DE102018001043A1 - Control unit, coupling unit and control device for a vacuum toilet system, vacuum toilet system and method for operating a vacuum toilet system - Google Patents

Abstract

Control unit (50) for a vacuum toilet system (1) comprising a toilet bowl (11) comprising a toilet bowl inlet (11a) and a toilet bowl outlet (11b), characterized in that the control unit (50) comprises: emptying the toilet bowl (11) by the toilet bowl outlet (11b) in response to a pressure pulse of water flowing to the toilet bowl inlet (11a), a coupling unit (40), a control device (40, 50, 60, 70, 80, 90), a vacuum toilet system (1) and a method for operating a vacuum toilet system (1).

Description

The invention relates to vacuum toilet systems, and more particularly to apparatus and methods for operating vacuum toilet systems.

DE 41 12 888 A1 For example, a vacuum toilet system disclosed consists of a small number of toilets. Each of the toilets is connected through a normally closed waste water valve and a sewer pipe in open communication with a sewage collection tank. A vacuum generating device generates a negative pressure in the tank and the sewage pipe when toilet flushing is started. This negative pressure is of an order of magnitude effective for transporting the wastewater from one of the toilets into the tank. The operating time of the vacuum generating device is maintained substantially constant for each toilet evacuation cycle, thereby creating a vacuum level that varies in accordance with a total free volume above a liquid surface in the tank and in the sewage pipes. This variation of the vacuum level provides an optimal vacuum, which is adapted to the total free volume in the sewer pipes and in the tank.

This vacuum toilet system includes numerous remote controlled solenoid operated valves, a control unit and an interface unit, and requires electrical power and compressed air ("compressed air") for operation.

The invention is based on the object to provide simplified devices and methods for operating vacuum toilet systems.

This object is solved by the subject matters of the independent claims. Preferred embodiments are given in the dependent claims.

The invention is based on the idea of achieving the emptying of a toilet bowl of a vacuum toilet system by existing energies of the required water supply and sanitation. In this case, a negative pressure from the wastewater disposal at a control input of a waste water valve can be controlled by a pressure pulse of rinse water from the water supply. This can be dispensed with the application of auxiliary energy such as electric power or compressed air. This can continue to reduce the cost and cost of installation, operation and maintenance of the vacuum toilet system. By omitting components, the vacuum toilet system can be made more compact and lighter. As a result, for example, the possible uses of the vacuum toilet system in vehicles or aircraft such as aircraft and watercraft such as ships can be improved.

The invention relates to a control unit for a vacuum toilet system comprising a toilet bowl comprising a toilet bowl inlet and a toilet bowl outlet, wherein the control unit can control draining of the toilet bowl by the toilet bowl outlet in response to a pressure pulse of water flowing to the toilet bowl inlet.

Preferably, the control unit may control operation of a waste water valve connected to the toilet bowl outlet and a sewer pipe by means of a negative pressure in the sewer pipe in response to the pressure pulse of the water flowing from a water supply connected to the toilet bowl inlet to the toilet bowl inlet.

Preferably, the control unit may comprise: an air inlet for receiving another pressure pulse of air or other gas; a vacuum outlet connectable to a control input of a sewage valve; a vacuum inlet connectable to a sewer pipe; a control valve for connecting the vacuum outlet to the vacuum inlet in response to the other pressure pulse; and a return device configured to return the control valve after being connected to a rest position in which the vacuum outlet is separated from the vacuum inlet. As a result, a duration of the emptying can be adapted to a duration of the flushing.

Preferably, the invention relates to a control unit, wherein the restoring device is designed as a spring or coil spring. This increases the reliability of the restoring device. As a result, a size of the restoring device can be further reduced. It is also possible, instead of a spring or coil spring, to use a pneumatic restoring device or an elastic material, e.g. Plastic or rubber to use as a restoring device.

Preferably, the invention relates to a control unit, wherein the control valve comprises a movable valve closure, which is arranged between the vacuum outlet and the vacuum inlet. Thereby, a structure of the control unit can be simplified. Furthermore, reliability of the control unit can be increased.

Preferably, the invention relates to a control unit, wherein the valve closure as Slider or piston is formed. Thereby, the structure of the control unit can be further simplified. Furthermore, the reliability of the control unit can be further increased

Preferably, the invention relates to a control unit, wherein the control valve comprises a valve seat. Thereby, a precision of the control unit can be increased.

Preferably, the control unit may further comprise: a movable separator disposed between the air inlet and the control valve. Thereby, the structure of the control unit can be further simplified. Furthermore, the reliability of the control unit can be further increased.

Preferably, the invention relates to a control unit, wherein an effective diameter or an effective cross section of the valve seat corresponds to an effective diameter or an effective cross section of the separating device. As a result, an influence of transmission forces on the valve closure can be prevented by the negative pressure in the control unit.

Preferably, the invention relates to a control unit, wherein the separating device is designed as a slide or piston. Thereby, the structure of the control unit can be further simplified. Furthermore, the reliability of the control unit can be further increased. Preferably, the invention relates to a control unit, wherein the separating device is designed as a flexible separator, septum or foil. Thereby, a tightness of the control unit can be increased. Furthermore, a weight of the control unit can be reduced.

Preferably, the control unit may further include: an atmospheric pressure inlet including an atmospheric pressure inlet port or an adjustable atmospheric pressure inlet port. As a result, an adjustability of the duration of the emptying can be achieved.

Preferably, the invention relates to a control unit, wherein the vacuum outlet is connected in the rest position with the atmospheric pressure inlet. As a result, a safe closing of the waste water valve can be achieved.

The invention further relates to a coupling unit for a vacuum toilet system, comprising: a water inlet connectable to a water supply of the vacuum toilet system for receiving a pressure pulse of water; an air outlet for discharging another pressure pulse of air; a movable separator disposed between the water inlet and the air outlet and configured to convert the pressure pulse into the other pressure pulse; and a return device configured to return the separator to a rest position after conversion. As a result, a duration of the emptying can be adapted to a duration of the flushing.

Preferably, the invention relates to a coupling unit, wherein the separating device is designed as a slide or piston. Thereby, the structure of the coupling unit can be further simplified. Furthermore, the reliability of the coupling unit can be further increased. Preferably, the invention relates to a coupling unit, wherein the separating device is designed as a flexible separating device, septum or film. As a result, a tightness of the coupling unit can be increased. Furthermore, a weight of the coupling unit can be reduced.

Preferably, the invention relates to a coupling unit, wherein the restoring device is designed as a spring or coil spring. This increases the reliability of the restoring device. As a result, a size of the restoring device can be further reduced.

Preferably, the coupling unit may further comprise: an atmospheric pressure inlet comprising an atmospheric pressure inlet port or an adjustable atmospheric pressure inlet port connected to the air outlet. As a result, an adjustability of the duration of the emptying can be achieved.

The toilet system is functional even without a coupling unit. In this case, the pressure pulse of the water flowing into the toilet bowl inlet is directly connected to the air inlet of the control unit. However, in this case the duration of the pressure pulse is more difficult to control. The actual task of the coupling unit is to regulate the duration of the pressure pulse of the air inlet of the control unit, e.g. shorten if necessary.

The invention further relates to a control device for a vacuum toilet system comprising a toilet bowl comprising a toilet bowl inlet and a toilet bowl outlet, wherein the control means can control draining of the toilet bowl by the toilet bowl outlet in response to a pressure pulse of water flowing to the toilet bowl inlet.

Preferably, the control device may actuate a waste water valve connected to the toilet bowl outlet and a sewer pipe by means of a negative pressure in the Sewer as a function of the pressure pulse of the water, which flows from a water supply, which is connected to the toilet bowl inlet, to the toilet bowl inlet control.

Preferably, the controller may convert the pressure pulse of the water into another pressure pulse of air; and actuate the waste water valve by the other pressure pulse. As a result, the adjustability of the duration of the emptying can be improved.

Preferably, the control device may comprise one of the above-mentioned control units.

Preferably, the control device may comprise one of the above-mentioned coupling units.

The invention further relates to a vacuum toilet system, comprising: a toilet bowl comprising a toilet bowl inlet and a toilet bowl outlet; wherein emptying of the toilet bowl by the toilet bowl outlet is controlled in response to a pressure pulse of water flowing to the toilet bowl inlet.

Preferably, the vacuum toilet system may further include: a water supply connected to the toilet bowl inlet; a sanitation system comprising a sewer pipe and a sewer valve, the sewer valve being connected to the toilet bowl outlet and the sewer pipe being connected to the sewer valve; and a controller connected to the water supply, the sewer pipe and the sewer valve and adapted to operate the sewer valve by means of a negative pressure in the sewer pipe in response to the pressure pulse of the water flowing from the water supply to the toilet bowl inlet.

Preferably, the control device of the vacuum toilet system may be further configured such that the pressure pulse of the water can be converted into another pressure pulse of air; and the waste water valve can be actuated by the other pressure pulse. As a result, the adjustability of the duration of the emptying can be improved.

Preferably, the control device of the vacuum toilet system may comprise one of the above-mentioned control units.

Preferably, the control device of the vacuum toilet system may comprise one of the above-mentioned coupling units.

The invention further relates to a method of operating a vacuum toilet system comprising a toilet bowl comprising a toilet bowl inlet and a toilet bowl outlet, the method comprising: emptying the toilet bowl through the toilet bowl outlet in response to a pressure pulse of water flowing to the toilet bowl inlet.

Preferably, emptying the toilet bowl may include: actuating a waste water valve connected to the toilet bowl outlet and a sewer pipe by means of negative pressure in the sewer pipe in response to the pressure pulse of the water flowing from a water supply connected to the toilet bowl inlet to the toilet bowl inlet ,

Preferably, emptying the toilet bowl may further comprise: converting the pressure pulse of the water into another pressure pulse of air; and actuating the waste water valve by the other pressure pulse. As a result, the adjustability of the duration of the emptying can be improved.

Preferably, the actuation of a waste water valve by means of one of the above control units can take place.

Preferably, the actuation of a waste water valve by means of one of the above-mentioned coupling units.

• 1 ein Vakuum-Toilettensystem 1 gemäß einer Ausführungsform der Erfindung;
• 2 eine schematische Schnittansicht einer Wasser / Luft-Koppeleinheit 40 des Vakuum-Toilettensystems 1 gemäß dieser Ausführungsform der Erfindung;
• 3 eine perspektivische Ansicht der Wasser / Luft-Koppeleinheit 40 des Vakuum-Toilettensystems 1 gemäß dieser Ausführungsform der Erfindung;
• 4 eine schematische Schnittansicht einer Steuereinheit 50 des Vakuum-Toilettensystems 1 gemäß dieser Ausführungsform der Erfindung; und
• 5 eine perspektivische Ansicht der Steuereinheit 50 des Vakuum-Toilettensystems 1 gemäß dieser Ausführungsform der Erfindung.

The invention will be explained in more detail by means of embodiments with reference to the accompanying drawings with further details. In this show:

• 1 a vacuum toilet system 1 according to an embodiment of the invention;
• 2 a schematic sectional view of a water / air coupling unit 40 the vacuum toilet system 1 according to this embodiment of the invention;
• 3 a perspective view of the water / air coupling unit 40 the vacuum toilet system 1 according to this embodiment of the invention;
• 4 a schematic sectional view of a control unit 50 the vacuum toilet system 1 according to this embodiment of the invention; and
• 5 a perspective view of the control unit 50 the vacuum toilet system 1 according to this embodiment of the invention.

In the following description, the same reference numerals are used for identical and equivalent parts.

1 shows a vacuum toilet system 1 according to an embodiment of the invention. The vacuum toilet system 1 includes a vacuum toilet 10 , a water supply 20 , a sanitation 30 , a control device 40 . 50 to control the vacuum toilet system 1 and interconnections, 60 . 70 . 80 , 90.

The vacuum toilet 10 includes a toilet bowl 11 , a toilet seat 12 and a toilet lid 13 , The toilet seat 12 and the toilet lid 13 are at an upper edge of the toilet bowl 11 arranged. The toilet seat 12 and the toilet lid 13 are on a back side of the toilet bowl 11 hinged. The toilet bowl 11 includes a toilet bowl inlet 11a and a toilet bowl outlet 11b , The toilet bowl inlet 11a is below the upper edge on the back of the toilet bowl 11 arranged and allows an inflow of rinse water in the toilet bowl 11 , The toilet bowl outlet 11b is on the back side of the toilet bowl 11 arranged below and allows drainage of wastewater from the toilet bowl 11 , As in 1 shown can be a cross section of the toilet bowl inlet 11a smaller than another cross section of the toilet bowl outlet 11b ,

The water supply 20 includes a water pipe 21 , a flush valve 22 and a rinse button 23 , The water supply 20 connects the toilet bowl 11 with a water supply 24 and allows a supply of the toilet bowl 11 with water to rinse the toilet bowl 11 , The water pipe 21 is with the toilet bowl inlet 11a connected. The flush valve 22 is in the water pipe 21 arranged and allows in his operation the inflow of the rinse water through the toilet bowl inlet 11a in the toilet bowl 11 , As in 1 shown is the flush button 23 with the purge valve 22 connected and allows triggering the flushing process. Thus, a person after a toilet the flushing operation by pressing the flush button 23 trigger by hand. The water pipe 21 For example, a nominal diameter of 15 and / or have a ½ "pipe thread.

The sanitation 30 includes a sewer 31 and a sewer valve 32 , The sanitation 30 connects the toilet bowl 11 with a wastewater drain 33 and allows disposal of waste water from the toilet bowl 11 , The toilet bowl outlet 11b is over the sewer valve 32 with the sewer 31 connected. The wastewater valve 32 includes a control input. A negative pressure (also referred to below as "vacuum") at the control input opens the waste water valve 32 and allows drainage of the waste water from the toilet bowl 11 into the sewage drain 33 , In the sewer pipe 31 There is a negative pressure, which ensures the discharge of the wastewater. The sewer pipe 31 may for example have a diameter of 50 mm and / or a wall thickness of 2 mm. The sewer pipe 31 may include, for example, plastic or metal.

The control device comprises a water / air coupling unit 40 (hereinafter also "coupling unit 40 ") And a control unit 50 , The water / air coupling unit 40 and their function will be described below with reference to 2 and 3 described in more detail. The control unit 50 and their function will be described below with reference to 4 and 5 described in more detail.

The wires 60 . 70 . 80 . 90 include a water inlet pipe 60 , an air line 70 , a vacuum outlet line 80 and a vacuum inlet line 90 , The water inlet pipe 60 connects the coupling unit 40 with the water pipe 21 and makes it possible to transmit a pressure pulse of the rinsing water in triggering the rinsing process to the coupling unit 40 , The water inlet pipe 60 may for example have a diameter of 4 mm and / or a wall thickness of 1 mm. The water inlet pipe 60 may include, for example, plastic or metal. The air line 70 connects the control unit 50 with the coupling unit 40 and allows transfer of another pressure pulse of air from the coupling unit 40 to the control unit 50 , The air line 70 may for example have a diameter of 4 mm and / or a wall thickness of 1 mm. The air line 70 may include, for example, plastic or metal. The vacuum outlet line 80 connects the control input of the waste water valve 32 with the control unit 50 and allows the drain valve to open 32 , The vacuum outlet line 80 may for example have a diameter of 4 mm and / or a wall thickness of 1 mm. The vacuum outlet line 80 may include, for example, plastic or metal. The vacuum inlet line 90 connects the control unit 50 with the sewer 31 , or another negative pressure-carrying line, and allows the provision of negative pressure to open the sewer valve 32 , The vacuum inlet line 90 may for example have a diameter of 4 mm and / or a wall thickness of 1 mm. The vacuum inlet line 90 may include, for example, plastic or metal.

2 shows a schematic sectional view of the water / air coupling unit 40 of the vacuum toilet system 1 according to this embodiment of the invention.

The water / air coupling unit 40 includes a coupling unit housing 41 (hereinafter also "housing 41 "). The housing 41 includes a first coupling unit housing part 41a and a second coupling unit housing part 41b (hereinafter also "housing parts 41a . 41b "). The housing parts 41a . 41b For example, plastic such as thermoplastic or an acrylonitrile-butadiene-styrene copolymer ("ABS"), ceramic or metal such as aluminum or steel may be included. The housing parts 41a . 41b For example, they can be sprayed, cast, pressed or "made from scratch", milled or turned. The housing parts 41a . 41b For example, they can be glued, screwed or riveted together.

The first housing part 41a includes a coupling unit air outlet 43 (hereinafter also "air outlet 43 ") For connection to the air line 70 and a coupling unit air chamber 49a (hereinafter also "air chamber 49a") which are connected to each other. The air outlet 43 can, as in 2 shown on an outer end face of the first housing part 41a be centrally located. The air outlet 43 For example, an internal thread for receiving the air line 70 having an external thread. The first housing part 41a can, as in 2 shown a coupling unit atmospheric pressure inlet 48 (hereinafter also "atmospheric pressure inlet 48 "). The term "atmospheric pressure" refers to ambient air pressure. The atmospheric pressure inlet 48 can, as in 2 shown on a lateral surface of the first housing part 41a arranged and with the air chamber 49a be connected. The atmospheric pressure inlet 48 may be a coupling unit atmospheric pressure inlet port 48a (hereinafter also "atmospheric pressure inlet port 48a "). The atmospheric pressure inlet port 48a can be configured adjustable.

The second housing part 41b includes a coupling unit water inlet 42 (hereinafter also "water intake 42 ") For connection to the water inlet pipe 60 and a coupling unit water chamber 49b (hereinafter also "water chamber 49b "), Which are interconnected. The water inlet 42 can, as in 2 shown on an outer end face of the second housing part 41b be centrally located. The water inlet 42 For example, an internal thread for receiving the water inlet pipe 60 having an external thread.

The coupling unit 40 includes a coupling unit separator 47 (hereinafter also "separating device 47 ") Between the air chamber 49a and the water chamber 49b is arranged and, as in 2 shown, also between the housing parts 41a . 41b can be arranged. The separator 47 can, as in 2 shown to be formed as a flexible separator such as septum or foil and / or rubber. The separator 47 can be self-resetting. The coupling unit 40 can, as in 2 shown a coupling unit slider 45 (hereinafter also "slide 45 ") And / or a coupling unit resetting device 46 (hereinafter also "reset device 46 "). The reset device 46 can, as in 2 shown to be formed as a spring or coil spring. The reset device 46 For example, it may include metal such as steel or spring steel. The slider 45 and / or the reset device 46 can in the air chamber 49a be arranged. As in 2 shown, brings the return device 46 the separator 47 in a quiet location in the direction of the water inlet 42 ,

A pressure pulse at the water inlet 42 brings the separator 47 from the rest position to a working position and generates a different pressure pulse of air at the air outlet 43 , On the one hand, the atmospheric pressure inlet allows 48 an escape of a portion of the air from the air chamber 49a , On the other hand, allows the atmospheric pressure inlet 48 an inflow of air from outside the coupling unit 40 in the air chamber 49a and thus influences a duration of the other pressure pulse. Subsequently, the separator returns 47 from the working position to the rest position.

3 shows a perspective view of the water / air coupling unit 40 the vacuum toilet system 1 according to this embodiment of the invention. The housing 41 the coupling unit 40 is cylindrical. The housing 41 includes the two housing parts 41a . 41b , which are cylindrical and arranged linearly. This gives the coupling unit a compact and robust design. On an end face of the first housing part 41a is the air outlet 43 centrally located. On a lateral surface of the first housing part 41b is the atmospheric pressure inlet 48 arranged. Between the first housing part 41a and the second housing part 41b is the separator 47 recognizable. The two housing parts 41a . 41b can, as in 3 shown, be chastised.

4 shows a schematic sectional view of the control unit 50 the vacuum toilet system 1 according to this embodiment of the invention.

The control unit 50 includes a control unit housing 51 (hereinafter also "housing 51 ") And a control unit control valve 55 (hereinafter also "control valve 55 "). The housing 51 includes a first control unit housing part 51a , a second control unit housing part 51b and a third one Control unit housing portion 51c (hereinafter also "housing parts 51a . 51b . 51c "). The housing parts 51a . 51b . 51c For example, they may include plastic such as thermoplastic or ABS, ceramic or metal such as aluminum or steel. The housing parts 51a . 51b . 51c For example, they can be sprayed, cast, pressed or "made from scratch", milled or turned. The housing parts 51a . 51b . 51c For example, they can be glued, screwed or riveted together.

The first housing part 51a includes a control unit vacuum outlet 53 (hereinafter also "vacuum outlet 53 ") For connection to the vacuum outlet line 80 and a part of a control unit vacuum chamber 59b (hereinafter also "vacuum chamber 59b "), Which are interconnected. The vacuum outlet 53 can, as in 4 shown on an outer end face of the first housing part 41a be arranged off-center. The vacuum outlet 53 For example, an internal thread for receiving the Vakuumauslassleitung 80 having an external thread. The first housing part 51a can, as in 4 shown a control unit atmospheric pressure inlet 58 (hereinafter also "atmospheric pressure inlet 58 ") And a control unit atmospheric pressure chamber 59c (hereinafter also atmospheric pressure chamber 59c ). The atmospheric pressure inlet 58 can, as in 4 shown on the outer end face of the first housing part 41a centrally located and with the atmospheric pressure chamber 59c be connected. The atmospheric pressure inlet 58 may be a controller atmospheric pressure inlet port 58a (hereinafter also "atmospheric pressure inlet port 58a "). The atmospheric pressure inlet port 58a can be configured adjustable. The atmospheric pressure inlet 58 may further include a control unit atmospheric pressure inlet seal 58c (hereinafter also "atmospheric pressure inlet seal 58c "). The atmospheric pressure inlet seal 58c can in the atmospheric pressure chamber 59c be arranged.

The second housing part 51b includes a control unit vacuum inlet 54 (hereinafter also "vacuum inlet 54 ") For connection to the vacuum inlet line 90 and another part of the vacuum chamber 59b that are interconnected. The vacuum inlet 54 can, as in 4 shown on a lateral surface of the second housing part 51b be arranged. The vacuum inlet 54 For example, an internal thread for receiving the vacuum inlet line 90 having an external thread.

The third housing part 51c includes a control unit air inlet 52 (hereinafter also "air intake 52 ") For connection to the air line 70 and a control unit air chamber 59a (hereinafter also "air chamber 59c "), Which are interconnected. The air intake 52 can, as in 4 shown on an outer end face of the third housing part 51c be centrally located. The air intake 52 For example, an internal thread for receiving the air line 70 having an external thread.

The third housing part 51c can, similarly as with respect to in 2 Coupling unit shown 40 described include a control unit atmospheric pressure inlet. The control unit atmospheric pressure inlet may be on a lateral surface of the third housing part 51c arranged and with the air chamber 59a be connected. The controller atmospheric pressure inlet may include a controller atmospheric pressure inlet port. The atmospheric pressure inlet opening may be adjustable. The coupling unit 40 and / or the control unit 50 may have an atmospheric pressure inlet.

The control unit 50 includes a control unit separator 57 (hereinafter also "separating device 57 ") Between the air chamber 59a and the vacuum chamber 59b is arranged and, as in 4 shown, also between the housing parts 51b . 51c can be arranged. The separator 57 can, as in 4 shown to be formed as a flexible separator such as septum or foil and / or rubber. The separator 57 can be self-resetting. The control unit 50 includes, as in 4 shown the control valve 55 , The control valve 55 is controllable and includes a movable control valve gate 55a (hereinafter also "valve closure 55a ), A control valve seat 55b (hereinafter also "valve seat 55b ), A control valve seat seal 55c (hereinafter also "valve seat seal 55c ") And a control unit reset device 56 (hereinafter also "reset device 56 "). The valve closure 55a can in the vacuum chamber 59b be arranged. The valve closure 55a may be a cavity that houses the atmospheric pressure chamber 59c forms, have. The valve seat 55b is in the second housing part 51b arranged. An effective diameter or cross section of the valve seat 55b can, as in 4 shown an effective diameter or an effective cross section of the separator 57 correspond. This can affect the transmission forces on the valve closure 55a by the negative pressure in the control unit 50 be prevented. The reset device 56 can in the atmospheric pressure chamber 59c be arranged. The reset device 56 can, as in 4 shown to be formed as a spring or coil spring. The reset device 56 For example, it may include metal such as steel or spring steel. As in 4 shown, brings the return device 56 the valve closure 55a in a rest position in the direction of the air inlet 52 , The valve seal 55c on the valve closure 55a is arranged, sitting on the valve seat 55b in the second housing part 51b is arranged. In the rest position is a connection between the vacuum outlet 53 and the vacuum inlet 54 interrupted. In the rest position can be a connection between the vacuum outlet 53 and the atmospheric pressure inlet 58 consist.

A pressure pulse at the air inlet 52 brings the valve closure 55a from the rest position to a working position. In the working position is the connection between the vacuum inlet 54 and the vacuum outlet 53 manufactured. In the working position also sits the valve closure 55a on the atmospheric pressure inlet seal 58c , This allows the connection between the vacuum outlet 53 and the atmospheric pressure inlet 58 to be interrupted. After dropping the pressure pulse, the valve closure returns 55a from the working position to the rest position.

5 shows a perspective view of the control unit 50 the vacuum toilet system 1 according to this embodiment of the invention. The housing 51 the control unit 50 is cylindrical. The housing 51 includes the three housing parts 51a . 51b . 51c , which are cylindrical and arranged linearly. This gives the control unit 50 a compact and robust design. The housing 51 may for example have a diameter of 40 mm and / or a height of 50 mm. On an end face of the first housing part 51a are the vacuum outlet 53 and, centrally, the atmospheric pressure inlet 58 arranged. On a lateral surface of the second housing part 51b is the vacuum inlet 54 arranged. Between the second housing part 51b and the third housing part 51c is the separator 57 recognizable. The three housing parts 51a . 51b . 51c can, as in 5 shown, be chastised.

If, again with respect to 1 , the rinsing process by pressing the rinse button 23 is triggered, the pressure pulse of the rinse water through the water inlet pipe 60 to the coupling unit 40 transmit and converted there into the other pressure pulse of the air. The other pressure impulse of the air is over the air line 70 to the control unit 50 transferred and connects there the vacuum outlet 53 connected to the control input of the sewer valve 32 connected to the vacuum inlet 54 that with the negative pressure leading sewer pipe 31 connected is. This allows the wastewater valve 32 be opened during the flushing process, without any additional energy such as electrical energy or pneumatic energy.

You control device, the coupling unit 40 and the control unit 50 in a housing or provide their functions in the housing.

LIST OF REFERENCE NUMBERS

1

Vacuum toilet system

10

Vacuum toilet

11

Toilet bowl

11a

Toilet bowl inlet (toilet bowl inlet)

11b

Toilet bowl outlet (toilet bowl outlet)

12

Toilet seat

13

Toilet lid

20

Water supply

21

Water pipe

22

Flushing valve

23

Flushing knob

24

Water intake

30

Sanitation (wastewater disposal)

31

Sewer pipe (wastewater pipe)

32

Wastewater valve

33

Wastewater discharge

40

Water / air interface unit (water / air interface unit)

41

Coupling unit housing (interface unit casing)

41a, 41b

Coupling unit housing part (interface unit casing part)

42

Coupling unit water inlet (interface unit water inlet)

43

Coupling unit air outlet (interface unit air outlet)

45

Coupling unit slider (interface unit piston)

46

Coupling unit reset device (interface unit resetting device)

47

Coupling unit separator (interface unit separator)

48

Coupling unit atmospheric pressure inlet (interface unit atmospheric pressure inlet)

48a

Coupling unit atmospheric pressure inlet port

49a

Coupling unit air chamber (interface unit air chamber)

49b

Coupling unit water chamber (interface unit water chamber)

50

Control unit

51

Control unit casing

51a, 51b, 51c

Control unit casing part

52

Control unit air inlet

53

Control unit vacuum outlet

54

Control unit vacuum inlet

55

Control unit valve

55a

Control unit valve plug

55b

Control unit valve seat

55c

Control unit valve seat seal

56

Control unit resetting device

57

Control unit separator

58

Control unit atmospheric pressure inlet

58a

Control unit atmospheric pressure inlet nozzle

58c

Control unit atmospheric pressure inlet seal

59a

Control unit air chamber

59b

Control unit vacuum chamber

59c

Control unit atmospheric pressure chamber

60

Water inlet pipe

70

Air pipe

80

Vacuum outlet pipe

90

Vacuum inlet pipe

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4112888 A1 [0002]

Claims (27)

A control unit (50) for a vacuum toilet system (1) comprising a toilet bowl (11) comprising a toilet bowl inlet (11a) and a toilet bowl outlet (11b), characterized in that the control unit (50) comprises: - emptying the toilet bowl (11 ) through the toilet bowl outlet (11b) in response to a pressure pulse of water flowing to the toilet bowl inlet (11a). The control unit (50) after Claim 1 characterized in that the control unit (50): - activating a waste water valve (32) connected to the toilet bowl outlet (11b) and a sewer pipe (31) by means of a negative pressure in the sewer pipe (31) in response to the pressure pulse of the water tank Water that can flow from a water supply (20) connected to the toilet bowl inlet (11a) to the toilet bowl inlet (11a). The control unit (50) after Claim 1 or 2 comprising: - an air inlet (52) for receiving another pressure pulse of air; - A vacuum outlet (53) which is connectable to a control input of a / the sewer valve (32); - a vacuum inlet (54) connectable to a sewer pipe (31); a control valve (55) for connecting the vacuum outlet (53) to the vacuum inlet (54) in response to the other pressure pulse; and - reset means (56) adapted to return the control valve (55) to a rest position where the vacuum outlet (53) is separate from the vacuum inlet (54) after being connected. The control unit (50) after Claim 3 in which: - the return device (56) is designed as a spring or spiral spring. The control unit (50) after Claim 3 or 4 in which: - the control valve (55) has a movable valve closure (55a) disposed between the vacuum outlet (53) and the vacuum inlet (54), The control unit (50) after Claim 5 in which: - the valve closure (55a) is designed as a slide or piston. The control unit (50) according to one of Claims 3 to 6 in which: - the control valve (55) comprises a valve seat (55b). The control unit (50) according to one of Claims 3 to 7 further comprising: a movable separator (57) disposed between the air inlet (52) and the control valve (55). The control unit (50) according to Claims 7 and 8th in which: - an effective diameter of the valve seat (55b) corresponds to an effective diameter of the separator (57). The control unit (50) after Claim 8 or 9 in which: - the separating device (57) is designed as a slide, piston, flexible separator, septum or foil. The control unit (50) according to one of Claims 3 to 10 , further comprising: an atmospheric pressure inlet (58) comprising an atmospheric pressure inlet port (58a) or an adjustable atmospheric pressure inlet port. The control unit (50) after Claim 11 in which: - the vacuum outlet (53) in the rest position is connected to the atmospheric pressure inlet (58). A coupling unit (40) for a vacuum toilet system (1) comprising: - a water inlet (42) connectable to a water supply (20) of the vacuum toilet system (1) for receiving a pressure pulse of water; an air outlet (43) for delivering another pressure pulse of air; - a movable separator (47) disposed between the water inlet (42) and the air outlet (43) and adapted to convert the pressure pulse into the other pressure pulse; and - reset means (46) adapted to return the separating means (47) to a rest position after being converted. The coupling unit (40) after Claim 13 in which: - the separating device (47) is designed as a slide, piston, flexible separator, septum or foil; or - the return device (46) is designed as a spring or coil spring. The coupling unit (40) after Claim 13 or 14 , further comprising: - an atmospheric pressure inlet (48) comprising an atmospheric pressure inlet port (48a) or an adjustable atmospheric pressure inlet port connected to the air outlet (43). A control device (40, 50, 60, 70, 80, 90) for a vacuum toilet system (1) comprising a toilet bowl (11) comprising a toilet bowl inlet (11a) and a toilet bowl outlet (11b), characterized in that the control device (11) 40, 50, 60, 70, 80, 90): - emptying the toilet bowl (11) through the toilet bowl outlet (11b) in response to a pressure pulse of water flowing to the toilet bowl inlet (11a). The control device (40, 50, 60, 70, 80, 90) after Claim 16 characterized in that the control device (40, 50, 60, 70, 80, 90): - operating a waste water valve (32) connected to the toilet bowl outlet (11b) and a sewer pipe (31) by means of a negative pressure in the sewer pipe (31) in response to the pressure pulse of the water, which from a water supply (20) which is connected to the toilet bowl inlet (11 a), flows to the toilet bowl inlet (11 a) can control. The control device (40, 50, 60, 70, 80, 90) after Claim 16 or 17 , characterized in that the control device (40, 50, 60, 70, 80, 90): - can convert the pressure pulse of the water into another pressure pulse of air; and - the sewer valve (32) can be actuated by the other pressure pulse. The control device (40, 50, 60, 70, 80, 90) according to one of Claims 16 to 18 , characterized in that the control device (40, 50, 60, 70, 80, 90): - the control unit (50) according to one of Claims 1 to 12 includes; or - the coupling unit (40) according to one of Claims 13 to 15 includes. A vacuum toilet system (1) comprising: - a toilet bowl (11) comprising a toilet bowl inlet (11a) and a toilet bowl outlet (11b); characterized in that: - emptying the toilet bowl (11) through the toilet bowl outlet (11b) in response to a pressure pulse of water flowing to the toilet bowl inlet (11a). The vacuum toilet system (1) after Claim 20 , further comprising: - a water supply (20) connected to the toilet bowl inlet (11a); - a sanitation system (30) comprising a sewer pipe (31) and a sewer valve (32), the sewer valve (32) being connected to the toilet bowl outlet (11b) and the sewer pipe (31) being connected to the sewer valve (32); and - a control device (40, 50, 60, 70, 80, 90) which is connected to the water supply (20), the sewer pipe (31) and the waste water valve (32) and is designed such that the waste water valve (32) by means of a negative pressure in the sewer line (31) in response to the pressure pulse of the water flowing from the water supply (20) to the toilet bowl inlet (11a), can be actuated. The vacuum toilet system (1) after Claim 21 wherein the control device (40, 50, 60, 70, 80, 90) is further configured such that: - the pressure pulse of the water can be converted into another pressure pulse of air; and - the waste water valve (32) can be actuated by the other pressure pulse. The vacuum toilet system (1) after Claim 21 or 22 in which: - the control device (40, 50, 60, 70, 80, 90) controls the control unit (50) according to one of the Claims 1 to 12 includes; or - the control device (40, 50, 60, 70, 80, 90) the coupling unit (40) according to one of Claims 13 to 15 includes. A method of operating a vacuum toilet system (1) comprising a toilet bowl (11) comprising a toilet bowl inlet (11a) and a toilet bowl outlet (11b), the method characterized by : - emptying the toilet bowl (11) through the toilet bowl outlet (11b) Dependence of a pressure pulse of water flowing to the toilet bowl inlet (11a). The procedure according to Claim 24 wherein the emptying of the toilet bowl (11) comprises: - actuating a waste water valve (32) connected to the toilet bowl outlet (11b) and a sewer pipe (31) by means of a negative pressure in the sewer pipe (31) in response to the pressure pulse of the water which flows from a water supply (20) connected to the toilet bowl inlet (11a) to the toilet bowl inlet (11a). The procedure according to Claim 25 wherein the emptying of the toilet bowl (11) further comprises: - converting the pressure pulse of the water into another pressure pulse of air; and - actuating the waste water valve (32) by the other pressure pulse. The procedure according to Claim 25 or 26 in which: - actuating a waste water valve (32) by means of the control unit (50) according to one of the Claims 1 to 12 or the coupling unit (40) according to one of Claims 13 to 15 he follows.

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