CN213820982U - Milk heating automation equipment - Google Patents

Abstract

The utility model discloses a milk heating automation equipment, including the pot body, electric heater unit, miniature pump and pot courage, the bottom of the pot body is provided with the heating water cavity, be provided with annular water cavity along circumference in the lateral wall of the pot body, the top in annular water cavity with be provided with first communication water channel between the heating water cavity, electric heater unit is used for right the water heating of heating water cavity, miniature pump set up in annular water cavity with between the heating water cavity, be used for with the water of heating water cavity is carried extremely in the annular water cavity, the pot courage set up in the pot internal and with the laminating of the internal surface of the pot body. According to the utility model discloses milk heating automation equipment not only can heat milk evenly, can not heat the temperature of milk too high moreover, and then is difficult to cause milk nutrition to run off.

Description

Milk heating automation equipment

Technical Field

The utility model relates to a heating device, in particular to milk heating automation equipment.

Background

Milk is one of the oldest natural beverages, is milk squeezed from female cows, mainly comprises water, fat, phospholipid, protein, lactose, inorganic salt and the like, and is known as 'white blood'.

Milk can help people to replenish nutrients, but fresh milk is generally transported and stored in a refrigerated environment, so that for many people, such as people with bad intestines and stomach, the milk is usually heated for use. The traditional milk heating method is to pour milk into a heating pan and then heat the milk to the desired temperature. First, conventional heating pans tend to heat the milk too high a temperature, resulting in loss of milk nutrients. Secondly, the traditional heating pot is not uniformly heated, and the condition that the milk at the bottom of the pot is burnt or even scorched is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a milk heating automation equipment not only can heat milk evenly, can not too high with the temperature heating of milk moreover, and then is difficult to cause milk nutrition to run off.

According to the utility model discloses milk heating automation equipment, include:

the pot comprises a pot body, wherein a heating water cavity is arranged at the bottom end of the pot body, an annular water cavity is arranged in the side wall of the pot body along the circumferential direction, and a first communication water channel is arranged between the top end of the annular water cavity and the heating water cavity;

the electric heating device is used for heating the water in the heating water cavity;

the miniature water pump is arranged between the annular water cavity and the heating water cavity and is used for conveying water in the heating water cavity into the annular water cavity;

the pot liner is arranged in the pot body and is attached to the inner surface of the pot body.

According to the utility model discloses milk heating automation equipment has following technological effect at least: water can all be stored in heating water cavity and annular water cavity, when needing to heat milk, pour milk into the pot courage in, then with electric heater unit circular telegram, electric heater unit circular telegram back is to the water heating of heating water intracavity, when the water heating of heating water intracavity is to the settlement temperature, start miniature pump, miniature pump can carry the hot water of heating water intracavity to the annular water cavity, when the water of annular water intracavity is more, the colder water of annular water intracavity can enter into through first water passage from the top and heat the water intracavity, thereby by electric heater unit heating, the reciprocating cycle, can make the water of heating water cavity and annular water intracavity all heat to the settlement temperature, the water after heating water cavity and annular water intracavity can pass through the pot body with the heat and transmit to the pot courage on, thereby the heat on the pot courage heats milk. The utility model discloses milk heating automation equipment, because the hot water that adds the hot water intracavity can heat the bottom of pot courage, the hot water of annular water intracavity can heat the lateral wall of pot courage, and then the bottom and the lateral wall of pot courage can be heated simultaneously, thereby the bottom and the lateral wall of pot courage can heat milk simultaneously, efficiency when heating milk is higher, and milk is heated more evenly, local high temperature can not appear and lead to the condition that milk burns out or even scorching, electric heater unit only need concentrate the water that adds the hot water intracavity and heat simultaneously, and need not heat the water of annular water intracavity, it is more convenient to heat, heating efficiency is higher, and the required size of electric heater unit is littleer moreover, make the utility model discloses milk heating automation equipment structure is compacter, and the size is littleer. Furthermore, the utility model discloses milk heating automation equipment passes through water transfer heat, also is exactly through water bath heating, and then is difficult to appear the too high phenomenon of milk temperature heating to be difficult to cause milk nutrition to run off.

According to the utility model discloses a some embodiments, the top in heating water cavity is provided with the inlet tube, the bottom in heating water cavity is provided with the outlet pipe, the inlet tube with all be provided with first solenoid valve on the outlet pipe.

According to some embodiments of the utility model, the pot body in the top in heating water cavity is provided with the intake antrum, the bottom in intake antrum with the top intercommunication in heating water cavity, the inlet tube with the intake antrum intercommunication.

According to some embodiments of the utility model, the first water passage is kept away from the one end of annular water cavity with the intake antrum intercommunication.

According to the utility model discloses a some embodiments, the bottom of annular water cavity with be provided with second intercommunication water course between the heating water cavity, be provided with the second solenoid valve on the second intercommunication water course.

According to some embodiments of the invention, the micro-water pump is in communication with the bottom end in the annular water cavity.

According to some embodiments of the utility model, milk heating automation equipment still includes the pot shell, the pot body set up in the pot shell, electric heater unit is provided with the electric heat piece, the electric heat piece set up in bottom in the pot shell is hugged closely the bottom of the pot body.

According to some embodiments of the utility model, the electric heating piece include the substrate and be double helix form set up in heating element on the substrate, heating element's both ends all are connected with first electrode, heating element sets up in two between the first electrode, heating element's middle part forms the second electrode.

According to some embodiments of the utility model, be provided with display screen and controller on the pot shell, it is provided with temperature sensor to add the intracavity of hot water, temperature sensor the display screen the electricity generate heat piece and micro-water pump all with controller electric connection.

According to some embodiments of the present invention, the pot body is made of microcrystalline glass.

According to some embodiments of the utility model, the pot shell on in the top of intake antrum is provided with the intake antrum, the inlet tube is kept away from the one end of intake antrum with the intake antrum intercommunication.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the pan body;

FIG. 3 is a schematic structural diagram of an electric heating device;

reference numerals:

the water boiler comprises a boiler body 100, a heating water cavity 101, an annular water cavity 102, a first communicating water channel 103, a second communicating water channel 104, a water inlet pipe 105, a water outlet pipe 106, a water inlet cavity 107 and a temperature sensor 108; an electric heating device 200, an electric heating sheet 201, a base material 202, a heating element 203, a first electrode 204 and a second electrode 205; a micro-water pump 300; a pot liner 400; a pot shell 500, a display screen 501, a controller 502 and a water inlet tank 503; a pan cover 600.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An automatic milk heating apparatus according to an embodiment of the present invention is described below with reference to fig. 1 to 3.

According to the utility model discloses milk heating automation equipment, as shown in fig. 1 and 2, including the pot body 100, electric heater unit 200, micro water pump 300 and pot courage 400, the bottom of the pot body 100 is provided with heating water cavity 101, be provided with annular water cavity 102 along circumference in the lateral wall of the pot body 100, the top of annular water cavity 102 and be provided with first water channel 103 between heating water cavity 101, electric heater unit 200 is used for heating the water in heating water cavity 101, micro water pump 300 sets up between annular water cavity 102 and heating water cavity 101, be used for carrying the water in heating water cavity 101 to annular water cavity 102 in, pot courage 400 sets up in the pot body 100 and laminates with the internal surface of the pot body 100.

In this embodiment, water may be stored in both the heating water cavity 101 and the annular water cavity 102, when the milk needs to be heated, the milk is poured into the inner pot 400, the electric heating device 200 is powered on to heat the water in the heating water cavity 101, when the water in the heating water cavity 101 is heated to a set temperature, the micro-water pump 300 is started, the micro-water pump 300 can deliver the hot water in the heating water cavity 101 to the annular water cavity 102, when the water in the annular water cavity 102 is large, the cold water in the annular water cavity 102 can enter the heating water cavity 101 through the first water passage 103 from the top end, and thus the cold water is heated by the electric heating device 200 and circulates back and forth, so that the water in the heating water cavity 101 and the annular water cavity 102 can be heated to the set temperature, and the water heated in the heating water cavity 101 and the annular water cavity 102 can transfer heat to the inner pot 400 through the pot body 100, the heat on the pot bladder 400 thereby heats the milk. The milk heating automation equipment of the embodiment of the utility model has the advantages that the hot water in the heating water cavity 101 can heat the bottom of the boiler liner 400, the hot water in the annular water cavity 102 can heat the side wall of the boiler liner 400, and then the bottom and the side wall of the pot liner 400 can be heated at the same time, so that the bottom and the side wall of the pot liner 400 can heat the milk at the same time, the efficiency is higher when the milk is heated, moreover, the milk is heated more uniformly, the situation that the milk is burnt or even burnt due to overhigh local temperature can not occur, meanwhile, the electric heating device 200 only needs to intensively heat the water in the heating water cavity 101, the water in the annular water cavity 102 does not need to be heated, the heating is more convenient, the heating efficiency is higher, and the required size of electric heater unit 200 is littleer moreover, makes the utility model discloses milk heating automation equipment structure of embodiment is compacter, and the size is littleer. Furthermore, the utility model discloses milk heating automation equipment passes through water transfer heat, also is exactly through water bath heating, and then is difficult to appear the too high phenomenon of milk temperature heating to be difficult to cause milk nutrition to run off.

It should be noted that, the pot body 100 and the pot liner 400 may both be a common round pot-shaped structure, a placing cavity adapted to the outer surface of the pot liner 400 may be disposed in the pot body 100, the pot liner 400 is disposed in the built-in cavity and attached to the inner surface of the built-in cavity, in this embodiment, the circumferential disposition of the annular water cavity 102 on the side wall of the pot body 100 means that the annular water cavity 102 surrounds the side wall of the pot body 100 for a circle, and then the side wall of the pot liner 400 is heated for a circle, the top end of the annular water cavity 102 may be close to the top end of the pot body 100, the bottom end of the annular water cavity 102 may be close to the bottom end of the pot body 100, the horizontal dimension of the heating water cavity 101 may be adapted to the bottom end of the pot liner 400, and then the hot water in the heating water cavity 101 and the annular water cavity 102 may be transferred to most of the surface of the pot liner 400, so that the pot liner 400 is heated more uniformly, the heating efficiency is higher, and further the milk in the pot liner 400 is heated more uniformly, the heating efficiency is higher. The miniature water pump 300 is a water pump with a small size, the water inlet end of the miniature water pump 300 is communicated with the heating water cavity 101, the water outlet end of the miniature water pump 300 is communicated with the annular water cavity 102, and therefore water can be conveyed to a higher position in the annular water cavity 102 from a lower position in the heating water cavity 101. It can be understood that, the water in the heating water cavity 101 and the annular water cavity 102 needs to be as much as possible, for example, the water in the heating water cavity 101 can be filled, and then the heat of the hot water in the heating water cavity 101 can directly enter the annular water cavity 102 from the pot body 100 on the top end of the heating water cavity 101, the heat transfer efficiency is higher, the water in the annular water cavity 102 can be close to the top end, and then the heat transfer area of the pot body 100 is wider, the heat transfer efficiency is higher, and the heat transfer is more uniform. In addition, the inner surface of pan body 100 and the portions between annular water chamber 102 and the inner surface of pan body 100 and heating water chamber 101 need to be made of heat conductive material to facilitate the transfer of heat.

In some embodiments of the present invention, as shown in fig. 2, a water inlet pipe 105 is disposed on the top end of the heating water chamber 101, a water outlet pipe 106 is disposed on the bottom end of the heating water chamber 101, and a first electromagnetic valve is disposed on each of the water inlet pipe 105 and the water outlet pipe 106. The annular water cavity 102 can be provided with the outside water pipe that communicates or communicate heating water cavity 101, can be provided with the solenoid valve on the water pipe equally, and when annular water cavity 102 and the water live time that heats in the water cavity 101 is too long, can produce the incrustation scale, consequently need change to avoid blocking water cavity or micro-water pump 300. When the water in the annular water cavity 102 and the heating water cavity 101 is replaced, the electromagnetic valve on the water pipe and the first electromagnetic valve on the water outlet pipe 106 are opened, the water in the heating water cavity 101 and the annular water cavity 102 can be replaced, then the first electromagnetic valve on the water outlet pipe 106 is closed, then the first electromagnetic valve on the water inlet pipe 105 is opened, the water inlet pipe 105 is connected with a water source, new water can be input into the heating water cavity 101, then the micro water pump 300 is started, and the new water can be input into the annular water cavity 102, so that the operation is simple and convenient.

In some embodiments of the present invention, as shown in fig. 2, the pot body 100 is provided with a water inlet chamber 107 above the heating water chamber 101, the bottom end of the water inlet chamber 107 is communicated with the top end of the heating water chamber 101, and the water inlet pipe 105 is communicated with the water inlet chamber 107. Water output from the water inlet pipe 105 firstly enters the water inlet cavity 107, and the water inlet cavity 107 is arranged above the heating water cavity 101, so that water flowing into the heating water cavity 101 from the bottom end of the water inlet cavity 107 can completely fill the heating water cavity 101, heat of hot water in the heating water cavity 101 can directly enter the annular water cavity 102 from the pot body 100 on the top end of the heating water cavity 101, and the heat transfer efficiency is higher.

In some embodiments of the present invention, as shown in fig. 2, an end of the first communicating water passage 103 away from the annular water chamber 102 communicates with the water inlet chamber 107. Furthermore, the water output from the first communication water passage 103 can also completely fill the heating water cavity 101, and further, the heat of the hot water in the heating water cavity 101 can directly enter the annular water cavity 102 from the pot body 100 at the top end of the heating water cavity 101, so that the heat transfer efficiency is higher. It should be noted that the end of the first communication water channel 103 away from the annular water cavity 102 refers to: in the water conveying direction, the first communicating water passage 103 is away from the end thereof communicating with the annular water chamber 102, rather than the vertical distance between the first communicating water passage 103 and the annular water chamber 102.

In some embodiments of the present invention, as shown in fig. 1 and 2, a second communication water channel 104 is disposed between the bottom end of the annular water cavity 102 and the heating water cavity 101, and a second electromagnetic valve is disposed on the second communication water channel 104. When the water in the annular water cavity 102 needs to be replaced, the second electromagnetic valve on the second communication water channel 104 is directly opened, and the water in the annular water cavity 102 can enter the heating water cavity 101 through the second communication water channel 104 and then is discharged by the water outlet pipe 106. In this embodiment, the annular water cavity 102 does not need to be provided with a pipeline directly communicated with the outside, so that the structure is simpler and the operation is more convenient.

In some embodiments of the present invention, the micro-pump 300 is in communication with the bottom end of the annular water chamber 102. And then can ensure that the hot water in the heating water cavity 101 spreads to the top of annular water cavity 102 from the bottom of annular water cavity 102 up to make all positions of annular water cavity 102 all be full of hot water, thereby make the lateral wall homoenergetic of the pot body 100 be heated, it is faster to be heated, it is more even to be heated.

In some embodiments of the present invention, as shown in fig. 1, the milk heating automation device further includes a pot 500, the pot body 100 is disposed in the pot 500, the electric heating device 200 is provided with an electric heating sheet 201, and the electric heating sheet 201 is disposed at the bottom end of the pot 500 and clings to the bottom end of the pot body 100. The pot shell 500 is used for protecting the pot body 100 and can play a decorative role, and the electric heating sheet 201 is a sheet-shaped electric element which specially converts electric energy into heat energy, is low in price, convenient to use, convenient to install and free of pollution, and is widely used in various heating occasions, such as an electric rice cooker and the like. The electric heating sheet 201 is tightly attached to the bottom end of the pot body 100 and can be matched with the outer diameter of the heating water cavity 101 along the horizontal direction. The electric heating sheet 201 generates heat after being electrified, so that the heat is transferred into the heating water cavity 101 through the pot body 100, the water in the heating water cavity 101 is heated, the operation is simple and convenient, and the direct contact with the water in the heating water cavity 101 is not needed, so that the electric heating device is safer and more reliable. Of course, the electric heating device 200 may also be an electric heating tube, and the heating end of the electric heating tube directly extends into the heating water cavity 101. The pot cover 600 can be arranged above the pot shell 500, so that heat loss can be prevented, dust can be prevented from entering the pot container 400, and milk is prevented from being polluted.

In some embodiments of the present invention, as shown in fig. 3, the electric heating sheet 201 includes a substrate 202 and a heating element 203 disposed on the substrate 202 in a double spiral shape, the two ends of the heating element 203 are both connected with first electrodes 204, the heating element 203 is disposed between the two first electrodes 204, and the middle of the heating element 203 forms a second electrode 205. The substrate 202 can be a mica sheet or a ceramic sheet, the mica sheet and the ceramic sheet have good insulation effect and can bear larger pressure, and the heating element 203 can be a nickel alloy resistor or an iron-chromium alloy resistor or other common heating elements. In this embodiment, the two ends of the heating element 203 are connected with the first electrodes 204, the heating element 203 is disposed between the two first electrodes 204, the second electrode 205 is formed in the middle of the heating element 203, and after the first electrode 204 and the second electrode 205 are energized, the heating element 203 forms a parallel double-heating structure, even if a half of the heating element 203 is damaged, the remaining half of the heating element 203 can still generate heat, so as to improve the service life of the heating element 203, and meanwhile, the heating element 203 is distributed in a double-helix shape, so that the heat transfer of the electric heating sheet 201 is more uniform. It should be noted that the heating element 203 may be a long strip-shaped sheet structure. Under the certain condition of substrate 202 surface area, heating element 203's length can be longer for heating element 203's resistance value is bigger like this to can improve the heating efficiency, simultaneously, heating element 203 that is sheet structure makes the area of contact with pot body 100 surface bigger, has further improved heat transfer efficiency.

In some embodiments of the present invention, the pot shell 500 is provided with a display screen 501 and a controller 502, the heating water cavity 101 is provided with a temperature sensor 108, and the temperature sensor 108, the display screen 501, the electric heating sheet 201 and the micro water pump 300 are all electrically connected to the controller 502. Specifically, the output end of the temperature sensor 108 is electrically connected with the input end of the controller 502, the output end of the controller 502 is electrically connected with the display screen 501, the electric heating sheet 201 and the input end of the micro water pump 300 are electrically connected, the electric heating sheet 201 heats water in the heating water cavity 101, when the temperature sensor 108 detects that the water in the heating water cavity 101 is heated to a set temperature, a transmission signal is sent to the controller 502, the controller 502 further controls the micro water pump 300 to work, water circulation is realized, then when the temperature sensor 108 detects that circulating water in the heating water cavity 101 reaches a specific temperature, the transmission signal is sent to the controller 502, the controller 502 further controls the micro water pump 300 and the electric heating sheet 201 to stop working, the temperature of water heating is avoided being too high, and meanwhile, waste of electric energy can be avoided. The controller 502 can also transmit the temperature detected by the temperature sensor 108 to the display screen 501 for display in time, so that the user can know the temperature in time. In addition, the controller 502 can also be used for controlling the opening and closing of the second electromagnetic valve and the first electromagnetic valve, so that the operation is simpler and the automation degree is higher.

In some embodiments of the present invention, the pot body 100 is made of microcrystalline glass. The microcrystalline glass has good electrical insulation performance, good heat conduction performance and good thermal stability.

In some embodiments of the present invention, as shown in fig. 1, a water inlet groove 503 is disposed above the water inlet chamber 107 on the pot shell 500, and one end of the water inlet pipe 105 far away from the water inlet chamber 107 is communicated with the water inlet groove 503. When water needs to be added into the heating water cavity 101, water is directly filled into the water inlet groove 503, so that the operation is simple, and time and labor are saved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a milk heating automation equipment which characterized in that includes:

the pot comprises a pot body (100), wherein a heating water cavity (101) is formed in the bottom end of the pot body (100), an annular water cavity (102) is formed in the side wall of the pot body (100) along the circumferential direction, and a first communication water channel (103) is formed between the top end of the annular water cavity (102) and the heating water cavity (101);

an electric heating device (200) for heating the water in the heating water chamber (101);

the miniature water pump (300) is arranged between the annular water cavity (102) and the heating water cavity (101) and is used for conveying water in the heating water cavity (101) into the annular water cavity (102);

the pot liner (400) is arranged in the pot body (100) and is attached to the inner surface of the pot body (100).

2. The automatic milk heating equipment according to claim 1, characterized in that a water inlet pipe (105) is arranged at the top end of the heating water cavity (101), a water outlet pipe (106) is arranged at the bottom end of the heating water cavity (101), and a first electromagnetic valve is arranged on each of the water inlet pipe (105) and the water outlet pipe (106).

3. The automatic milk heating equipment according to claim 2, characterized in that the pot (100) is provided with a water inlet chamber (107) above the heating water chamber (101), the bottom end of the water inlet chamber (107) is communicated with the top end of the heating water chamber (101), and the water inlet pipe (105) is communicated with the water inlet chamber (107).

4. Automatic milk heating device according to claim 3, characterized in that the end of said first communication channel (103) remote from said annular water chamber (102) communicates with said inlet chamber (107).

5. The automatic milk heating equipment according to claim 2, characterized in that a second communication channel (104) is arranged between the bottom end of the annular water cavity (102) and the heating water cavity (101), and a second electromagnetic valve is arranged on the second communication channel (104).

6. Automatic milk heating device according to claim 1, characterized in that said micro-pump (300) communicates with a bottom end inside said annular water chamber (102).

7. The automatic milk heating equipment according to claim 1, further comprising a pot shell (500), wherein the pot body (100) is arranged in the pot shell (500), the electric heating device (200) is provided with an electric heating sheet (201), and the electric heating sheet (201) is arranged at the bottom end in the pot shell (500) and clings to the bottom end of the pot body (100).

8. Automatic milk heating equipment according to claim 7, characterized in that the electric heating sheet (201) comprises a base material (202) and a heating element (203) arranged on the base material (202) in a double helix shape, wherein a first electrode (204) is connected to each end of the heating element (203), the heating element (203) is arranged between the two first electrodes (204), and a second electrode (205) is formed in the middle of the heating element (203).

9. The automatic milk heating equipment according to claim 8, wherein a display screen (501) and a controller (502) are arranged on the pot shell (500), a temperature sensor (108) is arranged in the heating water cavity (101), and the temperature sensor (108), the display screen (501), the electric heating sheet (201) and the micro water pump (300) are electrically connected with the controller (502).

10. Automatic milk heating equipment according to claim 1, characterized in that said pan (100) is made of microcrystalline glass.

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