EP3851749A1

EP3851749A1 - Induction air conditioning panel

Info

Publication number: EP3851749A1
Application number: EP20460048.0A
Authority: EP
Inventors: Bartlomiej ADAMSKI
Original assignee: Neoklima Sp zoo
Current assignee: Neoklima Sp zoo
Priority date: 2020-01-13
Filing date: 2020-12-23
Publication date: 2021-07-21
Also published as: PL243607B1; PL432555A1

Abstract

Subject of the invention is induction air-conditioning panel with increased inductance designed for cooling, heating and together with heat recovery pipe or heat recovery panel for room's ventilation with heat/cool recovery from exhaust air. The devices uses the air induction phenomenon, Coanda effect and dynamic pressure recovery to increase static pressure for heating and cooling. The units can also be supplied with low temperature cooling water. Special design allows to keep its minimal dimensions, in particular in depth, making the solution one of the most compact solutions on the market of heating and air conditioning devices. The device allows to increase the intensity of air induction from the room at suction side of unit. The special design enables installation directly in the outer partition of the room. There is no need to distance the device from the wall to induce air from the room and air free flow to the heat exchanger integrated with the device.The device can be used as a fully integrated monoblock for ventilation, cooling and heating requiring only electric power which may come from photovoltaic panels. The device can also work as a semi-integrated ventilation, cooling and heating device cooperating with external air-to-water or water-to-water heat pumps and other ecological sources of heat and cold.

Description

The subject of the invention is an induction air-conditioning panel with increased inductance intended for ventilation, heating and air-conditioning of buildings, in particular single and multi-family residential buildings.
The purpose of the subject of the invention is to perform the functions of heating and cooling rooms with the minimum dimensions of the device. The device uses the phenomena of air induction, Coanda effect, and the recovery of dynamic air pressure into static pressure. The induction panel has water to air heat exchanger which can be supplied with hot or low water temperature (lower than dew point of air) and refrigerant both liquid and gas phase. The heat exchanger can also be made in the form of an electric heater or cool and heat technology Peltier's module. Together with the optional equipment connected to the object of the invention as heat recovery pipe or heat recovery panel installed, (for example, in the external partition of the room), it can form a semi-integrated and fully integrated ventilation, heating and air-conditioning device that also enable heat/cold recovery from exhaust air.
The version of the semi-integrated cooling and heating ventilation device is a variant that include of an induction air-conditioning panel with the increased inductance and water heat exchanger, also heat recovery pipe or heat recovery panel and an air intake-exhaust. This variant requires connection to an external heat and cooling source, such as air-to-water or water-to-water heat pumps.
The fully integrated version of the ventilation, cooling and heating device creates a variant of an induction panel with the increased inductance, equipped with heat recovery pipe or heat recovery panel with a heat exchanger in the form of an electric heater and air intake-exhaust. Similarly, the fully integrated version creates a variant of the device with heat recovery pipe or heat recovery panel with two heat exchangers of the Peltier module, where one exchanger is installed in panel in the room, the other in a panel outside the room or with two heat exchanger in a closed refrigerant system also equipped with compressor and expansion valve where one exchanger is placed in room's panel and other in second panel placed outside the room.
In such an integrated version, the subject of the invention requires only to run electric power, which may come from photovoltaic panels or other ecological power sources. The solution with a compressor requires 3, 4 times less power consumption compared to the solution with an exchanger in the form of an electric heater.
The way of installing a heat recovery pipe or a heat recovery panel and design of the subject of the invention makes this solution the most compact solution among system and devices for heating, cooling and ventilation of rooms. Heat recovery pipe and heat recovery panel are the subject of separate patent application.
There are known patent applications nr P. 425244 , P. 425647 , P. 426603 in the form of air-conditioning panels and an integrated ventilation, cooling and heating device nr P. 429719 and ventilation, cooling and heating system nr P. 429664 .
These solutions allow the use of the phenomenon of recirculation air induction caused by the air blowing from the slot or perforated holes located in the diffusion panel of the device.
These solutions are characterized by the necessity to keep a certain distance from the partition of the room on which they are installed to allow induced air to penetrate to the exchanger surface. In addition, the presented design of air distribution through the slots requires a certain distance from the heat exchanger so that the condensation formed under the exchanger does not flow down the panel surface to the air-conditioned room.
The presented constructions of induction air-conditioning panels mentioned in their horizontal version require the exchanger to be supplied with the cooling water at the appropriate temperature so that the condensate does not flow penetrate beyond the outline of the device. It reduces the possible cooling capacity of the device and allows for the assimilation of only sensible heat from the room.
The inventive solution of the induction air-conditioning panel with the increased inductance allows to reduce the distance between the diffusion panel and the heat exchanger, which in this version can be supplied with low-temperature cooling water, which increases the cooling capacity of the panel and allows for the assimilation of both sensible and latent heat gains. Moreover, the minimized distance between the heat exchanger in the structure according to the subject of the invention allows for the discharge of condensate even in overlapping of the heat exchanger and the diffusion panel in the longitudinal cross-section.
At the same time, the use of air wall inside the unit (for which is flowing at high speed air from slots or perforated holes in the diffusion panel) intensifies the phenomenon of induction the recirculating air from the room.
In the object according to the invention, the dynamic pressure of the air flowing out of the slots or perforated holes at high speed is converted into an increase in static pressure and the pressure difference between blowing and suction side.
Thus, thanks to the air blowing on the vertical partition at some angle, the Coanda effect is additionally used. It causes high induction of recirculated air by integrated heat exchanger even with small distance between suction and blowing side of the device. Additionally, it increases its efficiency.
The subject of the invention can be directly adjacent to the building partition of the room, thus reducing the space requirement for its installation in air-conditioned room. Therefore, it does not require a distance between the wall of the room and the air conditioning unit.
The induction air conditioning panel with increased inductance is available in two basic versions. In the first version with built-in supply fan unit. In the second version without a built-in supply fan. The latter solution, instead of the supply fan forcing the air to the diffusion panel, the device has an air supply and exhaust connector to which a heat recovery pipe or heat recovery panel is connected and where heat recovery is carried out along their entire length. The fresh air through micro-channels of heat recovery heat recovery pipe or heat recovery panel is led to the diffusion panel of the subject of the invention. In the front panel/grill of the subject of the invention there are openings on its fragment through which the used air is charged to the supply-exhaust connection stub and further to the heat recovery pipe or heat recovery panel. Further on, only the solution with a built-in supply fan will be here discussed. However, the variant without a built-in supply fan is configurable.
This variant differs from the unit currently available on the market in that device provides fresh air supply, exhaust used air, air induction from the room through a heat exchanger built in the device, which in its water version can be supplied with a cooling liquid of low temperature. The condensate is collected for both versions of the object of the invention and with and without a supply fan in drain pan placed under the heat exchanger coils in the device case.
An induction air conditioning panel with increased inductance is made of housing that is also a supply and flow element, heat exchanger and fan assembly integrated with the diffusion panel.
The casing consists of a front panel, through which recirculating air from the room is flowing and a rear panel, mounted on the room partition. The diffusion panel blows air at high speed at an angle to the front or back panel. The diffusion panel which slots or perforated openings air flows out at high speed, it can be located between the front and the rear panel. The diffusion panel can also be built into front panel or rear panel, then only heat exchanger is located between the front and rear panel. The heat exchanger may also be built-in and integrated in the front or rear panel of the subject of the invention. Air blown from the perforated holes or through the air slots of a diffusion panel located between the front the front and rear panels or integrated in the front or rear panels is blown at high speed onto front or rear panel at an angle. In both cases, regardless of the location of openings and air supply slots, the front panel is equipped with openings of various shapes and cross-sections through which induced air flows from the room.
If the diffusion panel is rear panel, then air gaps of perforated openings protruding above the surface of the panel exude air from them at high speed, inducing room air flowing through holes placed in front panel. Both front and rear panel casing panels are placed a short distance from each other, and there is a heat exchanger between them. The heat exchanger can also be integrated in the front or rear panel. The supply air from the rear panel can be directed towards the rear panel but also towards the front panel. In both cases induced room air flows through the flow openings in the front panel.
If the diffusion panel is located between the front panel and rear panel of the device, it may be in close proximity to them, moreover, there may be heat exchanger coils between the blowing elements and the diffusion panel, thus reducing the overall depth of the device. The heat exchanger can also be integrated in the front or rear panel. The supply air in the diffusion panel can be directed at a certain angle to both the rear panel and the front panel.
If the supply air is blown onto the front panel from diffusion panel placed either in the rear panel of the housing or placed between the front panel and the rear panel of the housing, then the through-holes of the front panel (through which induced room air flow)s are located fragmentarily on the front panel and not on its entire surface.
If the front panel is also a diffusion panel of the device, perforated holes or air gaps are placed between the openings through which induced air flows into the device. The slots and perforated holes are then positioned so that the air flows at high speed only to the rear panel and does not flow by the heat exchanger coils between the rear and front panel. Only induced air from the room flows through the coils. When the subject of the invention is mounted horizontally, condensate trays are placed under the exchanger coils. They collect the condensate formed as a result of the flow of warm air through the cold surface of the heat exchanger coil supplied with cooling water with a low temperature below the dew point of the air induced from the room and flowing into the exchanger.
Supply air slots or perforated openings at high speed is directed at an angle to rear panel mounted on the room wall or to the front panel. The air blown on the rear panel or the front panel causes an increase in pressure in the layer of the panel, the pressure difference between the blowing and suction sides and the induction of air from the room. The dynamic air pressure is recovered to increase the static pressure within the rear or front panel. This air is quickly entrained due to the Coanda effect, and due to the large pressure differences between the discharge and suction sides (resulting from the conversion of the dynamic pressure of the air flowing at high speed from the slit into static pressure) the air flow from the room through the heat exchanger is intensified. The Coanda effect is made possible by blowing air flowing from the slots or perforated openings to the rear or front panel at a certain angle, but also by its parallel flow along the surface of the rear or front panel.
The subject of the invention has been shown in an exemplary embodiment on the drawing according to the figure 1 and according to the figure 2 showing the structure and principle of operation of the device. The drawing according to the figure 1 shows the solution in which the diffusion panel is placed between the front and rear panel and in the version with air blowing onto the rear panel. The drawing according to the figure 2 shows an example of a solution in which the diffusion panel is both the front panel and the rear panel, and the air blast is applied to the rear panel of the subject of the invention. The heat exchanger for both versions according to figure 1 and according to figure 2 is shown as being located between the front and rear panels of the housing of the subject of the invention.
The induction air-conditioning panel with increased inductance shown in figure 1 consists of an outer casing 1 in which, between the front 2 and rear 4 panels, there are several parallel or centrifugally star-shaped conductors, forming the so-called diffusion panel 7 and ending along the entire length with an air slot 3 or perforated holes 3. Air exiting at high speed from the air gap 3 or the perforated holes 3 is blown onto the rear baffle 4 of the case opposite the gaps/perforated holes 3. Air gaps 3 or perforate openings 3 of the housing are located at certain angle to the rear panel 4, which creates a Coanda effect in the wall layer of the partition. Due to the effect of air flowing out of the slots at high speed and at a certain angle on the rear panel 4, the static pressure on the discharge side increases, the pressure difference between the suction and discharge sides increases, and the previously mentioned so-called Coanda effect occurs. As a result, there is an increase in the induction of air from the room on the suction side of the object according to the invention, which flows more intensively through the heat exchanger 5 integrated therein. The heat exchanger 5 can be supplied with cooling water, heating water, a refrigerant in the vapor or liquid phase. The exchanger 5 may be an electric heater or Peltier module. Positioning the air blast at a certain angle on the rear panel 4 for its version with parallel branches of the diffusion panel allows the positioning and displacement of the heat exchanger coil 5 even between the blower elements of the diffusion panel 7 through which air flows through slots 3 or perforated holes 3. This allows the depth dimension of the device to be reduced. In summer, the heat exchanger 5 can then be supplied with cooling water, also at low temperature, and the produced condensate can also flow down by gravity on the surface of the diffusion panel 7. In this way at the same time, the correct flow of the condensate inside the object of the invention is obtained and easier to discharge them outside, together with the condensate under the heat exchanger 5. The fan 6 is responsible for the air flow, which suck in the air from the room through the openings placed fragmentarily on the front panel 2 of the housing 1 and forcing it to the closed profile of the diffusion panel 7. The fan 6 with the whole diffusion panel 7 and the heat exchanger 5 is placed inside the casing 1. The entire structure is closed by an outer casing 1, in the front panel 2 there is are openings from the room side and through which induced air flows to the subject of the invention and which in its lower part together with the rear panel of the casing 4 forms a drip tray. from the room side through which induced air flows to the subject of the invention and which in its lower part together with the rear panel of the casing forms a condensate tray. The entire structure can be located directly next to the room's building partition, allowing the induction of air from the room without keeping the distance from the wall.
The induction air-conditioning panel with the increased inductance from the drawing according to figure 2 is built similarly to the solution from the drawing according to figure 1, but inside the housing 1 between the front panel 2and the rear panel 4 there is no diffusion panel 7, only the diffusion panel 7 is integrated in the front panel 2 and/or in the rear panel 4 of the enclosure 1. The front panel 2 of the device also has openings through which induced air flows to the device. The diffusion panel 7 can also be integrated simultaneously or exclusively with the rear panel 4 of the housing of the device 1. In the rear panel 4 then there are perforated openings 3 or air slots 3 from which air is blown at high speed onto its surface. Perforated holes 3 and slots 3 extend above the surface of the rear panel 4 in such a way that air is blown over the entire surface, inducing air from the room. The induced air from the room flows successively through the openings in the front panel 1, heat exchanger coils 5 and together with the air blown from the perforated openings 3 or air slots 3 it flows through the supply opening into the room. Air can also be blown at high speed from the rear panel 4 to the front panel 2. Then the front panel 2 has inlet openings, located only on its fragment, through which induced air flows from the room.

Claims

Induction air-conditioning panel with increased inductance equipped with a heat exchanger, diffusion panel, fan and housing of various shapes, including a round one, characterized in that its housing 1 consists of two front 2 and rear 4 panels, with a heat exchanger 5 placed between these panels and the rear panel 4 adjacent to the partition of the air-conditioned room, simultaneously, both panels 2,4 or one of these panels 2 or 4 constitute a diffusion panel 7 into which air is blown by a fan 6 integrated with the device and from which air is blown at high speed through perforated holes 3 or air slots 3 located in the front 2 or rear panel 4 at a certain angle or parallel to the front 2 or rear panel 4 of the housing 1, at the same time, recirculation air is induced from the room, which flows successively through the openings in the front panel 2, the heat exchanger 5 and, together with the air blown from the diffusion panel 7, is supplied into the room through the housing 1 air outlet.
An induction air-conditioning panel with increased inductance according to claim 1, characterized in that the casing 1 may consist of a front panel 2 with only inlet openings and a rear panel 4 with a diffusion panel 7 and a heat exchanger 5 located between these two panels 2,4 simultaneously the diffusion panel 7 formed by closed air sleeves ending along its length with an air gap 3 or perforated openings 3 can also form various shapes also in the form of a single air sleeve guided freely, creating, for example, the outer edge of the circumference of the casing 1 also air channels running in parallel, also in the shape of starfish, and other possible solutions in which the diffusion panel 7 ends with any closed shape equipped with an air gap 3 or perforated holes 3, moreover, built-in and integrated with the diffusion panel 7 fan 6 forces air to the diffusion panel 7 ending with air gaps 3 or perforated holes 3, and then the air flows through air gaps 3 or perforated holes 3 at an increased speed onto rear panel 4 or front panel 2 from the inside and at an angle or parallel to them, causing suction of induced air from the room which flows through the holes placed in the front panel 2 and then the heat exchanger 5 and then, together with the primary air, it flows from the air supply opening of the housing 1 into the room.
An induction air-conditioning panel with increased inductance according to claim 1 and according to claim 2, characterized in that the inlet openings in the front panel 2 through which the induced air flows from the room can be placed evenly on its surface or only on a part of its surface, also in such a way that when the induction panel is installed horizontally at the ceiling, the heat exchanger coils 5 are placed outside the inlet openings of the induced air, and simultaneously under the heat exchanger is on the surface of the front panel 2 from the inside of the casing 1 beyond its perforated surface drip tray 11, also similarly for the vertical version of the subject of the invention, the tray condensate 1 is placed under the heat exchanger coils 5 in the lower part of the housing 1 between the front 2 and rear 4 panels.
An induction air-conditioning panel with increased inductance according to claim 3, characterized in that inside its housing 1 or outside it, in the building partition of the room, there may be a second fan 8, which is connected from the discharge side to the heat recovery pipe 9 or recuperation and ventilation panel 9 simultaneously the fan 8 though the openings placed in the housing 1 of the induction panel sucks the air from the room and forces it outside through the microchannels of the heat recovery pipe 9 or the recuperation and ventilation panel 9, while at the same time the outside air is sucked in by the fan 6 and flows through adjacent microchannels heat recovery pipe 9 or recuperation and ventilation panel 9 and through partitions 10 with increased thermal efficiency, it exchanges heat with the exhaust air, then it flows into the diffusion panel 7 and flows out of it through air gaps 3 or perforated holes 3 causing air induction from the room and its flow through the heat exchanger 5 and then flows into the room through the supply opening of the induction panel housing 1.
An induction air-conditioning panel with increased inductance according to claim 4, characterized in that the heat recovery pipe 9 or the recuperative-ventilation panel 9 connected to it and placed in the wall on the outside ends with a second identical external panel is equipped with a heat exchanger and both exchangers can be connected to each other through the closed refrigeration system filled with a refrigerant containing a compressor and an expansion element, creating a fully integrated, monoblock and decentralized ventilation, heating and cooling device or both exchangers can be supplied with refrigerant or other liquids from external sources, or the external panel is not equipped with a heat exchanger, or instead of the external panel, the heat recovery pipe 9 or the recuperation and ventilation panel 9 is connected to the outside through an intake-exhaust element in this way creating a semi-integrated ventilation, cooling and heating device.
An induction air-conditioning panel according to claim 5, characterized in that the intake-exhaust element connected to the heat recovery pipe 9 or the recuperative-ventilation panel 9 consists of alternately positioned and separated by a partition 10 microchannels of fresh and exhaust air, all of the exhaust air microchannels in relation to the fresh air microchannels located are in different directions so that both air streams do not come into the room, additionally, the entire intake and exhaust element is closed from the upper part or/and on the sides with a roof protecting the heat recovery pipe 9 or the recuperative-ventilation panel 9 against unfavorable weather conditions, including rain and snow, which may penetrate to its interior and to the room.
An induction air-conditioning panel with increased inductance according to claim 3, characterized in that the heat exchanger 5 between the front panel 2 and the rear panel 4 of the circular housing1 is formed in the form of a flat spiral exchanger in such a way that in the main supply manifold there are one next to it on the other, at one height or slightly shifted in relation to each other at the height, connection nozzles to individual finned exchanger coils, at the same time each of these outgoing coils forms a spiral/circle full or partial shape with an increasingly larger diameter so that in the farthest from the water connection of the main collector the coil has the smallest diameter and this coil closest to the supply stub pipe, the main collector has the largest diameter, and in the center of such an exchanger there is free space for centrally located fan 6 or a stub pipe for the supply and exhaust ventilation duct with recuperation along the entire length of the ventilation duct, at the same time the returns of these spiral coils are successively led to the return collector.
An induction air-conditioning panel with increased inductance according to claim7, characterized in that the heat exchanger 5 between the front panel 2 and the rear panel 4 is guided in such a way that the exchanger's supply port is led together with the heat exchanger outlet port, the exchanger having the form of two circles with small and large diameter, the smaller one is connected to the exchanger's supply pipe and it is a supply conduit around the entire circle, and the larger one is the outlet collector conduit, at the same time between them, ribbed conduits perpendicular to both circles run parallel to each other and converge in the collector outlet of the exchanger 5.
An induction air-conditioning panel with increased inductance according to claim 7, characterized in that the heat exchanger 5 in the form of a circle can be made in the form of separately guided successive microchannels placed in one monolithic closed shell in the form of a circle, semicircle or other incomplete circles inside which run microchannels of different geometries and shape, with external ribs running on the outside of the shell, which runs along the entire width of the shell and is parallel to the direction of the air flow in the form of ribs, including micro-ribs, or in the form of triangular elements increasing the heat exchange surface.
An induction air-conditioning panel with increased inductance according to claim 3, characterized in that the device can be made without a fan 6 supplying the diffusion panel 7, and in its place there is a connection socket for a single-duct supply-exhaust ventilation duct 9 or a recuperation and ventilation panel 9 and through this connection socket for supply air - exhaust air located in the place of the fan 6 fresh air flows into the diffusion panel 7, simultaneously through openings or slots placed in the front panel 2 of the housing 1, the air is removed fragmentarily on its surface to the connection of the supply and exhaust spigot, thus the device is not equipped with a fan 6 fully ventilation function: supply of fresh air and exhaust air in combination with cooling and heating of the air in the room through a heat exchanger 5, while heat recovery is carried out along the entire length of the heat recovery duct 9 or recuperative-ventilation panel 9.
An induction air-conditioning panel with increased inductance according to claim 5, characterized in that for its version by a recuperative-ventilation panel 9 or a heat recovery conduit 9 and a second external induction panel with increased inductance and heat exchangers 5 present in both panels, coupled to each other and connected with a compressor, with an expansion element and supplied with refrigerant, it can form a fully integrated device, requiring only electricity from photovoltaic panels.
An induction air-conditioning panel with increased inductance according to claim 3, characterized in that the heat exchanger can be supplied with cooling water, heating water, refrigerant in liquid or gas phase or it can be a heating element in the form of an electric heater or a Peltier module element.
An induction air-conditioning panel with increased inductance according to claim 3, characterized in that the extended and reduced height version or by its additional duplication, on the basis of a mirror image, at the same time is equipped in its lower part along its entire length or fragmentarily with a curtain rod and clips the role of a curtain rod, which effectively integrates with the basic equipment of the room and conceals the ventilation, cooling and heating system.
An induction air-conditioning panel with increased inductance according to claim 3, characterized in that it is additionally equipped with LED or other type lighting, thus effectively integrating with the apartment's equipment and extending the functions performed by the ventilation, cooling and heating panel with interior lighting functions
An induction air-conditioning panel with increased inductance according to claim 12, characterized in that the heat exchanger 5 can be integrated with the diffusion panel 7 and be an integral part thereof.