KR102734898B1 - Heat exchanger and blower module including it - Google Patents

Abstract

The present invention provides a heat exchanger comprising a first header tank (100) having an inflow channel (111), an outflow channel (112) and a plurality of movement channels, a second header tank (200) arranged to face the first header tank (100) and having a plurality of movement channels, and a plurality of microtubes (300) that penetrate and are joined through one surface of the first header tank (100) and the second header tank (200), wherein at least one of the plurality of movement channels has a movement channel having a communicating structure, and the introduced air is directly heat-exchanged with the microtubes (300).

Description

Heat exchanger and blower module including it {Heat exchanger and blower module including it}

The present invention relates to a heat exchanger and a blower module including the same. More specifically, the present invention relates to a circular heat exchanger that omits a fin structure and utilizes a plurality of microtubes, and a blower module including the same.

In general, a heat exchanger is a device that absorbs heat from one environment and releases heat to the other between two environments with a temperature difference. When a heat exchanger absorbs heat from inside the room and releases it to the outside, it functions as a cooling system, and when it absorbs heat from outside and releases it to the inside, it functions as a heating system.

Such heat exchangers are used in automotive HVAC together with blowers. The arrangement of heat exchangers and blowers in such automotive HVAC is described below.

Based on the direction of air flow entering the room through the HVAC, the Sirocco fan mounted on the blower module first draws in the outside and inside air into the HVAC.

In the case of the blower module, it can be formed integrally with the main HVAC part equipped with the heat exchanger and various doors, or it can be configured as a separate type. The sirocco fan structurally can induce air in the axial direction and pressurize and supply the air to the heat exchanger in the circumferential direction. The air introduced from the blower module is supplied to the room through the evaporator and heater through the doors and internal passages.

This structure is also used in roof and rear HVAC, which are placed on the top (ceiling) of the vehicle, or on the side or rear of the rear seats.

In the case of the existing configuration, a complex air flow path (duct) must be added to supply the air drawn in from the blower to the heat exchanger, and optimization for the shape and pressure drop amount is also added so that the air can be supplied evenly to the effective area of the heat exchanger. Due to this, there was a limit to reducing the size of the HVAC and the fan capacity.

Republic of Korea Publication No. 10-2018-0129075.

The purpose of the embodiment is to prevent unnecessary size increase by directly arranging a heat exchanger using a microtube on the outside of a blower fan.

In addition, it aims to increase the efficiency of the heat exchange system by reducing unnecessary flow resistance caused by long ducts and bends.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the description below.

An embodiment of the present invention comprises: a first header tank having an inflow path, an outflow path, and a plurality of movement paths; a second header tank arranged to face the first header tank and having a plurality of movement paths; and a plurality of microtubes penetrating through and joining one surface of the first header tank and the second header tank; wherein at least one of the plurality of movement paths has a movement path having a communicating structure, and the introduced air is directly heat-exchanged with the microtubes.

Preferably, the first header tank and the second header tank may be characterized by having a circular ring structure.

Preferably, the first header tank and the second header tank may be characterized in that they share a rotation axis.

Preferably, a plurality of baffles may be arranged in the movement paths of the first header tank and the second header tank.

Preferably, it may be characterized in that a baffle is arranged between the inlet passage and the outlet passage.

Preferably, the microtubes may be characterized in that they are arranged on a plurality of concentric circles based on a central axis.

Preferably, the microtubes may be characterized in that they are arranged so as to be misaligned from each other in the circumferential direction of the concentric circles.

Preferably, the partition wall dividing the plurality of passages of the second header tank may be characterized in that a plurality of communication holes are arranged.

In addition, a blower module according to another embodiment of the present invention may include a heat exchanger having a cylindrical structure and exchanging heat with outside air using microtubes; a blower disposed inside the heat exchanger and drawing in air from the bottom and moving it toward the heat exchanger; and a duct for discharging air that has passed through the heat exchanger.

Preferably, the duct may have a plurality of discharge ports.

According to an embodiment, there is an effect of increasing heat exchange efficiency and increasing the degree of freedom in size.

In addition, it has the effect of solving the problem of moisture formation that occurs in conventional fin-structured heat exchangers, thereby increasing drainage.

The various advantageous and beneficial advantages and effects of the present invention are not limited to the above-described contents, and will be more easily understood in the course of explaining specific embodiments of the present invention.

Figure 1 is a drawing showing a perspective view of a heat exchanger according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view along the AA` direction of Fig. 1,
Figure 3 is a BB` cross-sectional view of Figure 1,
Figure 4 is the internal structure of the first tank of Figure 1.
Figure 5 is the internal structure of the second tank of Figure 1.
Figure 6 is a drawing showing the movement path of the refrigerant in the heat exchanger.
FIG. 7 is a drawing showing a first embodiment of a blower module, which is another embodiment of the present invention.
Figure 8 is a bottom perspective view of Figure 7,
Fig. 9 is a CC` cross-sectional view of Fig. 7,
Fig. 10 is a second embodiment of a blower module,
Fig. 11 is a third embodiment of a blower module,
Fig. 12 is a fourth embodiment of a blower module.

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

However, the technical idea of the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the components among the embodiments can be selectively combined or substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention can be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, can be interpreted in consideration of the contextual meaning of the relevant technology.

Additionally, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.

In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and/or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

These terms are only intended to distinguish one component from another, and are not intended to limit the nature, order, or sequence of the component.

In addition, when a component is described as being “connected,” “coupled,” or “connected” to another component, it may include not only cases where the component is directly connected, coupled, or connected to the other component, but also cases where the component is “connected,” “coupled,” or “connected” by another component between the component and the other component.

In addition, when described as being formed or arranged “above or below” each component, above or below includes not only the case where the two components are in direct contact with each other, but also the case where one or more other components are formed or arranged between the two components. In addition, when expressed as “above or below,” it can include the meaning of the downward direction as well as the upward direction based on one component.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. Regardless of the drawing symbols, identical or corresponding components will be given the same reference numbers and redundant descriptions thereof will be omitted.

Figures 1 to 12 clearly illustrate only the main features in order to conceptually clearly understand the present invention, and as a result, various modifications of the drawings are expected, and the scope of the present invention need not be limited by specific shapes illustrated in the drawings.

FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A` of FIG. 1, FIG. 3 is a cross-sectional view taken along line B-B` of FIG. 1, FIG. 4 is an internal structure of a first tank of FIG. 1, and FIG. 5 is an internal structure of a second tank of FIG. 1.

Referring to FIGS. 1 to 5, a heat exchanger (1) according to an embodiment of the present invention may include a first header tank (100), a second header tank (200), and a microtube (300).

The first header tank (100) may include an inflow path (111) connected to a refrigerant supply unit (not shown) and an outflow path (112) through which refrigerant that has performed heat exchange with the inflowing outside air flows out.

The first header tank (100) may include a plurality of movement paths. In one embodiment, the first header tank (100) may include a first movement path (110) and a second movement path (130).

The first movement path (110) and the second movement path (130) may exist as separate paths. In one embodiment, the first movement path (110) and the second movement path (130) may be separated as one path by the first partition wall (120). However, this is not limited to this, and they may exist as separate paths.

At this time, at least one of the multiple moving paths can be provided with a connected structure.

In one embodiment, the first movement path (110) and the second movement path (130) are provided in a circular belt structure so that the refrigerant can move through the space inside the path. This is a shape that appears because the first header tank (100) and the second header tank (200) are provided in a belt shape in which the ends of the cylinders are joined.

In the drawing, the first header tank (100) and the second header tank (200) are shown as circular ring structures, but this is not limited to them and various polygonal ring structures may be provided to form a certain space.

As shown in the drawing, the first header tank (100) and the second header tank (200) provided in a circular ring structure can be provided in the same shape sharing a rotation axis.

The second header tank (200) is arranged to face the first header tank (100) and may be provided with a plurality of movement paths. In one embodiment, the movement paths of the second header tank (200) may be arranged in the same shape and number as the movement paths of the first header tank (100).

The third and fourth paths of the second header tank (200) can be partitioned by a second partition wall (220). At this time, a plurality of communication holes (221) can be arranged in the second partition wall (220) to allow the refrigerant of the third path to move to the fourth path.

In one embodiment, a plurality of communication holes (221) may be formed across the entire second partition wall (220) and may be arranged at regular intervals. The shape of the communication holes (221) is not limited and may be modified into various shapes. In addition, the size of the communication holes (221) may be modified into various sizes depending on the pressure of the refrigerant moving through the passage.

The microtube (300) can be connected by penetrating one surface of the first header tank (100) and the second header tank (200). The microtube (300) can move the refrigerant by connecting the first header tank (100) and the second header tank (200) and can exchange heat with the incoming outside air.

In one embodiment, the microtube (300) can be joined to the first header tank (100) and the second header tank (200) through bonding or brazing welding.

Referring to Fig. 3, microtubes (300) can be arranged in multiple concentric circles based on a central axis. At this time, the center of each microtube (300) can be arranged in a concentric circle.

At this time, the microtubes (300) arranged in multiple concentric circles may be arranged so as to be misaligned in the circumferential direction of the concentric circles. The microtubes (300) arranged in the second concentric circle (L2) may be arranged so as to face the gap between the microtubes (300) arranged in the first concentric circle (L1). In addition, the microtubes (300) arranged in the third concentric circle (L3) may be arranged so as to face the gap between the microtubes (300) of the second concentric circle.

This is to increase the efficiency of heat exchange when the outside air flowing into the center of the annular heat exchanger (1) moves toward the heat exchanger (1).

For example, when outside air passes through a microtube (300) arranged in a first concentric circle (L1), it collides with a microtube (300) arranged in a second concentric circle (L2) and moves again. Unlike a heat exchanger (1) provided with a conventional fin structure, this increases the contact time and thus the heat exchange efficiency.

In addition, heat exchangers using conventional fin structures have fins that are bent in an 'S' or 'ㄹ' shape between tubes. At this time, there was a problem that moisture would form in the bending area of the fins, which would reduce heat exchange efficiency.

In the present invention, the conventional fin structure is omitted, thereby improving the moisture formation phenomenon and increasing heat exchange efficiency.

Figure 6 is a drawing showing the movement path of the refrigerant in the heat exchanger (1), and is a drawing showing the movement path of the refrigerant in a 4-pass structure with 2 movement channels.

A plurality of baffles (400) are arranged in the plurality of movement paths of the first header tank (100) and the plurality of movement paths of the second header tank (200) to control the movement path of the refrigerant.

The refrigerant flowing in through the inflow path (111) is rotated clockwise by the first baffle (410) that divides the inflow path (111) and the outflow path (112) to divide the first movement path (110) into the inflow path (111) and the outflow path (112). The first baffle (410) is arranged throughout the first movement path and the second movement path (130) arranged in the first header tank (100) and the third movement path (210) and the fourth movement path (230) arranged in the second header tank (200) to control the flow of the refrigerant.

In addition, the refrigerant flowing in through the inlet passage collides with the second baffle (420) and moves to the second movement passage (130) of the first header tank (100), and collides with the first baffle (410) and is discharged through the outlet passage.

The second baffle (420) may be arranged to close an area of the first movement path (110) of the first header tank (100) and the third movement path (210) and fourth movement path (230) of the second header tank (200), as shown in FIG. 2, so that the refrigerant moves through the second movement path (130).

In Fig. 6, a 4-pass structure of two moving channels is described, but it is not limited thereto, and various pass structures can be implemented depending on the arrangement of multiple bevels (400).

In addition, the first header tank (100) and the second header tank (200), which are components of the present invention, are described as having a two-row structure, but are not limited thereto.

In particular, when installed on the ceiling of a vehicle, the height of the microtube (300) is limited. In this case, the heat exchange efficiency can be increased by increasing the number of columns (the number of moving paths), and the height limitation can be overcome.

Meanwhile, below, a blower module (1a) according to another embodiment of the present invention will be described with reference to the attached drawings. However, descriptions of the same elements as those described in the heat exchanger (1) according to one embodiment of the present invention will be omitted.

FIG. 7 is a drawing showing a first embodiment of a blower module (1a) which is another embodiment of the present invention, FIG. 8 is a lower perspective view of FIG. 7, FIG. 9 is a cross-sectional view of FIG. 7, FIG. 10 is a second embodiment of a blower module (1a), FIG. 11 is a third embodiment of a blower module (1a), and FIG. 12 is a fourth embodiment of a blower module (1a).

The same reference numerals as in Figures 1 to 6 represent the same elements, and a detailed description thereof will be omitted.

Referring to FIGS. 7 to 12, a blower module (1a) according to another embodiment of the present invention may include a heat exchanger (1), a blower (10), and a duct (30).

The heat exchanger (1) is provided with a ring-shaped structure as mentioned above, and the conventional fin structure is omitted and a microtube (300) is applied to improve drainage and increase heat exchange efficiency.

The blower (10) is placed inside the heat exchanger (1) which is formed into a ring structure, and can draw in air from the bottom and move it toward the heat exchanger (1). The structure of the blower (10) is not limited, but can be modified into various structures to draw in air from the bottom and supply outside air to the heat exchanger (1). As an example, a sirocco fan can be used as the blower (10).

The duct (30) can discharge air that has been heat-exchanged through the heat exchanger (1). There is no limitation on the shape of the duct (30) and it can be discharged in various shapes.

In one embodiment, the duct (30) may have multiple outlets (31) and may be arranged in various directions.

As shown in Fig. 7, the discharge ports (31) provided in the duct (30) can be arranged at 180 degrees, and four can be arranged at 90-degree intervals as shown in Fig. 10.

In addition, as shown in Fig. 11, one discharge port (31) can discharge air that has passed through the heat exchanger (1) in all directions of 360 degrees, and as shown in Fig. 12, one area of the discharge port (31) can be bent to control the discharge direction.

In this way, the blower module (1a), which is another embodiment of the present invention, is mounted at a required location so as to freely control the discharge direction of air passing through the heat exchanger (1).

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

The above description is merely an illustrative description of the technical idea of the present invention, and those skilled in the art will appreciate that various modifications, changes, and substitutions may be made without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention but to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

1: Heat exchanger 1a: Blower module
10: Blower 30: Duct
31 : outlet
100: 1st header tank 110: 1st moving path
111: Inflow path 112: Outflow path
120: 1st compartment wall 130: 2nd moving path
200: 2nd header tank 210: 3rd moving path
220: Second compartment wall 221: Flue hole
230: 4th moving euro 300: microtube
400: Bepl 410: 1st Bepl
420: 2nd Bepple

Claims (10)

Heat exchanger (1);
A blower (10) is placed inside the heat exchanger (1) and draws in air from the bottom and moves it toward the heat exchanger (1); and
A duct (30) for discharging air that has passed through the above heat exchanger (1);
, and the blower (10) is surrounded by the heat exchanger (1),
The above heat exchanger (1)
A first header tank (100) having a first channel and a second channel separated by an inflow channel (111) and an outflow channel (112) and a partition wall;
A second header tank (200) is arranged to face the first header tank (100) and has a third channel and a fourth channel separated by a partition wall, and a plurality of communication holes are formed in the partition wall separating the third channel and the fourth channel; and
A plurality of microtubes (300) that penetrate one surface of the first header tank (100) and the second header tank (200) and are connected to directly exchange heat with the incoming air;
, and at least one of the plurality of movement paths has a movement path having a communicating structure, and the first header tank (100) and the second header tank (200) have a circular ring structure, and the first flow path and the third flow path are formed on the outside of the second flow path and the fourth flow path, and a first baffle is arranged between the inflow path and the outflow path of the first header tank and the second header tank to divide the first flow path to the fourth flow path, and a second baffle is arranged to divide the first flow path, the third flow path and the fourth flow path, so that the refrigerant introduced into the inflow path flows along the first flow path to the second baffle and then flows through the microtube to the third flow path, and the refrigerant introduced into the third flow path flows through the communication hole to the fourth flow path and then flows along the microtube to the second flow path, and A blower module in which refrigerant introduced into the second flow path flows along the second flow path to the first baffle and then flows along the microtube to the fourth flow path, refrigerant that has flowed into the fourth flow path flows along the communication hole to the third flow path, and refrigerant introduced into the third flow path flows along the microtube to the first flow path and then flows out through the outflow path. delete In the first paragraph,
A blower module characterized in that the first header tank (100) and the second header tank (200) share a rotation axis. delete delete In the first paragraph,
A blower module characterized in that the above microtubes (300) are arranged in a plurality of concentric circles based on a central axis. In Article 6,
A blower module characterized in that the above microtubes (300) are arranged so as to be misaligned from each other in the circumferential direction of the above concentric circles. delete delete In the first paragraph,
The above duct (30) is a blower module having a plurality of discharge ports (31).

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