CN106091208B - Return air circulating type capillary network radiation plate and heat exchange treatment method thereof - Google Patents
Return air circulating type capillary network radiation plate and heat exchange treatment method thereof Download PDFInfo
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- CN106091208B CN106091208B CN201610645857.8A CN201610645857A CN106091208B CN 106091208 B CN106091208 B CN 106091208B CN 201610645857 A CN201610645857 A CN 201610645857A CN 106091208 B CN106091208 B CN 106091208B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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Abstract
The invention provides a return air circulating capillary network radiation plate and a heat exchange treatment method thereof, the return air circulating capillary network radiation plate has an optimized structural design, the problem that the radiation surface of a radiation plate shell is dewed under the working condition that the refrigeration temperature is too low is greatly relieved, and the heat exchange treatment method drives the indoor air to carry out return air circulating heat exchange while carrying out radiation heat exchange on the indoor air by means of the radiation surface of the radiation plate shell, so that the integral heat exchange quantity and heat exchange efficiency of the return air circulating capillary network radiation plate are improved, the heat exchange treatment method is easy to install and can be directly applied to the existing radiation air-conditioning system, the problems that the capillary network radiation plate in the prior art is poor in dewing resistance, limited in cooling and heating capacities, complicated in transformation and installation and difficult to directly apply to the existing radiation air-conditioning system are well solved, and a new solution is provided for the radiation plate air-conditioning system, has wide market application prospect.
Description
Technical Field
The invention relates to the technical field of radiation cooling and heating terminals, in particular to a return air circulating type capillary network radiation plate and a heat exchange treatment method thereof.
Background
With the continuous development of social economy, the requirement of people on indoor comfort level is continuously improved. For the conventional air conditioning system, there still exist some problems, such as the loss caused by the coupling of temperature and humidity, the convection blowing feeling, the noise of the coil air supply, etc. The radiation air-conditioning system is more and more favored by people due to the advantages of small noise, good thermal comfort, energy conservation and the like, and the capillary network radiation plate is used as the tail end of the radiation air-conditioning system and gradually becomes an international mainstream air-conditioning tail end device.
The capillary network radiation plate is an air conditioning system terminal device which is integrally in a flat plate shape, and achieves the purpose of carrying out heat radiation heating or cold radiation refrigeration on the peripheral environment by heating or refrigerating an internal capillary network, wherein the media for heating mainly comprise hot water, steam, fuel gas, fuel oil, electricity and the like, and the media for refrigerating mainly comprise cold water, evaporant (Freon, liquid ammonia) and the like.
The advantages of the capillary network radiant panel as the tail end of the indoor air conditioning system are outstanding, but the capillary network radiant panel has the limitations of the capillary network radiant panel. The existing capillary network radiation plate is usually designed with an internal capillary network attached to a radiation surface (bottom surface) of the radiation plate to ensure good heat conduction performance between the capillary network and the radiation surface and further ensure heat supply/cold supply radiation efficiency, but the structure ensures that the cold supply temperature of the capillary network radiation plate in summer is not too low, the too low cold supply temperature can ensure that the temperature of the radiation surface is lower than the dew point temperature of indoor air, water vapor in the indoor air is easy to condense on the radiation surface to influence indoor sanitary conditions, and thus the cold supply performance of the capillary network radiation plate is limited; and in winter, although there is not the problem of dewfall, nevertheless owing to receive the restriction of radiant heating heat exchange efficiency and the requirement of comfort level, heating temperature should not too high yet, because the radiant heat exchange efficiency of capillary network radiant panel is limited, and the heat supply high temperature can make a large amount of heat gathering in the radiant panel and be difficult for giving off, and then accelerates inside capillary pipeline device ageing, weakens the heat transfer performance of capillary network, shortens life.
Although a scheme of adding an independent air drying device for dehumidification on the basis of the tail end of the capillary network radiation plate is also provided at present, or the heat exchange performance between the capillary network radiation plate and indoor air is improved by enhancing indoor airflow circulation through an independent air supply system, so that the limitation of cooling and heating conditions of the capillary network radiation plate is weakened, the increase of the air drying device and the air supply system causes the increase of the installation and construction difficulty of the whole air conditioning system, the system is complex, the manufacturing cost is high, the comprehensive utilization of cold and heat sources of the air conditioner is not facilitated, and the existing radiant air conditioning system can be used only by modifying a pipeline of the existing radiant air conditioning system and cannot be directly applied to the existing radiant air conditioning system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a return air circulating type capillary network radiation plate, which is beneficial to enhancing the anti-condensation performance of a radiation surface of the plate and simultaneously improving the energy efficiency utilization rate of a capillary network cold/heat source, has better cold supply and heat supply performance, is easier to install, can be directly applied to the existing radiation air-conditioning system, and solves the problems that the capillary network radiation plate in the prior art is poor in anti-condensation performance, limited in cold supply and heat supply capacity, complex in modification and installation and difficult to directly apply to the existing radiation air-conditioning system.
In order to solve the technical problems, the invention adopts the following technical means:
a return air circulating capillary network radiation plate is used for being installed on an indoor room and comprises a radiation plate shell which is flat as a whole and is provided with a hollow cavity, and a bottom panel of the radiation plate shell is a radiation surface;
an air return port is formed in one side edge of the bottom panel of the radiation plate shell, an air supply port is formed in one side, far away from the air return port, of the bottom panel of the radiation plate shell, a plurality of capillary position grooves extending from the position close to the air return port to the direction far away from the air return port are arranged in parallel on the bottom panel of the radiation plate shell, one end, far away from the air return port, of each capillary position groove is connected and communicated with a condensate water drainage groove formed in the bottom panel of the radiation plate shell and far away from one side of the air return port, and the condensate water drainage groove is used for guiding and communicating the condensate water drainage pipe to the bottom of the side wall, far away from the air return port, of the radiation plate shell;
in the hollow cavity chamber of the radiation plate shell, a fan with an air supply direction facing to the corresponding capillary position groove is correspondingly arranged at the position between one end of each capillary position groove close to the air return port and the air return port, a U-shaped capillary heat conduction pipe is fixedly arranged at the position of each capillary position groove along the extending direction of the capillary position groove, the capillary heat conduction pipes are sunk into the corresponding capillary position grooves and are not in contact with the groove surfaces of the capillary position grooves, a ventilation gap is reserved between the capillary heat conduction pipes and the top panel of the radiation plate shell, a capillary network water supply main pipe and a capillary network water return main pipe are fixedly arranged at the position right above the condensed water drainage groove along the extending direction of the condensed water drainage groove, and the water inlet end and the water return end of each capillary heat conduction pipe are respectively communicated with the capillary network water supply main pipe and the capillary network water return main pipe, and the capillary network water supply main pipe and the capillary network water return main pipe both extend out of the side surface of the radiation plate shell from the side wall of the radiation plate shell.
In the above-mentioned return air circulating capillary network radiation plate, as an alternative, the return air inlet is a linear strip-shaped opening extending along one side edge of the bottom panel of the radiation plate housing.
In the above-mentioned circulating capillary network radiation plate of return air, as an alternative scheme, the return air inlet is formed by a plurality of return air through-holes evenly arranged along one side edge on the bottom panel of the radiation plate shell.
In the above-mentioned circulating capillary network radiation plate of return air, as an alternative scheme, the supply-air outlet is a linear long strip-shaped opening that extends along the side edge of one side of the bottom panel of the radiation plate casing, which is far away from the return air inlet.
In the above-mentioned circulating capillary network radiation plate of return air, as an alternative scheme, the supply-air outlet comprises a plurality of supply-air through-holes that evenly arrange the setting along the side of keeping away from return air inlet one side on the bottom surface board of radiation plate casing.
In the above-mentioned return air circulating capillary network radiation plate, as an improvement scheme, the position that is located between every two adjacent capillary position grooves on the bottom panel of the radiation plate casing all arranges along capillary position groove extending direction and is provided with a plurality of supplementary supply-air outlets.
In the above-mentioned circulating capillary network radiation plate of return air, as the improvement scheme, the top panel of radiation plate casing is laid on the face towards cavity chamber and is equipped with the insulating material layer, and the one side of going towards cavity chamber on the insulating material layer coats and is had the reflecting material layer.
In the above-mentioned return air circulating capillary network radiation plate, as the improvement scheme, the bottom surface board of radiation plate casing is spread on the face towards the outside and is equipped with hydrophilic material layer or anti-condensation coating layer.
Correspondingly, the invention also provides a heat exchange treatment method of the return air circulating capillary network radiation plate, which is used for cooling and dehumidifying indoor air or heating and warming the indoor air. Therefore, the invention adopts the following technical scheme:
the heat exchange treatment method of the return air circulating capillary network radiation plate is used for cooling and dehumidifying indoor air; the method specifically comprises the following steps: cold water is introduced into a capillary network water supply main pipe of the return air circulating type capillary network radiation plate, and the cold water flows through each capillary heat conduction pipe in the hollow cavity chamber of the radiation plate shell and then flows out of a capillary network water return main pipe; simultaneously starting each fan in the hollow cavity of the radiation plate shell to enable the return air circulating type capillary network radiation plate to start working; in the process, the heat exchange between the return air circulating capillary network radiation plate and the indoor is divided into two parts, the first part is that the cold energy of cold water in the capillary heat conduction pipe is transferred to the radiation surface of the radiation plate shell through heat and then is subjected to radiation heat exchange with the indoor air through the radiation surface, and the second part is that the return air circulating capillary network radiation plate is used for carrying out return air circulating heat exchange and dehumidification on the indoor air; the specific flow of the second part of heat exchange treatment is as follows: under the drive of each fan in the hollow cavity of the radiation plate shell, indoor air enters the hollow cavity of the radiation plate shell from a return air inlet of the radiation plate shell and flows to an air supply outlet of the radiation plate shell, and in the process that airflow flows in the hollow cavity of the radiation plate shell, the airflow carries out heat convection with the capillary heat conduction pipe, meanwhile, water vapor in the airflow contacts with the surface of the capillary heat conduction pipe to be cooled and generate condensation, so that the aim of dehumidifying the airflow is fulfilled, the cooled and dehumidified air is returned to the room from the air supply outlet of the radiation plate shell, and the indoor environment temperature is reduced by circulation; and the air current carries on the in-process of the heat convection with the capillary heat conduction pipe in the cavity chamber of the radiant panel casing, the condensation water produced by condensation on the surface of the capillary heat conduction pipe then drips to the bottom panel of the radiant panel casing and locates in the capillary position recess of the position department of the corresponding capillary heat conduction pipe and collects, and the condensation water gathered in the capillary position recess is pushed to flow into the condensed water drainage recess under the blowing air current pushing action of the blower, and lead to the condensed water drain pipe via the condensed water drainage recess confluence, discharge the circulating capillary network radiant panel of return air through the condensed water drain pipe.
The heat exchange treatment method of the return air circulating capillary network radiation plate is used for heating indoor air; the method specifically comprises the following steps: hot water is introduced into a capillary network water supply main pipe of the return air circulating type capillary network radiation plate, and the hot water flows through each capillary heat conduction pipe in the hollow cavity chamber of the radiation plate shell and then flows out of a capillary network water return main pipe; simultaneously starting each fan in the hollow cavity of the radiation plate shell to enable the return air circulating type capillary network radiation plate to start working; in the process, the heat exchange between the return air circulating capillary network radiation plate and the indoor is divided into two parts, the first part is that the heat of hot water in the capillary heat conduction pipe is transferred to the radiation surface of the radiation plate shell through heat and then is subjected to radiation heat exchange with the indoor air through the radiation surface, and the second part is that the return air circulating capillary network radiation plate is used for carrying out return air circulating heat exchange on the indoor air; the specific flow of the second part of heat exchange treatment is as follows: under the drive of each fan in the hollow cavity of the radiation plate shell, indoor air enters the hollow cavity of the radiation plate shell from the air return opening of the radiation plate shell and flows to the air supply opening of the radiation plate shell, air flow carries out heat convection with the capillary heat conduction pipe in the process of flowing in the hollow cavity of the radiation plate shell, air heated and heated is sent back to the room from the air supply opening of the radiation plate shell, and the circulation is carried out, so that the indoor environment temperature is improved.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the return air circulating type capillary network radiation plate, due to the optimized design of the radiation plate shell, the capillary heat conduction pipes in the radiation plate shell and the fan, the temperature of the radiation surface of the radiation plate shell is not easy to be lower than the dew point temperature of air to cause dewing, the situation that the dewing occurs on the radiation surface of the radiation plate shell under the working condition that the refrigeration temperature of the return air circulating type capillary network radiation plate is too low is greatly relieved, dehumidification and drying treatment on indoor air is achieved through return air circulation, the content of water vapor in the indoor air is reduced, and the problem that the indoor air is dewed on the radiation surface of the radiation plate shell is further relieved.
2. In the heat exchange treatment method of the return air circulation type capillary network radiation plate, the fan drives the airflow in the cavity of the radiation plate shell to drive the indoor air to carry out return air circulation treatment when working, the bottom surface plate of the radiation plate shell is used as a radiation surface to carry out radiation heat exchange on the indoor air, and simultaneously drives the indoor air to return air to the radiation plate shell to carry out convection heat exchange with the capillary heat conduction pipe, the whole heat exchange quantity and the heat exchange efficiency of the return air circulation type capillary network radiation plate are improved by a mode of synchronous working of two heat exchange modes, and the problems of aging of internal devices and shortening of service life caused by cold/heat accumulation in the radiation plate shell are avoided.
3. The pipeline connection of the return air circulation type capillary network radiation plate is not different from that of the capillary network radiation plate in the prior art, and the return air circulation type capillary network radiation plate can be used only by respectively connecting a water supply pipeline and a water return pipeline of a cold/heat source with a capillary network water supply main pipe and a capillary network water return main pipe which extend from the side wall of a radiation plate shell, so that the problems of increased installation and construction difficulty, complex system, increased manufacturing cost and the like caused by additionally adding an air drying device and an air supply system do not exist.
4. The return air circulating type capillary network radiation plate and the heat exchange treatment method thereof provide a new solution for a radiation plate air conditioning system, and have wide market application prospect.
Drawings
Fig. 1 is a schematic top perspective view of an embodiment of a return air circulating capillary network radiant panel according to the present invention.
Fig. 2 is a cross-sectional view a-a of the return air circulating capillary network radiant panel of fig. 1.
Fig. 3 is a B-B cross-sectional view of the return air circulating capillary network radiant panel of fig. 1.
Fig. 4 is a schematic top perspective view of another embodiment of the return air circulating capillary network radiant panel of the present invention.
Fig. 5 is a cross-sectional view a-a of the return air circulating capillary network radiant panel of fig. 4.
Detailed Description
The invention provides a return air circulating type capillary network radiation plate which is used for being installed on an indoor room for use, integrates radiation heat exchange and indoor return air flow convection heat exchange through structural design optimization, can realize heat transfer between a cold/heat source in a capillary network and indoor air by means of radiation and return air flow, is beneficial to improving the energy efficiency utilization rate of the cold/heat source of the capillary network, can avoid the problem of condensation due to over-low temperature of a radiation surface in summer, greatly reduces the probability of condensation due to contact between the indoor air and the radiation surface by means of dehumidification of the return air flow, and enhances the condensation prevention performance of the radiation surface per se from two aspects.
Fig. 1 is a schematic top perspective view of a structure of a return air circulating capillary network radiation plate according to an embodiment of the present invention, and fig. 2 and 3 are a sectional view a-a and a sectional view B-B of the return air circulating capillary network radiation plate structure shown in fig. 1, respectively; as shown in fig. 1, 2 and 3, the return air circulating capillary network radiation plate of the present invention includes a radiation plate housing 10 which is flat and has a hollow cavity, and a bottom panel of the radiation plate housing is a radiation surface; an air return opening 11 is formed in one side edge of the bottom panel of the radiation plate shell, and an air supply opening 12 is formed in one side, far away from the air return opening, of the bottom panel of the radiation plate shell, wherein the air return opening 11 can be designed to be a linear long strip-shaped opening extending along one side edge of the bottom panel of the radiation plate shell, or the air return opening is designed to be formed by a plurality of air return through holes uniformly distributed along one side edge of the bottom panel of the radiation plate shell, and the air supply opening 12 can be designed to be a linear long strip-shaped opening extending along one side edge, far away from the air return opening, of the bottom panel of the radiation plate shell, or the air supply opening is designed to be formed by a plurality of air supply through holes uniformly distributed along one side edge, far away from the air return opening, of the bottom panel of the radiation plate shell, so that the air flow in the cavity of the radiation plate shell is more balanced; a plurality of capillary position grooves 13 extending from the position close to the air return port to the direction far away from the air return port are arranged on the bottom panel of the radiation plate shell in parallel, one end of each capillary position groove 13 far away from the air return port is connected and communicated with a condensed water drainage groove 14 arranged on the bottom panel of the radiation plate shell and far away from one side of the air return port, and the condensed water drainage groove 14 is guided and communicated to a condensed water drainage pipe 15 positioned at the bottom of the side wall of the radiation plate shell far away from one side of the air return port; in the hollow cavity of the radiation plate shell, a fan 20 with an air supply direction facing to the corresponding capillary position groove is correspondingly arranged at the position between one end of each capillary position groove 13 close to the air return port and the air return port 11, a U-shaped capillary heat conduction pipe 31 is fixedly arranged at the position of each capillary position groove along the extension direction, the capillary heat conduction pipe 31 sinks into the corresponding capillary position groove 13 and is not in contact with the groove surface of the capillary position groove 13, a ventilation gap is reserved between the capillary heat conduction pipe 31 and the top panel of the radiation plate shell 10, a capillary network water supply main pipe 32 and a capillary network water return main pipe 33 are fixedly arranged at the position right above the condensate water drainage groove 14 along the extension direction of the condensate water drainage groove, and the water inlet end and the water return end of each capillary heat conduction pipe 31 are respectively communicated with the capillary network water supply main pipe 32 and the capillary network water return main pipe 33, and the capillary network water supply main 32 and the capillary network water return main 33 both extend from the side wall of the radiation plate housing 10 to the side surface of the radiation plate housing.
When the return air circulation type capillary tube network radiation plate is used, liquid cold/heat source is supplied from a capillary tube network water supply main pipe and flows through the capillary heat conduction pipes in the cavity chamber of the radiation plate shell, meanwhile, each fan works to supply air to the corresponding capillary tube position groove, and because each capillary heat conduction pipe is arranged in one capillary tube position groove on the bottom surface plate of the radiation plate shell in a sinking mode, although gaps are reserved between the capillary heat conduction pipes and the groove surfaces of the capillary tube position grooves and are not in contact with each other, the cold/heat of the liquid cold/heat source in the capillary heat conduction pipes can be indirectly transferred to the bottom surface plate of the radiation plate shell serving as a radiation surface through the gap spaces between the capillary heat conduction pipes and the capillary tube position grooves, so that the bottom surface plate of the radiation plate shell can perform radiation heat exchange with indoor air; meanwhile, because the position between the end of each capillary position groove in the hollow cavity of the radiation plate shell, which is close to the air return inlet, and the air return inlet is correspondingly provided with a fan with an air supply direction facing the corresponding capillary position groove, when the fan works, the air flow in the hollow cavity can be promoted to flow from the air return inlet to the air supply outlet at the side far away from the air return inlet, so that the cold/heat transferred by the clearance space between a part of capillary heat conduction pipes and the capillary position grooves can be taken away by the flowing air flow in the hollow cavity, therefore, under the working condition of summer refrigeration, the temperature of the radiation surface of the radiation plate shell is higher than the cold supply temperature of the capillary heat conduction pipes, even if the cold supply temperature of the capillary heat conduction pipes is lower than the dew point temperature of air, the temperature of the radiation surface of the radiation plate shell is not easy to be lower than the dew point temperature of air, and the dew condensation of the radiation surface of the radiation plate shell under the working condition that the refrigeration temperature of the circulating type return air capillary network radiation plate is too low is greatly relieved, this is one aspect of exhibiting dew condensation prevention performance; the other aspect of the anti-condensation performance of the return air circulation type capillary network radiation plate is that when each fan in the radiation plate shell works, indoor air can be driven to enter the hollow cavity of the radiation plate shell from a return air inlet on the bottom panel of the radiation plate shell, and returns to the room from an air supply outlet on the bottom panel of the radiation plate shell after flowing through the ventilation gap and the capillary heat conduction pipe for convective heat exchange, so as to form return air circulation for the indoor air, under the working condition of refrigeration in summer, in the process that the indoor air enters the hollow cavity of the radiation plate shell through the return air circulation and is subjected to convective heat exchange with the capillary heat conduction pipe, water vapor in the air can be in contact with the capillary heat conduction pipe for cooling to generate condensation, and the condensed water condensed on each capillary heat conduction pipe can drip into the capillary position groove below and be collected, and the condensed water collected in the capillary position groove can be pushed to the condensed water drainage groove on the side far away from the return air inlet under the driving action of the blowing air flow of the fan, and is converged and guided to the condensed water drain pipe at the bottom of the side wall of the radiation plate shell far away from the air return inlet through the condensed water drain groove to be discharged, meanwhile, condensed water condensed by the contact of the vapor in the air and the capillary network water supply main pipe and the capillary network water return main pipe also drops into a condensed water drainage groove right below along the pipe walls of the capillary network water supply main pipe and the capillary network water return main pipe, the condensed water is converged and guided to the condensed water drain pipe at the bottom of the side wall of the radiation plate shell away from the air return inlet through the condensed water drain groove and is discharged, therefore, the indoor air is dehumidified and dried in the process of convective heat exchange between the return air circulation and the capillary heat conduction pipe in the radiation plate shell, and after the return air circulation heat exchange treatment for a period of time, the water vapor content in the indoor air is greatly reduced, so that the problem of condensation of the indoor air on the radiation surface of the radiation plate shell is further relieved; meanwhile, a fan with an air supply direction facing to the corresponding capillary tube position groove is correspondingly arranged in the hollow cavity chamber of the radiation plate shell at the position between one end of each capillary tube position groove close to the air return inlet and the air return inlet, the function of the device is not only to drive the air flow in the cavity of the radiation plate shell to drive the return air circulation treatment of the indoor air, but also to push the condensed water collected in the corresponding capillary tube position groove to converge towards the condensed water drainage groove at the side far away from the return air inlet by means of the blowing air flow of each fan, thereby playing the role of promoting the drainage of the condensed water, therefore, each capillary tube position groove can be horizontally arranged, the problem that the thickness of the capillary tube network radiation plate is increased due to the fact that the capillary tube position grooves are obliquely arranged is solved, and the whole design of the return air circulating type capillary tube network radiation plate is thinner; in addition, under the working condition of cooling in summer or heating in winter, the fan in the return air circulating type capillary tube net radiation plate drives the airflow in the cavity of the radiation plate shell to drive the indoor air to carry out return air circulating treatment, and when the bottom panel of the radiation plate shell is used as a radiation surface to carry out radiation heat exchange on the indoor air, the indoor air is also driven to return air to the inside of the radiation plate shell to carry out convection heat exchange with the capillary heat conduction pipe, so that the heat exchange quantity and the heat exchange efficiency of the whole return air circulating type capillary tube net radiation plate are improved by the way of synchronous working of the two heat exchange modes, and the problems of ageing of internal devices and shortening of service life caused by cold/heat accumulation in the radiation plate shell are avoided. Furthermore, the pipeline connection of the return air circulating capillary network radiation plate is not different from that of the capillary network radiation plate in the prior art, the return air circulating capillary network radiation plate can be used only by respectively connecting a water supply pipeline and a water return pipeline of a cold/heat source with a capillary network water supply main pipe and a capillary network water return main pipe which extend from the side wall of the radiation plate shell, only by adding a drainage pipeline to be connected to a condensate water drainage pipeline of the return air circulating capillary network radiation plate under the working condition of cooling supply in summer, and the problems of increased installation and construction difficulty, complex system, increased manufacturing cost and the like caused by additionally adding an air drying device and an air supply system do not exist.
As a further improvement of the return air circulating capillary network radiation plate of the present invention, as shown in fig. 2 and 3, a thermal insulation material layer 16 may be further laid on the top panel of the radiation plate housing 10 facing the hollow cavity, and a reflective material layer 17 may be further coated on one surface of the thermal insulation material layer 16 facing the hollow cavity; the heat insulation material layer on the top panel of the radiation plate shell is beneficial to better reducing the upward loss of heat exchange energy between return air flow in the cavity of the radiation plate shell and the capillary heat pipe, the reflection material layer is used for reducing the radiation cold/heat quantity of the capillary heat pipe to the direction of the heat insulation material layer, and simultaneously, the transmission of the cold/heat quantity to the direction of the heat insulation layer is attenuated, so that the heat exchange efficiency in the cavity of the return air circulating type capillary network radiation plate is further improved, and the cold/heat supply performance of the return air circulating type capillary network radiation plate is enhanced in an auxiliary mode. In addition, a hydrophilic material layer or an anti-condensation coating layer can be further designed and paved on the outward-facing plate surface of the bottom panel of the radiation plate shell so as to further assist in improving the anti-condensation performance of the bottom panel of the radiation plate shell.
Fig. 4 is a schematic top perspective view of another embodiment of the return air circulating capillary network radiant panel of the present invention, and fig. 5 is a sectional view a-a of the return air circulating capillary network radiant panel of fig. 4; as shown in fig. 4 and 5, if in order to further enhance the return air circulation processing capability of the indoor air, a plurality of auxiliary air supply holes 18 may be arranged on the bottom panel of the radiation plate housing 10 at positions between every two adjacent capillary position grooves 13 along the extending direction of the capillary position grooves, the meanings of other reference numerals in fig. 4 and 5 are the same as those in fig. 1 to 3, and the plurality of auxiliary air supply holes 18 arranged along the extending direction of the capillary position grooves at positions between every two adjacent capillary position grooves may be uniformly arranged or gradually densely arranged from near to far from the return air inlet, so that the indoor air can be dispersedly returned to the indoor space from each auxiliary air supply hole and air supply hole in the process of entering the hollow cavity of the radiation plate housing from the return air inlet of the return air circulation type capillary network radiation plate to the direction of the air supply hole and exchanging heat with the capillary heat conduction tube, thereby forming air supply airflow which is more uniformly distributed; the design of the return air circulating capillary network radiation plate with the additional auxiliary air supply holes is more suitable for the condition that a plurality of intercommunicating compartments are designed in an indoor space, so that air can be supplied to different compartments more uniformly; the return air circulating capillary network radiation plate without the auxiliary air supply hole is more suitable for the condition that the indoor space is an independent room, so that the air flow circulation of returning air from one side of the indoor space and supplying air from the other side of the indoor space is formed.
The return air circulating capillary network radiation plate can be used for refrigerating, cooling and dehumidifying indoor air in summer and heating indoor air in winter.
In summer, the flow of the cooling and dehumidifying treatment of the indoor air by using the return air circulating capillary network radiation plate is as follows. Cold water is introduced into a capillary network water supply main pipe of the return air circulating type capillary network radiation plate, and the cold water flows through each capillary heat conduction pipe in the hollow cavity chamber of the radiation plate shell and then flows out of a capillary network water return main pipe; simultaneously starting each fan in the hollow cavity of the radiation plate shell to enable the return air circulating type capillary network radiation plate to start working; in the process, the return air circulating capillary network radiation plate and indoor heat exchange are divided into two parts, the first part is that cold energy of cold water in the capillary heat conduction pipe is transmitted to the radiation surface of the radiation plate shell through heat and then is subjected to radiation heat exchange with indoor air through the radiation surface, and the second part is that the return air circulating capillary network radiation plate performs return air circulating heat exchange and dehumidification on the indoor air. The specific flow of the second part of heat exchange treatment is as follows: under the drive of each fan in the hollow cavity of the radiation plate shell, indoor air enters the hollow cavity of the radiation plate shell from a return air inlet of the radiation plate shell and flows to an air supply outlet of the radiation plate shell, and in the process that airflow flows in the hollow cavity of the radiation plate shell, the airflow carries out heat convection with the capillary heat conduction pipe, meanwhile, water vapor in the airflow contacts with the surface of the capillary heat conduction pipe to be cooled and generate condensation, so that the aim of dehumidifying the airflow is fulfilled, the cooled and dehumidified air is returned to the room from the air supply outlet of the radiation plate shell, and the indoor environment temperature is reduced by circulation; and in the process that the air flow carries out convection heat exchange with the capillary heat conduction pipes in the hollow cavity chamber of the radiation plate shell, each capillary heat conduction pipe is sunk into the corresponding capillary pipe position groove, a gap is reserved between each capillary heat conduction pipe and the groove surface of the corresponding capillary pipe position groove, the capillary heat conduction pipes are not in contact with each other, condensed water generated by dew condensation on the surfaces of the capillary heat conduction pipes drops into the capillary pipe position grooves at the positions of the corresponding capillary heat conduction pipes on the bottom surface plate of the radiation plate shell to be collected, the condensed water collected in the capillary pipe position grooves is pushed to flow to the condensed water drainage grooves under the pushing action of blowing air flow of the fan, the condensed water is converged and guided to the condensed water drainage pipe through the condensed water drainage grooves, and the returned air circulation type capillary pipe network radiation plate is discharged through the condensed water drainage pipe.
In winter, the process of heating and warming indoor air by using the return air circulating capillary network radiation plate of the invention is as follows. Hot water is introduced into a capillary network water supply main pipe of the return air circulating type capillary network radiation plate, and the hot water flows through each capillary heat conduction pipe in the hollow cavity chamber of the radiation plate shell and then flows out of a capillary network water return main pipe; simultaneously starting each fan in the hollow cavity of the radiation plate shell to enable the return air circulating type capillary network radiation plate to start working; in the process, the heat exchange between the return air circulating capillary network radiation plate and the indoor is divided into two parts, the first part is that the heat of hot water in the capillary heat conduction pipe is transferred to the radiation surface of the radiation plate shell through heat and then is subjected to radiation heat exchange with the indoor air through the radiation surface, and the second part is that the return air circulating heat exchange is carried out on the indoor air through the return air circulating capillary network radiation plate. The specific flow of the second part of heat exchange treatment is as follows: under the drive of each fan in the hollow cavity of the radiation plate shell, indoor air enters the hollow cavity of the radiation plate shell from the air return opening of the radiation plate shell and flows to the air supply opening of the radiation plate shell, air flow carries out heat convection with the capillary heat conduction pipe in the process of flowing in the hollow cavity of the radiation plate shell, air heated and heated is sent back to the room from the air supply opening of the radiation plate shell, and the circulation is carried out, so that the indoor environment temperature is improved. Because the heating temperature rise process in winter does not produce the comdenstion water, therefore need not to discharge the comdenstion water.
Through the above description of the structure and the refrigeration and heating processing flow of the return air circulating capillary network radiation plate, it can be seen that the return air circulating capillary network radiation plate has an optimized structural design, is beneficial to enhancing the anti-condensation performance of the radiation surface of the return air circulating capillary network radiation plate, is beneficial to improving the energy efficiency utilization rate of a cold/heat source of the capillary network, has better cooling and heating performance, is easier to install, and can be directly applied to the existing radiation air-conditioning system, thereby well solving the problems that the capillary network radiation plate in the prior art has poor anti-condensation performance, limited cooling and heating capacities, is complex to modify and install, and is difficult to directly apply to the existing radiation air-conditioning system. The return air circulating type capillary network radiation plate and the heat exchange treatment method thereof provide a new solution for a radiation plate air conditioning system, and have wide market application prospect.
Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A return air circulating capillary network radiation plate is characterized by being used for being installed on an indoor room and comprising a radiation plate shell which is flat and provided with a hollow cavity, wherein a bottom panel of the radiation plate shell is a radiation surface;
an air return port is formed in one side edge of the bottom panel of the radiation plate shell, an air supply port is formed in one side, far away from the air return port, of the bottom panel of the radiation plate shell, a plurality of capillary position grooves extending from the position close to the air return port to the direction far away from the air return port are arranged in parallel on the bottom panel of the radiation plate shell, each capillary position groove is horizontally arranged, one end, far away from the air return port, of each capillary position groove is connected and communicated with a condensate water drainage groove formed in the bottom panel of the radiation plate shell, far away from the air return port, and is guided and communicated to a condensate water drainage pipe at the bottom of the side wall, far away from the air return port, of the radiation plate shell through the condensate water drainage groove;
in the hollow cavity chamber of the radiation plate shell, a fan with an air supply direction facing to the corresponding capillary position groove is correspondingly arranged at the position between one end of each capillary position groove close to the air return opening and the air return opening, and is used for driving the air flow in the hollow cavity chamber of the radiation plate shell so as to drive the air return circulation treatment of the indoor air, and pushing the condensed water collected in the corresponding capillary position groove to converge towards the condensed water drainage groove at the side far away from the air return opening by means of the blowing air flow of each fan; all follow the fixed capillary heat pipe that is provided with a U-shaped along its extending direction in per capillary position groove position department, the capillary heat pipe is absorbed in its capillary position recess that corresponds and leaves the clearance and not contact with each other with between the grooved surface of capillary position recess, leaves the ventilation clearance between the top panel of capillary heat pipe and radiation plate casing, and position department is provided with the fixed capillary network that supplies water of following condensate water drainage recess extending direction directly over the condensate water drainage recess and is responsible for and the capillary network return water, the end of intaking and the return water end of each capillary heat pipe equally divide do not with capillary network supplies water and is responsible for and the capillary network return water is responsible for and is linked together, and capillary network supplies water and is responsible for and the capillary network return water and all extends the side surface of radiation plate casing from the lateral wall of radiation plate casing.
2. The return air circulating capillary network radiant panel of claim 1, wherein the return air inlet is a linear elongated strip-shaped opening extending along a side edge of the bottom panel of the radiant panel housing.
3. The return air circulating capillary network radiant panel of claim 1, wherein the return air inlet is formed by a plurality of return air through holes uniformly arranged along one side edge of the bottom panel of the radiant panel housing.
4. The return air circulating capillary network radiant panel of claim 1, wherein the air supply opening is a linear strip-shaped opening extending along a side edge of the bottom panel of the radiant panel housing away from the return air opening.
5. The return air circulating capillary network radiant panel according to claim 1, wherein the air supply outlet is formed by a plurality of air supply through holes which are uniformly distributed along the side edge of the bottom panel of the radiant panel shell far away from the return air inlet.
6. The return air circulation type capillary network radiant panel as claimed in claim 1, wherein a plurality of auxiliary air supply holes are arranged on the bottom panel of the radiant panel housing at positions between every two adjacent capillary position grooves along the extending direction of the capillary position grooves.
7. The return air circulating capillary network radiant panel according to claim 1, wherein the top panel of the radiant panel housing is laid with a layer of insulating material on the surface facing the hollow chamber, and the surface facing the hollow chamber of the layer of insulating material is coated with a layer of reflective material.
8. The return air circulating capillary network radiant panel as claimed in claim 1, wherein the outward facing surface of the bottom panel of the radiant panel housing is provided with a hydrophilic material layer or an anti-dewing coating layer.
9. The heat exchange treatment method for the return air circulating capillary network radiation plate as claimed in claim 1, which is used for cooling and dehumidifying indoor air; the method specifically comprises the following steps: cold water is introduced into a capillary network water supply main pipe of the return air circulating type capillary network radiation plate, and the cold water flows through each capillary heat conduction pipe in the hollow cavity chamber of the radiation plate shell and then flows out of a capillary network water return main pipe; simultaneously starting each fan in the hollow cavity of the radiation plate shell to enable the return air circulating type capillary network radiation plate to start working;
in the process, the heat exchange between the return air circulating capillary network radiation plate and the indoor is divided into two parts, the first part is that the cold energy of cold water in the capillary heat conduction pipe is transferred to the radiation surface of the radiation plate shell through heat and then is subjected to radiation heat exchange with the indoor air through the radiation surface, and the second part is that the return air circulating capillary network radiation plate is used for carrying out return air circulating heat exchange and dehumidification on the indoor air;
the specific flow of the second part of heat exchange treatment is as follows: under the drive of each fan in the hollow cavity of the radiation plate shell, indoor air enters the hollow cavity of the radiation plate shell from a return air inlet of the radiation plate shell and flows to an air supply outlet of the radiation plate shell, and in the process that airflow flows in the hollow cavity of the radiation plate shell, the airflow carries out heat convection with the capillary heat conduction pipe, meanwhile, water vapor in the airflow contacts with the surface of the capillary heat conduction pipe to be cooled and generate condensation, so that the aim of dehumidifying the airflow is fulfilled, the cooled and dehumidified air is returned to the room from the air supply outlet of the radiation plate shell, and the indoor environment temperature is reduced by circulation; and the air current carries on the in-process of the heat convection with the capillary heat conduction pipe in the cavity chamber of the radiant panel casing, the condensation water produced by condensation on the surface of the capillary heat conduction pipe then drips to the bottom panel of the radiant panel casing and locates in the capillary position recess of the position department of the corresponding capillary heat conduction pipe and collects, and the condensation water gathered in the capillary position recess is pushed to flow into the condensed water drainage recess under the blowing air current pushing action of the blower, and lead to the condensed water drain pipe via the condensed water drainage recess confluence, discharge the circulating capillary network radiant panel of return air through the condensed water drain pipe.
10. The heat exchange treatment method for the return air circulating capillary network radiation plate as claimed in claim 1, which is used for heating indoor air; the method specifically comprises the following steps: hot water is introduced into a capillary network water supply main pipe of the return air circulating type capillary network radiation plate, and the hot water flows through each capillary heat conduction pipe in the hollow cavity chamber of the radiation plate shell and then flows out of a capillary network water return main pipe; simultaneously starting each fan in the hollow cavity of the radiation plate shell to enable the return air circulating type capillary network radiation plate to start working;
in the process, the heat exchange between the return air circulating capillary network radiation plate and the indoor is divided into two parts, the first part is that the heat of hot water in the capillary heat conduction pipe is transferred to the radiation surface of the radiation plate shell through heat and then is subjected to radiation heat exchange with the indoor air through the radiation surface, and the second part is that the return air circulating capillary network radiation plate is used for carrying out return air circulating heat exchange on the indoor air;
the specific flow of the second part of heat exchange treatment is as follows: under the drive of each fan in the hollow cavity of the radiation plate shell, indoor air enters the hollow cavity of the radiation plate shell from the air return opening of the radiation plate shell and flows to the air supply opening of the radiation plate shell, air flow carries out heat convection with the capillary heat conduction pipe in the process of flowing in the hollow cavity of the radiation plate shell, air heated and heated is sent back to the room from the air supply opening of the radiation plate shell, and the circulation is carried out, so that the indoor environment temperature is improved.
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| CN106839228A (en) * | 2017-04-01 | 2017-06-13 | 重庆大学 | A kind of air-conditioning system and its cooling control method with fresh air dehumidification function |
| CN107166704A (en) * | 2017-07-05 | 2017-09-15 | 广东同益空气能科技股份有限公司 | Cold and hot convection current radiation appliance and equipment |
| CN108088000A (en) * | 2017-12-29 | 2018-05-29 | 姬晓青 | A kind of cool-down dehumidification equipment of medical inspection room |
| CN114738862B (en) * | 2021-01-07 | 2023-04-14 | 宁波方太厨具有限公司 | Radiation device for radiation air conditioner and working method thereof |
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