JPH03152329A - Kitchen device - Google Patents

Abstract

PURPOSE:To improve an air conditioning efficiency within a kitchen, reduce a surrounding air load and improve a working function and its efficiency by a method wherein a surrounding air supplying part of a separate system from an indoor air conditioner system having a kitchen device arranged is installed near a combustion segment. CONSTITUTION:A linear opening 11 acting as a surrounding air supplying part is formed around an upper surface of a gas range 10. A joint 13 connected to a surrounding air supplying duct mounted in advance in a floor surface of a kitchen, for example, is arranged at a lower surface of the gas range 10. In addition, a duct 14 for use in guiding the surrounding air fed from the joint 13 is arranged within the gas range. Accordingly, it is possible to supply the surrounding air from the surrounding air supplying part 11 to the combustion part in cooperation with an operation of the combustion part. With such an arrangement, it is possible to improve an air conditioning efficiency within the kitchen and reduce the surrounding air load and to provide a kitchen device having a better working function and a better efficient characteristic.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a kitchen appliance that has been improved so that air required for combustion can be introduced directly from the outside into a combustion section.

[Prior Art] Gas ranges, ovens, and the like are becoming larger in kitchens where large quantities of food need to be prepared, such as in restaurants, hotels, and inns. Additionally, when installing air conditioning equipment for the entire building, an air conditioner that can air condition the entire kitchen is often installed to allow for comfortable work in the kitchen.

FIG. 4 shows an example of a conventionally used general kitchen appliance and air conditioning system in the kitchen. That is, a gas range 2 equipped with a plurality of burners 1 is installed in the center or wall of the kitchen, and a range hood 3 is installed above the range to exhaust combustion exhaust gas and smoke or smell generated by cooking to the outside. It is arranged. On the other hand, a plurality of air outlets 5 are arranged in the ceiling 4 of the kitchen for supplying conditioned air adjusted to an optimum temperature by an air conditioner (not shown) into the kitchen. In some cases, an air conditioner is installed on the wall of the kitchen, and conditioned air is supplied from the air conditioner.

[Problem to be solved by the invention] However, in the conventional kitchen appliances as described above,
There were issues to be solved as described below.

In other words, the air used for combustion in the gas range 2 is the air in the kitchen, and when all the burners installed in the gas range are lit and cooking is performed, the amount of fresh air in the kitchen decreases. Therefore, if ventilation is not appropriate, there will be a lack of oxygen, which is not a favorable condition for the cook. Furthermore, since the heat generated from kitchen appliances is extremely large, even if the entire kitchen is maintained at an optimum temperature using conditioned air from an air conditioner as described above, the cooling efficiency in particular will be greatly reduced. As a result, air conditioning equipment is required that is extremely large relative to the floor area of the kitchen, and efficient air conditioning cannot be achieved by securing installation space or increasing the driving force by increasing the size of the air conditioning equipment. In addition, it has been difficult to achieve effective air conditioning of the entire kitchen, forcing the use of a spot cooling system that targets only the cooks.

The present invention was proposed in order to eliminate the above-mentioned drawbacks, and its purpose is to provide a highly functional and efficient kitchen appliance that increases the efficiency of air conditioning in the kitchen and reduces the load on outside air. There is a particular thing.

[Means for Solving the Problems] The kitchen appliance according to claim 1 is characterized in that an outside air supply section is provided in the vicinity of the combustion section of the kitchen appliance, which is separate from the air conditioning system in the room in which the kitchen appliance is installed. It is something to do.

Further, the kitchen appliance according to claim 2 is characterized in that the outside air supply section comprises:
The present invention is characterized in that the outside air is supplied in conjunction with the operation of the combustion section.

Furthermore, the kitchen appliance according to claim 3 is characterized in that an air curtain is formed around the combustion section by the outside air supplied from the outside air supply section.

[Operations] According to the kitchen appliance of the present invention, the outside air required for combustion does not become an indoor air conditioning load, so the air conditioning load in the kitchen can be significantly reduced, and the combustion section is always supplied with fresh outside air from the outside. Therefore, the air in the kitchen does not become deficient in oxygen, and by forming an air curtain around the combustion section, it is possible to prevent heat generated by combustion from being transmitted into the kitchen.

[Example] Hereinafter, an example of the present invention will be specifically described based on FIGS. 1 to 3. Incidentally, the same members as those of the conventional type shown in FIG. 4 are given the same reference numerals, and the description thereof will be omitted.

In this embodiment, as shown in FIG. 1(A), a linear opening 11 is formed around the corner of the gas range 10 as an outside air supply section. Further, as shown in FIG. 1(B) and FIG. 2, a connecting portion 13 is provided on the bottom surface of the gas range 1O to be connected to an outside air supply duct 12 installed in advance on the floor of the kitchen, for example. It is being Furthermore, a duct 14 is provided in the gas range to guide the outside air introduced from the connecting part 13 to the opening 11. Note that if air needs to be supplied to the oven range, The air is supplied from an air supply port punched into a branch duct from the duct 14 inside the appliance.Also, as shown in FIG. 15 is provided, and is configured to open and close in conjunction with the ignition switch when igniting the gas range IC+, so that outside air can be supplied to the burner 1, which is the combustion section, as appropriate.

Furthermore, a removable tray 16 as shown in FIG. 3 is disposed inside the opening 11 to prevent moisture, oil, etc. from entering the range from the upper part of the gas range. There is. This tray 16 has a flange portion 16a that engages with a locking portion 17 formed on the duct 14, and is configured in a net shape so as not to obstruct the flow of outside air. It is constructed so that it can store water, etc. Furthermore, a cover 20 is attached to the upper surface of the opening 11, in which a plurality of slits or holes are formed as ventilation holes. Furthermore, a trap 18 is provided within the duct 14 to prevent dirt and dust contained in the outside air from blowing out into the kitchen from the opening 11 of the range.

Note that an air supply fan (not shown) is installed in the outside air supply duct 12.
It is considered desirable to provide a structure in which outside air is forced to flow in, and to set the wind speed of the outside air blown from the opening 11 to about 5 m/s.

In the kitchen appliance of this embodiment having such a configuration,
Since the amount of outside air necessary for combustion can be supplied from the opening 11 formed on the -L side of the gas range 1 [),
Air in the kitchen is never used for combustion, and fresh air supplied from outside can always be used. Further, since combustion air, smells, etc. are immediately exhausted from the range hood 3 as in the conventional case, there is almost no outside air load. Furthermore, the outside air supplied from the opening 11 formed around the gas range is supplied as an upward air current 19 surrounding the gas range, as shown in Fig. 2, so it functions as an air curtain. However, convection heat conduction from the gas range 10 to other parts of the kitchen can be blocked. As a result, even when using a system that air-conditions the entire kitchen, the heat generated by the gas range 10 is blocked by the air curtain, reducing the effect on the entire kitchen, resulting in efficient air conditioning. can.

Below, we will show the results of a comparative study between conventional kitchen appliances and the kitchen appliance of the present invention in a kitchen where whole air conditioning is performed.

(Margin below) *Reference example: Kitchen in a certain sanatorium Kitchen floor area: Approximately 50m2 Air conditioning method: air-cooled package air conditioner Kitchen appliance list (gas appliances only) The amount of outside air required in this case is given by the following equation.

V-K fist Q K-, coefficient 40 Q: Fuel consumption (for example, for city gas 0.00108m3/Kcal x combustion ff1Kcal
/h) That is, the required amount of outside air is as follows.

0.0OL08m3/Kcal x40x9010DK
cal/h+20 m3/h・person x 5 people 4000
m'/h ■Conventional method a) Structural load (including people and lighting) 50 xlOOKcat/h m2 =
5000Kca! /hb) Kitchen equipment heat generation load However, the removal rate by hood exhaust is 70%, and the simultaneous usage rate is 50%.

90100Kcal/h xo, 3 xo, 5'=1
860Q Kcal/hC) Outside air load (indoor conditions: 27°C, humidity 65%) Generally, the outside air load is given by the following formula.

QC=VXΔix1. 2 Qc: Outside air load (Kcal/h) ■=Outside air volume (m3/h) i: Enthalpy (Kcal/Kg) Amount of heat held by air in a certain state Δ1=i1-i2: Difference in enthalpy 1.2:20
Air specific gravity (Kg/m3) at °C, that is, the outside air load is as follows.

4000 m3/hx (19,9-15,3) Kc
al/Kg xl, 2i22100 Kcal/h Here, the value Δ1=il -12 = 19.9-15.3 is the enthalpy of air between i 1 = 19.9Kcal/Kg - summer design outside temperature and humidity i 2 =15.3Kcal/Kg +++Based on the enthalpy of air at indoor design outside temperature and humidity.

■The present invention Since the kitchen appliance according to the present invention is mainly intended for those that perform combustion work on the -L side, a comparative study was conducted assuming that the present invention was applied to a gas range and a low range. It is assumed that the heat generation load of the kitchen appliances is reduced by 596 due to the reduction in convective heat transfer due to the air curtain effect. Furthermore, it is assumed that the outdoor air load reduction due to the use of this device is 90%, and that 10% is the indoor air load.

a) I? 'The dead body load is 5000Kcal/h as before b) Kitchen equipment heat generation load 13600Kcal/h - (32000+18000)Kcal/hxO,05x
o, 5 = 12400 Kcal/h C) Outside air load (indoor conditions: 27℃, humidity 65%) Outside air supply amount of improved kitchen equipment 0.0Of08m3/Kcal x4QX (3200
0+16000) Kcal/hi2100 m3/h Outside air supply amount other than above 4000 m'/h-2100m3/h=1900
m3/h The outside air load on the room is (2100xO,l +1900) m3/hx (
19,9-15,3) Kcal/Kg x, 1.2e
11,700 Kcal/h Even if only the gas range and low range were improved in this way, the outside air load could be reduced to 53%, and the load maximal number 1 could be reduced to 71%.

Note that the present invention is not limited to the above-mentioned embodiments (if the oven is incorporated in the gas range,
It may also be configured to supply outside air directly to the combustion section. It goes without saying that outside air can also be supplied to the fryer, rice cooker, etc. in the same way. moreover,
The shape, width and length, installation position, etc. of the opening as the outside air supply section are not particularly limited. For example, they may be formed individually around each burner of a gas range. However, in this case, it goes without saying that the installation should be done with due consideration given to ensuring that it does not interfere with the work of the cook and that there is no danger of fire or the like.

Further, the outside air supply duct for supplying outside air to the kitchen appliances does not have to be installed on the floor as in the above embodiment, but may be lowered from the ceiling along the wall surface and connected to the kitchen appliances.

In this case, the connection portion with the outside air supply duct may be provided on the side surface of the kitchen appliance instead of on the bottom surface. Further, the shape, number, location, etc. of the tray and dust trap installed to prevent moisture from entering the microwave from the opening are not particularly limited. In addition, the shape of the cover that is attached to the opening formed on the top surface of the kitchen appliance to make it consistent with other surfaces of the kitchen appliance, and the shape and number of ventilation holes through which outside air flows should be set appropriately. Can be done.

Furthermore, if the speed of outside air blowing out from the opening is too fast, the flame may flicker or disappear, and on the other hand, if it is too slow, the air curtain effect will decrease, so the optimum value can be set according to each device. It is also possible to configure it as follows.

[Effects of the Invention] As described above, according to the present invention, an outside air supply section that is separate from the air conditioning system in the room in which the kitchen appliance is installed is provided near the combustion section of the kitchen appliance, and the combustion section The outside air is supplied from the outside air supply section to the combustion section in conjunction with the operation of the outside air supply section, and the outside air supplied from the outside air supply section is configured to form an air curtain around the combustion section. , It is possible to provide a highly functional and efficient kitchen appliance that increases air conditioning efficiency in the kitchen and reduces external air load.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the kitchen appliance of the present invention.
A) is a plan view, (B) is a front view, FIG. 2 is a sectional view showing a kitchen in which the kitchen appliance of the present invention is installed, and FIG. 3 is an enlarged sectional view showing the vicinity of the opening of the kitchen appliance of the present invention. FIG. 4 is a sectional view showing a kitchen equipped with conventional kitchen appliances. 1... Burner, 2... Gas range, 3... Range hood, 4... Ceiling, 5... Air outlet, 10...
Gas range, 11... Opening, 12... Outside air supply duct, 13... Connection part, 14... Duct, 15.
... Damper, 16... Tray, 16a... Flange part, 16b... Receiver is plate part, 17... Locking part, 18...
...Trap, 19...Updraft, 20...Cover No. 3 Figure 1, T6i! 11τ [K Yuku U'': I''j) December 15, 1999

Claims (3)

[Claims] (1) A kitchen appliance characterized in that an outside air supply unit that is separate from the air conditioning system in the room in which the kitchen appliance is installed is provided near the combustion section of the kitchen appliance. (2) The kitchen appliance according to claim 1, wherein the outside air supply section is configured to supply outside air in conjunction with the operation of the combustion section. (3) The kitchen appliance according to claim 1 or 2, wherein an air curtain is formed around the combustion section by the outside air supplied from the outside air supply section.