KR20180061100A - Method for producing evaporative emission of hydrocarbons and device using the same - Google Patents

Abstract

According to the present invention, disclosed is a hydrocarbon evaporation gas generation device including an evaporator including an oil reservoir tank storing hydrocarbon supplied from a hydrocarbon tank and a bubbler generating bubbles in the hydrocarbon in the oil reservoir tank; and a system controller controlling the amount of the hydrocarbon in the oil reservoir tank, controlling the temperature in the evaporator and/or the temperature of the hydrocarbon by using a heat source and a cold source, and controlling the amount of gas flowing into the bubbler, in which the evaporator discharges the evaporation gas generated from the hydrocarbon through an evaporation gas discharge port to a canister along with the gas generated by the bubbler in accordance with the control performed by the system controller. According to the present invention, hydrocarbon evaporation gas generation can be stably performed at a constant speed.

Description

TECHNICAL FIELD The present invention relates to a method for generating a hydrocarbon vapor gas and a device using the same. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a method for generating hydrocarbon vapor and a device using the same, and more particularly, to a method for stably generating hydrocarbon vapor at a constant rate and a device using the same.

Hydrocarbons refer to organic compounds composed only of carbon (C) and hydrogen (H). The simplest hydrocarbons are methane (CH ₄ ) with one carbon and four hydrogen atoms. Typical hydrocarbons include petroleum and natural gas. Gasoline, paraffin, jet fuel, lubricant, and paraffin wax are all hydrocarbon mixtures. Hydrocarbons include alkanes, alkenes, alkynes, and the like, and may be divided into aliphatic hydrocarbons, aliphatic cyclic hydrocarbons, and aromatic hydrocarbons. Hydrocarbons are widely used in many fields of real life.

Particularly, the gasoline evaporation gas discharged from an automobile fuel tank corresponds to a mixture of hydrocarbons. Particularly, gasoline is produced by gathering a compound having a molecular structure including 4 carbon atoms to 12 carbon atoms.

The method of generating the hydrocarbon vapor gas and the generating apparatus using the method can be used for various purposes in connection with an apparatus for inspecting automotive electrical components.

However, according to the conventional technology, controlling the temperature of the hydrocarbon in the method of generating the hydrocarbon vapor gas is limited to the method of controlling the temperature by heating the incoming fuel. The problem with the prior art, therefore, is that it does not precisely control the yield over time of the evaporated gas as it regulates the amount of evaporated gas by heating the fuel.

1 is a schematic structural view of a fuel evaporative gas generator according to an embodiment of the present invention.

Referring to FIG. 1, according to a conventional technique, a fuel evaporative gas generator includes an evaporator, and the evaporator includes a level controller, a temperature sensor, and a fuel heater.

The fuel heater receives fuel from the fuel tank and heats the fuel for generation of the evaporative gas. The level regulator regulates the maximum level of fuel in the evaporator. The fuel evaporative gas generator measures the temperature of the fuel in the evaporator using a temperature sensor and heats the fuel using a heater to raise the temperature of the fuel. Here, the level regulator adjusts the maximum level of fuel but does not consider the minimum level. Thus, the minimum level of fuel can in principle go down to the bottom of the tank and the rate of temperature change of the fuel is increased due to the level difference between the maximum level and the minimum level.

According to the related art, there are many problems in controlling the temperature of the fuel by using only the fuel heater and controlling the temperature of the fuel which changes abruptly due to the level difference.

The method and apparatus for generating hydrocarbon vapor according to an embodiment of the present invention are characterized in that the evaporation action of hydrocarbon is promoted by various means and the amount of hydrocarbon influx, temperature and amount of gas are precisely controlled. In view of the above, a method for generating hydrocarbon vapor gas according to an embodiment of the present invention and an apparatus using the same are disclosed in order to solve the problems of the prior art, which are distinguished from the conventional techniques.

Korean Patent Publication No. 10-2014-0132368 (Nov. 17, 2014).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for generating hydrocarbon vapor gas at a constant rate and stably and an apparatus using the same.

A further object of the present invention is to provide a method for generating hydrocarbon vapor gas capable of precisely controlling the amount of generated hydrocarbon gas by controlling the temperature and the gas amount, and an apparatus using the same.

An apparatus for generating hydrocarbon vapor according to an embodiment of the present invention includes: an evaporator including a low oil tank for receiving hydrocarbon from a hydrocarbon tank and a bubbler for generating bubbles in hydrocarbon in the low oil tank; Controlling the amount of hydrocarbon trapped in the low oil tank, controlling the temperature in the evaporator and / or the temperature of the hydrocarbon using a heat source and a cold source, and controlling the temperature of the gas flowing into the bubbler Wherein the evaporator discharges the evaporation gas generated from the hydrocarbons together with the gas generated by the bubbler through the evaporation gas outlet in accordance with the control of the system controller .

The hydrocarbon vaporizing gas generator may further include a first valve for regulating the amount of hydrocarbon supplied from the hydrocarbon tank and a second valve for regulating the amount of hydrocarbon discharged from the low oil tank, And the amount of hydrocarbons in the evaporator is controlled by controlling the opening and closing of the first valve and the second valve.

Here, the low oil tank further includes a temperature sensor for measuring the temperature of the evaporation gas and / or the hydrocarbon in the low oil tank.

Here, the evaporator may include a hot water heat exchanger corresponding to the heat source that receives hot water from the hot water supply unit and exchanges heat of the hot water with hydrocarbons; And a cold water heat exchanger corresponding to the cold source for receiving the cold water from the cold water supply unit and replacing the heat of the hydrocarbon with cold water.

The hydrocarbon vaporizing gas generator includes a third valve for regulating the amount of hot water supplied from the hot water supply unit; And a fourth valve for controlling the amount of cold water supplied from the cold water supply unit, wherein the system controller controls the temperature of the hydrocarbon in the evaporator using the temperature sensor by controlling the opening and closing of the third and fourth valves, .

Here, the evaporator may further include a hydrocarbon heater that heats the hydrocarbon supplied from the hydrocarbon tank, and the system controller controls the temperature of the hydrocarbon supplied from the hydrocarbon tank using the temperature sensor by controlling the driving of the hydrocarbon heater .

Here, the evaporator may further include a level switch for reading a hydrocarbon level of the storage tank, and the system controller may control the amount of hydrocarbon between predetermined levels using the level switch do.

Here, the hydrocarbon vaporizing gas generator further includes a gas flow rate controller for controlling the amount of the gas, and the system controller controls the amount of gas flowing into the bubbler by controlling the opening and closing of the gas flow rate controller .

Here, the system controller controls the amount of gas flowing into the bubbler in proportion to the weight of the evaporation gas discharged through the evaporation gas outlet.

Here, the weight of the evaporation gas is calculated from the weight of the evaporation gas discharged through the evaporation gas outlet.

The hydrocarbon evaporation gas generator includes a valve for regulating the amount of the hydrocarbon evaporation gas collected in the discharged hydrocarbon evaporation gas; And / or a temperature regulating device for regulating the temperature of the discharged hydrocarbon evaporating gas, wherein the system controller controls the yield of the hydrocarbon evaporating gas by controlling the opening and closing of the valve; And / or to control condensation of the hydrocarbon vapor by controlling the temperature control device.

Here, the hydrocarbon vaporizing gas generator may include: a valve for regulating the amount of the hydrocarbon vaporized gas recovered in accordance with the amount of the captured hydrocarbon vapor gas; Further comprising a cooling device for condensing the recovered hydrocarbon vapor gas, wherein the system controller complementarily controls the valve for regulating the collection and the valve for regulating the recovery.

A method of generating hydrocarbon vapor according to an embodiment of the present invention includes the steps of: receiving a hydrocarbon, storing the hydrocarbon, and generating an evaporation gas in the hydrocarbon; Collecting the evaporated gas outside the low oil tank; And compensating for the amount of hydrocarbons that are reduced due to the generation of the evaporation gas, wherein the step of controlling the temperature of the hydrocarbons and the amount of hydrocarbons is controlled for each step.

Here, the supplementing of the amount of the hydrocarbon may include calculating a weight of the collected evaporated gas; And controlling the supply amount of the hydrocarbon using the weight.

Here, the step of measuring the weight of the evaporation gas is characterized by using a change in weight of the evaporation gas collecting apparatus.

Here, the step of controlling the temperature of the hydrocarbon and the amount of the hydrocarbon may be performed by controlling the temperature of the hydrocarbon using a heat source and a cold source.

Here, the step of controlling the temperature of the hydrocarbons and the amount of hydrocarbons may include heating the supplied hydrocarbons.

Here, the step of generating the evaporation gas in the hydrocarbon may further include the steps of generating gas droplets in the hydrocarbon and / or controlling the flow rate of the gas introduced into the low-temperature tank.

Here, the step of replenishing the amount of hydrocarbon may include discharging the hydrocarbon to the lowest level and supplementing the amount of new hydrocarbon to the maximum level when the amount of hydrocarbon gas evaporated gas acquisition per hour does not reach the limit amount And further comprising:

A non-transitory computer readable storage medium according to one embodiment of the present invention is a method for generating an evaporative gas in a hydrocarbon, comprising the steps of: receiving a hydrocarbon, storing the hydrocarbon, and generating an evaporative gas in the hydrocarbon; Collecting the evaporated gas outside the low oil tank; And compensating for the amount of hydrocarbons that are reduced due to the evolution of the evaporative gas, wherein controlling the temperature of the hydrocarbons and the amount of hydrocarbons at each of the steps comprises: .

According to the present invention, it is possible to stably generate the hydrocarbon vapor gas at a constant rate.

Further, the generation amount of the hydrocarbon evaporation gas can be precisely controlled.

1 is a schematic configuration diagram of a fuel evaporative gas generator according to a conventional technique.
2 is a schematic block diagram of an apparatus for generating hydrocarbon vapor according to an embodiment of the present invention.
FIG. 3 is a block diagram of an apparatus extending from the outlet in FIG. 2; FIG.
4 is a flowchart of a method for generating hydrocarbon vapor according to an embodiment of the present invention.

Hereinafter, preferred embodiments of a hydrocarbon vaporizing gas generating apparatus and a hydrocarbon vaporizing gas generating method will be described in detail with reference to the accompanying drawings.

Like reference symbols in the drawings denote like elements. It should also be understood that the specific structural and functional descriptions for one embodiment of the present invention are presented for purposes of describing an embodiment of the present invention only and that, unless otherwise defined, all terms used herein, including technical or scientific terms, The terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as ideal or overly formal in the sense of the art unless explicitly defined herein .

In an embodiment of the present invention, hydrocarbons include various compounds and mixtures thereof composed of carbon and hydrogen. And the hydrocarbon mixture comprises gasoline consisting of hydrocarbons having from 4 to 12 carbon atoms (C4-C12) per molecule. And the vapor of the hydrocarbon and / or gasoline may be referred to as an oil mist. In addition, the vaporized gas of the hydrocarbon and / or gasoline may comprise gas.

2 is a schematic block diagram of an apparatus for generating hydrocarbon vapor according to an embodiment of the present invention.

Referring to FIG. 2, the hydrocarbon vaporizing gas generator 100 includes a system controller 110 and an evaporator 120.

The controller 110 controls the operation of various equipments included in the hydrocarbon vaporizing gas generator 100, in particular, various equipments included in the evaporator 120. That is, the controller 110 controls the amount of hydrocarbon trapped by the low oil tank 127 and controls the temperature in the evaporator 120 and / or the temperature of the hydrocarbon using a heat source and a cold source And controls the amount of gas flowing into the bubbler 124. A detailed description of the control operation of the controller 110 will be given later.

The evaporator 120 includes a low oil tank 127 for storing hydrocarbons so that hydrocarbons are trapped in the low oil tank 127 and evaporated gas is generated from the hydrocarbons and the generated evaporated gas is supplied to the evaporation gas outlet 128 Lt; / RTI > The discharged evaporated gas can be collected in a collecting device, for example a canister. In this regard, the hydrocarbon vaporized gas generator 100 according to an embodiment of the present invention may be connected to a canister and used as a canister tester.

Specifically, under the control of the system controller 110, the evaporator 120 discharges the evaporated gas generated from the hydrocarbons together with the gas generated by the bubbler 124 through the evaporated gas outlet 128.

The evaporator 120 includes components such as a hydrocarbon heater 121, a hot water heat exchanger 122, a cold water heat exchanger 123, a bubbler 124, a level switch 125, a temperature sensor 126, And an oil tank 127. Hereinafter, each component will be briefly described.

The hydrocarbon heater 121 heats the hydrocarbon supplied from the hydrocarbon tank 200. Specifically, the hydrocarbon heater 121 applies heat to the supplied hydrocarbon to increase the temperature of the hydrocarbon to a predetermined temperature according to a predetermined set value. For example, when the temperature of the hydrocarbon supplied from the hydrocarbon tank 200 at room temperature is 18 degrees Celsius, the hydrocarbon heater 121 may heat the hydrocarbon tank 121 directly or indirectly through hot water, The hydrocarbons supplied at the same temperature as the hydrocarbon are heated at 40 ° C at 18 ° C.

The hot water heat exchanger (122) and the cold water heat exchanger (123) regulate the temperature of the hydrocarbons in the low oil tank (127). The hot water heat exchanger 122 increases the temperature of the hydrocarbons in the low oil tank 127 and the cold water heat exchanger 123 is connected to the low oil tank 127 Lt; / RTI > The hot water heat exchanger 122 and the cold water heat exchanger 123 can gradually change the temperature of the hydrocarbons in the low oil tank 127 by using the heat source and the cool source included in each of them.

The bubbler 124 generates bubbles, that is, bubbles, in the hydrocarbons in the low oil tank 127. The bubbler 124 is connected to a gas flow controller. The system controller 110 controls the gas flow rate regulator to regulate the amount of gas supplied to the bubbler 127. Here, various kinds of gases including air can be supplied to the bubbler 127.

The bubbler 124 generates gas bubbles in the hydrocarbon liquid using the gas supplied through the gas flow rate regulator. The generated gas bubbles, for example air, oxygen or nitrogen bubbles, serve to circulate the hydrocarbons in the low- The gas bubbles due to the gas supplied into the hydrocarbon in the low oil tank 127 float over the oil surface and serve to promote the evaporation of the hydrocarbon evaporation gas. The gas bubbles rising on the oil surface are blown out, and the gas is discharged through the discharge port 128 to the gas discharge port on the recovery path.

The system controller 100 controls the amount of gas flowing into the bubbler 124 in proportion to the weight or volume of the evaporation gas discharged through the evaporation gas outlet 128.

Here, the weight of the hydrocarbon evaporating gas is measured based on the weight change of the collecting apparatus, and the volume of the hydrocarbon evaporating gas is calculated using the weight of the hydrocarbon evaporating gas thus measured.

The volume of the evaporation gas is calculated from the molar weight of the evaporated gas discharged through the evaporation gas outlet 128, that is, the weight / mol value.

The level switch 125 reads or measures the oil level, or level, of the hydrocarbon in the low oil tank 127. Specifically, when the level is set in advance, for example, when the first level LS1 and the second level LS2 lower than this are previously set, the level switch 125 measures the level of the hydrocarbon in the low oil tank 127 And informs the system controller 110 of the fact that the measured level has reached the preset first level or the second level. The system controller 110 then controls the amount of hydrocarbons flowing out of the first valve V1 and the lower oil tank 127 located between the hydrocarbon tank 200 and the hydrocarbon heater 121 so that the amount of hydrocarbon does not change at the corresponding level, And controls the opening and closing of the second valve.

The temperature sensor 126 measures the temperature of the hydrocarbon and / or hydrocarbon vapor in the low oil tank 127 and transfers the measured value to the system controller 110. Then, the system controller 110 controls the hydrocarbon heater 121, the hot water heat exchanger 122 and the cold water heat exchanger 123 using the temperature measurement value, specifically, the first valve V1 3 valve (V3) and the fourth valve (V4), respectively.

The low oil tank 127 receives hydrocarbons from the hydrocarbon tank 200 to store hydrocarbons. The low oil tank 127 includes an inlet and an outlet through which hydrocarbon is supplied. A first valve (V1) is provided on the inlet side and a second valve (V2) is provided on the outlet side. Both the first valve and the second valve are controlled to be opened and closed by the system controller 110. Hydrocarbons flowing out through the outlet can be fed back to a tank for storing hydrocarbons separately.

Similarly, hot water or cold water supplied to the hot water heat exchanger 122 and the cold water heat exchanger 123 can be fed back to the respective supply units 300 and 400 after passing through the exchanges 122 and 123.

As described above, the system controller 110 controls the amount of gas introduced through the gas flow rate regulator 101, and based on the temperature value sensed by the temperature sensor 126, the respective valves V1, The amount and temperature of the hydrocarbons can be controlled through the hydrocarbon heater 121, the low oil tank 127, the hot water heat exchanger 122, and the cold water heat exchanger 123 by controlling the amount of the hydrocarbons V2, V3, V4, V5, V6, have.

Hereinafter, the hydrocarbon flow rate control, particularly the level control, of the system controller 100 will be described.

Referring again to FIG. 2, a level switch 125 provided in the evaporator 120 is depicted.

The system controller 110 controls the first valve V1 to adjust the hydrocarbon injected into the low oil tank 127 based on the speed and / or the amount of the evaporated gas discharged through the evaporation gas outlet 128, And controls the second valve V2 for controlling the amount of hydrocarbon discharged from the second valve 127.

Further, the system controller 110 judges the timing of controlling the first valve and the second valve by using the level switch 125. Specifically, the level switch 125 reads the oil level of the hydrocarbon in the low oil tank 127 and transmits the position information of the oil level to the system controller 110. The system controller 110 can control the amount of hydrocarbon flowing into or out of the low oil tank 127 using the first valve and the second valve based on the received position information of the oil surface.

The level control of the oil level performed by the system controller 110 is based on the level of the incoming and / or outgoing hydrocarbons based on the level of the hydrocarbon detected at the first level, the first level, or any level between the first level and the second level Lt; / RTI >

FIG. 3 is a block diagram of an apparatus extending from the outlet in FIG. 2; FIG.

Referring to FIG. 3, the hydrocarbon vaporized gas generator 100 includes: a valve for controlling the flow rate of the discharged hydrocarbon vapor; And / or a temperature regulating device for regulating the temperature of the discharged hydrocarbon vapor gas, wherein the system controller can control the yield of the evaporated gas by controlling the opening and closing of the valve.

One of the valves is provided as a fifth valve in the path where the hydrocarbon vaporized gas is condensed and fed back to the low oil tank 127 and the other is provided as a sixth valve in a path in which the hydrocarbon vapor gas is captured by the canister or the like . The condenser 129 installed in the feedback path condenses the hydrocarbon vaporized gas. And the gas contained in the hydrocarbon vapor is discharged to the atmosphere.

The opening and closing of the fifth valve and the sixth valve may be complementary to each other. That is, when the sixth valve is closed to reduce the yield of the captured hydrocarbon vapor gas, the fifth valve is opened to condense and feed back the hydrocarbon vapor gas. Conversely, when the fifth valve is changed to the closed state, the feedback of the hydrocarbon evaporation gas is stopped, and the hydrocarbon vapor gas passing through the discharge port is collected along the trapping path, thereby increasing the yield.

As the temperature control device, a hot water heat exchanger 131 and a cold water heat exchanger 132 may be used. The cold water heat exchanger 132 can control the temperature of the hydrocarbon vapor gas collected in the canister or the like to be lower than the limit temperature to prevent the canister from deteriorating. And the hot water heat exchanger 122 may raise the temperature of the evaporating gas to the limit temperature at which no deterioration occurs.

Referring to FIG. 3, piping for collecting the evaporated gas at the discharge port and piping for feedback are depicted. The amount of the evaporated gas collected here is controlled by the sixth valve in accordance with the control command of the system controller 110, and the amount of the evaporated gas fed back is controlled by the fifth valve.

The condenser 129 condenses the evaporated gas to be discharged into the atmosphere and feeds it back to the low oil tank 127.

It is also preferred that the piping on the collection path, including the outlet 128, is made of viton or teflon to prevent condensation of the evaporation gas.

The addition of a device extending from such an outlet allows the hydrocarbon vapor to be trapped in accordance with embodiments of the present invention to be controlled within the low oil tank 127 by controlling the hydrocarbon flow rate, The temperature control of the collection state and the collection amount control are possible.

4 is a flowchart of a method for generating hydrocarbon vapor according to an embodiment of the present invention.

Referring to FIG. 4, the hydrocarbon evaporation gas generating method S100 includes steps S110 to S131. Each step is performed by the hydrocarbon vaporizing gas generating apparatus 100 according to the embodiment of the present invention. In particular, each step is performed by the components of the hydrocarbon vaporized gas generating apparatus 100 under the control of the system controller 110.

Basically, a low oil tank 127, in which hydrocarbons can be trapped, is prepared. The hydrocarbon tank 200 supplies hydrocarbon, for example, gasoline, to the low oil tank 127.

First, hydrocarbon is supplied in accordance with a method for generating hydrocarbon vapor gas by the hydrocarbon vaporizing gas generator 100, and the hydrocarbon is stored, and a vaporized gas is generated in the hydrocarbon (S110).

Next, the generated evaporated gas is collected in a space where hydrocarbons are stored, that is, outside the low oil tank 127 (S120). Here, the hydrocarbon vaporized gas can be collected through a canister.

Next, the amount of hydrocarbons reduced by the generation of the evaporation gas is supplemented (S130). The amount of hydrocarbons in the low oil tank 127 is gradually reduced due to the discharge and collection of the evaporated gas and the oil level of the low oil tank 127 can be gradually lowered. Thus, the hydrocarbon from the hydrocarbon tank is replenished into the low oil tank 127 via the first valve control.

Here, the steps S110 to S130 include steps S111, S121, and S131 for controlling the temperature of the hydrocarbon and the amount of the hydrocarbon. That is, the system controller 110 performs a control operation for controlling the temperature and the amount of the hydrocarbon.

In particular, in step S110, the temperature and the amount of hydrocarbon in the supply, storage, and evaporation steps of the hydrocarbon may be controlled by the system controller 110 (S111). The feed rate of the hydrocarbons can be controlled via a valve and the temperature of the hydrocarbons can be regulated through a temperature regulator, for example a hot water and cold water heat exchanger. Further, the hydrocarbon can be heated and supplied to the hydrocarbon in the low oil tank 127 by the heater 121 (S112-1).

In step S120, the temperature and the amount of the hydrocarbon may be controlled by the system controller 110 (S121). The amount to be trapped in the discharged hydrocarbon vapor is controlled, and the remaining amount can be fed back into the low oil tank. In addition, the temperature of the captured hydrocarbons must be controlled. This is a necessary process for preventing deterioration of the collecting device, for example, the canister.

The step of replenishing the amount of hydrocarbon (S130) may include the steps of (S132-1) measuring the weight of the collected evaporated gas; And controlling the flow rate of the gas flowing into the low oil tank in proportion to the weight (S132-2).

Here, the step (S132) of measuring the weight of the evaporated gas is characterized by using a weight per mole of the evaporated gas.

Specifically, the weight of the evaporated gas collected in the canister is measured using a balance. Here, the weight refers to the weight per mole and is converted to a volume. The gas is injected into the bubbler 124 through the gas flow rate controller at a ratio of 1: 1 in proportion to the amount of the converted evaporated gas, and the injected gas is injected into the gas supply tank 127 in the shape of a gas drop do.

The step (S111) of controlling the temperature of the hydrocarbon and the amount of the hydrocarbon is characterized by controlling the temperature of the hydrocarbon using a heat source and a cold source. Here, hot water is used as a heat source, and cold water can be used as a cold source. Heat exchange between water and hydrocarbons can be achieved by the above-mentioned water bath method.

In particular, the step (S111) of controlling the temperature of the hydrocarbon and the amount of the hydrocarbon includes a step (S112-1) of heating the supplied hydrocarbon. As described above, the temperature of the hydrocarbon, which is manually or automatically introduced into the low oil tank 127 through the hydrocarbon heater 121, is controlled to match the temperature of the hydrocarbon in the low oil tank 127.

The step (S110) of generating the evaporation gas in the hydrocarbon further includes a step (S112-2) of generating gas droplets in the hydrocarbon. As described above, according to the operation of the bubbler 124, the mixing of the hydrocarbons is uniform and the evaporation on the surface can be promoted (S132).

In addition, the step of replenishing the amount of hydrocarbon (S130) may include discharging the hydrocarbon to the lowest level (S134) if the amount of hydrocarbon gas vapor deposition per hour does not reach the limit of the amount obtained at a predetermined temperature range (S135) of replenishing the amount of hydrocarbons from the current level to the maximum level.

Specifically, the first level (LS1) and the second level (LS2) of the hydrocarbon contained in the low oil tank 127 that can be read by the level switch 125 are set in advance. The first level is higher than the second level. And the height difference between the first level and the second level is such that the volume due to the level difference is less than 50% of the volume of the entire bottom tank 127, preferably between 5% and 10% . This is to minimize the temperature change of the carbon monoxide in the low oil tank 17 due to the newly introduced hydrocarbon.

When the acquisition amount of 0.8 g of the hydrocarbon vapor gas per minute in the limited acquisition amount is preset,

Starting at the first level, the oil level gradually lowers and evaporation gas is generated and collected. By measuring the weight of the canister, the weight of the captured hydrocarbon vapor is measured. If the appropriate acquisition amount is 1 g per minute, this is an amount required by the Euro 6 standard. If the measurement result obtained is less than 1 g per minute, the system controller 110 can increase the measured amount through temperature control. Nevertheless, in the case where the acquired amount does not exceed 0.8 g per minute corresponding to the limited acquisition amount in the preset temperature range, even if the level of the hydrocarbon does not reach the second level, The hydrocarbon is replenished up to the first level, or the hydrocarbon is discharged to the second level, and then the hydrocarbon is replenished to the first level. At the first level, evaporation and trapping of the hydrocarbon evaporation gas are again performed. There are various reasons why the amount of the hydrocarbon vapor gas to be obtained is less than the limit acquisition amount, but the quality of the hydrocarbon introduced may be the cause.

In general, the system controller adjusts the amount of the obtained gas within a certain range through temperature control. When the amount of the obtained gas does not reach the limit acquisition amount within a predetermined temperature range, the hydrocarbon is directly replenished Control valves to compensate.

For example, when the height of the reservoir is 85 mm, the height of the first level may be 40 to 45 mm and the height of the second level may be 40 to 35 mm. It is not limited to the above example. This value indicates that the minimum space required for evaporation of the hydrocarbons in the low oil tank 127 is required.

As described above, the hydrocarbon vaporized gas generating method performed by the hydrocarbon vaporized gas generating apparatus 100 according to an embodiment of the present invention is a method for checking the quality of a vehicle canister, Methods and testers.

The hydrocarbon vaporizing gas generating method S100 according to the embodiment described above with reference to the drawings may also be embodied in the form of a recording medium including an instruction set executable by a computer such as a program module executed by a computer have. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

As described above, according to the embodiment of the present invention, it is possible to stably generate the hydrocarbon vapor gas at a constant rate.

Further, the generation amount of the hydrocarbon evaporation gas can be precisely controlled.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Hydrocarbon vapor gas generator
110: System controller
120: Evaporator
121: hydrocarbon heater
122: Hot water heat exchanger
123: cold water heat exchanger
124: Bubbler
125: Level switch
126: Temperature sensor
127: Low oil tank
128: Outlet
129: condenser
200: Hydrocarbon tank
300: Hot water supply
400: cold water supply part

Claims (20)

An evaporator including a low oil tank for receiving and storing hydrocarbon from the hydrocarbon tank and a bubbler for generating bubbles in the hydrocarbon in the low oil tank;
Controlling the amount of hydrocarbon trapped in the low oil tank, controlling the temperature in the evaporator and / or the temperature of the hydrocarbon using a heat source and a cold source, and controlling the temperature of the gas flowing into the bubbler And a system controller,
Wherein the evaporator discharges the evaporation gas generated from the hydrocarbons together with the gas generated by the bubbler through the evaporation gas outlet under the control of the system controller. The method according to claim 1,
The hydrocarbon vaporizing gas generator comprises:
A first valve for regulating the amount of hydrocarbon supplied from the hydrocarbon tank, and a second valve for regulating the amount of hydrocarbon discharged from the low-
The system controller includes:
And controls the amount of hydrocarbons in the evaporator by controlling the opening and closing of the first valve and / or the second valve. The method according to claim 1,
The low-
Further comprising a temperature sensor for measuring the temperature of the evaporated gas and / or hydrocarbon in the low oil tank. The method of claim 3,
Wherein the evaporator comprises:
A hot water heat exchanger corresponding to the heat source that receives hot water from a hot water supply unit and exchanges heat of hot water with hydrocarbons; And
Further comprising a cold water heat exchanger corresponding to the cold source for receiving the cold water from the cold water supply unit and replacing the heat of the hydrocarbon with the cold water. The method of claim 4,
The hydrocarbon vaporizing gas generator comprises:
A third valve for adjusting the amount of hot water supplied from the hot water supply unit; And
Further comprising a fourth valve for regulating the amount of cold water supplied from the cold water supply,
The system controller includes:
Wherein the temperature of the hydrocarbon in the evaporator is controlled using a temperature sensor by controlling the opening and closing of the third valve and the fourth valve. The method according to claim 1,
Wherein the evaporator comprises:
Further comprising a hydrocarbon heater for raising the temperature of the hydrocarbon supplied from the hydrocarbon tank to be equal to the temperature of the hydrocarbon in the low oil tank. The method according to claim 1,
Wherein the evaporator comprises:
Further comprising a level switch for reading a hydrocarbon level of the storage tank,
The system controller includes:
And the amount of hydrocarbons is controlled between predetermined levels by using the level switch. The method according to claim 1,
The hydrocarbon vaporizing gas generator comprises:
Further comprising a gas flow rate controller for regulating the amount of gas,
The system controller includes:
And controls the amount of gas flowing into the bubbler by controlling the opening and closing of the gas flow rate regulator. The method according to claim 1,
The system controller includes:
And controls the amount of gas introduced into the bubbler in proportion to the weight of the collected evaporated gas discharged through the evaporated gas outlet. The method of claim 9,
The weight of the evaporation gas is,
Wherein the measurement is performed using a change in weight of the evaporative gas collecting apparatus discharged through the evaporating gas outlet. The method according to claim 1,
The hydrocarbon vaporizing gas generator comprises:
A valve for regulating the amount of the hydrocarbon vaporized gas captured in the discharged hydrocarbon vapor gas; And / or
Further comprising a temperature regulating device for regulating the temperature of the discharged hydrocarbon vapor gas,
The system controller includes:
Controlling the rate of yield of the hydrocarbon vapor by controlling the opening and closing of the valve; And / or
Wherein the temperature regulating device is controlled to prevent condensation of the hydrocarbon evaporation gas. The method of claim 11,
The hydrocarbon vaporizing gas generator comprises:
A valve for regulating the amount of recovered hydrocarbon vapor gas in accordance with the amount of the collected hydrocarbon vapor gas;
Further comprising a cooling device for condensing the recovered hydrocarbon vapor gas,
The system controller includes:
Wherein the valve for regulating the collection and the valve for regulating the recovery are complementarily controlled with respect to each other. A method for generating an evaporative gas in a hydrocarbon,
Receiving a hydrocarbon, storing the hydrocarbon, and generating an evaporative gas in the hydrocarbon;
Collecting the evaporated gas outside the low oil tank; And
Supplementing the amount of hydrocarbons that is reduced due to evaporative gas evolution,
Further comprising the step of controlling the temperature of the hydrocarbons and the amount of hydrocarbons in each of said steps. 14. The method of claim 13,
Wherein supplementing the amount of hydrocarbon comprises:
Measuring the weight of the collected evaporated gas; And
And controlling the feed rate of the hydrocarbon using said weight. ≪ RTI ID = 0.0 > 11. < / RTI > 15. The method of claim 14,
Wherein measuring the weight of the evaporated gas comprises:
Wherein the change in weight of the evaporation gas collecting device is used. 14. The method of claim 13,
Wherein controlling the temperature of the hydrocarbon and the amount of hydrocarbon comprises:
Wherein the temperature of the hydrocarbon is controlled using a heat source and a cold source. 14. The method of claim 13,
Wherein controlling the temperature of the hydrocarbon and the amount of hydrocarbon comprises:
And heating the supplied hydrocarbons. ≪ RTI ID = 0.0 > 11. < / RTI > 14. The method of claim 13,
Wherein the step of generating an evaporation gas in the hydrocarbon comprises:
Generating a gas droplet in the hydrocarbon and /
Further comprising the step of controlling the flow rate of the gas entering the low oil tank. 14. The method of claim 13,
Wherein supplementing the amount of hydrocarbon comprises:
If the amount of the hydrocarbon vapor gas obtained per hour does not reach the limit acquisition amount in the preset temperature range,
Further comprising discharging the hydrocarbon to a second level and replenishing the amount of hydrocarbon to a first level or replenishing the amount of hydrocarbon to a first level at the current level. A method for generating an evaporative gas in a hydrocarbon,
Receiving a hydrocarbon, storing the hydrocarbon, and generating an evaporative gas in the hydrocarbon;
Collecting the evaporated gas outside the low oil tank; And
Supplementing the amount of hydrocarbons that is reduced due to evaporative gas evolution,
Further comprising the steps of: controlling the temperature of the hydrocarbon and the amount of hydrocarbon in each of the steps. ≪ Desc / Clms Page number 19 >

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