JP2008267724A - Heat pump equipment - Google Patents

Abstract

In a case where a plurality of heat pump devices are installed in a concentrated manner, the concentration and operability of factory piping are simultaneously improved, and effective use of energy and improvement of workability are simultaneously achieved.
An inlet / outlet pipe joint 2 is installed on the left and right of a heat pump device 1. Alternatively, the heat exchanger 6 is disposed in the vicinity of one of the left and right side surfaces adjacent to the side surface on which the operation unit 3a is installed, the compressor 5 is disposed in the vicinity of the other side surface, and the inlet / outlet pipe joint 2 is connected to one side surface. The first heat pump device 1A and the second heat pump device 1B installed in the compressor 1, the heat exchanger 6, the refrigerant circuit, and the inlet / outlet pipe joint 2 constituting the second heat pump device 1B are The heat pump devices 1A are arranged in a mode in which they are rotated by approximately 180 degrees with respect to the normal passing through the center of the bottom surface of the first heat pump device, and the first and second heat pump devices 1A and 1B have an inlet / outlet pipe joint 2. At least one set is placed with the sides facing each other.
[Selection] Figure 1

Description

  The present invention relates to a heat pump apparatus (including a refrigerator) for cooling or heating a heat medium.

  A conventional refrigerator or heat pump device has, for example, a mechanism for cooling or heating a liquid heat medium such as cooling water or brine, and at least the same as an inlet pipe joint for introducing the heat medium into the device. It has an outlet piping joint for discharging. In addition, pipes installed outside the apparatus are connected to these entrance / exit pipe joints, and the heat medium is transported to a desired place for use in air conditioning, equipment cooling / heating, and heating / cooling processing. Such a conventional refrigerator or heat pump device is generally called a chilling unit, a chiller, a heat pump chiller, or the like. And such an apparatus is disclosed by patent document 1, for example. Further, for example, Patent Document 2 discloses an efficient arrangement of factory piping relating to this type of apparatus.

JP 2003-56930 A JP 2006-38323 A

When heating / cooling and transporting a heat medium that exceeds the capacity of one device using the above device, install multiple devices of the same model or the same model with different capacities. Pipes for transporting the heat medium are joined to each device, and each pipe is joined with a pipe joint, etc., and the heat medium is transported to a distance by consolidating the pipes into one or less than the number of installed equipment. Sometimes.
For example, FIG. 6 is a schematic view of an example in which four identical devices are intensively installed as viewed from above, and shows the case where the outer shape of each device forms a generally hexahedral shape. The heat pump device 1 is provided with an operation unit 3a for controlling the operation of the device on one side surface. FIG. 7 shows a schematic diagram of the apparatus with the side surface on which the operation unit 3a is installed facing the front. Hereinafter, a side surface on which the operation unit 3a is installed is referred to as an operation surface 3. The size of the device is mostly about 2.4m in height, 2m in width, and 2m in depth due to the loading restrictions of transport trucks, but it is much longer than 6m in the depth direction or width direction, or 1m in total. There are also:

In this example, the inlet / outlet pipe joint 2 composed of the inlet pipe joint 2a and the outlet pipe joint 2b is disposed on the left side surface adjacent to the operation surface 3, but in addition to the right side surface, the rear surface, and the front side surface. In some cases, an inlet / outlet pipe joint 2 is installed in the door.
In general, the position of the inlet / outlet pipe joint 2 depends on the arrangement of components in the apparatus, and is often installed near the position of the mechanism for heating and cooling the heat medium. For example, in the case of an apparatus as described in Patent Document 1, generally, a refrigerant is circulated by a compressor, the refrigerant is heated or cooled mainly by heat exchange with air, and the heat medium is exchanged by heat exchange between the heat medium and the refrigerant. It is heated or cooled, and a plate heat exchanger is often used for heat exchange with the heat medium. The approximate size of the plate heat exchanger is about 400 mm deep, 500 mm wide, and 700 mm high. The plate heat exchanger and the inlet / outlet pipe joint 2 are connected by piping inside the apparatus, and the heat medium is transported inside the apparatus. In this case, from the two viewpoints of reducing heat loss and cost, it is desirable to connect the inlet / outlet pipe joint 2 and the heat exchanger with as short a pipe as possible. Therefore, it is efficient to position the inlet / outlet pipe joint 2 on the side surface close to the heat exchange mechanism. For example, in the case of FIG. 6 and FIG. 7, the heat exchanger is installed on the left hand, and the compressor, accumulator, subcool circuit, etc. When installed on the right hand, etc., the overall weight balance is good, and a device with good thermal efficiency and cost performance can be obtained.

In addition, although the inlet / outlet pipe joint 2 can be installed on the operation surface 3, if it is installed on the operation surface 3, the factory piping 4 is installed in the vicinity of the operation surface, which is obstructive during operation. No inlet / outlet pipe joint is installed on surface 3. Further, although the inlet / outlet pipe joint 2 can be installed also on the side surface (rear surface) behind the operation surface 3, it is the side surface farthest from the operation unit 3a, and it takes time to check the apparatus. Therefore, in general, it is desirable to install the inlet / outlet pipe joint 2 on the right or left side surface adjacent to the operation surface 3.
Even when a plurality of apparatuses 1 are installed intensively, in order to reduce heat loss, it is important to shorten the heat medium transport pipe outside the apparatus, that is, the factory pipe 4 as much as possible. For example, as shown in FIG. Factory piping 4 can be shortened by installing the two devices by turning them 180 degrees.

If each device 1 is installed linearly in the depth direction, the piping length of the factory piping can be easily extended by the depth of the device and the grace interval between the devices. Loss due to heat exchange from the air to the air increases and is wasted. If the pipes are arranged linearly in the horizontal direction, it is obstructive to have pipes near the operation surface 3. Therefore, it is necessary to collect the factory pipes on the rear side. It is necessary to bend 90 degrees to the side, which increases the cost of factory piping.
Thus, in the case where a plurality of devices 1 are arranged in a concentrated manner, if about half of the devices are inverted by 180 degrees and installed as shown in FIG. Therefore, the cost can be reduced because the heat loss is small and the bent portion of the pipe can be configured. However, since the operation part 3a of each apparatus 1 is installed apart, there is a problem that it takes time and effort for operation and maintenance. Further, if the operation units 3a are arranged so as to be aggregated, the pipe length becomes longer, it becomes necessary to bend and install the pipes, the piping aggregation structure becomes complicated, and heat loss and piping cost increase. There was a problem.

Therefore, in the case where a plurality of devices 1 are intensively arranged,
(1) The number of bent parts of the pipe is small, and it is easy to collect the pipe.
(2) Short piping length and low heat loss.
(3) The operation unit of each device is arranged as close as possible and easy to operate and maintain.
It is important to have a device structure that satisfies the above three points simultaneously. However, in the conventional heat pump apparatus, since the inlet / outlet pipe joint 2 is installed on one side, it is impossible to satisfy the above three points simultaneously.

  The heat pump device of the present invention comprises at least a mechanism for heating or cooling the heat medium, an inlet pipe joint for introducing the heat medium into the apparatus, and an outlet pipe joint for discharging the heat medium to the outside of the apparatus. In the heat pump apparatus, a plurality of the inlet pipe joints or outlet pipe joints are installed. The outer shape of the device has at least a bottom surface and a plurality of side surfaces, and at least one of the inlet pipe joint and the outlet pipe joint is installed on two or more of the side faces. Is preferred. In particular, the outer shape of the device has a substantially hexahedron shape, a device operation unit is installed on one of the side surfaces, and the inlet pipe joint is provided on both right and left side surfaces adjacent to the side surface on which the device operation unit is installed. It is preferable to install at least one outlet pipe joint. A plurality of the heat pump devices are arranged with the side surfaces having the inlet pipe joint or the outlet pipe joint facing each other.

  The heat pump device of the present invention includes at least a compressor that compresses the refrigerant, a heat exchanger that exchanges heat with the refrigerant to heat or cool the heat medium, and a refrigerant circuit that connects the compressor and the heat exchanger. And a substantially hexahedron-shaped heat pump apparatus having an inlet pipe joint for introducing the heat medium into the apparatus and an outlet pipe joint for discharging the heat medium to the outside of the apparatus. The heat exchanger is arranged in the vicinity of one side surface of the left and right side surfaces adjacent to the side surface where the device operation unit is installed, and the other side surface of the left and right side surfaces adjacent to the side surface where the device operation unit is installed The compressor is arranged in the vicinity, and the inlet pipe joint and the outlet pipe joint are installed on the one side surface. Furthermore, the apparatus includes a first heat pump device and a second heat pump device which are devices of this aspect, and the second heat pump device includes a compressor, a heat exchanger, a refrigerant circuit, an inlet pipe joint, and an outlet that constitute the second heat pump device. Piping joints are arranged in a manner in which those of the first heat pump device are rotated by approximately 180 degrees with respect to the normal passing through the center of the bottom surface of the first heat pump device, and the first and second heat pump devices are arranged , At least one set is arranged with the side faces having the inlet / outlet pipe joints facing each other.

  In the case where a plurality of devices are intensively installed, the heat pump device can configure a factory pipe for transporting a heat medium with a small bending portion and a short pipe length, and the operation unit of each device can be provided. It becomes possible to arrange it near. Therefore, it leads to cost reduction of factory piping, suppression of heat loss from factory piping during transportation of the heat medium, and improvement of operation and maintenance work efficiency.

Embodiment 1 FIG.
FIG. 1 is a front view of a heat pump device 1 according to Embodiment 1 of the present invention, and is a view partially showing an apparatus arranged inside. As shown in FIG. 1, an inlet / outlet pipe joint 2 (outlet pipe joint) for taking in and out the heat medium on the left and right side surfaces of the side face (operating face) 3 having an apparatus operating portion (hereinafter referred to as an operating portion) 3 a. 2a, using a device provided with an inlet pipe joint 2b), if a plurality of devices are intensively installed as shown in FIG. 2, the bent part of the factory pipe for transporting the heat medium is reduced, and the pipe length is reduced. It is short, and it becomes possible to arrange the operation units of the respective devices close to each other.
The apparatus 1 includes a heat exchanger 6 that is a mechanism for exchanging heat between the heat medium and the refrigerant, as shown by a dotted line, for example, and a compressor used for a circuit that heats or cools the refrigerant. 5, a refrigerant circuit 7 including a pipe connecting them, a heat medium pipe 8 in the apparatus 1 connecting the inlet / outlet pipe joint 2 and the heat exchanger 6, and the like are arranged. However, in the first embodiment, the arrangement of these devices is not limited to the mode shown in FIG.

Example 1.
FIG. 1 is a front view of the apparatus 1 according to the first embodiment. In the apparatus 1, for example, a refrigerant such as R407A is circulated by a compressor 5 and mainly exchanges heat with air to cool or heat the refrigerant. And a heat exchanger 6 for exchanging heat between the refrigerant and the heat medium, and an inlet / outlet pipe joint 2 for connecting the heat medium to the factory pipe. It is arranged.

  FIG. 2 is a plan view showing an example of device arrangement and factory piping aggregation when a plurality of heat pump devices 1 of FIG. 1 are installed intensively. As shown in FIG. 2, by arranging a plurality of heat pump devices 1 with the side surfaces having the inlet pipe joint 2b or the outlet pipe joint 2a facing each other, the operation surfaces 3 of the respective devices 1 are arranged face to face. In addition, the configuration of the factory pipe 4 that is linear and short is possible at the same time, improving the efficiency of operation and maintenance, reducing the cost of the factory pipe, and suppressing the heat loss from the factory pipe that occurs during transportation of the heat medium. Can be achieved at the same time.

Embodiment 2. FIG.
FIG. 3 is a front view of the heat pump device 1A according to Embodiment 2 of the present invention, and is a view partially showing the devices arranged inside. Here, the inlet / outlet pipe joint 2 is installed on the left side surface adjacent to the operation surface 3 on which the operation unit 3a is installed. Inside the apparatus 1A, for example, a heat exchanger 6 which is a mechanism for exchanging heat between the heat medium and the refrigerant, indicated by a dotted line, a compressor 5 used in a circuit for heating or cooling the refrigerant, and those A refrigerant circuit 7 including a pipe for connecting the pipes, a heat medium pipe 8 in the apparatus 1 for connecting the inlet / outlet pipe joint 2 and the heat exchanger 6 and the like are arranged. FIG. 4 is a front view of the heat pump apparatus 1B according to Embodiment 2 of the present invention, and is a view partially showing the devices arranged inside. Here, the inlet / outlet pipe joint 2 is installed on the right side surface adjacent to the operation surface 3 on which the operation unit 3a is installed. The heat pump device 1B includes at least the heat exchanger 6, the compressor 5, the refrigerant circuit 7, and the heat medium pipe 8 constituting the heat pump apparatus 1A in FIG. The heat pump apparatus 1 </ b> A is arranged and configured so as to be rotated about 180 degrees with respect to the normal passing through the bottom surface.

  If the heat pump apparatuses 1A and 1B shown in FIG. 3 and FIG. 4 are used in combination and a plurality of apparatuses 1A and 1B are installed intensively as shown in FIG. It is possible to reduce the length of the pipe and to arrange the operation units of the respective devices close to each other.

In addition, as described above, if the components of the two devices 1A and 1B are arranged in a form rotated by 180 degrees, the arrangement and structure of the refrigerant circuit 7 that connects the heat exchanger 6 and the compressor 5, and the inlet / outlet piping Since the arrangement and structure of the heat medium pipe 8 connecting the joint 2 and the heat exchanger 6 can be shared by the apparatus 1A and the apparatus 1B, it is highly convenient in the production of the apparatus.
In the first embodiment, the factory piping can be consolidated and the operation surface 3 can be concentrated efficiently. However, since the inlet / outlet pipe joints are installed on both sides of the apparatus 1, the piping structure in the apparatus 1 becomes complicated. The piping length in the device 1 tends to be long. However, in the second embodiment, the inlet / outlet pipe joint 2 is disposed only on one side of the apparatuses 1A and 1B, and the distance between the heat exchanger 6 and the inlet / outlet pipe joint 2 can be configured short. The heat loss can be improved as compared with the first embodiment.

Example 2
Here, a plurality of heat pump devices are centrally arranged using the devices 1A and 1B of FIGS. In the apparatuses 1A and 1B, for example, a refrigerant such as R407A is circulated by a compressor, and a mechanism (refrigeration cycle mechanism) for mainly cooling and heating the refrigerant by exchanging heat with air, and heating the refrigerant and the heat medium. It has a heat exchanger 6 that is a mechanism for exchanging, and an inlet / outlet pipe joint 2 for connecting the heat medium to the factory pipe.

  Next, a specific configuration in the devices 1A and 1B will be described. A plate heat exchanger was used as the heat exchanger 6 for the heat medium and the refrigerant. As the compressor 5, four scroll compressors of about 20 horsepower were used. In FIG. 3 and FIG. 4, one compressor is shown for simplicity. The basic refrigerant path for cooling the heat medium is that the refrigerant discharged from the compressor 5 passes through the four-way switching valve, is sent to the shell-and-tube type air heat exchanger, and is sent to the plate heat exchanger. It is sent and returned to the compressor 5 from the plate heat exchanger. The refrigerant path is mainly composed of a copper pipe, and joints, valves, and filters are appropriately arranged on the way, but are not shown in the figure for simplicity.

  The inlet / outlet pipe joint 2 is manufactured by watertight welding a bolt-tightening flange to a stainless steel pipe having a diameter of about 90 mm and a length of about 100 mm. Even if there is no flange, it is joined to the factory pipe by direct welding or brazing. For example, a welding joint or a brazing joint may be used, or a clamp-shaped pipe connector may be used, or other general pipe joining methods may be used.

  The heat exchanger 6 is arranged with the shortest distance of the heat exchanger 6 from the side surface on which the inlet / outlet pipe joint 2 is installed, and the joint between the heat exchanger 6 and the inlet / outlet pipe joint 2 has a diameter of about 90 mm and a length of 100 mm. A stainless steel pipe (heat medium pipe 8) was welded. Thus, if the connection between the heat exchanger 6 and the inlet / outlet pipe joint 2 is made as short as possible, the cost of the apparatus and heat loss are reduced. The heat exchanger 6 has a depth of 400 mm, a width of 500 mm, and a height of about 700 mm, and four compressors 5 are arranged in a space of a depth of 400 mm, a width of 900 mm, and a height of about 800 mm. From the relationship between the size of the compressor 5, the size of the heat exchanger 6, and the arrangement of other components, it is possible to arrange both the compressor 5 and the heat exchanger 6 close to one side of the left side or the right side. For example, in FIG. 3, the heat exchanger 6 is installed on the left side and the compressor 5 is installed on the right side.

If the inlet / outlet pipe joint 2 is switched to the right side or the left side without changing the positional relationship among the operation surface 3, the compressor 5 and the heat exchanger 6, the heat exchanger 6 and the inlet / outlet pipe joint 2 are placed on the opposite side surfaces. When installed, that is, when the heat exchanger 6 is installed on the left side, but the inlet / outlet pipe joint 2 is arranged on the right side, the pipe in the device is extended to add multiple bent parts of the pipe This increases the cost of the device and the heat loss from the piping.
Therefore, in this embodiment, the compressor 5, the heat exchanger 6, the refrigerant circuit 7 that connects the compressor 5 and the heat exchanger 6, the inlet / outlet pipe joint 2, and the heat medium that connects the inlet / outlet pipe joint 2 and the heat exchanger 6. If the pipes 8 are collectively inverted by about 180 ° and arranged in the apparatus, the refrigerant circuit 7, the heat medium pipe 8 and the support metal accompanying them can be shared, and the heat medium pipe 8 is very short. Therefore, the cost of the apparatus and the heat loss from the heat medium pipe 8 can be improved.

FIG. 5 shows a specific example in which the heat pump devices 1A and 1B are installed in combination. Here, four heat pump apparatuses (two apparatuses 1A and 1B) are used, and the heat pump apparatuses 1A and 1B are arranged as a pair with the side surfaces having the inlet / outlet pipe joints 2 facing each other, and so on. Two groups are connected together.
By installing the four heat pump devices in the mode shown in FIG. 5, it is possible to arrange the operation surfaces 3 of the devices 1A and 1B so as to face each other and to configure the factory piping 4 linearly and short at the same time. Thus, the efficiency of operation and maintenance can be improved, the cost of the factory piping can be suppressed, and the heat loss from the factory piping generated when the heat medium is transported can be achieved at the same time. Further, the cost of the device itself and the heat loss in the device can be made equal to those of the conventional example.

  2 and 5 show examples in which four heat pump devices are combined, but the present invention can also be applied to a combination of two heat pump devices or a combination of four or more heat pump devices.

  The present invention relates to a component arrangement and piping structure of a heat pump device that cools or heats a heat medium with a refrigerant, and can be used for effective use of energy, cost reduction of the system, and improvement of workability.

It is the front view of the heat pump apparatus 1 which concerns on Embodiment 1 of this invention, and the figure which showed a part of apparatus arrange | positioned inside. The top view which shows the example of apparatus arrangement | positioning at the time of installing the heat pump apparatus of FIG. It is the front view of 1 A of heat pump apparatuses which concern on Embodiment 2 of this invention, and the figure which showed a part of apparatus arrange | positioned inside. It is the front view of the heat pump apparatus 1B which concerns on Embodiment 2 of this invention, and the figure which showed a part of apparatus arrange | positioned inside. The top view which shows the example of apparatus arrangement | positioning at the time of combining and installing multiple heat pump apparatuses of FIG. 3 and FIG. 4, and factory piping aggregation. The top view which shows the example of apparatus arrangement | positioning at the time of installing multiple units | sets intensively combining the conventional heat pump apparatus, and factory piping aggregation. The front view of the conventional heat pump apparatus.

Explanation of symbols

  1, 1A, 1B heat pump device, 2 inlet / outlet pipe joint, 2a outlet pipe joint, 2b inlet pipe joint, 3 operation surface, 3a operation section, 4 factory piping, 4a feed factory piping, 4b return factory piping, 5 compressor, 6 Heat exchanger, 7 refrigerant circuit, 8, 8a, 8b Heat medium piping.

Claims (6)

In a heat pump apparatus having at least a mechanism for heating or cooling the heat medium, an inlet pipe joint for introducing the heat medium into the apparatus, and an outlet pipe joint for discharging the heat medium to the outside of the apparatus,
A heat pump apparatus comprising a plurality of the inlet pipe joints or outlet pipe joints.   The outer shape of the device has a shape having at least a bottom surface and a plurality of side surfaces, and at least one of the inlet pipe joint and the outlet pipe joint is installed on two or more of the side faces. The heat pump device according to claim 1.   The outer shape of the device has a substantially hexahedron shape, a device operation unit is installed on one of the side surfaces, and the inlet pipe joint and the left and right side surfaces adjacent to the side surface on which the device operation unit is installed The heat pump device according to claim 2, wherein at least one outlet pipe joint is installed.   A heat pump device according to any one of claims 1 to 3, wherein a plurality of the heat pump devices are arranged with the side surfaces having the inlet pipe joint or the outlet pipe joint facing each other. At least a compressor that compresses the refrigerant, a heat exchanger that heats or cools the heat medium by exchanging heat with the refrigerant, a refrigerant circuit that connects the compressor and the heat exchanger, and the heat medium in the apparatus In a substantially hexahedral heat pump apparatus having an inlet pipe joint for introduction and an outlet pipe joint for discharging the heat medium out of the apparatus,
An apparatus operation unit is installed on one side surface, the heat exchanger is arranged near one of the left and right side surfaces adjacent to the side surface on which the apparatus operation unit is installed, and adjacent to the side surface on which the apparatus operation unit is installed Arrange the compressor near the other side of the left and right side,
The heat pump device, wherein the inlet pipe joint and the outlet pipe joint are installed on the one side surface. A first heat pump device according to claim 5 and a second heat pump device,
In the second heat pump device, a compressor, a heat exchanger, a refrigerant circuit, an inlet pipe joint and an outlet pipe joint constituting the second heat pump apparatus pass through the bottom line of the first heat pump apparatus through those of the first heat pump apparatus. Are arranged in a manner rotated approximately 180 degrees with respect to
At least one set of the first heat pump device and the second heat pump device is arranged with the side faces having the inlet / outlet pipe joints facing each other.

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