CN107726642A - A kind of flat plate solar water heater and application method - Google Patents

Abstract

The invention discloses a flat-panel solar water heater and a use method thereof. The flat-panel solar water heater includes a heat collector, a connection device, a water tank and a control device. The heat collector and the water tank are connected through the connection device. The control device Data connection with the connection device; the control device includes a control component, a compressor and a sensor, the control component controls the compressor to realize the heating cycle of the flat solar water heater, and the sensors are respectively arranged on the set On the heater and the water tank; the present invention realizes the effective control of the connection relationship between the heat collection pipe and the heat exchange pipe through the control device and the connection device, so as to avoid that the temperature of the heat transfer medium is too low Adverse effects on the heating medium.

Description

A kind of flat solar water heater and using method

technical field

The invention relates to the field of solar light and heat utilization, in particular to a flat solar water heater and a using method.

Background technique

After decades of development, the technology of flat-panel solar water heaters has become more mature and perfect, and has advantages that other types of solar energy do not have. One is that it is especially suitable for the requirements of building integration. Due to its planar structure characteristics, the flat panel solar water heater has a flexible and random shape and structure in the application of solar energy building integration, and the design is not restricted by shape or size, and it is easy to realize the combination with building components. In addition, its heat collecting plate is made of metal, which can be easily connected by wire knot and welding, which provides convenience for installation, maintenance and use. Second, it has high thermal efficiency. Because the vacuum tube solar collector is composed of several vacuum tubes, and there are gaps between the tubes, when irradiated by sunlight, some solar energy is not accepted by the collector. The flat-panel solar collector is a continuous plane, and the entire collector surface can receive sunlight. Therefore, under the same lighting area and sunlight intensity, the daily average efficiency of flat panel solar water heaters is generally higher than that of vacuum tube solar water heaters by more than 6%. Third, it has good pressure bearing performance. Since the heat-absorbing plate of the flat-panel solar collector is made of metal materials, and the connection between the collector and the water storage tank is also made of metal parts, it can withstand the pressure from tap water and circulation pumps. Urban water generally adopts a centralized water supply system, and the pressure of tap water is relatively high, which requires a certain pressure for the hot water from the solar water heater, thereby reducing the pressure difference between the outlet of the water heater and the outlet of tap water. Provide convenience and comfort. Fourth, the performance is stable when forming a large system. For some large places, such as hotels, swimming pools, factories and other places, when using solar water heaters, many solar collectors are often required to form a large-scale water supply system. If a flat-plate solar collector is used, metal connections are used between the collector and the system instead of rubber and plastic parts like vacuum tube solar water heaters, which can ensure the stability of the entire system. Therefore, when establishing a large-scale solar water heating system, flat-panel solar heat collection is often used. In addition, due to the simple structure, convenient processing and large-scale production of the flat-panel solar water heater, it also has the characteristics of low manufacturing cost, low installation cost and long service life. This makes the utilization rate of domestic and foreign flat solar water heaters very high.

However, because the plate core of the existing flat-panel solar energy is not a vacuum, although most of them are filled with heat insulating materials, the heat insulation effect is still not good. The effective independent heat exchange function ensures the water temperature in the water tank, and it may even cause the temperature drop of the higher temperature water source in the water tank due to the low temperature of the heat transfer medium, which affects the normal use of people.

In view of the above-mentioned defects, the creator of the present invention has finally obtained the present invention through long-term research and practice.

Contents of the invention

In order to solve the above-mentioned technical defects, the technical solution adopted by the present invention is to provide a flat solar water heater, which includes a heat collector, a connection device, a water tank and a control device, and the heat collector and the water tank pass through the The connection device is connected, the control device is connected with the connection device data; the control device includes a control assembly, a compressor and a sensor, and the control assembly controls the compressor to realize the heating cycle of the flat panel solar water heater, The sensors are respectively arranged on the heat collector and the water tank.

Preferably, the heat collector includes a heat collection pipe, and the two ends of the heat collection pipe are respectively provided with a heat collection liquid outlet and a heat collection liquid inlet; the water tank includes a heat exchange pipe, and the two ends of the heat exchange pipe A heat exchange liquid outlet and a heat exchange liquid inlet are provided respectively; the connection device includes an upper circulation connection pipe and a lower circulation connection pipe, and the upper circulation connection pipe connects the heat collection liquid outlet and the heat exchange liquid inlet, The lower circulation connecting pipe connects the heat collecting liquid inlet and the heat exchanging liquid outlet.

Preferably, the connecting device further includes several sealing assemblies and several connecting assemblies, the sealing assemblies and the connecting assemblies are arranged in cooperation, and the sealing assemblies are arranged on the heat collecting pipe and the heat exchange pipe, so The connection assembly is arranged on the upper circulation joint and the lower circulation joint.

Preferably, the sealing assembly includes a main body, the main body is a hollow structure, and the main body is fixedly connected to the heat collection pipe and the heat exchange pipe; the port of the main body is along the pipe diameter direction Extending inwardly to form a first extension part, a second extension part is arranged inside the main body part, and an elastic element and a sealing plate are arranged in the internal space formed by the first extension part, the second extension part and the main body part One end of the elastic element is fixed on the second extension part, and the other end is connected to the sealing plate, and the sealing plate is closely attached to the first extension part under the action of the elastic element.

Preferably, the connection assembly includes a filter part, one end of the filter part is fixed on the inner surface of the connection body, and the other end protrudes from the port of the connection body.

Preferably, the connection assembly includes a connection body and a connection part, the connection body is a tubular structure, the connection part is a hollow structure, the connection body and the connection part are sleeved, and the port of the connection body is along the The tube radially extends outward to form a third extension, and the connecting portion is provided with a fourth extension, and the fourth extension is arranged in cooperation with the third extension.

Preferably, a method for using the flat panel solar water heater comprises the steps of,

S1, the control device collects temperature data;

S2. The control device controls the working state of the flat panel solar water heater by comparing the temperature data.

Preferably, step S1 specifically includes collecting temperature parameters through the sensors respectively arranged on the heat collector and the water tank, wherein the temperature parameters include the temperature of the heat transfer medium imported from the heat collecting liquid inlet, The outlet heat transfer medium temperature of the heat collecting liquid outlet and the heating medium temperature in the water tank, and upload the temperature parameters to the control component.

Preferably, step S2 is specifically, the user controls the use temperature of the heating medium by inputting a set temperature to the control component, and the control component processes the temperature data and the set temperature to obtain the starting temperature. Parameter α, and by judging the starting parameter α, control the flat panel solar water heater to be in different working states.

Preferably, the calculation formula of the start-up parameter α is:

Wherein, T1 is the temperature _of the heat transfer medium at the inlet of the heat collection liquid inlet; T2 is the temperature _of the heat transfer medium at the outlet of the heat collection liquid outlet; T3 is the temperature of the heating medium in the water tank _{; TΔ is} the temperature of the heat transfer medium at the heat collection liquid outlet T is the average temperature outside; T' is the deviation temperature, and its value is a fixed value, ranging from 5 to 10.

Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The effective control of the connection relationship between the heat collection pipe and the heat exchange pipe is realized through the control device and the connection device, and the heat transfer medium is avoided. Adverse effects on the heating medium when the temperature is too low; 2. Seal the ports of the heat collection pipe and the heat exchange pipe through the sealing assembly, reducing heat conduction in the heat cycle system during part replacement The leakage and overflow of the medium reduces maintenance loss; 3. Through the setting of the filter part, the communication between the main body part and the internal space of the connecting body is ensured, and the influence of pollutants in the thermal cycle system on the thermal cycle is avoided at the same time. The service life of the solar water heater is increased by regularly replacing the filter part, and the thermal conductivity of the heat-conducting medium is ensured.

Description of drawings

Fig. 1 is the structure view of flat panel solar water heater of the present invention;

Fig. 2 is the partial connection structure view of flat panel solar water heater of the present invention;

Fig. 3 is a structural view (front view) of the connecting device of the flat solar water heater of the present invention;

Fig. 4 is a structural view (side view) of the connecting device of the flat solar water heater of the present invention;

Fig. 5 is a structural view of the sealing assembly of the flat solar water heater of the present invention;

Fig. 6 is a structural view of the connection assembly of the flat solar water heater of the present invention.

The numbers in the figure indicate:

1-heat collector; 2-connection device; 3-water tank; 4-control device; 11-heat liquid outlet; 12-heat collector liquid inlet; 21-upper circulation connection; 22-lower circulation connection; 23-photovoltaic Battery board; 24-solenoid valve; 25-sealing component; 26-connection component; 31-heat exchange pipe; 32-heat exchange liquid outlet; 33-heat exchange liquid inlet; 34-water tank shell; 35-inner tank; 36-insulation layer; 41-compressor; 42-sensor; 211-first port; 212-second port; 221-third port; 222-fourth port; 251-main body; 252-first extension; 253-second extension; 253-second extension; 254-elastic element; 255-sealing plate; 261-connection body; 262-third extension; 263-filter; extension.

detailed description

The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

Embodiment one

As shown in Figure 1, Fig. 1 is the structural view of flat solar water heater of the present invention; Said flat solar water heater comprises heat collector 1, connecting device 2, water tank 3 and control device 4, and described heat collector 1 and described water tank 3 are connected through the connecting device 2, and form a thermal cycle system, which is filled with a heat transfer medium; the control device 4 includes a control assembly, a compressor 41 and a sensor 42, and the compressor 41 is used to ensure that the The heat conduction medium circulates in the heat cycle system, and the sensors 42 are respectively arranged on the heat collector 1 and the water tank 3 .

As shown in Figure 2, Figure 2 is a partial connection structure view of the flat panel solar water heater; the heat collector 1 includes a heat collecting pipe, and the heat collecting liquid outlet 11 and the heat collecting inlet are respectively arranged at both ends of the heat collecting pipe. Liquid port 12; the water tank 3 includes a heat exchange pipe 31, and the two ends of the heat exchange pipe 31 are respectively provided with a heat exchange liquid outlet 32 and a heat exchange liquid inlet 33; the water tank 3 also includes a water tank shell 34, which is set The inner tank 35 in the water tank shell 34 is filled with the heat insulation layer 36 between the water tank outer shell 34 and the inner tank 35 , and the heat exchange pipe 31 is arranged in the inner tank 35 . The connection device 2 includes an upper circulation connection 21 and a lower circulation connection 22, the upper circulation connection 21 includes a first port 211, a second port 212, the lower circulation connection 22 includes a third port 221, a fourth port 222, The first port 211, the second port 212, the third port 221, and the fourth port 222 are respectively connected to the heat collection outlet 11, the heat exchange inlet 33, the collection The hot liquid inlet 12 and the heat exchange liquid outlet are connected 32 .

As shown in Figure 3 and Figure 4, Figure 3 and Figure 4 are the structural views of the front view and side view of the connecting device respectively; The heat collection liquid inlet 12 is connected to the heat exchange liquid outlet 32 through the lower circulation connection pipe 22, and the heat collection liquid outlet 11 is connected to the water tank through the upper circulation connection pipe 21. 3, one side extends into the thermal insulation layer 36 and is connected with one end of the heat exchange pipe 31, and the other end of the heat exchange pipe 31 protrudes from the other side of the water tank 3 and connects with the lower circulation connecting pipe 22. The heat collecting liquid inlet 12 is connected, so that the heat collecting pipe, the heat exchange pipe 31 and the connecting device 2 form the heat circulation system, and realize the heating effect of the solar water heater.

The water tank 3 is provided with a water inlet and a water outlet connected to the inner tank 35 for replacing and using the heating medium (water) in the inner tank 35; The inner tank 35 is connected to the exhaust port and the sensor 42 for detecting the temperature and pressure in the inner tank 35, so as to ensure the stability of the water pressure in the inner tank 35 and realize the heating medium in the inner tank 35. (water) safe use.

The heating medium (water) enters the inner tank 35 through the water inlet, the heat-conducting medium circulates in the heat-exchanging pipe 31 and the heat-collecting pipe, and the heat-conducting medium is completed through the heat circulation system. Heat exchange with the heating medium, this setting separates the heating medium from the heat transfer medium, avoids the formation of scale in the heat collecting pipes arranged on the heat collector 1, and increases the 1 service life, reducing the cleaning work of the heat collection pipe; at the same time, when used in a low temperature environment, the heat transfer medium with antifreeze function can also be used to resist freezing, so as to avoid the internal freezing of the heat collection pipe under low temperature conditions. Pipe damage.

The heat exchange pipeline is provided with an expander, and the expander includes a connecting pipe and a bladder-like flexible body, one end of the connecting pipe is connected to the bladder-like flexible body, the expander also includes a housing, and the bladder The capsule-shaped flexible body is arranged in the housing, the housing is provided with a fixing plate, and a through hole is opened in the middle of the fixing plate, and one end of the bladder-shaped flexible body protrudes from the through hole and extends along The surface of the fixing plate extends to form a bent part, one end of the connecting pipe is formed with an external thread, and the lower end of the housing is formed with an internal thread, and one end of the connecting pipe is inserted into the housing to engage with the housing and The bending part is pressed tightly on the fixing plate, a breathing hole communicated with the atmosphere is opened on the casing, the other end of the connecting pipe is connected to the heat exchange pipe, and the expander Reduce the pressure of the thermal cycle system in due course to ensure the safe operation of the equipment.

The connection device 2 also includes a photovoltaic cell panel 23 and a solenoid valve 24, the upper circulation connection pipe 21 and the lower circulation connection pipe 22 are fixed at the bottom of the photovoltaic cell panel 23, the upper circulation connection pipe 21 and the lower circulation connection pipe The solenoid valves 24 are arranged in the connecting pipes 22 , and the photovoltaic panels 23 are connected to the solenoid valves 24 to supply power to the solenoid valves 24 ; meanwhile, the photovoltaic panels 23 supply power to the compressor 41 .

Preferably, the solar water heater also includes an electric heating auxiliary device, the electric heating auxiliary device is arranged on the water tank 3, and when the external environment cannot guarantee that the heat collector provides a normal heating effect, the electric heating The auxiliary device can directly heat the heating medium in the water tank 3 to meet people's needs for using the heating medium at a better temperature.

Embodiment two

Embodiment 2 is further improved on the basis of Embodiment 1. The specific improvement is that the first port 211, the second port 212, the third port 221, and the fourth port 222 all include sealing components 25 and connection assembly 26.

As shown in Figure 5, Figure 5 is a structural view of the sealing assembly; the sealing assembly 25 includes a main body 251, the main body 251 is preferably set as a hollow tubular structure, and one end of the main body 251 is threaded, welded or other reasonable connection ways to connect with the heat collection liquid outlet 11, the heat collection liquid inlet 12, the heat exchange liquid outlet 32, and the heat exchange liquid inlet 33, the other part of the main body 251 One end extends inwardly along the pipe diameter direction at the port position to form a first extension part 252, and the inner surface of the main body part 251 is provided with a second extension part 253, and both the first extension part 252 and the second extension part 253 are preferably Set in a ring shape, the first extension part 252, the second extension part 253 and the pipe wall of the main body part 251 form an inner space, and an elastic element 254 and a sealing plate 255 are arranged in the inner space, and the elastic element 254, one end is fixed on the second extension part 253, and the other end is connected with the sealing plate 255. The elastic element 254 is used to realize the tight fit between the sealing plate 255 and the first extension part 252, through The fitting connection between the sealing plate 255 and the first extension portion 252 realizes the sealing of the port of the sealing assembly 25 . The sealing plate 255 is preferably provided with a first sealing ring, and the sealing plate 255 is connected to the first extension portion 252 through the first sealing ring, so as to enhance the sealing effect of the sealing plate 255 on the port of the sealing assembly 25 .

As shown in FIG. 6, FIG. 6 is a structural view of the connection assembly; the connection assembly 26 includes a connection body 261, the connection body 261 is preferably set as a hollow tubular structure, and one end of the connection body 261 is along the port position. The pipe diameter extends outward to form a third extension part 262, the inner diameter of the connecting body 261 is the same as the inner diameter of the first extension part 252, and the third extension part 262 is arranged correspondingly to the first extension part 252. The third extension portion 262 is preferably provided with a second sealing ring, and when the first extension portion 252 and the third extension portion 262 are contacted and connected, the second sealing ring realizes that the first extension portion 252 and the first extension portion 252 The tightness of the connection between the three extensions 262 .

The connection assembly 26 also includes a filter part 263, the filter part 263 includes a support frame body and a filter body, the filter part is preferably configured as a truncated cone, and the end face of the filter part 263 with a larger diameter is a fixed end, so The end surface of the filter part 263 with a smaller diameter is the ejection end, the fixed end is fixed on the inner surface of the connecting body 262, and the length of the filter part 263 is larger than the distance between the fixed end and the third extension part 262. The length dimension causes the ejecting end to protrude from the port of the connecting body 261, and the supporting frame body is preferably set to be formed by two ring-shaped or circular members with different diameters as the end face members at both ends of the frame body and through the strip member The truncated conical frame body formed by connecting the end face members, the filter body is fixedly wrapped on the outer surface or inner surface of the support frame body, and the filter body is preferably set as a high-temperature fiber filter cloth with a protective net.

The connection assembly 26 also includes a connection portion 264, the connection portion 264 is configured as a ring-shaped member including a hollow portion, and the connection body 262 passes through the hollow portion to realize the sleeve of the connection body 262 and the connection portion 264. Next, the connection part 264 is provided with a fourth extension part 265, and the fourth extension part 265 is cooperating with the third extension part 262 to limit the movement of the connection part 264, so as to prevent the connection part 264 from contacting with the connection part 264. The connecting body 262 is disengaged; the inner surface of the connecting part 264 is provided with internal threads, the outer surface of the main body 251 is provided with external threads, and the sealing assembly 25 and the connecting assembly 26 are realized through the internal threads and the external threads. Screw the connection and make sure the connection is tight.

When the sealing assembly 25 and the connecting assembly 26 are connected, the internal thread of the connecting part 264 is aligned with the external thread and the connecting part 264 is rotated. With the rotation of the connecting part 264, the The distance between the main body part 251 and the connecting body 262 is gradually shortened, the filter part 263 is in contact with the sealing plate 255 and causes the sealing plate 255 to move, realizing the connection between the main body part 251 and the connecting body. 262 the communication of the internal space; continue to rotate the connecting part 264 until the first extension part 252 and the third extension part 262 are tightly connected to ensure the sealing effect of the sealing assembly 25 and the connecting assembly 26, because The self-locking effect of the threaded connection enhances the stability of the connection between the sealing component 25 and the connecting component 26 .

When the connection device of the solar water heater breaks down, by rotating the connection part, the connection state of the connection device with the water tank and the heat collector is released, due to the sealing effect of the sealing plate on the port , reduce the leakage and overflow of the heat conduction medium in the thermal circulation system during the replacement process, and reduce the maintenance loss; through the setting of the filter part, the communication between the main part and the internal space of the connecting main body is ensured, and at the same time, the solar energy is avoided The impact of pollutants in the thermal cycle system of the water heater on the thermal cycle, the service life of the solar water heater is increased by regularly replacing the filter part, and the thermal conductivity of the heat transfer medium is ensured.

Embodiment three

A method for using the flat panel solar water heater of the present invention, the specific steps include:

S1, the control device collects temperature data;

S2. The control device controls the working state of the flat panel solar water heater by comparing the temperature data.

Step S1 is specifically to collect temperature parameters through the sensors 42 respectively arranged on the heat collector 1 and the water tank 3, wherein the temperature parameters include the temperature of the heat transfer medium imported from the heat collector liquid inlet, the The temperature of the heat transfer medium at the outlet of the heat collecting liquid outlet and the temperature of the heating medium in the water tank 3, and upload the temperature parameters to the control component.

Step S2 is specifically, the user controls the use temperature of the heating medium by inputting a set temperature to the control component, and the set temperature is the heating medium set by the user for the flat solar water heater from the set temperature. The temperature when the water outlet flows out. The control component processes the temperature of the inlet heat transfer medium, the temperature of the outlet heat transfer medium, the temperature of the heating medium, and the set temperature to calculate a start-up parameter α, and by judging the start-up parameter α, The compressor, the electromagnetic valve and the electric heating auxiliary device are controlled so that the flat solar water heater is in different working states.

Specifically, when the start-up parameter α is positive and greater than 1, the compressor and the electromagnetic valve are opened, the upper circulation connection and the lower circulation connection are both in a connected state, and the compressor realizes the The heat-conducting medium circulates in the heat cycle system to complete the heating and heat preservation operations of the heating medium by the platform solar water heater; when the start-up parameter α is positive and less than or equal to 1, the compressor closed, the solenoid valve is opened, the upper circulation pipe and the lower circulation pipe are in communication, the heat transfer medium circulates autonomously in the heat circulation system, and the platform solar water heater completes the heating of the heating medium. Heat preservation operation: when the starting parameter α is a negative value, the compressor and the electromagnetic valve are closed, and the upper circulation connection and the lower circulation connection are in an isolated state, preventing the low-temperature heat transfer medium from flowing to the The position of the water tank reduces the temperature of the heating medium in the water tank, which affects the use of the platform solar water heater; when the startup parameter α is 0, the compressor and the electromagnetic valve are closed, and the upper circulation takes over and the The lower circulation connecting pipe is in an isolated state, and the electric heating auxiliary device is turned on to heat the heating medium in the water tank.

The formula for calculating the start-up parameter α is:

Wherein, T1 is the temperature of the heat _- transfer medium of the inlet liquid; T2 is the temperature of the heat-transfer medium of the liquid outlet; T3 is the temperature _of the heating medium _{; TΔ is} the set temperature; T is the average temperature outside; T' is the deviation temperature, and its value is a fixed value, usually 5-10.

The average external air temperature T is detected by a temperature detector installed in the external environment. By rounding down the ratio of T ₂ to T ₃ +T', the ratio of T ₃ to T _Δ , and the ratio of T ₂ to T _Δ , to expand the difference value of the starting parameter α under different data conditions, to Distinguishing the starting parameter α of starting different working states; when the difference between T ₂ and T ₃ is larger, the starting parameter α is larger; when T ₂ -T ₃ is greater than T', that is, the starting parameter α is When the value is positive and greater than 1, the heat conduction medium flowing out of the heat collecting tube has enough heat to complete the heat exchange with the heating medium, realize the heating operation of the heating medium, and accelerate the The flow of the heating medium ensures the heating efficiency of the flat solar water heater; when T ₂ -T ₃ is greater than or equal to 0 and less than T', that is, when the start-up parameter α is positive and less than or equal to 1, from the set The heat conduction medium flowing out of the heat pipe does not have enough heat to complete the heating operation of the heat medium, and the compressor is turned off. Due to the temperature difference of the heat conduction medium in the internal circulation system, the heat conduction medium Self-flowing in the internal circulation system, the flat-panel solar water heater is in heat preservation operation; when T2 is less _than T3, that is, when the start _- up parameter α is a negative value, the low-temperature heat transfer medium is prevented from flowing to the position of the water tank to reduce The temperature of the heating medium in the water tank, the compressor and the solenoid valve are closed; when the startup parameter α is 0, the compressor and the solenoid valve are closed, the upper circulation takes over and the lower The circulation connection is in an isolated state, and the electric heating auxiliary device is turned on to heat the heating medium in the water tank.

Through the calculation of the start-up parameter α and the judgment of the start-up parameter α, the environmental parameters of the different working states of the flat-panel solar water heater can be clearly distinguished, and the autonomous and intelligent switching of the different working states of the flat-panel solar water heater can be realized. It facilitates the use of the flat solar water heater, and at the same time avoids the influence of external environment changes on the use state of the flat solar water heater.

Since the heat transfer medium in the heat collecting tube will cause a certain amount of heat loss when it flows from the heat collecting tube to the water tank, it is necessary to set a correction temperature to correct the heat lost during the flow, and the correction temperature In the calculation formula of the starting parameter α is The lower the external temperature is, the greater the energy loss needs to be corrected, and the higher the correction temperature is to ensure that there is a sufficient temperature difference when the heat transfer medium flows into the water tank to complete effective heat exchange and achieve The heating operation of the heating medium in the water tank.

The above descriptions are only preferred embodiments of the present invention, and are only illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims (10)

1. a kind of flat plate solar water heater, it is characterised in that described including heat collector, attachment means, water tank and control device Heat collector is connected with the water tank by the attachment means, and the control device is connected with the attachment means data；It is described Control device includes control assembly, compressor and sensor, and the control assembly controls the compressor to realize the flat board The heat cycles of solar water heater, the sensor are separately positioned on the heat collector and the water tank.

2. flat plate solar water heater as claimed in claim 1, it is characterised in that the heat collector includes heat collecting pipeline, institute State heat collecting pipeline both ends and thermal-arrest liquid outlet and thermal-arrest inlet are set respectively；The water tank includes heat exchange pipeline, the heat exchanger tube Road both ends set heat exchange liquid outlet and heat exchange inlet respectively；The attachment means include upper circulation adapter and lower circulation adapter, The upper circulation adapter connects the thermal-arrest liquid outlet and the heat exchange inlet, and the lower circulation adapter connects the thermal-arrest and entered Liquid mouth and the heat exchange liquid outlet.

3. flat plate solar water heater as claimed in claim 2, it is characterised in that if the attachment means also include dry seal Component and some connection components, the seal assembly and the connection component are equipped with, and the seal assembly is arranged on described On heat collecting pipeline and the heat exchange pipeline, the connection component is arranged in the upper circulation adapter and the lower circulation adapter.

4. flat plate solar water heater as claimed in claim 3, it is characterised in that the seal assembly includes main part, institute It is hollow-core construction to state main part, and the main part is fixedly connected on the heat collecting pipeline and the heat exchange pipeline；The main body Extend inward to form the first extension along caliber direction at portion port, the second extension is set inside the main part, in institute State and elastic original paper and sealing plate be set in the inner space that the first extension, second extension and the main part are formed, Described elastic original paper one end is fixed on second extension, and the other end is connected with the sealing plate, in the elastic original paper In the presence of the sealing plate be brought into close contact with first extension.

5. flat plate solar water heater as claimed in claim 4, it is characterised in that the connection component includes filter house, institute State filter house one end to be fixed on the connection body inner surface, the other end stretches out from the connection body port.

6. flat plate solar water heater as claimed in claim 4, it is characterised in that the connection component include connection main body and Connecting portion, the connection main body is tubular structure, and the connecting portion is hollow-core construction, the connection main body and the connecting portion set Connect, stretch out to form the 3rd extension along caliber direction at the connection body port, the connecting portion sets the 4th extension Portion, the 4th extension are equipped with the 3rd extension.

A kind of 7. application method of the flat plate solar water heater described in any one of claim 1 to 6, it is characterised in that including Step,

S1, the control device collect temperature data；

S2, the control device control the working condition of the flat plate solar water heater by the temperature data.

8. application method as claimed in claim 7, it is characterised in that step S1 is specifically, by being separately positioned on the collection The sensor collection temperature parameter on hot device and the water tank, wherein the temperature parameter includes the thermal-arrest inlet Import heat-conducting medium temperature, the thermal-arrest liquid outlet outlet guide heat medium temperature and the water tank in heating medium temperature, And the temperature parameter is uploaded to the control assembly.

9. application method as claimed in claim 7, it is characterised in that step S2 is specifically, user passes through to the control Component inputs design temperature to control the temperature in use of heating medium, and the control assembly is to the temperature data and the setting Temperature carries out processing and start-up parameter α is calculated, and by the judgement to the start-up parameter α, controls the panel solar Water heater is in different working conditions.

10. application method as claimed in claim 9, it is characterised in that the calculation formula of the start-up parameter α is,

Wherein, T₁For the import heat-conducting medium temperature of the thermal-arrest inlet；T₂For the outlet heat-conducting medium of the thermal-arrest liquid outlet Temperature；T₃For the heating medium temperature in the water tank；T_ΔFor the design temperature；T is extraneous temperature on average；T ' is deviation temperature Degree, its numerical value is a fixed value, takes 5~10.