CN216282096U

CN216282096U - Energy-efficient serial-type solar heating system

Info

Publication number: CN216282096U
Application number: CN202120326109.XU
Authority: CN
Inventors: 倪传龙; 倪君杰; 陈娟
Original assignee: Zhenjiang Chenggong High Tech Co ltd
Current assignee: Zhenjiang Chenggong High Tech Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2022-04-12
Anticipated expiration: 2031-02-05

Abstract

An efficient energy-saving tandem solar heating system comprises a water storage tank, a circulating pipe, a heater unit, a stop valve and a circulating water pump; the water outlet end of the circulating pipe is arranged at the bottom end of one side of the water storage tank and is communicated with the side wall surface of the water storage tank; the water return end of the circulating pipe is arranged at the middle end of one side of the water storage tank and is communicated with the side wall surface of the water storage tank; the plurality of heater units are arranged in an array, two adjacent heater units are communicated end to end through circulating pipes, and the plurality of heater units are arranged in series through the circulating pipes; the stop valve is arranged at the water return end of the circulating pipe; the circulating water pump is arranged at the water return end of the circulating pipe and is arranged on one side of the stop valve. The utility model can adjust the number of the heater units, and can carry out modularized assembly, and the assembly process is simple; a single heater unit has a large heat exchange area and high heat exchange efficiency.

Description

Energy-efficient serial-type solar heating system

Technical Field

The utility model relates to the field of heat exchange equipment, in particular to a high-efficiency energy-saving tandem solar heating system.

Background

The heating system in the current market has various forms such as electric energy heating, solar energy heating, ground source heat exchange, combustion heat exchange and the like, the system correspondingly adopts the structural forms of water heaters such as an electric water heater, a solar water heater, an air energy heat pump water heater, an electric heating boiler and the like, and the most used forms are the electric water heater and the solar water heater. The solar water heater can be further divided into a water tank type or a heat pipe type, wherein the water tank type water heater heats water after irradiating a heat collecting plate or a solar panel by using the sun and stores the heated water in a water tank; the heat pipe type water heater stores water in a plurality of metal pipes or a plurality of vacuum glass pipes, and uses the sun to irradiate the water in the direct heating pipe. Compared with a water tank type solar heating system, the water tank type solar heating system has the following technical defects in the existing system structure: 1) the solar panel is required to be modularly assembled in the heating system, and the quantity, the installation position and the like of the solar panel cannot be adjusted after the system is installed, so that the heat exchange efficiency of the heating system by the solar panel is fixed, the heating system cannot be dynamically adjusted, and the high-efficiency heat exchange efficiency and the energy-saving requirement of the system are met. 2) No matter in the existing heating system, when a heat collecting plate, a solar panel or a metal tube structure is adopted for heat exchange, the designed installation angle needs to be matched according to the direct solar angle, so that the illumination receiving time of the solar heater is in the longest state, the calculation and installation processes are complex, and the solar heat exchanger cannot be always positioned on the optimal irradiation frame with sunlight, so that the system is in the highest heat exchange efficiency. 3) The heater structure among the solar heating system realizes the heat transfer effect through the illumination of rivers flowing fit, and water carries out heat treatment through the mode of flat board, pipeline flow or waters heating, and its heat transfer area is less, and the heat transfer effect is relatively poor, leads to heat exchange efficiency lower.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problems, the utility model discloses a high-efficiency energy-saving tandem solar heating system, which has the following specific technical scheme: an efficient energy-saving series solar heating system comprises a water storage tank, a circulating pipe, a heater unit, a stop valve and a circulating water pump;

the water outlet end of the circulating pipe is arranged at the bottom end of one side of the water storage tank and is communicated with the side wall surface of the water storage tank; the water return end of the circulating pipe is arranged at the middle end of one side of the water storage tank and is communicated with the side wall surface of the water storage tank; the number of the heater units is multiple, the heater units are arranged in an array, two adjacent heater units are communicated end to end through the circulating pipe, and the heater units are arranged in series through the circulating pipe; the stop valve is arranged at the water return end of the circulating pipe; the circulating water pump is arranged at the water return end of the circulating pipe and is arranged on one side of the stop valve.

Further, a single said heater unit comprises a base, feet, an inner liner, an outer shell and a temperature sensor; the interior of the base is of a hollow structure; the bottom end of the top surface of the base is of a groove-shaped structure in the circumferential direction to form a base clamping groove; one side of the bottom end of the top surface of the base is in a notch shape, the bottom end of the top end of the base is provided with a water outlet, and the water outlet penetrates through the base and extends into the base; the bottom end of the top surface of the base is in a through hole shape, so that a sensor assembling port is formed; the bottom foot is arranged at the bottom side of the inner part of the base, and the bottom foot and the bottom surface of the base are fixedly arranged; the inner part of the liner is of a hollow structure, the liner is arranged at the top end part of the base, the liner and the base are fixedly arranged, the top end part of the liner is in a through hole shape to form a water inlet, and the bottom end part of the liner and the top end part of the base are arranged in a sealing way; the shell is arranged on the outer side of the top surface of the base, the lining is circumferentially wrapped by the shell, the bottom end of the shell is circumferentially embedded into a base clamping groove of the base, and the shell and the base are arranged in a sealing mode through sealant; the temperature sensor is arranged on the outer side wall surface of the base, and the temperature sensor and the base are fixed in an inclined mode.

Further, the base is formed by injection molding; the bottom end of the base is of a disc-shaped structure, the top end of the base is of a round table-shaped structure with a narrow top end and a wide bottom end, and the diameter of the bottom side of the top end of the base is smaller than the inner diameter of the clamping groove of the base; the side wall surface of the top end of the base is of a concave arc structure.

Furthermore, the number of the feet is four, each foot is of a cylindrical structure and is of a hollow structure, and each foot and the base are of an integrated structure through injection molding; the end of each foot extends out of the top end face of the base.

Furthermore, the number of the sensor assembling ports is two, the two sensor assembling ports are respectively arranged on two sides of the water outlet, and each sensor assembling port is communicated with the corresponding bottom foot; and the two side wall surfaces corresponding to the bottom ends of the bottom feet are in a notch-shaped structure to form a bottom foot clamping groove.

Furthermore, the axial of the inner side wall of the top end face of the base is of a convex structure to form a base inserting ring, the outer diameter of the bottom end of the lining is consistent with the outer diameter of the top end of the base, the axial of the inner side wall of the bottom end face of the lining is of a groove-shaped structure to form a lining inserting groove, the base inserting ring is embedded into the lining inserting groove to realize the inserting fixation of the lining and the base and realize the sealing arrangement of the lining and the base through the circumferential coating of sealant.

Further, the inside of inside lining is equipped with the inlet tube, the inlet tube with the water inlet is the setting of lining up, the both sides of inlet tube are equipped with the inlet tube stationary blade, the inlet tube passes through both sides the inlet tube stationary blade with the inside wall face of inside lining is fixed to be set up.

Furthermore, the outside of inside lining is equipped with the water conservancy diversion piece, water conservancy diversion piece quantity is four, is circumference set up in the outer wall top of inside lining is a plurality of the water conservancy diversion piece is "ten" style of calligraphy setting, every the water conservancy diversion piece is vertical setting, and with the outer wall vertical fixation of inside lining, every the side of water conservancy diversion piece is the curve form.

Furthermore, the arrangement position of the temperature sensor is matched with the position of the sensor assembling port, and a lead of the temperature sensor penetrates through the sensor assembling port, extends into the corresponding footing and penetrates out of the corresponding footing clamping groove.

Further, the shell is made of aluminum.

Further, the outer wall surface of the shell is coated with a coating, and the coating adopts a carbon nano coating.

Furthermore, the circulating pipe is directly communicated with the bottom end part of the water inlet pipe through a water pipe, and the circulating pipe is communicated with the bottom end part of the water outlet through a water pipe elbow.

Furthermore, the number of the stop valves is at least two, and each stop valve is arranged on the pipeline of the circulating pipe in parallel.

Furthermore, the number of the circulating water pumps is at least two, and the circulating water pumps are arranged in the water storage tank; each stop valve is arranged on the pipeline of the circulating pipe in parallel and is arranged at the inlet end corresponding to the circulating water pump.

Further, the temperature sensor is arranged in a single heater unit at the tail end of the circulating pipe, and the temperature sensor in the heater unit is electrically connected with the controller through a conducting wire; the temperature sensor is also arranged in the water storage tank, and the temperature sensor in the water storage tank is electrically connected with the controller through a lead; and each circulating water pump is electrically connected with the controller through a lead respectively.

The utility model has the beneficial effects that:

1) the solar heating system can be used for arranging a plurality of heater units in an array mode, a single heater unit can be quickly assembled with the circulating pipe through the joint structure, a plurality of adjacent heater units are connected end to end through the pipeline to form a series connection structure, the number of the heater units in the heating system can be randomly disassembled and assembled and adjusted according to heating requirements, dynamic adjustment of the system is achieved, the heater units with different numbers are used, and energy-saving use of the solar heating system is achieved.

2) The utility model designs a heater for exchanging heat of water by using solar energy as a heat source, water can enter the shell through the top end and is discharged out of the shell from the bottom end after filling the cavity on the inner side of the shell, water forms an umbrella-shaped water film type flow channel to flow on the wall surface of the lining through the flow dispersion effect of the lining in the circulation process, and the water and the shell have a large heat exchange area, so that the heat conduction and the heat exchange between the shell and the water have high heat exchange efficiency.

3) The heater is arranged according to the structural form of the heater, the outer shell of the heater is arranged into a cylindrical structure, and the cylindrical structure is matched with a cylindrical base and a lining structure and is arranged in the outer shell; the appearance of the heater can circumferentially absorb the radiation of sunlight, and the heater can circumferentially absorb the radiated solar energy to the maximum extent no matter the sun is at any solar height and the sunlight is at any incident angle, so that the heater is always in a higher heat exchange efficiency state; meanwhile, the structure of the heater does not need to calculate geographical factors such as the height of the sun at noon, the angle of incidence of the sun and the like, so that the installation angle of the heater can be adjusted.

4) The utility model aims at the shell of the heater to be provided with the coating structure, so that the surface pores of the shell and the heat absorption performance of the shell are further improved on the basis of the original large-area shell heat exchange area, and the radiation heat exchange efficiency of the shell is improved.

Drawings

FIG. 1 is a system flow diagram of a solar heating system of the present invention.

Fig. 2 is a model connection diagram of the controller of the present invention.

Fig. 3 is a schematic view of the external structure of a single heater unit of the present invention.

Fig. 4 is a schematic structural view of the housing of the present invention.

Fig. 5 is a schematic view of the assembled structure of the base and the lining.

Fig. 6 is a schematic structural view of the base of the present invention.

FIG. 7 is a schematic end view of the liner of the present invention.

Fig. 8 is a bottom structure diagram of the base of the present invention.

List of reference numerals:

a water storage tank 1;

a circulation pipe 2;

a heater unit 3;

3-1 of a base;

the sensor comprises a base clamping groove 3-1-1, a water outlet 3-1-2, a sensor assembling port 3-1-3 and a base inserting ring 3-1-4;

3-2 parts of a bottom foot;

a bottom foot clamping groove 3-2-1;

3-3 of an inner liner;

3-3-1 parts of a water inlet, 3-3-2 parts of a lining insertion groove, 3-3-3 parts of a water inlet pipe, 3-3-4 parts of a flow deflector and 3-3-5 parts of a water inlet pipe fixing piece;

3-4 parts of a shell;

3-5 of a temperature sensor;

a stop valve 4;

a circulating water pump 5;

and a controller 6.

Detailed Description

In order to make the technical scheme of the utility model clearer and clearer, the utility model is further described with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent replacement and conventional reasoning on the technical characteristics of the technical scheme of the utility model falls into the protection scope of the utility model. The fixed connection, the fixed arrangement and the fixed structure mentioned in the embodiment are known technologies known to those skilled in the art, such as gluing, welding, screwing, bolt-nut connection, riveting and the like.

With the attached drawings, the efficient energy-saving tandem solar heating system comprises a water storage tank 1, a circulating pipe 2, a heater unit 3, a stop valve 4 and a circulating water pump 5;

the water outlet end of the circulating pipe 2 is arranged at the bottom end of one side of the water storage tank 1 and is communicated with the side wall surface of the water storage tank 1; the water return end of the circulating pipe 2 is arranged at the middle end of one side of the water storage tank 1 and is communicated with the side wall surface of the water storage tank 1; the number of the heater units 3 is multiple, the heater units 3 are arranged in an array, two adjacent heater units 3 are communicated end to end through the circulating pipe 2, and the heater units 3 are connected in series through the circulating pipe 2; the stop valve 4 is arranged at the water return end of the circulating pipe 2; the circulating water pump 5 is arranged at the water return end of the circulating pipe 2 and is arranged on one side of the stop valve 4.

Further, a single heater unit 3 comprises a base 3-1, a foot 3-2, an inner liner 3-3, an outer shell 3-4 and a temperature sensor 3-5; the inside of the base 3-1 is of a hollow structure; the bottom end of the top surface of the base 3-1 is of a groove-shaped structure in the circumferential direction to form a base clamping groove 3-1-1; one side of the bottom end of the top surface of the base 3-1 is in a notch shape, the bottom end of the top end of the base 3-1 is provided with a water outlet 3-1-2, and the water outlet 3-1-2 penetrates through the base 3-1 and extends into the base 3-1; the bottom end of the top surface of the base 3-1 is in a through hole shape to form a sensor assembling port 3-1-3; the foot 3-2 is arranged at the bottom side of the inner part of the base 3-1, and the foot 3-2 is fixedly arranged with the bottom surface of the base 3-1; the inner liner 3-3 is of a hollow structure, the inner liner 3-3 is arranged at the top end part of the base 3-1, the inner liner 3-3 and the base 3-1 are fixedly arranged, the top end part of the inner liner 3-3 is in a through hole shape to form a water inlet 3-3-1, and the bottom end part of the inner liner 3-3 and the top end part of the base 3-1 are hermetically arranged; the shell 3-4 is arranged on the outer side of the top surface of the base 3-1, the lining 3-3 is circumferentially wrapped by the shell 3-4, the bottom end of the shell 3-4 is circumferentially embedded into the base clamping groove 3-1-1 of the base 3-1, and the shell 3-4 and the base 3-1 are arranged in a sealing mode through sealant; the temperature sensor 3-5 is arranged on the outer side wall surface of the base 3-1, and the temperature sensor 3-5 and the base 3-1 are obliquely fixed.

Further, the base 3-1 is formed by injection molding; the bottom end of the base 3-1 is of a disc-shaped structure, the top end of the base 3-1 is of a truncated cone-shaped structure with a narrow top end and a wide bottom end, and the diameter of the bottom side of the top end of the base 3-1 is smaller than the inner diameter of the base clamping groove 3-1-1; the side wall surface of the top end of the base 3-1 is of a concave arc structure.

Furthermore, the number of the feet 3-2 is four, each foot 3-2 is of a cylindrical structure and is of a hollow structure, and each foot 3-2 and the base 3-1 are formed into an integral structure through injection molding; the end of each foot 3-2 extends out of the top end face of the base 3-1.

Furthermore, the number of the sensor assembly ports 3-1-3 is two, the two sensor assembly ports are respectively arranged on two sides of the water outlet 3-1-2, and each sensor assembly port 3-1-3 is communicated with the corresponding bottom foot 3-2; the two side wall surfaces corresponding to the bottom ends of the feet 3-2 are in a notch-shaped structure to form a foot clamping groove 3-2-1.

Furthermore, the inner side wall of the top end face of the base 3-1 is axially of a convex structure to form a base inserting ring 3-1-4, the outer diameter of the bottom end of the lining 3-3 is consistent with the outer diameter of the top end of the base 3-1, the inner side wall of the bottom end face of the lining 3-3 is axially of a groove-shaped structure to form a lining inserting groove 3-3-2, the base inserting ring 3-1-4 is embedded into the lining inserting groove 3-3-2 to realize the inserting and fixing of the lining 3-3 and the base 3-1, and the lining 3-3 and the base 3-1 are arranged in a sealing mode through circumferential coating of sealant.

Furthermore, a water inlet pipe 3-3-3 is arranged inside the lining 3-3, the water inlet pipe 3-3-3 is communicated with the water inlet 3-3-1, water inlet pipe fixing pieces 3-3-5 are arranged on two sides of the water inlet pipe 3-3, and the water inlet pipe 3-3-3 is fixedly arranged on the inner side wall surface of the lining 3-3 through the water inlet pipe fixing pieces 3-3-5 on the two sides.

Furthermore, flow deflectors 3-3-4 are arranged outside the lining 3-3, the number of the flow deflectors 3-3-4 is four, the flow deflectors are circumferentially arranged at the top end of the outer wall surface of the lining 3-3, the flow deflectors 3-3-4 are arranged in a cross shape, each flow deflector 3-3-4 is longitudinally arranged and is vertically fixed with the outer wall surface of the lining 3-3, and the side edge of each flow deflector 3-3-4 is in a curve shape.

Furthermore, the arrangement position of the temperature sensor 3-5 is matched with the position of the sensor assembly opening 3-1-3, and a lead of the temperature sensor 3-5 penetrates through the sensor assembly opening 3-1-3, extends into the corresponding footing 3-2 and penetrates out of the corresponding footing clamping groove 3-2-1.

Further, the shells 3-4 are made of aluminum.

Further, the outer wall surfaces of the shells 3-4 are coated with coatings, and the coatings adopt carbon nano coatings.

Further, the circulating pipe 2 is directly communicated with the bottom end part of the water inlet pipe 3-3-3 through a water pipe, and the circulating pipe 2 is communicated with the bottom end part of the water outlet 3-1-2 through a water pipe elbow.

Further, the number of the stop valves 4 is at least two, and each stop valve 4 is arranged on the pipeline of the circulation pipeline 2 in parallel.

Furthermore, the number of the circulating water pumps 5 is at least two, and the circulating water pumps 5 are arranged in the water storage tank 1; each stop valve 4 is arranged on the pipeline of the circulating pipe 2 in parallel and is arranged at the inlet end corresponding to the circulating water pump 5.

Further, the temperature sensors 3-5 are arranged in the single heater unit 3 at the tail end of the circulating pipe 2, and the temperature sensors 3-5 in the heater unit 3 are electrically connected with the controller 6 through conducting wires; the temperature sensor 3-5 is also arranged in the water storage tank 1, and the temperature sensor 3-5 in the water storage tank 1 is electrically connected with the controller 6 through a lead; and each circulating water pump 5 is electrically connected with the controller 6 through a lead respectively.

The principle of the solar heating system is as follows:

connecting a plurality of heater units in series through circulating pipes, and vertically arranging the plurality of heater units; the water in the water storage tank flows through the circulating pipe and sequentially enters each heater unit, the water in the circulating pipe enters the water inlet pipe and flows into the cavity in the shell through the water outlet, the water is circumferentially distributed on the side wall surface of the lining, the water flows downwards along the side wall surfaces of the lining and the base under the action of the flow deflectors and fills the cavity between the shell and the base and the lining, and the water is discharged from the water outlet to the circulating pipe and enters the next heater unit; through the continuous heating action in the plurality of heater units, water is sent into the water storage tank again through the stop valve and the circulating water pump;

when water flows into the plurality of heater units, the temperature sensor monitors the temperature of the water flow in the tail end heating unit and transmits temperature data to the controller; the temperature sensor simultaneously monitors the temperature of the water area in the water storage tank; the controller adjusts the flow speed of the circulating water pump according to the difference value of the temperature data, and when the difference value of the temperature data is larger, the controller controls the circulating water pump to increase the flow rate and improve the flow speed of water flow in the circulating pipe; when the difference value of the temperature data is smaller, the controller controls the circulating water pump to reduce the flow, and the flow speed of water flow in the circulating pipe is reduced.

The assembly principle of the heater unit of the utility model is as follows:

firstly, arranging a lining buckle on the top end surface of a base, embedding a base inserting ring into a lining inserting groove to realize the head-to-tail inserting and fixing of the base and the lining, and then coating sealant on the joint of the base and the lining to realize the sealing arrangement between the base and the lining; then, a lead of the temperature sensor penetrates into the sensor assembly port and penetrates out of the bottom foot and the bottom foot clamping groove, the temperature sensor is fixed on the side wall surface of the base through fitting, and the sensor assembly port on one side is sealed through sealant; the sensor assembling port on the other side is sealed by adhering an adhesive tape to the opening of the sensor assembling port from the inside to be used as a sensor assembling port for reservation; then, the shell is buckled on the top surface of the base from the top end, a cavity structure is formed between the interior of the shell and the outer sides of the base and the lining, the bottom end of the shell is embedded into the base clamping groove, the shell and the base are fixedly connected in an inserting mode, sealant is coated on the joint of the base and the shell, sealing arrangement between the base and the shell is achieved, and assembly of the solar heater is completed.

The utility model has the beneficial effects that:

Claims

1. An efficient energy-saving series solar heating system is characterized by comprising a water storage tank (1), a circulating pipe (2), a heater unit (3), a stop valve (4) and a circulating water pump (5); the water outlet end of the circulating pipe (2) is arranged at the bottom end of one side of the water storage tank (1) and is communicated with the side wall surface of the water storage tank (1); the water return end of the circulating pipe (2) is arranged at the middle end of one side of the water storage tank (1) and is communicated with the side wall surface of the water storage tank (1); the number of the heater units (3) is multiple, the heater units (3) are arranged in an array, two adjacent heater units (3) are communicated end to end through the circulating pipe (2), and the heater units (3) are connected in series through the circulating pipe (2); the stop valve (4) is arranged at the water return end of the circulating pipe (2); the circulating water pump (5) is arranged at the water return end of the circulating pipe (2) and is arranged on one side of the stop valve (4).

2. An energy efficient tandem solar heating system according to claim 1, characterized in that a single said heater unit (3) comprises a base (3-1), a footing (3-2), an inner lining (3-3), an outer shell (3-4) and a temperature sensor (3-5); the interior of the base (3-1) is of a hollow structure; the bottom end of the top surface of the base (3-1) is of a groove-shaped structure in the circumferential direction to form a base clamping groove (3-1-1); one side of the bottom end of the top surface of the base (3-1) is in a notch shape, a water outlet (3-1-2) is formed in the bottom end of the top end of the base (3-1), and the water outlet (3-1-2) penetrates through the base (3-1) and extends into the base (3-1); the bottom end of the top surface of the base (3-1) is in a through hole shape, and a sensor assembling port (3-1-3) is formed; the bottom foot (3-2) is arranged at the bottom side of the inner part of the base (3-1), and the bottom foot (3-2) is fixedly arranged with the bottom surface of the base (3-1); the inner part of the liner (3-3) is of a hollow structure, the liner (3-3) is arranged at the top end part of the base (3-1), the liner (3-3) and the base (3-1) are fixedly arranged, the top end part of the liner (3-3) is of a through hole shape to form a water inlet (3-3-1), and the bottom end part of the liner (3-3) and the top end part of the base (3-1) are arranged in a sealing mode; the shell (3-4) is arranged on the outer side of the top surface of the base (3-1), the shell (3-4) circumferentially wraps the lining (3-3), the bottom end of the shell (3-4) is circumferentially embedded into a base clamping groove (3-1-1) of the base (3-1), and the shell (3-4) and the base (3-1) are arranged in a sealing mode through sealant; the temperature sensor (3-5) is arranged on the outer side wall surface of the base (3-1), and the temperature sensor (3-5) and the base (3-1) are obliquely fixed.

3. An efficient and energy-saving series solar heating system as claimed in claim 2, wherein the number of the sensor assembling ports (3-1-3) is two, and the two sensor assembling ports are respectively arranged at two sides of the water outlet (3-1-2), and each sensor assembling port (3-1-3) is arranged to penetrate through the corresponding foot (3-2); the two side wall surfaces corresponding to the bottom ends of the bottom feet (3-2) are in a notch-shaped structure to form a bottom foot clamping groove (3-2-1).

4. An energy efficient tandem solar heating system according to claim 2, the inner side wall of the top end surface of the base (3-1) is of a convex structure in the axial direction to form a base plug-in ring (3-1-4), the outer diameter of the bottom end of the inner liner (3-3) is consistent with the outer diameter of the top end of the base (3-1), the inner side wall of the bottom end surface of the lining (3-3) is axially of a groove-shaped structure to form a lining splicing groove (3-3-2), the base inserting ring (3-1-4) is embedded into the lining inserting groove (3-3-2) to realize the inserting and fixing of the lining (3-3) and the base (3-1), and the inner liner (3-3) and the base (3-1) are arranged in a sealing manner by coating sealant in the circumferential direction.

5. The efficient energy-saving tandem solar heating system according to claim 2, wherein a water inlet pipe (3-3-3) is arranged inside the inner liner (3-3), the water inlet pipe (3-3-3) is communicated with the water inlet (3-3-1), water inlet pipe fixing pieces (3-3-5) are arranged on two sides of the water inlet pipe (3-3-3), and the water inlet pipe (3-3-3) is fixedly arranged on the inner side wall surface of the inner liner (3-3) through the water inlet pipe fixing pieces (3-3-5) on the two sides.

6. The efficient energy-saving series solar heating system according to claim 2, wherein the outside of the inner liner (3-3) is provided with four flow deflectors (3-3-4), the number of the flow deflectors (3-3-4) is four, the flow deflectors are circumferentially arranged at the top end of the outer wall surface of the inner liner (3-3), the flow deflectors (3-3-4) are arranged in a cross shape, each flow deflector (3-3-4) is longitudinally arranged and is vertically fixed with the outer wall surface of the inner liner (3-3), and the side edge of each flow deflector (3-3-4) is curved.

7. An energy efficient tandem solar heating system according to claim 6, wherein the outer wall of the housing (3-4) is coated with a coating of carbon nano-coating.

8. An energy-efficient series solar heating system as claimed in claim 2, wherein the number of said stop valves (4) is at least two, and each said stop valve (4) is arranged in parallel on the pipeline of said circulating pipe (2).

9. An energy-efficient series solar heating system as claimed in claim 2, wherein the number of said circulating water pumps (5) is at least two, said circulating water pumps (5) being arranged in said water storage tank (1); each stop valve (4) is arranged on the pipeline of the circulating pipe (2) in parallel and is arranged at the inlet end corresponding to the circulating water pump (5).

10. An energy-efficient series solar heating system as claimed in claim 2, wherein said temperature sensors (3-5) are arranged in a single heater unit (3) at the end of the circulation pipe (2), the temperature sensors (3-5) in said heater unit (3) are electrically connected with the controller (6) through wires; the temperature sensor (3-5) is also arranged in the water storage tank (1), and the temperature sensor (3-5) in the water storage tank (1) is electrically connected with the controller (6) through a lead; and each circulating water pump (5) is electrically connected with the controller (6) through a lead.