KR102652964B1 - Heater assembly for heating fluid - Google Patents

Abstract

The present invention relates to a heater assembly for heating a fluid, which includes a flow path case in which a heating flow path is formed inside, an inlet port and an outlet port connecting the heating flow path and the outside are formed on one side, and one side opposite to the heating flow path is open; and a heat plate covering an open surface of the flow path case and on which a heating wire is installed, wherein the heating flow path has a configuration in which a plurality of sets are arranged adjacently along one direction, and an inlet space for fluid is located on one side relative to the one direction. A fluid outlet space is formed on the other side, so that the fluid flowing in from the inlet port branches and flows from the inlet space to the plurality of sets of heating passages, then collects in the outlet space and is discharged through the outlet port, Since the fluid moves from the inlet space to the outlet space through multiple paths, temperature control can be easily performed by minimizing flow resistance in the heating passage and preventing local thermal distribution uniformity.

Description

Heater assembly for heating fluid {HEATER ASSEMBLY FOR HEATING FLUID}

The present invention relates to a heater assembly for heating fluid, and more specifically, to a fluid heating assembly for heating fluid that performs various functions in hybrid vehicles (HEV, PHEV), battery electric vehicles (BEV), and fuel cell vehicles (FCEV). It relates to a heater assembly.

A heater has been developed to heat the fluid in eco-friendly vehicles without internal combustion engines, such as hybrid vehicles (HEV, PHEV), battery electric vehicles (BEV), and fuel cell vehicles (FCEV), to maintain battery performance and improve cold start efficiency. It is a core part that plays a very important role in vehicles.

As a prior art of heaters for heating fluids, Korean Patent No. 0870058 (Prior Document 1) and Korean Patent No. 0933884 (Prior Document 2) disclose heaters containing so-called PTC heating elements for vehicles as described above. It is done.

As such heating elements are heated, a large electrical resistance appears rapidly, and as a result, the current amount is lowered, making automatic adjustment easy.

Referring to FIGS. 1A and 1B, the electric heating device according to Prior Document 1 will be schematically described as follows.

The electric heating device 2 according to prior art document 1 is a housing in which a separation wall 12 is formed to separate a heating chamber 14 from a circulation chamber 10 that accommodates a predetermined medium and flows the medium inside. (4), an inlet (6) for supplying the medium to the circulation chamber (10), and an outlet (8) for leading the heated medium out of the circulation chamber (10), PTC heating An element 18 is configured to be received within the heating chamber 14 .

However, when using a PTC heating element, there were many cases where it was damaged during use by being pressed against the electrode due to the expansion of the heating element due to heat, so it did not perform its function properly. The conditions to be considered to solve this problem increased, leading to an increase in the number of parts. As the number increased, installation work became difficult and installation time was also high.

In order to solve this problem, the heater assembly for heating fluid described below (Patent Document 3), which the present applicant has applied for, includes a flow path case in which a meandering flow path is formed, and a heat plate covering one open surface of the flow path case. , and a cover that covers the heat plate and is hermetically coupled to the flow path case, wherein a heating wire is installed on the surface or inside of the heat plate facing the cover.

However, the heater assembly for heating the fluid of (Patent Document 3) has a large flow resistance because the fluid is heated while flowing along a single flow path continuously connected from the inlet port formed in the flow path case to the outlet port, and thus still partially generates heat. There was a disadvantage that temperature control was difficult due to an imbalance.

Korean Patent Publication No. 0870058 (2008.11.17) Korean Patent Publication No. 0933884 (2009.12.17) Korean Patent Publication No. 10-2019-0092052 (2019.08.07)

The present invention was created to solve the problems of the prior art described above. The purpose of the present invention is to control temperature by minimizing the flow resistance in the heating passage constituting the passage case and preventing thermal distribution and uniformity by maintaining the flow rate constant. The object is to provide a heater assembly for heating a fluid that can be easily performed.

In order to achieve the above-described object, a heater assembly for heating fluid according to an embodiment of the present invention,

A flow path case in which a heating flow path is formed inside and an inlet port and an outlet port connecting the heating flow path and the outside are formed on one side, and one side opposite to the heating flow path is open; and

a heat plate covering an open surface of the flow path case and on which a heating wire is installed;

Including,

The heating passage has a configuration in which a plurality of sets are arranged adjacently in one direction, and an inlet space for fluid is formed on one side and an outlet space for fluid is formed on the other side based on the one direction.

The inlet port and the outlet port are disposed on both sides of the heating passage and are oriented in one direction.

In the flow path case, an inlet flow path in communication with the inlet port, extending in the one direction and formed on one side of an end far away from the inlet port communicates with the inlet space of the heating flow path, and the outlet. A discharge passage is formed in which a second passage communicates with the port, extends in the one direction, and is formed on one side of an end distant from the discharge port, and communicates with the outlet space of the heating passage.

The first passage and the second passage are characterized in that they are formed at midpoints of the heating passages arranged in the plurality of sets.

A first guide channel and a second guide channel are formed in the inlet and outlet spaces of the heating passage, respectively, with a width gradually decreasing toward both ends in one direction of the plurality of sets of heating passages.

The heating passage has a plurality of passage fins spaced apart from each other along its longitudinal direction.

When viewed in plan view, the plurality of flow path fins include a pair of first flow path fins disposed opposite each other at intervals on both side walls of the heating flow path, and a pair of first flow path fins arranged in the longitudinal direction with respect to the pair of first flow path fins. It is characterized in that second flow path fins arranged adjacent to each other along the heating flow path and disposed between the pair of first flow path fins in the width direction of the heating flow path are alternately arranged along the longitudinal direction.

When viewed in plan view, the plurality of flow path fins are characterized in that they are composed of third flow path fins formed to alternately protrude along the longitudinal direction on both walls of the heating flow path.

According to the heater for heating fluid of the present invention as described above, a heating passage is formed inside, an inlet port and an outlet port are formed on one side to connect the heating passage to the outside, and one side opposite to the heating passage is open. It includes a case and a heat plate that covers an open surface of the flow path case and is installed with a heating wire, wherein the heating flow path has a configuration in which a plurality of sets are arranged adjacently along one direction, and on one side relative to the one direction, the fluid The inlet space is formed with an outlet space for the fluid on the other side, so that the fluid flowing in from the inlet port branches and flows from the inlet space to the plurality of sets of heating passages, then collects in the outlet space and is discharged through the outlet port. Since the fluid moves from the inlet space to the outlet space through multiple paths, temperature control can be easily performed by minimizing flow resistance in the heating passage and preventing local thermal distribution uniformity.

In addition, according to the present invention, the inlet port and the outlet port are respectively disposed on both sides of the heating passage, and are formed toward one direction to match the arrangement direction of the plurality of sets of heating passages, Fluid flowing in through the inlet port may be collected in the inlet space and flow toward the outlet space in a direction perpendicular to the one direction.

In addition, according to the present invention, in the flow path case, a first passage communicating with the inlet port, extending in the one direction, and formed on one side of an end distant from the inlet port communicates with the inlet space of the heating flow path in a state opposite to the other side. An discharge passage is formed in which an introduction passage and a second passage communicating with the outlet port, extending in the one direction and formed on one side of an end distant from the outlet port, communicate with the outlet space of the heating passage while facing the outlet space of the heating passage, Since the first passage can be disposed between both ends in one direction of the plurality of sets of heating passages, the fluid flowing in through the inflow port can branch and enter the plurality of sets of heating passages at a uniform flow rate, thereby causing localized It is possible to prevent thermal imbalance.

In addition, according to the present invention, the first passage and the second passage are formed at the midpoint of the plurality of sets of heating passages, making it possible to distribute and inflow into the plurality of sets of heating passages in a more uniform amount.

In addition, according to the present invention, a first guide channel and a second guide channel are formed in the inlet space and outlet space of the heating passage, respectively, whose width gradually decreases toward both ends in one direction of the plurality of sets of heating passages, The fluid is guided more smoothly and can enter the heating passage.

In addition, according to the present invention, a plurality of flow path fins are arranged to be spaced apart along the longitudinal direction of the heating flow path, so that the water pressure in the heating flow path increases and the flow rate relatively decreases due to the flow path pins, so that the plurality of sets of heating flow paths are As the flow rate of the fluid branched and flowing into each branch is corrected, the flow rate in the area passing through the flow path pin can be maintained uniformly, and the flow rate difference between each heating flow path disappears, thereby eliminating thermal unevenness of the fluid. .

That is, according to the present invention, by adjusting the number of flow fins formed in the plurality of sets of heating passages to differentially correct the flow rate of each branched and flowing fluid, it is possible to maintain the flow rate passing through the heating passages uniformly. .

Additionally, as the flow rate decreases due to the flow path fin, the time the fluid stays in the heater assembly for heating the fluid increases, making it easier to set the desired temperature.

Additionally, according to the present invention, when viewed from a top view, the plurality of flow path fins include a pair of first flow path fins disposed opposite each other at a distance from each other on both side walls of the heating flow path, and the pair of first flow path fins. Second flow path fins arranged adjacent to the fin along the longitudinal direction and disposed between the pair of first flow path fins in the width direction of the heating flow path are alternately arranged along the longitudinal direction, Smooth flow is possible and the effect of maintaining the above-mentioned flow rate can be achieved.

Figure 1a is a perspective view showing an electric heating device according to prior art document 1.
FIG. 1B is a perspective view showing the housing of FIG. 1A.
Figure 2 is a perspective view showing an embodiment of a heater assembly for heating fluid according to the present invention.
Figure 3 is an exploded perspective view of Figure 2.
Figure 4 is a plan view showing a flow path case in a heater assembly for heating fluid according to an embodiment of the present invention.
Figure 5 is a partially enlarged perspective view of Figure 4.
Figure 6 is a plan view showing a flow path case according to another embodiment of the present invention.
Figure 7 is a partially enlarged perspective view of Figure 6.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

As shown in Figures 2 and 3, the heater assembly 1000 for heating fluid according to the present invention has a heating passage 110 formed inside and an inlet port connecting the heating passage 110 and the outside on one side. (120) and an outlet port 130 are formed, a flow path case 100 having an open side facing the heating flow path 110, and a heat in which a heating wire is installed and covers the open side of the flow path case 100. Includes plate 200.

The heater assembly 1000 for heating fluid may further include a housing (not shown) that surrounds the flow path case 100 and the heat plate 200 so that they are not exposed.

In particular, as shown in FIGS. 4 and 5, the heating flow path 110 is composed of a plurality of sets arranged adjacently in one direction with a flow path formed between the adjacent sets, and one side relative to the one direction. A fluid inlet space (S1) is formed on one side, and a fluid outlet space (S2) is formed on the other side.

That is, the fluid flowing in from the inlet port 120 branches and flows from the inlet space S1 through the plurality of sets of heating passages 110, and then gathers in the outlet space S2 to form the outlet port 130. It consists of being discharged through.

According to this configuration, the fluid moves from the inlet space (S1) to the outlet space (S2) through multiple paths, thereby facilitating temperature control by minimizing flow resistance in the heating passage and preventing local thermal distribution. can do.

The heating wire may be installed on the surface or inside the heat plate 200, and a heating member using electrical resistance may be adopted.

Accordingly, since the heat plate 200 comes into direct contact with the fluid in the heating passage 110, there is an advantage in that the fluid can be heated quickly and heat loss is prevented, thereby increasing heating efficiency.

The inlet port 120 and the outlet port 130 are respectively disposed on both sides with the heating flow path 110 in between, and are formed toward the one direction to match the arrangement direction of the plurality of sets of heating flow paths 110. It may be composed of:

According to this configuration, the fluid flowing in through the inlet port 120 gathers in the inlet space (S1) and flows toward the outlet space (S2) in a direction perpendicular to the one direction.

In addition, in the flow path case 100, a first passage 141 communicates with the inlet port 120, extends in the one direction, and is formed on one side of the end far away from the inlet port 120, is connected to the heating flow path 110. ), an introduction flow path 140 that communicates with the inlet space S1 opposite to the inlet space S1, and an introduction channel 140 that communicates with the outlet port 130, extends in the one direction, and is formed on one side of an end far away from the outlet port 130. A discharge passage 150 is formed in which the two passages 151 communicate with the outlet space S2 of the heating passage 110 while facing each other.

According to this configuration, the first passage 141 can be disposed between one end of the plurality of sets of heating passages 110, so that the fluid flowing in through the inlet port 120 flows into the plurality of sets of heating passages. Each branch can enter (110) at a relatively uniform flow rate, thereby preventing local thermal imbalance.

In particular, the first passage 141 and the second passage 151 are formed at the midpoint of the plurality of sets of heating passages 110 arranged along the one direction to provide more uniformity to the plurality of sets of heating passages 110. It becomes possible to distribute and inflow as one quantity.

In the inlet space (S1) and outlet space (S2) of the heating passage 110, a first guide channel (C1) whose width gradually decreases toward both ends in one direction of the plurality of sets of heating passages (110) is provided, and The second guide channels C2 are formed so that the fluid can be guided more smoothly and enter the heating passage 110.
As shown in FIG. 4, the introduction passage 140 and the first guide channel are formed to form the introduction passage 140, the first passage 141, and the first guide channel (C1) extending in one direction. A first separation wall 170 is formed between (C1) extending in one direction from one inner surface of the inside of the flow path case 100, and a discharge flow path 150 extending in one direction, a second passage 151, and In order to form the second guide channel (C2), a second separation wall extending in the one direction from the inner surface of one side of the inside of the flow path case (100) is provided between the discharge flow path (150) and the second guide channel (C2) ( 180) is formed.
That is, the first passage 141 is formed between one end of the first separation wall 170 and the inner surface of the other side inside the flow path case 100, and the second passage 151 is a second separation wall ( It is formed between one end of the 180) and the other inner surface of the flow path case 100.
In addition, the first separation wall 170 and the inner surface of the passage case 100, which face the heating passage 110 and are respectively disposed with the first passage 141 in between, are formed to be inclined with respect to the one direction. 1 The second separation wall 180 and the flow path case 100 are each formed with inclined surfaces 171 and 107, face the heating flow path 110, and are disposed with the second passage 151 between them. On the inner surface, second inclined surfaces 181 and 108 are formed to be inclined in one direction.
Accordingly, a configuration is implemented in which the first guide channel C1 and the second guide channel C2 are each formed in a form whose width gradually decreases toward both ends in one direction of the heating passages 110 arranged in multiple sets.

Meanwhile, it is preferable that a plurality of flow path fins 300 are arranged to be spaced apart from each other along the longitudinal direction of the heating flow path 110.

Of course, the flow path fin 300 may be formed over the entire section along the heating flow path 110, or, as shown, may be formed only in the section that communicates with the inlet space S1 and is perpendicular to the one direction. .

Heat from the heat plate 200 is effectively transferred to the fluid by the flow fins 300, enabling rapid heating.

In addition, as the water pressure within the heating passage 110 increases due to the passage fin 300, the flow rate relatively decreases, thereby increasing the time for the fluid to remain within the heating passage 110, thereby enabling sufficient heat transfer.

Moreover, by adjusting the number of flow path fins 300 formed in the plurality of sets of heating flow paths 110 to differentially correct the flow rate of each branched and flowing fluid, the flow rate passing through the heating flow path 100 can be made uniform. You will be able to maintain it.

That is, the flow rate difference between each heating passage 110 is eliminated by the flow path fin 300, thereby eliminating thermal unevenness of the fluid and making temperature setting easier.

The configuration of the plurality of flow path fins 300 includes, for example, a pair of first flow path fins 310 disposed opposite each other at intervals on both side walls of the heating flow path 110 when viewed in a plan view, and A second flow path fin is disposed adjacent to the pair of first flow path fins 310 along the longitudinal direction and is disposed between the pair of first flow path fins 310 in the width direction of the heating flow path 110. 320 may be arranged alternately along the longitudinal direction.

According to this configuration, smooth flow of fluid is possible and the above-mentioned flow rate control effect can be achieved.

As shown in FIGS. 6 and 7, in another embodiment of the flow path case 100, when viewed in a plan view, the plurality of flow path fins 300 are located on both sides of the heating flow path 110. It may be composed of third flow path fins 330 that are formed to protrude alternately along the longitudinal direction.

The flow path fin 300 may be detachably coupled to the bottom or side of the heating flow path 110 or may be formed integrally with it.

In the drawing, each of the heating passages 110 has a meandering shape, but from the inlet space S1 to the outlet space S2, it can be formed in various shapes such as simply a straight shape or a wave shape, and such a straight passage 110 A plurality of sets of heating passages 110 may be provided by being arranged adjacent to each other up and down.

The embodiments of the present invention are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible within the scope of the following claims.

100... Euro case
110... Heating flow path
120... inlet port
130... outlet port
140... introduced euros
141... 1st passage
150... Discharge Euro
151... Second passage
200...heat plate
300... euro fin
310... 1st euro pin
320... 2nd euro pin
330... 3rd euro pin
1000... Heater assembly for heating fluids
C1... 1st guide channel
C2... 2nd guide channel
S1... Entrance space
S2... exit space

Claims (8)

A flow path case in which a heating flow path is formed inside and an inlet port and an outlet port connecting the heating flow path and the outside are formed on one side, and one side opposite to the heating flow path is open; and
a heat plate covering an open surface of the flow path case and on which a heating wire is installed;
Including,
The heating flow path is composed of a plurality of sets arranged adjacently in one direction with a flow path formed between the adjacent sets, and an inlet space for fluid is formed on one side and an outlet space for fluid is formed on the other side based on the one direction. become,
The inlet port and the outlet port are respectively disposed on both sides of the heating passage and are formed toward the one direction,
In the flow path case, an inlet flow path in communication with the inlet port, extending in the one direction and formed on one side of an end far away from the inlet port communicates with the inlet space of the heating flow path, and the outlet. A discharge passage is formed in communication with the port, extending in the one direction, and a second passage formed on one side of an end distant from the discharge port communicates with the outlet space of the heating passage,
The first passage and the second passage are formed at midpoints of the plurality of heating passages arranged in the one direction,
A first guide channel and a second guide channel are formed in the inlet and outlet spaces of the heating passage, respectively, with the width gradually decreasing toward both ends in one direction of the plurality of sets of heating passages,
To form the introduction flow path, the first passage, and the first guide channel extending in one direction, a first separation wall extending in the one direction from an inner surface of one side of the inside of the flow path case is provided between the introduction flow path and the first guide channel. is formed, and to form the discharge passage extending in one direction, the second passage, and the second guide channel, a second passage extending in the one direction from one inner surface of the inside of the passage case is provided between the discharge passage and the second guide channel. A dividing wall is formed,
The first passage is formed between one-directional end of the first dividing wall and the other inner surface inside the flow path case, and the second passage is formed between one-directional end of the second dividing wall and the other inner surface inside the flow path case, ,
A first inclined surface inclined with respect to the one direction is formed on an inner surface of the first dividing wall and the flow path case, respectively facing the heating flow path and disposed with the first passage in between, and facing the heating flow path and forming the inner surface of the flow path case. A heater assembly for heating a fluid, wherein a second inclined surface inclined with respect to the one direction is formed on an inner surface of the second dividing wall and the flow path case, respectively disposed across the second passage. delete delete delete delete According to paragraph 1,
A plurality of flow path fins are arranged to be spaced apart along the longitudinal direction of the heating flow path. When viewed from a plan view, the plurality of flow path fins are a pair of flow path fins arranged opposite each other at intervals on both walls of the heating flow path. A first flow path fin and a second flow path fin disposed adjacent to the pair of first flow path fins along the longitudinal direction and disposed between the pair of first flow path fins in the width direction of the heating flow path are A heater assembly for heating a fluid, characterized in that it is arranged alternately along the longitudinal direction. delete delete

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