CN212227204U - Smart Sensing Heat Recovery Solar Heating Roof System - Google Patents

Abstract

The utility model belongs to the technical field of natural energy utilization, and relates to an intelligent sensing heat recovery solar heating roof system. The utility model fully recycles and utilizes the heat of the flue gas in the heated kang and the coal boiler chimney and the radiant heat on the high temperature upper surface of the kang, which are common in traditional farm houses in Northeast China, and at the same time fully utilizes the solar radiant heat, so that the heat of the flue gas, the radiant heat on the surface of the kang and the radiant heat are fully utilized. The solar radiant heat is effectively collected, transmitted and stored in the roof, and radiated to the room through the radiant heating components installed in the partition wall. The utility model innovatively adds a heat recovery device on the basis of the traditional solar air heat collector to recover the waste heat and radiant heat of the flue gas generated by the daily life and heating of the farm house, and further considers the intelligent control of the switching process by measuring the air temperature. It realizes the problem of automatic control of heat recovery and heat utilization of farm houses, and realizes the improvement of indoor comfort of farm houses.

Description

Smart Sensing Heat Recovery Solar Heating Roof System

technical field

The utility model belongs to the technical field of natural energy utilization, and relates to an intelligent sensing heat recovery solar energy heating roof system, which is an intelligent control system capable of recovering the heat of the flue gas and radiant heat of the kang surface of traditional farmhouses in the north for heating, and making full use of the solar energy. The heat recovery solar heating roof system mainly solves the problem of passive solar heating in northern farm houses in winter, and also solves the problem of heat recovery and utilization of farm houses.

Background technique

At present, most of the northern regions use the heating method of kang or coal boiler radiator, but there is a phenomenon that the high temperature flue gas heat of the heated kang and coal boiler is not fully utilized and is directly discharged outdoors, resulting in a large amount of energy waste. At the same time, the high-temperature upper surface of the heated kang does not have a good heating effect most of the time, and a large amount of radiant heat is lost from the roof, causing a waste of energy. There are few technologies for heat recovery of kang. For example, energy-saving water heating and ventilation kang (patent number CN208652683U) only utilizes the heat transferred from the kang to the ground by radiation, while in rural buildings, the technology for heat recovery of chimney flue gas is based on Natural materials use the building integrated biomass combustion flue gas purification heat recovery device (patent number CN203323152U), and the chimney flue gas is heat recovered by means of a fire wall. The heat recovery and utilization is relatively simple, and the heating effect is not good.

The traditional solar air collector has the characteristics that it is greatly affected by the weather, the temperature fluctuation range is unstable, and it cannot independently bear the heating demand in winter. For this reason, most of the existing technologies are improved by means of heat collection and heat storage, such as a device for heating using solar heat collecting panels and heat storage walls for heat storage (Patent No. CN209386403U) and a heat storage flat panel solar air collector Heater (patent number CN207999958U), etc., there is no technology that combines the energy recovery of farmhouse chimney flue gas with solar air collector.

Utility model content

In order to solve the above problems, the present invention provides an intelligent sensing heat recovery solar heating roof system. The utility model fully recycles and utilizes the heat of the flue gas in the heated kang and the coal boiler chimney and the radiant heat on the high temperature upper surface of the kang, which are common in traditional farm houses in Northeast China, and at the same time fully utilizes the solar radiant heat, so that the heat of the flue gas, the radiant heat on the surface of the kang and the radiant heat are fully utilized. The solar radiant heat is effectively collected, transmitted and stored in the roof, and radiated to the room through the radiant heating components installed in the partition wall. The utility model innovatively adds a heat recovery device on the basis of the traditional solar air heat collector to recover the waste heat and radiant heat of the flue gas generated by the daily life and heating of the farm house, and further considers the intelligent control of the switching process by measuring the air temperature. It realizes the problem of automatic control of heat recovery and heat utilization of farm houses, and realizes the improvement of indoor comfort of farm houses.

The technical scheme of the present utility model:

An intelligent sensing heat recovery solar heating roof system, comprising a kang surface radiant heat recovery device 3, a chimney flue gas heat recovery device 10, a radiant heating component 9, and a solar air collector system, which can be applied to a kang 2 system or a fire wall 11 in the system.

Described kang surface radiant heat recovery device 3 is hoisted on the ceiling of the house, and is located directly above kang 2 or fire wall 11; The recovery device air distribution pipe 16 , the air outlet 17 of the radiant heat recovery device on the kang surface, the radiation absorption plate 18 , the bolt holes a19 , the gas collecting pipe 20 of the radiant heat recovery device on the kang surface, and the glass cover plate 21 . The air distribution pipe 16 of the radiant heat recovery device on the kang surface is arranged in parallel with the air collecting pipe 20 of the radiant heat recovery device on the kang surface. Between the collecting pipes 20 of the surface radiation heat recovery device, the channel formed by the middle folding serves as a channel for hot air to flow. The upper surface of the gas distribution pipe 16 of the radiant heat recovery device on the kang surface and the gas collecting pipe 20 of the radiant heat recovery device on the kang surface are provided with a plurality of bolt holes a19, which are bolted through the bolt holes a19 and the bolt holes b23 to recover the radiant heat on the kang surface. The device 3 and the chimney flue gas heat recovery device 10 are connected together. The air inlet 15 of the radiant heat recovery device on the kang surface and the air outlet 17 of the radiant heat recovery device on the kang surface are divided into the ends of the air distribution pipe 16 of the radiant heat recovery device on the kang surface and the gas collecting pipe 20 of the radiant heat recovery device on the kang surface. The air inlet 15 of the surface radiant heat recovery device and the air outlet 17 of the kang surface radiant heat recovery device are arranged diagonally; the air outlet 17 of the kang surface radiant heat recovery device is connected with the air inlet 22 of the chimney flue gas heat recovery device, and the kang surface radiant heat recovery device The air inlet 15 is connected to the air outlet 33 of the radiant heating element. The glass cover plate 21 is installed between the air distribution pipe 16 of the radiant heat recovery device on the kang surface and the gas collecting pipe 20 of the radiant heat recovery device on the kang surface, and is located below the radiation absorption plate 18, so that a cavity is formed inside the radiant heat recovery device 3 on the kang surface. , for the heat transfer of hot air.

The chimney flue gas heat recovery device 10 is installed on the ceiling of the house, and is arranged in parallel with the radiant heat recovery device 3 on the surface of the kang. The hole b23, the baffle a24, the heat pipe circulating pump 25, the air outlet 26 of the chimney flue gas heat recovery device and the heat pipe 4. The air inlet 22 of the chimney flue gas heat recovery device and the air outlet 26 of the chimney flue gas heat recovery device are arranged at both ends of the same side of the outer frame structure; there are multiple baffles a24, which are symmetrically alternately welded and fixed to the outside In the frame structure, the internal structure of the outer frame structure is divided into S-shaped channels; a part of the heat pipes 4 is arranged along the S-shaped channel, and the other part is located outside the chimney flue gas heat recovery device 10, and is located in the stove chimney 5 or In the fire wall chimney 13 , the baffle a24 is used to create a turbulent flow to enhance the heat exchange between the air and the heat pipe 4 . The heat pipe circulating pump 25 is installed in the external frame structure, connected with the heat pipe 4, and is used for the flow of the antifreeze in the circulating heat pipe 4. The start and stop are controlled by a mechanical switch. The antifreeze in the heat pipe 4 is partially in the chimney. The spiral downward flow exchanges heat with the flue gas, and then enters the chimney flue gas heat recovery device 10 to exchange heat with the hot air from the radiant heat recovery device 3 on the kang surface. The outer frame structure is provided with a plurality of bolt holes b23, and the chimney flue gas heat recovery device 10 is fixed on the kang surface radiant heat recovery device 3 by bolting through the bolt holes a19 and the bolt holes b23.

The radiant heating component 9 is embedded inside the partition wall, and includes the radiant heating component frame structure, the axial flow fan 14, the baffle b32, the radiant heating component air outlet 33, the radiant heating component air inlet 34 and the automatic control air damper 36. A cavity is formed inside the frame structure of the radiant heating component, and a plurality of baffles b32 are symmetrically alternately welded and fixed in the frame structure of the radiant heating component, and the internal structure of the frame structure of the radiant heating component is divided into S-shaped channels. Strengthen the heat exchange of hot air in the radiant heating component 9; the radiant heating component air outlet 33 and the radiant heating component air inlet 34 are respectively arranged on the tops of both sides of the radiant heating component frame structure. The axial flow fan 14 is installed above the air inlet 34 of the radiant heating component, and is controlled by a mechanical switch to start and stop. The automatic control air damper 36 is installed on one side of the bottom of the radiant heating component frame structure, and is located on the same side as the air outlet 33 of the radiant heating component, and the automatic control air damper 36 communicates with the internal cavity of the radiant heating component frame structure.

The solar air collector system is located outdoors and installed at the eaves, including the solar air collector inlet 27, the solar air collector 6, the solar air collector outlet 28, the roof ridge air collector duct 29, Vertical split air duct 30 , automatic control three-way valve 8 , heat recovery device horizontal air duct 31 and air temperature sensor 35 . The solar air heat collectors 6 can be provided in multiples, all of which are installed on the eaves, and a cavity is formed inside for heating the air. It communicates with the air outlet 28 of the solar air heat collector, and the air inlet 27 of the solar air heat collector is used for inhaling outdoor air. The roof ridge air collecting duct 29 is installed on the roof ridge and communicates with the air outlet 28 of the solar air heat collector for collecting and summarizing the hot air from the air outlet 28 of the plurality of solar air heat collectors. The vertical distribution air duct 30 is arranged vertically, one end is communicated with the roof ridge air collecting air duct 29, and the other end is connected with the automatic control three-way valve 8, and the other two ends of the automatic control three-way valve 8 are respectively connected with the horizontal air flow of the heat recovery device. The pipe 31 communicates with the air inlet 34 of the radiant heating component, and the horizontal air duct 31 of the heat recovery device communicates with the air outlet 26 of the chimney flue gas heat recovery device. The heat collection plate inside the solar air heat collector 6 supplies power to the axial flow fan 14 and the control system, a cavity is formed inside the solar air heat collector 6 for heating the air, and the air temperature sensor 35 is installed on the heat collection plate. When the temperature detected by the air temperature sensor 35 is higher than the set maximum temperature threshold value, the three-way valve 8 is automatically controlled to conduct the vertical split air duct 30 and the horizontal air duct 31 of the heat recovery device, and the control chip opens the automatic control damper 36 , the outdoor air is heated in the solar air collector 6 and merged with the hot air in the chimney flue gas heat recovery device 10, and then sent to the radiant heating part 9 through the axial flow fan 14, and after the heating is completed, it passes through the radiant heating part. The air outlet 33 is exported to the outdoors; when the temperature detected by the air temperature sensor 35 is lower than the set temperature threshold minimum value, the automatic control three-way valve 8 conducts the horizontal air duct 31 of the heat recovery device and closes the vertical shunt air duct 30, And the control chip closes the automatic control air damper 36, and the hot air circulates in a closed loop in the radiant heat recovery device 3 on the kang surface, the radiant heating component 9, and the chimney flue gas heat recovery device 10.

The said kang surface radiant heat recovery device 3 and the chimney flue gas heat recovery device 10 are generally made of ordinary thin steel plates as a whole, and rock wool boards are used for heat preservation outside. The radiant heating element 9 is generally made of ordinary thin steel plate.

The radiation absorbing plate 18 adopts a high-absorbing black paint coating or a FeMuCuOx coating on the side facing the surface of the kang.

The antifreeze in the circulating heat pipe 4 is ethylene glycol.

The air inlet 27 of the solar air collector is provided with a filter device such as a dust-proof net and an insect-proof net at the contact portion with the outside.

The surface of the solar air heat collector 6 is a glass cover plate, surrounded by ordinary thin steel plates, and the heat collecting plate inside the solar air heat collector 6 is a black chrome aluminum alloy, which can also be replaced by a photovoltaic power generation plate.

The roof ridge air collecting duct 29 is composed of ordinary thin steel plates.

The top of the stove kang chimney 5 is provided with an air cap 37, and the air cap 37 is made of stainless steel. The natural wind speed of nature is used to push the turbine rotation of the fan and the principle of indoor and outdoor air convection, and the air flow in any parallel direction is accelerated and transformed into Vertical air flow from bottom to top to improve the driving force of flue gas flow in the chimney.

Beneficial effects of the utility model:

(1) The utility model effectively recycles the radiant heat on the kang surface and the heat of the exhaust gas in the chimney through the radiant heat recovery device on the surface of the kang and the chimney flue gas heat recovery device, which fully embodies the concept of passive building energy recovery and utilization. Reduce unnecessary energy consumption;

(2) The solar air collector effectively utilizes solar radiation energy, completes the conversion of working conditions through intelligent control of the damper and the three-way valve, and merges with the hot air of the heat recovery device, effectively stabilizing the effect of solar heating, and improving the Indoor heating effect;

(3) The utility model can be reconstructed according to the existing farm house, and has a wide range of applications. It only needs to do the main reconstruction for the roof. After the reconstruction is completed, the farm house can be heated effectively and stably, and additional power supply is not required. It will effectively improve the comfort and energy saving of the indoor environment of northern farmhouses.

Description of drawings

Fig. 1 is the system principle schematic diagram of the present invention;

Fig. 2 is the front structure diagram of the kang surface radiant heat recovery device of the utility model;

Fig. 3 is the bottom surface structure diagram of the kang surface radiant heat recovery device of the utility model;

4 is a structural diagram of a chimney flue gas heat recovery device of the present invention;

Fig. 5 is the solar air heat collector system structure diagram of the present utility model;

Fig. 6 is the radiant heating component structure diagram of the present invention;

FIG. 7 is a relative position diagram of each device of the present invention.

In the picture: 1 stove; 2 kang; 3 kang surface radiant heat recovery device; 4 heat pipe; 5 stove kang chimney; 6 solar air collector; 7 air duct; 8 automatic control three-way valve; 9 radiant heating components; 10 Chimney flue gas heat recovery device; 11 fire wall; 12 coal boiler; 13 fire wall chimney; 14 axial flow fan; 15 air inlet of kang surface radiant heat recovery device; 16 kang surface radiant heat recovery device Air outlet; 18 Radiation absorbing plate; 19 Bolt hole a; 20 Kang surface radiant heat recovery device gas collector; 21 Glass cover plate; 22 Chimney flue gas heat recovery device air inlet; 23 Bolt hole b; 24 Baffle a; 25 Heat pipe circulating pump; 26 air outlet of chimney flue gas heat recovery device; 27 air inlet of solar air collector; 28 air outlet of solar air collector; 29 roof ridge air collecting air duct; 30 vertical split air duct; 31 horizontal heat recovery device Air duct; 32 baffle b; 33 air outlet of radiant heating part; 34 air inlet of radiant heating part; 35 air temperature sensor; 36 automatic control air damper; 37 air cap.

Detailed ways

The specific embodiments of the present utility model are further described below with reference to the accompanying drawings and technical solutions.

In winter, the stove and kang system of typical farm houses in Northeast China or the hot water heating system of coal boilers provide a large amount of heat for heating, but at the same time, there is also a large amount of heat loss. In addition, the typical farm houses in Northeast China lack the utilization of renewable energy such as solar energy, which leads to the situation of large energy input and large losses in farm houses. The utility model reduces the energy loss of the farm house and increases the energy utilization of the farm house by adding a heat recovery device and a solar air heat collector system, and enables the farm house to rely on self-generated energy and renewable energy to meet the heating requirements in winter by means of passive regulation. demand, no additional energy is required, and the investment in heating costs is reduced.

As shown in FIG. 1 , stoves 1 are commonly used in traditional farmhouses in Northeast China for cooking and energy use. The flue gas generated by stove 1 enters kang 2 through the flue to heat the upper surface and sides of kang 2 to meet indoor heating needs. The temperature of the upper surface of the kang 2 is relatively high, and most of the radiant heat is dissipated through the roof, so the utility model recovers this part of the heat through the radiant heat recovery device 3 on the kang surface. The flue gas heats the kang 2 and flows to the chimney 5, where the heat pipe 4 of the chimney flue gas heat recovery device 10 is inserted into the chimney 5 to absorb the heat of the flue gas, and the absorbed heat is introduced into the chimney flue gas heat recovery device 10. In traditional farm houses in Northeast China, there are also common coal boilers 12 combined with radiators for hot water heating. The flue gas generated by the coal boilers 12 can be introduced into the fire wall 11 for further use, and then enters the fire wall chimney 13 to transfer heat through the heat pipe 4 to the heat recovery device. At night or under cloudy conditions, the air temperature in the solar air heat collector 6 does not meet the heating requirements, at this time, the automatic control three-way valve 8 only opens the horizontal air duct 31 of the heat recovery device close to the chimney flue gas heat recovery device 10 , the hot air is only in closed circulation in the radiant heat recovery device 3 on the kang surface, the radiant heating component 9, and the chimney flue gas heat recovery device 10. Under sunny conditions during the day, the solar air collector 6 receives solar radiation to heat the air in its cavity, and when the air temperature meets the heating requirements, it passes through the air duct 7, and at this time, the three-way valve 8 is automatically controlled to open all air ducts , the hot air of the chimney flue gas heat recovery device 10 and the hot air of the solar air heat collector 6 are combined and sent to the radiant heating component 9. At this time, it is an open cycle. In order to ensure pressure balance, the heated air passes through the radiant heating component. 9. The automatic control air damper 36 inside is sent to the outside.

As shown in FIGS. 2 and 3 , the radiant heat recovery device 3 on the surface of the kang includes the air inlet 15 of the radiant heat recovery device on the surface of the kang, the air duct 16 of the radiant heat recovery device on the surface of the kang, the air outlet 17 of the radiant heat recovery device on the surface of the kang, and the radiation absorbing plate. 18. Bolt hole a19, gas collecting pipe 20 and glass cover plate 21 of the radiant heat recovery device on the kang surface. The radiation absorbing plate 18 is folded in a zigzag shape and welded between the air distribution pipe 16 of the kang surface radiant heat recovery device and the air collecting pipe 20 of the kang surface radiant heat recovery device, and the channel formed by the middle folding is the channel for hot air to flow. The kang surface radiant heat recovery device 3 is installed on the suspended ceiling through the bolt holes a19. The air outlet 17 of the radiant heat recovery device on the kang surface is connected to the air inlet 22 of the chimney flue gas heat recovery device, and the air inlet 15 of the radiant heat recovery device on the kang surface is connected to the air outlet 33 of the radiant heating component.

As shown in FIG. 4 , the chimney flue gas heat recovery device 10 includes the chimney flue gas heat recovery device air inlet 22 , the bolt hole b23 , the baffle a24 , the heat pipe circulating pump 25 , the chimney flue gas heat recovery device air outlet 26 and the heat pipe 4 . The chimney flue gas heat recovery device 10 is fixedly installed on the suspended ceiling through the bolt holes b23. The baffle a24 is used to manufacture turbulent flow to enhance the heat exchange between the air and the heat pipe 4, and is connected inside the chimney flue gas heat recovery device 10 by welding. The heat pipe circulating pump 25 is installed and fixed inside the chimney flue gas heat recovery device 10, and is controlled by a mechanical switch to start and stop. The heat pipe circulating pump 25 is used to circulate the flow of the antifreeze in the heat pipe 4, and the antifreeze in the heat pipe 4 is in the chimney. Part of the spiral flows downward to exchange heat with the flue gas, and then enters the chimney flue gas heat recovery device 10 to exchange heat with the hot air from the radiant heat recovery device 3 on the kang surface.

As shown in Figure 5, the solar air collector system is installed at the eaves, including the solar air collector inlet 27, the solar air collector 6, the solar air collector outlet 28, the roof ridge air collector duct 29, Vertical split air duct 30 , automatic control three-way valve 8 , air temperature sensor 35 . Both ends of the solar air collector 6 are provided with a solar air collector inlet 27 and a solar air collector outlet 28, and the roof ridge air collector duct 29 is hoisted on the roof to collect and aggregate a plurality of solar air collectors. hot air from the outlet 28 of the device. The vertical distribution air duct 30 is connected to the roof ridge air collecting air duct 29 by welding. The heat collection plate inside the solar air heat collector 6 supplies power to the axial flow fan 14 and the control system, a cavity is formed inside the solar air heat collector 6 for heating the air, and the air temperature sensor 35 is installed on the heat collection plate. When the temperature detected by the air temperature sensor 35 is higher than the maximum temperature threshold value, the three-way valve 8 is automatically controlled to conduct the vertical split air duct 30 and the horizontal air duct 31 of the heat recovery device, and the control chip opens the automatic control damper 36. At this time, the outdoor After the air is heated in the solar air heat collector 6 and merged with the hot air in the chimney flue gas heat recovery device 10, the air is sent to the radiant heating unit 9 through the axial flow fan 14, and is exported to the outdoors after the heating is completed. Considering the cost, the control chip can be a chip with a certain logic judgment ability, such as a single-chip microcomputer. When the temperature detected by the air temperature sensor 35 is lower than the minimum temperature threshold value, the three-way valve 8 is automatically controlled to conduct the horizontal air duct 31 of the heat recovery device and close the vertical branch air duct 30, and the control chip closes the automatic control air damper 36. The hot air is circulated in a closed circuit in the radiant heat recovery device 3 on the kang surface, the radiant heating component 9, and the chimney flue gas heat recovery device 10.

As shown in FIG. 6 , the radiant heating element 9 includes an axial flow fan 14 , a baffle b32 , an air outlet 33 of the radiant heating element, an air inlet 34 of the radiant heating element, and an automatically controlled damper 36 . The radiant heating element 9 is embedded inside the partition wall, and the installation height is a certain distance from the ground. The axial flow fan 14 is installed above the air inlet 34 of the radiant heating component, and is controlled by a mechanical switch to start and stop. The baffle b32 is connected inside the radiant heating part 9 by welding, so as to enhance the heat exchange of the hot air in the radiant heating part 9 . The automatic control air damper 36 is controlled by the control chip to open and close.

As shown in Figure 7, the hot air flow process of the intelligent sensing heat recovery solar heating system of the present invention is as follows:

When it is cloudy or at night when the solar radiation is insufficient, the three-way valve 8 is automatically controlled to close the passage of the vertical shunt air duct 30, and only the passage of the horizontal air duct 31 of the heat recovery device is conducted, and at the same time, the air damper 36 is automatically controlled to close, so that the heat Air can only perform closed circulation between the radiant heat recovery device 3 on the kang surface, the chimney flue gas heat recovery device 10 and the radiant heating component 9 . The temperature of the hot air inside the radiant heating part 9 decreases after heating the radiant surface of the radiant heating part 9, and enters the air inlet 15 of the radiant heat recovery device on the kang surface from the air outlet 33 of the radiant heating part, and passes through the air distribution pipe 16 of the radiant heat recovery device on the kang surface. After the air is separated, it passes through the high temperature radiation absorbing plate 18 and then heats up, and then collects the hot air through the air collecting pipe 20 of the radiant heat recovery device on the kang surface, and passes through the interconnected air outlet 17 of the radiant heat recovery device on the kang surface and the chimney flue gas heat recovery device. The air inlet 22 is sent into the chimney flue gas heat recovery device 10 . In the chimney flue gas heat recovery device 10, the hot air is further heated up after being heated by the heat pipe 4, and passes through the interconnected chimney flue gas heat recovery device air outlet 26 and the heat recovery device horizontal air duct 31, through the conducting automatic control three The through valve 8 and the axial flow fan 14 provide driving force into the air inlet 34 of the radiant heating element. So far, the hot air has completed the closed cycle between the radiant heat recovery device 3 on the kang surface, the chimney flue gas heat recovery device 10 and the radiant heating component 9 .

On a sunny day with sufficient solar radiation, the three-way valve 8 is automatically controlled to open the passage of the vertical split air duct 30 and the passage of the horizontal air duct 31 of the heat recovery device, and at the same time, the air damper 36 is automatically controlled to open, so that the hot air radiates heat on the kang surface. Open circulation is performed between the recovery device 3 , the chimney flue gas heat recovery device 10 , the solar air collector 6 and the radiant heating element 9 . On sunny days, the hot air circulates between the radiant heat recovery device 3 on the kang surface, the chimney flue gas heat recovery device 10 and the radiant heating element 9, as in cloudy days, increasing the air introduced and heated from outside. The air inlet 27 of the solar air collector sucks in outdoor air, and the temperature rises through the solar air collector 6. The heated air passes through the solar air collector air outlet 28, the roof ridge air collecting air duct 29 and the vertical shunt air duct 30, The driving force is provided through the conducting automatic control three-way valve 8 and the axial flow fan 14 into the air inlet 34 of the radiant heating component. At the same time, in order to maintain the balance of the hot air in the radiant heating element, the excess hot air is discharged through the automatically controlled damper 36 . So far, the hot air has completed the open circulation between the kang surface radiant heat recovery device 3 , the chimney flue gas heat recovery device 10 , the solar air heat collector 6 and the radiant heating component 9 . The kang surface radiant heat recovery device 3 and the chimney flue gas heat recovery device 10 can not only recover the radiant heat of the kang 2 and the flue gas heat of the kang chimney 5, but also the radiant heat of the fire wall 11 and the flue gas of the fire wall chimney 13. The heat is recovered, and the working principle is roughly the same.

A plurality of solar air heat collectors 6 can be installed side by side on the roof, the hot air is collected through the roof ridge air collecting air duct 29 and the hot air is distributed through the vertical distribution air duct 30 .

The intelligent sensing heat recovery solar heating system proposed by the utility model can be divided into a cloudy day mode and a sunny day mode, and the specific operation mode technical scheme is as follows:

(1) Cloudy mode

The air temperature sensor 35 located in the solar air collector 6 determines that when the air temperature in the collector is lower than 40°C (different temperature thresholds in different regions), the cloudy day mode is activated through the control chip. In cloudy day mode, the three-way valve 8 is automatically controlled to conduct the horizontal air duct 31 of the heat recovery device to close the vertical branch air duct 30 , and the control chip opens and closes the control air damper 41 . The hot air is only circulated in the kang surface radiant heat recovery device 3, the radiant heating component 9, and the chimney flue gas heat recovery device 10 to complete the two heat recovery of the kang radiant heat recovery and the chimney flue gas heat recovery.

In the radiant heat recovery of the kang, when the stove 1 is used for cooking, high-temperature flue gas will be generated, and the high-temperature flue gas will enter the heated kang 2 through the flue to heat the upper surface and sides of the heated kang 2 to meet the indoor heating demand. The temperature of the upper surface of the kang 2 is relatively high, and most of the radiant heat is radiated to the roof through the roof. The radiant heat recovery device 3 on the kang surface is located directly above the kang 2, and a large amount of radiant heat passes through the glass cover 21 on the bottom surface of the radiant heat recovery device 3 on the kang surface. , absorbed by the radiation absorbing plate 18 therein, so that the temperature of the radiation absorbing plate 18 increases, and the radiation absorbing plate 18 adopts a folding design, which is used to divide the air from the radiant heating part 9 for heating, and the heated air after heating is completed. After passing through the gas collecting pipe 20 of the radiant heat recovery device on the kang surface, it is fed into the air inlet 22 of the chimney flue gas heat recovery device for the next step of chimney flue gas heat recovery.

In the heat recovery of chimney flue gas, the high-temperature flue gas in the kang 2 will enter the chimney 5 of the stove kang, and the heat pipe 4 of the chimney flue gas heat recovery device 10 exists in the chimney 5. The heat pipe 4 is filled with antifreeze and passes through the heat pipe. The circulating pump 25 circulates, and the antifreeze liquid in the heat pipe 4 flows downwards in the chimney to exchange heat with the flue gas. After gaining heat, it enters the chimney flue gas heat recovery device 10 and the hot air from the radiant heat recovery device 3 on the kang surface. heat exchange. The hot air from the radiant heat recovery device 3 on the surface of the kang will pass through the baffle plate a24 to form a turbulent flow, thereby enhancing the heat exchange with the heat pipe 4. After the heat exchange is completed, it will pass through the air outlet 26 of the chimney flue gas heat recovery device, and the horizontal air duct of the heat recovery device. 31 and the automatically controlled three-way valve 8 into the radiant heating element 9 .

In the radiant heating component 9, the hot air passes through the baffle b32 to form turbulent flow to enhance heat exchange and increase the temperature of the wall surface in contact with the room, thereby completing the process of the radiant heating component 9 completing radiant heating to the room.

(2) Sunny mode

The air temperature sensor 35 located in the solar air collector 6 determines that when the air temperature in the collector is higher than 40°C (different temperature thresholds in different regions), the sunny mode is activated by the control chip. In the sunny day mode, the automatic control three-way valve 8 conducts the vertical split air duct 30 and the heat recovery device horizontal air duct 31 , and the control chip opens the automatic control air damper 36 . At this time, after the outdoor air is heated in the solar air heat collector 6 and the hot air in the chimney flue gas heat recovery device 10 is combined, it is sent to the radiant heating part 9 through the axial flow fan 14, and is exported to the outside after the heating is completed. . Completion of kang radiant heat recovery and chimney flue gas heat recovery two heat recovery and solar air heat collection one heat utilization.

Kang radiant heat recovery and chimney flue gas heat recovery The working conditions of both heat recovery and cloudy mode are the same.

In the solar air heat collection and heat utilization, driven by the axial flow fan 14, the air inlet 27 of the solar air heat collector forms a negative pressure, sucks outdoor air, and enters the cavity of the solar air heat collector 6, and in the cavity The heat collector plate or photovoltaic power generation plate absorbs the solar radiation and the temperature rises, thereby heating the air in the cavity. The through valve 8 merges with the hot air from the horizontal air duct 31 of the heat recovery device, and is sent to the radiant heating unit 9 together.

In the radiant heating part 9, the hot air forms a turbulent flow through the baffle b32 to enhance heat exchange, increase the temperature of the wall surface in contact with the room, and in order to maintain the air pressure balance in the radiant heating part 9, the excess air is automatically controlled by the damper 36 to flow out the excess air to the outside.

The utility model proposes the following solutions for the problem of passive heat recovery solar energy heating in northern farm houses in winter:

(1) The radiant heat recovery device on the surface of the kang has been developed, which can effectively recover the radiant heat on the surface of the high-temperature kang and reduce the loss of energy;

(2) The chimney flue gas heat recovery device has been developed, which can effectively recover the heat of the waste flue gas in the chimney and improve the utilization rate of energy;

(3) Comprehensive utilization of solar radiation energy through the solar air collector system, combined with the radiant heat recovery of the kang surface and the heat recovery of the chimney flue gas, the working conditions are automatically adjusted, and the collection, storage and transmission of energy are optimized;

(4) The radiant heating component is developed, which can effectively send the heat collected by the intelligent sensing heat recovery solar heating roof system to the room through radiant heating, which improves the heating effect.

Claims (8)

1. An intelligent perception heat recovery solar heating roof system, characterized in that, the intelligent perception heat recovery solar heating roof system comprises a kang surface radiant heat recovery device (3), a chimney flue gas heat recovery device (10), a radiation The heating component (9) and the solar air collector system can be applied to the heated kang (2) system or the fire wall (11) system; The said kang surface radiant heat recovery device (3) is hoisted on the ceiling of the house, and is located directly above the heated kang (2) or the fire wall (11); the said kang surface radiant heat recovery device (3) comprises a kang surface radiant heat recovery device Air inlet (15), air duct (16) of the radiant heat recovery device on the kang surface, air outlet (17) of the radiant heat recovery device on the kang surface, radiation absorption plate (18), bolt holes a (19), and radiant heat recovery device on the kang surface The gas collecting pipe (20) and the glass cover plate (21); the gas distribution pipe (16) of the radiant heat recovery device on the kang surface and the gas collecting pipe (20) of the radiant heat recovery device on the kang surface are arranged in parallel, and the radiation absorbing plate (18) ) is zigzag folded and welded between the air distribution pipe (16) of the radiant heat recovery device on the kang surface and the gas collecting pipe (20) of the radiant heat recovery device on the kang surface, and the channel formed by the middle folding is used as a channel for hot air to flow; The upper surfaces of the air distribution pipe (16) of the surface radiant heat recovery device and the air collecting pipe (20) of the surface radiant heat recovery device are provided with a plurality of bolt holes a (19), which pass through the bolt holes a (19) and the bolt holes b (23) Bolt connection is performed to connect the kang surface radiant heat recovery device (3) and the chimney flue gas heat recovery device (10); the kang surface radiant heat recovery device air inlet (15) and the kang surface radiant heat recovery device air outlet (17) Divided into the end of the air distribution pipe (16) of the radiant heat recovery device on the kang surface and the gas collecting pipe (20) of the radiant heat recovery device on the kang surface, and the air inlet (15) of the radiant heat recovery device on the kang surface and the radiant heat on the kang surface The air outlet (17) of the recovery device is arranged diagonally; the air outlet (17) of the radiant heat recovery device on the kang surface is connected with the air inlet (22) of the chimney flue gas heat recovery device, and the air inlet (15) of the radiant heat recovery device on the kang surface is connected to the air inlet (22) of the chimney flue gas heat recovery device. The air outlet (33) of the heating component is connected; the glass cover plate (21) is installed between the gas distribution pipe (16) of the radiant heat recovery device on the kang surface and the gas collecting pipe (20) of the radiant heat recovery device on the kang surface, and is located on the radiation absorbing plate (18) Below, a cavity is formed inside the kang surface radiation heat recovery device (3) for heat transfer of hot air; The chimney flue gas heat recovery device (10) is installed on the ceiling of the house, and is arranged in parallel with the radiant heat recovery device (3) on the kang surface, and the chimney flue gas heat recovery device (10) includes an external frame structure, a chimney flue gas heat recovery device The device air inlet (22), the bolt hole b (23), the baffle plate a (24), the heat pipe circulating pump (25), the chimney flue gas heat recovery device air outlet (26) and the heat pipe (4); the chimney The air inlet (22) of the flue gas heat recovery device and the air outlet (26) of the chimney flue gas heat recovery device are arranged at both ends of the same side of the outer frame structure; there are multiple baffles a (24), which are symmetrically alternately welded It is fixed in the outer frame structure, and the inner structure of the outer frame structure is divided into S-shaped channels; a part of the heat pipe (4) is arranged along the S-shaped channel, and the other part is located outside the chimney flue gas heat recovery device (10), and is located in the stove kang chimney (5) or the fire wall chimney (13), and the baffle a (24) is used to manufacture turbulent flow to enhance the heat exchange between the air and the heat pipe (4); the heat pipe circulation pump (25) is installed outside In the frame structure, it is connected with the heat pipe (4), and is used for the flow of the antifreeze in the circulating heat pipe (4), and the start and stop are controlled by a mechanical switch, and the antifreeze in the heat pipe (4) partially spirals downward in the chimney. Exchange heat with the flue gas, and then enter the chimney flue gas heat recovery device (10) to exchange heat with the hot air from the radiant heat recovery device (3) on the kang surface; the external frame structure is provided with a plurality of bolt holes b (23) , the chimney flue gas heat recovery device (10) is fixed on the kang surface radiant heat recovery device (3) by bolting through the bolt hole a (19) and the bolt hole b (23); The radiant heating component (9) is embedded inside the partition wall, and includes a frame structure of the radiant heating component, an axial flow fan (14), a baffle b(32), an air outlet (33) of the radiant heating component, and an inlet of the radiant heating component. The tuyere (34) and the automatic control air damper (36); a cavity is formed inside the frame structure of the radiant heating component, and a plurality of baffles b (32) are symmetrically alternately welded and fixed in the frame structure of the radiant heating component, and the radiant heating component is The internal structure of the component frame structure is divided into S-shaped channels, and the baffle b (32) strengthens the heat exchange of hot air in the radiant heating component (9); the air outlet (33) of the radiant heating component and the inlet of the radiant heating component. The air vents (34) are respectively arranged on the tops of both sides of the frame structure of the radiant heating component; the axial flow fan (14) is installed above the air inlet (34) of the radiant heating component, and is controlled by a mechanical switch to start and stop; the automatic The control air damper (36) is installed on one side of the bottom of the radiant heating component frame structure, and is located on the same side as the radiant heating component air outlet (33), and the automatic control air damper (36) is communicated with the internal cavity of the radiant heating component frame structure; The solar air heat collector system is located outdoors and installed at the eaves, and includes a solar air heat collector air inlet (27), a solar air heat collector (6), a solar air heat collector air outlet (28), a roof ridge Air collecting air duct (29), vertical shunt air duct (30), automatic control three-way valve (8), horizontal air duct (31) of heat recovery device and air temperature sensor (35); the solar air heat collector (6) There can be multiple installations, all of which are installed on the eaves, and a cavity is formed inside for heating the air. The two sides of each solar air collector (6) are respectively connected with the solar air collector air inlet (27) and the solar energy. The air outlet (28) of the air collector is in communication, and the air inlet (27) of the solar air collector is used for inhaling outdoor air; the roof ridge air collecting air duct (29) is installed on the roof ridge and is connected to the solar air collector outlet. The tuyere (28) communicates with each other and is used for collecting and summarizing the hot air from the air outlets (28) of the multiple solar air collectors; the vertical distribution air duct (30) is arranged vertically, and one end is connected to the roof ridge air collecting air duct (29). ) is connected, the other end is connected with an automatic control three-way valve (8), and the other two ends of the automatic control three-way valve (8) are respectively connected with the horizontal air duct (31) of the heat recovery device and the air inlet (34) of the radiant heating component, The horizontal air duct (31) of the heat recovery device is communicated with the air outlet (26) of the chimney flue gas heat recovery device; the inner heat collecting plate of the solar air heat collector (6) supplies power to the axial flow fan (14) and the control system, A cavity is formed inside the solar air heat collector (6) for heating air, and an air temperature sensor (35) is installed on the heat collecting plate. When the temperature detected by the air temperature sensor (35) is higher than a set maximum temperature threshold value At this time, the three-way valve (8) is automatically controlled to conduct the vertical shunt air duct (30) and the horizontal air duct (31) of the heat recovery device, and the control chip opens the automatic control air damper (36), and the outdoor air flows in the solar air collector. After heating in (6), it is combined with the hot air in the chimney flue gas heat recovery device (10), and then sent into the radiant heating part (9) through the axial flow fan (14), and after the heating is completed, it exits through the radiant heating part. The tuyere (33) is led out to the outside; when the temperature detected by the air temperature sensor (35) is lower than the set minimum temperature threshold value, the three-way valve (8) is automatically controlled to conduct the horizontal air duct (31) of the heat recovery device and The vertical shunt air duct (30) is closed, and the control chip closes the automatic control air damper (36), and the hot air radiates heat recovery device (3), radiant heating component (9), chimney flue gas heat recovery device (10) on the kang surface in a closed loop. 2. A kind of intelligent sensing heat recovery solar heating roof system according to claim 1, characterized in that, described kang surface radiation heat recovery device (3) and chimney flue gas heat recovery device (10) are made of steel plate as a whole, The outside adopts rock wool board for heat preservation; the radiant heating component (9) is made of steel plate as a whole; the surface of the solar air heat collector (6) is a glass cover plate, surrounded by steel plates, and the solar air collector (6) is surrounded by steel plates. The inner heat collecting plate of the heater (6) is a black chrome aluminum alloy or a photovoltaic power generation plate; the roof ridge air collecting duct (29) is composed of steel plates. 3. A kind of intelligent sensing heat recovery solar heating roof system according to claim 1 or 2, characterized in that, the radiation absorbing plate (18) adopts black paint coating or FeMuCuOx coating on the side facing the kang surface layer; the antifreeze in the circulating heat pipe (4) is ethylene glycol. 4. A kind of intelligent sensing heat recovery solar heating roof system according to claim 1 or 2, characterized in that, the air inlet (27) of the solar air collector is provided with a dust-proof net at the contact part with the outdoor Insect net filter equipment. 5. An intelligent sensing heat recovery solar heating roof system according to claim 3, characterized in that, the air inlet (27) of the solar air collector is provided with a dust-proof net and an insect-proof net at the contact part with the outside. filter equipment. 6. A kind of intelligent perception heat recovery solar heating roof system according to claim 1 or 2 or 5, characterized in that, the top of the stove kang chimney (5) is provided with a hood (37), and the hood (37) Made of stainless steel. 7 . The intelligent sensing heat recovery solar heating roof system according to claim 3 , wherein the top of the stove kang chimney ( 5 ) is provided with an air cap ( 37 ), and the air cap ( 37 ) is made of stainless steel. 8 . 8 . The intelligent sensing heat recovery solar heating roof system according to claim 4 , wherein the top of the stove kang chimney ( 5 ) is provided with an air cap ( 37 ), and the air cap ( 37 ) is made of stainless steel. 9 .

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