Solar water heater high-temperature idle sunning prevention device and control method thereof

Abstract

The invention discloses a high-temperature idle sunning prevention device of a solar water heater and a control method of the high-temperature idle sunning prevention device. The high-temperature idle sunning prevention device comprises an inner container and an air supply mechanism. The inner container is provided with an air inlet which is communicated with the air supply mechanism and used for supplying air into the inner container; the air supply path of the air supply mechanism in the inner container is limited to extend in the length direction of the inner container. According to the high-temperature idle sunning prevention device of the solar water heater, the air supply mechanism is installed on the solar water heater, starting and stopping of the air supply mechanism are controlled according to the obtained air temperature in the inner container, the idle sunning temperature of the solar water heater can be effectively reduced, and therefore the service life of the whole machine is prolonged, and the risk that people are hurt by high temperature is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of water heaters, in particular, relates to a high-temperature air exposure prevention device for a solar water heater and a control method thereof. BACKGROUND

[0002] A solar water heater converts solar energy into heat energy, heats water from low temperature to high temperature to meet the hot water use in people's life and production. The solar water heater is composed of a heat collecting pipe, a water storage tank and related accessories, and the conversion of solar energy into heat energy mainly relies on the heat collecting pipe. The temperature of the sunlight irradiation surface of the heat collector is high, the temperature of the non-irradiation surface of the heat collecting pipe is low, and the water in the pipe generates a temperature difference reaction. The water produces microcirculation by using the principle that hot water floats and cold water sinks to achieve the required hot water.

[0003] The existing open type solar water heater is easy to cause no water in the water tank under the condition of water replenishment valve failure or vacuum tube damage, so that the whole solar water heater is in an air exposure state. The air exposure not only seriously affects the service life of the solar water heater, especially has great damage to the performance of the rubber sealing element, but also has potential safety hazards of scalding users when the air exposure temperature of the water tank of the solar water heater exceeds 150℃.

[0004] A solar water heater capable of preventing temperature from being too high is disclosed in Chinese patent No. 201922153050.4. The water heater comprises a water storage tank, a vacuum heat collecting pipe and a protective air cushion. The vacuum heat collecting pipe comprises a sleeve pipe, a heat collecting pipe and a liquid outlet pipe. The lower part of the sleeve pipe is connected with a mounting frame, and the mounting frame is provided with a control device. The sleeve pipe is provided with the heat collecting pipe, and the lower part of the heat collecting pipe is provided with the liquid storage pipe. The upper end of the liquid storage pipe is connected with a three-way pipe, the left side of the three-way pipe is connected with an air filling column, and the protective air cushion comprises a protective cloth surface, an elastic rod and an air filling column. The upper end surface of the protective cloth surface is provided with the elastic rod, and the lower end surface of the protective cloth surface is provided with the air filling column. The lower end of the three-way pipe is connected with a ventilation pipe. The device in this application is complex in technology and high in cost, and has limited adaptability to the environment.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a high-temperature air exposure prevention device for a solar water heater and a control method thereof. An air supply mechanism is installed on the solar water heater to supply air to the inner container to reduce the temperature when the inner container of the solar water heater is in air exposure.

[0007] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is:

[0008] In a first aspect of the present application, a high-temperature air exposure prevention device for a solar water heater is provided, comprising: an inner container and an air supply mechanism.

[0009] The inner container is provided with an air inlet, which is communicated with the air supply mechanism, and is used for supplying air into the inner container.

[0010] Further, the air supply path of the air supply mechanism in the inner container is defined as extending along the length direction of the inner container.

[0011] Advantageously, the air supply mechanism is installed on the solar water heater, and external air is supplied into the inner container through the air inlet of the inner container to adjust the air temperature in the inner container and prevent the water heater from being exposed to high temperature.

[0012] Further, the inner container is provided with an air outlet, which is used for guiding the air generated by the air supply mechanism out of the inner container.

[0013] Preferably, the air outlet is the same as the exhaust hole provided on the inner container.

[0014] Advantageously, the cooperation of the air supply mechanism and the air outlet realizes the circulation and temperature reduction of the air in the inner container, and the cooling effect is more significant.

[0015] Further, the air inlet and the air outlet are both arranged above the predetermined maximum water level of the inner container.

[0016] And / or, a one-way valve is arranged between the air supply mechanism and the air inlet.

[0017] Preferably, the one-way valve is installed in the air inlet.

[0018] Advantageously, the air inlet and the air outlet are arranged above the predetermined maximum water level of the inner container, which can ensure that the air supply mechanism does not directly contact with water when the water heater is filled with water, thereby avoiding the damage or failure of the equipment caused by water immersion.

[0019] Further, the high-temperature air exposure prevention device of the solar water heater further comprises a temperature monitoring unit, which is used for monitoring the air temperature in the inner container.

[0020] A control unit is electrically connected with the air supply mechanism and the temperature monitoring unit.

[0021] The control unit controls the start and stop of the air supply mechanism according to the air temperature monitored by the temperature monitoring unit.

[0022] Further, the temperature monitoring unit is arranged on the bottom wall of the inner container, and the monitoring end extends upwards above the predetermined maximum water level of the inner container.

[0023] Further, the high-temperature air exposure prevention device of the solar water heater further comprises an alarm unit, and the control unit controls the alarm unit to alarm according to the air temperature in the inner container monitored by the temperature monitoring unit / the air supply time of the air supply mechanism.

[0024] Further, the inner container is covered with a heat preservation layer outside, the heat preservation layer is internally provided with a containing cavity, and the air feeding mechanism is arranged in the containing cavity.

[0025] Preferably, the containing cavity is arranged close to the air inlet.

[0026] Further, the air feeding mechanism comprises an air inlet pipe.

[0027] A fan is connected with the air inlet pipe and used for feeding air into the inner container through the air inlet pipe.

[0028] In the second aspect, the application provides a control method of the high-temperature air exposure prevention device of the solar water heater, which applies the high-temperature air exposure prevention device of the solar water heater, and comprises the following steps.

[0029] Obtaining the air temperature in the inner container of the solar water heater.

[0030] When the air temperature in the inner container reaches a first preset temperature value, the air feeding mechanism is controlled to be started to feed air into the inner container.

[0031] When the air temperature in the inner container reaches a second preset temperature value, the air feeding mechanism is controlled to stop feeding air into the inner container.

[0032] The second preset temperature value is lower than the first preset temperature value.

[0033] Compared with the prior art, the application has the following beneficial effects.

[0034] 1. The air feeding mechanism is installed on the solar water heater, which effectively solves the problem of high air temperature in the inner container of the solar water heater during air exposure, prolongs the service life of the water heater, reduces the risk of high-temperature injury, has simple structure, convenient operation, energy saving and environmental protection, and has high use value and promotion prospect.

[0035] 2. The air outlet is arranged on the inner container of the solar water heater and is used in cooperation with the air feeding mechanism, which realizes the circulation and temperature reduction of the air in the inner container, and the cooling effect is more remarkable; the air outlet and the exhaust hole originally arranged on the inner container are the same, which can simplify the structure of the inner container, reduce the additional opening and sealing work, and also reduce the production cost.

[0036] 3. The high-temperature air exposure prevention device of the solar water heater combines the temperature monitoring unit, the control unit and the air feeding mechanism, realizes the intelligent control of the air temperature in the inner container through the cooperation of the temperature monitoring unit and the control unit, and improves the automation degree and reliability of the device.

[0037] 4. The high-temperature air prevention device for the solar water heater, by installing the air supply mechanism in the containing cavity in the heat preservation layer, the air supply mechanism can reduce the influence on the external environment, and the overall heat preservation effect of the water heater can be further improved.

[0038] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, the schematic embodiments of the present application and the descriptions thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0040] Figure 1 is a schematic diagram of the solar water heater as a whole of the present application;

[0041] Figure 2 is a schematic diagram of the solar water heater of the present application Figure 1 is a schematic diagram of the solar water heater of the present application Figure 1 ;

[0042] Figure 3 is a schematic diagram of the solar water heater of the present application Figure 1 is a schematic diagram of the solar water heater of the present application Figure 2 ;

[0043] Figure 4 is a schematic diagram of the control method flow of the present application.

[0044] In the drawings: 100, water heater shell; 110, heat preservation layer; 120, inner container; 121, air inlet; 122, air outlet; 130, air supply mechanism; 131, air inlet pipe; 132, fan; 133, one-way valve; 140, air outlet pipe; 150, temperature monitoring unit; 160, control unit; 161, control panel; 170, water inlet pipe; 180, water outlet pipe.

[0045] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be clearly and completely described below with reference to the drawings of the embodiments of the present application, the following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0047] In the description of the present application, it should be pointed out that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0048] In the description of the present application, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] As shown in Figures 1 to 3 The present application provides a high-temperature air-solar device for a solar water heater, comprising: a liner 120 and a blower mechanism 130;

[0050] The liner 120 is provided with an air inlet 121, which communicates with the blower mechanism 130, for blowing air into the liner 120.

[0051] Further, the air supply path of the blower mechanism 130 in the liner 120 is limited to extend along the length direction of the liner 120.

[0052] In this embodiment, the solar water heater is provided with a liner 120 to store water and absorb solar energy for heating; the liner 120 is provided with an air inlet 121, and the air inlet 121 is connected with the blower mechanism 130 to ensure effective delivery of the required air into the liner 120. The air supply path of the blower mechanism 130 in the liner 120 is limited to extend along the length direction of the liner 120, i.e. the air generated by the blower mechanism 130 flows along the axial direction of the liner 120 to the other end, which can effectively reduce the temperature in the liner 120 and prevent high temperature problems during air-solar. When the air inlet 121 is set, the size, position and shape of the air inlet 121 can be designed according to the specific needs and use scenarios of the liner 120.

[0053] Specifically, when the solar water heater is in the air-solar state, the blower mechanism 130 is started to send cold air into the liner 120 through the air inlet 121. The cold air flows in the axial direction of the liner 120, taking away the heat on the surface of the liner 120, thereby reducing the air temperature in the liner 120. In this way, even without water, the liner 120 of the solar water heater will not overheat due to direct sunlight, thereby avoiding various problems caused by high temperature.

[0054] Further, the inner container 120 is provided with an air outlet 122 for guiding the air generated by the air supply mechanism 130 out of the inner container 120.

[0055] Preferably, the air outlet 122 and the exhaust hole of the inner container 120 are the same.

[0056] In the present embodiment, in order to facilitate the circulation of air between the inner container 120 and the external environment, the air outlet 122 is provided on the side of the inner container 120 opposite to the air inlet 121, and is connected with an air outlet pipe 140 for the circulation of air between the inner container 120 and the external environment. The air outlet pipe 140 not only guides the flow of air, but also ensures that the air can be directly discharged to the external environment, avoiding the stagnation or circulation of air inside the inner container 120. In order to simplify the structure of the inner container 120 and reduce additional opening and sealing work, the air outlet 122 and the original exhaust hole of the inner container 120 are set as the same, and correspondingly, the air outlet pipe 140 and the original exhaust pipe are set as the same.

[0057] Specifically, when the solar water heater needs to be filled with water, the water supply device introduces water into the inner container 120 from the water inlet pipe 170, and in this process, the original air in the inner container 120 is smoothly discharged along the air outlet pipe 140, ensuring that the water can enter and fill the inner container 120 without obstruction. When the water in the inner container 120 of the solar water heater needs to be used, the water is discharged through the water outlet pipe 180, and at the same time, fresh air from the outside enters the inner container 120 through the air outlet pipe 140, supplementing the space left by the water discharge. The water inlet pipe 170 and the water outlet pipe 180 in the present embodiment are both arranged at the lower part of the end of the inner container 120, and are arranged at opposite ends, so as to ensure that water can be smoothly supplied to the inner container 120 and the water in the inner container 120 can be smoothly discharged, which not only improves the use efficiency of the solar water heater, but also brings users a more convenient and comfortable use experience.

[0058] When the solar water heater is exposed to the sun, in order to prevent the solar water heater from being exposed to high temperature, air can be supplied to the inner container 120 by the air supply mechanism 130 to reduce the temperature of the air in the inner container 120. Specifically, when the air supply mechanism 130 starts to operate, the air from the outside is sucked and transported into the inner container 120 through the air inlet pipe 131, and at the same time, due to the action of the air supply mechanism 130, the hot air in the inner container 120 is pushed out of the inner container 120 through the air outlet pipe 140, thereby achieving the exchange of air in the inner container 120 and achieving the effect of cooling the inner container 120.

[0059] Further, the air inlet 121 and the air outlet 122 are both arranged above the maximum water level of the inner container 120.

[0060] And / or, a one-way valve 133 is arranged between the air supply mechanism 130 and the air inlet 121.

[0061] Preferably, the one-way valve 133 is installed in the air inlet 121.

[0062] In this embodiment, the air inlet 121 and the air outlet 122 are arranged above the predetermined maximum water level of the inner container 120, which can ensure that the air supply mechanism 130 will not be in direct contact with water when the water heater is filled with water, thereby avoiding damage or failure of the equipment due to water immersion. The air supply mechanism 130 cooperates with the air inlet 121 and the air outlet 122 of the inner container 120 to form a complete air circulation system. When the air supply mechanism 130 is started, the air enters the inner container 120 from the air inlet 121, passes through the space inside the inner container 120, and is discharged from the air outlet 122, thereby taking away the heat in the inner container 120 and achieving the effect of cooling.

[0063] To ensure that the external air can smoothly enter the inner container 120, and to prevent the internal water from entering the fan 132 through the air inlet pipe 131 and affecting its operation, a one-way valve 133 is arranged between the air supply mechanism 130 and the air inlet 121, which can ensure that the air flows in one direction, from the air inlet 121 into the inner container 120, and the water in the inner container 120 cannot flow backward into the air inlet pipe 131, let alone into the fan 132 and affect the operation of the fan 132. The cooperation of the air inlet pipe 131, the fan 132 and the one-way valve 133 realizes the precise control of the air inlet 121. When the fan 132 is running, the one-way valve 133 automatically opens to allow external air to enter the inner container 120 through the air inlet pipe 131, realizing the replacement of air in the inner container 120 to reduce the air temperature in the inner container 120. When the fan 132 stops running or the pressure in the inner container 120 changes, the one-way valve 133 can quickly close to prevent air from flowing in the opposite direction or water in the inner container 120 from flowing backward into the air inlet pipe 131 and the fan 132. By arranging the one-way valve 133 between the air supply mechanism 130 and the air inlet 121, precise control of the air inlet 121 is realized, which ensures that air can enter the inner container 120 as needed and effectively prevents the risk of air flowing in the opposite direction or water flowing backward, thereby improving the air supply efficiency, stability and safety of the equipment. As a preferred solution, the one-way valve 133 can be installed in the air inlet 121.

[0064] It should be noted that the predetermined maximum water level in the inner container 120 can be set by a liquid level monitoring device arranged inside the inner container 120. When the water level reaches the predetermined maximum water level, the sensor will send a signal to control the water inlet of the inner container 120, so as to ensure that the water amount in the inner container 120 does not exceed the set maximum limit. The maximum water level can also be determined by the position of the overflow hole arranged on the inner container 120. The overflow hole is a safety device. When the water level in the inner container 120 rises to the position of the overflow hole, the excess water will flow out through the hole, thereby preventing the water in the inner container 120 from being too much.

[0065] In another embodiment, the inner container 120 can be cooled in another way by changing the settings of the fan 132 and the one-way valve 133. Specifically, when the fan 132 is started, instead of blowing external air into the inner container 120, it extracts hot air in the inner container 120. At this time, external air enters the inner container 120 through the air outlet pipe 140, realizes the exchange of air in the inner container 120, and thus achieves the purpose of cooling the inner container 120.

[0066] Further, the solar water heater high-temperature air exposure prevention device is further provided with a temperature monitoring unit 150 for monitoring the air temperature in the inner container 120.

[0067] A control unit 160 is electrically connected to the air supply mechanism 130 and the temperature monitoring unit 150.

[0068] The control unit 160 controls the start and stop of the air supply mechanism 130 according to the temperature value monitored by the temperature monitoring unit 150.

[0069] Further, the temperature monitoring unit 150 is arranged on the bottom wall of the inner container 120, and the monitoring end extends upward above the predetermined maximum water level of the inner container 120.

[0070] In this embodiment, the solar water heater high-temperature air exposure prevention device is further provided with a temperature monitoring unit 150 and a control unit 160. The temperature monitoring unit 150 is responsible for real-time monitoring of the air temperature in the inner container 120. The control unit 160 controls the start and stop of the air supply mechanism 130 according to the monitoring result of the temperature monitoring unit 150.

[0071] Specifically, the temperature monitoring unit 150 is arranged on the bottom wall of the inner container 120, and the monitoring end extends upwards above the predetermined maximum water level of the inner container 120, so as to ensure that the temperature monitoring unit 150 can accurately monitor the air temperature in the inner container 120 at any time, whether in a full water state or an empty state. The control unit 160 is electrically connected with the air supply mechanism 130 and the temperature monitoring unit 150, and is responsible for receiving the temperature data transmitted by the temperature monitoring unit 150 and controlling the start and stop of the air supply mechanism 130 according to the data. When the temperature monitoring unit 150 monitors that the air temperature in the inner container 120 exceeds the preset safety threshold, the control unit 160 starts the air supply mechanism 130 to send cold air into the inner container 120 to reduce the air temperature in the inner container 120. When the temperature decreases to the safety range, the control unit 160 stops the air supply mechanism 130, so as to achieve the effect of energy saving and environmental protection.

[0072] Further, the solar water heater high-temperature emptying prevention device is further provided with an alarm unit, and the control unit 160 controls the alarm unit to alarm according to the air temperature of the inner container 120 monitored by the temperature monitoring unit 150 / the air supply time of the air supply mechanism 130.

[0073] In the embodiment, the solar water heater high-temperature emptying prevention device is further provided with an alarm unit, and the alarm unit is arranged on the control panel 161 in the room, so that the user can intuitively receive the prompt of the state of the solar water heater. When the temperature monitoring unit 150 monitors that the air temperature in the inner container 120 exceeds the preset safety threshold, the control unit 160 determines that it is an abnormal state and triggers the alarm unit to alarm. This safety threshold can be set according to the actual situation to ensure that the water heater operates in a safe range. If the air supply time of the air supply mechanism 130 exceeds the preset time threshold and the temperature in the inner container 120 has not decreased to the safety range, the control unit 160 also determines that it is an abnormal state and triggers the alarm unit to alarm. This may be because the air supply mechanism 130 is malfunctioning or there is another problem in the inner container 120, which needs to be checked and handled by the user or the maintenance personnel.

[0074] It should be noted that, in order to increase the convenience of the user, the alarm unit can not only be stopped by the control of the control unit 160, but also can be directly turned off by the user through the control panel 161. Such a design enables the user to choose whether to turn off the alarm unit according to his own needs, thereby improving the user experience.

[0075] Further, the inner container 120 is covered with a heat preservation layer 110, and the heat preservation layer 110 is internally provided with a containing cavity, and the air supply mechanism 130 is arranged in the containing cavity.

[0076] Preferably, the containing cavity is arranged close to the air inlet 121.

[0077] In the present embodiment, the high-temperature air-proofing device for solar water heater, wherein the solar water heater comprises an inner container 120, the inner space of which is specially used for storing water, in order to maintain the stability of water temperature, the outer part of the inner container 120 is covered with a heat insulation layer 110, which aims to ensure that the water in the inner container 120 can be continuously kept warm. In addition, the whole structure of the solar water heater tightly wraps the inner container 120 and the heat insulation layer 110 by the water heater shell 100, forming a complete solar water heater unit. In order to ensure the smooth in and out of water in the solar water heater, the water inlet pipe 170 and the water outlet pipe 180 are arranged, so that the water in the inner container 120 can be smoothly discharged, and at the same time, the external water source can be smoothly introduced, thereby ensuring the efficient operation of the solar water heater.

[0078] In the present embodiment, the air inlet 121 is arranged at the end of the inner container 120 of the solar water heater, which can ensure that the external air can smoothly enter the inner container 120, and is conducive to the uniform distribution of air in the inner container 120. An accommodation cavity is arranged inside the heat insulation layer 110 at the air inlet 121, and the air supply mechanism 130 is arranged in the accommodation cavity, which can reduce the potential influence of the external environment on the air supply mechanism 130, and improve its working efficiency and stability. Based on the principle of hot air rising and cold air sinking, the air inlet 121 is preferably arranged in the upper middle area of the end of the inner container 120, which can be conducive to the entry of cold air, and further promote the convection of air and the uniform distribution of temperature in the inner container 120; not only improves the performance of the solar water heater, but also ensures the comfortable experience of the user in the use process.

[0079] Specifically, in order to optimize the performance of the air supply mechanism 130 and ensure the cleanliness of the air in the inner container 120, the water heater shell 100 is arranged as a shell with filter holes at the position where the air supply mechanism 130 is installed, which can not only ensure that the external air can smoothly enter the inner container 120 through the air supply mechanism 130, but also can effectively filter the air entering the inner container 120, removing impurities and particles in the air. The water heater shell 100 with filtering function is arranged outside the air supply mechanism 130, which not only can ensure the cleanliness of the air in the inner container 120 and prolong the service life of the solar water heater, but also can ensure that the user enjoys more pure and comfortable water quality when using hot water. Not only ensures the working efficiency of the air supply mechanism 130, so that it can efficiently provide the fresh air required by the inner container 120, but also can promote the convection of air and the uniform distribution of temperature in the inner container 120.

[0080] In the present embodiment, the air supply mechanism 130 is placed inside the heat insulation layer 110, which not only effectively avoids the direct exposure of the air supply mechanism 130 to the external environment, reduces the potential influence of the external environment on the air supply mechanism 130, but also improves the working efficiency and stability of the air supply mechanism 130.

[0081] Further, the air feeding mechanism 130 comprises an air inlet pipe 131;

[0082] The air fan 132 is connected with the air inlet pipe 131, and is used to deliver air into the inner container 120 through the air inlet pipe 131.

[0083] In the embodiment, the air feeding mechanism 130 ensures that the external air can effectively enter the inner container 120, and provides strong support for air circulation and temperature adjustment of the inner container 120. The air feeding mechanism 130 comprises the air inlet pipe 131 and the air fan 132. One end of the air inlet pipe 131 is tightly connected with the air inlet 121 arranged on the inner container 120, so as to ensure smooth air flow. The other end is communicated with the air fan 132, so as to form a complete air delivery channel. The air fan 132 as the core component of the air feeding mechanism 130 can suck the external air and deliver it into the inner container 120 through the air inlet pipe 131.

[0084] Specifically, one end of the air inlet pipe 131 is tightly connected with the air inlet 121 arranged on the inner container 120, so as to ensure that the air can smoothly enter the inner container 120 from the air inlet pipe 131. The other end of the air inlet pipe 131 extends into the heat preservation layer 110 and is connected with the air fan 132. The air fan 132 as the core component of the air feeding mechanism 130 can suck the external air and deliver it into the inner container 120 through the air inlet pipe 131. The air fan 132 is arranged in the heat preservation layer 110, so as to avoid direct exposure of the air fan 132 to the external environment, reduce the influence of the external environment on the air fan 132, and improve the working efficiency and stability of the air fan 132.

[0085] As shown in FIG. 1, Figure 4 The second aspect of the present application provides a control method applied to the high-temperature air prevention device of the solar water heater, which comprises the following steps:

[0086] acquiring the air temperature in the inner container of the solar water heater;

[0087] judging whether the air temperature in the inner container reaches a first preset temperature value, and controlling the air feeding mechanism to start and feed air into the inner container;

[0088] judging whether the air temperature in the inner container reaches a second preset temperature value, and controlling the air feeding mechanism to stop feeding air into the inner container;

[0089] The second preset temperature value is lower than the first preset temperature value.

[0090] Specifically, the temperature monitoring unit 150 and the control unit 160 work together to achieve automatic regulation of the air temperature in the inner container 120. The temperature monitoring unit 150 is installed at the bottom of the solar water heater inner container 120 to detect the air temperature in the inner container 120; when the temperature monitoring unit 150 monitors that the air temperature in the inner container 120 reaches the first preset temperature value, the monitored temperature parameter is transmitted to the control unit 160, the control unit 160 receives the monitoring result transmitted by the temperature monitoring unit 150, and the fan 132 is started to send air to the inner container 120. The start of the fan 132 will accelerate the circulation of the inner container 120 and the external air, helping to reduce the air temperature in the inner container 120, thereby preventing the water heater from being damaged due to high temperature. With the continuous work of the fan 132, the air temperature in the inner container 120 will gradually decrease; when the temperature monitoring unit 150 monitors that the air temperature in the inner container 120 reaches the second preset temperature value, the monitoring result is transmitted to the control unit 160, the control unit 160 receives the monitoring result of the temperature monitoring unit 150, judges that the air temperature in the inner container 120 is in the safe range, and then controls the fan 132 to stop working, ending the air supply to the inner container 120; both can realize the air temperature regulation of the solar water heater inner container 120 when it is empty, and avoid unnecessary energy waste.

[0091] It should be noted that the first preset temperature value is the maximum temperature value set by the solar water heater when it is exposed to the sun, and when the air temperature in the inner container 120 exceeds the maximum temperature value, it indicates that the solar water heater is facing the risk of high-temperature exposure to the sun and needs to take immediate measures to cool down. At this time, the temperature monitoring unit 150 will transmit the monitored air temperature to the control unit 160, and the control unit 160 will control the fan 132 to start blowing air into the inner container 120 to accelerate the circulation of air inside and outside the inner container 120 and reduce the air temperature in the inner container 120. With the continuous operation of the fan 132, the air temperature in the inner container 120 will gradually decrease; at the same time, the control unit 160 controls the alarm unit to alarm to remind the user that the water heater is currently in a high-temperature exposure state and needs to be paid attention to and repaired in time. When the temperature monitoring unit 150 monitors that the air temperature in the inner container 120 has dropped to the second preset temperature value, it will again transmit this monitoring result to the control unit 160. It should be noted that the second preset temperature value is a safety temperature value, which is lower than the first preset temperature value, indicating that the air temperature in the inner container 120 has returned to a safe range. At this time, the control unit 160 will determine that the air temperature in the inner container 120 is safe, and therefore will control the fan 132 to stop working and end the blowing of air into the inner container 120; at the same time, the control unit 160 will also control the alarm unit to stop alarming, indicating that the water heater is currently in a normal state. Through the intelligent temperature control design, the solar water heater can automatically cool down when it is exposed to high temperature, ensuring that the air temperature in the inner container 120 of the water heater is always within a safe range. This not only improves the safety and service life of the water heater, but also provides users with a more convenient and comfortable use experience.

[0092] The solar water heater high-temperature exposure prevention device of the present application installs an air blowing mechanism 130 on the solar water heater, blows air into the inner container 120 through the air blowing mechanism 130 to reduce the air temperature in the inner container 120 when it is exposed to the sun, avoids the damage of the solar water heater caused by the high internal air temperature when the inner container 120 is exposed to the sun, thereby prolonging the service life of the entire machine and reducing the risk of high-temperature injury.

[0093] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the present application. The embodiments in the above examples can be further combined or replaced, but as long as it does not deviate from the content of the technical solution of the present application, any simple modification, equivalent change and modification of the above examples according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A device for preventing high-temperature dry exposure in a solar water heater, comprising: Inner liner (120); Its features are, Also includes: air supply mechanism (130); The inner liner (120) is provided with an air inlet (121) which is connected to the air supply mechanism (130) for supplying air into the inner liner (120).

2. The solar water heater anti-high temperature dry-sun protection device according to claim 1, characterized in that, The air supply path of the air supply mechanism (130) in the inner liner (120) is defined as extending along the length direction of the inner liner (120).

3. The solar water heater anti-high temperature dry-sun protection device according to claim 1 or 2, characterized in that, The inner liner (120) is provided with an air outlet (122) for discharging the air generated by the air supply mechanism (130) into the inner liner (120); Preferably, the air outlet (122) and the exhaust hole provided on the inner liner (120) are the same.

4. The solar water heater anti-high temperature dry-sun protection device according to claim 3, characterized in that, Both the air inlet (121) and the air outlet (122) are located above the predetermined maximum water level of the inner liner (120); And / or, a one-way valve (133) is provided between the air supply mechanism (130) and the air inlet (121); Preferably, the one-way valve (133) is installed inside the air inlet (121).

5. The solar water heater anti-high temperature dry-sun protection device according to any one of claims 1-4, characterized in that, The solar water heater anti-high temperature dry sun device is also equipped with: a temperature monitoring unit (150) for monitoring the air temperature in the inner tank (120); The control unit (160) is electrically connected to the air supply mechanism (130) and the temperature monitoring unit (150); The control unit (160) controls the start and stop of the air supply mechanism (130) based on the air temperature monitored by the temperature monitoring unit (150).

6. The solar water heater anti-high temperature dry-sun protection device according to claim 5, characterized in that, The temperature monitoring unit (150) is located on the bottom wall of the inner liner (120), and the monitoring end extends upward to above the predetermined maximum water level of the inner liner (120).

7. The solar water heater anti-high temperature dry-sun protection device according to claim 5 or 6, characterized in that, The solar water heater anti-high temperature dry sun device is also equipped with an alarm unit. The control unit (160) controls the alarm unit to sound an alarm based on the air temperature in the inner tank (120) monitored by the temperature monitoring unit (150) and the air supply time of the air supply mechanism (130).

8. The solar water heater anti-high temperature dry-sun protection device according to any one of claims 1-7, characterized in that, The inner liner (120) is covered with a heat insulation layer (110), and the heat insulation layer (110) has a receiving cavity inside, and the air supply mechanism (130) is located in the receiving cavity; Preferably, the receiving cavity is located near the air inlet (121).

9. The solar water heater anti-high temperature dry-sun protection device according to any one of claims 1-8, characterized in that, The air supply mechanism (130) includes: Air inlet duct (131); A fan (132) is connected to the air inlet pipe (131) and is used to transport outside air to the inner liner (120) through the air inlet pipe (131).

10. A control method for a solar water heater anti-high temperature dry-sun exposure device as described in any one of claims 1-9, characterized in that, include: To obtain the air temperature inside the inner tank of a solar water heater; Once the air temperature inside the liner reaches the first preset temperature value, the air supply mechanism is activated to supply air into the liner. If the air temperature in the inner tank reaches the second preset temperature value, control the air supply mechanism to stop supplying air into the inner tank. The second preset temperature value is lower than the first preset temperature value.

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