CN214223326U - Indoor ventilation heat recovery device with heat stored by porous material - Google Patents
Indoor ventilation heat recovery device with heat stored by porous material Download PDFInfo
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- CN214223326U CN214223326U CN202021941922.XU CN202021941922U CN214223326U CN 214223326 U CN214223326 U CN 214223326U CN 202021941922 U CN202021941922 U CN 202021941922U CN 214223326 U CN214223326 U CN 214223326U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention provides an indoor ventilation heat recovery device for heat storage of porous materials, which consists of an exhaust air inlet, an exhaust air inlet valve, a heat insulation layer, a heat storage tank, a porous material heat storage body, a fresh air inlet valve, a fresh air inlet, an exhaust air outlet valve, a fresh air outlet valve and a fresh air outlet, wherein the heat insulation layer is tightly attached to the outer wall of the heat storage tank, the porous material heat storage body is arranged in the heat storage tank, the fresh air inlet and the exhaust air outlet are both arranged on the outer side of one end of the heat storage tank, the fresh air outlet and the exhaust air inlet are both arranged on the outer side of the other end of the heat storage tank, the uniform ends of pipelines where the fresh air inlet and the exhaust air outlet are arranged are communicated with the heat storage tank, the other ends are communicated with the outside of the heat storage tank, and the fresh air outlet and the exhaust air inlet are both communicated with the heat storage tank and the other end of the heat storage tank are communicated with the inside of the room, the whole, the device has a simple structure, and can realize the direct and the continuous heat exchange between the exhaust air and the porous material heat storage body, and the fresh air and the porous material heat storage body only by the switching of the valves, the energy utilization efficiency is improved.
Description
Technical Field
The invention relates to a heat storage device, in particular to an indoor ventilation heat recovery device utilizing porous materials for heat storage.
Background
A large amount of pollutants including inhalable particles, microorganisms, formaldehyde and other toxic gases are generated in a building every day, so that fresh air is guaranteed to meet the respiratory metabolism requirements of indoor personnel. The traditional window opening ventilation method is simple, but can be influenced by weather, in addition, the window opening frequency is low and cannot reach the qualified air quality, the window opening frequency is high, the indoor temperature can be obviously changed, and the refrigeration or heating energy consumption is increased. In recent years, the market application of fresh air conditioning units is increased, the fresh air conditioning units can effectively purify air, indoor dirty air is discharged to the outside, and meanwhile outdoor fresh air is introduced into the room after being filtered, subjected to heat and humidity regulation, so that the quality and the comfort level of the indoor air are improved. However, if the ventilation heat recovery technology is not adopted, a large amount of energy is still consumed in the fresh air heat and humidity regulation processing link. The ventilation heat recovery device is used for realizing heat-moisture exchange between fresh air and exhaust air, and recovering heat from the exhaust air to heat the fresh air, so that the temperature regulation load of the fresh air entering the room is reduced, and the purpose of energy conservation is achieved. The heat recovery device may be classified into a plate-fin type, a rotary type, a heat pipe type, an indirect evaporation type, and the like according to the structure. However, the plate-fin type heat exchanger has technical bottlenecks, and the plate-fin type heat exchanger can only exchange heat through a heat transfer wall surface, so that condensed water is generated and frosting is generated. The rotating wheel type has the defects of large volume, a driving device, energy consumption and noise. The heat pipe type and indirect evaporation type recovery efficiency is low.
Chinese patent 201210209323.2 proposes an air conditioner with heat recovery function, which adopts the heat absorber of airing exhaust to exchange heat with high-temperature waste gas, and adopts the heat absorber of draining water to exchange heat with high-temperature waste water, and water or refrigerant is filled in the heat absorber of airing exhaust and the heat absorber of draining water, and the heat energy discharged indoors is collected into the water receiver through the circulation of a circulating water pump or a refrigerating system, and the energy utilization efficiency is improved through indirect heat exchange. Essentially belongs to an indirect heat recovery device, and the recovery efficiency is not high. Chinese patent 201510826610.1 proposes a heat pump total heat recovery fresh air conditioning unit with condensation reheating, improves traditional heat pump type heat recovery device, and through the comdenstion water that retrieves the evaporimeter and produce, reduces the condensation temperature in summer, improves unit efficiency, and winter is to the fresh air humidification, improves indoor comfort level. The device is provided with components such as an air supply heat exchanger, an air exhaust heat exchanger, a reheater, a humidifier, a water pump and the like, belongs to indirect heat exchange, and is complex in system and high in cost.
The invention is an improvement of the traditional heat recovery device, and heat is stored by porous materials, and the air exhaust is utilized to heat one group of porous materials by switching of a valve, and meanwhile, the other group of porous materials heats fresh air. The system can work continuously, and does not need to be additionally provided with a fan and a water pump, so that the stable control of the indoor air quality and the temperature and humidity can be ensured under various indoor and outdoor environmental conditions.
Disclosure of Invention
The invention aims to overcome the defects of low heat efficiency caused by indirect heat exchange, high cost caused by complex equipment, or increased energy consumption and noise caused by additionally adding a water pump and a fan in the prior art, and provides an indoor ventilation heat recovery device with heat stored by a porous material. The heat storage device has a simple structure, can realize direct and continuous heat exchange between exhaust air and the porous material heat storage body and between fresh air and the porous material heat storage body only by switching of the valve, and is beneficial to improving the energy utilization efficiency.
The technical scheme of the invention is as follows:
the invention relates to an indoor ventilation heat recovery device with heat stored by porous materials, which consists of a fresh air inlet, a fresh air inlet valve, a heat insulation layer, a heat storage tank, a porous material heat storage body, a fresh air outlet valve, a fresh air outlet, an exhaust air inlet valve, an exhaust air inlet, an exhaust air outlet valve and an exhaust air outlet.
Preferably, the heat-insulating layer is tightly attached to the outer wall of the heat storage tank so as to reduce heat exchange between the heat storage tank and the outside.
Preferably, the porous material heat storage body is placed inside the heat storage tank. When the heat is charged, the heat storage body made of porous materials absorbs heat carried by exhaust air flowing through. When heat is released, the porous material heat storage body heats fresh air flowing through. Gaps are reserved between the left end and the right end of the porous material heat storage body and the two ends of the heat storage tank, and the gaps are used for improving air distribution. The porous material heat storage body and the corresponding heat storage tank can be cylinders, or spheres, platforms or polyhedrons. The porous material heat storage body can be of a foam structure, a honeycomb structure or a mixture structure of foam and honeycomb. The porous material heat storage body can be made of metal materials or non-metal materials. The cross section of the porous material heat storage body is uniform or scaled along the axial direction. The porous material heat storage body is continuous or discontinuous along the axial direction.
Preferably, the fresh air inlet and the fresh air inlet valve are arranged on the outer side of one end of the heat storage tank, and one end of a pipeline where the fresh air inlet is located is communicated with the interior of the heat storage tank. The other end of the pipeline where the fresh air inlet is positioned can be directly or indirectly communicated with the outside. The fresh air inlet valve is arranged on a pipeline between the fresh air inlet and the heat storage tank and used for adjusting the on-off of the pipeline where the fresh air inlet is located.
Preferably, the fresh air outlet and the fresh air outlet valve are arranged on the outer side of the other end of the heat storage tank, and one end of a pipeline where the fresh air outlet is located is communicated with the interior of the heat storage tank. The other end of the pipeline where the fresh air outlet is positioned can be directly or indirectly communicated with the room. The fresh air outlet valve is arranged on a pipeline between the fresh air outlet and the heat storage tank and used for adjusting the on-off of the pipeline where the fresh air outlet is located.
Preferably, the exhaust air inlet and the exhaust air inlet valve are arranged outside one end of the heat storage tank, and one end of the pipeline where the exhaust air inlet is located is communicated with the interior of the heat storage tank. The other end of the pipeline where the exhaust inlet is positioned can be directly or indirectly communicated with the indoor. The air exhaust inlet valve is arranged on the pipeline between the air exhaust inlet and the heat storage tank and used for adjusting the on-off of the pipeline where the air exhaust inlet is located.
Preferably, the exhaust air outlet and the exhaust air outlet valve are arranged on the outer side of the other end of the heat storage tank, and one end of the pipeline where the exhaust air outlet is located is communicated with the interior of the heat storage tank. The other end of the pipeline where the exhaust outlet is positioned can be directly or indirectly communicated with the outside. And the air exhaust outlet valve is arranged on a pipeline between the air outlet and the heat storage tank and used for adjusting the on-off of the pipeline where the air exhaust outlet is positioned.
The indoor ventilation heat recovery device with heat stored by the porous material is simple in structure, free of rotary motion equipment, capable of realizing direct and continuous heat exchange between exhaust air and the porous material heat storage body and between fresh air and the porous material heat storage body only by switching on and off of the valve, energy-saving, efficient and convenient to use.
Drawings
FIG. 1 is a front cross-sectional view of an indoor ventilation heat recovery device with porous material heat storage;
FIG. 2 is a left sectional view of a cylindrical structure of an indoor ventilation heat recovery device with heat stored by foam porous materials;
FIG. 3 is a left sectional view of a rectangular parallelepiped structure of an indoor ventilation heat recovery device with heat stored by foam porous materials;
FIG. 4 is a left sectional view of a cylindrical structure of an indoor ventilation heat recovery device with heat stored by honeycomb porous materials;
FIG. 5 is a left sectional view of a rectangular parallelepiped structure of an indoor ventilation heat recovery device with heat stored by honeycomb porous materials;
FIG. 6 is a schematic diagram of an application system formed by connecting porous material heat-storage indoor ventilation heat recovery devices in parallel;
in the figure: 1 air exhaust inlet, 2 air exhaust inlet valves, 3 heat preservation layers, 4 heat storage tanks, 5 porous material heat storage bodies, 6 fresh air inlet valves, 7 fresh air inlets, 8 air exhaust outlets, 9 air exhaust outlet valves, 10 fresh air outlet valves, 11 fresh air outlets, 12 fresh air inlets, 13 fresh air inlet valves, 14 air exhaust outlets, 15 air exhaust outlet valves, 16 heat preservation layers, 17 heat storage tanks, 18 porous material heat storage bodies, 19 fresh air outlet valves, 20 fresh air outlets, 21 air exhaust inlets and 22 air exhaust inlet valves.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the indoor ventilation heat recovery device with heat stored by porous materials is composed of an exhaust air inlet 1, an exhaust air inlet valve 2, a heat preservation layer 3, a heat storage tank 4, a porous material heat storage body 5, a fresh air inlet valve 6, a fresh air inlet 7, an exhaust air outlet 8, an exhaust air outlet valve 9, a fresh air outlet valve 10 and a fresh air outlet 11. The single porous material heat storage indoor ventilation heat recovery device can realize the function of alternately charging and discharging heat. When the indoor ventilation heat recovery device with heat stored by the porous material is used for heating, the exhaust inlet valve 2 and the exhaust outlet valve 9 are opened, and the fresh air inlet valve 6 and the fresh air outlet valve 10 are closed. Hot air from the indoor enters the heat storage tank 4 through the exhaust air inlet 1 and the exhaust air inlet valve 2, heat exchange is carried out between the hot air and the porous material heat storage body 5, the porous material heat storage body 5 is heated, and the air after heat exchange is exhausted through the exhaust air outlet valve 9 and the exhaust air outlet 8. When the indoor ventilation heat recovery device with heat stored by the porous material releases heat, the fresh air inlet valve 6 and the fresh air outlet valve 10 are opened, and the exhaust air inlet valve 2 and the exhaust air outlet valve 9 are closed. Cold air from the outdoor enters the heat storage tank 4 through the fresh air inlet 7 to exchange heat with the porous material heat storage body 5, and the heated fresh air directly or indirectly enters the indoor through the fresh air outlet valve 10 and the fresh air outlet 11.
The heat preservation layer 3 is tightly attached to the outer wall of the heat storage tank 4 so as to reduce heat exchange between the heat storage tank 4 and the outside.
The porous material heat storage body 5 is placed inside the heat storage tank 4. When the heat is charged, the heat storage body 5 made of porous materials absorbs heat carried by exhaust air flowing through. When heat is released, the porous material heat storage body 5 heats fresh air flowing through. Gaps are reserved between the left end and the right end of the porous material heat storage body 5 and the two ends of the heat storage tank 4, and the gaps are used for improving air distribution. The porous material heat storage body 5 and the corresponding heat storage tank 4 can be a column, a sphere or a table. The porous material heat storage body 5 can be of a foam structure, a honeycomb structure or a mixture structure of foam and honeycomb. The porous material heat storage body 5 may be a metal material or a non-metal material. The cross section of the porous material thermal storage body 5 is uniform or scaled in size along its axial direction. The porous material heat storage body 5 is continuous or intermittent along its axial direction.
The fresh air inlet 7 and the fresh air inlet valve 6 are arranged at the outer side of one end of the heat storage tank 4, and one end of a pipeline where the fresh air inlet 7 is located is communicated with the interior of the heat storage tank 4. The other end of the pipeline where the fresh air inlet 7 is positioned can be directly or indirectly communicated with the outside. The fresh air inlet valve 6 is arranged on a pipeline between the fresh air inlet 7 and the heat storage tank 4, and the fresh air inlet valve 6 is used for adjusting the on-off of the pipeline where the fresh air inlet 7 is located.
The fresh air outlet 11 and the fresh air outlet valve 10 are arranged at the outer side of the other end of the heat storage tank 4, and one end of a pipeline where the fresh air outlet 11 is located is communicated with the inside of the heat storage tank 4. The other end of the pipeline where the fresh air outlet 11 is positioned can be directly or indirectly communicated with the room. The fresh air outlet valve 10 is arranged on a pipeline between the fresh air outlet 11 and the heat storage tank 4, and the fresh air outlet valve 10 is used for adjusting the on-off state of the pipeline where the fresh air outlet 11 is located.
An exhaust air inlet 1 and an exhaust air inlet valve 2 are arranged on the outer side of one end of the heat storage tank 4, and one end of a pipeline where the exhaust air inlet 1 is located is communicated with the interior of the heat storage tank 4. The other end of the pipeline where the exhaust air inlet 1 is positioned can be directly or indirectly communicated with the indoor. The exhaust inlet valve 2 is arranged on a pipeline between the exhaust inlet and the heat storage tank 4, and the exhaust inlet valve 2 is used for adjusting the on-off of the pipeline where the exhaust inlet 1 is located.
An exhaust outlet 8 and an exhaust outlet valve 9 are arranged at the outer side of the other end of the heat storage tank 4, and one end of a pipeline where the exhaust outlet 8 is located is communicated with the interior of the heat storage tank 4. The other end of the pipeline where the exhaust outlet 8 is positioned can be directly or indirectly communicated with the outside. The air exhaust outlet valve 9 is arranged on a pipeline between the air exhaust outlet and the heat storage tank 4, and the air exhaust outlet valve 9 is used for adjusting the on-off of the pipeline where the air exhaust outlet 8 is located.
As shown in fig. 2, the cross-sectional shape of the cylindrical foam porous material heat-storage indoor ventilation heat recovery device is circular, and the heat-insulating layer 3 is tightly attached to the outer wall of the heat storage tank 4 to reduce heat exchange between the heat storage tank 4 and the outside. The porous material heat storage body 5 is placed inside the heat storage tank 4. The porous material heat storage body 5 is of a foam structure. The porous material heat storage body 5 may be a metal material or a non-metal material.
As shown in fig. 3, the cross-sectional shape of the indoor ventilation heat recovery device with heat storage of foam porous material in the shape of a cylinder is rectangular, and the heat insulation layer 3 is tightly attached to the outer wall of the heat storage tank 4 to reduce heat exchange between the heat storage tank 4 and the outside. The porous material heat storage body 5 is placed inside the heat storage tank 4. The porous material heat storage body 5 is of a foam structure. The porous material heat storage body 5 may be a metal material or a non-metal material.
As shown in fig. 4, the cross-sectional shape of the indoor ventilation heat recovery device with heat storage of a cylindrical honeycomb porous material is circular, and the heat insulation layer 3 is tightly attached to the outer wall of the heat storage tank 4 to reduce heat exchange between the heat storage tank 4 and the outside. The porous material heat storage body 5 is placed inside the heat storage tank 4. The porous material heat storage body 5 has a honeycomb structure. The porous material heat storage body 5 may be a metal material or a non-metal material.
As shown in fig. 5, the cross-sectional shape of the indoor ventilation heat recovery device with heat storage of honeycomb porous material in the shape of a cylinder is rectangular, and the heat insulation layer 3 is tightly attached to the outer wall of the heat storage tank 4 to reduce heat exchange between the heat storage tank 4 and the outside. The porous material heat storage body 5 is placed inside the heat storage tank 4. The porous material heat storage body 5 has a honeycomb structure. The porous material heat storage body 5 may be a metal material or a non-metal material.
As shown in fig. 6, the system application principle diagram is composed of 2 indoor ventilation heat recovery devices with heat stored by porous materials in parallel. Continuous heat and heat charging and discharging can be realized.
When the invention is used: the indoor ventilation heat recovery device of the porous material heat storage body is used for heat charging, and meanwhile, the specific operation process of heat release during the indoor ventilation heat recovery device of the porous material heat storage body is as follows: in the indoor ventilation heat recovery device of the porous material heat storage body 5, the exhaust inlet valve 2 and the exhaust outlet valve 9 are opened. The fresh air inlet valve 6 and the fresh air outlet valve 10 are closed. Hot air from the indoor enters the heat storage tank 4 through the exhaust air inlet 1 and the exhaust air inlet valve 2, heat exchange is carried out between the hot air and the porous material heat storage body 5, the porous material heat storage body 5 is heated, and low-temperature air after heat exchange is discharged through the exhaust air outlet valve 9 and the exhaust air outlet 8. Meanwhile, in the indoor ventilation heat recovery device B with heat stored by the porous material, the fresh air inlet valve 13 and the fresh air outlet valve 19 are opened, and the exhaust air inlet valve 22 and the exhaust air outlet valve 15 are closed. Cold air from the outdoor enters the heat storage tank 17 through the fresh air inlet 12 to exchange heat with the porous material heat storage body 18, the heated fresh air directly or indirectly enters the indoor through the fresh air outlet valve 19 and the fresh air outlet 20, and the indoor space can be a space internal structure in a workshop, a room and the like.
Claims (7)
1. An indoor ventilation heat recovery device with heat stored by porous materials comprises a heat recovery device arranged indoors, and is characterized in that: the heat recovery device comprises an exhaust inlet (1), an exhaust inlet valve (2), a heat preservation layer (3), a heat storage tank (4), a porous material heat storage body (5), a fresh air inlet valve (6), a fresh air inlet (7), an exhaust outlet (8), an exhaust outlet valve (9), a fresh air outlet valve (10) and a fresh air outlet (11), wherein the heat preservation layer (3) is tightly attached to the outer wall of the heat storage tank (4), the porous material heat storage body (5) is arranged in the heat storage tank (4), the fresh air inlet (7) and the exhaust outlet (8) are arranged in the outer side of one end of the heat storage tank (4), the fresh air outlet (11) and the exhaust inlet (1) are arranged in the outer side of the other end of the heat storage tank (4), the uniform end of a pipeline where the fresh air inlet (7) and the exhaust outlet (8) are respectively arranged is communicated with the heat storage tank (4) and the other end is communicated with the outside, fresh air outlet (11) and exhaust inlet (1) are respectively located at the pipeline, one end of the pipeline is communicated with heat storage tank (4), and the other end of the pipeline is communicated with the indoor.
2. A porous material heat-stored indoor ventilation heat recovery device as claimed in claim 1, wherein: the porous material heat storage body (5) is made of metal or nonmetal materials.
3. A porous material heat-stored indoor ventilation heat recovery device as claimed in claim 2, wherein: porous material heat accumulation body (5) be cylinder, spheroid, stage body or polyhedron, the cross section of porous material heat accumulation body (5) for rectangle, circular or polygon, the cross section of porous material heat accumulation body (5) along its axial unanimity or size scale, porous material heat accumulation body (5) along its axial continuously or discontinuously.
4. A porous material heat-stored indoor ventilation heat recovery device as claimed in claim 1, wherein: fresh air entry (7) and fresh air inlet valve (6) arrange the outside of heat storage tank (4) one end in, the inside of heat storage tank (4) is linked together to the pipeline one end that fresh air entry (7) locate, the pipeline other end that fresh air entry (7) locate can directly or indirectly communicate outdoors, fresh air inlet valve (6) arrange in on the pipeline between fresh air entry (7) and heat storage tank (4).
5. A porous material heat-stored indoor ventilation heat recovery device as claimed in claim 1, wherein: fresh air outlet (11) and fresh air outlet valve (10) arrange the outside of heat storage tank (4) other end in, the pipeline one end that fresh air outlet (11) locate communicate heat storage tank (4) inside, the pipeline other end that fresh air outlet (11) locate can directly or indirectly communicate indoorly, fresh air outlet valve (10) arrange in on the pipeline between fresh air outlet (11) and heat storage tank (4).
6. A porous material heat-stored indoor ventilation heat recovery device as claimed in claim 1, wherein: the heat storage tank (4) is arranged in the outer side of one end of the heat storage tank (4) through the air exhaust inlet valve (1) and the air exhaust inlet valve (2), one end of a pipeline where the air exhaust inlet (1) is located is communicated with the inside of the heat storage tank (4), the other end of the pipeline where the air exhaust inlet (1) is located can be directly or indirectly communicated with the indoor, and the air exhaust inlet valve (2) is arranged on the pipeline between the air exhaust inlet and the heat storage tank (4).
7. A porous material heat-stored indoor ventilation heat recovery device as claimed in claim 1, characterized in that: the heat storage tank (4) is arranged outside the other end of the heat storage tank (4) in the air exhaust outlet (8) and the air exhaust outlet valve (9), one end of a pipeline where the air exhaust outlet (8) is located is communicated with the inside of the heat storage tank (4), the other end of the pipeline where the air exhaust outlet (8) is located can be directly or indirectly communicated with the outside, and the air exhaust outlet valve (9) is arranged on the pipeline between the air exhaust outlet and the heat storage tank (4).
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| CN202021941922.XU CN214223326U (en) | 2020-09-08 | 2020-09-08 | Indoor ventilation heat recovery device with heat stored by porous material |
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| CN202021941922.XU CN214223326U (en) | 2020-09-08 | 2020-09-08 | Indoor ventilation heat recovery device with heat stored by porous material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL445195A1 (en) * | 2023-06-13 | 2024-02-12 | Politechnika Świętokrzyska | Filling a storage heat exchanger, especially for ventilation of rooms with alternating supply and exhaust |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL445195A1 (en) * | 2023-06-13 | 2024-02-12 | Politechnika Świętokrzyska | Filling a storage heat exchanger, especially for ventilation of rooms with alternating supply and exhaust |
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