbage heating device, so that the operating speed of the moving bed can be dynamically adjusted according to the temperature changes in the heating bin and at the garbage outlet, thereby maximizing the efficiency of garbage heating and achieving the technical effect of saving energy consumption.

[0041] The following embodiments of the present invention are further described with reference to the accompanying drawings. The following embodiments are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. For those skilled in the art, various changes, modifications, substitutions, and variations arising from the principles and spirit of the present invention are apparent to those skilled in the art. Other variations or modifications may be made based on the following description, and these variations or modifications fall within the scope of protection of the present invention.

[0042] Figure 1 A cross-sectional elevation view of a heating chamber according to an embodiment of the present invention is shown. The figure illustrates a garbage heating device comprising a garbage chamber 1, an air chamber 2, a moving bed 3, a low-power linear Fresnel lens 4, a high-power Fresnel lens 5, a flexible reflective thermal insulation curtain 6, an insulation layer 7, and a drainage pit 8. This invention utilizes a garbage heating device based on linear Fresnel lenses. Due to their compact size, light weight, and low cost, the Fresnel lenses can address the aforementioned technical issues, achieving high energy efficiency, low carbon emissions, environmental protection, and convenient operation while fully utilizing renewable energy.

[0043] Figure 2A side view of a heating chamber according to an embodiment of the present invention is shown. The figure shows that the garbage heating device also includes a garbage inlet 10 and a garbage outlet 9 disposed on the side. The garbage enters the moving bed 3 within the garbage chamber 1 through the garbage inlet 10 and moves toward the garbage outlet 9 until the temperature of the garbage at the garbage outlet 9 reaches 40-50°C. By incorporating an ambient temperature sensor, a light intensity sensor, a controller, and a speed-adjustable moving bed into the garbage heating device, the present invention dynamically adjusts the moving bed's operating speed based on temperature changes within the heating chamber and at the garbage outlet, maximizing garbage heating efficiency and enhancing the activity of microorganisms in the garbage, effectively decomposing the garbage.

[0044] In summary, the related art has problems with garbage heating technology, such as high cost, low energy flow density, high energy consumption, and large floor space. The present invention provides a garbage heating device, comprising: a garbage bin having a garbage inlet on one side and a garbage outlet on the other side; a moving bed located at the bottom of the garbage bin, for driving the garbage from the garbage inlet to the garbage outlet; the garbage heating device also includes a low-power linear Fresnel lens disposed on the top, for heating the garbage using multiple parallel energy-concentrating strip-shaped light spots until the temperature of the garbage at the garbage outlet reaches 40-50°C. The present invention adopts a garbage heating technology based on a linear Fresnel lens, which maximizes the concentration of solar radiation energy at a relatively short focal length to heat the garbage, thereby solving the technical problems of high cost, low energy flow density, high energy consumption, and large floor space in the existing garbage heating technology, and achieving the technical effects of high efficiency, energy saving, low carbon and environmental protection, simple system, and high operation.

[0045] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the invention.

Claims

1. A garbage heating device, comprising: A garbage bin (1), wherein one side of the garbage bin (1) is provided with a garbage inlet (10) and the other side is provided with a garbage outlet (9); A moving bed (3) is located at the bottom of the garbage bin (1) and is used to move garbage from the garbage inlet (10) to the garbage outlet (9); Characterized in that, the garbage heating device further comprises: A low-power linear Fresnel lens (4) is provided on the top, for heating the garbage by using a plurality of parallel focused strip-shaped light spots until the temperature of the garbage at the garbage outlet (9) is 40-50°C; An ambient temperature detector, used to detect the temperature of the environment surrounding the device; a light intensity detector for detecting the light intensity on the surface of the low-power linear Fresnel lens (4); and controller, Used to call the ambient temperature and light intensity of the same period in history, Compare the called ambient temperature with the detected ambient temperature to obtain To the first comparison result, Compare the called light intensity with the detected light intensity and get to the second comparison result, and Calculating the first comparison result to be equal to the difference between the detected ambient temperature and the called ambient temperature; Calculating the second comparison result to be equal to the difference between the detected light intensity and the called light intensity; Calculating a quotient of the absolute value of the second comparison result and the absolute value of the first comparison result to obtain an expected temperature change rate of the garbage at the garbage outlet (9); Calculating the expected temperature of the garbage at the garbage outlet (9) as the product of the current temperature of the garbage at the garbage outlet (9) and the expected rate of change of the temperature; and When the product value is less than 42°C, the operating speed of the moving bed (3) is slowed down, and when the product value is greater than 48°C, the operating speed of the moving bed (3) is accelerated.

2. The device according to claim 1, characterized in that The low-power linear Fresnel lens (4) is arranged on the side of the garbage bin (1).

3. The device according to claim 1, characterized in that It also includes an air bin (2) located at the lower part of the moving bed (3), and a high-power linear Fresnel lens (5) is installed on the side of the air bin (2) for heating the garbage through air convection and radiation heat exchange.

4. The device according to claim 3, characterized in that The moving bed (3) is provided with holes and gaps for draining the garbage.

5. The device according to claim 4, characterized in that A drainage pit (8) is provided at the bottom of the air bin (2) for collecting leachate after the garbage is drained.

6. The device according to claim 3, characterized in that It also includes a heat insulation layer (7) located on the opposite side of the low-power linear Fresnel lens (4) or the high-power linear Fresnel lens (5) to prevent heat loss in the garbage bin (1) and the air bin (2).

7. The device according to claim 6, characterized in that It also includes a flexible reflective heat-insulating curtain (6) located on the surface of the low-power linear Fresnel lens (4) or the high-power linear Fresnel lens (5), which is used to reduce radiation when the solar radiation intensity is too high or to avoid reverse radiation when there is no solar radiation.

8. The device according to any one of claims 1 to 7, characterized in that A sealed heat-insulating door is provided at the garbage inlet (10), which is closed after the garbage feeding is completed, so as to reduce heat loss and odor emission in the garbage bin (1).

Images