JP2021092326A - Heat source machine - Google Patents

Abstract

To provide a heat source machine that can improve convenience when being manufactured and subjected to a maintenance service.SOLUTION: A heat source machine includes multiple heat exchangers 5 (5A-5C) and multiple components, which are arranged in a housing 2. At least one heat exchanger 5 of the multiple heat exchangers 5 is formed into a size not blocking lateral surfaces of the housing 2. A front opening part 6 and a right-side opening part 8 serving as opening parts which are not closed by the heat exchangers 5 are formed on at least two surfaces of the lateral surfaces of the housing 2.SELECTED DRAWING: Figure 2

Description

Embodiments of the present invention relate to a heat source machine.

The refrigeration cycle device circulates refrigerant by connecting a heat source unit, which is also called a refrigerator (condensin unit) or an outdoor unit, with an indoor unit such as a showcase or an air conditioner by a pipe. In this heat source machine, for example, as shown in Patent Document 1, various parts are arranged inside the housing.

Japanese Unexamined Patent Publication No. 2019-7642

By the way, various parts are arranged inside the heat source machine, and among them, there are parts that require regular maintenance, such as a compressor provided with a drive unit.

However, since the space available in the housing is limited, it has been difficult to ensure convenience during manufacturing and maintenance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat source machine capable of enhancing convenience during manufacturing and maintenance.

In the heat source machine of the embodiment, a plurality of heat exchangers and a plurality of parts are arranged in a housing, and at least one of the plurality of heat exchangers has a side surface of the housing. It is formed in a size that does not block, and at least two of the side surfaces of the housing are formed with openings that are not closed by the heat exchanger.

The figure which shows typically the appearance of the heat exchanger in embodiment The figure which shows typically the part arrangement example inside a heat source machine Diagram schematically showing the housing and fan section separated The figure which shows the structural example of the refrigeration cycle schematically The figure which shows an example of the manufacturing process of a heat source machine schematically. The figure which shows typically the mounting mode of a fan section

Hereinafter, embodiments will be described with reference to the drawings.
As shown in FIG. 1, the heat source machine 1 includes a housing 2 having a substantially vertically long rectangular parallelepiped outer shape, and a fan section 3 attached to an upper portion of the housing 2. The housing 2 is provided with columns 4 which are structures for supporting the housing 2 at four corners, and is formed in a substantially L shape in a plan view between the columns 4. Three heat exchangers 5 and one heat exchanger 5 formed linearly in a plan view are arranged.

Hereinafter, of the side surfaces of the heat source machine 1, the upper side shown in FIG. 2 is referred to as the back surface of the heat source machine 1, the left side shown in the drawing is referred to as the left side surface, the right side shown in the drawing is referred to as the right side surface, and the lower side shown in the drawing is referred to as the front surface. It is called. Further, the L-shaped heat exchanger 5 arranged along the left side surface of the heat source machine 1 is also referred to as a heat exchanger 5A for convenience, and is arranged along the back surface from the left side surface side. The heat exchanger 5 is conveniently referred to as a heat exchanger 5B, and the L-shaped heat exchanger 5 arranged along the back surface from the right side is also referred to as a heat exchanger 5C for convenience, along the right side. The linear heat exchanger 5 arranged in the above is also referred to as a heat exchanger 5D and will be described. However, when the description common to each heat exchanger 5A to 5D is given, it is simply referred to as heat exchanger 5 without adding A to D.

Although detailed illustration is omitted, each heat exchanger 5 is of a so-called fin tube type in which a large number of relatively thin metal fins are provided on the surface of the tube through which the refrigerant flows. At this time, as is well known, each heat exchanger 5 exchanges heat with the refrigerant by passing air. In other words, although each heat exchanger 5 forms the outer edge of the housing 2, the outside and the inside of the housing 2 are in communication with each other in order to secure an air passage. Each of these heat exchangers 5 is arranged along the outer edge of the housing 2 in order to efficiently exchange heat, that is, to make good contact with air.

In this embodiment, it is assumed that the heat source unit 1 is used for cooling and air conditioning, the heat exchangers 5A to 5C function as condensers for condensing the refrigerant, and the heat exchanger 5D is condensed. It will function as a supercooler to cool the refrigerant. However, the heat source machine 1 can also be applied to other uses such as cooling of equipment and cooling of articles in showcases.

The heat exchangers 5A to 5C are formed by stacking two unit units of the same shape, which are generally formed in an L shape, in two upper and lower stages and connecting them in series in the flow of the refrigerant. There is. That is, the heat exchangers 5A to 5C are formed in the same shape. Hereinafter, among the parts of the heat exchanger 5 formed in an L shape in a plan view, the part on the relatively long side across the curved corner portion is referred to as a long side for convenience, and is relatively short. The side part is called the short side for convenience.

In the heat exchanger 5A, the tip of the long side of the L-shape is located in the left back corner of the heat source machine 1, and the L-shaped corner is located in the left front corner of the heat source machine 1. The short side of the character is arranged along the left side of the front. That is, the heat exchanger 5A is arranged so that the long side of the L-shape is along almost the entire left side surface of the heat source machine 1. Therefore, the left side surface of the heat source machine 1 and a part of the left side surface of the front surface are closed by the heat exchanger 5A.

Further, in the heat exchanger 5B, in a plan view, the long side of the L-shape is located in the left back corner of the heat source machine 1, and the curved corner of the L-shape is located substantially in the center of the back surface of the heat source machine 1. , The short side portion of the L-shape is arranged toward the inside of the heat source machine 1. That is, in the heat exchanger 5B, the long side of the L-shape is along the left half of the back surface of the heat source machine 1, and the end of the long side of the L-shape is the long side of the L-shape of the heat exchanger 5A. It is arranged so that it is located near the end. Therefore, the substantially left half of the back surface of the heat source machine 1 is in a state of being closed by the heat exchanger 5B.

Further, in the heat exchanger 5C, in a plan view, the long side of the L-shape is located in the right back corner of the heat source machine 1, and the curved corner of the L-shape is located substantially in the center of the back surface of the heat source machine 1. , The short side portion of the L-shape is arranged toward the inside of the heat source machine 1. That is, in the heat exchanger 5C, the long side of the L-shape is along the right half of the back surface of the heat source machine 1, and the short side of the L-shape is parallel to the short side of the L-shape of the heat exchanger 5B. It is arranged in the state of. Therefore, the substantially right half of the back surface of the heat source machine 1 is in a state of being closed by the heat exchanger 5C.

Further, in the plan view, the heat exchanger 5D is arranged so that one end is located in the right back corner of the heat source machine 1 and the other end does not reach the right front corner. That is, the heat exchanger 5C is in a state along the right side surface of the heat source machine 1, and the end on the right back side is the end of the L-shape of the heat exchanger 5C and the end of the long side of the heat exchanger 5A is the L-shape of the heat exchanger 5A. It is arranged in a state where it is located near the end of the long side of. Therefore, the right side surface of the heat source unit 1 is in a state of being closed by the heat exchanger 5D except for a part on the front side.

Further, the height of the heat exchanger 5 is formed to be substantially equal to the height of the housing 2 as shown in FIG. Therefore, in the heat source machine 1, the upper end of each heat exchanger 5 is located in the immediate vicinity of the fan section 3.

By the way, in the state where each heat exchanger 5 is arranged, the left side surface, the back surface and the right side surface of the heat source machine 1 are totally closed, while a part of the left side is excluded from the front surface of the heat source machine 1. A front opening 6 is formed in the area. As shown in front view in FIG. 3, the front opening 6 is closed by the front panel 7 during normal operation, that is, during normal operation, and the front panel 7 is removed during maintenance such as inspection and repair. The inside of the heat source machine 1 will be accessed.

Further, since the heat exchanger 5D arranged on the right side surface is formed in a size that does not reach the entire surface of the housing 2, the right side opening 8 is formed in a part of the right side surface of the heat source machine 1. There is. As shown in the perspective from the back in FIG. 1, the right opening 8 is normally closed by the right panel 9, and the front panel 7 and the right panel 9 are removed during maintenance such as inspection and repair to remove the heat source machine. You will access the inside of 1.

Inside the heat source machine 1 surrounded by each heat exchanger 5, various devices such as devices and pipes constituting the refrigeration cycle are provided. In the case of the present embodiment, as shown in FIG. 4, the heat source machine 1 constitutes a refrigeration cycle device together with the indoor unit 10. Although FIG. 4 shows a configuration example in which one indoor unit 10 is used for simplification of the description, it is also possible to connect a plurality of indoor units 10 to the heat source unit 1.

The indoor unit 10 includes an expander 10a, an indoor heat exchanger 10b, an indoor blower fan 10c, an indoor control unit 10d, and the like. In the case of the present embodiment, the indoor heat exchanger 10b functions as an evaporator that evaporates the refrigerant decompressed by the expander 10a. However, the configuration of the indoor unit 10 is an example, and the present invention is not limited to this.

In the heat source machine 1, heat exchangers 5A to 5C as condensers are connected in parallel in the flow of the refrigerant, and are connected to the branch pipe 11 on the inlet side. At this time, the refrigerant branched by the branch pipe 11 flows into the heat exchangers 5A to 5C formed in the same shape substantially evenly. Further, the heat exchangers 5A to 5C are connected to the liquid receiver 13 on a one-to-one basis via a connecting pipe 12 on the outlet side of the refrigerant.

The liquid receiver 13 is connected to the merging pipe 14 on the outlet side of the refrigerant. Each liquid receiver 13 is formed in a substantially cylindrical shape, and the refrigerant inlet is provided on the upper side in the installed state, and the refrigerant outlet is provided on the lower side than the inlet.

As a result, even if the refrigerant sent from the heat exchanger 5 to the receiver 13 is in a gas-liquid mixed state, the refrigerant flowing into the receiver 13 is gas-liquid separated by gravity, and the refrigerant in a liquid state is separated. Outflows to the merging pipe 14. Further, by providing the liquid receiver 13 on a one-to-one basis with respect to the heat exchangers 5A to 5C, each liquid receiver 13 can be miniaturized, and the heat source machine 1 can be arranged inside. The degree of freedom can be increased.

The refrigerant flowing out of the liquid receiver 13 merges in the merging pipe 14, passes through the heat exchanger 5D as a supercooler, and is conveyed to the indoor unit 10 by the feed pipe 15. As a result, the refrigerant can be conveyed to the indoor unit 10 in a liquid state. Then, the refrigerant conveyed to the indoor unit 10 evaporates in the indoor heat exchanger 10b and is returned to the heat source unit 1 through the return pipe 16.

The refrigerant returned to the heat source machine 1 passes through the accumulator 17, the compressor 18, and the oil separator 19 provided in the heat source machine 1, and then passes through the branch pipe 11 again to the heat exchangers 5A to 5C. Inflow. The refrigeration cycle device having such a configuration is controlled by the control unit 20.

By the way, as shown in FIG. 2, these parts are arranged at predetermined positions inside the housing 2. The arrangement shown in FIG. 2 is an example, but the accumulator 17 is arranged on the heat exchanger 5D side, and the two compressors 18 are arranged on the front opening 6 side. The accumulator 17 and the compressor 18 are parts that require regular maintenance, and the compressor 18 is a part that becomes a noise source during operation. Further, the control unit 20 is a component that is highly likely to be used during maintenance.

The accumulator 17 is located near the right opening 8 at a position where the linear heat exchanger 5D and the long side of the heat exchanger 5C are enclosed in only two directions. Further, the compressor 18 is located at a position away from each heat exchanger 5 and is arranged on the front opening 6 side which is closed by the front panel 7 during operation. Further, the compressor 18 is arranged at a position covered by the protective cover 21 after installation. Further, each liquid receiver 13 is attached to a stay 22 whose one is fixed and extends to the tip end side of the short side of the L-shape of the heat exchanger 5.

As shown in FIG. 3, a fan section 3 composed of a base plate 3a and a fan body 3b is placed on the upper portion of the housing 2. The fan main body 3b is arranged so as to blow out air toward the upper side of the heat source machine 1. Therefore, when the fan body 3b is driven, air is sucked into the housing 2 via the heat exchanger 5, and the air is discharged above the heat source machine 1 via the fan section 3. Further, the base plate 3a is a member for holding the fan main body 3b, forming an outlet for blowing out air, and fixing to the housing 2.

The fan section 3 has a relatively short dimension in the height direction in order to reduce the size of the heat source machine 1, and the fan main body 3b is provided so as to project downward from the base plate 3a. However, the portion protruding downward from the base plate 3a is located in the space near the center where the heat exchanger 5 is not arranged in FIG. 2 when the fan section 3 is attached to the housing 2. Therefore, if the fan section 3 is arranged at a normal position, the downwardly protruding portion does not come into contact with the heat exchanger 5 or other parts.

Further, at the lower part of the fan section 3, a plurality of screws 3c for attaching to the housing 2 are provided so as to project downward from the base plate 3a. Since this screw 3c is for attaching the fan section 3 to the frame portion of the housing 2, if the fan section 3 is arranged at a normal position, it will come into contact with the heat exchanger 5 and other parts. There is no.

Further, as will be described in detail later, as shown in FIG. 3, the housing 2 has two guides protruding upward from the upper end of the housing 2 by extending the pillars 4 on the right back and the left back upward. A support column 23 is provided. That is, the housing 2 is provided with guide columns 23 at two of the four corners in a plan view. At this time, each guide support column 23 is provided at two locations on the same side out of the four sides in a plan view, and at two locations on both ends of the same side in the present embodiment. The guide support column 23 is formed in a so-called L-angle shape that is L-shaped in a plan view, and performs positioning of the fan section 3 and guidance at the time of attachment.

As shown in FIG. 5, the housing 2 and the fan section 3 are each manufactured in a separate process and then assembled in an assembly process. By performing this separate process, a heat source machine 1 in which the fan body 3b, which is a rotating body, and other parts are arranged in the vicinity of each other in order to save space can be manufactured while ensuring the quality. Can be done.

Next, the action and effect of the above configuration will be described.
As described above, by manufacturing and assembling the housing 2 and the fan section 3 in separate processes, it is possible to save space, but the heat source machine 1 generally has a housing as described above. A heat exchanger 5 having a height equal to 2 is arranged on the outer edge thereof. Further, the fan section 3 is provided with screws 3c and the like for attaching to the housing 2 as described above, and is also provided with parts such as a fan body 3b protruding downward from the base plate 3a.

In this case, if the position of the fan section 3 is displaced when the fan section 3 is attached, the heat exchanger 5 will be damaged. Further, some heat source machines 1 have a height exceeding the height of a person, and since the fan section 3 itself is formed to have a size that covers the entire upper surface of the housing 2, the fan section 3 is provided. When installing, it is necessary to install it carefully so as not to come into contact with the heat exchanger 5, and a large amount of labor is required, such as requiring a plurality of people for positioning and installation work.
Therefore, in the present embodiment, the fan section 3 can be efficiently attached.

Specifically, as shown in FIG. 6, in the housing 2, the columns 4 of the housing 2 are extended to the left back and the right back of the four corners in a plan view, and the upper end of the housing 2 is extended. Two guide columns 23 are provided so as to project upward. In this case, although the guide columns 23 project upward from the housing 2, there are no structures such as beams between the guide columns 23, and at the time of manufacture, access to the inside of the housing 2 from all sides in a plan view is provided. For example, the parts of the suspended load can be carried in and attached. In other words, it is suppressed that the work efficiency is lowered by providing the guide support column 23.

Then, at the time of assembly, the fan section 3 can be positioned in the front-rear direction and the left-right direction of the housing 2 by bringing the fan section 3 into contact with the two guide columns 23, respectively. Since the guide column 23 is naturally provided to fix the fan section 3 in the correct position, if the fan section 3 is in contact with the guide column 23, the fan section 3 is in the correct position, that is, Is positioned so that the screw 3c and the fan body 3b do not collide with other parts including the heat exchanger 5 even when lowered.

Therefore, if the fan section 3 is lowered while being in contact with the guide support column 23, the fan section book is guided by the guide support column 23 and is lowered to a normal position. That is, the guide support column 23 can guide the fan section 3 to a regular position.

As described above, in the heat source machine 1 including the housing 2, the base plate 3a, and the fan body 3b, and the fan section 3 attached to the upper part of the housing 2 so as to cover the upper surface of the housing 2, the housing The fan section 3 can be efficiently attached by providing the guide support column 23 for positioning the fan section 3 by projecting upward from the upper end of the body 2 and contacting the fan section 3.

At this time, the guide columns 23 are provided at two positions on the same side of the four sides in a plan view. In other words, the guide columns 23 are not provided on opposite sides such as the two sides on the front side and the back side. However, a state in which the guide columns 23 are provided offset from each side to the outside or the inside, and a virtual line connecting the two guide columns 23 are parallel along one side of the heat source machine 1. The states shall also be included on the same side. Depending on the viewpoint, the left back is on the left side and the right back is on the right side, but in the present embodiment, if the guide support column 23 is located on any one side in the plan view, that side is the same side. It is called.

As a result, the fan section 3 can be positioned by the work of bringing the fan section 3 into contact with the guide column 23 and lowering it in that state, and the work efficiency when attaching the fan section 3 can be improved. .. That is, the fan section 3 can be efficiently attached.

Further, the guide columns 23 are provided at two of the four corners in a plan view. For example, in the present embodiment, the guide columns 23 are provided at two corners, the left back and the right back, which are both ends of the same side on the back side. As a result, the distance between the guide columns 23 becomes wide, and when the fan sections 3 come into contact with each other, it is possible to prevent the fan sections 3 from tilting with respect to the housing 2 in a plan view.

Further, the fan section 3 can be brought into contact with the guide column 23 by sliding the fan section 3 from the side facing the guide column 23 in a floating state, so that the fan section 3 can be easily positioned. it can.

Further, the guide support column 23 is formed by extending the columns 4 provided at the four corners of the housing 2 in a plan view to the upper side of the upper end of the housing 2. As a result, the guide support column 23 can be provided without providing individual parts. Further, the guide support column 23 itself can be provided at an accurate position. However, it is of course possible to provide a guide support column 23 as a separate member at the upper end of the support column 4. Further, the guide support column 23 may be configured to extend laterally from the support column 4.

Further, as in the present embodiment, the guide column 23 is formed in an L-shaped so-called L-angle shape in a plan view. Therefore, for example, in the present embodiment, when the fan section 3 is slid from the front side and brought into contact with the guide support column 23, the guide support column 23 is formed in an L angle shape, so that the contacted fan section 3 is brought into contact with the fan section 3. Is prevented from shifting in the left-right direction. That is, the guide column 23 can simultaneously position the fan section 3 in the front-rear direction and the left-right direction.

Further, since the fan section 3 can be attached efficiently and easily as described above, positioning can be performed by, for example, sliding the fan section 3 and bringing it into contact with the guide support column 23. Therefore, it is possible for one worker to perform the work, and the work efficiency can be greatly improved.

Further, it is manufactured in a step of manufacturing a housing 2 having a guide support column 23 projecting upward from the upper end, a step of manufacturing a fan section 3 having a fan body 3b in a separate process from the housing 2, and a separate process. The same effect as the above-mentioned heat source machine 1 can be obtained, for example, the fan section 3 can be efficiently attached by the manufacturing method of the heat source machine 1 including the step of assembling the housing 2 and the fan section 3. ..

However, the configuration of the heat exchanger 5 shown here is an example. For example, a plurality of linear heat exchangers 5 may be arranged along the outer line of the heat source machine 1, or a C-shaped heat exchanger 5 may be arranged in a plan view. And L-shaped or linear heat exchangers 5 are arranged, and those having different numbers and shapes can be adopted. Even in that case, the same effect as that of the embodiment can be obtained, such that the fan section 3 can be efficiently attached.
Further, according to the heat source machine 1 and the manufacturing method of the heat source machine 1 of the present embodiment, the following problems can also be solved.

As described above, the heat source machine 1 improves the heat exchange performance by arranging the heat exchanger 5 along the outside line. By the way, various parts are arranged inside the heat source machine 1, and among them, there are parts that require regular maintenance, such as a compressor 18. However, since the space available in the housing 2 is limited, it has been difficult to ensure convenience during maintenance and manufacturing.

Therefore, the heat source machine 1 is provided with L-shaped heat exchangers 5A to C and linear heat exchangers 5D, and each heat exchanger 5 is arranged along the outer edges of the two sides of the heat source machine 1. The linear heat exchanger 5D has a size that does not completely block one surface of the heat source machine 1. That is, in the heat source machine 1, at least one of the plurality of heat exchangers 5A to 5C, the heat exchanger 5C is formed in a size that does not block the side surface of the housing 2. A front opening 6 and a right opening 8, which are openings not closed by the heat exchanger 5, are formed on at least two of the side surfaces. As a result, it is possible to access the inside from two directions, and it is possible to secure convenience and improve convenience at the time of maintenance and manufacturing.

Further, in the present embodiment, the heat exchangers 5A to C are arranged along the left side surface and the back surface, and the heat exchanger 5D is arranged along the rear side of the right side surface, whereby the front opening 6 and the right side opening are opened. A large opening is formed in which the portion 8 is connected to the portion 8. As a result, the opening portion that enables access to the inside is further enlarged, and convenience during maintenance and manufacturing can be further improved.

Further, in the present embodiment, parts to be maintained, such as a compressor 18 that may be repaired or replaced, and a control unit 20 that is likely to be used during maintenance, are, for example, a front opening 6. It is arranged on the side where the opening such as is formed. As a result, it is possible to efficiently repair or replace parts that require maintenance. Here, the vicinity means a position where work can be performed by removing the panel.

In addition, parts that require maintenance, such as the compressor 18, which is a noise source, are arranged near the front opening 6, that is, at a position away from the heat exchanger 5. As a result, the noise source is located away from the heat exchanger 5 where the sound easily leaks because the noise source communicates with the outside and the inside of the heat source machine 1, and the noise during operation can be suppressed.

At this time, the front opening 6 is closed by the front panel 7 during normal operation. Further, in the present embodiment, the compressor 18 is covered with a protective cover 21. Therefore, the noise during operation can be further reduced. However, the parts that require maintenance and the parts that become noise sources shown here are examples, and other parts may be placed near the opening or at a position away from the heat exchanger 5. Can be done.

In the embodiment, an example in which the heat source unit 1 is used as a so-called refrigerator (condensing unit) for cooling air conditioning or equipment requiring cooling has been shown, but a cooling (cooling) operation is performed by providing a three-way valve or the like that changes the flow of the refrigerant. It can also be used for a so-called heat source machine 1 capable of heating (heating) operation.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

In the drawing, 1 is a heat source machine, 2 is a housing, 3 is a fan section, 3a is a base plate, 3b is a fan body, 3c is a screw, 4 is a support, 5 is a heat exchanger, and 6 is a front opening (opening). ), 8 is the right opening (opening), 17 is the accumulator (part), 18 is the compressor (part), 20 is the control unit (part), 21 is the protective cover, and 23 is the guide support.

Claims (4)

A heat source machine in which multiple heat exchangers and multiple parts are arranged in a housing.
At least one of the plurality of heat exchangers is formed in a size that does not block the side surface of the housing.
A heat source machine in which openings that are not closed by the heat exchanger are formed on at least two of the side surfaces of the housing. The heat source machine according to claim 1, wherein a component to be maintained among the plurality of the components is arranged on the side where the opening is formed. A panel that normally closes the opening is provided.
The heat source machine according to claim 1 or 2, wherein the noise source component among the plurality of components is arranged on the side where the opening closed by the panel is formed. The heat source machine according to claim 3, further comprising a protective cover for covering a component that becomes a noise source among the plurality of the parts.

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