NL2004595C2 - HEAT EXCHANGER. - Google Patents

Description

Short indication: heat exchanger.

DESCRIPTION

The present invention relates to a device for exchanging energy between hot and cold air, such as a heat exchanger, an installation provided with such a device and one or more other elements, a method for providing hot or cold air, use of such a device or installation, and a method for cleaning such a device or such a device.

A heat exchanger is a device that transfers energy from one medium (liquid, gas) to the other. An ideal heat exchanger cools the first medium to the temperature at which the second started and vice versa. This ideal can be approached with the countercurrent principle. There are various types of heat exchanger, such as a tube heat exchanger, a plate heat exchanger, a recuperative heat exchanger, a spiral heat exchanger, a radiator, and a heat pump.

The tube heat exchanger is also known in the industry under its English term Shell & Tube. In its simplest form, it is a tube in another tube, or a tube with a jacket around it. Usually, however, there are 20 multiple tubes in a large jacket.

A plate heat exchanger is a specific type of heat exchanger. A plate heat exchanger consists of a number of thin, ribbed plates. These plates are pressed against each other in a frame, wherein the edges of the plates are provided with a gasket or wherein the plates are welded together at the edges. In this way, parallel channels are created between the plates. One liquid is led through the even channels, while the other liquid is led through the odd channels.

Such a device is known from German application DE 100 36 079 A1. In this device, energy is recovered and moisture is regulated, as required. On the one hand there is a supply of (outside) air, on the other hand an outlet of air from a building or house. It is an air / air exchanger with energy and moisture recovery, without using process water.

Such a device is also known from German application 2 DE 198 44 905 A1. However, this is a combined device for several households, concerning a ventilation unit with heat recovery, possibly to be built into walls, without using process water.

Such a device is also known from German application DE DE 198 44 905 A1. This is an aeration device, comprising a heat exchanger, a fan, a filter and a condensation outlet.

Such a device is also known from German application DE 10 2006 048 103 A1. This is a device provided with an air / water heat pump that is completely surrounded and is typically placed on a roof. This is a heat pump that draws the energy from the outside air to generate and deliver heating and / or cooling water to radiators in a building.

NL 8203416 describes a heat exchanger for heating homes or buildings by means of industrial cooling water. It is a heating system that has no cooling function. There is also no heat recovery from exhausted ventilation air.

US 3,688,759 describes a heat exchanger placed outside for heating. It is a directly fired (gas) heater that has no cooling function. This heater draws in ventilation air through 20 venturi-like construction, without using process water.

FR2930981A1 relates to a directly fired (gas) heater that has no cooling function. This heater recirculates air without using process water.

DE102005011222A1 concerns a ventilation unit without heating and / or cooling. This unit does not use any process water.

None of the above mentioned heating or cooling units with or without heat recovery, with or without natural or mechanical ventilation, can handle all climate control functions. As a result, a unit 30 must be provided for each function separately, at best for a number of functions simultaneously. This is expensive, maintenance-sensitive, not optimal in terms of sustainability, energy consumption, performance, etc.

A drawback of a heat exchanger, as shown for example in Figure 1, with an inlet of outside air (1), an inlet of inside air (3), an outlet of outside air (4), an outlet of inside air (2), is that the heat exchanger always gains energy, ie is always active. In this configuration, exhaust over the heat exchanger takes place. A further disadvantage is that an extra throughput is required (bypass). As a result, the energy efficiency of such a heat exchanger is relatively low, such as about 60%.

A still further drawback is that prior art can freeze heat exchangers through condensation in the heat exchanger in cold weather, with all the associated consequences.

Prior art heat exchangers also have the disadvantage that they accumulate dust and germs, such as bacteria and viruses. This leads, for example, to disorders such as "sick-building" syndrome. It can also give rise to respiratory complaints and further cause illnesses. In particular, these disadvantages occur with modern buildings, which can only be ventilated to a very limited extent.

A further drawback is that prior art heat exchangers cannot easily be cleaned. Cleaning often involves partially or completely disassembling the heat exchanger, cleaning it, and reassembling it. This is labor-intensive and costly.

There is therefore still a need for improved heat exchangers which do not have one or more of the above disadvantages and / or solve one or more of the above problems, without jeopardizing other advantageous properties.

SUMMARY OF THE INVENTION

The present invention has for its object to provide a device according to the preamble with which it is possible to eliminate one or more of the above disadvantages and / or to solve one or more of the above problems, while maintaining other advantageous properties.

To this end, the invention provides a device for providing hot and / or cold air provided with at least two inlets and at least two outlets, wherein at least one first inlet and at least one first outlet are in a first space and wherein at least one second inlet and at least one second outlet are located in a second space, at least one fan, preferably at least one air / air heat exchanger for exchanging energy between hot and cold air, the at least one fan being arranged is to move air from an inlet to an outlet, wherein an at least one first inlet, an at least one second outlet, and the optional at least one air / air heat exchanger together form a functional first connection between the second space and the first space, wherein an at least one second inlet, an at least one first outlet, and the optional at least one air / air heat isselaar together form a functional second connection between the first space and the second space, the device preferably having at least four substantially separate compartments, each compartment comprising at least one inlet or at least one outlet, the first connection comprises at least one liquid / air heat exchangers in the inlet and in the outlet, and wherein preferably the second connection comprises at least one liquid / air heat exchangers in the inlet or outlet, preferably at least one liquid / air heat exchangers in the inlet inlet and into the outlet.

The present device has the advantage that it can handle all functions for climate control. As a result, a unit does not have to be purchased separately for each function, in the best case for a number of functions simultaneously. This is therefore inexpensive, low maintenance, and optimal in terms of sustainability, energy consumption, performance, etc.

A further advantage of the present heat exchanger is that the heat exchanger does not always generate energy, i.e. is not always active. A further advantage is that no extra throughput is required (bypass). As a result, the energy efficiency of the present heat exchanger is relatively high, depending on the precise application, more than about 75%, and in some applications, more than 95%. This saves considerable energy costs and reduces the burden on the environment.

A still further advantage of the present heat exchanger is that, due to the absence of condensation in the heat exchanger, it does not freeze when cold.

The present heat exchanger also has the advantage that this substance and pathogens, such as bacteria and viruses, do not accumulate, or accumulate less. This prevents all kinds of disease symptoms and / or disorders.

A further advantage is that the present heat exchanger can easily be cleaned. This cleaning is described in detail below.

The present air / air heat exchanger has a high efficiency and, for example, accounts for 96% or more of the recovery without energy being put into it.

The heat exchangers (9) in Figure 2 are, for example, liquid / air energy exchangers. Other suitable heat carriers can also be used. These heat exchangers are therefore suitable for exchanging both cold and energy.

By coupling the liquid / air energy exchangers on the liquid side in a suitable way and by pumping the liquid around, for example exchangers 9c with 9b, a little extra recovery is possible. A controller can be used in an example to determine whether this recovery is suitable in a given situation, in the sense that pumping around may cost more energy than it produces. In one example, exchanger 9a can be coupled to 9d, such as at low outside temperatures, whereby energy is immediately returned to the outside, although this costs energy.

In an example, there is the possibility of using the liquid / air energy exchangers for heating and / or cooling.

In the summer, for example, 9a can also be used during the day to pre-heat tap water to be heated. For example, by circulating process fluid in an (insulated) storage vessel (boiler) through the heat exchanger 9a, the cold tap water from approximately 15 ° C, which flows to a combi boiler, is already preheated to 25 ° C, for example, and that saves gas consumption and reduces CO2 emissions.

Conversely, during the night the process water can be used to make cooling water and then use it again during the day for cooling.

In winter, frost 9a can be used to protect the air / air heat exchanger against freezing. That is a reason to switch off the current commercially available heat exchanger in the winter. This while there is the greatest need to recover the energy.

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Additional heating becomes possible, for example, by controlling the central heating water through 9b, whereby the ventilation air is heated.

The present invention has a preferably an air / air (counterflow or crossflow) heat exchanger. An advantage hereof is that it cannot freeze because liquid / air exchangers are coupled to both inlets and both outlets. A further advantage is that such an independent unit can heat and at the same time pre-heat and / or cool process liquid. An independent unit can cool and at the same time pre-heat and / or cool process fluid. A further advantage is that an independent unit in bypass mode 10 can ventilate by recirculating process fluid without energy transfer (simultaneously in and out). The system can also be connected to cold and heat sources with process fluid.

With regard to the term "inlet" is meant an access to the present device for a liquid medium, such as air, for example in the form of a tube.

With regard to the term "outlet", an outlet to the present device for a liquid medium, such as air, is intended, for example in the form of a tube.

With respect to the term "compartment" is meant a container of the present device for a liquid medium, such as air, for example in the form of a substantially sealed housing. The housing may, for example, be made of sheet steel and furthermore be in any desired shape, such as rod-shaped, trapezoidal, multigonal, etc.

With regard to the term "warm" it has been noted that this is a relative term. In this application, warm therefore has the meaning of "relatively warm", for example an interior space that is warm in relation to an exterior space. A similar argument applies to the term "cold".

With regard to the term "air" it has been noted that this refers to a usual application, for example a heat exchanger in houses. Similarly, however, the concept of the present system is suitable for exchanging energy in liquid flows. To this end, the present device must be further adapted.

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With regard to functionally communicating, it is meant that a liquid medium, specifically air, can flow from an inlet to a heat exchanger, without or hardly being in contact with another stream. The air from an inlet then flows to an outlet without or hardly being in contact with another stream. As such, a channel is formed, as it were, consisting of an inlet, a (part of) a heat exchanger, and an outlet. This channel is completely or almost completely separated.

Exchange of energy takes place in a conventional manner, such as by a cross current or by a counter current, preferably by a counter current. A countercurrent has a higher efficiency, up to more than 95% in terms of efficiency. A cross current may be somewhat simpler to implement and offers corresponding advantages.

The heat exchanger is preferably a liquid / air heat exchanger, wherein liquid is in a first part of the heat exchanger 15, such as an internal part, and (to be treated) air is located in a second part of the heat exchanger, such as an external part. As a liquid, for example, water is used, or a liquid with a low melting point.

The capacity of the heat exchanger is adjusted on the one hand to the size of the space, typically an inner space, such as an inner space of a home or building, and on the other hand to the refresh rate. For example, in an example the capacity is 300 m3 / hour, and an internal path length of the heat exchanger 400 mm. An efficiency of 95-96% is thus obtained with a counterflow exchanger.

The device further comprises a fan for displacing air. Depending on the situation, several (smaller) fans can be included, which, for example, each independently control an imaginary "channel". By fan is meant a (turbo) machine that ensures that air or a gas is set in motion. A fan is used in this case to provide a room with fresh air, or to cool warm air, for example, by allowing 30 (cool) air to flow over it. A rotor of a fan is usually driven by a brushless motor, such as a brushless DC motor, with which better efficiency can be obtained, such as an efficiency of more than 60%. Characteristic is that the intake air is immediately displaced.

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DETAILED DESCRIPTION OF THE INVENTION

In a first aspect the invention relates to the device according to claim 1.

In an example, the device according to the invention is further provided with at least one air flow controller, preferably provided with software. With an air flow controller, the amount of air that is refreshed per unit of time is controlled, as well as the temperature thereof. The efficiency of the heat exchanger can also be optimized with the controller. Preferably, the controller also contains software for real-time determination of optimum settings, as indicated above. An example of an air flow controller is a fan in which the position of a vane of a fan is changed or the speed of a fan is adjusted.

In an example, the device according to the invention is further provided with one or more of a temperature sensor for measuring temperature in an air stream, a humidity sensor for measuring relative humidity in an air stream, a time sensor, at least one filter, such as a electrostatic filter, a CO2 sensor, a system clock, and a temperature controller.

By measuring the temperature in an air stream, a temperature difference with another air stream can be determined. As a result, for example on the basis of a desired inside temperature, an air flow rate and the temperature to be set thereof can be calculated. In terms of, for example, energy consumption, the present device can thus be optimally utilized. An example of a temperature sensor is a PT-100.

The present device can likewise comprise a humidity sensor, for example for calculating dew point (partly on the basis of temperature) and desired relative humidity. For example, a room that is too dry can be supplied with extra moisture, and a room that is too moist can be rid of extra moisture. An example of a humidity sensor is Sensirion SHT-11.

In one example, the device also comprises a time sensor, with which, for example, a program can be set, such as a day-night program. An example of a time sensor is a Seriologic SR2.

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In one example, the device also comprises a CC 2 sensor, for measuring CO2. CO2 is an important component in the air, in particular for determining whether air exchange is desired. By measuring a quantity of CO2, it can be determined whether and how much air needs to be changed.

In an example, the device also comprises a system clock for determining the time and for coordinating the time.

In one example, the device also comprises a temperature controller, with which temperature in, for example, an interior space can be set, comparable to that typically coupled to a central heating system. An example of a temperature controller is an Omron E5CN.

In an example, the device according to the invention is further provided with at least one electrostatic filter. In principle, a normal filter is also satisfactory, but an electrostatic filter is better able to capture small particles, such as dust and possibly some of the bacteria. In that sense, a membrane filter can also be considered. In one example, the electrostatic filter is positioned so that it cleans incoming air. Depending on the available space, the electrostatic filter can be placed horizontally or vertically. An example of an electrostatic filter is a Trion filter.

In an example, the device according to the invention comprises at least two fans, which fans are in communication with each other at closed inlet and closed outlet. An example of a fan is a D1G133_AB29_52 from Papst.

In one example, the device comprises at least two fans, each provided with a filter, or at least one fan per inlet. This has the further advantage that by closing the valves in the device, a first fan can clean a filter of a second fan and can blow out contaminants without much effort. The first filter can then also be cleaned by reversing the operation. In one example, the device is provided with a control that ensures regular cleaning, such as, for example, every week or every month. In one example, the filter may include an indicator that indicates when the filter is to be cleaned, such as a dust quantity indicator. In this way, a controller can determine an optimum cleaning time based on this and then have the cleaning carried out.

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In an example, the device according to the invention is further provided with at least a first liquid / air heat exchanger which is in connection with at least a second liquid / air heat exchanger, preferably each first liquid / air heat exchanger is in connection with every second liquid / air air 5 heat exchanger. Connecting the heat exchangers to each other increases the functionality of the system, as described in the application. Capacity in terms of energy transfer and air supply is also increasing further. The energy efficiency also increases further in specific cases.

In an example the device according to the invention is further provided with one or more valves for regulating air flow, for example arranged for closing off an inlet or an outlet, and / or one or more valves for regulating fluid flow, for instance arranged for closing a liquid / air heat exchanger, connecting a first liquid / air heat exchanger with a second liquid / air heat exchanger, connecting a liquid / air heat exchanger with a heater, connecting a liquid / air heat exchanger with a cooler, reversing a flow direction thereof, and combinations thereof. The device can be optimized by means of valves, for instance in terms of capacity, energy consumption, moisture management, etc. Moreover, these valves can be used to form a channel between two or more filters, whereby filters can be cleaned. Furthermore, these valves, such as, for example, three-way and four-way valves, can enable connection to further elements, such as a cooler or a heater. Specific details of embodiments become apparent from the figures and examples. An example of a valve is a Danfoss CHV, particularly suitable for transporting process fluid.

In an example, the device according to the invention is further provided with one or more pumps for regulating liquid flow in a liquid / air heat exchanger. These pumps can allow fluid to flow through a desired channel, or just flow around it. A number of examples of these are worked out in detail in the figures.

An example of a pump is a Grundfos Alpha2.

In an example, the device according to the invention, wherein the heat exchanger comprises a liquid. Typically, a heat exchanger comprises a liquid for proper operation, such as water, or a liquid medium with a lowered freezing point. An example of a heat exchanger is given in Figure 2e.

In an example the device according to the invention in which the at least one liquid / air heat exchanger has an effective surface of at least 1 m2 per meter of heat exchanger, more preferably at least 2 m2 per meter, even more preferably at least 5 m2 per meter, such as at least 10 m2 per meter. An efficient exchange of energy from air to liquid and / or vice versa is thus obtained. The heat exchanger preferably comprises a large number of ribs, such as more than 50 per linear meter. It has been noted that the surface is generally limited by available space, such as in a cavity.

In a second aspect the invention relates to an installation for providing hot and / or cold air comprising a device according to the invention, further comprising one or more elements of a cooler, a heater, such as a central heating, a connection system for communication between elements and design, and a housing.

A device according to the invention can be used in many applications. By adding a cooler, such as an air conditioner, the cooling capacity can be improved. This is especially important if the outside temperature is relatively high, such as in the summer or in warm regions. An example of an air conditioner is a Siemens PA19000M. A heater, such as a CV, can also be added. An example of a CV is a Remeha Avanta 28c. Typically, such an installation also includes connecting elements, such as tubes, which facilitate transportation of liquid medium, such as air or water.

Typically, an installation also includes a housing, so that, for example, an installation can be installed as a component. In one example, most components of the installation are concealed in the housing so that they are out of sight.

In a third aspect the invention relates to a method for providing hot and / or cold air comprising the steps of providing outside air to a device according to the invention, guiding outside air through the device to obtain 12 or more unheated air, and providing heated or unheated air to an interior space that includes indoor air.

In an example, the method for providing warm and / or cold air comprises the steps of providing indoor air to a device according to the invention, guiding indoor air through the device to obtain cooled or non-cooled air, and providing air cooled or not cooled to an outside space comprising outside air.

In an example, the method comprises a simultaneous combination of the steps as mentioned above. This example occurs in particular when outside air and indoor air are treated more or less simultaneously.

In a fourth aspect, the invention relates to the use of a device according to the invention and / or an installation according to the invention for at least one of refreshing air, preheating outside air, cleaning air, removing and / or killing germs, reducing noise production, cleaning filters present therein, controlling the device without load, drying a cavity, increasing the insulation value of a cavity, heating up a heat reservoir, cooling a room , preheating water such as central heating water and tap water,

The present invention thus advantageously provides an installation in which air can easily be cleaned, which improves the quality of air and reduces the risk of infections in humans (and animals).

In many state-of-the-art installations, the noise level, and / or the continuous and repeated switching on and off, is perceived as disturbing by residents and / or users. The present installation has the advantage of reduced noise production due to its inventive method of load-dependent control.

The present invention thus advantageously provides an installation in which filters can be easily cleaned, which improves the quality of air and reduces the risk of infection in humans (and animals).

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Thus, the present invention advantageously provides a cavity that is drier and therefore has an improved insulation value. As a result, the energy consumption of a home or a building is reduced.

As a further advantage, outside air can be pre-heated, whereby the risk of freezing of a heat exchanger is considerably reduced or even virtually absent.

A further advantage is that the present device and / or installation can be controlled without a load. This reduces, among other things, its energy consumption, its noise production, and its maintenance sensitivity, and extends its service life.

As a further advantage, the present device can be used for preheating water to be heated, which reduces energy consumption.

In a fifth aspect the invention relates to a method for cleaning a device according to the invention and / or an installation according to the invention, comprises the steps of closing valves to form an open connection between a first and second filter making a second filter passive, for example by switching off a motor thereof and, in the case of an electrostatic filter, de-energizing it, and running a motor of a first filter and cleaning the second filter therewith.

This has the important advantage that filters remain cleaner over time, have better operation, last longer and need to be replaced less often, and have less energy consumption, in addition to spreading fewer germs.

In view of its inventive design, the present invention is easy to use and even intuitive for a layman to use due to its clarity. The invention is simple. Their price is also low.

The invention will be further elucidated on the basis of the description of a preferred embodiment of the present invention with reference to the following figures: 14

BRIEF DESCRIPTION OF THE FIGURES

Figure 1 shows a schematic concept of a heat exchanger from the prior art.

2a-e schematically show a concept of a heat exchanger according to the invention;

Figure 3a shows various embodiments according to the invention and Figure 3b shows less suitable embodiments.

Figure 4 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 5 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 6 shows a schematic concept of a preferred embodiment of Figure 4.

Figure 7 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 8 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 9 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 10 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 11 shows a schematic concept of a preferred embodiment of Figure 2.

Figure 12 shows a schematic concept of a preferred embodiment of Figure 2.

DETAILED DESCRIPTION OF THE FIGURES

Figure 1 shows a prior art device with heat exchanger (WTW) (5) with an inlet of outside air (1), an inlet of inside air (3), an outlet of outside air (4), an outlet of inside air (2) , Where the heat exchanger always gains energy, ie is always active (see figure 1). In this configuration, exhaust over the heat exchanger takes place. The heat exchanger is a so-called cross-flow exchanger (5) as used, for example, by JE-Stork Air. Outside air (6) flows into a residential area, in a building, via the supply inlet (1) to the supply outlet (4). Indoor air (7) flows out of the living room, in a building, through the outlet inlet (3) to the outlet outlet (2). Via the WTW cross heat exchanger (5), energy is supplied in the indoor air (7) to the outside air (6).

Figure 2a shows a general concept of a device with (cross-flow) heat exchanger (5) according to the invention with an inlet of outside air (1), an inlet of inside air (3), an outlet of outside air (4), an outlet of inside air (2), a warm interior (7) and a cold exterior (6). Herein a substantially separated portion for cool air is drawn on the left, and a substantially separated portion for warm air is drawn on the right. This heat exchanger has a considerably higher efficiency, typically from more than 70% to as much as 95% or more. In this example, the heat exchanger contains one air / air heat exchanger, such as one that is typically used, and four liquid / air heat exchangers. In this setup the supply of air goes vertically and the discharge goes horizontally.

The thick black lines are seals that direct the air flow. A VLW (Liquid Air Exchanger) is connected to all four supply (1 and 2) and discharge (3 and 4) inlets (1 and 3) and outlets (2 and 4). In each VLW, 9a to 9d, temperature (T ° C) and relative humidity sensors (RV) are integrated. Two liquid circuits with three tubes are integrated in every 20 VLW, so six in total. These are chosen so that maximum and even energy transfer takes place. In an example, the liquid flow is pumped around between VLW 9c and VLW 9b, then energy in the inflowing indoor air (7) can be delivered directly via the discharge inlet (3) to the outside air (6), which flows out via the supply outlet (2) . In an example, the liquid flow is pumped proportionally from 9c to 9a so that the WTW (5) does not condense and / or freeze. In one example, hot or cold process water is pumped proportionally through 9b so that heating or cooling can take place.

A further example (Figure 2b) concerns a cross-flow exchanger 30 (5), VLWs 9a to 9d, temperature (T ° C) and relative humidity sensors (RV), as applied in Fig. 2a (previous slide). A diagonal entry may be necessary in certain situations, such as where horizontal and / or vertical is not possible. Preferably, angles at VLW 9a and 9c are shielded to cause the air to move away a longer 16 to absorb more energy.

It is possible to pump CV process fluid through VLW 9b, to send the return fluid flow proportionally through VLW 9a, so that the HRV (5) does not condense and / or freeze in moderate cold.

5 It is possible to pump CV process fluid through VLW 9a, so that the HRV (5) does not condense and / or freeze in extreme cold.

It is possible to circulate process water between VLW 9a to 9d, in which case no energy transfer takes place. The HRV is in "bypass" mode.

A further example (Figure 2c) concerns a cross-flow exchanger 10 (5), VLWs 9a to 9d, temperature (T ° C) and relative humidity sensors (RV), as used in Fig. 2b. Diagonal entry and exit may be necessary in certain situations where horizontal and / or vertical is not possible. Angles at VLW 9a and 9c are preferably shielded to allow the air to be removed a longer time to absorb more energy.

It is possible to pump CV process fluid through VLW 9b, to proportionally control the return fluid flow through VLW 9a, so that the HRV (5) does not condense and / or freeze in moderate cold.

A further example (Figure 2d) relates to a counterflow exchanger (8) with a high efficiency of up to 96%. The sketched WTW is 20 from Brink Climate Systems, Type Renovent HR 4/0 R Medium. The thin plastic plate version can ventilate up to 300 m3 / hour.

The present device typically has a metal, such as stainless steel, or plastic casing, preferably double walled. Typical dimensions are (W x H x L) 20 cm x 30 cm x 200 cm. Depending on the need for cooling / heating, available space, for example in a cavity, dimensions can be adjusted.

In one example, the present device comprises an isolated or uninsulated hydraulic module with pump, seal, thermometer and connectors. Typically, the heat exchanger has a cooling capacity of 600 W -30 5 kW, or equivalent a heating capacity. The device is preferably applicable under extreme conditions and in a wide temperature range, such as -15 ° C- ° 70 C. The operating pressure is, for example, from 100-1000 kPa (1-10 bar) (liquid side). The air displacement is in the order of 10-1000 m3 / h, per 17 units. Optionally, the device includes one or more of a filter, a speed controller, a temperature indicator, a temperature controller, and a time switch.

The device can also contain an LED indication for the company status 5. A temperature switching hysteresis, for example of 5 degrees K or less, may also be present. The device can also have a setting range, for example from 15 ° C to 60 ° C, such as by a potentiometer. The device can also be connected to a controller, for example with a switching hysteresis, optionally individually groupable, wherein set and current values can be visualized on a display. Optionally, data can be stored in a log file.

Figure 2e shows a general concept of a liquid-air heat exchanger. Typically, 4 of these heat exchangers are included in the present device, as shown in the preceding figures. Typical dimensions are 10 cm (231) by 10 cm (232) by 388 mm (233). A fluid tube has an outside diameter (a) of 8 mm and an inside diameter (b) of 6 mm. The cooling plates have a thickness of approximately 2 mm. 92 cooling plates are provided in this example.

Figure 3a shows a concept of a device with heat exchanger and liquid / air exchangers 9a-9d according to the invention. This essentially results in the effect described in this application.

Figure 3b shows a concept of a device with heat exchanger and liquid / air exchangers 9a-9d, with which only incomplete operation is obtained, i.e. not all advantages according to the invention are obtained.

Figure 4 shows a concept of a device with a heat exchanger (5) according to the invention with an inlet of outside air (1), an inlet of inside air (3), an outlet of outside air (4), an outlet of inside air (2), a cold inside (7) and a cold outside (6). The device is shown for a situation where substantially only ventilation must be provided. Herein a substantially separated portion for cool air, drawn on the left, and a substantially separated portion for likewise cold air, is drawn on the right. The incoming and outgoing air flows have a comparable 18 (cold) temperature, which can still differ slightly from each other. This heat exchanger is now more or less in the neutral position, and has a considerably higher efficiency, typically from more than 70% to as much as 95%. In this example, the heat exchanger comprises one air / air heat exchanger, such as one that is typically used, and four liquid / air heat exchangers. Furthermore, all four liquid / air heat exchangers are looped through in series. Looping takes place because the device comprises valves, which valves are set such that the heat exchangers are effectively looped through. This example preferably also comprises one or more pumps (8) for circulating liquid 10 present in the heat exchanger.

Figure 5 shows a concept of a device with a heat exchanger (5) according to the invention with an inlet of outside air (1), an inlet of inside air (3), an outlet of outside air (4), an outlet of inside air (2), a warm inside (7) and a cold outside (6). The device is shown for a situation where essentially only heat exchange must be provided. Herein a substantially separated portion for cool air, drawn on the left, and a substantially separated portion for likewise cold air, is drawn on the right. The incoming and outgoing air flows have a comparable (cold) temperature, which can still differ slightly from each other. This heat exchanger is now more or less in the neutral position, and has a considerably higher efficiency, typically from more than 70% to as much as 95%. In this example, the heat exchanger contains one air / air heat exchanger, such as one that is typically used, and four liquid / air heat exchangers. Furthermore, all four liquid / air heat exchangers are looped through in series. Looping takes place because the device comprises valves, which valves are set such that the heat exchangers are effectively looped through. Preferably, this example also comprises two or more pumps (8,9) for circulating liquid present in the heat exchangers. At least one pump is pumping liquid around a cold part of the device, while at least one pump is pumping liquid around a warm part of the device. In other words, there is at least one pump on the inside and at least one pump on the outside. The number of pumps is determined by, among other things, the desired capacity in terms of heat exchange and volume / hour.

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Figure 6 shows a concept of a device with a heat exchanger (5) according to the invention with an inlet of outside air (1), an inlet of inside air (3), an outlet of outside air (4), an outlet of inside air (2), a warm inside (7) and a cold outside (6). The device is shown for a situation where substantially only heat exchange must be provided, in combination with heating, for example by a central heating (10). Herein a substantially separated portion for cool air, drawn on the left, and a substantially separated portion for likewise cold air, is drawn on the right. The incoming and outgoing air flows have a comparable (cold) temperature, which can still differ slightly from each other. This heat exchanger is now more or less in the neutral position, and has a considerably higher efficiency, typically from more than 70% to as much as 95%. In this example, the heat exchanger contains one air / air heat exchanger, such as one that is typically used, and four liquid / air heat exchangers. Furthermore, all four of the liquid / air heat exchangers are looped through in series with each other. Looping takes place because the device comprises valves, which valves are set such that the heat exchangers are effectively looped through. This example preferably also comprises two or more pumps (8.9) for circulating liquid present in the heat exchangers, for example with a capacity of 50 ml / sec-250 ml / sec. At least one pump is pumping liquid around in a cold part of the device, while at least one pump is pumping liquid around in a warm part of the device. In other words, there is at least one pump on the inside and at least one pump on the outside. The number of pumps is determined by, among other things, the desired capacity in terms of heat exchange and volume / hour. Furthermore, this device is provided with a heating system, such as a central heating (central) (10). The central heating is connected to the heat exchanger on the inside (shown in the figure on the right). For optimum operation, this device preferably also comprises at least one temperature sensor (12) for measuring the temperature. The temperature at one or more locations can thus be determined, and also the temperature difference between the one or more locations. The device preferably further comprises a control for controlling the heat exchange, pump power and air flow, and as a result thereof indoor temperature and ventilation. In this configuration, cold outside air is preheated with escaping inside air.

Figure 7 shows a schematic concept of a preferred embodiment of Figure 2. A pump is furthermore provided here, and the CV is coupled to the liquid / air heat exchangers 9a and 9b. Heat exchangers 9b and 9c on the one hand and 9b and 9a on the other hand are also interconnected. Outside air can thus be preheated in extreme cold and / or humidity. This prevents freezing.

Figure 8 shows a schematic concept of a preferred embodiment of Figure 2. Two pumps are furthermore provided here. Furthermore, a cooling (13) is coupled to heat exchangers 9c and 9b. Heat exchangers 9b and 9c on the one hand and 9d and 9a on the other hand are also interconnected. The outside contains warm air that is cooled in this way. Warm outside air is returned. In an example, furthermore, RV and temperature sensors 15 are integrated.

Figure 9 shows a schematic concept of a preferred embodiment of Figure 2. Furthermore, a cooler (13), a heater (10) and a controller (15) are provided therein. A bus system (16) is provided for communication between individual components. Two fans are also present in an example. All benefits mentioned in the application are obtained and problems are overcome. For example, the system only fits in the cavity above a (window) frame. Supply of outside air takes place via the cavity. Inside air takes place through an opening above the window frame. Furthermore, a controller provides the indoor climate by means of cooling and heating, in terms of, for example, temperature and air humidity.

Figure 10 shows a schematic concept of a preferred embodiment from Figure 2. This includes two fans (17) which, in the case of sufficient width, are placed in line and axially with respect to the WTW.

Figure 11 shows a schematic concept of a preferred embodiment from Figure 2. This includes two fans (17) which, in the case of sufficient height, are perpendicular to the axis of the HRV.

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Figure 12 shows a schematic concept of a preferred embodiment of Figure 2. The HRV system is closed by closing valves. A fan is active in this example, i.e. in operation, the other is passive. This cleanses the passive fan and any filters 5 present therein. Turning the situation around cleans the first fan.

The above description referring to preferred embodiments shown in the figures has no limiting influence on the scope of the present invention, which is defined by the following claims.

10

Claims (15)

A device for providing hot and / or cold air provided with at least two inlets and at least two outlets, wherein at least one first inlet and at least one first outlet are in a first space and wherein at least one second inlet and at least one second outlet are in a second space, at least one fan, preferably at least one air / air heat exchanger for exchanging energy between hot and cold air, the at least one fan being adapted to supply air from moving an inlet 10 to an outlet, wherein an at least one first inlet, an at least one second outlet, and the optional at least one air / air heat exchanger together form a functional first connection between the second space and the first space, a at least one second inlet, an at least one first outlet and the optional at least one air / air heat exchanger together a functional one form a second connection between the first space and the second space, the device preferably having at least four substantially separated compartments, each compartment comprising at least one inlet or at least one outlet, the first connection comprising at least one liquid / air heat exchangers in the inlet and in the outlet, and wherein preferably the second connection comprises at least one liquid / air heat exchangers in the inlet or outlet, preferably at least one liquid / air heat exchangers in the inlet and in the outlet includes. Device as claimed in claim 1, further provided with at least one air flow controller, preferably provided with software. 3. Device as claimed in claim 1 or 2, further provided with one or more of a temperature sensor for measuring temperature in an air stream, a humidity sensor for measuring relative humidity in an air stream, a time sensor, at least one filter, such as a electrostatic filter, a CO2 sensor, a system clock, and a temperature controller. Device as claimed in one or more of the foregoing claims, comprising at least two fans, which fans are functionally connected to each other at a closed inlet and a closed outlet. Device as claimed in one or more of the foregoing claims, further provided with one or more valves for regulating air flow, for example arranged for closing off an inlet or an outlet, and / or one or more valves for regulating fluid flow , for example arranged for closing a liquid / air heat exchanger, connecting a first liquid / air heat exchanger with a second liquid / air heat exchanger, connecting a liquid / air heat exchanger to a heater, connecting a liquid / air heat exchanger with a cooler, reversing a flow direction thereof, and combinations thereof. Device as claimed in one or more of the foregoing claims, wherein at least a first liquid / air heat exchanger is in connection with at least a second liquid / air heat exchanger, preferably each first liquid / air heat exchanger is in connection with every second liquid / air air heat exchanger. Device according to one or more of the preceding claims, further provided with one or more pumps for regulating fluid flow in a fluid / air heat exchanger. 8. Device as claimed in one or more of the foregoing claims, wherein the at least one heat exchanger comprises a liquid. Device as claimed in one or more of the foregoing claims, wherein the at least one liquid / air heat exchanger has an effective surface of at least 1 m2 per meter of heat exchanger, more preferably at least 2 m2 per meter, even more preferably at least 5 m2 per meter , such as at least 10 m2 per meter. An installation for providing hot and / or cold air comprising a device according to one or more of the preceding claims, further comprising one or more elements of a cooler, a heater, such as a central heating, a connection system for communication between elements and device, and a housing. A method for providing hot and / or cold air comprising the steps of providing outside air to a device according to one or more of claims 1-9, directing outside air through the device to obtain air heated or not heated, and providing heated or unheated air to an interior space that includes indoor air. 12. Method for providing hot and / or cold air comprising the steps of providing indoor air to a device according to one or more of claims 1-9, guiding indoor air through the device to obtain 10 air cooled or not cooled and providing air cooled or not cooled to an outdoor space that includes outdoor air. A method comprising a simultaneous combination of the steps according to claims 11 and 12. Use of an apparatus according to one or more of claims 1-9 and / or an installation according to claim 10 for at least one of refreshing air, preheating outdoor air, cleaning air, removing and / or killing germs, reducing noise, cleaning filters present therein, controlling the device without load, drying a cavity, increasing the insulation value of a cavity, heating a heat reservoir, cooling a room, preheating water such as central heating water and tap water, 15. Method for cleaning a device according to one or more of claims 1-9 and / or an installation according to claim 10, the steps of closing valves to form an open connection between a first and second filter, comprising making a second filter passive, for example by switching off a motor thereof and, in the case of an electrostatic filter, de-energizing it, and running a motor of a first filter and thereby cleaning the second filter.