FI83697B - REGLERANORDNING SAERSKILT FOER LUFTKONDITIONERINGSANORDNINGAR. - Google Patents

Description

83697 Control unit specifically for air-conditioning systems Regleranordning särskilt för luftkonditionerings-anordningar 5

The invention relates in particular to a control device for air conditioning systems.

The force acting on the surface of the piston or the like is the area x the pressure acting on the surface 10. In practice, especially for air conditioning valves, it is a great inconvenience to increase the area by increasing the edge dimensions. The channel size already sets limiting extremes that cannot be exceeded. Thus, when the surface area or edge dimensions cannot be increased, it is only possible to increase the force by increasing the pressure.

However, often the pressure is a quantity that cannot be changed as desired, in which case the only way to increase the force is to increase the surface area.

The object of the invention is such a control device in which it is possible to utilize the overpressure and / or underpressure of the ventilation duct in order to carry out a control event for the ventilation valve. The object of the invention is in particular a control device which is suitable for adjusting the setpoint of a constant flow valve or for selecting that setpoint as desired. A major difficulty in known hardware solutions is the inadequacy of the control force. Often a separate power supply and even a separate power source are required to adjust the setpoint. Solutions which have sought to utilize the overpressure and / or underpressure of the ventilation duct have also encountered difficulties in that these underpressures have not been sufficient to achieve the desired control force. It has also not been possible to increase the operating area of the actuator, e.g. the piston area, in the control of il-30 mast valves or other air conditioners, because the diameter of the air conditioning duct has been a limiting factor, etc. The difficulty in increasing the diameter is the increase in structural dimensions. e.g.

35 material strengths, which should be sufficient to avoid, for example, vibration problems or deflection problems.

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The object of the invention is therefore also to provide a control device which has been able to avoid the above-mentioned drawbacks. It is an object of the invention to provide a control device which is particularly suitable for controlling constant air volume valves and in particular for adjusting their setpoint. The object of the invention 5 has been achieved with a device solution in which it has been realized to increase the pressure action area so that pressure action surfaces are connected to the structure in the direction of movement.

According to the invention, the surface area can in principle be increased indefinitely, in which case a certain amount of control force can be obtained with a certain limited available control pressure.

The object of the invention is further achieved by an insight according to the invention, in which the device providing the control movement is formed by a modular structure which can be extended in the direction of the longitudinal axis of the structure according to the force requirement.

The control device according to the invention is mainly characterized in that in the control device the fixed body part comprises an opening in the bottom part and the movable body part comprises an opening in the bottom part, which openings are connected to each other by a connecting hose through which the medium pressure can be applied to the movable wall structure and the fixed wall structure and reducible to an intermediate space.

According to the invention, a control device is formed, which device comprises a modular structure. The module structure is formed of interconnected module units that can be connected end-to-end. Each module unit 30 comprises an outer fixed body part and an inner movable body part. In successive module units, the fixed body parts are connected end-to-end and the movable body parts are connected end-to-end, respectively. Depending on the control force requirement, the module structure can be formed by adding or subtracting module units. 35 Each module unit comprises a base part in the movable body part to which the pressure of the medium can be applied. By adding spacers and module units, the number of spacers and their bottom parts to which the medium pressure can be applied is increased. Thus, the force required for adjustment can also be increased.

The invention will now be described with reference to some preferred embodiments of the invention shown in the figures of the accompanying drawings, to which, however, the invention is not intended to be exclusively limited.

Figure 1 shows a modular structure according to the invention in a schematic and axonometric representation.

Figure 2 shows the device according to the invention in principle and in cross-section. The cross section is taken along the section line I-I in Fig. 1. The operation of the device according to the invention is also described in principle via the figure.

Figure 3A shows the device according to the invention in a divided and axonometric representation.

Fig. 3B is a section XI-II of Fig. 3A on an enlarged scale.

Figure 3C is a section III-III of Figure 3A on an enlarged scale.

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Fig. 4 shows the device of Fig. 3 assembled and in a longitudinal cross-sectional view.

Figure 5 shows an axonometric view of a preferred embodiment of a control device according to the invention.

Figure 6 shows a partial cross-section of Figure 5 taken along section line III-III.

Fig. 7 shows a control pressure import arrangement in a schematic representation and applied to the device solution shown in Figs. 5 and 6.

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Figure 1 schematically shows a device solution according to the invention. The control device comprises a modular structure 10 formed by interconnectable module units 11a, 11b ... The figure shows two interconnected units 5. These module units 11 are connected to each other in such a way that they can be extended in the direction of the central axis X of the module unit, which is also the direction of movement of the movable frames 13 of the module structure. The module unit 11 is formed by an outer fixed first body part 12 and an inner movable and movement 10 and force-transmitting second body part 13. The first body part 12 is preferably connected to a ventilation duct or may comprise a mouthpiece, e.g. preferably a conical end connection part, from which it can be hung preferably in a channel opening of circular cross-section. The second movable body parts 13 are connected to each other at their ends 15 and likewise the first fixed body parts 12. The direction of movement of the movable body parts 13 is the direction of the central axis X of the module unit and at the same time the central axis X of the entire module structure. The direction of movement of the movable body parts 13 is indicated in Figure 1 by an arrow L. The movable body part 13 may be connected at one end to an air flow restricting part in the ventilation duct 20. Thus, by means of the movement of the part 13, the position of the throttle part in the air duct is adjusted.

Figure 2 shows a modular structure according to the invention in a cross-sectional view and taken along the section line I-I in Figure 1.

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As shown in the figure, the direction of movement of the second movable body portion 13 is indicated by the arrow L 1. The central axis of the unit is denoted by the letter X. The module structure 10 consists of interconnected detachable module units 11a, 11b ... Each module unit 30 11a, 11b ... comprises a first body part, i.e. a fixed body part 12, and a second body part, i.e. a movable body part 13. The module unit 11a thus comprises a first fixed body part 12a and a second movable body part 13a. Respectively, the module unit 11b comprises a first - fixed body part 12b and a second movable body part 13b. The second movable body portions 13a and 13b are releasably connected to each other and are mounted to move relative to the fixed body portions 12a and 12b of the module units 11a, 11b 5 83697 of the modular structure 10. The fixed body portion 12a comprises an outer jacket surface 12a, and a base portion 12¾. Accordingly, the fixed body portion 12b comprises a sheath portion 12b, and a base portion 12b3. The sheath portions 12a, and 12b, are releasably connected end to end at C ,.

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The movable body portion 13a inside the fixed body portion 12a of the module unit 11a comprises a jacket portion 13a parallel to the central axis X, and a base portion 13¾ perpendicular to the central axis X. Correspondingly, the second module unit 11b comprises a movable body part 13b inside its fixed body part 12b, which comprises a jacket part 13b, respectively, and a base part 13b2 perpendicular to the central axis X.

The movable body parts 13a and 13b are releasably connected to each other at C. Thus, the body parts 13a and 13b move in a single package 15 relative to the fixed body parts 12a and 12b of the module units 11a, 11b of the modular structure 10. This movement is made possible by forming the jacket parts 13a, and 13b, with guides T1 projecting from the ends of the jacket surfaces 13a, 13b running in the direction of the central axis X of the unit and passing through the guide openings T2 of the base structures 12¾ 20 and 12b2 of the module units 11a and 11b. .

Between the wall structures, i.e. the bottom parts 13¾ and 12¾ and 13b2 and 12b2, there is a decreasing and increasing intermediate space G1 and G2.

These intermediate spaces G1, G2 are connected to each other by a connecting hose 15 by attaching the connecting hose 15 at its ends to the openings 16 in the base structures 12¾.13b. The spaces G1 and G2 are formed airtight by preferably using a bellows-like, rolling and thus deformable seal 14. The seal 14 is flexible. . rullaustiiviste. It is arranged at 30 one end to abut and engage with the base part 12¾ and 12b2 and at the other end of the movable body part 13 of the module unit corresponding to it at the junction P1 and P2 of its jacket part and the base part. Thus, according to the invention, it has been possible to increase the area affected by the pressure by forming partitions 13 ^ 13b2. Depending on the power demand, it is possible to increase or decrease the interconnected module units 11 and thus the partitions.

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The movable body part 13b comprises an end piece 13b3 connected to the structure so that a spring part 19 is connected to said end piece. The spring part 19 is arranged between the end piece 12b3 of the fixed body part 12b 5 of the module unit 11b and the end piece 13b3 of the movable body part 13b. The pipe connection 18 is passed centrally through the spring 19 and connected to the connection opening 20 in the bottom part 12b2. In this way the pressure is obtained in the spaces G1 and G2. The spring 19 provides a counterforce to the movement Lt, which is necessary for the stepless setpoint adjustment.

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The movement of the jointly moving body parts 13a and 13b can be limited in both directions of movement by using stops 21 and 22. The stop 21 comprises a stop rod 21a connected to the movable body part 13b, preferably its end piece 13b}. Correspondingly, a second stop 22 is connected to said movable body part 13b, by means of which the movement distance in the second direction can be adjusted.

The stop 21 comprises a rod 21a and a scale 21a 'therein. The rod 21a is attached to the movable part 13b and its bottom part 13b3. The rod 21a comprises a stop piece 21b which is displaceable from its position. The stop member 21b acts as a stop, restricting the movement of the movable body part 13 against the bottom part 12b3 of the fixed body part 12b. Correspondingly, the movement in the other direction can be limited by a stop 22. It comprises a rod 22a, respectively, which is connected to the movable body part 13b and its bottom part 13b3 as shown in Fig. 2. The abutment portion 22b, is located on the opposite side of the wall structure 12b3 or the bracket or the like as a stop piece 21b. The position of the abutment portion 22b, is adjustable by the rod 22b associated with the abutment portion 22b, by moving the abutment portion 22b, by moving the transmission rod 22b2. The transfer rod 22b and the abutment portion 22b, 30 therein are further lockable in a fixed position relative to the rod 22a having an air flow scale 22a '.

Fig. 3A shows and an axonometric exploded view a modular structure 10 according to the invention. The figure shows two module units 11a and 11b to be connected to each other. As shown in the figure, the first module unit 11a comprises a movable body part 13a. The movable body part 7 83697 13a comprises a jacket part 13a, and an associated base part 13a ,. The sheath portion 13a is associated with a plurality of guide portions T 1 protruding from the edge of the sheath portion 13a. Preferably, there are eight guide parts T, eight. As shown in Fig. 3, a channel opening 16 is formed in the base part 13ai for transferring the pressurized medium to the next module unit to be connected. If the module unit is no longer connected as an extension of the structure in question, the base structure 13aj can be formed fixed without the opening 16.

As shown in Fig. 3A, the first module unit 11a 10 further comprises a fixed body portion 12a having a sheath portion 12a and a base portion 12¾ facing perpendicular thereto. The base part 12a2 comprises through-openings T2 for the guides T1 of the movable body part 13a. The number of openings T2 is equal to the number of guides T1 in the movable body part 13a.

The conductors T, of the movable body part 13a of the module unit 11a, connect to the movable body part 13b of the second module unit 11b. At the ends of the guide parts T, there are gripping parts T, a which engage the movable body part 13b of the second module unit 11b at the gripping points T, b formed therein in the housing part 13b of the movable body part 13b, into which the guide parts T, wedge-shaped gripping parts T, a settle.

The fixed body portions 12a and 12b further comprise a separate attachable base portion 17 for securing the other end 14a of the seal 14 to the body portion 12a, 12b.

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The part 17 comprises a base part 17a substantially perpendicular to the central axis X and a rim 17c projecting from the edges of the base part parallel to the central axis X. The part further comprises gripping parts 17b, by means of which the base part 17 can be connected to the base part 12a, 12bj of the fixed body part 12a, 12b 30 to the abutment openings E therein. The abutment openings E comprise gripping projections on the inner surfaces of the abutment openings. 17b 'settle. The base part 17 comprises an opening 16 into which the other end of the hose 15 or the like can be inserted. The other end 14¾ of the seal 14 is attached to the sheath portion 13a of the movable body portion 13a, and the base portion 13aj by means of attachments 23 (as shown in Fig. 3A). Correspondingly, the seal 14 is attached to the second module unit 11b.

The ring 23 comprises gripping knobs 23a or the like which fit into the abutment recesses 23b of the sheath part 13a of the part 13a of the part 5. When the ring 23 is in place, the seal 14 is attached to the parts 13a and 13b at its edges 14aj.

The other end of the hose 15 is inserted into the movable body part 13b of the second module unit 11b in the opening 16 in its bottom part 13b2.

Figure 3B shows a section II-II of Figure 3A. The sheath part 13a, comprises an opening 23b for the gripping knobs 23a of the ring 23. Correspondingly, said sheath part comprises an opening T1b for the gripping parts T, a of the conductor parts T, 15 of the module unit to be connected. Inside said frame structure there is a rim f into which the end 14a of the seal 14 can be inserted and then a ring 23 is placed to lock the seal in the part 13a.

Figure 3C shows a section III-III further from Figure 3A. The part 17 20 comprises, as shown in the figure, a base part 17a and an associated edge part 17c. Also associated with the base portion 17a are gripping portions 17b comprising abutment cavities 17b 'to which in the fixed body portion 12a its abutment. . the abutment gripping portions (not shown) in the recesses E are positioned as the base 17 engages the base portion 12a of the body portion 12a.

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The fixed body portions 12a and 12b are releasably connected to each other so that the protruding portions T3 protruding from the sheath portion 12a2 fit into the abutment slots G of the fixed body portion 12b of the second unit 11b. The protruding portions T} comprise openings T3a .

Fig. 4 is a more detailed cross-sectional view and an assembled modular structure shown in Fig. 3A. The figure shows the connection of the seal 14 with a separate base part 17 to the base structure of the fixed body part 12a, 12b 35. Correspondingly, the other ends of the conductors T of the movable body part 13a of the module unit 11a are connected to the movable body part 13b of the second module unit 11b 9 83697, said movable body parts 13a and 13b being displaceable by pressure in one package. -60 mm.

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Figure 5 shows a preferred embodiment of the device according to the invention. Figure 5 shows the device in an axonometric view.

Figure 6 is a partial cross-sectional view of the device of Figure 5 taken along section line III-III of Figure 5. It can be seen from Figure 6 that the modular structure according to the invention has a control part 30 connected to the end of the interconnected mobile module units, which is adapted to control the flow rate of air or gases. The adjusting member 30 comprises a deformable preferably rubber throttling member 31 adapted to change the projection of the outer circumference as the pressure difference increases over the valve so that the entire projection is adapted to increase over its entire circumference and preferably evenly in all cross-sections perpendicular to the X-axis. The choke portion 31 comprises a corrugated structure in which the ridges and bottoms of the corrugations run parallel to the central axis X20.

The throttling member 31 is adapted to move as the pressure difference increases closer to the conical body 32 of the valve structure and its conical wall 32a. In addition, as the pressure difference across the valve increases, the end 31a 25 of the throttling member 31 moves to the right against the spring force of the spring 33 as shown in the figure. In the device according to the invention, the setpoint adjustment is performed by a modular structure 11a, 11b, 11c. In the figure, the three module units are connected end to end. When an overpressure or underpressure with respect to the outside air is introduced into the spaces G1 tG2, Gj (internal spaces of the units) of the module structure 10, the movable body portion 13 of the module structure 30 is moved in either direction and thus the choke portion 31 is moved to either right or left. Thus, the choke portion 31 is moved to the desired position relative to the conical surface 32a to provide a flow rate setpoint. As shown in Fig. 5, the fixed body portion 12 35 of the setpoint adjusting device 10 is fixedly connected to the conical portion 32, and said connection is performed by means of separate connection ribs 34.

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By moving the throttling member 31 to the left as shown in Fig. 6, the flow gap between the throttling member 31 and the surface 32a is reduced and thus the flow setpoint is set smaller and the flow gap between the throttling member 31 and the conical portion 32 surface is increased accordingly. thus giving the flow a higher setpoint. The function of the control device 30 itself is to adjust the flow according to the set value so that the set flow value (arrow Lj) is maintained regardless of the pressure differences across the valve.

Figure 7 shows the supply of control pressure to the constant air volume valves comprising the modular structure 10 shown in Figures 5 and 6. The figure shows an air flow inlet duct 35 and an outlet duct 36 arranged in the room. The overpressure duct part 35a is along the channel 39 to the spaces G1, Gj, etc. of the modular structure. When producing 20 overpressure, the movable frame structure 13 is moved to the left in the structure shown in Figs. Thus, the choke portion 31 is moved closer to the conical wall 32a and thus the setpoint is reduced, and correspondingly, when introducing a vacuum to the spaces G1, G2, etc., the choke portion 31 is moved to the right as shown in Fig. 6 and thus the throttle portion 25 is moved further away . According to the invention, for example, the control device shown in Fig. 5 can be used in such a way that one control device is arranged in the fresh air inlet duct entering the room and correspondingly one control device is arranged in the air outlet duct to be removed from the room. The devices are placed in different directions in the ducts so that the direction of air flow (arrow L 1) is always as shown in Fig. 5, for example. According to the invention, the setpoint of the control device in the air duct and the control device in the supply air duct can now be adjusted so that the control occurs for both supply air 35 and exhaust air simultaneously. In addition, the control takes place in such a way that when the setpoint of the supply air, i.e. the control device 11 83697 in the supply air duct, is increased, the setpoint of the control device, i.e. the exhaust air, in the exhaust air duct is increased by a corresponding amount. Correspondingly, when the supply air setpoint is reduced, the exhaust air setpoint is also reduced by a corresponding amount.

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The switch 37 can also be such that it can steplessly adjust the pressure applied to the channel 39 and thus can also steplessly adjust the distance traveled by the throttle part 31 of the adjusting device 30. This allows the flow setpoint to be infinitely adjusted. The movement of the movable parts 13 can be adapted to take place against the spring force of the spring in either or both directions.

Claims (4)

A control device, in particular for air-conditioning installations, which control device is adapted to control the setpoint of an air-conditioning device, preferably a valve, comprising pressure medium supply means for applying control pressure to the pressure medium space, the control device consisting of interconnectable module units (11a, 11b), end-to-end, wherein in the structure each module unit (11) comprises an outer fixed body part (12) and an inner movable body part (13), wherein in successive module units (11a, 11b) the fixed body parts (12a, 12a) are connected end-to-end to each other and the movable body parts (13a, 13b) are connected end-to-end and in which the module structure can always be formed by adding or subtracting module units depending on the control force requirement and in which the movable body part wherein the movable body part (13) comprises at least two intermediate spaces (G1, G2 ...) for the pressure medium, into which the pressure of the medium can be applied to move the inner movable body part (13) to the desired position, and each module unit (11a) 11b) comprises a seal (14) fitted in each intermediate space (G1, G2), which seal (14) is arranged to abut and adhere to one wall (12a2; 12b2) at one end and to the other end; the movable body part (13a; 13b) of the corresponding module unit, preferably at the junction of the jacket surface and the wall structure (P ,, P2), 25 where the decreasing and increasing spacers (G ,, G2) are outwardly pressure-tight and where the pressure of the medium is the intermediate spaces (G1, G2 ...) are subjected to a pressure of the medium on the movable base part (13aj, 13b2 ...), characterized in that in the control device the fixed body part (12a) comprises an opening (16) in the base part and correspondingly comprises a movable base part a body portion (13b) with an opening (16) in its bottom portion (13b2), which openings (16) are connected to each other by a connecting hose (15) through which the medium pressure can be applied between the movable wall structure (13a2) and the fixed wall structure (128); into a reducible intermediate space (G,) 35 Control device according to the preceding claim, characterized in that the movable body parts (13a, 13b ...) comprise structurally related guide parts (T 1) adapted to pass through the fixed body parts (12a, 12b ...) through openings (T2) or the like for the guide parts and which guide parts (T1) of the second movable body part (13a) are connected to the second movable body part (13b). Adjusting device according to one of the preceding claims, characterized in that the structure comprises a spring (19) arranged between the movable body part (13) and the fixed body part (12) and preferably in the modular structure of one of the two extreme module units movable a gap between the end wall (13b3) or the end wall (12b3) or the like of the corresponding and fixed component, whereby the adjustment of the air flow setpoint can be performed steplessly against the spring force of the spring (19). Adjusting device according to one of the preceding claims, characterized in that a movable body part (12) of the module unit comprises an adjusting part (30) connected thereto, the adjusting part (30) comprising a deformable throttling part (31) adapted to change the projection of the outer circumference, that the entire projection is adapted to grow evenly in its circumferences 20 perpendicular to the longitudinal axis (X) of the device as the pressure difference across the valve increases, and that the position of the throttle part (31) on the central axis (X) is adjusted by moving the movable body part (13) to intermediate spaces (G, G2 ...) by means of the introduced control *: pressure and that the fixed body parts (12a, 12b, 12c) of the module units (11a, 11b, 11c) are connected to the valve cone (32) or the like. 30 35 14 83697