KR20110029144A - Gasoline Vapor Recovery Unit - Google Patents

Abstract

Provided is a gasoline vapor recovery device that suppresses the movement of the heat generated from each device accommodated in the frame frame in the vertical direction. In the gasoline vapor recovery device 100 according to the present invention, the condensation tower 2 and the adsorption and desorption tower 4 are positioned above the gasoline vapor pump 1 and the desorption pump 5 in the frame rim 120. It is characterized in that the arrangement.

Description

Gasoline vapor recovery device {GASOLINE VAPOR RECOVERY APPARATUS}

The present invention relates to a gasoline vapor recovery device for recovering vaporized gasoline (hereinafter referred to as gasoline vapor).

In the gasoline tank of an automobile, gasoline liquid is stored in the lower part, and gasoline vapor exists in the upper part in saturation state. When gasoline is refueled to a gasoline tank at a gasoline stand, gasoline vapors existing in the gasoline tank are extracted from the oil inlet and discharged to the atmosphere. In this way, if the gasoline vapor is discharged into the atmosphere as it is, it causes photochemical smog and develops into a problem that adversely affects the human body and the environment. Therefore, a gasoline vapor recovery apparatus has been developed in which gasoline vapors have been recovered, cooled and reused, and various techniques have been proposed so far (see Patent Documents 1 to 3, for example).

The gasoline vapor collected by the gasoline vapor recovery device is a gasoline that conducts inside a condensation tower (petrol vapor condensation vessel) filled with an antifreeze (for example, brine (propylene glycol, etc.), gasoline, or kerosene-based substance). Cooled in the vapor condenser and discharged. If discharged in this state, condensation will be generated around the pipe to be conducted for discharge. In this regard, for example, the temperature of the air discharged to the atmosphere is increased by heat-exchanging the hot gasoline vapor pressurized by the pump and the low-temperature air (air containing some amount of gasoline vapor remaining without being recovered) discharged to the atmosphere. I think how to make it.

Patent Document 1: Patent No. 3843271 (Seconds 7 to 9, FIG. 1)

Patent document 2: Unexamined-Japanese-Patent No. 2005-177563 (5-10 pages, FIG. 1)

Patent Document 3: Japanese Patent Application Laid-Open No. 2006-198604 (pages 4 to 7, page 2)

However, in order to prevent the occurrence of condensation by the above-described method, a heat exchanger must be separately provided, which not only increases the product cost but also increases the restriction of the pipe arrangement. On the other hand, since some amount of gasoline vapor is contained in the air discharged to the atmosphere, blowing of air mixed with combustible components flows into the electric appliance area (hereinafter referred to as non-explosion-proof error area) of the gasoline vapor recovery device, for example. It is not desirable to be. In addition, a small amount of gasoline odor component also remains in the air to be released to the air, and this may scatter, causing discomfort to the user in the gasoline stand.

If the gasoline vapor recovery device is provided with an adsorption and desorption tower in the gasoline vapor recovery device, and the gasoline vapor recovery device is recovered by using an adsorbent (for example, silica gel, zeolite, activated carbon, etc.) filled in the adsorption and desorption tower. When desorbing the gasoline component adsorbed to the gas, air is taken in from the outside of the gasoline vapor recovery device. When the gasoline component released to the air for this desorption purpose is mixed, extra gasoline component is attached to the adsorbent, thereby adsorbing the adsorbent. It will degrade performance.

This invention is made | formed in order to solve the above subjects, and it is a 1st objective to provide the gasoline vapor collection | recovery apparatus which suppresses the movement of the vertical direction of the heat which generate | occur | produces from each apparatus accommodated in a frame edge. In addition to the first object, a second object of the present invention is to provide a gasoline vapor recovery device that prevents condensation on a pipe for releasing air to the air. Moreover, in addition to a 1st objective and a 2nd objective, it is a 3rd objective to provide the gasoline vapor collection | recovery apparatus which suppresses scattering of a gasoline odor component. Further, in addition to the first object, the second object, and the third object, a fourth object of the present invention is to provide a gasoline vapor recovery device in which the air discharged to the atmosphere and the air sucked in for desorption are not mixed. have.

A gasoline vapor recovery device according to the present invention includes a gasoline vapor pump for sucking gasoline vapor discharged from a gasoline tank, a condensation tower for filling a brine therein, and cooling the gasoline vapor sucked by the gasoline vapor pump; An adsorption and desorption tower for adsorbing the gasoline vapor sucked by the gasoline vapor pump with an adsorbent and desorbing the gasoline vapor adsorbed to the adsorbent, a desorption pump for supplying desorption air to the adsorption and desorption tower, and the gasoline vapor And a frame frame accommodating the condensation tower, the adsorption and desorption tower, and the desorption pump therein, and within the frame frame, the condensation tower and the desorption tower are above the gasoline vapor pump and the desorption pump. It is characterized by arranging at a position.

According to the gasoline vapor collection | recovery apparatus which concerns on this invention, the movement of the heat | fever which generate | occur | produces from each apparatus accommodated in a frame edge can be suppressed, and the gasoline vapor collection | recovery efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram which shows the circuit structure of the whole gasoline vapor collection apparatus which concerns on embodiment.
2 is a schematic view showing an example of a layout of a gasoline vapor recovery device.
3 is a schematic view showing another example of the layout of a gasoline vapor recovery device.
4 is a schematic view showing another example of the layout of a gasoline vapor recovery device.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing.

FIG. 1: is a schematic block diagram which shows the circuit structure of the gasoline vapor collection | recovery apparatus 100 whole which concerns on embodiment of this invention. Based on FIG. 1, the circuit structure of the gasoline vapor collection | recovery apparatus 100 is demonstrated. The gasoline vapor recovery device 100 cools and recovers the gasoline vapor sucked in the condensation tower, and provides two adsorption and desorption towers for adsorbing or desorbing the gasoline vapor, thereby providing the functions of the two adsorption and desorption towers. By converting appropriately, the gasoline vapor is recovered (adsorbed) and reused (removed). In addition, including the FIG. 1, in the following drawings, the relationship of the magnitude | size of each structural member may differ from an actual thing.

The gasoline vapor recovery device 100 is installed in a gasoline stand or the like together with a gasoline meter 101 for supplying gasoline to an automobile or the like. And the gasoline vapor collection apparatus 100 collect | recovers and reuses the gasoline vapor discharged | emitted in air | atmosphere from oil supply ports, such as an automobile. The gasoline vapor recovery device 100 is roughly divided into a gasoline vapor condensation circuit A, a refrigerant circuit B, and a brine circuit C. As shown in FIG. Moreover, this gasoline vapor condensation circuit A is comprised from the gasoline vapor adsorption circuit A1 and the gasoline vapor desorption circuit A2.

[Gasoline Vapor Suction Circuit (A1)]

The gasoline vapor adsorption circuit A1 in the case of adsorbing gasoline vapor in the adsorption-and-desorption tower 4a includes the oil supply nozzle 102, the first solenoid valve 22, the gasoline vapor pump 1, and the gasoline condenser ( 24, the gas-liquid separator 3, the 2nd solenoid valve 26a, the adsorption-and-desorption tower 4a, the 3rd solenoid valve 27a, the 1st pressure reduction valve 28, and the discharge port 10 Is connected to the gasoline adsorption piping 29 and the air discharge piping 36 sequentially.

The gasoline vapor adsorption circuit A1 in the case of adsorbing gasoline vapor in the adsorption-and-desorption tower 4b includes the oil supply nozzle 102, the first solenoid valve 22, the gasoline vapor pump 1, and the gasoline condenser ( 24, the gas-liquid separator 3, the 2nd solenoid valve 26b, the adsorption-and-desorption tower 4b, the 3rd solenoid valve 27b, the 1st pressure reduction valve 28, and the discharge port 10 Is sequentially connected to the gasoline adsorption piping 29. That is, by controlling switching of the 2nd solenoid valve 26a and the 2nd solenoid valve 26b, and switching of the 3rd solenoid valve 27a and the 3rd solenoid valve 27b, the adsorption-and-desorption tower 4a or the suction tower The gasoline vapor is adsorbed by one side of the desorption tower 4b.

Therefore, the gasoline vapor collection | recovery apparatus 100 functions each adsorption-and-desorption tower 4a or the adsorption-and-desorption tower 4b as a adsorption-and-desorption tower which adsorb | sucks a gasoline vapor by controlling each said solenoid valve, and the other. It is supposed to function as a desorption tower for desorption of gasoline vapor. In addition, the switching of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b may be performed at predetermined time intervals or in response to the gasoline vapor concentration near the outlet of the one serving as the adsorption tower.

The gasoline meter 101 measures gasoline supplied to an automobile or the like. The oil supply nozzle 102 is inserted into an oil supply port of an automobile or the like when gasoline is refueled from the gasoline meter 101. The oil supply nozzle 102 also has a function as an inlet when sucking gasoline vapor discharged from the oil supply port into the atmosphere. Although the case where one oil supply nozzle 102 is provided here is shown as an example, the number of installation of the oil supply nozzle 102 is not specifically limited. The 1st solenoid valve 22 has a function which prevents the backflow of the gasoline vapor suctioned from the oil supply nozzle 102. FIG. What is necessary is just to provide this 1st solenoid valve 22 according to the installation water of the oil supply nozzle 102. FIG.

The gasoline vapor pump 1 sucks and pressurizes a gasoline vapor from the oil supply nozzle 102. The gasoline condenser 24 is provided in the condensation tower 2, such as a gasoline vapor condensation container, and cools the gasoline vapor which conducts inside, and condenses and liquefies it. Although the case where the gasoline condenser 24 is comprised in a spiral form is shown here as an example, it is not limited to this. The gas-liquid separator 3 separates the liquefied gasoline and the gasoline vapor by capturing the condensed gasoline. 1, the opening / closing valve 30 may be provided in the piping which conducts liquefied gasoline separated by the gas-liquid separator 3 to conduct.

The opening and closing of the second solenoid valve 26a and the second solenoid valve 26b controls whether or not the air including the gasoline vapor that cannot be recovered from the condensation tower 2 is turned on. The adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b have a function as an adsorption tower for adsorbing gasoline vapors, and a desorption tower for desorption of gasoline vapors. Inside the adsorption-and-desorption tower 4a, the adsorber cooler 13a and the adsorption agent 9a which are mentioned later are provided. In the inside of the adsorption-and-desorption tower 4b, the adsorber cooler 13b and the adsorption agent 9b mentioned later are similarly provided.

The adsorbent cooler 13a has a function of cooling the inside of the adsorption-and-desorption tower 4a by the brine 7 filled in the condensation tower 2. The adsorbent cooler 13b also has a function of cooling the inside of the adsorption-and-desorption tower 4b by the brine 7 filled in the condensation tower 2 similarly to the adsorbent cooler 13a. That is, by providing the adsorbent cooler 13a and the adsorbent cooler 13b in the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b, the gasoline vapor is adsorbed with a small amount of the adsorbent 9a and the adsorbent 9b. Is made possible.

The adsorbent 9a and the adsorbent 9b adsorb gasoline vapors from air containing gasoline vapors, and for example, adsorb gasoline vapors contained in air to air containing gasoline vapors of 1 vol% or less on average. It is. As this adsorbent 9a and 9b, silica gel, zeolite, activated carbon, etc. may be used, for example. That is, the gasoline vapor is adsorbed to the adsorbent 9a or the adsorbent 9b of the adsorption and desorption tower 4a or the adsorption and desorption tower 4b, and the gasoline vapor is desorbed from the other adsorbent 9a or the adsorbent 9b. have. Then, the adsorption and desorption are alternately switched to enable continuous operation.

As the opening and closing of the third solenoid valve 27a and the third solenoid valve 27b are controlled, the air after the gasoline vapor is further adsorbed by one of the adsorption-and-desorption tower 4a or the adsorption-and-desorption tower 4b is not conducted. Or it does. The 1st pressure reduction valve 28 pressure-reduces the air after passing through the adsorption-and-desorption tower 4a or the adsorption-and-desorption tower 4b. The outlet 10 is pressure-reduced by the 1st pressure reduction valve 28, and discharges the air which reached | attained through the air discharge piping 36 to air | atmosphere. The gasoline adsorption pipe 29 is a pipe for conducting air containing a gasoline vapor. In addition, each solenoid valve is made to control means (not shown), such as a microcomputer. The air discharge pipe 36 is a pipe that conducts air after adsorption of gasoline vapor in the adsorption-and-desorption tower 4a or the adsorption-and-desorption tower 4b.

[Gasoline Vapor Desorption Circuit (A2)]

The gasoline vapor desorption circuit A2 in the case of detaching gasoline vapor from the adsorption-and-desorption tower 4b includes the inlet port 11, the second pressure reducing valve 31, the fourth solenoid valve 32b, and the adsorption and desorption tower. 4b, the 5th solenoid valve 33b, and the desorption pump 5 are comprised by the gasoline desorption piping 35 in sequence, and are comprised. On the other hand, the gasoline vapor desorption circuit A2 in the case of adsorbing gasoline vapor in the adsorption-and-desorption tower 4b includes the intake port 11, the second pressure reducing valve 31, the fourth solenoid valve 32a, The desorption tower 4a, the fifth solenoid valve 33a, and the desorption pump 5 are sequentially connected to the gasoline desorption pipe 35.

Switching of the 4th solenoid valve 32a and the 4th solenoid valve 32b, and switching of the 5th solenoid valve 33a and the 5th solenoid valve 33b are each solenoid valve in the gasoline vapor adsorption circuit A1. The gasoline vapor is detached from one of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b by controlling in response to the control of the. That is, by controlling each solenoid valve of the gasoline vapor desorption circuit A2 with each solenoid valve of the gasoline vapor adsorption circuit A1, the function of the adsorption-and-desorption tower 4a and the function of the adsorption-and-desorption tower 4b are appropriately controlled. It is supposed to switch.

The inlet 11 receives air used for desorption of gasoline vapor from the outside air. The second pressure reducing valve 31 decompresses the air taken in from the inlet 11. The opening and closing of the fourth solenoid valve 32a and the fourth solenoid valve 32b has a function of conducting or not conducting air depressurized by the second pressure reducing valve 31. The adsorption-and-desorption tower 4b constituting the gasoline vapor desorption circuit A2 functions as a desorption tower for desorbing the gasoline vapor as described above. In addition, similarly to the adsorption-and-desorption tower 4b, when the adsorption-and-desorption tower 4b comprises the gasoline vapor desorption circuit A2, it functions as a desorption tower which desorbs a gasoline vapor.

The 5th solenoid valve 33a and the 5th solenoid valve 33b have a function which conducts or does not conduct air containing a gasoline vapor by controlling opening and closing. The desorption pump 5 has a function of sucking air from outside air through the inlet 11 to supply desorption air to the adsorption-desorption tower 4b or the adsorption-desorption tower 4a. The gasoline desorption pipe 35 is a pipe for conducting air or air containing gasoline vapor. The gasoline desorption pipe 35 is connected to the gasoline adsorption pipe 29 between the first solenoid valve 22 of the gasoline vapor adsorption circuit A1 and the gasoline vapor pump 1.

[Refrigerant Circuit (B)]

The refrigerant circuit B is mounted in the refrigerator 6, and the compressor 41, the condenser 42, the fastener 43, and the refrigerant evaporator 44 are sequentially connected to the refrigerant pipe 45. It is comprised as a heat pump cycle. That is, the refrigerant circuit B conducts the refrigerant in the refrigerant pipe 45, and the refrigerant circulates each component device to cool the brine 7 filled in the condensation tower 2. In the vicinity of the condenser 42, a blower 46 such as a fan for supplying air to the condenser 42 is provided.

The compressor 41 sucks a coolant flowing through the coolant pipe 45, compresses the coolant, and brings the coolant into a high temperature and high pressure state. The condenser 42 discharges the heat of condensation of the refrigerant, and condenses the refrigerant. The tightening device 43 is composed of a pressure reducing valve, an electronic expansion valve, a thermal expansion valve, a capital tube, and the like, and expands the refrigerant under reduced pressure. The refrigerant evaporator 44 takes heat away from the brine 7 (that is, cools the brine 7), and evaporates the refrigerant. In addition, the refrigerant which can be used for the refrigerant circuit B is not particularly limited, and any refrigerant can be used.

[Brine Circuit (C)]

In the brine circuit C, the condensation tower 2, the brine pump 8, the adsorbent cooler 13a and the adsorbent cooler 13b are sequentially connected to the brine pipe 54. The condensation tower 2 has a cylindrical shape in order to reduce the installation area, and has a function as a brine tank for storing the brine 7. The brine 7 is an antifreeze composed of, for example, a petroleum-based substance such as propylene glycol, gasoline or kerosene. The brine 7 is configured to maintain a predetermined temperature range (for example, a range of about 1 to 3 ° C) by controlling the refrigerant circuit B. FIG. That is, in the condensation tower 2, the brine 7 is stirred by cooling the brine 7, and the temperature is adjusted.

The brine pump 8 sucks and pressurizes the brine 7 stored in the condensation tower 2. In other words, the brine 7 is configured to circulate the brine circuit C by the brine pump 8. The adsorbent cooler 13a and the adsorbent cooler 13b cool the inside of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b by the brine 7 supplied from the condensation tower 2. By lowering the internal temperatures of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b, the adsorption capacity of the gasoline vapor can be increased. The brine 7 flowing out from each of the adsorbent cooler 13a and the adsorbent cooler 13b joins and flows back into the condensation tower 2 again.

Moreover, the liquid level meter 55 for detecting the liquid level of the brine 7 inside is provided in the side surface of the condensation tower 2. In addition, the condensation tower 2 is provided with a brine temperature detector 12 such as a thermistor or a thermometer for detecting the temperature of the internal brine 7. The temperature information detected by this brine temperature detector 12 is sent to a control means, not shown, so that the refrigerant circuit B is controlled so as to maintain the temperature of the brine 7 within a predetermined range. This control means controls the opening and closing of each solenoid valve, the drive frequency of each pump, the drive frequency of the compressor 41, the rotation speed of the blower 46, etc.

2 is a schematic diagram illustrating an example of the layout of the gasoline vapor recovery device 100. Based on FIG. 2, an example of the layout of the gasoline vapor collection apparatus 100 is demonstrated. As shown in FIG. 2, the gasoline vapor recovery device 100 includes two side frames (side frame 114 and side frame 115), a ceiling panel 111 serving as an upper surface, and a base serving as a bottom surface. The frame rim 120 is comprised by the board 119. As shown in FIG. Inside the frame frame 120, a plurality of panels (freezer panel 112, air gap panel 113, condensation tower and adsorption-and-desorption tower panel 116, desorption pump panel 117, and gasoline vapor The pump panel 118 is provided in the horizontal direction, and a space for accommodating each device described above is formed.

That is, the refrigerator panel 112, the air gap panel 113, the condensation tower and the adsorption-and-desorption tower panel 116, the desorption pump panel 117, and the gasoline vapor pump panel 118, the frame frame 120 It is provided in the horizontal direction so as to partition the inside at predetermined intervals, and forms a space for accommodating the above-mentioned devices. These panels are supposed to be joined to the side frame by welding. By doing in this way, the movement of the column of each space in the up-down direction can be suppressed. Therefore, the heat dissipation of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b can be suppressed, and the internal temperature rise can be suppressed. For this reason, the adsorption capacity of a gasoline vapor can also be enlarged, and the gasoline vapor collection | recovery efficiency can be improved.

The refrigerator panel 112 is provided at the top of the frame rim 120, and a space (non-explosion-proof error area 125) is formed between the ceiling panel 111 and the refrigerator panel 112, and the refrigerator panel 112 is disposed on the refrigerator panel 112. The refrigerator 6 is mounted. An air gap panel 113 is provided below the refrigerator panel 112, and a space is formed between the refrigerator panel 112 and the air gap panel 113, and the space serves as the air gap 110. . This air gap 110 is a part which has taken special technical measures to prevent it from becoming an ignition source of combustible material from a safety point of view, and mainly refers to an explosion-proof electrical installation here and a non-explosion-proof part ( It is a part that does not take special technical measures so as not to be an ignition source of combustibles, and is provided as a space for separating the refrigerator 6 or the control board on which the control means is mounted. It is prescribed to the purpose.

A condensation tower and a desorption tower panel 116 are provided below the air gap panel 113, and a space is formed between the air gap panel 113 and the condensation tower and the desorption tower panel 116. The condensation tower 2, the adsorption-and-desorption tower 4a, and the adsorption-and-desorption tower 4b are mounted on the adsorption-and-desorption tower panel 116. The condensation tower 2, the adsorption-and-desorption tower 4a, and the adsorption-and-desorption tower 4b are for cooling and recovering gasoline vapors, and the spaces in which these are placed are cooled, so this space is cooled in the following description. It will be called.

A desorption pump panel 117 is provided below the condensation tower and the desorption tower panel 116, and a space is formed between the condensation tower and the desorption tower panel 116 and the desorption pump panel 117. The detachable pump 5 is mounted on the wear pump panel 117. A gasoline vapor pump panel 118 is provided below the removable pump panel 117, a space is formed between the removable pump panel 117 and the gasoline vapor pump panel 118, and the gasoline vapor pump panel 118 is provided. The gasoline vapor pump 1 is mounted. The desorption pump 5 and the gasoline vapor pump 1 generate heat by driving, and the space where these are placed is referred to as a heat generating area in the following description.

And the gasoline vapor collection | recovery apparatus 100 and the gasoline meter 101 are provided on the installation base 121 formed in the gasoline stand. Moreover, the inside pit 122 in which the power supply, the air discharge piping 36, and the discharge port 10 are provided in the installation base 121 is formed. In addition, the size, shape, thickness, and material of the mounting base 121 are not particularly limited, and the size and shape of the gasoline vapor recovery device 100 and the gasoline meter 101, the number of installations, or the size of the gasoline stand, What is necessary is just to decide according to the objective (for example, whether it is intended to use for exclusive use of a passenger car, can use a large vehicle, etc.).

Here, the basic operation | movement of the gasoline vapor collection | recovery apparatus 100 is demonstrated based on FIG. 1 and FIG.

First, the refrigerant circuit B is operated to lower the temperature of the refrigerant evaporator 44. Specifically, the compressor 41 is driven to circulate the refrigerant, thereby lowering the temperature of the refrigerant evaporator 44 provided in the condensation tower 2. At this time, the brine 7 filled in the condensation tower 2 falls to a predetermined temperature. When the brine 7 reaches a predetermined temperature, the drive of the compressor 41 is stopped.

When the temperature of the brine 7 rises above a predetermined range, the drive of the compressor 41 is restarted. That is, the control means of illustration not shown controls the compressor 41 of the refrigerant | coolant circuit B based on the temperature information from the brine temperature detector 12, and maintains the temperature of the brine 7 in a predetermined range. It is. Thus, by controlling the temperature of the brine 7 in the condensation tower 2 to a predetermined range, preparation for the gasoline vapor collection operation is ordered. Then, the liquefied gasoline is refueled from the gasoline meter 101 to an automobile or the like, and the gasoline vapor collection operation starts.

The gasoline vapor recovery operation starts by sucking gasoline vapor extracted from the oil supply port into the gasoline vapor condensation circuit A when the liquefied gasoline is refueled from the oil supply nozzle 102 to a gasoline tank such as an automobile. That is, by the operation of the gasoline vapor pump 1 which comprises the gasoline vapor condensation circuit A, the gasoline vapor collection operation | movement starts when a gasoline vapor is attracted in the gasoline vapor condensation circuit A via the oil supply nozzle 102, and will be.

The aspirated gasoline vapor passes through the pit 122 in the island inside the installation base 121, flows the frame rim 120 upwards from below, and is led into the condensation tower 2 (in FIG. 2). Arrow (a) shown. The gasoline vapor guided into the condensation tower 2 flows from upper to downward while gradually cooling the gasoline condenser 24 in the condensation tower 2. A part of the cooled gasoline vapor liquefies and flows out of the condensation tower 2. The liquefied gasoline is captured and recovered by the gas-liquid separator 3 and separated from the air containing the gasoline vapor. The liquefied gasoline captured by the gas-liquid separator 3 returns to the gasoline meter 101 and is reused.

In addition, the gasoline vapor which is not liquefied flows into the adsorption-and-desorption tower 4a or the adsorption-and-desorption tower 4b. That is, since only the condensation tower 2 cannot liquefy and recover all the gasoline vapors, the gasoline vapors are adsorbed and desorbed by the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b, and are recovered. When adsorbing gasoline vapor in the adsorption-and-desorption tower 4a, the 2nd solenoid valve 26a controls the opening, the 2nd solenoid valve 26b is closed control, and the gasoline vapor which discharged the gas-liquid separator 3 contains the gasoline vapor. Air flows into the adsorption-and-desorption tower 4a.

In the adsorption-and-desorption tower 4a, gasoline vapor is adsorbed by the adsorbent 9a provided in the adsorption-and-desorption tower 4a. Therefore, since the gasoline vapor is adsorbed from the air containing the gasoline vapor, the gasoline vapor concentration is further reduced. For example, the adsorbent 9a adsorb | sucks gasoline vapor to make content of a gasoline vapor 1vol% or less. And this air is discharged | emitted from the discharge port 10 to air | atmosphere via the 3rd solenoid valve 27a and the 1st pressure-reduction valve 28 which are controlled to open | release (arrow b shown in FIG. 2).

On the other hand, in the adsorption-and-desorption tower 4b, desorption of the gasoline vapor adsorbed by the adsorbent 9b is performed. Specifically, when the desorption pump 5 is driven, the air received from the intake port 11 is depressurized by the second pressure reducing valve 31, and the adsorption-and-desorption tower 4b is passed through the fourth solenoid valve 32b. ) (Arrow c shown in FIG. 2). At this time, the pressure in the adsorption-and-desorption tower 4b becomes negative pressure. That is, the gasoline vapor adsorbed to the adsorbent 9b is desorbed from the adsorbent 9b by the action of the negative pressure of the air introduced into the adsorption and desorption tower 4b. Then, the content of the gasoline vapor contained in the air is increased (that is, the gasoline vapor concentration is increased), and it flows out from the adsorption-and-desorption tower 4b to be reused.

The gasoline vapor which flowed out from the adsorption-and-desorption tower 4b is attracted by the desorption pump 5, and flows in again to the gasoline adsorption piping 29 (namely, gasoline vapor adsorption circuit A1). And it joins with the gasoline vaporizer which flowed in from the oil supply nozzle 102, and flows into the condensation tower 2. As shown in FIG. In this manner, the gasoline vapor recovery device 100 is intended to improve the recovery rate of the gasoline vapor. In addition, keeping the inside of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b at low temperature improves the condensation performance and the adsorption performance. This is to prevent the freezing of the moisture contained in it.

The adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b switch the function by a predetermined time interval or by the gasoline vapor concentration near the outlet of the adsorption-and-desorption tower 4a or the adsorption-and-desorption tower 4b. . It has a predetermined limit in the amount which can adsorb gasoline vapor with the adsorbent 9a and the adsorbent 9b, and it is necessary to switch adsorption and desorption of the gasoline vapor in order to perform continuous operation. Because there is. In the above-mentioned example, the case where the adsorption-and-desorption tower 4a which functioned as an adsorption tower is used as a desorption tower, and the adsorption-and-desorption tower 4b which functions as a desorption tower is assumed as a adsorption tower is assumed.

Here, the arrangement of each device in the frame frame 120 will be described in detail.

As mentioned above, in the frame edge 120, the refrigerator 6 is arrange | positioned at the uppermost stage, The air gap 110, a cooling area, and a heat generating area are formed in the following order. In addition, the discharge port 10 for discharging air to the atmosphere is provided at a position below the pit 122 in the island, that is, the heat generating area. In addition, the gasoline desorption pipe 35 is disposed in the cooling area in order to be connected to the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b. That is, the intake port 11 is provided in the vicinity of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b, and intakes air for detachment from the side frame side.

The condensation tower and the adsorption-and-desorption tower panel 116, the desorption pump panel 117, the gasoline vapor pump panel 118, and the base plate 119, the gasoline adsorption piping 29, gasoline desorption piping (35) ) And a through hole through which the air discharge pipe 36 is inserted, and each pipe is provided through the through hole. In the gasoline vapor recovery device 100 having such a layout configuration, the space for installing the air discharge pipe 36 in which air cooled by gasoline vapor recovery is conducted is connected to the space for the removal pump 5 which is a heat generating area, and The installation space of the gasoline vapor pump 1 can be routed.

Therefore, the air which conducts inside the air discharge piping 36 can be heated without using a special means, and the dew condensation of the air discharge piping 36 can be prevented effectively. This eliminates the need for the excess heat insulating material to be wrapped around the air discharge pipe 36, thereby contributing to cost reduction. In addition, by discharging the exhaust air downward, scattering of a small amount of gasoline vapor included in the exhaust air may be prevented. This utilizes the characteristic that gasoline vapor is heavier than air. In addition, it is possible to prevent scattering of gasoline odors, thereby reducing the discomfort for the user who is refueling in the gasoline stand.

Since the inlet 11 of the desorbable air is provided above the outlet 10 for the air discharge, the gasoline vapor contained in the air discharged to the desorbed air in a small amount is not mixed. Therefore, the performance of the adsorbent 9a and the adsorbent 9b can be maintained for a long time. In addition, since the cooling area is provided above the heat generating area, compared with the case where the cooling area is provided below the heat generating area, the air discharge piping is not provided with special heat insulation to the air discharge pipe 36 itself. Condensation of (36) can be effectively prevented.

A plurality of panels (freezer panel 112, air gap panel 113, condensation tower and adsorption and desorption tower panel 116, desorption pump panel 117, and gasoline vapor pump panel) 118)), the movement of heat in the vertical direction can be suppressed, and condensation of the air discharge pipe 36 can be prevented more effectively. In addition, it is possible to prevent the heating from the outside (for example, a heat generating area) to the cooling area, to prevent the extra operation of the refrigerator 6, and to reduce the running cost.

3 is a schematic diagram illustrating another example of the layout of the gasoline vapor recovery device 100. Based on FIG. 3, another example of the layout of the gasoline vapor collection | recovery apparatus 100 is demonstrated. In FIG. 2, the case where the inlet port 11 was provided in the vicinity of the adsorption-and-desorption tower 4a and the adsorption-and-desorption tower 4b was shown as the example, In FIG. 3, the inlet 11 is located in the height position equivalent to the outlet 10. In FIG. The case where it prepared is shown as an example. The intake port 11 may be provided at a position that is equal to or higher than the installation position of the discharge port 10. The desorption air for desorbing the gasoline vapor adsorbed to the adsorbent 9a or the adsorbent 9b is received from the intake port 11 (arrow c1 shown in FIG. 3). It is preferable that this desorption air does not contain a gasoline vapor component.

Therefore, in FIG. 2, the inlet 11 is installed above the installation position of the outlet 10 so that a small amount of gasoline vapor component contained in the air discharged from the outlet 10 is not included in the desorption air. Doing. However, according to the layout of the gasoline vapor collection apparatus 100, it is also assumed that the intake port 11 should be provided at the same height position as the discharge port 10. Therefore, in FIG. 3, the direction of the inlet port 11 and the direction of the outlet port 10 are not made to be the same direction. Even in this way, a small amount of gasoline vapor component contained in the air discharged from the discharge port 10 (arrow b1 shown in FIG. 3) is included in the desorption air taken in from the intake port 11. There is no

As shown in FIG. 2, when the outlet 10 is provided in the pit 122 in the island, the inlet 11 is discharged from the outlet 10 if it is provided at a height above the ground plane of the gasoline vapor recovery device. The air to be made is not taken in from the intake port 11. However, as shown in FIG. 3, in the case where the inlet port 11 and the outlet port 10 are provided at the same height position, when the inlet port 11 direction and the outlet port 10 direction are in the same direction, the outlet port 10 The air discharged from the gas is taken in from the intake port 11. In order to avoid such a problem, in FIG. 3, the direction of the inlet 11 and the direction of the outlet 10 are not made to become the same direction.

4 is a schematic view showing another example of the layout of the gasoline vapor recovery device 100. Based on FIG. 4, another example of the layout of the gasoline vapor collection | recovery apparatus 100 is demonstrated. In FIG. 2 and FIG. 3, in order to prevent the air discharged from the outlet 10 from being received from the inlet 11, providing the inlet 11 at a position equal to or higher than the installation position of the outlet 10. Although description was made in FIG. 4, the invention for explaining that the air discharged from the discharge port 10 is not further received from the intake port 11 will be described.

In FIG. 2, the discharge port 10 is directed downward in the vertical direction, and in FIG. 3, the discharge port 10 is directed downward in the horizontal direction, but this range, that is, the range from the horizontal direction to the vertical direction downward (ie, The discharge port 10 may be provided so as to face the arrow (b) to the arrow (b1) shown in FIG. 4. Since the gasoline vapor component is heavier than air, if the air is discharged within this range, the gasoline vapor odor does not rise to a higher level. Therefore, the scattering of some amount of gasoline vapor contained in exhaust air can be prevented, and the discomfort for the user who is refueling in a gasoline stand can be reduced.

On the other hand, in FIG. 2 and FIG. 3, the case where the inlet 11 is directed to the horizontal direction is shown as an example, but as shown in FIG. 4, the range from the horizontal direction to the vertical direction (that is, the arrow c shown in FIG. 4). ) May be provided so that the air inlet 11 is directed toward the center of the arrow. By adjusting the direction of the inlet port 11 and the direction of the outlet port 10 properly, the air discharged from the outlet port 10 can be prevented from being received further from the inlet port 11. The direction of the inlet port 11 can be adjusted by bending the gasoline desorption pipe 35, and the direction of the outlet 10 can be adjusted by bending the air discharge pipe. Therefore, based on the size, shape, etc. of the gasoline vapor collection apparatus 100, the number of arrangement selection of each piping can be increased, the layout of each piping can be determined, and the space can be conserved or contributed to design. Become.

1: gasoline vapor pump
2: condensation tower
3: gas-liquid separator
4a: adsorption and desorption tower
4b: adsorption and desorption tower
5: desorption pump
6: freezer
7: brine
8: brine pump
9a: adsorbent
9b: adsorbent
10: outlet
11: intake vent
12: brine temperature detector
13a: adsorber cooler
13b: adsorbent cooler
22: first solenoid valve
24: gasoline condenser
26a: second solenoid valve
26b: 2nd solenoid valve
27a: third solenoid valve
27b: third solenoid valve
28: first pressure reducing valve
29: gasoline adsorption pipe
30: on-off valve
31: second pressure reducing valve
32a: 4th solenoid valve
32b: fourth solenoid valve
33a: fifth solenoid valve
33b: fifth solenoid valve
35: gasoline desorption pipe
36: piping for air discharge
41: compressor
42: condenser
43: tightening device
44: refrigerant evaporator
45: refrigerant pipe
46: blower
54: brine piping
55 liquid level gauge
100: gasoline vapor recovery device
101: gasoline meter
102: oil supply nozzle
110: air gap
111: ceiling panel
112: freezer panel
113: air gap panel
114: side frame
115: side frame
116: condensation tower and adsorption and desorption tower panel
117: removable pump panel
118: Gasoline Vapor Pump Panel
119: base plate
120: frame border
121: installation foundation
122: Pete in Ireland
125: non-explosion proof error area
A: Gasoline Vapor Condensation Circuit
A1: gasoline vapor adsorption circuit
A2: Gasoline Vapor Desorption Circuit
B: refrigerant circuit
C: brine circuit

Claims (10)

A gasoline vapor pump for sucking gasoline vapor discharged from the gasoline tank,
A condensation column filled with brine and cooling the gasoline vapor sucked by the gasoline vapor pump;
An adsorption and desorption tower for adsorbing the gasoline vapor sucked by the gasoline vapor pump with an adsorbent and desorbing the gasoline vapor adsorbed to the adsorbent;
A desorption pump for supplying desorption air to the adsorption and desorption tower;
It has a frame frame for accommodating the gasoline vapor, the condensation tower, the adsorption-desorption tower and the desorption pump therein,
The said gas condenser tower and the said adsorption-and-desorption tower are arrange | positioned above the said gasoline vapor pump and the said desorption pump within the said frame edge, The gasoline vapor collection apparatus characterized by the above-mentioned. The method of claim 1,
It is provided with a freezer for cooling the brine filled in the condensation tower,
A gasoline vapor collecting device, characterized in that the refrigerator is disposed at the top within the frame frame. The method of claim 2,
The gasoline vapor recovery device, characterized in that the refrigerator, the gasoline vapor, the condensation tower, the adsorption-desorption tower and the desorption pump are arranged in a space partitioned by a panel provided in a horizontal direction. 4. The method according to any one of claims 1 to 3,
Providing an air discharge pipe for conducting air after adsorption of the gasoline vapor in the adsorption and desorption tower;
A gasoline vapor recovery device, wherein the air discharge pipe passes through an accommodation space between the gasoline vapor pump and the desorption pump. The method of claim 4, wherein
A gas discharge port provided at an end portion of the air discharge pipe is provided below an accommodation space of the gasoline vapor pump and the desorption pump. 6. The method of claim 5,
The gasoline vapor recovery device characterized in that the discharge port is directed in the range of the vertical direction downward from the horizontal direction. The method according to claim 5 or 6,
Providing a gasoline desorption pipe conducting desorption air for desorption of the gasoline vapor adsorbed to the adsorbent of the adsorption / desorption tower,
A gasoline vapor collecting device, wherein an intake port provided at an end of the gasoline desorption pipe is provided at a height equal to or greater than the installation position of the discharge port. The method of claim 7, wherein
In providing the inlet port at a position higher than the outlet port,
The gasoline vapor collecting device, characterized in that the inlet port is directed in the horizontal direction, and the discharge port is directed downward in the vertical direction. The method of claim 7, wherein
In providing the inlet and the outlet at the same height,
A gasoline vapor recovery device, characterized in that the inlet port and the outlet port face different directions. The method according to any one of claims 7 to 9,
A gasoline vapor recovery device, wherein the intake port is directed within a range from the horizontal direction to the vertical direction.

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