KR102665803B1 - Dispensing valve with nozzle cooling means - Google Patents

Abstract

The present invention relates to a dispensing valve for injecting a solution into an object, which includes a solution inlet 121 that receives the solution from a solution injection pipe 50 and a discharge nozzle 123 that discharges the solution to the object. 100) and; a valve body 110 provided on an upper portion of the dispensing valve 100 and opening and closing the dispensing valve 100; A valve cooling unit 130 is disposed in contact with the side of the valve body 110 and the upper surface of the dispensing valve 100 to indirectly cool the valve body 110 and the dispensing valve 100 using cooling air. )and; It is characterized in that it includes a cooling air generating circulation unit 140 that cools the valve cooling unit 130 and re-cools the heat exchange air whose temperature has risen to circulate and supply the cooling air to the valve cooling unit 130. .

Description

Dispensing valve with nozzle cooling means}

The present invention relates to a dispensing valve, and more specifically, to a dispensing valve in which a dispensing nozzle that discharges a solution to an object is provided with a nozzle cooling means to maintain a constant viscosity of the solution.

Recently, secondary battery modules are widely used in various fields. Lithium-ion batteries are most often used as secondary batteries in secondary battery modules.

The secondary battery module not only protects the secondary battery from external shocks, but also effectively controls stress changes caused by repeated charging and discharging of the secondary battery, and prevents thermal runaway in the event of a secondary battery fire, preventing secondary damage. A design is needed to avoid giving up.

For this purpose, thermal runaway prevention manufacturing methods using heat-resistant liquid materials have been widely used recently.

When manufacturing a thermal runaway prevention layer using a liquid material, not only can the thickness of the thermal runaway prevention layer change elastically in response to expansion of components due to heat and moisture of the secondary battery through the compressive stress effect, but also the inside of the secondary battery module. If a fire occurs, secondary damage can be prevented by preventing thermal runaway.

Figure 1 is a diagram showing a dispensing device (1) for injecting a solution to prevent thermal runaway into a secondary battery module (M).

As shown, the dispensing device 1 includes a base 10 on which the secondary battery module M is mounted, a dispensing head 20 provided on the upper part of the base 10, and a dispensing head 20. A dispensing device that is coupled to the head drive unit 30, which moves in the Includes valve 40.

Figure 2 is an enlarged perspective view showing the configuration of a conventional dispensing valve 40. As shown, the conventional dispensing valve 40 includes a valve body 41 that is connected to a control unit (not shown), a control line 60, and a data line 61 to receive the solution injection timing and injection amount, and the valve body. It includes a dispensing nozzle 120 provided at the lower part of (41).

The dispensing nozzle 120 is connected to the solution injection pipe 50 and has a solution inlet 121 that receives the solution (B), and a discharge nozzle that discharges the solution (B) introduced inside to the secondary battery module (M). (123) is provided.

Here, the conventional dispensing valve 40 is coupled to the dispensing head 20 as shown in FIG. 1 and moves or rotates in the ) The solution (B) is discharged and injected into the secondary battery module (M) loaded at a distance.

However, when the dispensing valve 40 is moved or rotated, heat is generated in the valve body 41 due to friction. The heat generated in this way is transferred to the dispensing nozzle 41 and changes the viscosity of the solution B moving through the inside of the dispensing nozzle 41.

If the viscosity of the solution (B) changes, the accuracy of the discharge amount decreases when the solution (B) is discharged to the secondary battery module (M) while spaced apart, and there is a problem in which the thermal runaway prevention layer of the secondary battery module is not properly formed.

The purpose of the present invention is to solve the above-mentioned problem and to provide a dispensing valve that can improve the dispensing accuracy of the solution by maintaining the viscosity of the solution constant regardless of position movement.

Another object of the present invention is to provide a dispensing valve that indirectly cools the nozzle using cooling air, thereby maintaining the viscosity of the solution constant without affecting the performance of the valve body.

The above objects and various advantages of the present invention will become more apparent to those skilled in the art from preferred embodiments of the present invention.

The object of the present invention described above can be achieved by a dispensing valve that injects a solution into a subject. The dispensing valve of the present invention includes a dispensing valve 100 having a solution inlet 121 that receives a solution from a solution injection pipe 50 and a discharge nozzle 123 that discharges the solution to an object; a valve body 110 provided on an upper portion of the dispensing valve 100 and opening and closing the dispensing valve 100; A valve cooling unit 130 is disposed in contact with the side of the valve body 110 and the upper surface of the dispensing valve 100 to indirectly cool the valve body 110 and the dispensing valve 100 using cooling air. )and; It is characterized in that it includes a cooling air generating circulation unit 140 that cools the valve cooling unit 130 and re-cools the heat exchange air whose temperature has risen to circulate and supply the cooling air to the valve cooling unit 130. .

According to one embodiment, the valve cooling unit 130 includes a cooling chamber 131 formed of an insulating material and located between the dispensing valve 100 and the valve body 110; A heat exchange box (133) accommodated inside the cooling chamber (131), one side of which is in contact with the valve body (110), a lower surface of which is located in contact with the dispensing valve (100), and formed of a metal with a high heat transfer rate. and; It is arranged in a zigzag shape from top to bottom along the entire area inside the heat exchange box 133 to form a path through which cooling air moves, with a cooling air inlet 135a through which cooling air flows in at one end, and a cooling air inlet 135a through which cooling air flows in, and at the other end after heat exchange. It may include a cooling air circulation pipe 135 provided with a heat exchange air outlet 135b through which heat exchange air with an increased temperature is discharged.

According to one embodiment, the cooling air generating circulation unit 140 includes a heat exchange air inlet pipe 146 connected to the heat exchange air outlet 135b and a cooling air discharge pipe 147 connected to the cooling air inlet 135a. A cooling air generation box (141) connected to the upper and lower parts, respectively; a Peltier element 143 that is coupled to the front of the cooling air generation box 141 and transmits cold air to the cooling air generation box 141 using the Peltier effect; It may include a cooling fan 145 that is provided in a direction opposite to the cooling air generation box 141, centered on the Peltier element 143, and discharges heat generated from the Peltier element 143 to the outside.

According to one embodiment, it further includes a temperature sensor 150 provided inside the valve body 110 to detect the current temperature of the valve body 110, and the current temperature detected by the temperature sensor 150 It may further include a control unit (not shown) that compares the reference temperature at which the solution maintains the reference viscosity and adjusts the amount of voltage transmitted to the Peltier element 143 so that the valve body 110 can be maintained at the reference temperature. there is.

The dispensing valve according to the present invention is equipped with a valve cooling unit that can prevent the internal temperature from rising due to frictional heat generated during movement, thereby preventing changes in the viscosity of the solution discharged to the object.

As a result, the viscosity of the solution can be maintained at a constant standard viscosity, which has the advantage of accurately controlling the amount of solution discharged to the object.

In addition, the adoption of an indirect cooling method using cooling air has the advantage of preventing rapid temperature differences, preventing performance degradation of internal components, and enabling stable cooling.

Figure 1 is an example diagram showing the process of injecting a solution into a secondary battery module by a conventional dispensing device.
Figure 2 is a perspective view showing the configuration of a conventional dispensing valve;
3 is a schematic diagram showing the configuration of a dispensing valve according to the present invention;
Figure 4 is an illustration showing the heat exchange process between the dispensing nozzle and the valve cooling part of the dispensing valve according to the present invention;
Figure 5 is an exemplary diagram showing the operation process of the thermoelectric element of the cooling air generating circulation part of the dispensing valve according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that identical members in each drawing may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

Figure 3 is a schematic diagram schematically showing the configuration of the dispensing valve 100 according to the present invention.

As shown, the dispensing valve 100 according to the present invention includes a valve body 110 that receives a control signal for the dispensing nozzle 120 from a control unit (not shown) of the dispensing device 1, and a valve body. A dispensing nozzle (120) is provided at the lower part of (110) and discharges the solution (B) supplied from the solution injection pipe (50) to the object, and is fitted with the side of the valve body (110) and the dispensing nozzle (120). A valve cooling unit 130 is provided in contact with the valve body 110 and the dispensing nozzle 120 to cool the valve body 110 and the dispensing nozzle 120, and is spaced apart from the valve body 110 to generate cooling air and circulate it to the valve cooling unit 130. It includes a cooling air generating circulation unit 140 and a temperature sensor 150 provided inside the valve body 110 to detect the current temperature of the valve body 110.

In the dispensing valve 100 according to the present invention, the valve cooling unit 130 is coupled to the valve body 110, and the valve body 110 and the dispensing nozzle 120 are cooled using cooling air (A2). As a result, the viscosity of the solution discharged through the dispensing valve 100 is reduced by frictional heat generated as the dispensing valve 100 moves or rotates in a straight line in the X-axis and Y-axis while being coupled to the dispensing head 20. Change can be prevented.

Accordingly, there is an advantage that the solution can be accurately injected by maintaining the viscosity of the solution (B) discharged to the object constant at the reference viscosity.

Here, the solution injected by the dispensing valve 100 of the present invention may be UV coating liquid, silicone, paraffin, thermal runaway prevention liquid material, etc., and the object into which the solution is injected may be various products other than secondary battery modules.

The valve body 110 is fixedly coupled to the dispensing head 20, moves along the head driving unit 30 together with the dispensing head 20, and supports the dispensing nozzle 120 so that it can discharge the solution to the object. . As shown in FIG. 2, the valve body 110 is connected to a control unit (not shown), a control line 60, and a data line 61 to determine the discharge amount of the solution (B) to be discharged by the dispensing nozzle 120 to the object. and discharge time are received. And, the valve body 110 controls the opening and closing of the dispensing nozzle 120 according to a control signal from a control unit (not shown).

If the object is a secondary battery module, the amount of solution (B) injected changes each time depending on tolerance, assembly error, weight, etc. At this time, solution (B) may be silicone or paraffin. The control unit (not shown) calculates the discharge amount by considering the weight and temperature of the secondary battery module (M) and the viscosity of the solution (B) and transmits it to the valve body 110.

The dispensing nozzle 120 is provided at the lower part of the valve body 110 and discharges the internal solution (B) to the object according to the opening/closing signal of the valve body 110. The upper part of one side of the dispensing nozzle 120 is provided with a solution inlet 121 that is connected to the solution injection pipe 50 and receives the solution (B), and the lower part of the other side has a discharge nozzle (121) that discharges the solution (B) to the object. 123) is provided.

A passage through which the solution (B) moves is provided between the solution inlet 121 and the discharge nozzle 123, and the solution inlet 121 and the discharge nozzle 123 are opened and closed by control of the valve body 110.

The valve cooling unit 130 is provided in the form of a box and is coupled to the valve body 110 so that its side and bottom surfaces are in contact with the valve body 110 and the dispensing nozzle 120. The valve cooling unit 130 receives cooling air (A2) from the cooling air generating circulation unit 140 and circulates it internally, and the valve body 110 and dispensing nozzle 120 that are in contact with each other provide cooling air (A2). Cooled by cold air.

As a result, the valve body 110 and the dispensing nozzle 120, whose temperature has risen due to frictional heat caused by linear movement and rotation, are cooled and the viscosity of the solution B inside the dispensing nozzle 120 becomes constant.

The valve cooling unit 130 includes a cooling chamber 131 coupled to the valve body 110, a heat exchange box 133 provided inside the cooling chamber 131, and a cooling air circulation pipe formed inside the heat exchange box 133. Includes (135).

Figure 4 is an example diagram schematically showing the cooling process of the cooling chamber 131 of the valve cooling unit 130. As shown in Figures 3 and 4, the cooling chamber 131 is provided on the upper part of the dispensing nozzle 120 to surround the heat exchange box 133. The cooling chamber 131 is made of an insulating material to prevent internal cold air from being released to the outside.

The heat exchange box 133 is provided inside the cooling chamber 131, with its bottom surface in contact with the dispensing nozzle 120 and its side surface in contact with the valve body 110. The heat exchange box 133 is made of a metal material with high heat transfer efficiency, allowing cold air inside to be quickly transferred to the valve body 110 and the dispensing nozzle 120.

The cooling air circulation pipe 135 is arranged in a zigzag shape from the top to the bottom of the heat exchange box 133 and evenly transmits cold air into the heat exchange box 133. The upper part of the heat exchange box 133 is provided with a cooling air inlet 135a and a heat exchange air outlet 135b, respectively, and the cooling air circulation pipe 135 has a cooling air inlet 135a and a heat exchange air outlet 135b at both ends. ) is connected to.

The cooling air (A2) flowing in through the cooling air inlet (135a) moves along the cooling air circulation pipe (135) and exchanges heat with the internal air (A) contained within the heat exchange box (133) to transfer cold air. The heat exchange air (A1), whose temperature has been raised by heat exchange with the internal air (A), is discharged through the heat exchange air outlet (135b).

The valve cooling unit 130 of the present invention cools the valve body 110 and the dispensing nozzle 120 not directly but through indirect cooling through heat exchange using cooling air. As a result, sudden temperature changes are prevented, thereby preventing a decrease in the performance of fine parts inside the valve body 110 and the dispensing nozzle 120, and only the viscosity of the solution (B) is kept constant.

Meanwhile, as shown in FIG. 4, a heat exchange plate 137 may be further provided in the boundary area with the dispensing nozzle 120 at the bottom of the heat exchange box 133 to improve cooling efficiency. The heat exchange plate 137 has a plurality of heat exchange fins 137a protruding from the surface to transmit a relatively larger amount of cold air to the dispensing nozzle 120 than to other areas.

The cooling air generation circulation unit 140 generates cooling air (A2) and circulates it through the cooling air circulation pipe 135 of the heat exchange box 133 to cool the valve body 110 and the dispensing nozzle 120. As shown in FIG. 3, the cooling air generation circulation unit 140 is provided in contact with the cooling air generation box 141 and supplies cold air (C) to the cooling air generation box 141. A supply Peltier element 143, a cooling fan 145 provided in front of the Peltier element 143 to dissipate heat generated by the Peltier element 143, a cooling air inlet 135a, and a cooling air generation box ( It includes a cooling air discharge pipe 147 connecting the heat exchange air outlet 141) and a heat exchange air inlet pipe 146 connecting the heat exchange air outlet 135b and the cooling air generation box 141.

The cooling air generation box 141 circulates through the valve cooling unit 130 and provides a space in which the heat exchange air (A1), whose temperature has been raised, comes in contact with the cold air (C) generated by the Peltier element 143 and is cooled.

Figure 5 is a schematic diagram showing the heat transfer process between the cooling air generation box 141 and the Peltier element 143. As shown, the cooling air generation box 141 is formed in the form of a narrow rectangular enclosure to improve the heat transfer efficiency of the heat exchange air (A1) and the cold air (C). The cooling air generation box 141 is made of an insulating material except for the area in contact with the Peltier element 143, thereby minimizing the discharge of internal cold air to the outside.

The heat exchange air inlet pipe 146 is connected to the upper coupling port 141a at the top of the cooling air generation box 141, and the cooling air discharge pipe 147 is connected to the side coupling port on the lower side of the cooling air generation box 141 ( 141b). Accordingly, the heat exchange air (A1) introduced to the upper part moves to the lower part, comes into contact with the cold air (C) generated from the Peltier element 143, and is discharged through the cooling air discharge pipe 147 after the temperature decreases.

The Peltier element 143 is provided in front of the cooling air generation box 141 and supplies cold air (C) to the cooling air generation box 141 using the Peltier effect. The Peltier effect is a phenomenon in which when a direct current voltage is applied across two different devices, one side absorbs heat and the other side generates heat depending on the direction of the current.

When a voltage is applied, the Peltier element 143 supplies cold air (C) toward the cooling air generation box 141 and releases hot air (H) in the opposite direction. Cold air (C) is delivered into the cooling air generation box 141 through the cold air delivery plate 142 provided between the Peltier element 143 and the cooling air generation box 141.

A cooling fan 145 is provided in front of the Peltier element 143, that is, in the direction opposite to the cooling air generation box 141, to discharge the heat (H) emitted from the Peltier element 143 to the outside. In order to increase the cooling efficiency of the Peltier element 143, heat dissipation efficiency is important, so it is quickly cooled using the cooling fan 145.

The heat exchange air inlet pipe 146 connects the heat exchange air outlet 135b of the heat exchange box 133 and the upper coupling port 141a of the cooling air generation box 141 to move the heat exchange air A1. The cooling air discharge pipe 147 connects the side coupling port 141b and the cooling air inlet 135a to supply cooling air A2 to the heat exchange box 133.

At this time, a driving force is applied on the path of the heat exchange air inlet pipe 146 so that the cooling air (A2) and the heat exchange air (A1) can circulate between the cooling air circulation pipe 135 and the cooling air generation box 141. A heat exchange air circulation pump 148 is provided. In some cases, the heat exchange air circulation pump 148 may be provided in a heat exchange air storage tank (not shown).

In addition, although not shown in the drawing, a cooling air circulation pump (not shown) that applies driving force so that the cooling air (A2) can be moved through the cooling air discharge pipe 147 may be provided inside the cooling air generation box 141. You can.

Here, as shown in FIG. 3, the valve body 110, the valve cooling unit 130, and the dispensing nozzle 120 are integrated and fixed to the dispensing head 20. At this time, the cooling air generating circulation unit 140 may be provided on the side, top, or bottom of the dispensing head 20 in consideration of the design movement line.

Meanwhile, a temperature sensor 150 is provided inside the valve body 110. The temperature sensor 150 detects the temperature of the valve body 110 and transmits it to the control unit (not shown). The control unit (not shown) adjusts the strength of the voltage applied to the Peltier element 143 by comparing the current temperature detected by the temperature sensor 150 with the reference temperature at which the solution (B) can maintain the reference viscosity.

That is, if the current temperature of the valve body 110 is higher than the set reference temperature, the voltage applied to the Peltier element 143 is adjusted strongly, and if the current temperature is lower than the set reference temperature, the voltage applied to the Peltier element 143 is adjusted weakly. Adjust.

The operation process of the dispensing valve 100 according to the present invention having this configuration will be described with reference to the drawings.

The dispensing valve 100 of the present invention is coupled to the dispensing head 20 of the dispensing device 1 shown in FIG. 1. An object to be injected with the solution (B) is seated on the base 10.

The dispensing head 20 moves to the top of the object under the control of a control unit (not shown), and the dispensing valve 100 discharges the solution B to the object.

The valve body 110 opens and closes the dispensing nozzle 120 according to a control signal from the control unit (not shown), and the solution B supplied from the solution injection pipe 50 is discharged to the object through the discharge nozzle 123. . In this process, the dispensing head 20 moves, friction heat is generated in the valve body 110, and the internal temperature increases.

The temperature sensor 150 provided inside the valve body 110 detects the current temperature and transmits it to the control unit (not shown). The control unit (not shown) applies voltage to the Peltier element 143 so that the valve body 110 can be cooled to the reference temperature, that is, the temperature at which the solution B can maintain the reference viscosity.

When voltage is applied to the Peltier element 143, cold air (C) is generated on one side of the Peltier element 143, as shown in FIG. 5, and is transmitted to the cooling air generation box 141 through the cold air transfer plate 142. do. The heat exchange air (A1) introduced into the cooling air generation box (141) exchanges heat with the cold air (C) delivered through the cold air transfer plate (142) and the temperature decreases. The cooling air (A2) whose temperature has decreased is moved to the cooling air discharge pipe (147) through the side coupling port (141b).

As shown in FIG. 4, the cooling air discharge pipe 147 is connected to the cooling air inlet 135a, and cooling air A2 is supplied to the cooling air circulation pipe 135. The cooling air (A2) moves along the cooling air circulation pipe (135) and exchanges heat with the internal air (A) to cool the valve body (110) and the dispensing nozzle (120) in contact with the heat exchange box (133).

The heat exchange air (A1), which exchanges heat with the internal air (A) and has an increased temperature, is discharged to the heat exchange air outlet (135b) and then passes through the heat exchange air inlet pipe (146) to the upper coupling port (141a) of the cooling air generation box (141). ) flows into.

Then, it comes into contact with the cold air of the Peltier element 143 again, and after the temperature decreases, it moves along the same circulation path and cools the valve body 110 and the dispensing nozzle 120.

Here, the solution (B) moving along the dispensing nozzle 120 exchanges heat with the heat exchange box 133 and is maintained at the reference viscosity. Since the solution (B) is discharged at a certain distance from the object as shown in FIG. 1, the viscosity has a significant effect on the discharge amount.

The dispensing valve 100 of the present invention has the effect of allowing the solution to be accurately discharged to the object at the discharge amount calculated by the control unit (not shown) because the solution is maintained at a constant standard viscosity.

Meanwhile, as shown in FIG. 4, a cooling fan 145 is provided in front of the Peltier element 143 to quickly dissipate the heat (H) generated by the Peltier element 143 to the outside.

Here, the dispensing valve 100 according to the present invention cools the valve body 110 and the dispensing nozzle 120 by circulating cooling air, but in some cases, cooling may be performed using cooling water.

As discussed above, the dispensing valve according to the present invention is equipped with a valve cooling unit that can prevent the internal temperature from increasing due to frictional heat generated during movement, thereby preventing changes in the viscosity of the solution discharged to the object.

As a result, the viscosity of the solution can be maintained at a constant standard viscosity, which has the advantage of accurately controlling the amount of solution discharged to the object.

In addition, the adoption of an indirect cooling method using cooling air has the advantage of preventing rapid temperature differences, preventing performance degradation of internal components, and enabling stable cooling.

The embodiments of the dispensing valve of the present invention described above are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. You will be able to. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims. In addition, the present invention should be understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims.

1: Dispensing device 10: Base
20: Dispensing head 30: Head driving unit
40: dispensing valve 41: valve body
43: dispensing nozzle 43a: inlet
43b: discharge port 50: solution injection pipe
60: control line 61: data line
100: dispensing valve 110: valve body
120: Dispensing nozzle 121: Solution inlet
123: Discharge nozzle 130: Valve cooling unit
131: cooling chamber 133: heat exchange box
135: Cooling air circulation pipe 135a: Cooling air inlet
135b: heat exchange air outlet 137: heat exchange plate
137a: heat exchange fin 140: cooling air generation circulation unit
141: Cooling air generation box 141a: Upper coupling port
141b: side coupling port 142: cold air transfer plate
143: Peltier element 145: Cooling fan
146: heat exchange air inlet pipe 147: cooling air discharge pipe
148: heat exchange air circulation pump 150: temperature sensor
A: Internal air
A1: Heat exchange air
A2: Cooling air
M: Secondary battery module

Claims (4)

In the dispensing valve for injecting a solution into a subject,
a dispensing valve 100 having a solution inlet 121 that receives the solution from the solution injection pipe 50 and a discharge nozzle 123 that discharges the solution to the object;
a valve body 110 provided on an upper portion of the dispensing valve 100 and opening and closing the dispensing valve 100;
It is provided at the lower part of the valve body 110 and discharges the internal solution (B) to the object according to the opening and closing signal of the valve body 110, and is connected to the solution injection pipe 50 at the upper part of one side to inject the solution (B). It includes a solution inlet 121 for receiving the supply and a discharge nozzle 123 for discharging the solution (B) to the object at the lower part of the other side, and the solution inlet 121 and the discharge nozzle 123 are controlled by the valve body 110. A dispensing nozzle (120) that is opened and closed by;
A valve cooling unit 130 is disposed in contact with the side of the valve body 110 and the upper surface of the dispensing valve 100 to indirectly cool the valve body 110 and the dispensing valve 100 using cooling air. )and;
It includes a cooling air generating circulation unit 140 that cools the valve cooling unit 130 and re-cools the heat exchange air whose temperature has risen to circulate and supply cooling air to the valve cooling unit 130,
The valve cooling unit 130,
It is made of an insulating material and is located between the dispensing valve 100 and the valve body 110, and is provided on the upper part of the dispensing nozzle 120 to surround the heat exchange box 133, so that the cold air inside is released to the outside. a cooling chamber 131 that blocks it;
A heat exchange box (133) accommodated inside the cooling chamber (131), one side of which is in contact with the valve body (110), a lower surface of which is located in contact with the dispensing valve (100), and formed of a metal with a high heat transfer rate. and;
It is arranged in a zigzag shape from top to bottom along the entire area inside the heat exchange box 133 to form a path through which cooling air moves, with a cooling air inlet 135a through which cooling air flows in at one end, and a cooling air inlet 135a through which cooling air flows in, and at the other end after heat exchange. A cooling air circulation pipe (135) provided with a heat exchange air outlet (135b) through which heat exchange air with an increased temperature is discharged;
It is provided in the border area with the dispensing nozzle 120 at the bottom of the heat exchange box 133, and a plurality of heat exchange fins 137a are formed to protrude on the surface, allowing the dispensing nozzle 120 to generate a relatively larger amount of cold air than other areas. It includes a heat exchange plate (137) that allows the
The cooling air generating circulation unit 140,
A cooling air generation box (141) in which a heat exchange air inlet pipe (146) connected to the heat exchange air outlet (135b) and a cooling air discharge pipe (147) connected to the cooling air inlet (135a) are coupled to the upper and lower parts, respectively;
A Peltier element 143 that is coupled to the front of the cooling air generation box 141 and transmits cold air to the cooling air generation box 141 using the Peltier effect;
a cooling fan 145 that is provided in a direction opposite to the cooling air generation box 141, centered on the Peltier element 143, and discharges heat generated from the Peltier element 143 to the outside;
On the path of the heat exchange air inlet pipe 146, there is a heat exchange air circulation that applies driving force so that the cooling air (A2) and the heat exchange air (A1) can circulate between the cooling air circulation pipe 135 and the cooling air generation box 141. A dispensing valve comprising a pump (148).
delete delete According to paragraph 1,
It further includes a temperature sensor 150 provided inside the valve body 110 to detect the current temperature of the valve body 110,
By comparing the current temperature detected by the temperature sensor 150 with the reference temperature at which the solution maintains the reference viscosity, the amount of voltage delivered to the Peltier element 143 is adjusted to maintain the valve body 110 at the reference temperature. A dispensing valve characterized in that it further includes a control unit (not shown) for adjusting.

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