JP2023151209A - Apparatus and method for manufacturing heat exchanger - Google Patents

Abstract

To easily attach headers (21, 22, 24) to a heat transfer tube (13).SOLUTION: A heat exchanger includes headers (21, 22, 24) including insertion holes (112, 42), and a heat transfer tube (13) installed to a fin (16). An apparatus for manufacturing the heat exchanger is equipped with a mechanism for inserting protrusion parts (131) of the heat transfer tube (13) that protrude from the fin (16) into the insertion holes (112, 42) of the headers (21, 22, 24). The mechanism inserts the protrusion parts (131) into the insertion holes (112, 42) with supporting the headers (21, 22, 24) so that an extending direction (V) of the insertion holes (112, 42) is along an inclination direction (W). The inclination direction (W) is a direction inclined with respect to the protrusion direction of the protrusion parts (131).SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a heat exchanger manufacturing apparatus and a heat exchanger manufacturing method.

Patent Document 1 discloses a heat exchanger. The heat exchanger described in Patent Document 1 includes a heat exchange section and a header. The heat exchanger includes fins and heat transfer tubes inserted into the fins. A header is attached to a protruding portion of the heat exchanger tube that protrudes from the fins.

Conventionally, when attaching a header to the protruding part of a heat exchanger tube, the heat exchange part was arranged so that the protruding part of the heat exchanger tube protruded in the horizontal direction, and the insertion hole of the header was inserted in the horizontal direction. The protrusion was inserted into the insertion hole of the header by moving the header horizontally from a state in which the header was arranged so as to extend along the protrusion and horizontally face the protrusion.

Japanese Patent Application Publication No. 2020-201020

However, when the header is attached to the protruding part of the heat exchanger tube, the header is moved horizontally from start to finish, so that the friction force from the header in the same direction (horizontal direction) is applied to the protrusion of the heat exchanger tube. As the frictional force continues to be applied, problems such as deformation of the heat exchanger tube or displacement of the heat exchanger tube in the horizontal direction with respect to the fins may occur due to the frictional force. In order to avoid the occurrence of this problem, a technique that relied on the senses of the operator's skill level was required.

An object of the present disclosure is to enable the header (21, 22, 24) to be easily attached to the heat exchanger tube (13).

The first aspect is directed to a heat exchanger manufacturing apparatus. The heat exchanger includes a header (21, 22, 24) including an insertion hole (112, 42), and a heat transfer tube (13) installed in a fin (16). The heat exchanger manufacturing apparatus inserts a protrusion (131) of the heat exchanger tube (13) that protrudes from the fin (16) into the insertion hole (112, 42) of the header (21, 22, 24). The mechanism is configured to support the header (21, 22, 24) so that the extending direction (V) of the insertion hole (112, 42) is along the inclination direction (W). The protrusion (131) is inserted into the hole (112, 42), and the inclination direction (W) is a direction inclined with respect to the protrusion direction of the protrusion (131).

In the first aspect, the header (21, 22, 24) can be easily attached to the heat exchanger tube (13).

In a second aspect, in the first aspect, the heat exchanger tube (13) is a flat tube, the fin (16) includes a fin groove (17) into which the flat tube is inserted, and the mechanism includes: The protrusion (131) is inserted into the insertion hole (112, 42) from the opening (17a) side of the fin groove (17).

In the second aspect, the header (21, 22, 24) can be easily attached to the flat tube.

In a third aspect, in the first or second aspect, when the mechanism inserts the protrusion (131) into the insertion hole (112, 42) of the header (21, 22, 24), The protrusion (131) is brought into contact with the inner wall surface (a2, a3) of the insertion hole (112, 42).

In the third aspect, when inserting the protrusion (131) into the insertion hole (112, 42), the frictional force in the protrusion direction that acts on the heat exchanger tube (13) can be effectively reduced.

In a fourth aspect, in any one of the first to third aspects, the mechanism inserts the protrusion (131) into the insertion hole (112, 42) from the inclined direction (W) side. .

In the fourth aspect, with the header (21, 22, 24) tilted so that the extending direction (V) of the insertion hole (112, 42) is along the inclination direction (W), the insertion hole (112, 42) The protrusion (131) can be inserted into.

In a fifth aspect, in any one of the first to third aspects, the mechanism is inserted into the insertion hole (112, 42) from a direction perpendicular to the protrusion direction of the protrusion (131). Insert the protrusion (131).

In the fifth aspect, with the header (21, 22, 24) tilted so that the extending direction (V) of the insertion hole (112, 42) is along the inclination direction (W), the insertion hole (112, 42) The protrusion (131) can be inserted into.

In a sixth aspect, in any one of the first to third aspects, the mechanism inserts the protrusion (131) into the insertion hole (112, 42) from the protrusion direction side of the protrusion (131). Insert.

In the sixth aspect, with the header (21, 22, 24) tilted so that the extending direction (V) of the insertion hole (112, 42) is along the inclination direction (W), the insertion hole (112, 42) The protrusion (131) can be inserted into.

In a seventh aspect, in any one of the first to sixth aspects, the mechanism inserts the protrusion (131) into the insertion hole (112, 42), and then inserts the protrusion (131) into the insertion hole (112, 42). Rotate the header (21, 22, 24) against the

In the seventh aspect, after inserting the protrusion (131) into the insertion hole (112, 42), by rotating the header (21, 22, 24) with respect to the protrusion (131), the header (21, 22,24) can improve posture.

In an eighth aspect, in any one of the first to seventh aspects, the heat exchanger tubes (13) are provided in a plurality of stages, and the mechanism is arranged on the side closest to the inclination direction (W) among the plurality of stages. The heat exchanger tube (13) located in the step is inserted into the insertion hole (112, 42) from the protrusion (131).

In the eighth aspect, the headers (21, 22, 24) can be easily attached to the heat exchanger tubes (13) in multiple stages.

A ninth aspect is directed to a method of manufacturing a heat exchanger. The heat exchanger includes a header (21, 22, 24) and heat transfer tubes (13) installed on fins (16). The manufacturing method of the heat exchanger includes inserting the protrusion (131) of the heat exchanger tube (13) that protrudes from the fin (16) into the insertion hole (112, 42) of the header (21, 22, 24). In the insertion step, the header (21, 22, 24) is supported so that the extending direction (V) of the insertion hole (112, 42) is along the inclined direction (W), The protrusion (131) is inserted into the insertion hole (112, 42), and the inclination direction (W) is a direction inclined with respect to the protrusion direction of the protrusion (131).

In the ninth aspect, the header (21, 22, 24) can be easily attached to the heat exchanger tube (13).

FIG. 1 is a perspective view of a heat exchanger according to an embodiment. FIG. 2 is a perspective view of the heat exchange section. FIG. 3 is a perspective view of the header. FIG. 4 is a perspective view of the header. FIG. 5 is a perspective view of the heat exchange section. FIG. 6 is a side view of the heat exchanger manufacturing apparatus. FIG. 7 is a front view of the heat exchanger manufacturing apparatus. FIG. 8 is a plan view of the heat exchanger manufacturing apparatus. FIG. 9 is a perspective view of a heat exchanger manufacturing apparatus. FIG. 10 is a side view showing the header being held by the heat exchanger manufacturing apparatus. FIG. 11 is a block diagram showing the configuration of a heat exchanger manufacturing apparatus. FIG. 12 is an end view showing the procedure for attaching the header to the heat exchange section. FIG. 13 is an end view showing the procedure for attaching the header to the heat exchange section. FIG. 14 is an end view showing the procedure for attaching the header to the heat exchange section. FIGS. 15(a) to 15(c) are perspective views showing the procedure for attaching the header to the heat exchanger. FIGS. 16(a) to 16(c) are perspective views showing a procedure for attaching multiple stages of headers to multiple stages of heat exchange sections. FIGS. 17(a) to 17(c) are end views showing a first modification of the procedure for attaching the header to the heat exchanger. FIGS. 18(a) to 18(c) are end views showing a second modification of the procedure for attaching the header to the heat exchanger. FIGS. 19(a) to 19(b) are end views showing a third modification of the procedure for attaching the header to the heat exchange section.

Embodiments of the present disclosure will be described in detail below with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various changes can be made without departing from the technical idea of the present disclosure. Each drawing is for conceptually explaining the present disclosure, so dimensions, ratios, or numbers may be exaggerated or simplified as necessary to facilitate understanding.

Hereinafter, exemplary embodiments will be described in detail based on the drawings.

<Configuration of heat exchanger>
FIG. 1 is a perspective view of a heat exchanger (100). FIG. 2 is a perspective view of the heat exchange section (10).

The heat exchanger (100) is provided, for example, in an indoor unit or an outdoor unit of an air conditioner. A heat exchanger is a device that condenses or evaporates a refrigerant using air as a cooling or heating source, and is, for example, a component of a refrigerant circuit of a vapor compression type refrigeration device. For example, carbon dioxide refrigerant is used as the refrigerant that circulates in the refrigerant circuit.

As shown in FIG. 1, the heat exchanger (100) includes a heat exchange section (10) that exchanges heat between outdoor air and a refrigerant, and the other end side of the heat exchange section (10) (the heat exchange section shown in FIG. 1). The refrigerant divider (20), header (21), header (22), and one end side of the heat exchanger (10) (right end side of the heat exchanger (100) shown in FIG. ), and a header (24) provided on the left front end side of the In the heat exchanger (100), the refrigerant flow divider (20), header (21), header (22), header (24), and heat exchange section (10) are made of aluminum or aluminum alloy, for example, and each part is made of aluminum or aluminum alloy. The joining is performed, for example, by brazing such as furnace brazing.

The heat exchange section (10) includes a first heat exchange section (11) that constitutes the windward side portion of the heat exchanger (100), and a second heat exchange section (11) that constitutes the leeward side portion of the heat exchanger (100). (12), and multiple rows (for example, two rows) of heat exchange parts (11) adjacent to each other in the passage direction (pipe row direction) of outdoor air generated by driving an outdoor fan (not shown). , (12) are placed. The first heat exchange part (11) includes a first main heat exchange part (11a) that constitutes the upper part of the heat exchanger (100), and a first sub heat exchange part (11a) that constitutes the lower part of the heat exchanger (100). 11b). Further, the second heat exchange section (12) includes a second main heat exchange section (12a) that constitutes the upper part of the heat exchanger (100), and a second sub heat exchange section that constitutes the lower part of the heat exchanger (100). (12b).

As shown in FIG. 2, the heat exchange section (10) includes a plurality of heat exchanger tubes (13) made of, for example, flat tubes, and a plurality of fins (16) made of, for example, insert fins.

The heat transfer tube (13) is made of aluminum or aluminum alloy, for example, and is a flat multi-hole tube having a flat surface (14) serving as a heat transfer surface and a large number of small internal channels (15) through which a refrigerant flows. . The plurality of heat exchanger tubes (13) are arranged at intervals with their flat surfaces (14) facing each other. The plurality of heat exchanger tubes (13) are arranged in multiple rows (for example, two rows) so as to be adjacent to each other in a staggered manner along a direction perpendicular to the flat surface (14). One end of each heat exchanger tube (13) in the longitudinal direction (the left front end of the heat exchange section (10) in FIG. 1) is connected to the header (24), and the other end of each heat exchanger tube (13) (the left front end of the heat exchanger (10) in FIG. The right end portion of the heat exchange section (10) is connected to the header (21) and the header (22).

The fins (16) are made of aluminum or aluminum alloy, for example, and are arranged in plurality at intervals along the longitudinal direction of the heat exchanger tube (13). A plurality of fin grooves (17) are formed in the fin (16). The plurality of fin grooves (17) are arranged along the longitudinal direction of the fin (16). The heat exchanger tube (13) is inserted into the fin groove (17).

As shown in FIG. 1, the refrigerant flow divider (20) is connected between the liquid refrigerant pipe (31) and the lower part of the header (21). The refrigerant flow divider (20) is, for example, a member made of aluminum or an aluminum alloy. The refrigerant flow divider (20) divides the refrigerant flowing in through the liquid refrigerant pipe (31) and guides it to the lower part of the header (21), or combines the refrigerant flowing in through the lower part of the header (21) into the liquid refrigerant pipe. (31).

As shown in FIGS. 1 and 2, the header (21) is provided at the other end (right end) of the first heat exchange section (11) of the heat exchange section (10). The other longitudinal end (right end) of the heat exchanger tube (13) (flat tube) constituting the first heat exchange section (11) is connected to the header (21). The header (21) is a member made of aluminum or aluminum alloy, for example. A gas refrigerant pipe (32) is connected to the upper part of the header (21), and refrigerant can be exchanged between the first main heat exchange section (11a) and the gas refrigerant pipe (32). A refrigerant flow divider (20) is connected to the lower part of the header (21), and refrigerant can be exchanged between the first sub heat exchange section (11b) and the refrigerant flow divider (20).

The header (22) is provided on the other end side (right end side) of the second heat exchange section (12) of the heat exchange section (10). The other end (right end) of the heat exchanger tube (13) constituting the second heat exchange section (12) is connected to the header (22). The header (22) is a member made of aluminum or aluminum alloy, for example. The header (22) enables exchange of refrigerant between the second main heat exchange section (12a) and the second sub heat exchange section (12b).

FIG. 3 is a perspective view of the header (21, 22). As shown in FIG. 3, the header (21, 22) includes a housing (111). The housing (111) is a hollow member, and the header (21, 22) includes a plurality of insertion holes (112). A plurality of insertion holes (112) are formed in the housing (111). The plurality of insertion holes (112) are lined up in a row. The insertion hole (112) communicates the inside of the housing (111) with the outside of the housing (111).

As shown in FIG. 1, the header (24) is provided at one end (front left end) of the heat exchange section (10). One end (front left end) of a heat exchanger tube (13) constituting the heat exchange section (10) is connected to the header (24). The header (24) is a member made of aluminum or aluminum alloy, for example. The header (24) includes one end (left front end) of the heat exchanger tube (13) that constitutes the first heat exchange section (11) and one end (left front end) of the heat exchanger tube (13) that constitutes the second heat exchange section (12). A connecting path is formed for communicating with one end (left front end). Thereby, one end portions (left front end portions) of adjacent heat exchanger tubes (13) communicate with each other. The header (24) allows exchange of refrigerant between the first heat exchange section (11) and the second heat exchange section (12).

FIG. 4 is a perspective view of the header (24). As shown in FIG. 4, the header (24) includes a housing (41). The housing (41) is a hollow member. The header (24) includes a plurality of insertion holes (42). A plurality of insertion holes (42) are formed in the housing (41). The plurality of insertion holes (42) are arranged in two rows in a staggered manner. In this embodiment, the plurality of insertion holes (42) are composed of an insertion hole (42a) provided in the first stage and an insertion hole (42b) provided in the second stage. The entry hole (42) communicates the inside of the casing (41) with the outside of the casing (41).

When the heat exchanger (100) having the above configuration functions as a refrigerant evaporator, the refrigerant flowing from the liquid refrigerant pipe (31) flows into the refrigerant flow divider ( 20) and the lower part of the header (21), it is led to the first sub-heat exchange section (11b). The refrigerant that has passed through the first sub-heat exchange section (11b) is guided to the second sub-heat exchange section (12b) through the lower part of the header (24). The refrigerant that has passed through the second sub heat exchange section (12b) is guided to the second main heat exchange section (12a) through the header (22). The refrigerant that has passed through the second main heat exchange section (12a) is guided to the first main heat exchange section (11a) through the upper part of the header (24). The refrigerant that has passed through the first main heat exchange section (11a) flows out into the gas refrigerant pipe (32) through the upper part of the header (21). During the flow of the refrigerant, the refrigerant evaporates due to heat exchange with outdoor air.

Furthermore, when the heat exchanger (100) functions as a refrigerant radiator, the refrigerant flowing from the gas refrigerant pipe (32) passes through the upper part of the header (21), as shown by the arrows indicating the flow of refrigerant in FIG. , is guided to the first main heat exchange section (11a). The refrigerant that has passed through the first main heat exchange section (11a) is guided to the second main heat exchange section (12a) through the upper part of the header (24). The refrigerant that has passed through the second main heat exchange section (12a) is guided to the second sub heat exchange section (12b) through the header (22). The refrigerant that has passed through the second sub-heat exchange section (12b) is guided to the first sub-heat exchange section (11b) through the lower part of the header (24). The refrigerant that has passed through the first sub-heat exchange section (11b) flows out into the liquid refrigerant pipe (31) through the lower part of the header (21) and the refrigerant divider (20). During the flow of the refrigerant, the refrigerant radiates heat through heat exchange with outdoor air.

Note that in this embodiment, the heat exchange section (10) is composed of two stages of heat exchange sections including a first heat exchange section (11) and a second heat exchange section (12); It may be composed of an exchange section, or it may be composed of three or more stages of heat exchange sections.

<Heat exchange section>
FIG. 5 is a perspective view of a portion of the heat exchange section (10). In FIG. 5, the X-axis direction, Y-axis direction, and Z-axis direction are directions perpendicular to each other.

As shown in FIG. 5, each of the plurality of fins (16) is arranged such that the longitudinal direction of the fin (16) is parallel to the X-axis direction. Each of the plurality of heat exchanger tubes (13) is arranged such that the longitudinal direction of the heat exchanger tube (13) is parallel to the Z-axis direction.

A plurality of fins (16) are lined up along the Z-axis direction, and a plurality of heat exchanger tubes (13) are lined up along the X-axis direction. Each of the plurality of heat exchanger tubes (13) is arranged to cross the plurality of fins (16) in the Z-axis direction. Each of the plurality of heat exchanger tubes (13) is inserted into the fin groove (17) of the fin (16) that it crosses.

The fin groove (17) is a space located inside a portion of the fin (16) that is recessed toward the other side (Y2) in the Y-axis direction. The fin groove (17) includes an opening (17a). The opening (17a) communicates the inside and outside of the fin groove (17) and is located on one side (Y1) of the fin groove (17) in the Y-axis direction. The other side (Y2) in the Y-axis direction of the fin groove (17) is closed and forms the bottom of the fin groove (17). The fin (16) is inserted into the fin groove (17) through the opening (17a).

Each of the plurality of heat exchanger tubes (13) includes a protrusion (131). The protrusion (131) is a portion of the heat exchanger tube (13) that is inserted into the insertion hole (112) (see FIG. 3) of the header (21). In this embodiment, the protrusion (131) is a portion that protrudes in one direction (Z1) in the Z-axis direction from the fin (16, 16a) located furthest in one direction (Z1) in the Z-axis direction. .

<Heat exchanger manufacturing equipment>
The manufacturing apparatus (200) for the heat exchanger (100) will be described with reference to FIGS. 6 to 11. The heat exchanger (100) manufacturing device (200) is a device that performs a process of attaching headers (21, 22, 24) to the heat exchange section (10).

As shown in FIGS. 6 to 9, the heat exchanger manufacturing apparatus (200) includes a first machine (201), a second machine (202), a third machine (203), and a fourth machine (204). ).

A second stand (202) is supported by the first stand (201) so as to be movable along the Y-axis direction (vertical direction). The first stand (201) has a shape extending along the Y-axis direction. On the other side (Z2) of the first stand (201) in the Z-axis direction, a second stand (202) is installed so as to be movable along the Y-axis direction.

A third stand (203) is supported by the second stand (202) so as to be movable along the Z-axis direction (back and forth direction). The second stand (202) has a substantially L-shaped bent shape when viewed from the X-axis direction. The second stand (202) has a plate surface parallel to the X-axis direction and the Z-axis direction, and the third stand (203) has a plate surface parallel to the Z-axis direction on the second stand (202). It is installed so that it can be moved.

A first rotating shaft (205) and a pair of second rotating shafts (206) are rotatably installed on the third stand (203). The first rotation shaft (205) has an axis (205a) extending along the X-axis direction (left-right direction), and rotates around the X-axis about the axis (205a). A first drive source (207) is connected to the first rotation shaft (205) for providing power to the first rotation shaft (205) to rotate the first rotation shaft (205). The first drive source (207) includes, for example, a motor.

Each of the pair of second rotation shafts (206) has an axis (206a) extending along the X-axis direction (left-right direction), and rotates about the axis (206a). The pair of second rotation shafts (206) are arranged at intervals along the X-axis direction. The pair of second rotating shafts (206) are arranged on the other side (Z2) in the Z-axis direction with respect to the first rotating shaft (205).

A belt (208) is wound around the first rotating shaft (205) and the pair of second rotating shafts (206). The first rotating shaft (205) rotates around the axis (205a) due to the power of the first drive source (207), which causes the belt (208) to rotate, and as the belt (208) rotates, a pair of The second rotating shaft (206) rotates around the axis (206a).

As shown in FIGS. 9 and 10, the third stand (203) has a plate surface parallel to the X-axis and the Z-axis, and the third stand (203) has a plate surface parallel to the Z-axis direction with respect to the plate surface of the third stand (203). A fourth unit (204) is arranged on the one direction side (Z1). A pair of second rotating shafts (206) are fixed to the fourth stand (204). One of the pair of second rotation shafts (206) is fixed to one side in the X-axis direction of the fourth table (204), and the other one of the pair of second rotation shafts (206) is fixed to the fourth table (204). It is fixed on the other side in the X-axis direction of the stand (204). The fourth stand (204) rotates together with the pair of second rotating shafts (206).

The fourth stand (204) is provided with an insertion stand (209). The insertion base (209) has a recessed portion (209a) that is recessed to match the shape of the header (21). Insert the header (21) into the recess (209a) so that the opening (b1) of the recess (209a) and the opening (a1) of the header (21) face the same direction (the other direction (Z2) in the Z-axis direction). ) is inserted.

By rotating the first rotation shaft (205) by the first drive source (207) with the header (21) inserted into the recess (209a), the first rotation shaft (205) and the second rotation shaft ( 206), the fourth stand (204), and the insertion stand (209) can be rotated. As a result, the header (21) in the recess (209a) of the insertion table (209) can be rotated to tilt the header (21), for example, as shown in FIG. 15(a).

For example, as shown in FIG. 15(a), the fourth stand (204) has a feature that when the header (21) is tilted, the header (21) comes out of the recess (209a) of the insertion stand (209). A header support member (210) is provided to prevent this. The header support member (210) includes a cylinder (211) and a pressing member (212). The cylinder (211) includes a base (211a) and a piston (211b). The base (211a) is fixed to the insertion table (209). The piston (211b) is supported by the base (211a) so as to be movable along a predetermined direction (G). The predetermined direction (G) is a direction extending from the opening (b1) of the recess (209a) along the bottom (b2). The pressing member (212) is fixed to the piston (211b) and moves along the predetermined direction (G) together with the piston (211b).

With the header (21) inserted into the recess (209a), the cylinder (211) is moved by the pressing member against the header (21) by adjusting the amount of movement of the piston (211b) in the predetermined direction (G). The holding member (212) is arranged so that the holding member (212) faces the opening (b1) of the recess (209a) from the outside. As a result, as shown in FIG. 9, the header (21) is pressed from the outside of the recess (209a) by the pressing member (212), so that the header (21) is pressed down as shown in FIG. 15(a). Even when the header (21) is tilted, the header (21) is prevented from coming out of the recess (209a) of the insertion table (209), and the state in which the header (21) is inserted into the recess (209a) is maintained. . The holding member (212) prevents the insertion hole (112) of the header (21) from being blocked by holding down the portion of the header (21) located between adjacent insertion holes (112). There is.

As shown in FIG. 11, the heat exchanger manufacturing apparatus (200) includes a second drive source (213), a third drive source (214), a storage section (215), and a control section (216). include. The second drive source (213) moves the second platform (202) along the Y-axis direction. The second drive source (213) includes, for example, a ROBO cylinder. The third drive source (214) moves the third stand (203) along the Z-axis direction. The third drive source (214) includes, for example, a ROBO cylinder. The storage unit (215) includes a main storage device (e.g., semiconductor memory) such as ROM (Read Only Memory) and RAM (Random Access Memory), and may further include an auxiliary storage device (e.g., hard disk drive). . The main storage device and/or the auxiliary storage device store various computer programs executed by the control unit (216). The control unit (216) includes a processor such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The control unit (216) controls various components (first drive source (207), second drive source) of the heat exchanger manufacturing apparatus (200) by executing a computer program stored in the storage unit (215). (213), third drive source (214), etc.). A member (insertion stand (209) and header support member (210)) that supports the header (21) described above, a first drive source (207) that rotates the header (21) around the X axis, and a header (21) a second drive source (213) that moves the header (21) along the Y-axis direction; a third drive source (214) that moves the header (21) along the Z-axis direction; The control unit (216) that controls the drive source (214) is an example of the mechanism of the present invention. Similarly to the header (21), the header (22, 24) is also controlled by the first drive source (207) while being supported by the insertion base (209) and the header support member (210). can be rotated around the X-axis by the second drive source (213), can be moved along the Y-axis direction by the third drive source (214), and can be moved along the Z-axis direction by the third drive source (214).

<First example of the procedure for attaching the header to the heat exchanger>
A first example of a procedure in which the heat exchanger manufacturing apparatus (200) attaches the header (21) to the heat exchange section (10) will be described.

As shown in FIGS. 3 and 5, the plurality of insertion holes (112) of the header (21) correspond to the plurality of protrusions (131), respectively. The header (21) is attached to the heat exchanger (10) by inserting the corresponding protrusions (131) into the plurality of insertion holes (112).

The procedure for inserting the protrusion (131a) into the insertion hole (112a) will be explained. The insertion hole (112a) indicates any one of the plurality of insertion holes (112) of the header (21). The protrusion (131a) indicates a protrusion (131) corresponding to the insertion hole (112a) among the plurality of protrusions (131).

Note that in FIGS. 15(a) to 16(c), the rectangular prisms representing the fins (16) are simplified illustrations of a plurality of fins (16) arranged side by side.

As shown in FIGS. 12 and 15(a), the opening (17a) of the fin groove (17) faces upward, and the protrusion direction of the protrusion (131a) is parallel to the horizontal direction. , a heat exchange section (10) is arranged. In other words, the heat exchange part (10) is arranged such that one direction in the Y-axis direction (Y1) is upward, and one direction in the Z-axis direction (Z1) is in the protrusion direction of the protrusion (131a). be done. The protrusion (131a) is fitted with a fin retainer (not shown) to prevent the protrusion (131a) from shifting due to pressure from the header (21) when inserted into the insertion hole (112) of the header (21). The position is fixed using etc.

As shown in FIGS. 12, 13, 15(a), and 15(b), the control unit (216) then controls the second drive source (213) and the third drive source (214). Then, the header (21) is arranged on the inclined direction (W) side with respect to the protruding part (131a), and the protruding part (131a) is inserted into the insertion hole (112a) from the inclined direction (W) side. The inclination direction (W) is a direction inclined with respect to the protrusion direction (Z1) of the protrusion (131a), and is a direction in which the inclination angle (θ) with respect to the protrusion direction (Z1) is an acute angle. In this embodiment, the inclination direction (W) is a direction inclining toward one direction (Y1) (upward side) in the Y-axis direction with respect to the protruding direction (Z1).

In this embodiment, the fins (16) are arranged so that the openings (17a) of the fin grooves (17) face upward. As a result, when the protrusion (131a) is inserted into the insertion hole (112a) from the inclined direction (W) side (upward side), the insertion hole (112a) is inserted from the opening (17a) side of the fin groove (17). ) into which the protrusion (131a) is inserted.

The control unit (216) controls the first drive source (207) to open the insertion hole (112a) from a state where the header (21) is disposed on the inclined direction (W) side with respect to the protrusion (131a). After adjusting the rotation angle of the header (21) so that the extending direction (V) is along the inclination direction (W), the second drive source (213) and the third drive source (214) are controlled to align the inclination direction (W). By moving the header (21) along W), the header (21) is brought close to the protrusion (131a). Thereby, the protrusion (131a) is inserted into the insertion hole (112a) through the opening (a1) of the insertion hole (112a).

The extending direction (V) of the insertion hole (112a) indicates the direction from the opening (a1) of the insertion hole (112a) toward the bottom side of the insertion hole (112a). Furthermore, in this embodiment, moving the header (21) along the inclination direction (W) indicates that the header (21) moves in the opposite direction to the inclination direction (W).

In this embodiment, the header (21) is moved along the inclination direction (W) until the corner (131b) of the protrusion (131a) contacts the first inner wall surface (a2) of the insertion hole (112a). Ru.

As shown in FIGS. 13, 14, 15(b) and 15(c), when the protrusion (131a) contacts the first inner wall surface (a2) of the insertion hole (112a), the control portion (216) controls the first drive source (207) to rotate the header (21) relative to the protrusion (131a). In this case, the header (21) is rotated until the direction (V) in which the insertion hole (112a) extends is parallel to the direction in which the protrusion (131a) protrudes (in this embodiment, the horizontal direction). . That is, the header (21) is rotated so that the inclination angle (θ) of the inclination direction (W) with respect to the protrusion direction (Z1) is 0 degrees. As a result, the header (21) is attached to the protrusion (131a) by inserting most of the protrusion (131a) into the insertion hole (112a).

The header (22) is also attached to the heat exchange section (10) in the same procedure as the header (21).

<Second example of the procedure for attaching the header to the heat exchanger>
A second example of the procedure for mounting the header (24) on the heat exchanger (10) will be described.

As shown in FIG. 4 and FIGS. 16(a) to 16(c), the control unit (216) controls the second drive source (213) and the third drive source (214) to ) by moving the header (24) from the direction side inclined to the protruding direction of the protrusions ( After inserting the first stage protrusion (131, 131c) of the header (24), the first drive source (207) is controlled to rotate the header (21). The second stage protrusion (131, 131d) of the plurality of protrusions (131) is also inserted into each of the plurality of insertion holes (42, 42b). As a result, the header (21) is attached to the heat exchange section (10).

<Effect>
As described above, with the header (21) supported so that the extending direction (V) of the insertion hole (112, 42) is along the inclination direction (W), the protrusion (131) is inserted into the insertion hole (112, 42). is inserted. As a result, the header (21) is inserted in an inclined state relative to the protrusion (131) of the heat exchanger tube (13), so that the protrusion (131) of the heat exchanger tube (13) is inserted into the header (21, 22, 24). By sliding through the insertion holes (112, 42), the horizontal frictional force from the header (21, 22, 24) acting on the protrusion (131) of the heat transfer tube (13) can be reduced. Thereby, it is possible to suppress occurrence of problems such as deformation of the heat exchanger tube (13) due to the frictional force or displacement of the heat exchanger tube (13) in the horizontal direction with respect to the fins (16). As a result, the header (21, 22, 24) can be easily attached to the heat exchanger tube (13). Further, the protrusion (131) is inserted into the insertion hole (112, 42) from the inclined direction (W) side inclined with respect to the protrusion direction of the protrusion (131). As a result, when inserting the protrusion (131) into the insertion hole (112, 42), the protrusion (131) can be inserted diagonally into the insertion hole (112, 42), so that it acts on the heat exchanger tube (13). Frictional force in the protrusion direction can be effectively reduced.

Further, the protrusion (131) is inserted into the insertion hole (112, 42) from the opening (17a) side of the fin groove (17). As a result, when moving the header (21, 22, 24) from the inclined direction (W) side and inserting the protrusion (131) into the insertion hole (112, 42) of the header (21, 22, 24), , the header (21, 22, 24) can be moved in the direction of pushing the heat exchanger tube (13) into the fin groove (17) (downward side). As a result, the header (21, 22, 24) can hold the heat exchanger tube (13) to the back side of the fin groove (17), so the heat exchanger tube (13) can be pushed from the opening (17a) of the fin groove (17). can be prevented from coming off.

Also, when inserting the protrusion (131) into the insertion hole (112, 42) of the header (21, 22, 24), insert the corner (131b) of the protrusion (131) into the first inner part of the insertion hole (112a). Bring it into contact with the wall surface (a2) (see Figure 13). As a result, when inserting the protrusion (131) into the insertion hole (112, 42), the distance to which the header (21, 22, 24) is moved in the horizontal direction (the protrusion direction of the protrusion (131)) is reduced. can be effectively reduced. As a result, the frictional force in the protruding direction (horizontal direction) can be effectively reduced.

Also, after inserting the protrusion (131) into the insertion hole (112, 42) by moving the header (21, 22, 24) along the inclination direction (W), the header Rotate (21,22,24). As a result, after inserting the protrusion (131) into the insertion hole (112, 42), by rotating the header (21, 22, 24) with respect to the protrusion (131), the header (21, 22, 24) ) can be adjusted to the position when attached to the heat exchanger (10).

Note that the operation of attaching the headers (21, 22, 24) to the heat exchange section (10) is performed by the heat exchanger manufacturing apparatus (200), but may also be performed manually by an operator.

Although the embodiments and modified examples have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims (for example, the following (1) ) to (6)). In addition, the above embodiments, modifications, and other embodiments may be combined or replaced as appropriate, as long as the functionality of the object of the present disclosure is not impaired.

<First modification example>
(1) As shown in FIGS. 12 to 14, in this embodiment, when the protrusion (131a) is inserted into the insertion hole (112a) from the inclined direction (W) side, the protrusion (131a) After contacting the first inner wall surface (a2) of (112), the header (21, 22) is rotated relative to the protrusion (131a). However, the present invention is not limited thereto. A first modification of the procedure for mounting the headers (21, 22) on the heat exchanger (10) will be described. As shown in FIGS. 17(a) and 17(b), when the protrusion (131a) is inserted into the insertion hole (112a) from the inclined direction (W) side, the protrusion (131a) is inserted into the insertion hole (112a). ), the header (21, 22) may be rotated relative to the protrusion (131a) while the protrusion (131a) is not in contact with the inner wall surface of the insertion hole (112a). That is, when the protrusion (131a) is inserted into the insertion hole (112a) from the inclination direction (W) side, the protrusion (131a) is in contact with the first inner wall surface (a2) of the insertion hole (112a). The header (21, 22) may be rotated with respect to the protrusion (131a) before. As shown in FIG. 17(b) and FIG. 17(c), after the header (21, 22) is rotated, the header (21, 22) is moved to the other direction side (Z2) in the Z-axis direction. Then, the header (21, 22) is attached to the heat exchange section (10). In addition, regarding the header (24), the protruding part (131) is inserted into the insertion hole (42) of the header (24) from the side inclined to the protruding direction of the protruding part (131), and the protruding part (131) is inserted into the insertion hole (42). The header (24) may be rotated when the protrusion (131) contacts the first inner wall surface (a2) of the insertion hole (42), or the protrusion (131) may contact the inner wall surface of the insertion hole (42) in a non-contact manner. The header (24) may be rotated in this state.

(2) In this embodiment, the heat exchanger tube (13) is a flat tube. However, the present invention is not limited thereto. The heat exchanger tube (13) may be a circular heat exchanger tube installed so as to pass through the fins (16).

(3) In FIG. 5 and FIGS. 12 to 16(c), one of the plurality of protrusions (131) is connected to another protrusion (131). may have.

(4) As shown in FIG. 5 and FIGS. 12 to 16(c), in this embodiment, one direction side (Y1) (upward side) of the Y axis with respect to the protrusion direction of the protrusion (131) Then, the protrusion (131) is inserted into the insertion hole (112, 42) of the header (21, 22, 24). However, the present invention is not limited thereto. The protrusion (131) is inserted into the insertion hole (112, 42) of the header (21, 22, 24) from the other side (Y2) (downward side) of the Y axis with respect to the protrusion direction of the protrusion (131). May be inserted.

(5) In the heat exchange section (10), a heat exchanger tube (13) (flat tube) is arranged between a pair of fins (16), and one side of the heat exchanger tube (13) is the fin of one fin (16). It may have a structure in which the heat transfer tube (13) is inserted into the groove (17), and the other side of the heat exchanger tube (13) is inserted into the fin groove (17) of the other fin (16) (double insertion micro).

(6) As shown in FIG. 12, in this embodiment, when the header (21, 22, 24) is supported in an inclined position, the header (21, 22, 24) is moved in the opposite direction to the inclined direction (W). By being moved toward the lower left in FIG. 12, the protrusion (131) is inserted into the insertion hole (112, 42). The inclined posture is a posture in which the header (21, 22, 24) is inclined such that the direction (V) in which the insertion hole (112, 42) extends is along the inclined direction (W). When the header (21, 22, 24) is in the inclined position, the opening (a1) of the insertion hole (112, 42) of the header (21, 22, 24) faces in the opposite direction to the inclined direction (W). Header (21, 22, 24) is placed. However, the present invention is not limited thereto.

<Second modification example>
A second modification of the procedure for mounting the headers (21, 22, 24) on the heat exchanger (10) will be described. In the second modification, the protrusion (131) is inserted into the insertion hole (112, 42) from the side perpendicular to the protrusion direction of the protrusion (131) (one side (Y1) in the Y-axis direction). Ru. As shown in FIG. 18(a), the header (21, 22, 24) is arranged on one side (Y1) in the Y-axis direction (upward in FIG. 18(a)) with respect to the protrusion (131). Ru. Then, with the headers (21, 22, 24) supported in an inclined position, the headers (21, 22, 24) move toward the other direction (Y2) in the Y-axis direction (downward in FIG. 18(a)). By being moved, the protrusion (131) may be inserted into the insertion hole (112, 42). In other words, the header (21, 22, 24) is moved to the other direction side (Y2) in the Y-axis direction. ,22,24) are moved. When the header (21, 22, 24) is moved to the other side (Y2) (downward) in the Y-axis direction and the protrusion (131) is inserted into the insertion hole (112, 42), the protrusion The portion (131) contacts the second inner wall surface (a3) of the insertion hole (112, 42). The second inner wall surface (a3) is a wall surface on the opening (a1) side of the insertion hole (112, 42). As shown in FIGS. 18(a) to 18(c), when the protrusion (131) contacts the second inner wall surface (a3) of the insertion hole (112, 42), the header (21,22,24) are rotated and the header (21,22,24) is moved to the other direction side (Z2) in the Z-axis direction, so that the header (21,22,24) is attached to the heat exchange section (10). 24) is installed.

<Third modification example>
A third modification of the procedure for mounting the headers (21, 22, 24) on the heat exchanger (10) will be described. In the third modification, the protrusion (131) is inserted into the insertion hole (112, 42) from the protrusion direction side (one side (Z1) in the Z-axis direction) of the protrusion (131). As shown in FIG. 19(a), the header (21, 22, 24) is arranged on one side (Y1) in the Z-axis direction (rightward in FIG. 19(a)) with respect to the protrusion (131). Ru. Then, with the headers (21, 22, 24) supported in an inclined position, the headers (21, 22, 24) move toward the other direction (Y2) in the Z-axis direction (leftward in FIG. 19(a)). By being moved, the protrusion (131) may be inserted into the insertion hole (112, 42). In other words, the header (21, 22, 24) is moved in the other direction in the Z-axis direction, which means that the header (21, 22, 24) is moved along the protrusion direction of the protrusion (131). shows. When the header (21, 22, 24) is moved to the other direction side (Y2) (leftward) in the Z-axis direction and the protrusion (131) is inserted into the insertion hole (112, 42), the protrusion The portion (131) contacts the first inner wall surface (a2) of the insertion hole (112, 42). The first inner wall surface (a2) is a wall surface on the bottom side of the insertion hole (112, 42). As shown in FIGS. 19(a) and 19(b), when the protrusion (131) contacts the first inner wall surface (a2) of the insertion hole (112, 42), the header By rotating the headers (21, 22, 24), the headers (21, 22, 24) are attached to the heat exchange section (10). In the first modification to the third modification, when the header (21, 22, 24) is attached to the heat exchanger tube (13), the header (21, 22, 24) is 24) rotational operation (after the protrusion (131) is inserted into the insertion hole (112, 42), the inclination angle (θ) of the inclination direction (W) with respect to the protrusion direction (Z1) is 0 degrees, By including the rotating action of the header (21, 22, 24), it suppresses the continuous application of horizontal friction force to the heat exchanger tube (13) from beginning to end, and acts on the heat exchanger tube (13). This reduces horizontal frictional force. In addition, in the first modification example (see FIG. 17(b)), the second modification example (see FIG. 18(b)), and the third modification example (see FIG. 19(b)), the insertion hole (112 , 42), and when the header (21, 22, 24) is rotated relative to the protrusion (131), the direction (V) in which the insertion hole (112, 42) extends The header (21, 22, 24) is rotated until the header (21, 22, 24) is parallel to the protrusion direction of the protrusion (131). In addition, in the second modification and the third modification, the protrusion (131) is inserted into the insertion hole (112, 42) of the header (21, 22, 24) as in the first modification. The header (24) may be rotated with the protrusion (131) not in contact with the inner wall surface of the insertion hole (42).

As described above, the present disclosure is useful for a heat exchanger manufacturing apparatus and a heat exchanger manufacturing method.

13 Heat exchanger tube
16 Fin
17 Fin groove part
17a Fin groove opening
21, 22, 24 header
42, 112 Header insertion hole
131 Projection of heat transfer tube
a2 Inner wall surface of insertion hole
W Tilt direction

Claims (9)

A heat exchanger manufacturing apparatus comprising a header (21, 22, 24) including an insertion hole (112, 42) and a heat transfer tube (13) installed in a fin (16),
A mechanism for inserting a protrusion (131) of the heat exchanger tube (13) that protrudes from the fin (16) into the insertion hole (112, 42) of the header (21, 22, 24),
The above-mentioned mechanism supports the above-mentioned header (21, 22, 24) so that the extending direction (V) of the above-mentioned insertion hole (112, 42) is along the inclination direction (W), and the above-mentioned insertion hole (112, 42) ), insert the above protrusion (131) into
The heat exchanger manufacturing apparatus, wherein the inclination direction (W) is a direction inclined with respect to the protrusion direction of the protrusion (131). In claim 1,
The heat exchanger tube (13) is a flat tube,
The fin (16) includes a fin groove (17) into which the flat tube is inserted,
The mechanism is a heat exchanger manufacturing apparatus that inserts the protrusion (131) into the insertion hole (112, 42) from the opening (17a) side of the fin groove (17). In claim 1 or claim 2,
The mechanism is configured such that when inserting the protrusion (131) into the insertion hole (112, 42) of the header (21, 22, 24), the protrusion (131) is inserted into the insertion hole (112, 42). Heat exchanger manufacturing equipment that makes contact with the inner wall surface (a2, a3). In any one of claims 1 to 3,
The mechanism is a heat exchanger manufacturing apparatus that inserts the protrusion (131) into the insertion hole (112, 42) from the inclined direction (W) side. In any one of claims 1 to 3,
The mechanism is a heat exchanger manufacturing apparatus that inserts the protrusion (131) into the insertion hole (112, 42) from a side perpendicular to the direction in which the protrusion (131) protrudes. In any one of claims 1 to 3,
The mechanism is a heat exchanger manufacturing apparatus that inserts the protrusion (131) into the insertion hole (112, 42) from the protrusion direction side of the protrusion (131). In any one of claims 1 to 6,
The mechanism is a heat exchanger that rotates the header (21, 22, 24) relative to the protrusion (131) after inserting the protrusion (131) into the insertion hole (112, 42). Manufacturing equipment. In any one of claims 1 to 7,
The heat exchanger tube (13) is provided in multiple stages,
The mechanism includes a heat exchanger that is inserted into the insertion hole (112, 42) from the protrusion (131) of the heat exchanger tube (13) located at the stage closest to the inclination direction (W) among the plurality of stages. Equipment for manufacturing vessels. A method for manufacturing a heat exchanger comprising a header (21, 22, 24) and a heat exchanger tube (13) installed on a fin (16),
an insertion step of inserting a protrusion (131) of the heat exchanger tube (13) that protrudes from the fin (16) into the insertion hole (112, 42) of the header (21, 22, 24);
In the insertion step, the header (21, 22, 24) is supported so that the extending direction (V) of the insertion hole (112, 42), insert the above protrusion (131) into
The method for manufacturing a heat exchanger, wherein the inclination direction (W) is a direction inclined with respect to the protrusion direction of the protrusion (131).