KR200295824Y1 - High-pressure washer of have oil cooler function - Google Patents

Abstract

The present invention includes an oil cooler having a plurality of pipes and a gear pump therein, and the oil filled in the chamber of the plunger pump is introduced into the oil cooler by the driving force of the gear pump so that the oil passes through the oil cooler. We propose a high-pressure washer configured to cool down and then flow back into the chamber.

Description

HIGH-PRESSURE WASHER OF HAVE OIL COOLER FUNCTION}

The present invention relates to a high pressure washer, and more particularly, to a high pressure washer having a device capable of cooling oil filled in a plunger pump.

In general, the high pressure washer is to drive the plunger pump with a motor to inject high pressure water, which is to treat impurities in the waterproofing part before the waterproofing work or to clean up the construction site, wash the wheels at the construction site, and food processing site. Cleaning work, house debris removal, ship repair and cleaning (removing moss, barnacles, old paint, etc.), vehicle cleaning, grease removal from maintenance shops, tank and heat exchanger cleaning from chemical plants, adhesive advertisements Applications, such as cleaning plastic boxes of food and beverage companies, are widely used.

However, since the high pressure washer does not have a separate device for cooling the oil filled in the chamber of the plunger pump, the pump receives heat when used for a long time, and there is a problem that the oil evaporates or the temperature of the oil rises.

In addition, due to the above-mentioned problems, various components of the high pressure washer are damaged, and in particular, the expensive plunger pump is damaged, which not only increases the economic burden on the consumer, but also causes high-temperature oil to be ejected, causing a safety accident. there was.

Therefore, an object of the present invention for solving the above problems is to provide a high pressure washer having a device capable of cooling the oil filled in the chamber of the plunger pump.

Another object of the present invention is to provide a high pressure washer that can prevent breakage of the plunger pump even in a long time use.

Still another object of the present invention is to provide a high pressure washer having an oil cooling function that can prevent evaporation of the oil.

The present invention in the first aspect for achieving the object as described above; In the conventional high pressure washer comprising a plunger pump for generating a high pressure of the water supplied from the outside at high pressure, and a chamber in which the plunger pump is filled with oil for smooth operation of the pump,

An oil cooler connected to the plunger pump and cooling the oil filled in the chamber;

It is installed between the chamber and the oil cooler, characterized in that it consists of a gear pump for introducing the oil in the chamber into the oil cooler to force circulation.

1 is a system diagram of a high pressure washer having a device capable of cooling oil in a plunger pump according to an embodiment of the present invention.

2 is a flow chart of a high pressure washer having an oil cooling function according to the present invention.

3 is a view showing the configuration of the oil cooler shown in FIG.

4 is a cross-sectional view of the oil cooler.

5a and 5b are graphs showing the effect of temperature increase when the oil cooler according to the present invention is installed.

<Description of the symbols for the main parts of the drawings>

20: condenser tank 22: oil cooler

24: gear pump 26: plunger pump

28: chamber 30: pressure gauge

32: safety valve 34: accumulator

36: unload valve 44: pipe

46: cooling fin

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals for the same components, even if displayed on different drawings as possible. In addition, in describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

First, the concept of a high pressure washer having an oil cooling function proposed by the present invention is provided with an oil cooler and a gear pump having a plurality of pipes therein, and the driving force of the gear pump is filled in the chamber of the plunger pump. It is to propose a high pressure washer configured to introduce oil into the oil cooler so that the oil cools while passing through the oil cooler and then flows back into the chamber.

According to an embodiment of the present invention, the configuration of the high pressure washer having the oil cooling function proposed above is as shown in FIGS. 1 and 2. 1 and 2, the high pressure washer to be implemented in the present invention is a ball valve (ball valve) (12) is installed and the water tank 10 and the water contained in the water tank 10 is predetermined It consists of a supply pump (supply pump) 14 to be sent to the condenser tank 20 with a driving force of. The filter 16a removes various foreign substances remaining in the water supplied from the supply pump 14. The float valve 18 controls the amount of water supplied to the condenser tank 20. Preferably, the float valve 18 is automatically shut off when the amount of water in the condenser tank 20 is contained. Prevents water overflow. At this time, if the condenser tank 20 is filled with a predetermined amount of water, the float valve 18 is turned off, but the above-described supply pump 14 is also stopped. Here, the filter 16b is installed inside the condenser tank 20. The filter 16b serves to remove foreign substances remaining in the water supplied to the oil cooler 22 once more. A normal drain valve 21 is provided on the bottom of the condenser tank 20.

On the other hand, the oil cooler (oil cooler) (22) is a component of the present invention to cool the oil filled in the chamber 28 of the plunger pump 26, in detail, the temperature of the oil rises when using a high pressure washer for a long time To circulate and cool the oil with water supplied from the condenser tank 20 in order to prevent the plunger pump 26 from being damaged. A detailed configuration of the oil cooler 22 will be described later with reference to FIGS. 3 and 4. It will be easily understood by.

3 and 4 is a view showing a detailed configuration of the oil cooler according to the present invention, one side end (the left end in Figure 3) of the oil cooler 22 is connected to the condenser tank 20 and the inlet pipe (21a) And the other end (right end in Figure 3) is connected to the plunger pump 26 and the discharge pipe (21b). In addition, two pipes are installed on both sides of the bottom surface of the oil cooler 22. Preferably, an oil supply pipe 23a connected to the gear pump 24 is installed at the left end, and the chamber 28 is provided at the other end. Oil discharge pipe (23b) connected with the is installed.

In the oil cooler 22 described above, a plurality of pipes 44 are installed while maintaining a predetermined interval, as shown in FIG. 4, and water flows along the pipes 44. That is, the water supplied from the condenser tank 20 is supplied to the pipe 44 of the oil cooler 22 through the inlet pipe 21a shown in FIG. 3 and then the plunger pump 26 through the discharge pipe 21b. Is supplied. At this time, the pressure of the water is about 4kg / ㎠.

Meanwhile, cooling fins 46 are attached to the outer circumferential surface of the pipe 44, and the cooling fins 46 cool the oil in the chamber 28 together with the water flowing along the pipe 44 described above. That is, the oil filled in the chamber 28 of the plunger pump 26 described above is supplied into the oil cooler 22, and preferably the oil is supplied through the oil supply pipe 23a shown in FIG. 3. It flows into the space portion between the inner circumferential surface of the oil cooler 22 and each of the pipes 44, flows in the right direction (in FIG. 3), cools, and then flows into the chamber 28 through the oil discharge pipe 23b. At this time, the oil filled in the chamber 28 is introduced into the oil cooler 22 by the driving force of the gear pump 24.

The plunger pump 26 shown in FIG. 2 described above refers to water that has passed through the oil cooler 22 (preferably water having a pressure of 4 kg / cm 2) as high pressure water (hereinafter referred to as “high pressure water”). And a chamber 28 is installed in the plunger pump 26 and filled with oil. At this time, the pressure of the high pressure water is about 200 ~ 500kg / ㎠. Meanwhile, since the above-described configuration and operation of the plunger pump 26 and the chamber 28 are well known techniques, a detailed description thereof will be omitted, and additionally, the plunger pump is disclosed in Korean Patent Laid-Open Publication No. 2001-67769. No. (valve structure of the plunger pump) and publication No. 2001-105005 (plunger pump) are described in detail.

The safety valve 32 is a valve which operates when the pressure of the high pressure water generated by the plunger pump 26 becomes higher than a set pressure to block the flow of the high pressure water, and an accumulator 34. Is a device for smoothing the flow of water by suppressing the vibration of the high pressure water.

The unloading valve 36 allows the user to adjust the pressure of the high pressure water, and shuts off the high pressure water flowing into the spray gun 38 when the spray gun 38 is not in use. It serves to send the condenser tank 20, it is also commonly referred to as a by-pass valve (by-pass valve). At this time, when the user adjusts the unload valve 36 to a pressure of 500 kg / cm 2, the plunger pump 26 operates at a pressure of 500 kg / cm 2.

Finally, reference numeral 30 shown in Fig. 2 is a pressure gauge, 38 is a normal pressure gun, 40 is a gun for Lance, and 42 is a pressure nozzle.

On the other hand, the high pressure washer of the present invention performing the configuration and operation as described above, when the main switch is turned off (off), the aforementioned plunger pump 26 is stopped but the gear pump 24 continues for a certain time Drive to cool the oil heated to a high temperature.

As described above, the present invention circulates and cools the oil filled in the chamber of the plunger pump using an oil cooler, thereby preventing the plunger pump from being damaged even when using the high pressure cleaner for a long time. In addition, there is a synergistic effect that prevents the evaporation of the oil and the temperature of the oil to be raised, thereby preventing safety accidents.

Claims (3)

A plunger pump 26 for generating a pressure of water supplied from the outside at a high pressure, and a chamber 28 installed in the plunger pump 26 is filled with oil for the smooth operation of the pump 26 In the high pressure washer, An oil cooler (22) connected to the plunger pump (26) to cool the oil filled in the chamber (28); It is installed between the chamber 28 and the oil cooler 22, and comprises a gear pump 24 for introducing the oil in the chamber 28 into the oil cooler 22 for forced circulation. High pressure washer with oil cooling function. According to claim 1, wherein the oil cooler 22 is provided with at least one or more pipes 44 through which the water flows, the cooling fins 46 on the outer circumferential surface of the pipe 44 while maintaining a constant interval High pressure washer with oil cooling function characterized in that attached. The oil cooling function of claim 2, wherein the oil is introduced into the space between the inner circumferential surface of the oil cooler 22 and the pipe 44 by the gear pump 24 to circulate cooling. High pressure washer.