DE2166940A1 - VENTILATION UNIT - Google Patents

Description

The invention relates to a ventilation device in -b'or-ra a prefabricated installation unit.

The object of the invention is to provide a ventilation device that can be suspended from a ceiling or between this and a ceiling formwork to create in modular design, which can be reduced to a minimum Workload in or through an opening in the ceiling formwork can be attached through it and is easily accessible for maintenance and servicing work at any time.

The noise © generated in known ventilation devices by the compressor and other devices used in them was caused by private use of such devices in apartments or houses as well as especially when used in offices or workplaces are a considerable nuisance which in the latter case could seriously affect the performance and well-being of the employees. In contrast, the invention creates a ventilation device in which only weak noises and a total of ge force re Vibrations occur.

609848/0004

TELEPHONE (OSO) 22 28 62

TELEX Ο3-23 38Ο

TELESRAM (E ΜΟΜΑΡΛΤ

BATH ORIGINAL

2166340

In the case of ventilation devices that have been used up to now, this becomes the case when they are used for room cooling by acting as an evaporator Condensation water extracted from the air is collected in a collecting tray and drained from the device through pipes. Water is deposited on the outer surfaces of the collecting trough and the drainage pipes and then drips in the vicinity of the device, for example on the back of the ceiling formwork. This creates with known Devices often stain ceilings or floor surfaces. Avoiding such precipitation is extremely cumbersome with these devices and requires extensive precautions. In contrast, the ventilation device according to the invention is designed so that the air through the evaporator Water removed from their cooling is heated to such an extent that there is no moisture on the collecting pan and the drainage pipes in the form of dew precipitates, so that the extensive Precautions tin preventing precipitation can be omitted.

In the known ventilation devices, a special served with the compressor connected radiator tube, or a part DAAU of the condenser for cooling of the electric motor to cool the extracted gas prior to its use to some ^0C. For this purpose, a total of four pipes, namely an intake pipe, a delivery pipe and the coolant pipes, had to be connected to the compressor. If a different type of radiator pipe is used on the compressor, on the other hand, special ventilation must be provided around the compressor. The compressor used in the device according to the invention is designed as a rotary compressor, in which the delivery pipe and the suction pipe partially run in mutual contact or are guided into one another and are provided with heat-extinguishing walls, so that between the sucked in and the. promoted gas a heat exchange takes place and the latter is cooled ^{by a few 0 C before it is used to cool the electric motor.}

609846/0004 ^ D original

When the c / · ventilation device according to the invention is sunk into a ceiling, the air-JSin- and iV- -.'- 'sü-c are arranged in a leak opening and covered together by a diffuser or a screen, with λλΏδ for maintenance . Care apart from the mentioned no further cover openings need to be present.

When the ventilation device according to the invention is designed for hanging attachment, a box or housing is provided in its smock area, within which the main mechanical devices of the device are accommodated. Further devices are arranged on top of the edges or housings. Around the box is a ver ™ *

Different air ducts enclosing outer housing provided. This means that the device has an extremely leioliton structure, which makes it easier to attach the device, -'Ci ¹ OCh is nevertheless very stable

For the attachment of the usual ventilation devices, a mounting made of steel profiles must first be attached to the installation site, for example on the underside of a ceiling, in a laborious and time-consuming work. Dennr-Hinüber provides the invention with fastening devices for the outer housing of the ventilation device, which allow a cross-eyed installation and removal as well as rionage work on the device

Should the conditioned air flow in an earlier device, whose centrifugal fan only had one outlet in one direction, go in another direction; or be split, it has been divided by means of a dneten in the air guide angeox ⁴ baffle and deflected into another air guides in the desired direction. In contrast, according to a particular embodiment of the invention, the blower has a housing in the form of a letter "S" symmetrical in relation to a center line with two outlets running in different directions,

609846/0004

BATH ORIGINAL

2166 94

According to an advantageous embodiment of the invention, it is on a bracket intended for hanging the device on a ceiling, a connection plate for the required Water pipes and electrical supply lines provided.

In known ventilation devices of this type erb are due to dimensional deviations during assembly or position changes then there was tension in the water pipes. The training caused by the bending of the lines that occurs air bubbles and other disturbances make a uniform water flow difficult. To avoid such disadvantages is a special connection arrangement on the device according to the invention intended for the water pipes.

Furthermore, the invention creates a novel structure for the housing surrounding the fan used in the ventilation device. In common devices, the fan housing is usually in a spiral shape. It is mainly made of sheet metal and usually has a curly rim surrounding the inlet port. The processing of such sheet metal parts requires a lot of work, which makes the case very becomes expensive. If heating equipment is to be used on the outside of the housing If necessary, thermal insulation is also required. Since the inner surfaces of the fan are made anyway a hard material such as steel, no noise reduction can be achieved. It also complicates the exterior Spiral shape of the fan attaching other parts to it and installing the same. · The housing of the in the invention The blower used in the device is made of a strong, heat-insulating, solid foam with an excellent noise-dampening effect manufactured, so that the disadvantages mentioned above are avoided.

BATH ORIGINAL

9846/0004

.21669AO

In previous devices of this type, the cover panel or the diffuser is attached to the relevant opening by means of screws. This made changing or washing the im Device arranged filter as well as the maintenance of other parts of the device very time-consuming. In contrast, in An advantageous embodiment of the invention provides that the cover panel of the intended for hanging on the ceiling Ventilation device by means of an extendable articulated scissors, hinges attached to the side, attached to the panel Telescopic rods or by means of tension springs is attached to this, whereby the above-mentioned disadvantage is avoided. |

In conventional ventilation devices working on the principle of the heat pump, which are connected to a closed pipe system are connected, a balanced water flow is difficult to achieve. With such a training there is also the risk of overloading the compressor when the device is used for cooling, as well as when it is insufficient Flow of water through the freezing of what acts as a condenser when the device is used for heating Heat exchanger. For maintaining .a constant The circulating water flows through in the ventilation device operating on the principle of the heat pump according to the invention a flow regulator is provided. f

The invention is explained in more detail with reference to the embodiments shown in the drawing. Show in it:

1 shows a vertical sectional view of an embodiment of the ventilation device,

Fig. 2 is a cross-sectional view corresponding to the broken one Line H-II in Fig. 1,

60 9 8A6 / 00 0A ^ ad original

Pig. 3 is a schematic representation of the attachment of the Ventilation device on a step formed in a ceiling,

Pig. 4 to 6 different arrangements of air inlet and Leaving out the ventilation unit,

Pig. 7 is a schematic sectional view of another Embodiment of the ventilation device

i'ig. 8 to 13 different embodiments of an im Ventilation device used,

Ig. 14 to 16 different connection versions of the in the Ventilation device used rotary compressor, where Pig. 15 and 16 show known arrangements., And

Pig. 17 and 18 a flow controller used in the ventilation unit for circulating water *

That in Pig. 1 and 2 shown ventilation unit A contains a fan housing 1 with a _{fan wheel 2 accommodated therein, a fan motor 3 5,} a V / heat exchanger 4, a collector pan 5 for condensation water, with a drain pipe, which is effective when used for cooling purposes as an evaporator and when used for heating as a condenser 6, a compressor housing 7i in general a high pressure switch 8, a low pressure switch 9, a reversing slide 10, a rotary compressor 11, a. Coolant storage tank 12, and a V / arm exchanger 13 which is effective when used for cooling purposes as a condenser, a supply line 14 and a discharge line 15 for water serving as a heat transfer medium, an air filter 16, a diffuser in the form of a cover panel 17 and a baffle plate 18.. .

BATH ORIGINAL

609846/0004

Fig. 3 shows the attachment of an embodiment of the; Ventilation unit on a ledge or step in a ceiling. The device having an air inlet 44 and an air outlet 45 A is anchored in the ceiling B by means of holding brackets 47 Bolts 46 suspended and secured by nuts 48. A ceiling form 45 has an opening 50 which is covered by a diaphragm 49 containing the inlet opening 44. By removing the cover 49, the device accessible for installation and removal as a whole or for maintenance and care of its individual facilities.

In Fig. 4 to 6 different arrangements for the air inlets and outlets of the device are shown. The ventilation device A ■ ä sits in an opening 58 penetrating a ceiling formwork 59 and has an air inlet 60, an air outlet 61, a filter 62, a fan 63, an air chamber 64, air ducts 65, a cover panel 66 and an arrangement of partition walls

Fig. 7 shows a further simplified Ausführungsforra the Ventilation device. -In this version, an air filter 68 can be removed from device A or inserted into it, for what purpose the ceiling formwork 72 is penetrated by an opening 73. This also enables and removing the entire compressor housing 7 in the or

from the device (s) in place A. The Ge ™ rät is suspended from retaining screws 69 and has an air inlet 70 and an air outlet 71

In Figs. 8 to 13 different embodiments of fans used in the ventilation device are shown.

In the embodiment according to FIGS. 8 and 9, one is drivable on one Shaft 103 seated impeller 102 in a symmetrically S-shaped guide in relation to a center line

609 84 6/000 4

BATH ORIGINAL

housing 101 with mutually opposite directions open air outlets 104 housed.

In the embodiment according to Fig. 10 and 11, the guide housing is formed from an upper housing part 105 and a lower housing part 107. It has an air inlet 108 and in Outlets 104 offset from one another in height.

12 and 13 show an embodiment of a fan housing made of a foam, for example polystyrene, which is good heat insulating with sufficient strength and has sound-absorbing properties. The fan housing 109 has an air inlet 111 in a side wall 110 beveled land and a shaft bore 112 and a radial outlet 113 on the other side wall.

The advantageous arrangement of the compressor in the design of the ventilation device can be seen from FIGS. 14 to 16. Known designs are shown in FIGS. 15 and 16 for this purpose. In the embodiment according to FIG. 15, the line system of the compressor contains a suction line 131? a delivery line 132 and intercooler lines 133 and 134, so a total of four connections. The lines 133-134 connect the compressor 130 via a condenser 126 to the drive motor 135. In the embodiment according to FIG is to be brought about with cooling air. In the new embodiment according to FIG. 14, on the other hand, the suction line and the delivery line run in intimate mutual contact in places. They are preferably plugged into one another and each have walls that conduct heat well, so that a heat exchange can take place between the sucked in and the pumped gas and the pumped gas is cooled ^{by a few ° C. before it enters the cooling system of the electric motor 135.} The gas flow is here

BATH ORIGINAL

609846/0004

So from the intake pipe 139 via the compressor 130, which as Conveyor pipe 138 designed as a jacket tube, the inlet 141 to the cooling system of the electric motor 135 and the outlet 140 same to delivery line 142.

In Figs. 17 and 18 is the one used in the ventilation device Flow regulator for the water circulation sank. This receives a certain flow regardless of external pressures upright. The water flow runs from a supply line 143 via the, in some cases, as an evaporator or effective as a condenser heat exchanger 13 to the outlet line 144. An intermediate piece -145 is inserted into the supply line 143. This includes a guide sleeve 146 with a arranged therein, surrounded by passages 151 guide 149. In this the shaft 148 of a valve body is guided, between its head 147 and the guide 149 a Compression spring 150 is placed on the shaft. As the valve head 147 tapers in the direction of flow, shifts it corresponds to increased pressure on the inflow side and! large flow against the action of the spring 150 to the right, whereby the passage between the valve head 147 and the guide sleeve 146 narrowed and the Durchflußirumg so reduced. If, on the other hand, the flow decreases with reduced pressure on the inflow side, the shifts Spring 150 moves the valve body to the left, so that the passage between the head 147 and the sleeve .146 increases and the flow increases. Such a device can also be effective for several one behind the other Use ventilation equipment.

BATH ORIGINAL 809846/0004

Claims (6)

Claims 1. Ventilation device in the form of a prefabricated installation unit, characterized in that there is a compressor (11) in a closed compressor housing (7) when it is used for cooling purposes as a condenser and when using the device for heating heat exchanger (13) acting as an evaporator »contains a reversing slide valve (10) and a coolant container (12), that on the compressor housing a collective heat (5) for condensed water in connection with an occasional as Evaporator or heat exchanger (4) that acts as a condenser is provided so that an air filter (16) can be easily and removably arranged in the area of the compressor housing is that an easily attachable and removable diffuser screen (17) is available to hold the air filter and that in the device (A) the compressor housing, this one initially arranged fan (2), the air filter and the heat exchanger, which can be used as an evaporator or condenser are arranged so that they can be easily installed and removed and the device is can be fastened to the top plate (B) of a ceiling. 2. Ventilation device according to claim 1, characterized in that the air filter (68) easily through the opening (73) in the ceiling formwork "(72) can be installed and removed is. 3. Ventilation device according to claim 1 or 2, characterized in that it can be ^{fastened hanging between an upper ceiling panel (B) and a ceiling formwork (7 2} ) on the upper ceiling panel, an opening (72) formed for this purpose in the ceiling formwork through the diffuser screen (70, '71) is covered. 609846/0004 ⁸ ^ D original 4-. Ventilation device according to one of claims 1 to 3, characterized in that the fan (63) divides the air supply duct (60) into two halves and that this "with two air outlets (61,67) for the both halves is provided. 5. Ventilation device according to one of claims 1 to 4-, characterized characterized in that the heat exchanger (13) is fixed in the compressor box (7) and that Control devices (147,14-8,14-9) for controlling a to be fed Amount of water to the heat exchanger ($ 1) is provided. 6. Ventilation device according to one of claims 1 to 5, characterized characterized in that the suction and delivery lines (139 »138) run for the compressor (130) at least in places in intimate mutual contact. BATH ORIGINAL 609846/0 00ΐ XL . Blank page