阅读说明：本技术 具有炸裂防护功能的太阳能热水器 (Solar water heater with burst protection function ) 是由 王永菊 杨育芬 于 2019-11-03 设计创作，主要内容包括：本领域属于太阳能领域,具体涉及一种具有炸裂防护功能的太阳能热水器,包括机架、保温水箱、集热管和用于控制保温水箱的控制系统,保温水箱固定在机架上,集热管与保温水箱连通且集热管倾斜设置,还包括第一电磁铁、滑轨、齿条、齿轮和挡板,挡板分别涂油反光和吸光涂层,挡板通过转动机构转动设置在机架上,且挡板的位置与集热管相对应；齿轮固定在转动机构上,滑轨固定在机架上,齿条滑动设置在滑轨上,第一电磁铁固定在机架上且位于齿条的上方,第一电磁铁通电后可吸引齿条移动,齿条与齿轮相互啮合。与传统的太阳能热水器相比,本方案有效地控制了停电时突然来电时集热管产生过大的温差情况,进而有效地减少了集热管炸裂的几率。(The field belongs to the field of solar energy, and particularly relates to a solar water heater with a crack protection function, which comprises a rack, a heat preservation water tank, heat collecting pipes and a control system for controlling the heat preservation water tank, wherein the heat preservation water tank is fixed on the rack, the heat collecting pipes are communicated with the heat preservation water tank and are obliquely arranged, the solar water heater also comprises a first electromagnet, a slide rail, a rack, a gear and a baffle, the baffle is respectively coated with a light reflecting coating and a light absorbing coating, the baffle is rotatably arranged on the rack through a rotating mechanism, and the position of the baffle corresponds to that of the heat; the gear is fixed on the rotating mechanism, the sliding rail is fixed on the rack, the rack is arranged on the sliding rail in a sliding mode, the first electromagnet is fixed on the rack and located above the rack, the rack can be attracted to move after the first electromagnet is electrified, and the rack is meshed with the gear. Compared with the traditional solar water heater, the scheme effectively controls the condition that the heat collecting tube generates overlarge temperature difference when the power is suddenly turned on when the power is off, and further effectively reduces the probability of burst of the heat collecting tube.)

1. Solar water heater with burst safeguard function, including frame, holding water box, thermal-collecting tube and be used for controlling holding water box's control system, holding water box fixes in the frame, the thermal-collecting tube sets up its characterized in that with holding water box intercommunication and thermal-collecting tube slope: the solar collector tube heat collecting device is characterized by further comprising a first electromagnet, a sliding rail, a rack, a gear and a baffle, wherein one surface of the baffle is coated with a light reflecting coating, the other surface of the baffle is coated with a light absorbing coating, the baffle is rotatably arranged on the rack through a rotating mechanism, and the position of the baffle corresponds to that of the heat collecting tube; the rack is fixed on the rack, the rack is arranged on the rack in a sliding mode, the first electromagnet is fixed on the rack and located above the rack, the rack can be attracted to move after the first electromagnet is electrified, and the rack is meshed with the gear.

2. The solar water heater with the explosion protection function according to claim 1, wherein: the rotating mechanism comprises a connecting rod, a sleeve and a bearing, one end of the connecting rod is fixed on the rack, the other end of the connecting rod is fixed at the bottom of the heat collecting tube, two coaxial bearings are arranged on the connecting rod, the sleeve is sleeved on the connecting rod, and the sleeve is rotatably arranged on the bearing.

3. The solar water heater with the explosion protection function according to claim 1, wherein: the baffle is made of light materials.

4. The solar water heater with the explosion protection function according to claim 1, wherein: the rack is an iron rack, an antirust coating is coated on the rack, and the gear is a stainless steel gear.

5. The solar water heater with the explosion protection function according to claim 4, wherein: still include the balancing weight, the balancing weight is fixed at the lower extreme of rack.

6. The solar water heater with the explosion protection function according to claim 5, wherein: the counterweight block is a magnet, the second electromagnet is positioned below the counterweight block, and the magnetic pole of the second electromagnet is the same as that of the counterweight block when the second electromagnet is electrified.

Technical Field

The field belongs to the field of solar energy, and particularly relates to a solar water heater with a burst protection function.

Background

The traditional energy is increasingly in short supply, and the development of renewable energy is accelerated to be commonly recognized by all countries in the world, wherein solar energy is taken as one of the renewable energy, and has multiple purposes in the aspects of living needs of people, such as power generation, heating, hot water supply and the like. However, only solar water heaters are currently available in commercial form in large quantities.

A solar water heater is a device that heats water using sunlight. The solar water heater is classified into a vacuum tube type solar water heater and a flat plate type solar water heater, and the vacuum tube type solar water heater occupies 95% of domestic market share. The vacuum tube type domestic solar water heater is composed of heat collecting tube, water storage tank and support, and can convert solar energy into heat energy, and mainly depends on the vacuum heat collecting tube, and utilizes the principle of that hot water floats upwards and cold water sinks to make water produce microcirculation to obtain the required hot water.

The solar water heater mainly comprises a frame, a heat-preservation water tank, a heat collecting pipe and a control system for controlling the heat-preservation water tank. The heat collecting pipe is one of the most important parts in the solar water heater, and the performance of the solar water heater is greatly influenced by the quality of the heat collecting pipe. The heat collecting pipe is a part which is easy to crack, particularly, when the temperature is high in summer, the vacuum pipe is in an air drying state, the temperature of the vacuum pipe is generally 250-300 ℃, once the water in the heat preservation water tank is less, the temperature of the vacuum pipe cannot be rapidly transmitted out, and when water is supplemented suddenly, the temperature is suddenly reduced, so that the heat collecting pipe is easy to crack. Therefore, a water level sensor is usually arranged in the heat preservation water tank, when the water in the heat preservation water tank is insufficient, water can be automatically supplemented, and the situation that the temperature in the heat collecting pipe cannot be transmitted out is avoided.

However, during peak periods of electricity consumption in summer, especially in some remote areas, power failure is more likely to occur. And once power is cut off, the automatic water replenishing equipment cannot work. At the moment, once the temperature of the heat collecting pipe is continuously increased due to less water in the heat preservation water tank, once the power is supplied, newly-supplemented low-temperature water has great temperature difference with the heat collecting pipe, so that the heat collecting pipe is easy to crack.

Disclosure of Invention

The invention aims to provide a solar water heater with a burst protection function, which solves the problem that a heat collecting pipe is easy to burst after power failure.

In order to solve the problems, the scheme provides a solar water heater with a burst protection function, which comprises a rack, a heat preservation water tank, heat collection tubes and a control system for controlling the heat preservation water tank, wherein the heat preservation water tank is fixed on the rack, the heat collection tubes are communicated with the heat preservation water tank and are obliquely arranged, the solar water heater also comprises a first electromagnet, a slide rail, a rack, a gear and a baffle, one surface of the baffle is coated with a reflective coating, the other surface of the baffle is coated with a light absorption coating, the baffle is rotatably arranged on the rack through a rotating mechanism, and the position of the baffle corresponds to that of the heat collection tubes; the rack is fixed on the rack, the rack is arranged on the rack in a sliding mode, the first electromagnet is fixed on the rack and located above the rack, the rack can be attracted to move after the first electromagnet is electrified, and the rack is meshed with the gear.

The principle of the scheme is as follows: in fact, the reason for the burst of the heat collecting pipe is as follows: the excessive temperature difference of the heat collecting pipe. Therefore, the core principle of the scheme is that after the automatic water replenishing device fails during power failure, the problem of the heat collecting tube is solved, and the heat collecting tube is prevented from generating overlarge temperature difference during sudden power on after power failure.

When the power is cut off, the first electromagnet is powered off, at the moment, under the action of gravity, the rack moves downwards, and the rotating mechanism is pushed to rotate, so that the baffle plate rotates upwards, sunlight is blocked, and continuous heating of the heat collecting pipe is reduced. When a call is received, the first electromagnet is electrified to generate magnetic force, the rack is attracted upwards, and the rotating mechanism is pushed to rotate, so that the baffle plate rotates downwards, and the baffle plate is prevented from blocking sunlight.

The beneficial effect of this scheme lies in: one side of the baffle is coated with a reflective coating, and the other side of the baffle is coated with a light-absorbing coating, so that the reflective coating faces the heat collecting tube under normal conditions, and the heating efficiency of the heat collecting tube is higher. When power is cut off, the solar collector can well block sunlight, and the heat collector tube is prevented from being continuously heated. And the setting of first electro-magnet can the very first time reaction when having a power failure, need not personnel manual operation, can accomplish the rotation of baffle automatically and carry out the sunshade. Compared with the traditional solar water heater, the scheme effectively controls the condition that the heat collecting tube generates overlarge temperature difference when the power is suddenly turned on when the power is off, and further effectively reduces the probability of burst of the heat collecting tube.

Further, slewing mechanism includes connecting rod, sleeve and bearing, the one end of connecting rod is fixed in the frame, and the other end is fixed in the bottom of thermal-collecting tube, be equipped with two coaxial bearings on the connecting rod, the sleeve cover is established on the connecting rod, and the sleeve rotates and establishes on the bearing. Simple structure and low cost.

Further, the baffle is made of light materials. The baffle made of light material is easier to rotate. A rubber sheet or an opaque pvc sheet or the like may be used.

Further, the rack is an iron rack, an antirust coating is coated on the rack, and the gear is a stainless steel gear. The iron rack has low cost and good magnetism, and the arrangement of the antirust coating effectively prolongs the service life of the rack. The stainless steel gear has no magnetic force, cannot obstruct the up-and-down movement of the magnet, and is not damaged relative to the rack. Therefore, the rack is replaced regularly, and the operation is more convenient.

Further, still include the balancing weight, the balancing weight is fixed at the lower extreme of rack. The setting of balancing weight can be better make rack downstream.

The counterweight block is a magnet, the second electromagnet is positioned below the counterweight block, and the magnetic poles of the opposite surfaces of the second electromagnet and the counterweight block are the same when the second electromagnet is electrified. When the power is on, the second electromagnet generates magnetic force to push the counterweight block to move upwards, so that the first electromagnet can suck the rack without excessive power.

Drawings

FIG. 1 is a schematic view of a normal situation in embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the embodiment 1 of the present invention during power failure.

Fig. 3 is a schematic view of embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the heat collecting device comprises a frame 10, a water tank 20, a heat collecting pipe 30, a connecting rod 41, a bearing 42, a sleeve 43, a baffle 44, a rack 51, a first electromagnet 52, a balancing weight 53 and a second electromagnet 54.