EP2594709B1 - Air conditioning device - Google Patents

Description

The invention relates to an air conditioner, in particular a tent air conditioner, comprising a condenser part containing at least one condenser, a compressor and a first fan, and an evaporator part containing at least one evaporator and a supply air fan, wherein the condenser part is separated from the evaporator part by a partition wall.

The basic components of most air conditioning units are the cooling circuit with compressor, refrigerant, evaporator, condenser, expansion valve and fan. Air conditioning units can be designed as complete units, ie in one piece, wherein the capacitor module or part and evaporator module or part form a unit. In mobile air conditioners, such as these are used for the air conditioning of tents, corresponding air conditioners in the condenser part and divided by this partitioned by a partition evaporator part are divided. The evaporator part has a fan, by means of which air is drawn through an air inlet through the evaporator and then supplied as supply air to the room to be conditioned. Corresponding air conditioning units are compact.

In order to heat under extreme climatic conditions by the air conditioner to be air conditioned space, an electrically operated auxiliary heater is used in the prior art.

Of the DE-U-203 13 048 shows an air conditioner, which is divided into a capacitor part or module and a vaporizer part or module, the device can be used both as a complete device as well as a split device.

The DE-A-102 18 157 refers to a fuel heater with a heat exchanger intended for a vehicle. In this case, the heat exchanger is arranged on the pressure side of a fan on the air conditioning system of the vehicle.

An air conditioning device for the interior of a vehicle is the EP-A-11 609 641 refer to. This has a heat exchanger, which is designed as a fuel-operated air / air heat exchanger.

In the DE-A-10 2006 002 233 a heating and air conditioning system with additional heating is described. The air conditioning system comprises a cooling and heating heat exchanger and an additional unit operable with fuel, which is arranged in a part of the cold air volume, which is associated with an air flow control means, which leads an air flow either via the Zusatzheizaggregat or passes the Zusatzheizaggregat.

The EP-B-1 623 858 has an air conditioning system for a room to be air conditioned in a recreational vehicle to the object. The air conditioning system includes a heating device and a cooling device, wherein air is selectively supplied to the heating device or the cooling device.

The present invention is based on the object, an air conditioner of the type mentioned in such a way that this mastered extreme climatic conditions, in particular may be suitable, for. Ambient temperatures between - 32 ° C and + 60 ° C cover.

According to the invention the object is achieved by an air conditioner with the features of claim 1. Preferred embodiments are defined in claims 2-13.

With usual connection capacities of a maximum of 9 kVA heating capacities of more than 7,200 W can be achieved. Higher performance is not possible due to the connection performance. Due to the teaching of the invention, in particular heating powers are to be achieved, which can not usually be achieved without a significant increase in the overall volume of the air conditioner is required. A compact air conditioning unit is to be provided which can cool and heat to the required extent.

In order to achieve the object, the invention essentially provides that a fuel heater through which a heat transfer medium flows is arranged in the condenser part and that a first heat exchanger through which the heat transfer medium flows is arranged in the evaporator part.

In this case, provision is made in particular for the heat carrier to flow through a preferably flat-quadrilateral buffer store which is arranged with a first section in the condenser part or below it and with a second section in the evaporator part and below it.

According to the invention, a fuel heater is integrated in the condenser part, which enables heating capacities which can exceed that of electric heaters by a common factor at conventional connection powers. Services of e.g. 30 kW are readily possible, without the capacitor part is increased in volume. By separating the fuel heater from the first heat exchanger and its arrangement in the evaporator part, the air sucked in via the fan can flow through both the evaporator and the heat exchanger so as to be able to condition a space, in particular a tent, over a wide temperature range to the required extent, in particular over a range between - 32 ° C and + 60 ° C ambient temperature.

In order to prevent a clocking of the fuel heater, a buffer memory is provided, which is flowed through by the heat exchanger - in the return from the first heat exchanger. Regardless, the compactness of the device is maintained, since the buffer memory is arranged in sections in the bottom region of both the condenser part and the evaporator part, preferably below the condenser part and the evaporator part surrounding housing. The sectional arrangement both in the region of the condenser part and the evaporator part, a simple piping is possible, which ensures the desired compactness. In particular, the buffer should have a volume of 30 dm3.

The second heat exchanger, via which the heat of the fuel heater is transferred from the heat carrier such as water-glycol mixture is connected via a first line to the inlet opening of the first heat exchanger, wherein a first line section along the first section and a second line section along the second Section of the buffer memory runs, wherein from the outlet opening of the first heat exchanger, a second line is connected, which is connected to the second portion of the buffer inlet opening arranged, whose connected via a third line to the second heat exchanger outlet opening from the first portion of the buffer memory.

The arrangement and type of connection in this way ensures the desired compactness.

Furthermore, the invention is characterized in that the air conditioner comprises a device housing having a cuboid shape that extends along two adjacent side surfaces of the device housing each having a cuboid portion of the capacitor that adjacent to one of the sections of the compressor and adjacent to the other Section is arranged an expansion tank of the fuel heater and that the housing of the fuel heater between the compressor and the expansion tank and is arranged with its longitudinal axis inclined to the sections of the capacitor spanned planes. As a result of this arrangement, optimal space utilization in the condenser part can be achieved without an increase in volume being required compared to air conditioning units which do not have a corresponding fuel heater.

The device housing should be mounted swinging on a transport plate and connected thereto, wherein the transport pallet preferably has stacking pockets.

The device housing itself preferably has a frame with head-side webs, which have cutouts for receiving stacking pockets of a further transport pallet, wherein the cut-outs are cut by normals of the stacking pockets of the transport pallets. Thus, several air conditioners can be stacked. Consequently, a space-saving transport is possible.

The expansion vessel should be arranged between a line leading from the second heat exchanger and into the first line section of the line leading to the heat carrier and / or a pump conveying the heat carrier should be arranged in a line section leading from the buffer tank to the second heat exchanger.

All these measures ensure compactness.
The fan sucking the air to be conditioned should be a radial fan and should be located between the partition wall and the first heat exchanger.

The evaporator part bounding end wall of the device housing has at least one opening or a connection for air to be sucked. Along an opposite, the condenser part frontally bounding wall goes out connected to the fuel heater exhaust pipe, which is removable for transport.

The air conditioner itself can be operated as a recirculation unit, as an outside air unit and / or in mixed operation.

Typical dimensions of the device can be: width approx. 1,800 mm, depth approx. 980 mm, height approx. 885 mm.

In summary, the air conditioner according to the invention is described as follows, wherein the highlighted features do not necessarily have to be used in combination. The air conditioner offers a universal application and can be used in particular for civil protection. The air conditioner can be operated both as recirculation unit with defined fresh air proportion, as pure outdoor air unit (100% fresh air) or as pure recirculation unit (100%). The connection to a room to be air-conditioned, such as a tent, takes place via a hose system. The air conditioner is technically like that designed to operate at ambient temperatures between -32 ° C and + 60 ° C. The air conditioner, which typically has dimensions of 1,800 mm × 885 mm × 980 mm, consists of a condenser part and an evaporator part and is swing-mounted on a transport pallet including a stacker pocket. A stackability is given. Capacitor and evaporator part are thermally separated from each other by an insulating partition and connected only by the refrigeration and Wärmeträgerkreisverrohrung.

The condenser section contains both the refrigeration technology (such as condenser fans, heat exchangers, collectors, dryers, refrigeration piping, valves and safety devices) and the necessary heating technology (fuel heater, expansion vessel, heating pump, electronics, piping and exhaust pipe). In the evaporator section are the E-part, the fan (fan), the evaporator (for cooling) and the heat transfer (fuel heating), control elements and piping for the cooling and heating circuit. Below the housing of the air conditioner, a buffer memory is mounted, which prevents a clocking of the fuel heater. The buffer memory, which has a cuboid geometry, should have a volume of approximately 30 dm3.

The air conditioner can be controlled via a pluggable control panel with thermostat. All functions of the system can be specified via the control panel. Due to the preselectable setpoint temperature, the air conditioner will automatically heat or cool accordingly. Error messages in the event of a fault can be signaled to the keypad as a group fault.

The resulting exhaust gases during fuel heating are discharged via an attached to the condenser part end face bounding outer wall of the housing exhaust pipe to the environment. The exhaust pipe is removable. The exhaust gases can not get into the air-conducting part of the evaporator, so that the heat of the fuel heating resulting from the combustion of the fuel is transferred via a heat exchanger to a heat transfer medium and this in turn is discharged via a heat exchanger on the evaporator side to the supply air. There is an indirect heating.

The system is supplied with power via a mains cable. In this case, operation via a conventional power grid or a generator can take place.

To supply the fuel heater, a tank is used, which is placed outside the unit and connected to the heater via a quick release. The fuels used are diesel and heating oil. A connection e.g. a 20 1 canister or a 200 1 barrel is possible.

Further details, advantages and features of the invention will become apparent not only from the claims, the features to be taken from them-alone and / or in combination-but also from the following description of a preferred embodiment to be taken from the drawing.

Fig. 1

eine dimetrische Darstellung eines erfindungsgemäßen Klimagerätes,

Fig. 2

eine Seitenansicht des Klimagerätes gemäß Fig. 1,

Fig. 3

eine Vorderansicht des Klimagerätes gemäß Fig. 1,

Fig. 4

eine Rückansicht des Klimagerätes gemäß Fig. 1,

Fig. 5

eine Draufsicht auf das Klimagerät gemäß Fig. 1,

Fig. 6

eine Prinzipdarstellung des Innenaufbaus des Klimagerätes gemäß Fig. 1 in Draufsicht und

Fig. 7

ein Detail der Fig. 6.

Show it:

Fig. 1

a dimetric representation of an air conditioner according to the invention,

Fig. 2

a side view of the air conditioner according to Fig. 1 .

Fig. 3

a front view of the air conditioner according to Fig. 1 .

Fig. 4

a rear view of the air conditioner according to Fig. 1 .

Fig. 5

a plan view of the air conditioner according to Fig. 1 .

Fig. 6

a schematic diagram of the internal structure of the air conditioner according to Fig. 1 in plan view and

Fig. 7

a detail of Fig. 6 ,

The figures refer to an air conditioner 10, which is suitable to be used in a range between -32 ° C to 60 ° C ambient temperature, with a very compact design is given. The air conditioner has a cuboidal housing 12 which is pivotally connected to a transport pallet 14 with forklift pockets 16, 18. The housing 12 has along the longitudinal sides of a square profiles consisting of U-frame 20, which is connected at the top via profiles 22, 24. The head side extending profiles 22, 24 such as angle iron have notches 26, 28, 30, 32, which are cut by outgoing from forklift pockets 16, 18 normals. This gives the possibility to stack at least two corresponding air conditioners 10, wherein the upper air conditioner must take a clear position due to the notches 26, 28, 30, 32 to the lower air conditioner.

The air conditioner according to the invention consists of a condenser part 34 and an evaporator part 36, which are separated by a thermally insulating partition wall 38.

As essential components are located in the condenser part 34 two each surrounded by a cuboid housing housing condenser sections 40, 42, a condenser fan 44 through which an existing opening 48 in the side wall 48 air is drawn, a compressor 50, a fuel heater 52, a arranged in the heat transfer circuit of the fuel heater 52 expansion tank 54, a suction pressure regulator 56 and an electrical part (E-part) 58 for the fuel heater 52nd

The fuel heater 52, which may have a structure such as a heater and has a cylindrical housing 60 is connected via a quick release 62 with an outside of the air conditioner 10 can be set up, not shown tank or canisters for supplying fuel.

From the fuel heater 52 is a line 64, which opens into an exhaust pipe 68 which extends along the condenser 34 bounding end wall 67 and from which the exhaust pipe 64 is removable. This takes place when the air conditioner 10 is transported.

In the evaporator section 36, an evaporator 70 and this downstream of a first heat exchanger 72 are arranged, which is flowed through by the fuel heater 52, by a heat transfer medium flowing through a second heat exchanger, not shown. Between the thermally insulated partition wall 38 and the first heat exchanger 72, a centrifugal fan 74 is arranged, via which air sucked in the end face 76 of the housing 12 is supplied to a space to be conditioned via an air outlet opening. The air outlet opening can be connected via a hose to the room.

Depending on the operation of the air conditioner 10, outside air, exhaust air or a mixture of exhaust air and outside air can be sucked in via the air inlet opening. Between the evaporator 70 and the end wall 76, a two-stage filter 78 is arranged in the embodiment.

Below the housing 12 and protected by the transport pallet 14 or sections thereof, a buffer container 80 is arranged, which extends in sections both below the condenser part 34 and below the evaporator part 36.

The buffer container 80 has a parallelepiped shape and is integrated in the circulation of the heat carrier such as glycol-water mixture of the fuel heater 52 in order to avoid a timing of the fuel heater. The buffer container 10 has a connection 81, via which the heat carrier can be discharged.

As is clear from the Fig. 6 results, the fuel heater 52, that is, the housing 60 extends from the partition wall 38 in the direction of the capacitor housing 40, which extends along the side wall of the housing 12, in the Fig. 6 runs at the top of the drawing. The housing 60 further extends between the compressor 50 and the expansion tank 54.

By positioning the housing 60 of the fuel heater 52, an optimal utilization of the interior of the condenser part 34 takes place, resulting in a compact unit.

Separated from the fuel heater 52, the first heat exchanger 72 is disposed in parallel with the evaporator 70. To flow through the first heat exchanger 72 through the heated by the fuel heater 52 heat transfer from the heat exchanger of the fuel heater 52, which is also called the second heat exchanger, a line which extends below the housing 12 and is guided in the embodiment of the buffer tank 80 along namely with a first line section 82 along the portion 84 of the buffer tank 80, which is arranged below the condenser part 34 and with a second section 86 along the second portion 88 of the buffer tank 80, which extends below the evaporator part 36. The second section 86 then leads to the heat exchanger 72. After flowing through the heat exchanger 72 is the Heat transfer medium via a line, not shown, fed to the buffer tank 80 via an inlet port 90 which is disposed below the evaporator portion 36. From an outlet opening 92, the heat transfer medium is then fed to the second heat exchanger, which is located below the housing 60 of the fuel heater 52. In addition, there is a pump 61 in the line.

The expansion tank 54 is disposed between the heat exchanger of the fuel heater 52 and the first portion 82 of the heat carrier leading line.

The arrangement in question results in a very compact design, so that the air conditioner according to the invention compared to those that do not have a fuel heater, the volume must not be increased or only to a small extent.

The controller 100 of the air conditioner 10 is located in the evaporator section 36. About a control panel 102, the air conditioner 10 is operated. The control unit 102 is pluggable and can be controlled by a thermostat, not shown. All functions of the air conditioner 10 can be specified via the control unit 102. By a preselectable setpoint temperature, the air conditioner 10 is automatically heating or cooling. Error messages in the event of a fault are signaled to the operating unit 102 as a collective fault.

The power supply of the air conditioner via a power cord, a conventional power grid or a generator can be used.

Claims (13)

1. Air-conditioning system (10), in particular a tent air-conditioning system, comprising a condenser part (34) containing at least one condenser (40, 42), a compressor (50) and a first fan (44), and an evaporator part (36) containing at least one evaporator (70) and a fresh air fan (74), said condenser part being separated from the evaporator part by a partition wall (38),
   wherein
   a fuel heater (52) through which a heat transfer medium flows is arranged inside the condenser part (34) and a first heat exchanger (72) through which the heat transfer medium flows is arranged inside the evaporator part (36).
2. Air-conditioning system according to claim 1,
   wherein
   the heat transfer medium flows through a preferably block-shaped heat accumulator (80) which is arranged with a first section (84) inside the condenser part (34) or underneath the latter and with a second section (88) inside the evaporator part (36) or underneath the latter.
3. Air-conditioning system according to at least one of the preceding claims,
   wherein
   the air-conditioning system (10) has a system housing (12) in block form, one section each of the condenser (40, 42) extends along two adjoining walls (67), the compressor (50) is arranged adjacent to one of the sections and an expansion tank (54) of the fuel heater (52) is arranged adjacent to the other section, and the housing (60) of the fuel heater is arranged between the compressor and the expansion tank and with its longitudinal axis at an angle to the planes generated by the sections of the condenser.
4. Air-conditioning system according to at least claim 3,
   wherein
   a pump (61) conveying the heat transfer medium is arranged between the partition wall (38), the expansion tank (54) and the housing (60) of the fuel heater (52).
5. Arrangement comprising an air-conditioning system according to at least one of the preceding claims and a transport pallet,
   wherein
   the system housing (12) is elastically mounted on a transport pallet and is connected thereto.
6. Arrangement comprising an air-conditioning system according to at least claim 5,
   wherein
   the transport pallet (14) has fork-lift pockets (16, 18), the system housing (12) has a frame with top-side profiled elements (22, 24) having cutouts (26, 28, 30, 32) for receiving fork-lift pockets of a further transport pallet, said cutouts being intersected by nonnal lines extending from the fork-lift pockets of the transport pallet.
7. Air-conditioning system according to at least claim 2,
   wherein
   the fuel heater (52) has a second heat exchanger connected via a first line to the inlet opening of the first heat exchanger (72), with a first line section (82) passing along the first section (84) of the heat accumulator (80) and with a second line section (86) passing along the second section (88) of the heat accumulator, and a second line extends from the outlet opening of the first heat exchanger and is connected to an inlet opening (90) of the heat accumulator arranged in the second section (88) of the heat accumulator (80) whose outlet opening (92), connected via a third line to the second heat exchanger, extends from the first section (84) of the heat accumulator.
8. Air-conditioning system according to at least claim 7,
   wherein
   the expansion tank (54) is arranged between a section of the line carrying the heat transfer medium extending from the second heat exchanger and merging into the first line section (82), and/or the pump (61) conveying the heat transfer medium is arranged in a line section leading from the heat accumulator (80) to the second heat exchanger.
9. Air-conditioning system according to at least one of the preceding claims,
   wherein
   the fresh air fan (74) is a radial fan and is arranged between the partition wall (38) and the first heat exchanger (72).
10. Air-conditioning system according to at least one of the preceding claims,
    wherein
    the partition wall (38) thermally separates the condenser part (34) from the evaporator part (36).
11. Air-conditioning system according to at least claim 3,
    wherein
    the evaporator part (36) has an air intake opening in the end wall (76) of the system housing (12) limiting the evaporator part, and a detachable exhaust pipe (68) connected to the fuel heater (52) passes along the opposite end wall (67) of the system housing (12) limiting the condenser part (34).
12. Air-conditioning system according to at least claims 2 and 3,
    wherein
    the heat accumulator (80) is arranged underneath the system housing (12).
13. Air-conditioning system according to at least one of the preceding claims,
    wherein
    the air-conditioning system (10) can be operated as a recirculated-air system, as an outside air system and/or as a mixed-air system.

Images