CN219613685U - Handpiece assembly and cooking utensil - Google Patents

Abstract

The utility model provides a head assembly and cooking utensil, the head assembly includes the headstock body and water injection mechanism, water injection mechanism connects in the headstock body, water injection mechanism includes the water tank, evaporimeter and gasbag, the water tank communicates and can supply water to the evaporimeter with the evaporimeter, gasbag and water tank intercommunication, when the temperature of gasbag is greater than predetermined temperature, the gas in the gasbag can get into the water tank, water injection mechanism can temperature variation supplies water to the culinary art intracavity, so as to can form into steam in the culinary art intracavity, thereby avoid eating material desiccation too much and become firewood, improved the culinary art taste of eating material.

Description

Handpiece assembly and cooking utensil

Technical Field

The disclosure belongs to the field of cooking appliances, and particularly relates to a machine head assembly and a cooking appliance.

Background

With the increasing level of living, cooking appliances for making food are also of a variety, gradually moving into a wide range of households, such as air fryers, and the effect in modern kitchens is not insignificant.

Air fryers have been used to cook food by heating the air and using a centrifugal fan to deliver heated air into contact with the food.

The air fryer can be used for cooking meat, and in general, the water loss of the meat is serious in the cooking process, so that cooked meat after cooking is relatively dry and has relatively poor edible mouthfeel.

Disclosure of Invention

The main object of the present disclosure is to provide a head assembly and a cooking appliance to improve the cooking taste of food materials.

For the above purpose, the present disclosure at least provides the following technical solutions:

in one aspect of the disclosure, a nose assembly is provided, the nose assembly includes a nose seat body and a water injection mechanism, the water injection mechanism is connected to the nose seat body, the water injection mechanism includes a water tank, an evaporator, and an air bag, the water tank is communicated with the evaporator and is capable of supplying water to the evaporator, the air bag is communicated with the water tank, and when the temperature of the air bag is greater than a predetermined temperature, gas in the air bag is capable of entering the water tank.

The water injection mechanism provided by the disclosure can supply water to the cooking cavity through temperature change so as to form water vapor in the cooking cavity, thereby avoiding excessive water loss of food materials and firewood change and improving the cooking taste of the food materials.

According to the air bag, the air bag is arranged below the water tank in the height direction of the machine head assembly, the air bag is communicated with the water tank through the air inlet pipe, the one-way valve is arranged at the upper end of the air inlet pipe, so that gas in the air bag can enter the water tank, and under the condition, water in the water tank cannot flow into the air bag, so that the use reliability of the water injection mechanism is further improved.

According to another exemplary embodiment of the disclosure, the upper end of the air inlet pipe is located above the water surface in the water tank, so that water in the water tank can be prevented from reversely flowing into the air bag in the process of temperature change in the cooking cavity, and therefore the use reliability of the water injection mechanism is improved, but the water injection mechanism is not limited to the water injection mechanism.

Optionally, the aircraft nose subassembly still includes guide fan and heating piece, guide fan rotatable connect in the headstock body, guide fan follows the direction of height of aircraft nose subassembly set up in the top of heating piece, the evaporimeter set up in the top of heating piece and be located guide fan's radial outside, so make the evaporimeter set up on hot-blast passageway, be convenient for hot-blast take away vapor together to the mobility of vapor has been improved.

Specifically, the air outlet of the evaporator is arranged below the top edge of the guide fan along the height direction of the machine head assembly.

Further, the air bag is arranged below the evaporator in the height direction of the head assembly, and the air bag is arranged on the outer side of the heating piece in the radial direction of the head assembly. The evaporator is arranged in the cooking cavity, such as but not limited to, the evaporator is arranged above the heating piece along the height direction of the machine head assembly, so that the environment temperature of the evaporator is higher, and the evaporation of moisture in the evaporator is facilitated. Further, the space utilization of the handpiece assembly is improved by such arrangement.

According to the water tank, the evaporator is communicated with the water tank through the water outlet pipe, the inner diameter of the water outlet pipe is not larger than 15mm, when the inner diameter of the water outlet pipe is larger than 15mm, the water surface tension of the water outlet pipe cannot be maintained, external air is led to enter the water outlet pipe, and the use reliability of the water injection mechanism is affected under the condition that one side of the water outlet pipe or one section of water inlet pipe is provided with one section of water outlet.

Further, the evaporator is communicated with the water tank through the water outlet pipe, and the water outlet pipe is in sealing connection with the water tank, so that the sealing performance of the water tank is improved, and the sealing performance of the water injection mechanism is also improved.

Optionally, the air bag is annular or arc-shaped along the circumferential direction of the head assembly, and is in sealing connection with the air inlet pipe, and/or the air inlet pipe is in sealing connection with the water tank. Thus, the sealing performance of the water injection mechanism is improved.

Specifically, the air bag is a metal part. The metal part has excellent heat conductivity, so that the temperature outside the air bag can be timely transferred to the gas in the air bag.

Further, the water tank is detachably connected to the headstock body, so that the water tank can be conveniently detached and washed, and the sanitation condition of the water injection mechanism is improved.

Optionally, the water tank has the water filling mouth and can seal the lid that closes the water filling mouth, the water filling mouth is located the top of water tank, so the water tank is the sealing state roughly, avoids the unexpected leakage of water in the water tank to the safety in utilization of water injection mechanism has been improved.

In another aspect of the present disclosure, a cooking appliance is provided that includes a pan body assembly having a cooking cavity and a head assembly as described above, the water injection mechanism being capable of supplying water to the cooking cavity.

Drawings

The foregoing and/or other objects and advantages of the disclosure will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a longitudinal sectional view of a cooking appliance provided in an exemplary embodiment of the present disclosure.

Fig. 2 is a thermal airflow diagram within a cooking cavity of the cooking appliance of fig. 1.

Fig. 3 is a schematic view of the water injection mechanism of fig. 1.

Fig. 4 is a diagram of the airbag architecture of fig. 1.

Reference numerals illustrate:

1. a handpiece assembly; 2. A pan body assembly;

11. a headstock body; 12. A water injection mechanism;

13. an air supply mechanism; 21. An outer pot;

22. an inner pot; 121. A water tank;

122. an air bag; 123. A water outlet pipe;

124. an evaporator; 125. A connector;

126. a one-way valve; 128. An air inlet pipe;

131. a fan; 132. A heating member;

133. a driving motor; 134. A heat radiation fan;

135. an output shaft; 1221. An airbag body;

1222. and a vent hole.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the embodiments of the present disclosure should not be construed as limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

In the related art, the air fryer heats food materials with hot air, such as, but not limited to, a guide fan 131 rotates to blow hot air generated from a heating member 132 into a cooking cavity to heat the food materials.

An exemplary embodiment of the present disclosure provides a cooking appliance including a head assembly 1 and a pot assembly 2, wherein the pot assembly 2 has a cooking cavity for accommodating food materials, and the head assembly 1 is disposed above the pot assembly 2 to be capable of being covered on the pot assembly 2. In the cooking process of the food, the machine head assembly 1 can be covered above the pot body assembly 2, so that the cooking cavity is in a heat preservation state, and the heat utilization rate is improved.

As an example, the present embodiment is described taking a cooking appliance as an air fryer, but not limited thereto.

Alternatively, referring to fig. 1 and 2, the air fryer may be a drawer-type air fryer, but not limited thereto, and the air fryer may be a flip-type air fryer (not shown), in which case the head assembly 1 may be pivotally connected to one side of the pot assembly 2, but not limited thereto.

For convenience of description, the present disclosure is illustrated by way of example, but not limitation, with a drawer-type air fryer.

Specifically, the pot body assembly 2 includes an outer pot 21 and an inner pot 22, wherein the outer pot 21 has an inner cavity in which the inner pot 22 is disposed, the inner cavity of the inner pot 22 being formed as a cooking cavity in which food materials can be placed to be heated.

Optionally, the pot body assembly 2 may further include a frying basket (not shown) disposed in the cooking cavity for supporting food materials, for example, but not limited to, the frying basket is provided with an oil leakage hole, and grease generated during cooking of the food materials can drip under the frying basket through the oil leakage hole, so that the food materials are separated from the grease, and the cooking taste of the food materials is improved. Further, in order to increase the circulation speed of the hot air, the frying basket is provided with ventilation holes, which are convenient for the hot air to pass through, but not limited to.

With continued reference to fig. 1 and 2, the head assembly 1 includes a head mount 11 and an air supply mechanism 13, and the head mount 11 may be disposed above the cooking cavity. The air supply mechanism 13 may be connected to the headstock 11 to be able to blow hot air into the cooking cavity to heat the food material.

In order to avoid excessive water loss of food materials in the cooking cavity, the machine head assembly 1 further comprises a water injection mechanism 12, the water injection mechanism 12 is connected to the machine head seat 11, the water injection mechanism 12 comprises a water tank 121, an evaporator 124 and an air bag 122, the water tank 121 is communicated with the evaporator 124 and can supply water to the evaporator 124, the air bag 122 is communicated with the water tank 121, and when the temperature of the air bag 122 is higher than a preset temperature, gas in the air bag 122 can enter the water tank 121.

The present disclosure provides a handpiece assembly, when the temperature of gasbag 122 is greater than predetermined temperature, the gas in the gasbag 122 is expanded, get into and lead to the interior atmospheric pressure of gasbag 122 to rise for the interior atmospheric pressure of gasbag 122 is greater than the interior atmospheric pressure of water tank 121, the interior gaseous water of entering into water tank 121 and extrusion water tank 121 flows to evaporator 124 in the gasbag 122, the water injection mechanism 12 that this disclosure provided can the temperature variation supply water to the culinary art intracavity, in order can form into steam in the culinary art intracavity, thereby avoid the food material to lose excessive and become firewood, the culinary art taste of food material has been improved.

The present disclosure provides a handpiece assembly 1, because of the change of temperature, the gas pressure in the air bag 122 changes, and under the condition that the air pressure in the air bag 122 is greater than the pressure in the water tank 121, the water in the water tank 121 will be extruded, so that the water tank 121 is opened or closed through temperature control, that is, the outflow amount and outflow time of the water in the water tank 121 can be controlled through the temperature change, so that the inflow amount and inflow time in the cooking cavity can be controlled.

In order to improve the reliability of the air bag 122 and further improve the use reliability of the water injection mechanism 12, the internal volume of the air bag 122 is unchanged during the temperature change process, so that the air pressure in the air bag 122 can be adjusted through the temperature change of the air bag 122. By way of example, the bladder 122 is a metallic piece, but is not limited thereto. The metallic article has excellent thermal conductivity so that the temperature outside the bladder 122 can be timely transferred to the gas inside the bladder 122.

In order to further improve the reliability of the water injection mechanism 12, the air inlet pipe 128 is optionally connected with the air bag 122 in a sealing manner, so as to avoid air leakage at the connection position, but not limited thereto.

Referring to fig. 4, the balloon 122 in this embodiment is provided in a ring shape or an arc shape along the circumferential direction of the head assembly 1. For convenience of description, the present embodiment is described by taking the example that the air bag 122 takes the shape of an arc along the circumferential direction of the handpiece assembly 1, but is not limited thereto.

Referring to fig. 1 to 4, further, the head assembly 1 further includes an air supply mechanism 13, and the air supply mechanism 13 is used for blowing hot air into the cooking cavity, and an arrow in fig. 2 shows a flow direction of the hot air in the cooking cavity so as to cook the food. Specifically, the air supply mechanism 13 includes a fan 131 and a heating element 132, for example, but not limited to, the fan 131 and the heating element 132 are disposed below the heat shield, the heating element 132 is capable of heating air to form hot air, the fan 131 is capable of blowing the hot air to form hot air and blowing the hot air into the cooking cavity for cooking food.

Optionally, the fan 131 is disposed above the heating element 132 along the height direction of the cooking apparatus, but not limited thereto. In order to drive the fan 131 to operate, the air supply mechanism 13 further includes a driving motor 133, the driving motor 133 is connected to the headstock 11, and an output shaft of the driving motor 133 extends to the cooking cavity along the height direction of the cooking appliance, and the fan 131 is connected to the output shaft, but not limited thereto.

Further, in order to improve the operational reliability of the head assembly 1, to avoid the excessive temperature of the devices in the head assembly 1, the air supply mechanism 13 further includes a cooling fan 134, where the cooling fan 134 is used to drive the air flow in a cooling cavity (described below) to cool the components in the cooling cavity, so as to avoid the excessive temperature of the components.

As an example, the cooling fan 134 is disposed above the heat shield along the height direction of the cooking appliance, for example, but not limited to, the cooling fan 134 is connected to the output shaft of the driving motor 133, but not limited to, so that the cooling fan 134 and the guide fan 131 are driven by the same driving motor 133, to reduce the number of components of the head assembly 1, simplify the mechanism of the cooking appliance, and reduce the manufacturing cost of the cooking appliance.

In order to avoid the balloon 122 shielding the heater 132 and thereby avoiding reducing the heat and light radiation of the heater 132 to the food, the balloon 122 in this embodiment is located radially outwardly of the heater 132 from the handpiece assembly 1. The present disclosure facilitates evaporation of moisture within the evaporator 124 by disposing the evaporator 124 in a cooking chamber (described below), such as, but not limited to, the evaporator 124 above the heating element 132 in the height direction of the head assembly 1, such that the evaporator 124 is at a higher ambient temperature. Further, this arrangement also improves the space utilization of the handpiece assembly 1.

Optionally, the evaporator 124 is disposed radially outside the fan, so that the evaporator 124 is disposed on the hot air channel, so that hot air can conveniently take away water vapor together, and the fluidity of water vapor is improved.

Further, the air outlet of the evaporator 124 is disposed below the top edge of the guide fan 131 along the height direction of the head assembly 1, that is, the evaporator 124 is disposed on the hot air channel blown by the guide fan 131, and when the hot air passes through the air outlet of the evaporator 124, the steam in the evaporator 124 can be taken away, so as to accelerate the flow of the water vapor.

With continued reference to fig. 4, the balloon 122 in this embodiment is, by way of example, annular or arcuate in shape along the circumference of the handpiece assembly 1, and the balloon 122 has a closed receiving chamber to avoid leakage of gas within the balloon 122. The present embodiment is illustrated with the air bag 122 having an arc shape, and further, the air bag 122 has a substantially 4/5 circular ring shape, but not limited thereto. The airbag 122 includes an airbag body 1221, a vent hole 1222 is provided in the airbag body 1221, and a lower end of the intake pipe 128 is inserted into the vent hole 1222 so that the intake pipe 128 is hermetically connected to the airbag body 1221.

Referring to fig. 1, a water outlet of the water tank 121 is provided at a lower portion of the water tank 121 in a height direction of the head assembly 1, for example, but not limited to, a water outlet is provided at a bottom wall of the water tank 121. Optionally, the water filling port of the water tank 121 is disposed at the top of the water tank 121 along the height direction of the head assembly 1, so as to facilitate adding water into the water tank 121, but not limited thereto, the water filling port is disposed at the top wall of the water tank 121, wherein the top wall is located above the bottom wall along the height direction of the head assembly 1. Optionally, the water filling port of the water tank 121 is provided with a cover body capable of sealing the water filling port, and the water filling port is positioned at the top of the water tank 121.

In order to facilitate cleaning of the water tank 121, the water tank 121 is detachably connected to the headstock 11, but not limited thereto.

In this embodiment, the air bag 122 is disposed below the water tank 121 along the height direction of the head assembly 1, the air bag 122 is communicated with the water tank 121 through the air inlet pipe 128, and the check valve 126 is disposed at the upper end of the air inlet pipe 128, so that the air in the air bag 122 can enter the water tank 121, and in this case, the water in the water tank 121 cannot flow into the air bag 122, thereby further improving the reliability of the water injection mechanism 12.

Optionally, the upper end of the air inlet pipe 128 is located above the water surface in the water tank 121, so that the water in the water tank 121 can be prevented from reversely flowing into the air bag 122 during the temperature change process in the cooking cavity, and thus the use reliability of the water injection mechanism 12 is improved, but not limited to this.

In order to improve the connection reliability of the water filling mechanism 12, the water tank 121 and the air inlet pipe 128 are hermetically connected to each other, for example, but not limited to, a connector 125 is provided at the air inlet of the water tank 121, i.e., the upper ends of the water tank 121 and the air inlet pipe 128 are connected together through the connector 125.

Further, in order to avoid unexpected leakage of the water outlet of the water tank 121, the water tank 121 and the water outlet pipe 123 (described below) are connected in a sealed manner, a connector 125 is provided at the water outlet of the water tank 121, and the upper ends of the water tank 121 and the water outlet pipe 123 are connected together by the connector 125, but not limited thereto.

In this embodiment, the water filling port of the water tank 121 is sealed, so that water does not leave the water tank 121 from the water outlet pipe 123 in the initial stage, i.e. leakage of the water tank 121 in the initial stage is avoided, and water in the water tank 121 is pressed into the evaporator 124 in the heating stage to replenish water for food.

As an example, the evaporator 124 and the water tank 121 are communicated through the water outlet pipe 123, and the inner diameter of the water outlet pipe 123 is not more than 15mm. When the inner diameter of the water outlet pipe 123 is greater than 15mm, the water surface tension of the water outlet pipe 123 cannot be maintained, so that external air enters the water outlet pipe 123, and the use reliability of the water injection mechanism 12 is affected due to the fact that one side of the water outlet pipe 123 or one section of air inlet and one section of water outlet are provided.

Further, in order to improve the operation reliability of the head assembly 1 and avoid the excessive temperature of devices in the head assembly 1, the head assembly 1 further comprises a heat shield, the head seat 11 can be connected above the pot body assembly 2, the heat shield is connected to the head seat 11, and the heat shield can divide the air fryer into a heat dissipation cavity and a cooking cavity.

As an example, in this embodiment, a heat dissipation cavity may be disposed in an upper space of the heat shield along the height direction of the cooking appliance, and the cooking cavity is disposed in a lower space of the heat shield along the height direction of the cooking appliance, but not limited thereto.

At an initial stage of the use of the air fryer, a predetermined amount of water is added to the water tank 121, and the air fryer is in the state shown in fig. 1, in which the water outlet pipe 123 is connected to the outside atmosphere, and the water in the water tank 121 is not discharged by the outside atmosphere.

After the air supply mechanism 13 is started, the heating element 132 starts to heat, the temperature in the cooking cavity starts to rise, along with the rise of the temperature, the gas in the air bag 122 starts to expand, as known by an ideal gas state equation pv=nrt, wherein P is the gas pressure in the air bag 122, V is the volume of the gas in the air bag 122, T is the gas temperature in the air bag 122, n is the amount of the gas, R is a molar gas constant, under the condition that the volume of the air bag 122 is unchanged, along with the rise of the gas temperature T in the air bag 122, the gas pressure P in the air bag 122 temporarily increases, at this time, the gas pressure P in the air bag 122 is greater than the atmospheric pressure, the gas in the air bag 122 enters the water tank 121, so that the gas pressure P in the air bag 122 is balanced with the atmospheric pressure again, and at this time, the volume V of the gas in the air bag 122 increases.

As described above, the water flowing out through the water outlet pipe 123 falls onto the evaporator 124, is evaporated to become water vapor by high temperature in the cooking cavity, and flows toward the food along with the hot air in the cooking cavity to replenish water to the food.

When the temperature of the cooking chamber is reduced to be less than a predetermined temperature, the volume of the gas in the air chamber 122 is reduced, and the gas at the top of the water tank 121 is pressed into the air chamber 122 by the external atmospheric pressure, so that the water in the water tank 121 does not flow out through the water outlet pipe 123.

In order to realize repeated stage-type water supply in the cooking process and avoid excessive water supplement, the water supply can be realized by a mode of changing a temperature difference. As an example, the first predetermined temperature T1 in the first stage cooking chamber is greater than the normal temperature, and the water in the water tank 121 is pressed to the evaporator 124. The second predetermined temperature T2 in the second stage cooking chamber is less than the first predetermined temperature T1, and the water in the water tank 121 in the second stage is not discharged through the water outlet pipe 123 by the atmospheric pressure. Then, the temperature in the cooking cavity is controlled to reach the first predetermined temperature T1, and the water in the water tank 121 is again pressed to the evaporator 124, so that the repeated stage-wise water supply of the cooking cavity is repeatedly realized.

In the description of the present disclosure, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, and communicatively connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

The described features, mechanisms, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known mechanisms, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (10)

1. A handpiece assembly, characterized in that the handpiece assembly (1) comprises:

a headstock body (11),

the water injection mechanism (12) is connected to the headstock body (11), the water injection mechanism (12) comprises a water tank (121), an evaporator (124) and an air bag (122), the water tank (121) is communicated with the evaporator (124) and can supply water to the evaporator (124), the air bag (122) is communicated with the water tank (121), and when the temperature of the air bag (122) is higher than a preset temperature, gas in the air bag (122) can enter the water tank (121).

2. The head assembly according to claim 1, wherein the air bag (122) is arranged below the water tank (121) along the height direction of the head assembly (1), the air bag (122) and the water tank (121) are communicated through an air inlet pipe (128), a one-way valve (126) is arranged at the upper end of the air inlet pipe (128) so that gas in the air bag (122) can enter the water tank (121), and/or the upper end of the air inlet pipe (128) is positioned above the water surface in the water tank (121).

3. The head assembly according to claim 1, wherein the head assembly (1) further comprises a fan (131) and a heating element (132), the fan (131) is rotatably connected to the head base (11), the fan (131) is disposed above the heating element (132) along the height direction of the head assembly (1), and the evaporator (124) is disposed above the heating element (132) and radially outside the fan (131).

4. A head assembly according to claim 3, wherein the air outlet of the evaporator (124) is provided below the top end edge of the guide fan (131) in the height direction of the head assembly (1).

5. A handpiece assembly as claimed in claim 3, characterized in that the balloon (122) is provided below the evaporator (124) in the height direction of the handpiece assembly (1), and the balloon (122) is located outside the heating member (132) in the radial direction of the handpiece assembly (1).

6. The head assembly according to claim 1, wherein the evaporator (124) and the water tank (121) are communicated through a water outlet pipe (123), and the inner diameter of the water outlet pipe (123) is not more than 15mm; or alternatively, the first and second heat exchangers may be,

the evaporator (124) is communicated with the water tank (121) through a water outlet pipe (123), and the water outlet pipe (123) is in sealing connection with the water tank (121).

7. The head assembly according to claim 2, wherein the air bag (122) is annular or arc-shaped along the circumferential direction of the head assembly (1), and the air bag (122) is in sealing connection with the air inlet pipe (128), and/or the air inlet pipe (128) is in sealing connection with the water tank (121).

8. The handpiece assembly of claim 1, wherein the balloon (122) is a metallic piece.

9. The head assembly according to claim 1, wherein the water tank (121) is detachably connected to the head mount (11); or alternatively, the first and second heat exchangers may be,

the water tank (121) is provided with a water filling port and a cover body capable of sealing the water filling port, and the water filling port is positioned at the top of the water tank (121).

10. A cooking appliance, characterized in that it comprises a pot assembly (2) and a head assembly (1) according to any one of claims 1-9, said pot assembly (2) having a cooking cavity, said water injection mechanism (12) being able to supply water to said cooking cavity.