JP3817395B2 - washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning machine for cleaning by spraying a fluid such as hot water at high pressure.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a washing machine that performs washing by spraying a cleaning fluid such as hot water produced by a combustion apparatus at a high pressure has been used in factories in machine related industries. Such a washing machine can wash various objects outdoors, for example, and has high versatility.
[0003]
However, since the existing washing machine produces hot water by a combustion device and sprays and cleans the hot water, CO ₂ and NO _X are discharged, and there is a risk of fire. For this reason, it is difficult to use indoors from the viewpoint of safety management and hygiene, and it cannot be applied to objects that are difficult to move, such as machines installed in factories.
[0004]
Furthermore, since the hot water is sprayed at a high pressure in the above washing machine, the hot water particles discharged are in a fine mist form. For example, when discharged from a nozzle at 90 ° C., 65 ° C., 60 ° C., 55 ° C., 47 The temperature rapidly decreases, for example, at 44 ° C. For this reason, hot water cannot be sterilized at a position several cm away from the tip of the cleaning nozzle, and it has been impossible to obtain both sterilization and cleaning.
[0005]
Also, since hot water is sprayed at a high pressure, the hot water sprayed from the washing nozzle bounces back and scatters to the surroundings and diffuses dirt and bacteria, so it is not suitable for use in a particularly small place. Further, when used in a place surrounded by the surroundings or when sprayed on a container that is open only at the top, there is a problem that a lot of hot water is generated and the object to be cleaned cannot be seen.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, does not generate toxic exhaust gas, has no danger of fire, can be used indoors from the viewpoint of safety management and hygiene, and is optimal. It aims at providing the washing machine which can perform washing. Another object of the present invention is to provide a washing machine that can maintain the temperature of the washing fluid even at a position away from the washing nozzle and can obtain both a sterilizing action and a washing action .
[0007]
[Means for Solving the Problems]
The washing machine according to the present invention is a heat exchanger in which steam supplied from a pipe of a steam boiler in a factory is guided, the temperature of water flowing into the pipe is raised by the supplied steam to make hot water, and the hot water flows out . Hot water flowing out from the heat exchanger is guided, hot water guided to the central path is discharged from the central discharge port, hot water guided to the outer peripheral path is sprayed from the peripheral discharge port to the object, and the hot water discharged from the central discharge port A high-pressure supply mechanism for supplying hot water to the central path at a high pressure, a steam supplied from the pipe, and a boiling water tank for supplying steam directly to the hot water supplied from the heat exchanger, and the peripheral discharge port And a low pressure supply mechanism for supplying hot water jetted from the boiling water tank to the outer peripheral path at a low pressure, and the low pressure supply mechanism ejects hot water at a low pressure for sterilization. The hot water jet pressure The high pressure hot water for cleaning is ejected in a mist form from the central outlet of the nozzle, and the low pressure hot water for sterilization is ejected from the peripheral outlet in a non-mist state. The low-pressure jet and the high-pressure jet can be selected.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, although the washing machine by the present invention is explained concretely based on an embodiment, the washing machine is not limited by this embodiment. FIG. 1 is a fluid circuit diagram of a cleaning machine according to the present invention, FIG. 2 is a system diagram during sterilization with boiling water , and FIG. 3 is a partial sectional side view showing the vicinity of the tip of a cleaning nozzle according to the present invention.
[0009]
In the drawing, the washing machine includes a first heat exchanger 10a, a second heat exchanger 10b, and a washing nozzle 20, and the supplied water is low pressure such as tap water or high pressure by the pressure pump 44, directly or directly. The heat is supplied to the cleaning nozzle 20 through the heat exchangers 10a and 10b, and is washed or sterilized by being jetted onto the object at a low pressure or a high pressure by the cleaning nozzle 20. The heat exchangers 10a and 10b raise the temperature of water flowing through the heat exchangers 10a and 10b by separately supplied steam. In addition, although water was used for the fluid used for washing | cleaning etc. in this embodiment, it is not limited to this, A suitable fluid can be used within the meaning of this invention.
[0010]
In the fluid circuit of the washing machine (see FIG. 1), steam supplied from a boiler pipe or the like is introduced into the fluid circuit by opening and closing a valve 31 and filtered by a strainer 32, and unnecessary moisture is removed from the steam trap. 33 to eliminate. Since most factories have piping from steam boilers, steam can be used as a heat source as described above, which eliminates the need for combustion equipment and eliminates the generation of toxic exhaust gas. There is no risk of fire and running costs will not increase due to fuel consumption.
[0011]
The vapor pressure of the filtered vapor is measured by a pressure gauge 34 and is reduced by a pressure reducing valve 35 as necessary. Further, the vapor pressure of the supply vapor is measured by the pressure gauge 36, and the vapor is released to the atmosphere by the safety valve 37 to suppress the vapor pressure within the maximum working pressure. The maximum operating pressure is 1.0 kg / cm ² , which is a legal regulation, but the setting is appropriate within the scope of the present invention. The supply steam brought within the maximum operating pressure by the safety valve 37 is introduced into the heat exchangers 10a and 10b from the steam inlets 11a and 11b, and can be introduced into a boiling water tank 46 which will be described later by opening and closing the temperature control valve 38. is there.
[0012]
Here, the heat exchangers 10a and 10b have a configuration in which the pipes 12a and 12b through which the spirally wound water flows are sealed by the heat insulating covers 13a and 13b, and are inlets that are one ends of the pipes 12a and 12b. 14a and 14b and outlets 15a and 15b which are the other ends protrude, and the steam inlets 11a and 11b described above are provided on the sides of the heat insulating covers 13a and 13b. The steam introduced into the heat exchangers 10a and 10b exchanges heat with water supplied into the pipes 12a and 12b, which will be described later, to raise the water temperature, and then discharged from the steam outlets 16a and 16b, respectively. The steam trap 39 removes unnecessary water.
[0013]
Further, water that is a fluid to be ejected is supplied from a water tap 41, filtered by a strainer 42, and then supplied into the fluid circuit through a check valve 43. The water that has passed through the check valve 43 is directly sent to the washing nozzle 20 at a low pressure such as a water pressure, or is pressurized by the pressure pump 44 to become a high pressure from the inlet 14a of the heat exchanger 10a into the pipe 12a. Or from the inlet 14b of the heat exchanger 10b into the pipe 12b at a low pressure such as water pressure. In addition to the above configuration, any configuration having a high-pressure supply mechanism (such as a pressure pump 44) or a low-pressure supply mechanism (such as a water pressure supply mechanism) that can eject a high-pressure high-temperature fluid or low-pressure fluid from the cleaning nozzle 20 is appropriate. The temperature of the water sent from the inlet 14a into the pipe 12a of the heat exchanger 10a is increased in advance by pressurization, and further, heat is exchanged by the heat exchanger 10a and the temperature is increased. To be supplied.
[0014]
The water sent at low pressure from the inlet 14b into the pipe 12b of the heat exchanger 10b rises in temperature due to heat exchange in the heat exchanger 10b, and flows out from the outlet 15b in a hot water state. The hot water is directly supplied to the washing nozzle 20 in a low-pressure hot water state, or is introduced into the boiling water tank 46 by opening and closing the ball tap 45, and steam introduced into the boiling water tank 46 by opening the temperature control valve 38. Further, the temperature is raised to boiling water, which is supplied to the washing nozzle 20 through the electromagnetic pump 47 in the state of low-pressure boiling water such as tap water. In addition to this, in order to guide the fluid / steam to a necessary path, a mechanism / device / apparatus (not shown) is provided.
[0015]
As shown in FIG. 3 , the cleaning nozzle 20 has a central discharge port 20a at the center of the tip, and is provided around the outer periphery of the central discharge port 20a with a peripheral discharge port 20b spaced apart, and the fluid A is mainly introduced into the pipe. The double pipe structure includes a central pipe 21a and an outer pipe 21b through which the fluid B is guided. The fluid A is ejected from the central discharge port 20a and the fluid B is ejected from the peripheral discharge port 20b. The fluids A and B are waters having different temperatures and pressures in this embodiment.
[0016]
A fixed guide 22 is provided at the tip of the central tube 21a, and a slide guide 23 is provided around the periphery of the peripheral discharge port 20b. A positioning lock handle 24 and a slide guide holder 25 are provided on the outer periphery thereof. It has been. A central tube guide 26 is disposed between the slide guide 23 and the central tube 21a. Then, by rotating the positioning lock handle 24, the slide guide 23 is moved in the front-rear direction by a screw action, so that the peripheral discharge port 20b can be enlarged / reduced, and the fluid B discharged from the peripheral discharge port 20b The ejection state can be adjusted.
[0017]
An inlet 27 for the fluid B is formed below the outer peripheral pipe 21 b, and the flow rate of the fluid B can be adjusted by a flow rate adjusting valve 28 installed below the inlet 27. A centering cap 29 fixed to the central tube 21a is fitted to the rear end of the outer tube 21b by a screw action so that the central tube 21a can be centered. The cleaning nozzle 20 can selectively eject only one of the central discharge port 20a and the peripheral discharge port 20b or both at the same time, and can obtain both a sterilizing action and a cleaning action as will be described later .
[0018]
Next, the state of use of the cleaning machine of the present invention will be described separately for the case of sterilization with boiling water and the case of cleaning with high-pressure hot water .
[0019]
In the case of sterilization with boiling water, as shown in FIG. 2, the steam supplied from the boiler piping or the like is supplied from the steam inlet 11b into the heat exchanger 10b via the safety valve 37 and from the steam outlet 16b. While being discharged to the steam trap 39, it is supplied into the boiling water tank 46 through the temperature control valve 38. In addition, the water supplied through the check valve 43 follows a route supplied to the pipe 12b in the heat exchanger 10b in a state of low-pressure room-temperature water such as water pressure.
[0020]
Then, heat exchange between normal temperature water and steam is performed in the heat exchanger 10b, and warm water flows out from the outlet 15b at a low pressure, flows into the boiling water tank 46 side only through the open pole tap 45, and the boiling water. The steam supplied through the temperature control valve 38 in the tank 46 is converted into, for example, hot water / boiling water close to 100 ° C. Here, for example, since the steam temperature at a supply steam pressure of 1.0 kg / cm ² is about 100 ° C., it has been difficult to secure hot water of 100 ° C. from the heat exchange rate. By supplying hot water into the tank 46 and directly supplying steam with a steam pressure of 1.0 kg / cm ² into the boiling water tank 44, low-pressure boiling water close to 100 ° C. can be secured. The boiling water is pumped up by an electromagnetic pump 47 and is supplied to the outer peripheral path between the central pipe 21a and the outer peripheral pipe 21b of the cleaning nozzle 20 at a predetermined low pressure such as tap water pressure (about 2 kg / cm ² ). Supplied low-pressure boiling water (fluid B) is ejected is discharged from around the discharge port 20b of the cleaning nozzle 20.
[0021]
In this case, it is possible to adjust the size of the surrounding discharge port 20b to move the slide guide 23, it is possible to adjust the ejection-discharge state such as a discharge particle discharge heat and Yumaku fluid B spit. Moreover, by discharging the boiling water at a low pressure such as tap water so as not to diffuse, it is possible to prevent a rapid temperature drop and maintain the discharge port temperature for a long distance. Therefore, for example, it is possible to discharge hot water or boiling water with almost no temperature difference between the discharge port and the landing point, for example, the discharge point is 95 ° C. A high temperature state can be maintained even at a distance, and high sterilization / disinfection action can be obtained.
[0022]
Further, in the case of washing with high-pressure hot water, in FIG. 1, steam supplied from a boiler pipe or the like is supplied from the steam inlet 11a into the heat exchanger 10a via the safety valve 37, and the steam outlet 16a. To the steam trap 39. The water supplied through the check valve 43 is increased in pressure by the pressurization of the pressure pump 44, heated, and supplied to the pipe 12a in the heat exchanger 10a. The discharge temperature of hot water passing through the heat exchanger 10a and exchanging heat with steam is 100 ° C. to 105 ° C., and continuous discharge is possible at a temperature around 100 ° C. or 100 ° C. or higher. Then, the high-pressure hot water is supplied from the outlet 15a to the central path in the central tube 21a of the cleaning nozzle 20, and the hot water (fluid A) is sprayed from the central discharge port 20a of the cleaning nozzle 20 at a predetermined high pressure. . The pressure pump 44 is configured to pressurize and heat room temperature water, and for example, a single 10-liter heat exchanger sufficiently discharges hot water sufficiently close to 100 ° C or 100 ° C or higher at 7.2 l / min or the like. It is possible.
[0023]
As described above, the cleaning machine according to the present embodiment supplies the cleaning nozzle with two systems of low pressure (water pressure, etc.) and high pressure (pump pressure of the pressure pump, etc.) and sprays it to the cleaning nozzle. - is configured to implement the functions of washing. And the legal restrictions which are the maximum use pressure 1.0kg / cm < ² > or less and the container capacity of a heat exchanger 0.04m < ³ > or less are cleared.
[0024]
The traditional steam heat exchanger is large, slender, fixed installation type, has a large installation space, and is expensive. However, the heat exchanger used in the present invention is a multistage type that is subdivided into a plurality of heat exchangers. It is preferable to reduce the size of the washing machine and to attach the caster to the washing machine so that the washing machine can be moved. For example, Kawari using one thing container volume 0.04 m ³ of the heat exchanger, the total container volume is more to subdivision and the like to use a heat exchanger multi-stage to be 0.04 m ^3.
[0025]
【The invention's effect】
As described above, since the cleaning machine according to the present invention has the above-described configuration, it does not generate toxic exhaust gas and does not cause a fire. It can be used indoors from the viewpoint of safety management and hygiene, and is optimal. This makes it possible to perform simple cleaning. Further , the temperature of the cleaning fluid can be maintained even at a position away from the cleaning nozzle, and both the sterilizing action and the cleaning action can be obtained.
[Brief description of the drawings]
FIG. 1 is a fluid circuit diagram of a cleaning machine according to the present invention.
FIG. 2 is a system diagram during sterilization of boiling water.
FIG. 3 is a partial sectional side view showing the vicinity of the tip of a cleaning nozzle according to the present invention.
[Explanation of symbols]
10a, 10b Heat exchanger 20 Cleaning nozzle 20a Central discharge port 20b Peripheral discharge port 21a Central tube 21b Outer tube 44 Pressure pump 46 Boiling water tank

Claims (1)

Steam supplied from a pipe of a factory steam boiler is led, and the temperature of water flowing into the pipe is raised by the supplied steam to make hot water, and a heat exchanger that flows out the hot water, and the heat exchanger Outflowing hot water is guided, hot water guided to the central path is the central discharge port, hot water guided to the outer peripheral path is jetted from the peripheral discharge port to the object, and hot water sprayed from the central discharge port is the central path A high pressure supply mechanism for supplying high pressure, steam supplied from the pipe is guided, a boiling water tank for directly supplying steam to the hot water supplied from the heat exchanger, and hot water ejected from the surrounding discharge port A low-pressure supply mechanism that supplies a low pressure from a water tank to the outer peripheral path , and the pressure of hot water that is low-pressure ejected for sterilization by the low-pressure supply mechanism is higher than the pressure of hot water that is high-pressure ejected for washing by the high-pressure supply mechanism Configured to be low pressure And, a high-pressure hot water for the cleaning and jetting a low pressure hot water for blowing and sterilizing with mist from the center discharge port of the nozzle in a state not mist from ambient discharge port, low ejection and a high-pressure ejection of the heat hot water selection A washing machine characterized in that it is possible.

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