Kiln system for heating with a heat accumulator

Abstract

The utility model discloses a kind of kiln systems for heating using heat accumulator, comprising: solar panel;Heat storage device, heat storage device includes heat accumulator, heat accumulator includes air inlet and air outlet, heat accumulator is equipped with heat storage medium and the first electric heater for heating heat accumulator using the electric energy generated by solar panel;Ceramic kiln for heating using heat storage device;First communication pipeline, to connect heat accumulator and ceramic kiln;Second communication pipeline, including air intake air inlet port and air intake air outlet port, air intake air outlet port is connected with air inlet, circulating fan is arranged at air intake air inlet port;Cold air fan and cold air communication pipeline, cold air communication pipeline includes cold air intake air inlet port and cold air outlet port, cold air outlet port is connected with the cold air connection interface to ceramic kiln interior of ceramic kiln being set on ceramic kiln;The cold air fan is set at cold air intake air inlet port of cold air communication pipeline.

Description

Technical Field

[0001] This utility model relates to kiln systems, and in particular to a kiln system that utilizes a heat storage device for heating. Background Technology

[0002] Traditional kilns used for manufacturing ceramics, cement, and other materials typically use natural gas or electricity for heating. However, natural gas is subject to strict management and usage regulations for safety reasons, making its use impractical in many situations. Electric heaters, on the other hand, suffer from long heating times and high costs due to expensive electricity.

[0003] Therefore, there is a demand in the industry for kiln heating systems that are low-cost, have good heating effects, and are easy to use. Utility Model Content

[0004] The present invention aims to overcome the defects of traditional technology and provides a kiln system that uses a heat storage device for heating, which is environmentally friendly, safe to use and low in cost.

[0005] To achieve the above objectives, according to a first aspect of this utility model, a kiln system utilizing a heat storage device for heating is provided, comprising: Solar panels; A thermal storage device, the thermal storage device including a thermal storage unit, the thermal storage unit including an air inlet and an air outlet; The heat storage device contains a heat storage medium and is equipped with a first electric heater inside. The first electric heater uses the electrical energy generated by the solar panel to heat the heat storage device. The air inlet is connected to the air outlet via the heat storage chamber. The air entering the heat storage from the air inlet exchanges heat with the heat storage medium and is then discharged from the air outlet. A ceramic kiln, wherein the ceramic kiln utilizes the thermal energy stored in the heat storage device for heating; The first connecting pipe includes an air inlet port and an air outlet port. The air inlet port is connected to the air outlet of the heat storage device, and the air outlet port is connected to the connecting interface provided on the ceramic kiln leading to the interior of the ceramic kiln. A circulating fan is provided to facilitate the flow of air from the air inlet through the heat storage tank and the first connecting pipe to the connection interface provided on the ceramic kiln. The circulating fan is located at the air inlet, or the circulating fan is connected to the air inlet through a second connecting pipe, the second connecting pipe including an induced draft air inlet port and an induced draft air outlet port, the induced draft air outlet port being connected to the air inlet, and the circulating fan being located at the induced draft air inlet port of the second connecting pipe. The system includes a cold air blower and a cold air connecting pipe. The cold air connecting pipe includes a cold air inlet port and a cold air outlet port. The cold air outlet port is connected to a cold air connection interface on the ceramic kiln that leads to the interior of the ceramic kiln. The cold air blower is located at the cold air inlet port of the cold air connecting pipe to allow cold air to flow from the cold air inlet port through the cold air connecting pipe to the cold air connection interface on the ceramic kiln.

[0006] Preferably, the kiln system further includes a second electric heater, which is connected to the solar panel or to a household power source. The second electric heater is installed in the ceramic kiln and serves as an auxiliary heat source to heat the ceramic kiln.

[0007] Preferably, the first connecting pipeline includes a manifold and multiple branch pipes, one end of the multiple branch pipes is connected to the manifold, and the other end of the multiple branch pipes is connected to multiple connection interfaces provided on the ceramic kiln.

[0008] Preferably, the cold air connection pipeline includes a manifold and multiple branch pipes, one end of the multiple branch pipes is connected to the manifold, and the other end of the multiple branch pipes is connected to multiple cold air connection interfaces provided on the ceramic kiln.

[0009] Preferably, the connection interface and the cold air connection interface are the same interface, and the cold air connecting pipeline includes the manifold and the multiple branch pipes.

[0010] Preferably, the heat storage device includes two heat storage units arranged in parallel, two sets of first connecting pipes and two fans. The two heat storage units are respectively arranged on both sides of the ceramic kiln and connected to the connection interface on the same side of the ceramic kiln leading to the interior of the ceramic kiln through their respective first connecting pipes. Each circulating fan is installed at the air inlet of the corresponding thermal storage unit, or each circulating fan is connected to the air inlet of the corresponding thermal storage unit through its own second connecting pipe.

[0011] Preferably, the ceramic kiln is a drawer kiln or a tunnel kiln.

[0012] Preferably, the ceramic kiln is a roller kiln, and the heat storage device includes multiple heat storage units arranged longitudinally along the roller kiln. Each preheating section and firing section of the roller kiln is equipped with its own heat storage unit, and each heat storage unit is equipped with a circulating fan and connected to the connection interface leading to the interior of the roller kiln on the corresponding kiln section through a first connecting pipe.

[0013] Preferably, the kiln system further includes multiple temperature sensors and an automatic circuit controller. The multiple temperature sensors are respectively installed in each kiln section to detect the temperature in the corresponding kiln section. The automatic circuit controller is connected to the multiple temperature sensors to receive the temperature signals detected by the temperature sensors in each kiln section. If the temperature in the preheating section or firing section deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the circulating fan of the heat storage tank corresponding to the kiln section to adjust the air intake so that the temperature in the kiln section meets the temperature requirements. If the temperature in the cooling section of the roller kiln deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the cooling fan to adjust the air intake so that the temperature in the kiln section meets the temperature requirements.

[0014] Preferably, the kiln system further includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed inside the ceramic kiln to detect the temperature inside the kiln. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. During the heating and holding stages, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the speed of the circulating fan to adjust the air intake so that the temperature inside the kiln meets the temperature requirements. During the cooling stage, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the speed of the cooling fan to adjust the air intake so that the temperature inside the kiln meets the temperature requirements.

[0015] Preferably, the kiln system further includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed inside the ceramic kiln to detect the temperature inside the kiln. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. During the heating and holding stages, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the circulating fan to adjust the air intake and / or controls the operation of the second electric heater to make the temperature inside the kiln meet the temperature requirements. During the cooling stage, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the cooling fan to adjust the air intake to make the temperature inside the kiln meet the temperature requirements.

[0016] According to a second aspect of the present invention, a kiln system for heating using a heat storage device is provided, comprising: Solar panels; A thermal storage device, comprising a first thermal storage unit, the first thermal storage unit including an air inlet and an air outlet; The first thermal storage device contains a thermal storage medium and is equipped with an electric heater inside. The electric heater uses the electrical energy generated by the solar panel to heat the first thermal storage device. The air inlet is connected to the air outlet via the first heat storage chamber. The air entering the first heat storage chamber from the air inlet exchanges heat with the heat storage medium and is then discharged from the air outlet. A cement kiln, wherein the cement kiln utilizes the heat energy stored in the heat storage device for heating; The first connecting pipe includes a first air inlet port and an air outlet port. The first air inlet port is connected to the air outlet of the first heat storage unit, and the air outlet port is located at the longitudinal end of the cement kiln. A circulating fan is provided to facilitate airflow from the air inlet through a first heat storage tank and a first connecting pipe to the air outlet. The circulating fan is located at the air inlet, or the circulating fan is connected to the air inlet via a second connecting pipe, the second connecting pipe including an induced draft air inlet port and a first induced draft air outlet port, the first induced draft air outlet port being connected to the air inlet port, and the circulating fan being located at the induced draft air inlet port.

[0017] Preferably, the first connecting pipe includes a first air outlet pipe and an air guide pipe; one end of the first air outlet pipe forms the first air inlet port of the first connecting pipe; the other end of the first air outlet pipe is connected to one end of the air guide pipe, and the other end of the air guide pipe forms the air outlet port of the first connecting pipe.

[0018] Preferably, the first air outlet duct and the air guide duct are an integral pipe fitting.

[0019] Preferably, the circulating fan is connected to the air inlet through a second connecting pipe. The second connecting pipe includes a first air inlet pipe and an exhaust pipe. One end of the first air inlet pipe forms the first exhaust outlet port of the second connecting pipe, and the other end of the first air inlet pipe is connected to one end of the exhaust pipe. The other end of the exhaust pipe forms the exhaust inlet port of the second connecting pipe.

[0020] Preferably, the first air inlet pipe and the exhaust pipe are an integral pipe fitting.

[0021] Preferably, the kiln system using a heat storage device for heating further includes a pulverized coal supply device that delivers pulverized coal to the longitudinal end of the cement kiln via a coal feeding pipe.

[0022] Preferably, the kiln system using a heat storage device for heating further includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed at a certain location along the longitudinal direction of the kiln to detect the temperature inside the kiln at that location. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. If the detected temperature inside the kiln deviates from the required temperature, the automatic circuit controller controls the rotation speed of the circulating fan to adjust the air intake so that the temperature inside the kiln meets the temperature requirements.

[0023] Preferably, the kiln system using a heat storage device for heating further includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed at a certain location along the longitudinal direction of the kiln to detect the temperature inside the kiln at that location. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. If the detected temperature inside the kiln deviates from the required temperature, the automatic circuit controller controls the rotation speed of the circulating fan to adjust the air intake and / or control the coal powder supply to ensure that the temperature inside the kiln meets the temperature requirements.

[0024] Preferably, the circulating fan is connected to the air inlet via a second connecting pipe. The kiln system using a heat storage device for heating further includes a second heat storage device, which serves as a backup heat storage device. The first connecting pipe also includes a second air inlet port, which is connected to the air outlet of the second heat storage device. The second connecting pipe also includes a second induced draft air outlet port, which is connected to the air inlet of the second heat storage device. Valves are installed on both the first and second connecting pipes, and the opening or closing state of the valves is used to select either the first or second heat storage device.

[0025] By adopting the technical solution of this utility model, solar energy is used as the basic energy source, which greatly reduces the cost of firing kilns; moreover, it is safe to use, easy to construct, and applicable to a wide range of environments. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, wherein... Figure 1 This is a perspective view illustrating the overall structure of a kiln system using a heat storage device for heating according to the first embodiment of the present invention. Figure 2 It's a perspective view, illustrating the scene from another angle. Figure 1 The kiln system shown; Figure 3 This is a schematic diagram of the temperature curve inside the ceramic kiln during the ceramic firing process; Figure 4 This is the front view of the thermal storage unit; Figure 5 It is along Figure 4 A cross-sectional view taken along line AA in the middle; Figure 6 It is along Figure 4 Enlarged sectional view taken from the CC line; Figure 7 This is a perspective view illustrating the overall structure of a kiln system using a heat storage device for heating according to a second embodiment of the present invention. Figure 8This is a schematic diagram of the temperature curve inside the cement kiln during cement firing. The right side of the curve is the side where the air outlet of the air duct is located. Figure 9 This is a perspective view illustrating the overall structure of a kiln system using a heat storage device for heating according to a third embodiment of the present invention. Figure 10A yes Figure 9 A partial enlarged view of the portion indicated by reference numeral I in the attached figure; Figure 10B It is along Figure 10A A sectional view taken by the BB line; and Figure 11 This is a perspective view illustrating the overall structure of a kiln system using a heat storage device for heating according to the fourth embodiment of the present invention. Detailed Implementation

[0027] The kiln system of this utility model, which utilizes a heat storage device for heating, will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of this utility model are merely illustrative and are only used to explain the principles of this utility model, not to limit it.

[0028] First see Figure 1 The diagram illustrates the overall structure of a kiln system heated by a heat storage device according to the first embodiment of the present invention in perspective view form. Figure 1 The kiln system 100 shown is a kiln system for manufacturing ceramics, which uses a heat storage device for heating. It includes a solar power generation device 5, a heat storage device 1, and a ceramic kiln 2.

[0029] Solar power generation devices can be, for example, solar panels. Thermal storage device 1 is used to store thermal energy. Figure 1 In the embodiment shown, the heat storage device 1 includes two sets of heat storage units, namely a first heat storage unit 11 and a second heat storage unit 12. The two sets of heat storage units can adopt the same structure, and one of the two sets of heat storage units, such as the second heat storage unit 12, can be used as a backup heat storage unit.

[0030] like Figure 1 As shown, each group of thermal storage units includes three thermal storage furnaces 111, which are stacked one on top of the other. Each thermal storage furnace 111 is equipped with one or more first electric heaters 80 (see [link to documentation]). Figure 5 and Figure 6 The first electric heater uses the electrical energy generated by the solar power generation device to heat the thermal storage furnace. The first electric heater is installed inside the thermal storage furnace. Figure 4 and Figure 5As shown, the thermal storage furnace 111 includes a shell 120 and a furnace cover 130. A terminal block 510 is provided on the furnace cover 130. One end of the terminal block is used to connect to, for example, a solar power generation device, and the other end is connected to a first electric heater 80 located inside the thermal storage furnace 111. Each thermal storage furnace 111 is equipped with an air inlet 620 and an air outlet 640 (see [link to documentation]). Figures 4-6 The air inlet 620 is connected to the air outlet 640 via the heat storage furnace cavity; in each group of heat storage units, three heat storage furnaces 111 stacked vertically are connected in series, please refer to Figure 1 and Figure 2 The air outlet of the lowest heat storage furnace is connected to the air inlet of the centrally located heat storage furnace through pipe 13, and the air outlet of the centrally located heat storage furnace is connected to the air inlet of the highest heat storage furnace through pipe 14. Thus, the air inlet of the lowest heat storage furnace constitutes the air inlet of the heat storage unit, and the air outlet of the highest heat storage furnace constitutes the air outlet of the heat storage unit.

[0031] The ceramic kiln 2 is used to place the ceramic blanks to be fired and to fire the ceramics. The ceramic kiln is heated by heat stored in a first heat storage tank or a second heat storage tank. The ceramic kiln 2 can be, for example, a drawer kiln or a tunnel kiln, the structure of which is well known to those skilled in the art, and its description is omitted here.

[0032] The heat storage device 1 and the ceramic kiln 2 are connected by a first connecting pipe 3, such as a refractory brick pipe. Because the temperature of the first connecting pipe is very high, to reduce heat exchange with the outside environment and to prevent burns to personnel, as a preferred solution, the exposed portion of the first connecting pipe 3 is covered with an insulation layer. In the illustrated embodiment, the first connecting pipe includes two air inlet ports and multiple air outlet ports. The two air inlet ports are respectively connected to the air outlets of the first heat storage device 11 and the second heat storage device 12, and the multiple air outlet ports are correspondingly connected to multiple connection interfaces on the kiln leading to the interior of the ceramic kiln.

[0033] The first connecting pipe 3 includes a first air outlet pipe 22A, a second air outlet pipe 22B, a guide pipe 23, a manifold 25, and a branch pipe 26. One end of the first air outlet pipe 22A is connected to the air outlet of the first heat storage tank 11, i.e., the air outlet 640 of the uppermost heat storage furnace (see [link]). Figures 4-6The first air inlet port of the first connecting pipe is connected to the air outlet of the second heat storage unit 12, i.e., the air outlet 640 of the uppermost heat storage furnace, and forms the second air inlet port of the first connecting pipe. The other ends of the first air outlet pipe and the other ends of the second air outlet pipe are connected to one end of the air guide pipe 23 by a tee 27. Valves 28 are respectively provided on the three ports of the tee 27. The purpose of setting three valves 28 is to select whether the air outlet of the first heat storage unit 11 is connected to the air guide pipe or the air outlet of the second heat storage unit 12 is connected to the air guide pipe by selecting their opening and closing states, and to isolate the air outlet of the first heat storage unit 11 and / or the air outlet of the second heat storage unit 12 from the outside when needed. Therefore, there are various forms of valve setting, as long as the expected purpose is achieved. The specific setting form is within the scope of common knowledge of those skilled in the art. For example, the valve located at one end of the air guide pipe 23 can be omitted. In the illustrated embodiment, the first connecting pipe 3 includes two manifolds 25, which are located on the horizontal sides of the ceramic kiln 2 and extend along the longitudinal direction of the ceramic kiln 2. The first manifold is connected to the other end of the air guide pipe 23, and the second manifold is connected to the air guide pipe at a certain point between the two ends of the air guide pipe 23.

[0034] Each manifold 25 is equipped with multiple branch pipes 26. As shown in the figure, each manifold has six branch pipes. One end of each branch pipe is connected to the manifold 25, and the other end is connected to multiple connection interfaces on the ceramic kiln 2. The other end of each branch pipe forms the air outlet port of the first connecting pipe. To heat the ceramic kiln 2 as evenly as possible, in... Figure 1 In the illustrated embodiment, each manifold is equipped with branch pipes in two groups. The first group consists of three short branch pipes connected to the connection interface located at the upper part of the ceramic kiln 2. The second group consists of three long branch pipes connected to the connection interface located at the lower part of the ceramic kiln 2. The short and long branch pipes are arranged alternately along the longitudinal direction, thereby ensuring that the ceramic kiln 2 is heated as evenly as possible. It should be noted that the number of branch pipes, the structural form of the branch pipes, and the layout of the ceramic kiln connection interface can be changed, and are not limited to the specific form shown in the figure. The basic principle is to ensure uniform heating inside the ceramic kiln 2. In addition, the number of manifolds can be one or more, and the arrangement can be specifically designed according to the form of the ceramic kiln 2.

[0035] Please see Figure 2 The first thermal storage unit 11 and the second thermal storage unit 12 are equipped with air inlets 620 (see [link]). Figures 4-6The ceramic kiln includes a second connecting pipe, which includes an induced draft inlet port, a first induced draft outlet port, and a second induced draft outlet port. The second connecting pipe includes a first inlet pipe 27A, a second inlet pipe 27B, and an induced draft pipe 29. One end of the first inlet pipe 27A is connected to the inlet of the first heat storage tank 11 and forms the first induced draft outlet port of the second connecting pipe. This inlet is connected to the outlet of the first heat storage tank 11 via the inner cavity of each heat storage furnace in the first heat storage tank 11 and pipes 13 and 14. Similarly, one end of the second inlet pipe 27B is connected to the inlet of the second heat storage tank 12 and forms the second induced draft outlet port of the second connecting pipe. This inlet is connected to the outlet of the second heat storage tank 12. The other ends of the first air inlet pipe 27A and the second air inlet pipe 27B are connected to one end of the exhaust pipe 29 via a tee 33. Each of the three ports of the tee 33 is equipped with a valve 32. These three valves 32 are used to select whether the air inlet of the first heat storage unit 11 or the air inlet of the second heat storage unit 12 is connected to the exhaust pipe 29 by choosing their open / closed state. They also isolate the air inlets of the first heat storage unit 11 and / or the second heat storage unit 12 from the outside when necessary. Therefore, the valve configuration can vary, as long as the intended purpose is achieved. The specific configuration falls within the scope of common knowledge for those skilled in the art. For example, the valve at one end of the exhaust pipe 29 can be omitted. The other end of the exhaust pipe 29 constitutes the exhaust port of the second connecting pipe. Specifically, at the air intake port of the second connecting pipe, a circulating fan 31 is provided at the other end of the air intake pipe 29. The circulating fan 31 is used to realize the flow of air from the air intake port of the second connecting pipe through the first air intake pipe 27A of the second connecting pipe, the first heat storage device and the first connecting pipe to the connection interface provided on the ceramic kiln, or to realize the flow of air from the air intake port of the second connecting pipe through the second air intake pipe 27B of the second connecting pipe, the second heat storage device and the first connecting pipe to the connection interface provided on the ceramic kiln.

[0036] As a preferred technical solution, a filter screen can be installed at the inlet end of the exhaust duct 29 or the air inlet of the circulating fan 31 to filter out dust and other impurities contained in the air.

[0037] See also Figure 1 and Figure 2The ceramic kiln 2 is equipped with a cold air fan 35 and a cold air connecting pipe. The cold air connecting pipe includes a cold air inlet port and a cold air outlet port. The cold air outlet port is connected to a cold air connection interface on the ceramic kiln leading to the interior of the kiln. The cold air fan is located at the cold air inlet port of the cold air connecting pipe to allow cold air to flow from the cold air inlet port through the cold air connecting pipe to the cold air connection interface on the ceramic kiln, supplying cold air into the kiln. The cold air fan 35 can be connected to the interior of the ceramic kiln 2 through an independent cold air connecting pipe, with a structure similar to the connection structure between the heat storage tank and the ceramic kiln 2; or it can share a connecting pipe with the heat storage tank. Figure 1 and Figure 2 The diagram illustrates an exemplary structure of a shared connecting pipe, such as... Figure 2 As shown, the air cooler 35 is installed at the air inlet end of the air inlet duct 36. The air inlet end of the air inlet duct 36 constitutes the air inlet port of the air inlet connecting pipeline. A filter screen can be installed at the air inlet end of the air inlet duct or the air inlet of the air cooler 35 to filter out dust and other impurities contained in the air. The air outlet end of the air inlet duct 36 is connected to the air guide duct 23 between the two manifolds. A valve 30 is installed between the air outlet end of the air inlet duct and the air cooler to control the disconnection and connection between the air outlet end of the air inlet duct and the air cooler. Accordingly, in the case of a shared connecting pipeline, the cold air connecting pipeline includes a cold air inlet pipe 36, an air guide pipe 23, a manifold 25, and multiple branch pipes 26. The outlet end of the cold air inlet pipe 36 is connected to the air guide pipe 23. The inlet end of the cold air inlet pipe constitutes the cold air inlet port of the cold air connecting pipeline, and the outlet end of the branch pipe constitutes the cold air outlet port of the cold air connecting pipeline. In addition, in the case of a shared connecting pipeline, the connection interface on the ceramic kiln mentioned above is the same interface as the cold air connection interface.

[0038] The following reference Figures 4-6 A brief description of the structure of the thermal storage furnace is provided.

[0039] like Figures 4-6 As shown, the thermal storage furnace 111 includes a shell 120 and a cover 130. A terminal block 510 is provided on the cover 130. One end of the terminal block is connected to a power source, and the other end is connected to an electric heater 80 located inside the thermal storage furnace. Refractory bricks 55 and 56 are arranged inside the shell. The shell 120 can be a single-layer structure, for example, made of steel plate, or it can be a double-layer or multi-layer structure. The illustrated embodiment is a double-layer structure, including an outer layer 121 and an inner layer 122. The outer layer 121 can be made of steel plate, while the inner layer 122 is an insulation layer, which can be made of, for example, insulation cotton.

[0040] The refractory bricks are used as a heat storage medium. The refractory bricks have good thermal stability and good heat storage performance. They can withstand various physical and chemical changes and mechanical effects at high temperatures. The refractory bricks can be selected from those used in the construction of kilns and various thermal equipment. Figure 5 and Figure 6 The illustration schematically depicts an arrangement of refractory bricks in a thermal storage furnace, including refractory bricks 55 disposed around the inner wall, bottom, and top of the furnace shell 120, thereby forming a cavity enclosed by the refractory bricks 55; and multiple rows of refractory bricks 56 arranged within the cavity, each row preferably extending vertically from the bottom to the top of the cavity. Figure 6 As shown, each row of refractory bricks has 56 bricks along the transverse direction ( Figure 6 The refractory bricks are staggered and spaced apart from each other in the left and right directions. The refractory bricks 56 at the left and right ends are separated from the refractory bricks 55 on the outside, thus forming a meandering air travel path. This allows the air entering the thermal storage furnace from the air inlet 620 to travel along the meandering path and then be discharged from the air outlet 640 of the thermal storage furnace, thereby achieving full heat exchange between the air and the refractory bricks.

[0041] See also Figures 4-6 The air inlet 620 of the thermal storage furnace is located laterally within the cavity. Figure 6 The air inlet and outlet of the thermal storage furnace are located at one end (left-right direction), while the air outlet 640 of the thermal storage furnace is located at the other end (lateral direction). The air inlet and outlet of the thermal storage furnace are spaced apart vertically. As a preferred embodiment, such as... Figures 4-6 As shown, the air outlet 640 of the thermal storage furnace is located at the top of the cavity, while the air inlet 620 of the thermal storage furnace is located at the bottom of the cavity.

[0042] It should be noted that the arrangement of refractory bricks within the furnace shell 120 can take various forms, and is not limited to the specific form described above. Similarly, the locations of the furnace air inlet and outlet can be selected based on specific circumstances. Figures 4-6 In the illustrated embodiment, the air inlet 620 and the air outlet 640 are located on the same side of the thermal storage furnace. Figure 4 The image shown is on the front (of the image), but this is just an example illustrating the placement of the air inlet 620 and air outlet 640. In reality, the placement of the air inlet 620 and air outlet 640 can be changed arbitrarily; for example, the air inlet 620 and air outlet 640 can be set separately in... Figure 4 On the left and right sides of the central thermal storage furnace ( Figure 1 and Figure 2 The thermal storage furnace in the middle adopts this structure), or the air inlet 620 and air outlet 640 are respectively set at Figure 4 On the front and rear sides of the central thermal storage furnace, etc.; in addition, the upper and lower positions of the air inlet 620 and the air outlet 640 can also be interchanged.

[0043] In the illustrated embodiment, the heat storage furnace shell 120 is square, but the present invention is not limited to this. The heat storage furnace shell 120 may also be other shapes, such as circular. In addition, the cavity may also be other shapes, such as circular.

[0044] See also Figures 4-6 The thermal storage furnace cover 130 is provided with a terminal block 510. One end of the terminal block is used to connect to, for example, a solar power generation device, and the other end is connected to an electric heater 80 disposed inside the thermal storage furnace. The electric heater 80 can be in the form of various heating elements, such as heating wires or heating rods. The electric heater is fixedly mounted on the cover 130 or fixedly mounted on the refractory bricks 55 covering the top of the housing 120, and extends downward into the cavity through the gaps between the refractory bricks. One or more heating elements can be provided, which can be selected according to the specific structure. The illustrated technical solution uses multiple heating elements. It should be noted that in the illustrated embodiment, the terminal block 510 is disposed on the thermal storage furnace cover 130 and extends from the top of the thermal storage furnace, but the present invention is not limited to this. The terminal block can also be disposed in other positions in the thermal storage furnace, such as disposed on the side of the thermal storage furnace and extending from the side.

[0045] As a preferred technical solution, a high-temperature fuse can be installed inside the thermal storage furnace to control the temperature inside the furnace. The high-temperature fuse is installed on the line connecting the electric heater 80 and the power supply. When the internal temperature of the thermal storage furnace exceeds a preset value, such as 1200°C, the fuse melts to cut off the connection circuit between the power supply and the electric heater, thereby protecting the thermal storage furnace from damage.

[0046] The operation of the kiln system of this utility model, which utilizes a heat storage device for heating, will be described below.

[0047] Please see Figure 1During the day, under sunlight, the solar power generation device generates electricity, which in turn powers the first electric heater 80 connected to the solar power generation device, generating heat. This heat is absorbed and stored by the heat storage medium in the heat storage furnace, thus storing sufficient thermal energy in the heat storage device 1. When ceramic firing is required, one of the heat storage devices, such as the first heat storage device 11, is activated. By setting the opening and closing states of valves 28 and 32, the air inlet and outlet of the first heat storage device 11 are connected to the air intake pipe 29 and the air guide pipe 23, respectively, while the air inlet and outlet of the second heat storage device 12 are disconnected from the air intake pipe 29 and the air guide pipe 23, respectively. After placing the products and kiln furniture in the kiln, the circulating fan 31 is started, causing airflow to enter the first heat storage tank 11 from the induced draft pipe 29 via the inlet pipe 27A and the inlet of the first heat storage tank (in the first heat storage tank 11, the airflow first flows through the lowest heat storage furnace, is heated, and then enters the middle heat storage furnace through pipe 13 for further heating, and then enters the uppermost heat storage furnace through pipe 14 for reheating). The air entering the first heat storage tank through the inlet of the first heat storage tank exchanges heat with the heat storage medium and is discharged from the outlet of the first heat storage tank 11, and enters the kiln 2 through the first outlet pipe 22A, the guide pipe 23, the manifold 25 and the various branch pipes 26 to heat the kiln. The kiln is maintained in a slightly positive pressure environment. An exhaust duct is set at the bottom of the kiln, and the hot air in the kiln is discharged through the exhaust duct (flue).

[0048] During the firing of ceramics in a kiln, the temperature inside the kiln must meet the required standards. Figure 3 The desired furnace temperature curve is schematically illustrated. According to this curve, the furnace temperature undergoes three stages: a heating stage, a holding stage, and a cooling stage. During the heating stage, the circulating fan 31 introduces hot air into the kiln, gradually raising the furnace temperature to the desired level, such as 1230-1250 degrees Celsius. During the holding stage, the furnace temperature can be maintained at the predetermined value by reducing the air intake. During the cooling stage, the circulating fan 31 stops operating, and cold air is supplied to the kiln via the cooling fan 35.

[0049] To control the temperature inside the kiln to meet a specific temperature curve, temperature sensors, such as thermocouples, can be installed inside the kiln to detect the temperature. The kiln system 100, which uses a heat storage tank for heating, also includes an automatic circuit controller (not shown in the figure). The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. During the heating and holding stages, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the circulating fan 31 to adjust the air intake to ensure that the temperature inside the kiln meets the requirements. During the heating and holding stages, hot air is supplied to the kiln using the circulating fan. At the end of the holding stage, the circulating fan stops working, thus stopping the supply of hot air to the kiln. The air inlet and outlet of the first heat storage tank 11 are disconnected from the induced draft pipe 29 and the guide pipe 23, respectively, by setting the opening and closing states of valves 28 and 32. During the cooling phase, valve 30 is opened and a cooling fan is started to supply cold air into the kiln for cooling. If the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller adjusts the speed of the cooling fan to regulate the air intake, so that the temperature inside the kiln basically meets the temperature requirements. Valve 30 can be operated manually or automatically controlled by the automatic circuit controller. The valve opens at the end of the heat preservation phase.

[0050] As a preferred technical solution, a second electric heater can be installed inside the kiln as an auxiliary heat source to heat the ceramic kiln. The second electric heater can be powered by mains electricity or by a solar panel. The operation of the kiln system using the second electric heater as an auxiliary heat source is as follows.

[0051] First, the circulating fan 31 is started, causing airflow to enter the heat storage tank 1 through the air inlet pipe. After being heated in the heat storage tank 1, the airflow exits from the air outlet of the heat storage tank 1 and flows through the air outlet pipe, guide pipe, manifold, and various branch pipes into the kiln to heat the kiln. When the desired temperature (which corresponds to the highest heating temperature achievable by the heat storage device 1), such as 1200 degrees Celsius, the second electric heater is activated to continue heating until the heating phase ends. During the heating phase, the furnace temperature is monitored, and the speed of the circulating fan and / or the operation of the second electric heater (e.g., connecting or disconnecting it from the power supply) are controlled by an automatic circuit controller to meet the furnace temperature requirements. During the heat preservation phase, the required furnace temperature is achieved by controlling the speed of the circulating fan and / or the operation of the second electric heater using the automatic circuit controller. At the end of the heat preservation phase, the second electric heater and the circulating fan are shut off. During the cooling stage, cold air is supplied to the kiln by opening valve 30 and starting the air cooler 35. If the temperature inside the kiln deviates from the expected temperature, the speed of the air cooler is controlled by the automatic circuit controller to adjust the air intake so that the temperature inside the kiln meets the temperature requirements.

[0052] In addition, when using a second electric heater, as an alternative technical solution, the kiln can also be heated simultaneously by both the heat storage tank and the second electric heater throughout the heating phase.

[0053] When the kiln system using heat storage tanks for heating is operating, the first heat storage tank 11 is activated. If, due to various reasons such as a malfunction of the first heat storage tank 11 or insufficient temperature, the second heat storage tank 12 can be activated by switching valves 28 and 32, thereby ensuring smooth production. Temperature sensors can be installed in heat storage tanks 11 and 12 to detect the temperature inside the furnace. The automatic circuit controller is connected to these temperature sensors to receive the temperature signals detected by the sensors. When the temperature inside heat storage tank 11 is insufficient, the second heat storage tank 12 can be activated by switching valves 28 and 32.

[0054] The kiln system using heat storage tanks described above employs two heat storage tanks, but this utility model is not limited to this. As a modification of the above embodiment, the kiln system using heat storage tanks may be equipped with only one heat storage tank. When only one heat storage tank is provided, the heat storage tank 12 and the corresponding second air outlet pipe 22B and second air inlet pipe 27B are omitted. The first air outlet pipe 22A is connected to the air guide pipe 23, or the first air outlet pipe 22A and the air guide pipe 23 may also be an integral pipe fitting. The valve 28 is installed on the first air outlet pipe 22A or the air guide pipe 23. The induced draft pipe 29 is connected to the first air inlet pipe 27A, or the induced draft pipe 29 and the first air inlet pipe 27A may also be an integral pipe fitting. The valve 32 is installed on the induced draft pipe 29 or the first air inlet pipe 27A.

[0055] In the aforementioned kiln system utilizing a heat storage device for heating, heat storage devices 11 and 12 each include three heat storage furnaces 111, which are stacked vertically and connected in series. As a modification of the above technical solution, each heat storage device may include two or more heat storage furnaces 111; alternatively, each heat storage device may include only one heat storage furnace 111, with the furnace's inlet and outlet forming the corresponding heat storage device's inlet and outlet, respectively. Therefore, in this application, the term "heat storage device" encompasses all of the aforementioned scenarios.

[0056] It should be noted that the essence of this utility model lies in using a heat storage device as a heat source or one of the heat sources to heat the kiln system, rather than in the specific structural form of the heat storage device. Heat storage devices of various structural forms can be used in this utility model. Therefore, this utility model does not specifically limit the specific structure of the heat storage device.

[0057] The following reference Figures 7-8The present invention describes a kiln system that uses a heat storage device for heating according to a second embodiment of the present invention. The kiln system that uses a heat storage device for heating according to the second embodiment is a kiln system for manufacturing cement.

[0058] Figure 7 The cement kiln system shown includes a solar power generation device 5, a heat storage device 1, and a cement kiln 52. The cement kiln 52 is used to burn cement, heated by heat energy stored in the heat storage device; its structure is well known to those skilled in the art and its description is omitted here. Similar to the first embodiment described above, the cement kiln system employs two heat storage devices 11 and 12, one of which serves as a backup heat storage device. Figure 7 In the cement kiln system shown, the same components as those in the first embodiment described above are indicated by the same reference numerals and their descriptions are omitted. The differences between the two will be explained below.

[0059] like Figure 7 As shown, the heat storage device 1 and the cement kiln 52 are connected by a first connecting pipe 53. The first connecting pipe includes two air inlets and one air outlet. The two air inlets are connected to the air outlets of the first heat storage device 11 and the second heat storage device 12, respectively, while the air outlet 60 is located at the end of the cement kiln 52. The first connecting pipe includes a first air outlet pipe 57A, a second air outlet pipe 57B, and a guide pipe 58. One end of the first air outlet pipe 57A is connected to the air outlet of the first heat storage device 11 and forms the first air inlet of the first connecting pipe 53, while one end of the second air outlet pipe 57B is connected to the air outlet of the second heat storage device 12 and forms the second air inlet of the first connecting pipe 53. The other ends of the first air outlet pipe, the second air outlet pipe, and one end of the guide pipe are interconnected, and the other end of the guide pipe 58 forms the air outlet 60 of the first connecting pipe. A valve 66 is provided on the air duct 58. As an alternative technical solution, valves 67 and 68 can also be provided on the first air outlet duct 57A and the second air outlet duct 57B respectively; or valves 67 and 68 can be provided on the first air outlet duct 57A and the second air outlet duct 57B without valve 66.

[0060] During cement firing in a kiln, the furnace temperature must meet the required standards. Figure 8The solid line schematically illustrates the required furnace temperature curve. To control the furnace temperature to meet requirements, a temperature sensor, such as a thermocouple, can be installed at a location along the longitudinal direction of the furnace to detect the furnace temperature at that location. An automatic circuit controller is connected to the temperature sensor to receive the temperature signal and compare the detected temperature with a temperature reference value, which corresponds to the temperature value at the location on the required furnace temperature curve corresponding to the location detected by the temperature sensor. If the detected furnace temperature deviates from the temperature reference value, the automatic circuit controller can adjust the air intake by controlling the rotation speed of the circulating fan 31 to ensure the furnace temperature meets requirements. For example, if the furnace temperature detected by the temperature sensor at the corresponding location is lower than the temperature reference value, the furnace temperature curve will show... Figure 8 The temperature curve shown by the dashed line can be corrected in this case by increasing the air intake of the circulating fan 31, so that the temperature curve appears to be or is close to the desired temperature. Figure 8 The temperature curve represented by the solid line.

[0061] The operation of the kiln system for manufacturing cement according to the second embodiment is as follows.

[0062] First, when cement firing is required, one of the heat storage tanks, such as the first heat storage tank 11, is activated. By setting the opening and closing states of various valves 32, the air inlet of the first heat storage tank 11 is connected to the induced draft pipe 29, while the air inlet of the second heat storage tank 12 is disconnected from the induced draft pipe 29. Simultaneously, valves 66 and 67 are set to the open state, and valve 68 is set to the closed state. Then, the circulating fan 31 is started, causing airflow to enter the first heat storage tank 11 from the first air inlet pipe 27A. After being heated in the first heat storage tank 11, the airflow is discharged from the air outlet of the heat storage tank 11 and enters the guide pipe 58 through the first air outlet pipe 57A. Then, it is sprayed into the kiln 52 through the air outlet port 60 to heat the kiln. During heating, the temperature inside the kiln is detected by the aforementioned temperature sensor, and the operation of the circulating fan is controlled by the automatic circuit controller to achieve the required temperature inside the kiln. Once the temperature inside the kiln meets the requirements, cement firing can begin.

[0063] When the temperature inside the heat storage tank 11 is insufficient or a malfunction occurs, the second heat storage tank 12 can be activated by setting the opening and closing status of each valve 32 and the opening and closing status of valves 66-68.

[0064] As a preferred technical solution, the kiln system for manufacturing cement according to the second embodiment can be equipped with a pulverized coal supply device. This technical solution can be used as an auxiliary heating method when the temperature requirement cannot be met by using a heat storage device alone.

[0065] like Figure 7As shown, the pulverized coal supply device includes a coal bunker 61, a coal chute 62, a coal feeding pipe 81, and a blower 69. The coal chute 62 is connected to the coal feeding pipe 81, and a valve 63, such as a gate valve, can be installed on the coal chute 62 to control its opening and closing. A blower 69 is installed at one end of the coal feeding pipe 81 away from the cement kiln 52, and the other end is located at the end of the cement kiln 52 and is installed parallel to the air guide pipe 58. In addition, a valve 77 can be installed on the coal feeding pipe 81.

[0066] Powdered coal in coal bunker 61 is fed to coal feeding pipe 81 via coal drop pipe 62. The powdered coal entering coal feeding pipe 81 is ejected from the outlet of the pipe by the airflow generated by the blower and ignited by the hot airflow from the guide pipe. The powdered coal supply device can be any existing powdered coal supply device used in cement kilns that utilize powdered coal as fuel. These devices are well known to those skilled in the art, and their description is omitted for brevity. The kiln system using the powdered coal supply device operates as follows.

[0067] First, the circulating fan 31 is started, causing airflow to enter the heat storage tank 11 from the first air inlet pipe 27A. After being heated in the heat storage tank 11, the airflow is discharged from the air outlet of the heat storage tank 11 and enters the guide pipe 58 through the first air outlet pipe 57A. Then, it is injected into the kiln through the air outlet 60 of the guide pipe. Simultaneously, or when necessary, the pulverized coal supply device is started to supply pulverized coal. After entering the coal feeding pipe 81, the supplied pulverized coal is driven by the airflow generated by the blower 69 and sprayed out from the air outlet of the coal feeding pipe. The sprayed pulverized coal is ignited by the hot airflow from the guide pipe. During heating, the temperature inside the kiln is detected by the aforementioned temperature sensor. If the detected temperature inside the kiln deviates from the required temperature, the speed of the circulating fan is controlled by the automatic circuit controller to adjust the air intake and / or control the pulverized coal supply to ensure that the temperature inside the kiln meets the requirements.

[0068] Similar to the first embodiment described above, the kiln system of the second embodiment, which utilizes a heat storage device for heating, may only be equipped with one heat storage device, such as the first heat storage device 11. The second heat storage device 12 and the corresponding pipes 57B and 27B can be omitted. In this case, the first air outlet pipe 57A and the air guide pipe 58 can be a single integrated pipe, as can the first air inlet pipe 27A and the induced draft pipe 29. Furthermore, each heat storage device may also include two or more heat storage furnaces 111.

[0069] The following is combined with Figure 9 , Figure 10A and Figure 10B The overall structure of a kiln system using a heat storage device for heating according to a third embodiment of the present invention is described. Similar to the first embodiment, the kiln system 300 of the third embodiment using a heat storage device for heating is a kiln system for manufacturing ceramics, including a solar power generation device 5, a heat storage device 301, and a ceramic kiln 302.

[0070] exist Figure 9 In the illustrated embodiment, the heat storage device 301 includes two sets of heat storage units, namely heat storage unit 311 and heat storage unit 312 arranged side by side, respectively located on both sides of the ceramic kiln 302, and both operate simultaneously. The two sets of heat storage units can adopt the same structure, therefore, only heat storage unit 311 will be described below.

[0071] The heat storage tank 311 and the ceramic kiln 302 are connected by a first connecting pipe 303. In the illustrated embodiment, the first connecting pipe includes an air inlet port and multiple air outlet ports. The air inlet port is connected to the air outlet of the heat storage tank 311, and the multiple air outlet ports are correspondingly connected to multiple connection interfaces provided on the kiln leading to the interior of the ceramic kiln.

[0072] The first connecting pipe 303 includes an air outlet pipe 322 and a branch pipe 326. The air outlet pipe 322 also serves as a manifold, with one end connected to the air outlet of the heat storage tank 311 and forming the air inlet of the first connecting pipe. A valve 328 is provided on the air outlet pipe 322 to isolate the heat storage tank 311 from the ceramic kiln when necessary. In the illustrated embodiment, the air outlet pipe 322 is located on the transverse side of the ceramic kiln 302 and extends longitudinally along the ceramic kiln.

[0073] The outlet duct 322, used as a manifold, is equipped with multiple branch ducts 326. As shown in the figure, the outlet duct 322 has ten branch ducts. One end of each branch duct is connected to the outlet duct 322, and the other end is connected to multiple connection interfaces provided on the ceramic kiln 302. The other end of each branch duct forms the outlet port of the first connecting pipe. To heat the ceramic kiln as evenly as possible, in... Figure 9 In the illustrated embodiment, the branch pipes of the manifold are divided into two groups. The first group of branch pipes includes four short branch pipes, which are connected to the connection interface located at the lower part of the ceramic kiln 302. The second group of branch pipes includes five long branch pipes, which are connected to the connection interface located at the upper part of the ceramic kiln 302. The short and long branch pipes are arranged alternately in the longitudinal direction, thereby ensuring that the ceramic kiln 302 is heated as evenly as possible. It should be noted that the number of branch pipes in each manifold, the structural form of the branch pipes, and the layout of the ceramic kiln connection interface can be changed, and are not limited to the specific form shown in the figure. The basic principle is to ensure uniform heating inside the ceramic kiln 302.

[0074] Please see Figure 10A and Figure 10B ,in Figure 10A yes Figure 9 A partial enlarged view of the portion indicated by reference numeral I in the attached figure, while Figure 10B It is along Figure 10A The sectional view taken by the BB line in the middle. Figure 10A and Figure 10B An exemplary structure of a branch pipe is illustrated. Please refer to [link / reference]. Figure 10B The diagram illustrates the structure of the horizontal pipe section constituting the long branch pipe. This horizontal pipe section includes construction materials such as refractory bricks 330 with holes 331. The refractory bricks are arranged adjacent to each other along the length of the pipe to form the corresponding pipe sections. Insulation material 332 is provided around the outer perimeter of each pipe section, and a support structure 333 is provided at the bottom. The structure of the vertical pipe section of the long branch pipe is similar to that of the horizontal pipe section, but it does not require a support structure. Therefore, the entire outer perimeter of the vertical pipe section is insulated. The transition between the horizontal and vertical pipe sections is connected using refractory bricks with 90-degree arc-shaped holes as elbows. The exhaust pipe 322 is constructed in a similar manner, and it is connected to the vertical pipe section of the long branch pipe and the short branch pipe using refractory bricks with T-shaped holes as joints. The above are just examples illustrating the construction structure and interconnection methods of the air outlet duct 322 and the long and short branch pipes. There are many different specific solutions, and they are technical contents within the knowledge scope of those skilled in the art. Therefore, this utility model technical solution does not intend to limit its specific structure.

[0075] Please continue reading Figure 9 and Figure 10A A valve 366 is installed on the horizontal section of the long branch pipe. In the illustrated embodiment, the valve is in the form of a gate valve. For this purpose, a rectangular groove 351 is formed on the horizontal pipe section, and the gate 350 of the gate valve is fitted into the rectangular groove and can move back and forth. To facilitate the movement of the gate, a handle 352 is provided on the gate. By setting the open and closed state of the valve 366, the ceramic kiln 302 can be connected or disconnected from the heat storage tanks 311 and 312. Similarly, as... Figure 9 As shown, a valve 345 can also be installed on the short branch pipe 326.

[0076] See also Figure 9 The heat storage tank 311 is equipped with an air inlet 620. The ceramic kiln includes a second connecting pipe, which includes an air intake port and an air outlet port. The second connecting pipe includes an air inlet pipe 327, one end of which is connected to the air inlet of the heat storage tank 311 and forms the air outlet port of the second connecting pipe. This air inlet is connected to the air outlet of the heat storage tank 311 through the inner cavity of the heat storage tank 311. A circulating fan 331 is provided at the other end of the air inlet pipe 327. The circulating fan 331 is used to realize the flow of air from the air intake port of the second connecting pipe through the air inlet pipe 327, the heat storage tank 311 and the first connecting pipe to the connection interface provided on the ceramic kiln.

[0077] As a preferred technical solution, a filter screen can be installed at the inlet end of the air inlet duct 327 or the air inlet of the circulating fan 31 to filter out dust and other impurities contained in the air.

[0078] See also Figure 9The ceramic kiln 302 is equipped with a cold air fan 335 and a cold air connecting pipe. The cold air connecting pipe includes a cold air inlet port and a cold air outlet port. The cold air outlet port is connected to a cold air connection interface on the ceramic kiln that leads to the interior of the ceramic kiln. The cold air fan is located at the cold air inlet port of the cold air connecting pipe to enable the flow of cold air from the cold air inlet port through the cold air connecting pipe to the cold air connection interface on the ceramic kiln, thereby supplying cold air into the kiln.

[0079] The air cooler 335 can share a connecting pipe with the heat storage unit, or it can be connected to the interior of the ceramic kiln 302 through a separate air cooling connecting pipe. Figure 9 The diagram illustrates an example using a separate cold air connection duct. For example... Figure 9 As shown, the air cooler 335 is installed at the air inlet end of the air inlet duct 336, which constitutes the air inlet port of the air cooling connection pipeline. A filter screen can be installed at the air inlet end of the air inlet duct or the air inlet of the air cooler 335. The air outlet end of the air inlet duct 336 is connected to two manifolds 357 and 358 arranged on both sides of the heat storage tank. A valve 360 ​​is installed on the air inlet duct to control the disconnection and connection between the air outlet end of the air inlet duct and the air cooler. The air cooling connection pipeline also includes multiple branch pipes 361 connected to the manifolds 357 and 358. One end of each branch pipe is connected to the manifold, and the other end is connected to multiple connection interfaces provided on the ceramic kiln 302. The other end of the branch pipe constitutes the air outlet port of the air cooling connection pipeline.

[0080] During operation, by opening valve 328, or, if valves 345 and 366 are set, opening valves 328, 345, and 366 respectively, the air outlets of the two heat storage tanks are connected to the ceramic kiln. Then, the circulating fans 331 of each of the two heat storage tanks are started, causing airflow to enter the heat storage tank from the air inlet pipe 327 through the heat storage tank air inlet. After the air entering the heat storage tank from the air inlet exchanges heat with the heat storage medium, it is discharged from the air outlets of heat storage tanks 311 and 312, and enters the kiln 302 through the air outlet pipe 322 and various branch pipes 326 to heat the kiln. The kiln is maintained in a slightly positive pressure environment. An exhaust duct is set at the bottom of the kiln, and the hot air inside the kiln is discharged through the exhaust duct (flue).

[0081] As described in the first embodiment, during the heating stage, the circulating fan 331 operates to introduce hot air into the kiln, gradually raising the temperature inside the kiln to the required temperature, such as 1230-1250 degrees Celsius. During the heat preservation stage, the temperature inside the kiln can be maintained at a predetermined temperature value by reducing the air intake. During the cooling stage, the circulating fan 331 stops working, and cold air is supplied to the kiln by opening the valve 360 ​​and activating the cold air fan 335.

[0082] Similar to the first embodiment, the kiln temperature is controlled to meet a specific temperature curve using an automatic circuit controller and temperature sensors installed inside the kiln. During the heating and holding stages, if the kiln temperature deviates from the expected temperature, the automatic circuit controller adjusts the speed of the two circulating fans 331 to regulate the air intake, ensuring the kiln temperature meets the requirements. During the heating and holding stages, hot air is supplied to the kiln using the circulating fans. At the end of the holding stage, the circulating fans stop operating, thus stopping the supply of hot air to the kiln. The air outlets of the two heat storage tanks 311 and 312 are disconnected from the kiln 302 by adjusting the opening and closing status of valve 328. During the cooling stage, if the kiln temperature deviates from the expected temperature, the automatic circuit controller adjusts the speed of the cooling fan to regulate the air intake, ensuring the kiln temperature basically meets the requirements.

[0083] As a preferred technical solution, similar to the first embodiment, a second electric heater 365, such as a silicon carbide rod, can be installed inside the kiln as an auxiliary heat source. The second electric heater is installed in the ceramic kiln to heat it. The second electric heater can be powered by mains electricity or by a solar panel. The operation of the kiln system using the second electric heater as an auxiliary heat source is the same as described in the first embodiment; its description is omitted for brevity. This utility model can be used to modify traditional kiln systems that use electric heaters for heating. In this case, the second electric heater is the same as the electric heater installed in the traditional kiln system.

[0084] The following is combined with Figure 11 The present invention describes a kiln system using a heat storage device for heating according to a fourth embodiment of the present invention. The kiln system 400 of the fourth embodiment using a heat storage device for heating is a kiln system for manufacturing ceramics, including a solar power generation device 5, a heat storage device 401, and a roller kiln 402.

[0085] exist Figure 11 In the illustrated embodiment, the heat storage device 401 includes multiple heat storage units, namely heat storage units 411 and 412 arranged side by side on both sides of the roller kiln 402 and sequentially along the longitudinal direction of the roller kiln. Each heat storage unit may adopt the same structure. The roller kiln 402 is a common ceramic kiln in the art, and its structure is well known to those skilled in the art. The technical solution of the fourth embodiment of this utility model is only reflected in its use of a heat storage device as a heat source to heat the kiln. Therefore, for the sake of simplicity, this application omits the description of the specific structure of the roller kiln.

[0086] As is well known to those skilled in the art, a roller kiln includes several preheating sections, firing sections, and cooling sections; as an example, the figure schematically shows a roller kiln including two preheating sections 405 and 406, a firing section 407, and a cooling section 409, with each of the two preheating and firing sections equipped with two heat storage tanks located on the left and right sides of the figure. Figure 11 As shown, each heat storage tank is equipped with a circulating fan 431 at its air inlet, and the air outlet of each heat storage tank is connected to the connection interface leading to the interior of the roller kiln on the corresponding kiln section via a first connecting pipe 403. A valve 416 is installed on the first connecting pipe 403. In addition, the roller kiln is also equipped with a cold air fan 45 and a cold air connecting pipe 46.

[0087] To control the temperature of each kiln section, including the preheating, firing, and cooling sections, the kiln system includes an automatic circuit controller and multiple temperature sensors. These sensors are installed in each kiln section to detect the temperature within that section. The automatic circuit controller is connected to these temperature sensors to receive the temperature signals detected by each sensor within its respective kiln section. If the temperature in the preheating or firing section deviates from the expected temperature, the automatic circuit controller adjusts the speed of the circulating fan in the corresponding heat storage tank to regulate the air intake, ensuring the temperature in that kiln section meets the requirements. Similarly, if the temperature in the cooling section of the roller kiln deviates from the expected temperature, the automatic circuit controller adjusts the speed of the cooling fan to regulate the air intake, ensuring the temperature in that section meets the requirements.

[0088] During operation, valve 416 is opened to connect the air outlets of the heat storage tanks to the corresponding kiln sections (i.e., preheating or firing sections). Then, the circulating fans 431 of each heat storage tank are started, causing airflow to enter the heat storage tank from the air inlet. After heat exchange with the heat storage medium, the air is discharged from the air outlet and enters the corresponding kiln section via the first connecting pipe 403 to heat the kiln section to the desired temperature and maintain it at that temperature. Simultaneously, temperature sensors installed in each kiln section detect the temperature within that section, and an automatic circuit controller maintains the temperature within the kiln section at the desired temperature. In the cooling section, a cooling fan is activated for temperature regulation, and temperature control is achieved through temperature sensors and the automatic circuit controller.

[0089] The present invention has been described above with reference to the accompanying drawings and specific embodiments, but this is merely for illustrative purposes, and the present invention is not limited thereto. Therefore, it will be apparent to those skilled in the art that various changes and modifications can be made within the technical spirit and scope of the present invention, and these changes and modifications should also be understood to fall within the scope of the present invention, which is defined by the claimed technical solutions and their equivalents.

Claims

1. A kiln system using a heat storage device for heating, characterized in that, include: Solar panels; A thermal storage device, the thermal storage device including a thermal storage unit, the thermal storage unit including an air inlet and an air outlet; The heat storage device contains a heat storage medium and is equipped with a first electric heater inside. The first electric heater uses the electrical energy generated by the solar panel to heat the heat storage device. The air inlet is connected to the air outlet via the heat storage chamber. The air entering the heat storage from the air inlet exchanges heat with the heat storage medium and is then discharged from the air outlet. A ceramic kiln, wherein the ceramic kiln utilizes the thermal energy stored in the heat storage device for heating; The first connecting pipe includes an air inlet port and an air outlet port. The air inlet port is connected to the air outlet of the heat storage device, and the air outlet port is connected to the connecting interface provided on the ceramic kiln leading to the interior of the ceramic kiln. A circulating fan is used to realize the flow of air from the air inlet through the heat storage tank and the first connecting pipe to the connection interface provided on the ceramic kiln; The circulating fan is located at the air inlet, or the circulating fan is connected to the air inlet through a second connecting pipe. The second connecting pipe includes an air intake port and an air outlet port. The air outlet port is connected to the air inlet, and the circulating fan is located at the air intake port of the second connecting pipe. The system includes a cold air blower and a cold air connecting pipe. The cold air connecting pipe includes a cold air inlet port and a cold air outlet port. The cold air outlet port is connected to a cold air connection interface on the ceramic kiln that leads to the interior of the ceramic kiln. The cold air blower is located at the cold air inlet port of the cold air connecting pipe to allow cold air to flow from the cold air inlet port through the cold air connecting pipe to the cold air connection interface on the ceramic kiln.

2. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The kiln system also includes a second electric heater, which is connected to the solar panel or to a household power source. The second electric heater is installed in the ceramic kiln and serves as an auxiliary heat source to heat the ceramic kiln.

3. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The first connecting pipeline includes a manifold and multiple branch pipes. One end of the multiple branch pipes is connected to the manifold, and the other end of the multiple branch pipes is connected to multiple connection interfaces provided on the ceramic kiln.

4. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The cold air connection pipeline includes a manifold and multiple branch pipes. One end of the multiple branch pipes is connected to the manifold, and the other end of the multiple branch pipes is connected to multiple cold air connection interfaces provided on the ceramic kiln.

5. The kiln system using a heat storage device for heating as described in claim 3, characterized in that, The connection interface and the cold air connection interface are the same interface, and the cold air connection pipeline includes the manifold and the multiple branch pipes.

6. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The heat storage device includes two heat storage units arranged side by side, two sets of first connecting pipes and two fans. The two heat storage units are respectively arranged on both sides of the ceramic kiln and connected to the connection interface on the same side of the ceramic kiln leading to the interior of the ceramic kiln through their respective first connecting pipes. Each circulating fan is installed at the air inlet of the corresponding thermal storage unit, or each circulating fan is connected to the air inlet of the corresponding thermal storage unit through its own second connecting pipe.

7. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The ceramic kiln is either a drawer kiln or a tunnel kiln.

8. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The ceramic kiln is a roller kiln, and the heat storage device includes multiple heat storage units arranged longitudinally along the roller kiln. Each preheating section and firing section of the roller kiln is equipped with its own heat storage unit. Each heat storage unit is equipped with a circulating fan and is connected to the connection interface leading to the interior of the roller kiln on the corresponding kiln section through a first connecting pipe.

9. The kiln system using a heat storage device for heating as described in claim 8, characterized in that, The kiln system also includes multiple temperature sensors and an automatic circuit controller. The temperature sensors are respectively installed in each kiln section to detect the temperature within that section. The automatic circuit controller is connected to the multiple temperature sensors to receive the temperature signals detected by the sensors in each kiln section. If the temperature in the preheating or firing section deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the circulating fan in the corresponding heat storage unit to adjust the air intake, so that the temperature in the kiln section meets the temperature requirements. If the temperature in the roller kiln cooling section deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the cooling fan to adjust the air intake, so that the temperature in the kiln section meets the temperature requirements.

10. The kiln system using a heat storage device for heating as described in claim 1, characterized in that, The kiln system also includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed inside the ceramic kiln to detect the temperature inside the kiln. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. During the heating and holding stages, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the speed of the circulating fan to adjust the air intake to make the temperature inside the kiln meet the requirements. During the cooling stage, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the speed of the cooling fan to adjust the air intake to make the temperature inside the kiln meet the requirements.

11. The kiln system using a heat storage device for heating as described in claim 2, characterized in that, The kiln system also includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed inside the ceramic kiln to detect the temperature inside the kiln, and the automatic circuit controller is connected to the temperature sensor to receive the temperature signal inside the kiln detected by the temperature sensor. During the heating and heat preservation stages, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the circulating fan to adjust the air intake and / or controls the operation of the second electric heater to ensure that the temperature inside the kiln meets the temperature requirements. During the cooling stage, if the temperature inside the kiln deviates from the expected temperature, the automatic circuit controller controls the rotation speed of the cooling fan to adjust the air intake to ensure that the temperature inside the kiln meets the temperature requirements.

12. A kiln system using a heat storage device for heating, characterized in that, include: Solar panels; A thermal storage device, comprising a first thermal storage unit, the first thermal storage unit including an air inlet and an air outlet; The first thermal storage device contains a thermal storage medium and is equipped with an electric heater inside. The electric heater uses the electrical energy generated by the solar panel to heat the first thermal storage device. The air inlet is connected to the air outlet via the first heat storage chamber. The air entering the first heat storage chamber from the air inlet exchanges heat with the heat storage medium and is then discharged from the air outlet. A cement kiln, wherein the cement kiln utilizes the heat energy stored in the heat storage device for heating; The first connecting pipe includes a first air inlet port and an air outlet port. The first air inlet port is connected to the air outlet of the first heat storage unit, and the air outlet port is located at the longitudinal end of the cement kiln. A circulating fan is provided to facilitate airflow from the air inlet through a first heat storage tank and a first connecting pipe to the air outlet. The circulating fan is located at the air inlet, or the circulating fan is connected to the air inlet via a second connecting pipe, the second connecting pipe including an induced draft air inlet port and a first induced draft air outlet port, the first induced draft air outlet port being connected to the air inlet port, and the circulating fan being located at the induced draft air inlet port.

13. The kiln system using a heat storage device for heating as described in claim 12, characterized in that, The first connecting pipe includes a first air outlet pipe and an air guide pipe; one end of the first air outlet pipe forms the first air inlet port of the first connecting pipe; the other end of the first air outlet pipe is connected to one end of the air guide pipe, and the other end of the air guide pipe forms the air outlet port of the first connecting pipe.

14. The kiln system using a heat storage device for heating as described in claim 13, characterized in that, The first air outlet duct and the air guide duct are an integral pipe fitting.

15. The kiln system using a heat storage device for heating as described in claim 12, characterized in that, The circulating fan is connected to the air inlet through a second connecting pipe. The second connecting pipe includes a first air inlet pipe and an exhaust pipe. One end of the first air inlet pipe forms the first exhaust outlet port of the second connecting pipe. The other end of the first air inlet pipe is connected to one end of the exhaust pipe, and the other end of the exhaust pipe forms the exhaust inlet port of the second connecting pipe.

16. The kiln system using a heat storage device for heating as described in claim 15, characterized in that, The first air inlet pipe and the exhaust pipe are an integral pipe fitting.

17. The kiln system using a heat storage device for heating as described in claim 12, characterized in that, The kiln system that uses a heat storage device for heating also includes a pulverized coal supply device that delivers pulverized coal to the longitudinal end of the cement kiln via a coal feeding pipe.

18. The kiln system using a heat storage device for heating as described in claim 12, characterized in that, The kiln system using a heat storage device for heating also includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed at a certain location along the longitudinal direction of the kiln to detect the temperature inside the kiln at that location. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. If the detected temperature inside the kiln deviates from the required temperature, the automatic circuit controller controls the speed of the circulating fan to adjust the air intake so that the temperature inside the kiln meets the temperature requirements.

19. The kiln system using a heat storage device for heating as described in claim 17, characterized in that, The kiln system using a heat storage device for heating also includes a temperature sensor and an automatic circuit controller. The temperature sensor is installed at a certain location along the longitudinal direction of the kiln to detect the temperature inside the kiln at that location. The automatic circuit controller is connected to the temperature sensor to receive the temperature signal detected by the temperature sensor inside the kiln. If the detected temperature inside the kiln deviates from the required temperature, the automatic circuit controller controls the rotation speed of the circulating fan to adjust the air intake and / or control the coal powder supply to ensure that the temperature inside the kiln meets the requirements.

20. The kiln system using a heat storage device for heating as described in claim 12, characterized in that, The circulating fan is connected to the air inlet via a second connecting pipe. The kiln system using a heat storage device for heating also includes a second heat storage device, which serves as a backup heat storage device. The first connecting pipe also includes a second air inlet port, which is connected to the air outlet of the second heat storage device. The second connecting pipe also includes a second induced draft air outlet port, which is connected to the air inlet of the second heat storage device. Valves are installed on the first and second connecting pipes, and the first or second heat storage device is selected by setting the opening and closing state of the valves.

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