WO2011086506A2

WO2011086506A2 - Household appliance

Info

Publication number: WO2011086506A2
Application number: PCT/IB2011/050131
Authority: WO
Inventors: Jose-Ramon Garcia Jimenez; Alfonso Lorente Perez; Daniel Moros Sanz; Jose Luis Salvador Lacosta; Eva Maria Sanchez Garcia
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2010-01-18
Filing date: 2011-01-12
Publication date: 2011-07-21
Also published as: ES2388306B1; ES2388306A1; WO2011086506A3; EP2526343A2

Abstract

The invention relates to a household appliance, in particular a cooking hob device, comprising at least one heat accumulator unit (10; 10a) which has at least one material (12; 12a) that passes through a phase transition when heated to a certain operating temperature of the device. In order to achieve an efficient design, it is proposed that the household appliance comprises at least one coupling unit (14; 14a; 14b) that thermotechnically couples the heat accumulator unit (10; 10a) in at least one operating state to at least one electronic component (16; 16b).

Description

Domestic appliance device

The invention is based on a domestic appliance device according to the preamble of claim 1.

From the document DE 102 26 657 A1 a domestic appliance device with a heat storage unit is known, which comprises a material which undergoes a phase transition during an operating process during heating to a specific device operating temperature. The heat storage unit is installed in a door.

From the document DE 10 2004 025 915 A1 a domestic appliance device is known, which has a heat pipe, by means of which heat is transported. The object of the invention is in particular to provide a generic device with improved properties in terms of efficient construction. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

The invention relates to a domestic appliance device, in particular a hob device, with at least one heat storage unit, which has at least one material which undergoes a phase transition when heated to a specific device operating temperature.

It is proposed that the domestic appliance device has at least one coupling unit, which thermally couples the heat storage unit with at least one electronic component in at least one operating state. A "heat storage unit" is to be understood in particular as meaning a unit which is provided for a repeated absorption and release of heat energy and which is intended to store heat, the unit differing from a heat pipe all operations in which the heat storage unit continuously absorbs heat or stores its stored te heat quantity remains constant, at most once the phase transition. Particularly preferably, the material remains at a heat absorption of the heat storage unit at the same location and in particular immobile to a housing of the home appliance device. A "phase transition" is to be understood as meaning, in particular, a conversion of one or more phases, such as a solid phase, into at least one other phase, such as a liquid phase, by a "device operating temperature" at least a portion of a device during at least one operating operation. A "coupling unit which thermally couples the heat storage unit to an electronic component" is to be understood in particular as meaning a unit which is provided for transferring a considerable part of an amount of heat which is emitted by the electronic component during at least one operating operation to the heat storage unit By "a considerable part" of an amount of heat, in particular at least 5%, preferably at least 20%, preferably at least 40% and particularly preferably at least 70% of the amount of heat should be understood. By "provided" is intended to be understood in particular specifically designed and / or specially equipped and / or specially programmed An efficient construction can be achieved with an embodiment according to the invention In particular, an effective cooling of the electronic component, in particular in the case in which the electronic component In particular, a quiet cooling can be achieved, in particular, furniture in which the domestic appliance device is installed in a fully assembled state is, free of recesses and openings, which are provided for a passage of cooling air streams are formed.

It is also proposed that the domestic appliance device has the electronic component and the electronic component rests against the material in at least one operating state and / or is embedded in the material. By the fact that the electronic component is "embedded in the material" should be understood in particular that at least more than 50%, preferably at least more than 70% and more preferably at least more than 90% of an entire surface of the electronic component is applied to the material. As a result, effective cooling can be achieved. Preferably, the domestic appliance device has at least one heat-conducting element, which is intended to conduct heat generated by the electronic component, and which has a higher thermal conductivity than the material. By the fact that the "heat-conducting element is intended to conduct heat generated by the electronic component", it should be understood in particular that the heat-conducting element conducts at least a considerable part of an amount of heat emitted by the electronic component in at least one operating operation Advantageously, the domestic appliance device has at least one liquid container which forms at least one part of the coupling unit, whereby a structurally simple construction can be achieved.

It is also proposed that the coupling unit has at least one electrical insulator. This allows a cost-effective and stable construction can be achieved.

Preferably, the heat storage unit forms a device main cooling unit. A "device main cooling unit" is to be understood in particular as a unit which is intended to receive at least a considerable portion of a total amount of heat during operation and preferably during cooking processes, which is generated during the operation of a domestic appliance having the domestic appliance device In particular, it can be achieved that the domestic appliance device is free of fan units which are provided for blowing out heat from the domestic appliance device.

Preferably, a phase transition temperature of the phase transition is within an operating temperature range of an insulated gate bipolar transistor. A "phase transition temperature" is to be understood in particular as meaning a temperature at which the phase transition takes place when the material is heated. "Operating temperature range" of an insulated gate bipolar transistor is understood to mean, in particular, the temperature range lying between 25 ° C and 135 ° C , In this way, an effective heat storage can be achieved. Advantageously, the material is an electrical insulator. As a result, an efficient heat storage can be achieved. In particular, it can be achieved that an amount of heat generated by the electronic component is effectively transferred to the material. In particular, it can be achieved that the electronic component is applied directly to the material.

In a preferred embodiment of the invention, the material comprises paraffin wax. This allows a cost-effective design can be achieved. Preferably, the domestic appliance device has at least one induction heating unit, which has the electronic component. An "induction heating unit" is to be understood as meaning, in particular, a heating unit which is provided for generating magnetic fields and which is provided for generating eddy currents in cookware for heating the cookware, thereby allowing user-friendly heating to be achieved.

Furthermore, it is proposed that the domestic appliance device has at least one fastening unit which fixes the heat storage unit in at least one operating state to a hotplate unit fitting. In this way, an efficient use of energy can be achieved. In particular, it can be achieved that an energy stored by the heat storage unit energy is transferred to the hotplate unit, whereby this energy is used in particular for keeping warm on the cooking plate unit arranged food. Advantageously, the domestic appliance device has at least one energy conversion unit, which is provided to convert heat energy of the heat storage unit into an energy present in at least one other energy form. As a result, a low energy consumption can be achieved. In a preferred embodiment of the invention, the domestic appliance device has at least one heat-conducting unit, which transports heat from the heat storage unit to at least one domestic appliance in at least one operating operation, which is free of the heat storage unit. Under a "heat conduction unit, which transports heat from the heat storage unit to at least one household appliance, which is free of the Heat storage unit is ", should be understood in particular a unit which is intended to transport at least a significant portion of a heat storage unit absorbed amount of heat to at least one domestic appliance, which is free of the heat storage unit.

Furthermore, a domestic appliance is proposed with a domestic appliance device, whereby an efficient construction can be achieved. Furthermore, a domestic appliance manufacturing method, in particular for producing a domestic appliance device, is proposed in which a liquid is introduced into a liquid container. As a result, an efficient construction can be achieved.

Further advantages emerge from the following description of the drawing. In the drawing, embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations. Show it:

1 shows a hob with a domestic appliance device according to the invention,

2 is a view of a part of the domestic appliance device with a liquid container,

3 shows a view of a baking oven and the domestic appliance device designed as a hob device,

Fig. 4 is a section through an alternative embodiment of a hob device and

5 shows a view of an alternative embodiment of a cooktop device, wherein a bottom of a liquid container and a heat storage unit of the cooktop device are not shown.

FIG. 1 shows a plan view of a domestic appliance designed as an induction hob with a domestic appliance device according to the invention, which is designed as a hob appliance. is forming. The cooktop apparatus has a heat storage unit 10, which is formed from a material 12 (FIGS. 1 and 2) which is paraffin wax and, in particular, in cooking processes in which food to be cooked, which has a high heat capacity, over a relatively long period of time, in particular half an hour or one hour, when cooked, undergoes a phase transition, namely melting, through. In principle, it is also conceivable that the material 12 is a material that evaporates during cooking. Such a material 12 is especially water. In such cooking operations, the hob device is heated to a specific device operating temperature. In the phase transition, the material 12 absorbs energy without raising its temperature. The material 12 is further an electrical insulator and has a high heat capacity. In addition, the hob device has an electronic component 16. The electronic component 16 may be part of a rectifier or an inverter of the cooktop apparatus. The electronic component 16 is a switching element and constituted by a power transistor which is an insulated gate bipolar transistor 16 '. In principle, the electronic component 16 may also be formed by one or more diodes and / or by a plurality of insulated gate bipolar transistors. A temperature at which the material 12 passes through the phase transition lies in a working temperature range of the bipolar transistor 16 '. Furthermore, the material 12 is an electrical insulator.

Furthermore, the hob device has a coupling unit 14, which thermally couples the heat storage unit 10 with the electronic component 16. For this purpose, the coupling unit 14 has a parallelepipedic liquid container 20 which has a parallelepipedic cavity in which the heat storage unit 10 is arranged. The heat storage unit 10 has a shape of a cuboid having a length of 350 mm, a width of 170 mm and a height of 22 mm. The electronic component 16 is attached to the liquid container 20 formed of a metal. Furthermore, the coupling unit 14 on an electrical insulator 22 which is formed by a film and which is fastened together with the electronic component 16 by a screw 42 of the hob device to the liquid container 20. The insulator 22 is disposed between the electronic component 16 and the liquid container 20. Furthermore, the electronic component 16 abuts against the insulator 22 and the insulator 22 against the liquid container 20. In addition, the material 12 abuts against the liquid container 20. As a result, the electronic component 16 and the heat storage unit 10 are physically separated by the insulator 22 and the liquid container. 20, whereby an effective heat conduction from the electronic component 16 to the heat storage unit 10 is possible. Together with the electronic component 16, four further electronic components are attached to the liquid container 20. In principle, more than four electronic components can be attached to the liquid container 20.

In addition, the heat storage unit 10 forms a unit main cooling unit 24. The unit main cooling unit 24 takes up a considerable part of a heat generated within the hob device and can, for example, slowly after completion of the cooking processes, for example, to its surroundings, without giving the energy is used, with no additional components, such as a fan, necessary for the release of energy. The hob is free of fans. Furthermore, the hob device has an induction heating unit 28 with coils 44, which are provided for generating eddy currents in a cookware and thus provided for heating the cookware (Figure 1). The induction heating unit 28 has the electronic component 16 (FIGS. 1 and 2). An energy conversion unit 34 (FIG. 1) of the cooktop apparatus is provided to convert heat energy of the heat storage unit 10 into electrical energy. For this purpose, the energy conversion unit 34 has a Peltier element (not shown) which generates a current flow by means of the heat energy of the heat storage unit 10.

Furthermore, the hob device has a heat-conducting unit 36 which, during cooking processes, transfers heat from the heat storage unit 10 to an oven

Domestic appliance 38 (Figure 3) transported. A rod 48 of metal, such as aluminum, conducts heat released from the heat storage unit 10 to a cooking chamber 50 of the oven. In principle, the heat-conducting unit 36 can also be formed by a heat pipe and / or by water, which in particular can circulate. The electrical energy can be used in particular during a standby operating mode of the cooktop. In principle, the domestic appliance 38 can also be designed as a fryer or dishwasher. In a production of the hob device, the material 12 is added in the liquid state in the liquid container 20 and the liquid container 20 is subsequently closed. In principle, the heat storage unit 10 as a cooling unit together with another cooling unit, such. B. a fan unit, especially in extreme heat to cool the hob device can be used.

FIGS. 4 and 5 show alternative embodiments. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, however, the reference numerals of the embodiment in Figures 4 and 5, the letter "a" or "b" added. The following description is essentially limited to the differences from the exemplary embodiment in FIGS. 1 to 3, wherein reference can be made to the description of the exemplary embodiment in FIGS. 1 to 3 with regard to components, features and functions remaining the same.

FIG. 4 shows a section through an alternative embodiment of a hob device. The hob apparatus includes a fixing unit 30a, a heat storage unit 10a, a liquid container 20a, and a hot plate unit 32a. The fixing unit 30a is formed by the hot plate unit 32a and the trough-shaped liquid container 20a, between which the heat storage unit 10a is enclosed. Further, the heat storage unit 10a abuts against the hot plate unit 32a formed as a glass-ceramic plate. A region of the glass ceramic plate above the heat storage unit 10a serves as a warming plate for food to be cooked.

Figure 5 is a bottom view of an alternative embodiment of a cooktop apparatus wherein a bottom of a liquid container 20b of the cooktop apparatus and a heat storage unit of the cooktop apparatus are not shown. The heat storage unit is disposed in the liquid container 20b. Further, the cooktop apparatus has a plurality of electronic components 16b embedded in the heat storage unit formed by paraffin wax. Furthermore, the hob device comprises metal-formed heat-conducting elements 18b, which abut against one of the electronic components 16b and which are connected to the heat storage device. abutment unit. The heat-conducting elements 18b have a higher thermal conductivity than a material 12b, from which the heat storage unit is formed.

reference numeral

10 heat storage unit

12 material

14 coupling unit

16 component

16 'bipolar transistor

18 heat-conducting element

20 fluid container

22 insulator

24 unit main cooling unit

28 induction heating unit

30 fixing unit

32 hotplate unit

34 energy conversion unit

36 heat-conducting unit

38 home appliance

40 liquid

42 screw

44 coils

48 pole

50 Garroom muffle

Claims

claims

Domestic appliance device, in particular hob device, having at least one heat storage unit (10; 10a) which has at least one material (12; 12a) which undergoes a phase transition when heated to a specific device operating temperature,

marked by

at least one coupling unit (14; 14a; 14b) which thermally couples the heat storage unit (10; 10a) with at least one electronic component (16; 16b) in at least one operating state.

Domestic appliance according to claim 1,

marked by

the electronic component (16b), which abuts the material (12) in at least one operating state and / or is embedded in the material (12).

Domestic appliance device according to one of claims 1 or 2,

marked by

at least one heat conducting element (18b) which is intended to conduct heat generated by the electronic component (16b) and which has a higher thermal conductivity than the material (12).

Domestic appliance device according to one of the preceding claims,

marked by

at least one liquid container (20; 20a; 20b) which forms at least part of the coupling unit (14; 14a; 14b).

Domestic appliance device according to one of the preceding claims,

characterized in that

the coupling unit (14; 14a; 14b) has at least one electrical insulator (22).

6. Domestic appliance device according to one of the preceding claims, characterized in that

the heat storage unit (10; 10a) forms a unit main cooling unit (24; 24a).

7. Domestic appliance device according to one of the preceding claims,

characterized in that

a phase transition temperature of the phase transition is within a working temperature range of an insulated gate bipolar transistor (16 ', 16'b).

8. Domestic appliance device according to one of the preceding claims,

characterized in that

the material (12; 12a) is an electrical insulator.

9. domestic appliance device according to one of the preceding claims,

characterized in that

the material (12; 12a) comprises paraffin wax.

10. Domestic appliance device according to one of the preceding claims,

marked by

at least one induction heating unit (28) comprising the electronic component (16).

1 1. Domestic appliance device according to one of the preceding claims,

marked by

at least one fastening unit (30a), which fixes the heat storage unit (10a) in at least one operating state to a hotplate unit (32a).

12. Domestic appliance device according to one of the preceding claims, characterized by

at least one energy conversion unit (34), which is intended to convert heat energy of the heat storage unit (10) into an energy present in at least one other energy form.

13. Domestic appliance device according to one of the preceding claims,

marked by

at least one heat-conducting unit (36), which transports heat from the heat storage unit (10) to at least one domestic appliance (38) during at least one operating operation, which is free from the heat storage unit (10).

14. Domestic appliance with a domestic appliance device according to one of claims 1 to 13.

A domestic appliance manufacturing method, in particular for manufacturing a domestic appliance device according to any one of claims 1 to 13, wherein a liquid (40; 40a) is filled in a liquid container (20; 20a).