JPH0810160A - Food steamer - Google Patents

Abstract

PURPOSE:To provide a food steamer which enables the heating of food by a low temperature steam of optional quality without causing hunting. CONSTITUTION:Steam generated in a steam generator 1 is introduced to an ejector 8 where air is sucked and a mixture of the steam and the air is sent into a food heating storage 4. The control of the temperature in the storage is performed by controlling a steam control valve 2 and an air damper 6 based on the internal storage temperature detected with a temperature sensor 5.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is applied to a food steamer for heating food with steam heat.

[0002]

2. Description of the Related Art A conventional food steamer includes a steam generator 20, a steam control valve 21, a steam pipe 22, and a steam pipe 22, as shown in FIG.
It consists of a food heating cabinet 23 and a temperature sensor 24.
The steam at the temperature of about 100 ° C generated by the steam generator 20 is used as the steam pipe 2
The temperature inside the food heating cabinet 23 is controlled via the steam control valve 21 by the amount of steam to be fed into the food heating cabinet 23. And this steam control valve 2
The control of the amount of steam by 1 is an ON / OFF control method.

[0003]

Therefore, the conventional food steamer has the following drawbacks.

A. Since steam of about 100 ° C. is intermittently sent into the food heating cabinet 23, hunting occurs when the temperature inside the cabinet is at the time of steam delivery and at the time of stopping. This tendency is particularly remarkable when the load is small (the food in the refrigerator is small).

B. Since it is not possible to freely control the ratio of the amount of steam and the amount of air in the refrigerator, all foods are heated under the same conditions even when the type of food is different.

An object of the present invention is to solve the above disadvantages a and b in a food steamer.

[0007]

The constitution of a food steamer according to the present invention is as follows. In a food steamer consisting of a food heating cabinet and a steam generator that generates steam for feeding into the food heating cabinet, a mixture introducing pipe is attached to the food heating cabinet, and an air damper is attached to the mixture introducing pipe. An air introduction duct is attached, a steam pipe with a steam control valve for guiding the steam generated by the steam generator to the throat portion of the ejector formed at the inlet of the steam introduction pipe is provided, and the food heating cabinet is provided. A controller that feedback-controls the opening degrees of the steam control valve and the air damper based on the internal temperature detected by a temperature sensor installed in the food heating cabinet so that the internal temperature becomes a set temperature. A food steamer characterized by being provided.

[0008]

The steam generated by the steam generator is jetted from the throat portion of the ejector into the air-fuel mixture introducing pipe via the steam pipe, and the jetting energy sucks air from the air introducing duct. The steam and air are well mixed in the air-fuel mixture introducing pipe, and this is sent into the food heating cabinet.

The temperature inside the food heating cabinet is detected by a temperature sensor, and the controller sets a preset value by a steam control valve and an air damper based on the temperature inside the cabinet detected by the temperature detection sensor. Feedback control of the mixing ratio of steam and air is performed. In addition to controlling by the mixture ratio of steam and air (large air amount = low temperature / small air amount = high temperature), both amounts are controlled simultaneously while keeping the mixture ratio of steam and air constant It is also possible to control Control of this mixing ratio and amount is based on the type of food,
It can be set in advance depending on heating conditions.

[0010]

Embodiment An embodiment of the present invention will be described in detail below with reference to FIG.

Reference numeral 1 denotes a steam generator for heating water supplied via a water supply line 1a to generate steam. The steam generated by the steam generator 1 is a steam pipe equipped with a steam control valve 2. 3 is guided to the throat portion 8a of the ejector 8 and jetted there, and the jetting energy sucks air from the air introduction duct 7 with the air damper 6, and heats the food through the mixture introduction pipe 9. It is sent into the warehouse 4.

Reference numeral 10 is a controller, and the controller 10
Is based on the inside temperature detected by the temperature sensor 5 installed in the food heating chamber 4, while controlling the opening degree of the control valve 2 and the air damper 6 and the ratio thereof, to a preset inside temperature. To control the amount of steam and the amount of air.

[0013]

As described above, according to the present invention, the steam is mixed with the air and sent into the food heating chamber. Therefore, the following effects can be obtained.

A. Since the temperature in the refrigerator is determined by the amount of air mixed with the steam, hunting does not occur unlike in the conventional case where steam of about 100 ° C. is sent by the ON / OFF method.

B. Since the temperature inside the refrigerator can be determined by the amount of steam and the amount of air and this ratio, it is easy to control the temperature, especially in a small capacity food heating cabinet, and the variation in temperature is small, which affects the food. Little heat effect.

C. Change the mixing ratio of the amount of steam and the amount of air,
The quality of steam, that is, low-temperature steam (steam) having a high degree of freedom can be sent into the refrigerator. Therefore, food quality control can be appropriately performed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a food steamer according to the present invention.

FIG. 2 is an explanatory diagram of a conventional food steamer.

[Explanation of symbols]

 1 Steam Generator 1a Water Supply Line 2 Control Valve 3 Steam Pipe 4 Food Heater 5 Temperature Sensor 6 Air Damper 7 Air Inlet Duct 8 Ejector 8a Throat 9 Mixture Inlet Pipe 10 Controller

Claims (1)

[Claims] 1. A food steamer comprising a food heating cabinet and a steam generator for generating steam to be fed into the food heating cabinet, wherein a mixture introducing pipe is attached to the food heating cabinet and the mixture is introduced. An air introduction duct with an air damper is attached to the pipe, and a steam control valve-equipped steam pipe for guiding the steam generated by the steam generator to the throat portion of the ejector formed at the inlet of the steam introduction pipe is provided. , So that the temperature in the food heating cabinet reaches a set temperature, based on the internal temperature detected by a temperature sensor installed in the food heating cabinet, the opening of the steam control valve and the air damper A food steamer characterized by having a controller for feedback control.