JP2000051812A - Garbage treating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely drain condensed water into a sewer pipe and to make manufacturing cost inexpensive in a kitchen waste treating machine. SOLUTION: Water content in garbage is evaporated by heating the garbage of wet refuse A in a heating room 13 and gas is returned to the heating room 13 by generating flow in a flow path by a fan 42 for circulation provided in a return pipe 39 going out from the heating room 13 and returning to the heating room 13. In addition, a fan 41 for cooling linked with the fan 42 for circulation cools a fan case 45 with air and gas contg. steam generated from the garbage is cooled in the fan case 45 and condensed water is drained into a sewer pipe 1 through a drain part 30 branched from the return pipe 39 on the downstream of the fan 42 for circulation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposer for drying garbage such as garbage.

[0002]

2. Description of the Related Art Heretofore, there has been known a garbage disposer in which garbage such as garbage is dried to prevent decay and odor components generated during treatment are deodorized. Generally, such a kitchen waste treatment machine is configured to condense water vapor generated by heating kitchen waste, and discharge odor components together with condensed water to deodorize.

Since garbage is mainly generated in the kitchen, it is convenient to install a garbage disposal machine indoors.
There are many factors that degrade the indoor environment, such as emission of odor, increase in humidity due to emission of water vapor, and increase in temperature due to heat sources, and it has been difficult to install indoors. Therefore, as shown in FIG. 3, the applicant of the present application has proposed a heating unit 10 for heating kitchen waste and a condensing unit 2 comprising a fin tube 21 for cooling and condensing steam.
0, a return section 40 for communicating the downstream side of the condenser section 20 with the heating chamber 13, a fan 42 for returning gas from the condenser section 20 to the heating section 10 to the return section 40, and water condensed in the condenser section 20. And a drainage unit 30 for draining the garbage to the outside, and has previously proposed a garbage disposal machine that heats the garbage to condense the generated steam, and puts the heating unit 10 in a negative pressure state to dry the garbage. In this kitchen waste treatment machine, the gas containing a large amount of water vapor in the heating unit 10 flows smoothly to the condensation unit 20 by being forcibly returned to the heating unit 10 by the fan 42, and is cooled by the condensation unit 20 to remove the water vapor. Since the gas whose content has decreased is returned to the heating unit 10 again, the moisture contained in the garbage can be efficiently evaporated, and the water vapor can be efficiently condensed. In addition, the heating unit 10 becomes negative pressure by the fan 42, and the heating chamber 13 forming the heating unit 10
The odor can be prevented from leaking from the sealing portion of the lid 13a, and the amount of heating can be reduced by lowering the boiling point. In addition, the odor components generated from the kitchen waste are drained to the sewer pipe 1 together with the condensed water, thereby enabling use in the kitchen.

[0004]

However, in order to efficiently condense, it is necessary to provide the fin tube 21 of the condensing section 20 for a long time. Then, the kitchen waste disposal machine of the present invention solves the above-mentioned problems,
An object of the present invention is to reduce the manufacturing cost of the condenser.

[0005]

According to a first aspect of the present invention, there is provided a kitchen waste treatment machine for heating kitchen garbage such as garbage, the kitchen waste being generated from the kitchen garbage in communication with the heating unit. A condenser for cooling a gas containing water vapor, a drainage channel for draining water condensed in the condenser, and a circulation fan for forcibly sending the gas dehumidified in the condenser to the heater are provided. In the kitchen waste treatment machine, the gist is that a fan case for accommodating the blades of the circulation fan functions as the condenser.

According to a second aspect of the present invention, there is provided a garbage disposal machine according to the present invention, wherein a cooling fan for air-cooling the fan case is provided. .

[0007] In the garbage disposal machine according to the first aspect of the present invention having the above configuration, the heating unit heats the garbage such as garbage to evaporate the water contained in the garbage, and the condensing unit communicated with the heating unit. The gas containing water vapor generated from the kitchen waste is cooled, the drainage channel drains the water condensed in the condensing section to the outside, and the circulation fan forcibly sends the gas dehumidified in the condensing section back to the heating section. In this case, the fan case that houses the blades of the circulation fan functions as a condenser. That is, the gas containing water vapor generated from the kitchen is pressurized in the fan case and cooled, so that the water vapor in the gas condenses. Then, the circulation fan forcibly sends the gas dehumidified in the fan case back to the heating unit, and the drainage channel drains water condensed in the condensation unit to the outside. For this reason, most of the odor generated from the kitchen waste is discharged to the outside together with the condensed water. Therefore, since the fan case also serves as a condensing section, the structure of the garbage disposal machine is simplified, the space for the condensing section is reduced, the number of parts is reduced, and the number of parts is reduced as compared with the case where the condensing section is provided independently. Can be manufactured at low cost.

[0008] Further, the present invention has the above-mentioned structure.
The garbage processing machine according to claim 1, wherein the heating unit heats the garbage such as garbage to evaporate water contained in the garbage, and the condensing unit communicated with the heating unit is generated from the garbage. The gas containing water vapor is cooled, the drainage channel drains the water condensed in the condensing section to the outside, and the circulation fan forcibly sends the gas dehumidified in the condensing section back to the heating section. In this case, the cooling fan air-cools the fan case that houses the circulation fan blades. In other words, a gas containing water vapor generated from kitchen waste is pressurized in the fan case, and the water vapor in the gas is condensed by being cooled, and the condensation is promoted by the cooling fan cooling the fan case by air. Then, the circulation fan forcibly sends the gas dehumidified in the fan case back to the heating unit, and the drainage channel drains water condensed in the condensation unit to the outside. For this reason, most of the odor generated from the kitchen waste is discharged to the outside together with the condensed water. Therefore, cooling of the gas in the fan case is promoted by the cooling fan, so that water vapor in the fan case can be efficiently condensed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the structure and operation of the present invention described above, a garbage processing machine of the present invention will be described below. FIG. 1 is a schematic configuration diagram of a kitchen waste treatment machine of the present invention. This garbage processing machine is roughly divided into a heating unit 10 for heating the garbage A, a condensing unit 20 for condensing water vapor generated from the garbage A, a draining unit for communicating with the condensing unit 20 and the sewage pipe 1, and drainage and storage. It comprises a drainage unit 30 that shuts off ventilation according to the state of the water, and a return unit 40 that sends back the gas cooled by the condensation unit 20 to the heating unit 10 again.

The heating unit 10 includes a processing tank 11 for storing the garbage A, a processing tank heater 12 for heating the processing tank 11,
A heating chamber 13 having a heat insulating structure for accommodating these components is provided. In addition, a lid 13a that opens and closes to put the processing tank 11 in and out is formed in an upper part of the heating chamber 13.

The return section 40 forms a return pipe 39 communicating the downstream side of the condenser section 20 with the heating chamber 13.
9 is provided with a gas heater 43 for heating the gas and a blowing nozzle 44 for injecting the gas from the downstream end toward the garbage A in the heating chamber 13.

The return section 40 is provided with a circulation fan 42 for generating a flow downstream and a fan case 45 for accommodating the blades of the circulation fan 42. Motor 46 for rotating 42
And a cooling fan 41 that is fixed to the rotating shaft of the circulation fan 42 and rotates to cool the fan case 45 by air. The circulation fan 42 and the cooling fan 41 are provided so as to be rotated by the same motor 46.

The condensing section 20 is composed of the cooling fan 41 and the fan case 45, forcibly cools the air containing water vapor generated from the garbage, and separates the air into condensed water and dried air.

The drainage section 30 includes a down flow passage 32 through which water condensed by the fan case 45 flows downward, an up flow passage 33 that once rises from the down flow passage 32, and a down flow from the up flow passage 33 to the drain 1 again. S-shaped tube 31 forming drainage channel 34 communicating with
It consists of.

Next, the operation of the kitchen waste disposal machine will be described. When the garbage A is put into the processing tank 11 and the drying operation is started, the heating of the processing tank 11 is started by the processing tank heater 12, and the circulation fan 42 and the return section 40 are started.
The gas heater 43 is operated. Therefore, processing tank 1
1 and the temperature in the heating chamber 13 rise, the water vapor contained in the garbage A is generated, the air filled in the heating chamber 13 expands, and the air pressure in the heating chamber 13 rises. Then, the circulation fan 42 generates a differential pressure between the upstream and downstream of the return pipe 39. Therefore, the pressure increase in the return pipe 39 downstream of the circulation fan 42 pressurizes the differential pressure of the fan to lower the level of the condensed water in the S-shaped pipe 31 to a level a or lower. Then, when the pressure reaches the water level a, a part of the air in the heating chamber 13 is discharged from the S-shaped tube 31 and the pressure in the heating chamber 13 stops increasing.

On the other hand, when a predetermined time elapses after the heating by the processing tank heater 12 is started, the gas containing a large amount of water vapor in the heating chamber 13 is cooled when passing through the fan case 45. At this time, the gas flowing into the fan case 45 is cooled and the dew point is lowered, so that the water vapor contained in the gas is condensed into water and flows down into the S-shaped tube 31. And
The gas having a reduced water vapor content is heated to a high temperature by the gas heater 43 when flowing through the return pipe 39, and is jetted to the garbage A in the processing tank 11 by the spray nozzle 44. By directly injecting the gas heated to a high temperature by the gas heater 43 into the garbage A as described above, the evaporation of the moisture contained in the garbage A is promoted, and the heated garbage A is returned to the inside of the return pipe 39 by heating. Condensation is also prevented. On the other hand, the water that has condensed and flowed down to the S-shaped pipe 31 accumulates in the U-shaped portion connected from the down flow path 32 to the up flow path 33, and the accumulated water rises to the water level a, so that the water rises from the down flow path 32. Channel 3
The flow path for communicating gas to 3 is shut off. Therefore, the space including the heating chamber 13, the fan case 45, and the return pipe 39 is sealed from the outside.

Further, since the blowing nozzle 44 is the largest pressure loss body in the path of the return section 40, in other words, since there is almost no pressure loss upstream of the circulation fan 42, the pressure in the heating chamber 13 becomes The fan pressure is reduced from the pressure in the return pipe 39 downstream of the circulation fan 42.

The processing tank heater 12 is ON / OFF controlled by a thermistor (not shown) provided at the bottom of the heating chamber 13 so that the temperature in the processing tank 11 becomes a predetermined temperature. When garbage is included in the garbage A, if the temperature of the processing tank 11 exceeds 130 ° C., the wrap or the like is decomposed and harmful chlorine gas is generated.
The temperature is preferably set to 130 ° C. or lower.

The odor component generated from the garbage A is
Most of them are dissolved in condensed water and deodorized. Furthermore, S
Since the inside of the drainage section 30 is isolated from the atmosphere by the condensed water that has flowed down into the U-shaped pipe 31, the heating chamber 1 is condensed with water vapor.
The pressure in the path from 3 to the circulation fan 42 decreases.
Therefore, when the condensation of the steam proceeds and the pressure downstream of the circulation fan 42 becomes lower than the atmospheric pressure, the condensed water in the down flow passage 32 is sucked up, and the water level rises.

As the condensation of water vapor continues, the pressure in the return pipe 39 keeps decreasing, and the condensed water in the S-shaped pipe 31 continues to be sucked up. Then, the air pressure in the return pipe 39 further decreases, the upper end of the water level reaches the water level c, and when the lower end of the water level reaches the pressure of the water level a, air enters the S-shaped pipe 31 and the pressure in the return pipe 39 decreases. Stops.

As described above, when the air pressure in the return pipe 39 becomes equal to or less than the predetermined value, the air is introduced into the return pipe 39 because the backflow of the condensed water into the heating chamber 13 is prevented and This is because the steam generated from the garbage A in the processing tank 11 is smoothly transferred to the condensing unit 20. This is because a certain amount or more of air serving as a water vapor carrier is required to smoothly transport the water vapor to the condensation unit 20.

Therefore, the pressure inside the return pipe 39 is automatically adjusted by the S-shaped pipe 31 of the drainage section 30 within a pressure range determined by the shape and cross-sectional area of the S-shaped pipe 31.

As described above, the air remaining in the heating chamber 13 is circulated between the heating unit 10 and the condensing unit 20 as a carrier for water vapor generated from the garbage A until the drying process is completed. become. When the water in the garbage A completely disappears, the processing tank heater 12, the gas heater 43, and the circulation fan 42 are turned off,
The drying process of the garbage A ends.

Next, the principle that the inside of the heating chamber 13 is maintained at a negative pressure or a slight positive pressure in a steady state by the kitchen waste disposal apparatus according to the present invention will be described. Since the downstream side of the circulation fan 42 of the return section 40 is connected to the drainage section 30,
The pressure range in the return pipe 39 is determined by the S-shaped pipe 31. That is, assuming that the pressure in the return pipe 39 is P2, the maximum value of P2 is equal to the position head h1 (= water level b-water level a) of the upflow channel 33. Similarly, the minimum value of P 2 is
Is equal to the head -h2 (= water level a-water level c). This position head -h2 is equal to -V0 / S, where V0 is the volume of the condensed water and S is the cross-sectional area of the downstream flow path 32. Therefore, the pressure range in the return pipe 39 is expressed as -h2≤P2≤h1.

On the other hand, if the pressure on the heating chamber 13 side is P1 and the differential pressure generated by the circulation fan 42 is ΔP, the relational expression of P2 = P1 + ΔP is established between P1 and P2, By transforming the equation, a relational equation of P1 = P2− △ P is obtained. Here, the maximum value of P2 is regulated by the ascending flow path 33 so as to be equal to or less than h1. Therefore, even if P1 is the maximum value, it is a value obtained by subtracting ΔP from h1. That is, if P1 is less than a slight positive pressure and h1 is less than ΔP, P1 becomes
It is always equal to atmospheric pressure or negative pressure.

For example, the differential pressure ΔP by the circulation fan 42
Is 50 mmH ₂ O, h1 is 40 mmH ₂ O
By setting up channel 33 so that, since the pressure P2 in the return pipe 39 is not be more than 40mmH ₂ O,
The pressure P1 of the heating chamber 13 is always -10 mm in a steady state.
A negative pressure equal to or lower than H ₂ O is obtained, and the inside of the heating chamber 13 can be kept in a reduced pressure state.

As described above, in a steady state in which the generation of water vapor in the heating unit 10 and the condensation of water vapor in the condensation unit 20 continuously progress, the amount of heat supplied to the heating unit 10 and the amount of heat taken by the condensation unit 20 are not balanced. However, since the air pressure in the heating chamber 13 is always kept at a negative pressure or a slight positive pressure, even if the airtightness of the heating chamber 13 is not so high, odors and water vapor leak from the heating chamber 13. Never.

In the initial drying state until the steady state is reached, the heating chamber 13 has a positive pressure, but the pressure is relatively small, and is very short compared to the total time required for the drying process of the garbage A. Since it is time, odor and water vapor do not leak even when an inexpensive seal member is used.

Next, a case where the kitchen waste disposal apparatus is used in a state where no condensed water is stored in the S-shaped tube 31 will be described. When garbage A is put into the processing tank 11 and the lid 13a is closed, and the processing tank heater 12, the circulation fan 42 and the gas heater 43 are turned on, steam is generated and the air in the heating chamber 13 expands. The expanded air is discharged from the drainage section 30 to the sewer pipe 1 as it is. In this case, since the inside of the heating chamber 13 has a value that is lower than the atmospheric pressure by ΔP, the odor and the water vapor do not leak from the heating chamber 13.

The water vapor generated from the garbage A is condensed by the condensing section 20 to form condensed water. The condensed water falls and accumulates in the S-shaped tube 31. When the condensed water reaches the water level a, the heating chamber 13 is shut off from the atmosphere.

Thereafter, as in the case where condensed water is stored in the S-shaped tube 31 from the beginning, the drying of the garbage A is performed while the pressure in the heating chamber 13 is automatically adjusted by the drainage unit 30. proceed. When h1 is not more than ΔP, the air pressure P1 in the heating chamber 13 is always kept at a negative pressure in the steady state.

As described above, according to the kitchen garbage disposer of the present embodiment, it is possible to prevent odor leakage and increase in humidity by condensing water vapor generated from heated garbage A and discharging it together with odor. Therefore, deterioration of the indoor environment can be prevented. In particular, the circulation fan 42 of the return pipe 39
Since the drainage section 30 is communicated downstream, the pressure in the heating chamber 13 becomes slightly lower than the positive pressure, and leakage of odor and water vapor from the gap in the lid 13a of the heating chamber 13 can be prevented. Therefore, there is no need to make the sealing performance of the lid 13a excessively high. In addition, the drying process can be performed at a low temperature with a reduced boiling point, so that energy required for heating can be reduced, power consumption can be reduced, and a rise in indoor temperature can be reduced. In addition, since there is no need to provide expensive devices such as a vacuum pump device, a deodorizing device, and a steam discharging device, the structure can be simplified and the cost can be reduced.

Further, since the fan case 45 accommodating the rotating circulation fan 42 also serves as the condensing section 20, it is not necessary to provide the condensing section 20 independently. Therefore, the structure is simplified, the space for installing the condensing section can be omitted, and the number of parts can be reduced, and the cost of the kitchen waste disposal machine can be reduced.

Furthermore, since the cooling fan 41, which works in conjunction with the motor 46, cools the fan case 45 by air, the water contained in the garbage A can be efficiently evaporated and the generated water vapor can be efficiently condensed, and the drying performance can be improved. be able to. Moreover, conventionally, since the gas after passing through the circulation fan 42 has a positive pressure, the water vapor remaining in the gas may be condensed and accumulated in the fan case. Since the water is positively condensed and drained in the case 45, the condensed water does not remain in the fan case 45. Further, since the circulation fan 42 and the cooling fan 41 are rotated by the same motor 46, there is no need to provide a motor for driving the cooling fan 41.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that the present invention can be carried out in various modes without departing from the gist of the present invention. It is.

For example, as shown in FIG. 2, a plurality of plate-shaped fins 47 may be provided on the outer periphery of the fan case 45 to increase the surface area of the fan case 45 and increase the air cooling effect of the cooling fan 41. Alternatively, a configuration may be employed in which fins are provided inside the fan case 45 to increase the contact area of the flowing gas and increase the gas cooling effect.

Further, the structure may be such that the vapor in the gas is condensed in the fan case 45 without providing the cooling fan 41 and the fins 47. Alternatively, the cooling fan 4
A configuration including the fins 47 without 1 may be used.

The gas flowing through the return pipe 39 may not be heated by the gas heater 43.

Further, the water contained in the garbage A may be evaporated by hot air heated by the gas heater 43 without using the processing tank heater 12.

Further, although the heating chamber 13 is set to a negative pressure by closing the heating chamber 13, a configuration may be adopted in which the heating chamber 13 is not set to a negative pressure without setting the heating chamber 13 to a closed state.

The blades of the circulation fan 42 and the cooling fan 41 for cooling the fan case 45 may be provided on separate rotating shafts, and the blades of the circulation fan 42 and the fan case 45 may be cooled. A configuration in which the cooling fan 41 and the cooling fan 41 are rotated by different motors may be used.

[0042]

As described in detail above, claim 1 of the present invention
According to the garbage processing machine described above, the fan case also serves as the condensing part, so that the structure is simplified, the space for installing the condensing part can be omitted, and the number of parts can be reduced to make the garbage processing machine inexpensive. It has an excellent effect that it can be done.

Further, according to the garbage processing machine of the second aspect of the present invention, in addition to the effect of the garbage processing machine of the first aspect, the cooling of the gas is promoted by the cooling fan that cools the fan case, and the steam is removed. The amount of condensate increases, and the drying of the garbage and the removal of the odor can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a kitchen waste disposal machine as one embodiment.

FIG. 2 is a schematic configuration diagram of a condenser section as a second embodiment.

FIG. 3 is a schematic configuration diagram of a conventional kitchen waste processing machine.

[Explanation of symbols]

 10 Heating chamber 11 Processing tank 13 Heating chamber 20 Condensing section 21 Fin tube 30 Drainage section 31 S-shaped pipe 39 Return pipe 40 Return section 41 Cooling Fan 42: Circulating fan 43: Gas heater 44: Spray nozzle 45: Fan case 47: Fin

Claims (2)

[Claims] 1. A heating unit for heating kitchen garbage such as garbage, a condenser communicating with the heating unit for cooling a gas containing water vapor generated from the kitchen garbage, and draining water condensed in the condensation unit to the outside. And a circulation fan for forcibly sending back the gas dehumidified in the condensing section to the heating section, wherein a fan case accommodating the blades of the circulation fan functions as the condensing section. Garbage disposal machine characterized by having made it. 2. A garbage disposal machine comprising a cooling fan for cooling said fan case by air.