Cooking appliance, in particular commercial cooking appliance

Abstract

A cooking appliance, in particular a commercial cooking appliance, comprising a housing in which a cooking space is arranged and which is provided with a housing outlet, a condenser connected with the cooking space, a cooling water supply device and an appliance outlet, wherein the condenser has a multi-chamber system and the cooling water supply device comprises at least one supply line leading into the chamber provided with the appliance outlet.

Claims

1. A cooking appliance comprising: a housing having a cooking space and an outlet from the cooking space, an appliance outlet, a condenser fluidly connected to the cooking space, wherein the condenser comprises a first, a second and a third separate chamber each fluidly connected to another of the separate chambers, wherein the outlet from the cooking space is disposed in the first of the plurality of separate chambers, wherein the appliance outlet is disposed in the third of the plurality of separate chambers, and wherein the second of the plurality of separate chambers is disposed between the first and the third separate chambers, a cooling water supply device, wherein the cooling water supply device has at least one supply line having an end disposed in the third of the plurality of separate chambers, wherein the end of the supply line is disposed in an air space at a location selected from above a water level in the third of the plurality of chamber, an orifice area of the appliance outlet, or a combination of the foregoing.

2. The cooking appliance according to claim 1, further comprising a mixing device disposed in the appliance outlet.

3. The cooking appliance according to claim 2, wherein the appliance outlet is provided with a temperature sensor.

4. The cooking appliance according to claim 3, wherein the temperature sensor is disposed at the mixing device.

5. The cooking appliance according to claim 1, wherein the supply line is provided with a temperature sensor.

6. The cooking appliance according to claim 1, wherein the supply line is provided with a shut-off device configured to be opened and closed.

7. The cooking appliance according to claim 1, wherein the cooling water supply device is configured to be controlled or regulated by at least one temperature sensor.

8. A cooking appliance comprising: a housing having a cooking space and an outlet from the cooking space; a cooling water supply; and a condenser fluidly connected to the cooking space, wherein the condenser comprises three separate chambers, in sequence: a first chamber, wherein the outlet from the cooking space is disposed in the first chamber and forms a first water trap, a second chamber fluidly connected to the first chamber and having a second water trap, and a third chamber fluidly connected to the second chamber and having a third water trap defined by the position of the third chamber, wherein the second chamber is disposed between the first and the third chamber, wherein the third chamber is connected with an appliance wastewater outlet, and wherein the cooling water supply has at least one supply line having an end disposed in the third chamber, wherein the end of the supply line is disposed in an air space at a location selected from above a water level in the third of the plurality of chamber, an orifice area of the appliance outlet, or a combination of the foregoing.

9. The cooking appliance according to claim 8, wherein the first chamber is provided with a temperature sensor.

10. The cooking appliance according to claim 8, wherein the third chamber is provided with a temperature sensor.

11. The cooking appliance according to claim 8, wherein the third chamber is thermally insulated.

12. The cooking appliance according to claim 8, wherein the third chamber or the fluid connection between the third chamber and the second chamber is thermally insulated.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a schematically simplified representation of a cooking appliance according to the disclosure corresponding to a first embodiment,

(2) FIG. 2 shows a representation of a second embodiment corresponding to FIG. 1, and

(3) FIG. 3 shows a third embodiment corresponding to one of FIGS. 1 and 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(4) FIG. 1 shows a first embodiment of a cooking appliance 1 according to the disclosure. The cooking appliance 1 comprises a housing 2 in which a cooking space 3 is arranged. This cooking space 3 can be opened and closed by a cooking space door not depicted in the figure in detail. The cooking space 3 is provided with a housing outlet 4 configured as an outlet pipe leading into a first chamber 6 of a condenser 5.

(5) As FIG. 1 illustrates, a fan propeller 20 configured to be set into rotation by a motor 21 is arranged in the cooking space 3.

(6) Behind the fan propeller 20 a fresh air supply pipe 30, in which a dehumidifier flap 22 is arranged, leads into the cooking space 3.

(7) The condenser 5 is configured as a condenser with a multi-chamber system which is a three-chamber system in the illustrated exemplary case. Correspondingly, in the illustrated exemplary case the condenser 5 comprises a first chamber 6 including a first water trap W1 with a level N1 and a second chamber 7 which follows the first chamber 6 and is separated from the first chamber 6 by means of an overflow, e.g. an overflow plate 37, but is also fluidly connected therewith.

(8) The second chamber 7 has a second water trap W2 with a level N2 and is fluidly connected with a third chamber 8 through a connecting piece 38.

(9) The third chamber 8 has a third water trap W3 with a level N3 and is fluidly connected with an odour trap 24.

(10) Furthermore, an appliance outlet 9, e.g. in form of an outlet pipe, protrudes into the third chamber 8 up to the height of the level N3. Finally, the third chamber 8 comprises a security overflow 23.

(11) The first chamber 6 is fluidly connected with the appliance outlet 9 through a wastewater line 28 in which a wastewater pump 27, preferably comprising a dehumidifying function, is arranged.

(12) The second chamber 7 is fluidly connected with the cooking space 3 through a circulation line 26 in which a circulation pump 25 is arranged.

(13) The third chamber 8 is further provided with a temperature sensor 16.

(14) As an additional component, the cooking appliance according to the disclosure corresponding to the embodiment of FIG. 1 has a cooling water supply device 10, for example comprising a supply line 11, leading into the third chamber 8 above the level N3 in the exemplary case. In the supply line 11 a shut-off device, preferably in form of a valve 18, is provided by means of which the supply of cooling water through the supply line 11 can be controlled or rather regulated.

(15) In FIG. 2 a second embodiment of the cooking appliance 1 according to the disclosure is shown, wherein all components structurally and functionally corresponding to those of FIG. 1 are denoted by the same reference numbers. Insofar, the preceding description of FIG. 1 can be referred to. The embodiment of the cooking appliance 1 further comprises a steam generator 31 fluidly connected with the cooking space 3 through a steam line 36.

(16) In addition, the steam generator 31 has a shut-off device for the water supply configured to be opened and closed, which can be configured as a valve 33, for example.

(17) In addition, the steam generator 31 is fluidly connected with the third chamber 8 through a draining line 35 in which a pump 34 is arranged, wherein the draining line 35 herein leads into the appliance outlet 9. Thus, particles from the steam generator can directly be conveyed into the appliance outlet 9.

(18) In this embodiment the first chamber 6 is provided with a temperature sensor 15, wherein a temperature sensor 17 in the supply line 11 and a temperature sensor 14 in the appliance outlet 9 are also provided.

(19) If it is intended in the embodiments according to FIGS. 1 and 2 to feed wastewater into a sewage system, cooling water is fed into the third chamber 8 through the cooling water supply device 10 depending on the quantity and the temperature of the heated wastewater to be discharged, wherein it is possible for example to feed cooling water into the third chamber 8 prior to the supply of wastewater through the wastewater line 28, in order to pre-cool the appliance outlet 9 and to be able to feed the heated wastewater into the cooling water flow for enabling the desired lowering of the temperature in a secure way.

(20) The third embodiment of the cooking appliance 1 of FIG. 3 according to the disclosure substantially corresponds to the embodiment of FIG. 2, wherein in turn all components in FIG. 3 structurally and functionally corresponding to each other are denoted by the same reference numbers as in FIG. 2. Insofar, the description of FIG. 2 can be referred to.

(21) In the embodiment of FIG. 3 however, it is provided that the supply line 11 protrudes into an orifice area 12 of the appliance outlet 9, that means at least to approximately the height of the level N3. Furthermore, the supply line 11 can be provided with a nozzle configured to inject the cooling water into the appliance outlet 9 directly. Hereby, the supply line 11 can end above the orifice area 12 in the third chamber 8.

(22) In addition, in this embodiment a mixing device 13 is provided as a particularly preferred feature which is arranged in the appliance outlet 9 beneath the introduction point of the wastewater line 28. For example, this mixing device 13 can be configured as a baffle plate fixable in the appliance outlet 9 by means of an appropriate fastening device 19. The temperature sensor 14 provided in the appliance outlet 9 can alternatively be arranged at the mixing device or rather the baffle plate 13. The cooking appliance 1 of the embodiment according to FIG. 3 is further provided with a temperature sensor 32 mounted at the steam generator 31.

(23) If it is intended to feed hot water from the steam generator 31 and/or the wastewater line 28 into the appliance outlet 9, in this embodiment it is preferably possible to pre-cool the appliance outlet 9 prior to the feed of hot water into it as the supply line 11 introduces cooling water into the third chamber and so into the appliance outlet 9. Thereupon, it is possible to feed hot water from the steam generator 31 and/or the wastewater line 28 into the appliance outlet 9, wherein the mixing device 13 further enhances the mixture of hot water and cooling water which additionally perfects the lowering towards the temperature limit to be complied and especially reduces the lowering time.

(24) In case that the temperature in the first chamber 6 is very high and the cooling water to be fed into is relatively warm, the pump 27 and/or 34 can correspondingly be timed for a sufficient cooling of the wastewater to be discharged to adapt the water volume flows of the wastewater to be cooled and of the cooling water such that according to the principle of conservation of energy the water temperature of the water to be discharged does not exceed the legal limits.

(25) As explained at the beginning, therefore a control/regulating device can be provided which is symbolized by the block 40 in FIG. 1, representative for all embodiments according to FIG. 1, 2 or 3. This control/regulating device 40 can be arranged in signal connection with all sensors provided in the system, as in the exemplary case of FIG. 1 with the sensor 16, and control or rather regulate the corresponding components to be controlled or rather regulated, as in the exemplary case the pumps 25, 27 as well as the shut-off device 18.

(26) Additionally, it has to be emphasized that in the shown exemplary cases the water traps W1, W2 and W3 have different levels each. However, it is also possible that the levels of the three water traps W1, W2 and W3 have the same height.

(27) Furthermore, the used term “cooking appliance, in particular commercial cooking appliance” should be understood as including any type of food treatment appliances. Accordingly, these can be cooking appliances operated with hot air and/or steam (combi steamers), grills, microwave ovens and common electric cookers as well as coffee-makers, beverage dispensers and/or ice makers.

(28) Besides the preceding written disclosure of the disclosure, hereby supplementing the disclosure, explicit reference shall be made to the graphic representation of the disclosure in FIGS. 1 to 3.

LIST OF REFERENCE SIGNS

(29) 1 Cooking appliance 2 Housing 3 Cooking space 4 Housing outlet/cooking space outlet 5 Condenser 6 First chamber 7 Second chamber 8 Third chamber 9 Appliance outlet 10 Cooling water supply device 11 Supply line 12 Orifice area 12′ Heating device 13 Mixing device/baffle plate 14, 15, 16, 17, 32 Temperature sensor 18 Shut-off device/valve 19 Holding device 20 Fan propeller 21 Motor 22 Dehumidifier flap 23 Security overflow 24 Odour trap 25 Circulation pump 26 Circulation line 27 Wastewater pump, preferably with dehumidifying function 28 Wastewater line 29 Exhaust air pipe 30 Fresh air pipe 31 Steam generator 33 Shut-off device, configured to be opened and closed 34 Pump 35 Draining line 36 Steam line 37 Overflow 38 Connecting piece 39 Heating device of the cooking space 3 40 Control/regulating device W1-W3 Water traps N1-N3 Height/level of the water traps W1 to W3