JP2019118441A - Cooking device - Google Patents

Abstract

To restrain oxidation of oil without adding an antioxidant, etc.SOLUTION: A cooking device comprises a cooking chamber 10 formed inside a device body 1, and an oil storage tank 12 installed in the cooking chamber 10, cooks food in the cooking chamber 10 by heating oil stored in the oil storage tank 12, and comprises a superheated steam generation part 20 for generating superheated steam by heating supplied water, a superheated steam supply part 30 for supplying the superheated steam generated by the superheated steam generation part 20 to the cooking chamber 10, and a heat exchanger 42 for preliminarily heating the water to be supplied to the superheated steam generation part 20 by using heat of the superheated steam passed through the cooking chamber 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heating and cooking apparatus.

  Conventionally, various methods are known as a method of heating oil stored in an oil storage tank and injecting food such as potato and croquette into the heated oil for cooking.

  By the way, oil is oxidized with the passage of time in the air, particularly when it is accompanied by heating, and it is degraded and deteriorated. Therefore, when the food is heated and cooked several times with the heated oil, the oil is rapidly degraded and deteriorated, and the viscosity of the oil is increased, which causes the deterioration of color and odor. Along with this, there is a possibility that the cooked food is deteriorated in color, taste and the like, leading to deterioration in quality.

  Then, the method of adding an antioxidant etc. to the oil which heats a food, and cooking is proposed (for example, refer patent document 1).

JP, 2013-81477, A

  However, in the cooking method as described above, an antioxidant is added to the oil, and although a certain effect is exhibited from the viewpoint of oxidation prevention, the above-mentioned deterioration and deterioration are sufficiently suppressed in practice. It can not be said that. In addition, it is also a fact that resistance to the addition of antioxidants to food used for cooking is felt.

  An object of this invention is to provide the heating-cooking apparatus which can suppress the oxidation of oil, without adding antioxidant etc. in view of the said situation.

  In order to achieve the above object, the heating and cooking apparatus according to the present invention comprises a cooking chamber formed inside the apparatus body and an oil storage tank installed in the cooking chamber, and the oil stored in the oil storage tank In the heating and cooking apparatus for heating and cooking food in the cooking chamber by heating, the superheated steam generating means for heating the supplied water to generate superheated steam, and the superheated steam generated by the superheated steam generating means The superheated steam supply means for supplying to the cooking chamber, and the preheating means for preliminarily heating the water supplied to the superheated steam generation means by using the heat of the superheated steam which has passed through the cooking chamber It is characterized by

  Also, according to the present invention, in the heating and cooking apparatus, the preheating means utilizes the heat of the superheated steam discharged from the cooking chamber and passed through an oil filter for removing oil. Preheating the water supplied to the

  Further, the present invention is characterized in that, in the above-mentioned heating and cooking apparatus, the superheated steam generating means is provided with an induction heating means for heating the oil in the oil storage tank by induction heating and heating supplied water by induction heating. I assume.

  According to the present invention, the superheated steam generation means heats the supplied water to generate superheated steam, and the superheated steam supply means supplies the superheated steam generated by the superheated steam generation means to the cooking chamber. The oxygen concentration in the internal atmosphere of the chamber can be reduced, and food can be cooked under a low oxygen atmosphere without adding an antioxidant to the oil. Moreover, since the superheated steam is generated by heating water, there is no possibility of giving resistance to the user as compared with the addition of the antioxidant to the oil. Therefore, there is an effect that the oxidation of oil can be suppressed without adding an antioxidant and the like. In addition, since the preheating means preheats the water supplied to the superheated steam generating means using the heat of the superheated steam which has passed through the cooking chamber, the amount of heating in the superheated steam generating means can be reduced. Thus, the power consumption can be reduced.

FIG. 1 is a schematic view schematically showing a heating and cooking apparatus according to an embodiment of the present invention. FIG. 2 is a flowchart showing the processing content of the superheated steam supply control processing performed by the control unit shown in FIG.

  Hereinafter, with reference to an accompanying drawing, a suitable embodiment of a cooking-by-heating machine concerning the present invention is described in detail.

  FIG. 1 is a schematic view schematically showing a heating and cooking apparatus according to an embodiment of the present invention. The heating and cooking apparatus illustrated here is configured by including a cooking chamber 10, a superheated steam generating unit 20, a superheated steam supplying unit 30, and a superheated steam processing unit 40 inside the apparatus main body 1 which is a housing. ing.

  The cooking chamber 10 is a chamber having an opening (hereinafter also referred to as an upper surface opening) 11 on the upper surface, and an oil reservoir 12 is provided inside. The upper surface opening 11 of the cooking chamber 10 can be opened and closed by a lid 13. The oil storage tank 12 is made of a metal material such as stainless steel (for example, SUS 430), and has an inlet 15 which is an opening on the top surface. The oil reservoir 12 is mounted on a substantially central portion of the bottom wall of the cooking chamber 10 in such a manner that the side portion is separated from the side wall of the cooking chamber 10.

  The oil storage tank 12 stores edible oil and is provided with an oil temperature detection unit 16. The oil temperature detection unit 16 is a temperature detection unit that detects the temperature of the oil in the oil storage tank 12, and the detected temperature is sent to the control unit 50 as a temperature signal.

  Here, the control unit 50 integrally controls the operation of each part of the heating and cooking apparatus. The control unit 50 may be realized, for example, by causing a processing device such as a central processing unit (CPU) to execute a program, that is, realized by software, or realized by hardware such as an integrated circuit (IC). It may be realized using software and hardware together.

  The superheated steam generation unit 20 is configured to include a steam generation pipeline 21 and an induction heating coil 22. The water vapor generation pipeline 21 is configured by connecting a plurality of pipes made of a metal material such as stainless steel, for example, and is provided in a manner to communicate with the water supply pipeline 2. Here, the water supply pipeline 2 is for supplying, for example, tap water to the superheated steam generation unit 20.

  The induction heating coil 22 is installed between the cooking chamber 10 and the water vapor generation pipeline 21 so as to be separated from the cooking chamber 10 and the water vapor generation pipeline 21. The induction heating coil 22 is configured to be wound around its own central axis.

  The induction heating coil 22 is energized when a voltage of a specific frequency is applied by the inverter 23 electrically connected, and heats the oil storage tank 12 by induction heating, and the water vapor generation pipeline 21 Is an induction heating means for heating by induction heating.

  Thus, the oil stored in the oil reservoir 12 is heated. Further, the water passing through the steam generation pipeline 21 is heated, and changes its state in the order of hot water → water vapor → superheated water vapor to generate superheated water vapor. That is, the superheated steam generation unit 20 constitutes a superheated steam generation unit that heats the supplied water to generate superheated steam.

  The inverter 23 incorporates a so-called inverter circuit, and by driving according to a command given from the control unit 50, an alternating current given from a commercial power supply (not shown) is taken as an alternating current of a specific frequency and induction heating coil It is given to 22.

  The superheated steam supply unit 30 is configured to include a superheated steam supply pipeline 31 and a three-way valve 32. The superheated steam supply pipeline 31 is configured by connecting a plurality of pipes, and an inlet side end portion serving as one end communicates with the superheated steam generation pipeline 21. Further, the outlet side end which is the other end of the superheated steam supply pipeline 31 penetrates the bottom wall through hole (not shown) formed in the bottom wall of the cooking chamber 10 from below and is inside the cooking chamber 10 I am facing

  The three-way valve 32 is provided in the middle of the superheated steam supply line 31. The three-way valve 32 has one inlet 321 and two outlets 322 and 323. The inlet portion 321 is connected to a pipe connected to the superheated steam generation pipeline 21 while constituting the upstream side of the superheated steam supply pipeline 31. The first outlet 322 of the two outlets 322 and 323 is connected to a pipe extending to the cooking chamber 10 while forming the downstream side of the superheated steam supply pipeline 31, and the second outlet 323 is It is connected to the bypass line 33. One end of the bypass conduit 33 is connected to the second outlet portion 323, and the other end is connected in a manner such that the bypass conduit 33 joins in the middle of the superheated steam discharge conduit 60.

  Such a three-way valve 32 connects the inlet 321 and the first outlet 322, and sends the superheated steam generated by the superheated steam generator 20 to the cooking chamber 10. It is a valve which can be selectively switched between the second delivery state in which the superheated steam generated by the superheated steam generating unit 20 is communicated with the second outlet part 323 and sent out to the bypass line 33. The switching operation of the three-way valve 32 is performed according to the command given from the control unit 50.

  The superheated steam discharge pipe line 60 is configured by connecting a plurality of pipes, and a side wall through hole (not shown) in which the inlet side end which is one end is formed in the upper side wall of the cooking chamber 10 Through the inside of the cooking chamber 10). The side wall through holes pass along the inlet 15 of the oil reservoir 12 after the superheated steam discharged from the outlet side end of the superheated steam supply pipe 31 passes upward inside the cooking chamber 10. It is formed in the place where it can do. Further, an outlet side end portion, which is the other end of the superheated steam discharge pipeline 60, is connected to the superheated steam processing unit 40.

  Such a superheated steam discharge pipe 60 is for circulating the superheated steam which has passed through the cooking chamber 10 to the superheated steam processing unit 40, and is reversely connected upstream of the connection point with the bypass pipe 33. A valve 61 is provided.

  The superheated steam processing unit 40 is configured to include an oil filter 41 and a heat exchanger 42. The oil filter 41 is for removing the oil contained in the superheated steam discharged from the cooking chamber 10 and flowing through the superheated steam discharge pipe 60.

  The heat exchanger 42 constitutes a part of the water supply pipeline 2 and has a channel 421 through which the tap water passes, and the tap water passing through the channel 421 and the superheat passing through the oil filter 41 It exchanges heat with water vapor. That is, the heat exchanger 42 constitutes a preheating means for preliminarily heating the tap water (water) supplied to the superheated steam generation unit 20 using the heat of the superheated steam which has passed through the oil filter 41. .

  And the heat exchanger 42 condenses the superheated steam which heated the tap water, and discharges it to the exterior of the apparatus main body 1 as water. That is, the superheated steam processing unit 40 condenses the superheated steam that has passed through the cooking chamber 10 and discharges it to the outside of the apparatus main body 1.

  In the heating and cooking apparatus having the above-described configuration, control unit 50 gives a drive command to inverter 23 to cause induction heating coil 22 to be in an energized state, thereby guiding oil reservoir 12 and water vapor generation pipeline 21. It is made to heat, and the following superheated steam supply control processing is implemented.

  FIG. 2 is a flowchart showing the processing content of the superheated steam supply control processing performed by the control unit 50 shown in FIG.

  In the superheated steam supply control process, the control unit 50 waits for input of a temperature signal from the oil temperature detection unit 16 (step S101). If the oil temperature detection unit 16 detects the temperature of the oil and the detected temperature is given as a temperature signal and a temperature signal is input (step S101: Yes), the control unit 50 receives an internal memory (not shown). A reference temperature (for example, 120 to 135 ° C.) which is a threshold value is read out, and it is determined whether the detected temperature included in the temperature signal is equal to or higher than the reference temperature (step S102).

  If the detected temperature is less than the reference temperature (step S102: No), the control unit 50 sends the second delivery command to the three-way valve 32 to make the three-way valve 32 in the second delivery state (step S103). The procedure is returned to and this process ends.

  According to this, the supply of the superheated steam generated by the superheated steam generation unit 20 to the cooking chamber 10 can be restricted.

  The superheated steam reaches the superheated steam processing unit 40 after passing through the bypass line 33. The superheated steam reaching the superheated steam processing unit 40 passes through the oil filter 41 and then passes around the heat exchanger 42. Thus, the heat exchanger 42 exchanges heat between the superheated steam passing the surroundings and the tap water passing through the flow path 421, and the tap water supplied to the superheated steam generating unit 20 using the heat of the superheated steam. It can be preheated. In the superheated steam processing unit 40, water condensed by passing around the heat exchanger 42 is discharged to the outside of the apparatus main body 1.

  On the other hand, when the detected temperature is equal to or higher than the reference temperature (step S102: Yes), the control unit 50 sends the first delivery command to the three-way valve 32 to make the three-way valve 32 in the first delivery state (step S104). After that, return the procedure and end this process.

  According to this, the superheated steam generated by the superheated steam generation unit 20 can be supplied to the cooking chamber 10. The superheated steam supplied to the cooking chamber 10 is discharged from the outlet side end portion of the superheated steam supply pipe 31 to pass through the inside of the cooking chamber 10 upward and then to the inlet 15 of the oil storage tank 12. Pass along. Thus, the superheated steam that has passed through the cooking chamber 10 enters the superheated steam discharge pipe 60 from the inlet side end of the superheated steam discharge pipe 60 passing through the side wall through hole, and this superheated steam discharge pipe 60 And reach the superheated steam processing unit 40. The superheated steam reaching the superheated steam processing unit 40 passes through the oil filter 41 and then passes around the heat exchanger 42. Thus, the heat exchanger 42 exchanges heat between the superheated steam passing the surroundings and the tap water passing through the flow path 421, and the tap water supplied to the superheated steam generating unit 20 using the heat of the superheated steam. It can be preheated. In the superheated steam processing unit 40, water condensed by passing around the heat exchanger 42 is discharged to the outside of the apparatus main body 1.

  In a state where the superheated steam generated by the superheated steam generation unit 20 is supplied to the cooking chamber 10 in this manner, the lid 13 is removed to open the upper surface opening 11 of the cooking chamber 10, and the upper surface opening 11 and the inlet 15 The food is introduced into the oil of the oil reservoir 12 through which the cooking is performed.

  As described above, according to the heating and cooking apparatus according to the embodiment of the present invention, the tap water supplied by the superheated steam generation unit 20 is heated to generate superheated steam, and the superheated steam supply unit 30 generates superheated steam. Since the superheated steam generated by the generation unit 20 is supplied to the cooking chamber 10, the oxygen concentration in the internal atmosphere of the cooking chamber 10 can be reduced, and a low oxygen atmosphere can be obtained without adding an antioxidant or the like to the oil. Under the food can be cooked. Moreover, since the superheated steam is generated by heating the tap water, there is no possibility of giving resistance to the user as compared with the addition of the antioxidant to the oil. Therefore, the oxidation of oil can be suppressed without adding an antioxidant or the like.

  According to the above-described heating and cooking apparatus, the heat exchanger 42 constituting the superheated steam processing unit 40 preliminarily supplies the tap water supplied to the superheated steam generating unit 20 using the heat of the superheated steam which has passed through the oil filter 41. Since the heating is performed, the input electric power in the superheated steam generating unit 20 can be reduced, whereby the power consumption can be reduced.

  According to the above-described heating and cooking apparatus, the superheated steam generated by the superheated steam generating unit 20 when the temperature detected by the oil temperature detecting unit 16 by the control unit 50 is equal to or higher than a predetermined reference temperature (threshold) Is supplied to the cooking chamber 10, but if the temperature detected by the oil temperature detection unit 16 is less than the reference temperature, the supply of the superheated steam generated by the superheated steam generation unit 20 to the cooking chamber 10 is restricted. Therefore, it is possible to prevent the superheated steam from being supplied to the cooking chamber 10 in a state where the oil temperature is not sufficiently warmed. As a result, the superheated steam supplied to the cooking chamber 10 is condensed due to the temperature of the oil and charged into the oil storage tank 12, whereby the occurrence of the hydrolysis reaction of the oil can be prevented, and the deterioration of the oil is suppressed. can do.

  Moreover, according to the heating-cooking apparatus which is this Embodiment, there exist the following effects.

  Also in the case of restricting the supply of the superheated steam generated in the superheated steam generation unit 20 to the cooking chamber 10, the superheated steam passes through the bypass pipeline 33 and reaches the superheated steam processing unit 40, so that in the heat exchanger 42. The heat of the superheated steam can be used to preliminarily heat the tap water supplied to the superheated steam generation unit 20, which can also reduce the input power at the superheated steam generation unit 20, thereby Power consumption can be reduced.

  By passing the superheated steam supplied to the cooking chamber 10 along the inlet 15 of the oil storage tank 12, the upper part of the oil of the oil storage tank 12 can be heated, whereby the lower part is mainly caused by the induction heating coil 22. The width of the temperature distribution of the oil to be heated can be reduced, and as a result, the oil can be heated substantially uniformly.

  By passing the superheated steam supplied to the cooking chamber 10 along the inlet 15 of the oil storage tank 12 as described above, the oil mist scattered when cooking food is delivered to the superheated steam processing unit 40 together with the superheated steam. By removing the oil with the oil filter 41, the oil can be favorably suppressed from being discharged to the outside of the apparatus main body 1.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made.

  In the embodiment described above, the heat exchanger 42 for heat exchange between the superheated steam reaching the superheated steam processing unit 40 and the tap water supplied to the superheated steam generation unit 20 has been described as an example of the preheating means. In the present invention, the form is not particularly limited as long as the water supplied to the superheated steam generating means can be preliminarily heated using the heat of the superheated steam which has passed through the cooking chamber.

  In the embodiment described above, when the temperature detected by the oil temperature detection unit 16 is less than the reference temperature, the superheated steam is supplied to the superheated steam processing unit 40 via the bypass pipe line 33, Although the supply of the superheated steam to the cooking chamber 10 is regulated, in the present invention, the supply destination of the superheated steam is not limited as long as the supply to the cooking chamber can be regulated.

DESCRIPTION OF SYMBOLS 1 apparatus main body 10 cooking chamber 11 upper surface opening 12 oil storage tank 13 lid 15 inlet 16 oil temperature detection part 20 superheated steam generation part 21 steam generation pipeline 22 induction heating coil 23 inverter 30 superheated steam supply part 31 superheated steam supply pipeline 32 three-way valve 33 bypass pipeline 40 superheated steam processing unit 41 oil filter 42 heat exchanger 50 control unit 60 superheated steam discharge pipeline 61 check valve

Claims (3)

A cooking chamber formed inside the device body,
An oil reservoir installed in the cooking chamber,
In the heating and cooking apparatus, the food is cooked in the cooking chamber by heating the oil stored in the oil reservoir.
Superheated steam generation means for heating supplied water to generate superheated steam;
Superheated steam supply means for supplying the superheated steam generated by the superheated steam generation means to the cooking chamber;
And a preheating unit configured to preheat water supplied to the superheated steam generation unit using heat of the superheated steam that has passed through the cooking chamber.   The preheating means preliminarily heats the water supplied to the superheated steam generation means using the heat of the superheated steam discharged from the cooking chamber and passed through an oil filter for removing oil. The heating and cooking apparatus according to claim 1, characterized in that:   The superheated steam generation means comprises an induction heating means for heating the oil in the oil storage tank by induction heating and heating the supplied water by induction heating. Cooking device.

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