Refrigerant circulation device

Abstract

To provide a technique capable of arranging a monitor on a surface where a pump is inserted and extracted in a housing even in a limited area.SOLUTION: A refrigerant circulation device according to one aspect of the present disclosure includes a housing 9 having a flow path through which a refrigerant flows, a pump unit 4 that can be inserted into and removed from the housing, and a panel 8 located in the housing and having a display unit 81. The panel is movable between a first position at which the panel overlaps the pump unit and a second position at which the panel does not overlap the pump unit in an insertion / removal direction of the pump unit.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to a refrigerant circulation device. [Background technology]

[0002] Conventionally, there has been known a refrigerant circulation device that cools a heat source such as a CPU (Central Processing Unit) by transferring heat received from the heat source to a circulating refrigerant. Patent Document 1 discloses a refrigerant circulation device having a housing with multiple pumps, in which the multiple pumps can be inserted and removed from the front side of the housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Taiwan Patent No. 808418 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the refrigerant circulation device described in Patent Document 1, the pump occupies a large area on the front of the housing, so even if one were to place a monitor that displays the operating status of the refrigerant circulation device, etc., on the front of the housing where it is easy for the user to see, it is difficult to secure space to place the monitor.

[0005] The present disclosure provides a technique that enables a monitor to be placed on the surface of a housing where a pump is inserted and removed, even in a limited area. [Means for solving the problem]

[0006] A refrigerant circulation device according to one aspect of the present disclosure includes a housing having a flow path through which a refrigerant flows, a pump unit that is insertable into and removable from the housing, and a panel located on the housing and having a display unit. The panel is movable in the insertion / removal direction of the pump unit between a first position where it overlaps with the pump unit and a second position where it does not overlap with the pump unit. [Effects of the Invention]

[0007] The refrigerant circulation device of the present disclosure allows a monitor to be placed on the surface of the housing where the pump is inserted and removed, even in a limited area. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view of a CDU according to an exemplary embodiment. [Figure 2] FIG. 2 is a schematic perspective view of the interior of a CDU according to an exemplary embodiment. [Figure 3] FIG. 3 is a schematic front view of a CDU according to an exemplary embodiment. [Figure 4] FIG. 4 is a schematic side view of a CDU according to an exemplary embodiment. [Figure 5] FIG. 5 is a schematic block diagram of a CDU according to an exemplary embodiment. [Figure 6A] FIG. 6A is a perspective view of a pump unit according to an exemplary embodiment. [Figure 6B] FIG. 6B is a perspective cross-sectional view showing a fitting portion between the pump unit and the housing according to the exemplary embodiment. [Figure 7A] FIG. 7A is a perspective cross-sectional view of a handle actuation portion of a pump unit according to an exemplary embodiment. [Figure 7B] FIG. 7B is a perspective cross-sectional view illustrating a restricted state of the pump unit according to the exemplary embodiment. [Figure 8] FIG. 8 is a perspective view of the front of an exemplary embodiment of a CDU. [Figure 9] FIG. 9 is a perspective view of the front of an exemplary embodiment of a CDU. [Figure 10] FIG. 10 is a plan view of a panel and pump unit of a CDU according to an exemplary embodiment. [Figure 11] FIG. 11 is a perspective close-up view of the front of an exemplary embodiment of a CDU. [Figure 12]FIG. 12 is a perspective view illustrating a configuration of a locking portion according to an exemplary embodiment. [Figure 13] FIG. 13 is a perspective view illustrating a configuration of a locking portion according to an exemplary embodiment. [Figure 14] FIG. 14 is a front view of a CDU according to an exemplary embodiment. [Figure 15] FIG. 15 is an enlarged perspective view showing a panel and its peripheral members according to an exemplary embodiment. [Figure 16] FIG. 16 is a cross-sectional view taken along line XVI-XVI in FIG. [Figure 17] FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. [Figure 18] FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. [Figure 19] FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a mode for carrying out a refrigerant circulation device according to the present disclosure (hereinafter referred to as an "exemplary embodiment") will be described in detail with reference to the drawings. Note that the present disclosure is not limited to this exemplary embodiment. Furthermore, the exemplary embodiments can be appropriately combined within the scope of not causing any contradiction in the processing content. Furthermore, the same components in the following exemplary embodiments will be given the same reference numerals, and duplicated explanations will be omitted.

[0010] In addition, in the drawings referred to below, for ease of understanding, an orthogonal coordinate system may be shown in which the X-axis, Y-axis, and Z-axis directions are defined as being perpendicular to each other, and the positive Z-axis direction is the vertically upward direction.

[0011] Illustrative Embodiments Next, the configuration of a CDU 100 according to an exemplary embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a schematic perspective view of the CDU 100 according to an exemplary embodiment. FIG. 2 is a schematic perspective view showing the interior of the CDU 100 according to an exemplary embodiment. FIG. 3 is a schematic front view of the CDU 100 according to an exemplary embodiment. FIG. 4 is a schematic side view of the CDU 100 according to an exemplary embodiment. FIG. 5 is a schematic configuration diagram of the CDU 100 according to an exemplary embodiment. Note that "CDU" is an abbreviation for "Coolant Distribution Unit." The CDU 100 is an example of a refrigerant circulation device.

[0012] The CDU 100 controls the flow rate, temperature, water quality, and distribution destination of the refrigerant supplied from the facility. The CDU 100 draws in the primary refrigerant into the CDU 100 and pumps the primary refrigerant out of the CDU 100. The CDU 100 also draws in the secondary refrigerant into the CDU 100 and pumps the secondary refrigerant out of the CDU 100.

[0013] The CDU 100 exchanges heat between a primary refrigerant and a secondary refrigerant. For example, refrigerants such as antifreeze and pure water can be used as the primary and secondary refrigerants. Examples of antifreeze that can be used as refrigerants include an ethylene glycol aqueous solution and a propylene glycol aqueous solution. The primary and secondary refrigerants may be the same or different types. At least one of the primary and secondary refrigerants may be a gas refrigerant.

[0014] The CDU 100 includes a primary flow path 1 (see FIG. 5), a secondary flow path 2 (see FIG. 5), a heat exchanger 3, a pump unit 4, a tank 5, a control unit 6, a wiring board 7, a panel 8, a power supply 10, and control valves 113, 232, 242, and 252 (see FIG. 5). A primary refrigerant flows through the primary flow path 1. A secondary refrigerant flows through the secondary flow path 2. The primary flow path 1 and the secondary flow path 2 are examples of flow paths. Details of the primary flow path 1 and the secondary flow path 2 will be described later.

[0015] The heat exchanger 3 is connected to the primary flow path 1 and the secondary flow path 2. The primary refrigerant and the secondary refrigerant flow into and out of the heat exchanger 3. The heat exchanger 3 exchanges heat between the primary refrigerant and the secondary refrigerant inside. The heat exchanger 3 uses a plate-type heat exchange system, for example. The outer periphery of the heat exchanger 3 is covered with a heat insulating material. The tank 5, the control unit 6, the wiring board 7, and the power supply 10 are arranged on the heat exchanger 3 via the heat insulating material.

[0016] The pump unit 4 is connected to the secondary flow path 2. The pump unit 4 has an internal flow path. When the pump unit 4 is driven, the secondary refrigerant is drawn into the internal flow path of the pump unit 4 and then pumped out from the internal flow path of the pump unit 4. This circulates the secondary refrigerant between the CDU 100 and the external cold plate. The number of pump units 4 is not particularly limited. For example, the number of pump units 4 is three. That is, the CDU 100 may include multiple pump units 4. The multiple pump units 4 may all have the same configuration and a common design. This improves productivity of the pump units 4 and eliminates concerns about incorrect insertion positions of the pump units 4. In addition, the panel 8, which will be described later, may be located on the negative side of the X-axis relative to the multiple pump units 4. As a result, the three same pump units 4 can be used, and the couplers on the collection manifold 22 can be aligned in the Y-axis direction (they are positioned in the same position in the X-axis direction). The insertion ports of the pump units 4 can be flush, thereby improving productivity. The configuration of the pump unit 4 will be described later.

[0017] Tank 5 stores the refrigerant used as the secondary refrigerant. Tank 5 is connected to secondary flow path 2. Tank 5 is capable of supplying refrigerant to secondary flow path 2. When the amount of secondary refrigerant circulating through secondary flow path 2 decreases, the flow rate of the circulating secondary refrigerant can be kept constant by flowing the refrigerant stored in tank 5 into secondary flow path 2.

[0018] Tank 5 is equipped with a liquid level sensor (not shown), a sight glass (not shown) that allows the liquid level to be visually checked, an air vent valve (not shown) that releases gas that has accumulated in tank 5, and a water injection hole (not shown) that allows refrigerant to be injected into tank 5 when the refrigerant level decreases.

[0019] The control unit 6 controls the sensors 111, 112, 114 to 116, 211, 212, 214, 215, the pump 42, and the control valves 113, 232, 242, 253 (see FIG. 5) arranged in the CDU 100, and monitors their status.

[0020] The panel 8 has a display unit 81. The display unit 81 displays the operating status of the system and the measured values ​​of the sensors 111, 112, 114 to 116, 211, 212, 214, and 215. The configuration of the panel 8 will be described later.

[0021] The power supply 10 supplies power to the pump 42 and the control valves 113, 232, 242, 253 (see FIG. 5), etc. Two power supplies 10 are arranged on the first surface 901 side of the CDU 100.

[0022] The control valves 113, 232, 242, and 253 (see FIG. 5) control the flow rate of the refrigerant by controlling the opening and closing of the valves.

[0023] The CDU 100 includes a housing 9. The housing 9 has a storage area 90. The housing 9 accommodates a primary flow path 1, a secondary flow path 2, a heat exchanger 3, a pump unit 4, a tank 5, a control unit 6, a wiring board 7, a power supply 10, and control valves 113, 232, 242, and 253 in the storage area 90.

[0024] 2 and 5 show an example of the configuration of the CDU 100, and the CDU 100 may further include components other than those shown in FIGS.

[0025] <Case> Next, the housing 9 of the CDU 100 according to an exemplary embodiment will be described with reference to FIGS.

[0026] The accommodation area 90 of the housing 9 has a generally rectangular shape with the X-axis direction as the longitudinal direction and the Y-axis direction as the lateral direction when viewed from above in the Z-axis direction. That is, the accommodation area 90 extends in the X-axis and Y-axis directions that intersect with each other, and has a dimension longer in the X-axis direction than in the Y-axis direction. The Z-axis direction is the depth direction of the accommodation area 90. The width (depth) of the accommodation area 90 in the Z-axis direction is smaller than the widths of the accommodation area 90 in the X-axis and Y-axis directions.

[0027] The housing 9 has a first surface 901 to a sixth surface 906. The first surface 901 to the sixth surface 906 surround the accommodation area 90. In other words, the housing 9 has the area surrounded by the first surface 901 to the sixth surface 906 as the accommodation area 90.

[0028] The first surface 901 and the second surface 902 are arranged opposite each other in the X-axis direction with the accommodation area 90 in between. The first surface 901 is arranged on one side in the X-axis direction (the positive X-axis direction side). The second surface 902 is arranged on the other side in the X-axis direction (the negative X-axis direction side). In the following description, the first surface 901 may be referred to as the back surface 901, and the second surface 902 may be referred to as the front surface 902.

[0029] As shown in Fig. 5, a primary inlet 1a and a primary outlet 1b for the primary refrigerant, and a secondary inlet 2a and a secondary outlet 2b for the secondary refrigerant are provided on the first surface 901. As shown in Fig. 3, a front handle 102 is provided on the second surface 902. When the panel 8 is closed, the front handle 102 is exposed in a front view. As a result, the front handle 102 can be used when the panel 8 is closed.

[0030] The third surface 903 and the fourth surface 904 are arranged opposite each other in the Y-axis direction with the accommodation area 90 in between. The third surface 903 is arranged on one side in the Y-axis direction (the positive Y-axis side). The fourth surface 904 is arranged on the other side in the Y-axis direction (the negative Y-axis side).

[0031] The fifth surface 905 and the sixth surface 906 are arranged opposite each other in the Z-axis direction with the accommodation area 90 in between. The fifth surface 905 is arranged on one side in the Z-axis direction (the positive Z-axis side). The sixth surface 906 is arranged on the other side in the Z-axis direction (the negative Z-axis side).

[0032] <Pump unit> Next, the pump unit 4 according to an exemplary embodiment will be described with reference to Fig. 6A. Fig. 6A is a perspective view showing the pump unit 4 according to an exemplary embodiment.

[0033] The pump unit 4 can be inserted into and removed from the housing 9 of the CDU 100. The pump unit 4 includes a handle 41, a pump 42, a coupling 43, and a control board (not shown). The pump 42 and the CDU 100 are connected via the coupling 43, which prevents refrigerant from leaking when the pump unit 4 is inserted or removed. The coupling 43 has a first member (not shown) that can be connected to the pump 42, and a second member (not shown) that is fixed to the CDU 100. The connection between the first member and the second member allows refrigerant to flow between the CDU 100 and the pump 42.

[0034] Even if refrigerant leaks due to a poor connection of the coupling 43, a liquid receiving tray (not shown) is provided below the connection of the coupling 43 to prevent the refrigerant from spreading outside the CDU 100. Since a poor connection of the coupling 43 occurs when the pump unit 4 moves obliquely when inserted or removed, a guide rail (not shown) is provided to allow the pump unit 4 to move straight. Such a guide rail may be provided only on the bottom surface of the pump unit 4, or only on the top surface. Furthermore, the guide rail may be provided on both the top and bottom surfaces of the pump unit 4. The guide rail may be sloped so that the opening for the pump unit 4 widens. This makes it easier to insert the pump unit 4 into the CDU 100.

[0035] By providing a floating mechanism in the second member of the coupling 43, it is possible to absorb small deviations of the pump unit 4 and connect it.

[0036] The control board of the pump unit 4 may be disposed above the pump 42. This makes it possible to prevent breakdowns due to the refrigerant even if liquid leaks from the pump 42.

[0037] The pump unit 4 may be provided with a resin cover (not shown) that protects the control board and wiring.

[0038] The upper part of the sixth surface 906 of the CDU 100, which comes into contact with the underside of the pump unit 4, is formed of a resin plate, which allows the pump unit 4 to be inserted and removed with little friction. The plate can be made of, for example, PTFE or PFA.

[0039] The three pump units 4 can increase the flow rate of the secondary refrigerant pumped from the CDU 100 by simultaneously operating the three pumps 42. Furthermore, if the required cooling performance can be achieved with a flow rate less than the flow rate when all three pump units 4 are operating, it is possible to operate two or one pump 42 and stop the operation of the remaining pump 42.

[0040] For example, if only two pumps 42 are operated and one pump 42 is stopped, the pump 42 to be operated can be switched depending on the operating time so that the operating time of each pump unit 4 is uniform. This prevents uneven operating times of the pumps 42. Furthermore, if the pumps 42 are not operated for a long period of time, moving parts such as the impeller may become stuck and cause malfunctions. Therefore, by operating the pumps 42 periodically to prevent sticking, malfunctions of the pumps 42 can be prevented. Furthermore, if an operating pump 42 fails, the operation of the failed pump 42 can be stopped and the stopped pump 42 can be operated. Therefore, even if one pump 42 fails, a decrease in the circulating flow rate can be prevented. Furthermore, using hot-swappable pumps 42 makes it easy to replace the pumps 42, improving the maintainability of the pumps 42.

[0041] The pump unit 4 may be provided with an indicator light 45 on a front surface 47 along the insertion / removal direction (X-axis direction) that indicates the operating status of the pump unit 4. The indicator light 45 may indicate the status of the pump unit 4 (normal, faulty, poor connection with the power supply 10, etc.). The indicator light 45 makes it easy to check the status of the pump 42.

[0042] 6A shows an example in which one indicator light 45 is provided, it is possible to provide a plurality of indicator lights 45. Furthermore, the status of the pump 42 can be identified by the flashing method of the indicator light 45 or the color of the lit light.

[0043] Next, the handle 41 of the pump unit 4 according to the exemplary embodiment will be described with further reference to Fig. 6B. Fig. 6B is a perspective cross-sectional view showing the fitting portion between the pump unit 4 according to the exemplary embodiment and the housing 9.

[0044] The handle 41 is rotatably fixed to both sides perpendicular to the insertion / removal direction (X-axis direction) of the pump unit 4, and is located on the front surface 47 along the insertion / removal direction of the pump unit 4, protruding in a direction away from the housing 9 (negative X-axis direction) beyond the front surface 47.

[0045] Specifically, the handle 41 includes a handle actuation portion 411, two handle side portions 412, a rotation support portion 413, and an opposing portion 414. The handle actuation portion 411 is located outside the housing 9 when the pump unit 4 is inserted into the housing 9. The handle actuation portion 411 may have a display indicating the operation to be performed. This can reduce operational errors by the user. Furthermore, as shown in FIG. 3, when the panel 8 is closed, the handle actuation portion 411 does not overlap with the handle actuation portion 411 of an adjacent pump unit 4 in a front view.

[0046] The two handle side portions 412 are located on both side surfaces of the pump unit 4. One end of the handle side portion 412 is connected to the handle actuation portion 411, and the other end is fixed to the side surface of the pump unit 4 by a rotation support portion 413. In other words, the handle actuation portion 411 connects the two handle side portions 412. The other end of the handle side portion 412 is provided with an opposing portion 414 that faces the protrusion 99 of the housing 9. The protrusion 99 protrudes from the surface of the housing 9 that faces the side surface of the pump unit 4 in a direction (Y-axis direction) that intersects with the insertion / removal direction of the pump unit 4.

[0047] The handle 41 is movable between a third position and a fourth position. Specifically, when the handle 41 is in the third position, the two handle side portions 412 extend in a direction (X-axis direction) perpendicular to the front surface 47 of the pump unit 4, and at least a portion of one end of each of the two handle side portions 412 is located closer to the front surface (negative X-axis direction) than the front surface. Accordingly, the handle actuation portion 411 is located closer to the front surface 47 (negative X-axis direction). On the other hand, when the handle 41 is in the fourth position, as shown in FIG. 6A , the two handle side portions 412 extend along both side surfaces of the pump unit 4, and therefore the handle actuation portion 411 is located closer to the front surface (negative X-axis direction) than the front surface 47 and below the front surface 47 in a front view. When the handle 41 is in the third position, the handle actuation portion 411 is located higher (positive Z-axis direction) than when the handle 41 is in the fourth position. That is, when the handle 41 is in the third position, the handle 41 is in a raised state, and when the handle 41 is in the fourth position, the handle 41 is in a lowered state. The handle side portion 412 is rotated by the rotation support portion 413 around a rotation axis extending in a direction intersecting the insertion / removal direction (Y-axis direction), so that the handle 41 can be displaced between the third position and the fourth position.

[0048] Next, a procedure for inserting the pump unit 4 into the CDU 100 according to the exemplary embodiment will be described.

[0049] First, the pump unit 4 begins to be inserted into the CDU 100 with the handle 41 raised, i.e., with the handle 41 in the third position. Next, when the distance between the front face 902 of the CDU 100 and the front face 47 of the pump unit 4 reaches a predetermined distance, for example, approximately 10 mm, the handle 41 is lowered while pushing the pump unit 4 to insert it into the CDU 100. At this time, the opposing portion 414 of the handle 41 comes into contact with the protrusion 99 on the housing 9 of the CDU 100. By lowering the handle 41, the pump unit 4 is inserted using the protrusion 99 as a fulcrum.

[0050] When the handle 41 is fully lowered, i.e., when the handle 41 is in the fourth position, the opposing portion 414 is located further back in the insertion direction of the pump unit 4 (positive X-axis direction) than the convex portion 99, and the opposing portion 414 and the convex portion 99 overlap in the insertion / removal direction of the pump unit 4 (X-axis direction), i.e., are opposed to each other, making it impossible to pull the pump unit 4 out of the CDU 100.

[0051] The pump unit 4 is provided with two rotation support parts 413, so that when the handle 41 is lowered, force is applied to only one of the rotation support parts 413, preventing the pump unit 4 from shifting in a direction perpendicular to the insertion / removal direction (Y-axis direction).

[0052] Next, a procedure for removing the pump unit 4 according to the exemplary embodiment will be described.

[0053] Next, while holding the handle 41 in the fourth position, the operating unit 461 is lowered to raise the handle 41. At this time, by pulling the handle 41 toward the front of the CDU 100, the handle 41 rotates around the rotation support part 413, and the handle 41 moves from the fourth position to the third position. As a result, the opposing part 414 of the handle side part 412 and the protrusion 99 do not overlap in the insertion / removal direction of the pump unit 4 (X-axis direction), i.e., they do not face each other, and the pump unit 4 can be removed from the CDU 100. The operating unit 461 will be described later.

[0054] When the handle 41 is fully raised, that is, when the handle 41 reaches the third position, the handle operating portion 411 of the pump unit 4 is grasped and pulled out from the CDU 100.

[0055] Next, restriction of movement of the pump unit 4 according to an exemplary embodiment will be described with further reference to Figures 7A and 7B. Figure 7A is a perspective cross-sectional view showing the handle actuation portion 411 of the pump unit 4 according to an exemplary embodiment. Figure 7B is a perspective cross-sectional view showing the restricted state of the pump unit 4 according to the exemplary embodiment.

[0056] 6A and 7B, pump unit 4 includes restricting portion 46 that restricts movement of handle 41 to the third position when handle 41 is located at the fourth position. In other words, restricting portion 46 restricts handle 41 from moving up when handle 41 is in the lowered position.

[0057] The restricting unit 46 includes an operating unit 461, an elastic member 462, and a plate unit 463. The operating unit 461 is displaceable between a fifth position and a sixth position. Specifically, when the operating unit 461 is in the fifth position, the operating unit 461 is positioned on the positive Z-axis side of the through-hole 472 in the front face 47. When the operating unit 461 is in the sixth position, the operating unit 461 is positioned on the negative Z-axis side of the through-hole 472 in the front face 47, as shown in FIG. 6A . In other words, when the operating unit 461 is in the fifth position, the operating unit 461 is in a raised state, and when the operating unit 461 is in the sixth position, the operating unit 461 is in a lowered state.

[0058] The elastic member 462 biases the operating portion 461 in a direction from the sixth position toward the fifth position (positive direction of the Z axis). The plate portion 463 is connected to the operating portion 461 on the rear side of the front surface 47 of the pump unit 4, as shown in FIG. 7B.

[0059] The restricting unit 46 restricts movement of the handle 41 to the third position by moving the operating unit 461 from the sixth position to the fifth position as the handle 41 moves from the third position to the fourth position. On the other hand, when the operating unit 461 moves from the fifth position to the sixth position, the state in which the movement of the handle 41 to the third position is restricted is released.

[0060] In this way, the CDU 100 has the restricting unit 46, which can prevent the handle 41 from moving to the third position due to an erroneous operation, causing the pump unit 4 to come off the CDU 100. Furthermore, the restricting unit 46 has an operating unit 461, which allows the state of the restricting unit 46 to be changed by a user's operation.

[0061] 7A, the handle actuation portion 411 has a through portion 4111 that is inserted into a through hole 471 provided in the front surface 47 of the pump unit 4. The through portion 4111 has an inclined portion 4112 that is inclined in the direction of insertion into the through hole 471, and an opposing portion 4113 that is not inclined.

[0062] When the handle 41 is lowered after the pump unit 4 is inserted into the CDU 100, the through-hole 4111 of the handle actuation portion 411 is inserted into the through-hole 471, and the plate portion 463 and the opposing portion 4113 face each other in the insertion / removal direction (X-axis direction). The operating portion 461 and the plate portion 463 are pulled vertically upward (toward the positive direction of the Z-axis) by the elastic member 462. Therefore, unless the user lowers the operating portion 461, at least a portion of the plate portion 463 remains positioned facing the through-hole 471 (see FIG. 7B). This prevents the user from lifting the handle 41. In other words, movement of the handle 41 to the third position is restricted.

[0063] In other words, when the through portion 4111 penetrates the through hole 471, the opposing portion 4113 and the plate portion 463 face each other in the insertion / removal direction, preventing the through portion 4111 from coming out of the through hole 471 unless the user lowers the operating portion 461.

[0064] When the user lowers the operating portion 461, the elastic member 462 stretches and the plate portion 463 also lowers so that it no longer faces the opposing portion 4113, allowing the through portion 4111 to be removed from the through hole 471 and making it possible to move the handle 41.

[0065] <Panel and display> Next, the panel 8 and the display unit 81 according to an exemplary embodiment will be described with reference to Figures 8 to 11. Figures 8 and 9 are perspective views showing a front surface 902 of the CDU 100 according to an exemplary embodiment. Figure 10 is a plan view showing the panel 8 and the pump unit 4 of the CDU 100 according to an exemplary embodiment. Figure 11 is an enlarged perspective view showing the front surface 902 of the CDU 100 according to an exemplary embodiment.

[0066] The panel 8 may include a first member 8a, a second member 8b, and a support portion 8c. The first member 8a has a display portion 81.

[0067] The display unit 81 displays data such as the operating status of the pump 42 or the control valves 113, 232, 242, 252, and the refrigerant temperature, acquired from the sensors 111, 112, 114 to 116, 211, 212, 214, 215 (see FIG. 5).

[0068] The display unit 81 may have an operation surface that accepts operations by the user. The display unit 81 may be, for example, a touch panel display. The display unit 81 as a touch panel display is, for example, a flat panel display such as a liquid crystal display or an organic electroluminescence (EL) display. The display unit 81 as a touch panel display can set a control method for the pump 42, such as whether to control the pump 42 so that the temperature is below the dew point or whether to switch the operation of the pump 42 depending on the operation time. The display unit 81 as a touch panel display can also set upper and lower limits of the temperature of the secondary refrigerant, such as whether to adjust the rotation speed of the pump 42 and the amount of primary refrigerant inflow into the heat exchanger 3 so that the refrigerant temperature falls within a set temperature range.

[0069] In this way, the display unit 81 has an operation surface, so that the user can check the operating status of the CDU 100 and can also make various settings according to the operating status of each part in the CDU 100.

[0070] The second member 8b is, for example, a cover member that covers the first member 8a. Specifically, the second member 8b has a cover surface that is positioned at a position shifted relative to the first member 8a in a direction perpendicular to the display unit 81 and away from the housing 9 (negative direction of the X axis), and a side surface that is connected to the cover surface and extends in a direction perpendicular to the cover surface and toward the housing 9 (positive direction of the X axis). The cover surface is the surface that faces the display unit 81. As shown in FIG. 9, the first member 8a is located in a space formed by the cover surface and the side surface.

[0071] The second member 8b has an opening 801. The opening 801 is rectangular and is provided at a position on the cover surface corresponding to the display unit 81. Specifically, the size of the opening 801 may be larger than the size of the display unit 81. The opening 801 is located at a position overlapping with the display unit 81 in a direction perpendicular to the display unit 81 of the panel 8 (the X-axis direction).

[0072] The second member 8b may further have an opening 802. The opening 802 is provided on the cover surface at a position corresponding to a locking portion 83, which will be described later. The opening 802 is located at a position overlapping with the locking portion 83 in the direction perpendicular to the display portion 81 of the panel 8 (the X-axis direction).

[0073] The dimension of the second member 8b in the vertical direction (Z-axis direction) may be larger than the dimension of the first member 8a in the vertical direction (Z-axis direction).

[0074] Here, the panel 8 of the CDU 100 according to the exemplary embodiment is movable between a first position and a second position. When the panel 8 is in the first position, as shown in Fig. 8, the panel 8 is positioned so as to overlap with the pump unit 4 in the insertion / removal direction of the pump unit 4 (X-axis direction). When the panel 8 is in the second position, as shown in Figs. 9 and 10, the panel 8 is positioned so as not to overlap with the pump unit 4 in the insertion / removal direction of the pump unit 4 (X-axis direction).

[0075] With this configuration, it is possible to arrange the pump unit 4 and the panel 8 having the display unit 81 even in a limited area. In addition, since both the pump unit 4 and the display unit 81 can be arranged on the front surface 902 of the CDU 100, it becomes easier to insert and remove the pump unit 4 into and from the CDU 100 and to view the display unit 81, improving workability.

[0076] Specifically, the panel 8 may be supported on the front surface 902 of the CDU 100 by a support portion 82 so as to be rotatable about a rotation axis A1. The support portion 8c may be, for example, a hinge. The panel 8 may have two support portions 8c. One of the two support portions 8c may be connected to a first member 8a of the panel 8, and the other may be connected to a second member 8b of the panel 8.

[0077] The panel 8 may be movable between a first position and a second position by rotating about a rotation axis A1 extending in the vertical direction (Z-axis direction) using the support portion 8c. When the panel 8 is in the first position, the panel 8 is positioned along the front surface 902 (X-axis direction and Z-axis direction) of the CDU 100, as shown in Fig. 8. In this case, the panel 8 is positioned so as to overlap the front surface 47 of the pump unit 4 in the insertion / removal direction of the pump unit 4 (X-axis direction), so the pump unit 4 cannot be inserted or removed from the CDU 100.

[0078] When the panel 8 is in the second position, the panel 8 is positioned along a direction intersecting the front surface 902 of the CDU 100. In this case, the panel 8 is positioned without overlapping with the pump unit 4 in the insertion / removal direction (X-axis direction) of the pump unit 4, so the pump unit 4 can be inserted and removed from the CDU 100. In this case, the rear surface of the second member 8b having the display unit 81 can be easily operated, which facilitates maintenance of wiring (not shown), such as a communication cable connecting to the control unit 6.

[0079] Furthermore, by rotating the panel 8 around the rotation axis A1 by the support portion 8c, the CDU 100 can be arranged in a space-saving manner in the height direction (Z-axis direction).

[0080] 9 and 10 show an example in which the panel 8 is positioned along a direction perpendicular to the front surface 902 of the CDU 100 (Y-axis direction) when the panel 8 is in the second position, i.e., an example in which the panel 8 is rotated approximately 90 degrees around the rotation axis A1 from the state in the first position, but this is not limiting. The panel 8 may be rotated more than 90 degrees around the rotation axis A1 from the state in the first position. In other words, the second position of the panel 8 may be a position in which the panel 8 is rotated more than 90 degrees around the rotation axis A1 from the state in the first position.

[0081] In addition, although an example has been shown here in which the panel 8 is rotatable around the rotation axis A1 between the first position and the second position, the manner of movement of the panel 8 is not limited to rotation. For example, the panel 8 may be movable between the first position and the second position by sliding.

[0082] The support portion 8c is disposed at a position overlapping the front handle 102 on the front surface 902 of the CDU 100 when viewed vertically (in the Z-axis direction). Specifically, one of the two support portions 8c may be disposed on one vertical side (positive Z-axis side) of the front handle 102, and the other may be disposed on the other vertical side (negative Z-axis side) of the front handle 102. By locating the support portions 8c at positions spaced apart in the Z-axis direction in this manner, the panel 8 can be rotated stably.

[0083] The support portion 8c may be provided on the second surface 902 of the housing 9 at a position closer to the third surface 903 than the plurality of pump units 4. This makes it less likely for the panel 8 to interfere when inserting or removing the pump unit 4 while the panel 8 is in the second position, compared to when the support portion 8c is located between the plurality of pump units 4 on the second surface 902. This improves the ease of inserting or removing the pump unit 4. The support portion 8c may be provided on the second surface 902 of the housing 9 at a position closer to the fourth surface 904 than the plurality of pump units 4.

[0084] As described above, the CDU 100 may include a plurality of pump units 4. In this case, at least one of the plurality of pump units 4 may overlap with the panel 8 located at the first position in the insertion / removal direction of the pump unit 4 (X-axis direction).

[0085] By providing multiple pump units 4, even if one pump unit 4 fails, the other pump units 4 can continue to operate, preventing a decrease in the flow rate of the refrigerant. This makes the CDU 100 highly reliable. Furthermore, even when multiple pump units 4 that can be inserted into or removed from the housing 9 are provided, the panel 8 and pump units 4 can be arranged on the front surface 902, allowing the pump units 4 and panel 8 to be arranged even in a limited area.

[0086] 8 shows an example in which one of the multiple pump units 4 overlaps with the panel 8 located at the first position in the insertion / removal direction of the pump unit 4 (X-axis direction), but the number of pump units 4 overlapping with the panel 8 is not limited to this. Multiple pump units 4 may overlap with the panel 8 in the insertion / removal direction of the pump unit 4. This allows a large area for the display unit 81 to be secured.

[0087] The CDU 100 may also have multiple panels 8. For example, the CDU 100 may have two panels 8. In this case, one panel 8 may be positioned so as to be rotatable between a first position and a second position by a support portion 8c provided on the second surface 902 of the housing 9 at a position closer to the third surface 903 than the plurality of pump units 4. The other panel 8 may be positioned so as to be rotatable between the first position and the second position by a support portion 8c provided on the second surface 902 at a position closer to the fourth surface 904 than the plurality of pump units 4. When the two panels 8 are positioned at the first position, the two panels 8 may be positioned so as to overlap all of the plurality of pump units 4. In other words, the two panels 8 may have a so-called double-door structure. This allows a larger area to be secured for the display unit 81.

[0088] 8 and 11, when the panel 8 is in the first position, the handle 41 of the pump unit 4 may overlap with the panel 8 in the insertion / removal direction (X-axis direction) of the pump unit 4. Specifically, when the panel 8 is in the first position, the handle 41 may overlap with the second member 8b of the panel 8 in the insertion / removal direction (X-axis direction) of the pump unit 4. Furthermore, when the panel 8 is in the first position, a part of the handle side portion 412 of the handle 41 may overlap with the first member 8a of the panel 8 in the insertion / removal direction (X-axis direction) of the pump unit 4.

[0089] In this way, by having the handle 41 and the panel 8 overlap in the insertion / removal direction (X-axis direction) of the pump unit 4, it is possible to reduce the risk of erroneous operation of the handle 41 when the panel 8 is in the first position.

[0090] 11, when the panel 8 is in the first position, the handle 41 may have two handle side portions 412 extending in the vertical direction (Z-axis direction), and the handle actuation portion 411 located below the front surface 47 of the pump unit 4. In other words, the handle 41 may be in the fourth position in a lowered state.

[0091] In this state, the display unit 81 may be located between the two handle side units 412 and above the handle actuation unit 411.

[0092] According to this configuration, the handle 41, which protrudes from the front surface 47 of the pump unit 4, and the display unit 81 are positioned so as not to overlap, thereby enabling the housing 9 to be made space-saving in the direction along the insertion / removal direction of the pump unit 4 (X-axis direction).

[0093] 8, the panel 8 may have a plurality of through-holes 803 located below the display unit 81. Specifically, the second member 8b of the panel 8 may have a plurality of through-holes 803 located below the opening 801.

[0094] By providing the panel 8 with multiple through holes 803 in this manner, air can be blown to the pump unit 4 through the through holes 803 even when the panel 8 is in the first position, i.e., when the panel 8 covers the front surface 47 of the pump unit 4.

[0095] 8 and 11, the panel 8 may have a locking portion 83 that restricts movement of the panel 8 from the first position to the second position. Specifically, the locking portion 83 may be provided on the first member 8a of the panel 8. The locking portion 83 may be provided on the first member 8a of the panel 8 below the display unit 81.

[0096] The configuration of the locking portion 83 according to the exemplary embodiment will be described with reference to Figures 12 and 13. Figures 12 and 13 are perspective views showing the configuration of the locking portion 83 according to the exemplary embodiment.

[0097] The locking unit 83 includes a slide bar 831, a spring (not shown), and an operating unit 832. A plate member 103 that protrudes in a direction away from the housing 9 (the negative direction of the X axis) is provided on the front surface 902 of the CDU 100, and the plate member 103 is formed with a hole 103a through which the slide bar 831 can be inserted.

[0098] The slide bar 831 is slidable in the plane of the panel 8 and in a direction perpendicular to the rotation axis A1 (Y-axis direction). The slide bar 831 is biased by a spring toward the hole 103a of the CDU 100. The operating unit 832 is rotatable around the rotation axis A2 and is connected to the slide bar 831.

[0099] When the panel 8 is in the first position, one end of the slide bar 831 is inserted through the hole 103a by the spring, and in this state the slide bar 831 interferes with the inner wall of the hole 103a, restricting the movement of the panel 8 from the first position to the second position.

[0100] When the operating part 832 provided on the panel 8 is rotated around the rotation axis A2, the slide bar 831 slides away from the hole 103a (negative Y-axis direction) and is removed from the hole 103a, thereby releasing the restricted state. This allows the panel 8 to rotate and move from the first position to the second position.

[0101] In this way, by providing the locking portion 83 to the panel 8, it is possible to reduce movement of the panel 8 from the first position to the second position due to an erroneous operation.

[0102] 8 and 11 to 13. For example, locking portion 83 may be a screw portion that screws together panel 8 and front surface 47 of pump unit 4. In this case as well, it is possible to reduce movement of panel 8 from the first position to the second position due to an erroneous operation, and to prevent panel 8 from moving at a timing not intended by the user, which makes it impossible to check display unit 81.

[0103] The panel 8 may restrict movement of the panel 8 from the second position to the first position. For example, a so-called snap-fit ​​structure may restrict movement of the panel 8 from the second position to the first position.

[0104] Specifically, when the panel 8 is opened to a predetermined angle, i.e., rotated from the first position to the second position, a protrusion (not shown) on the panel 8 and a recess (not shown) on the CDU 100 may interfere with each other, and the protrusion may fit into the recess, thereby fixing the panel 8 in the second position.

[0105] In this state, even if an attempt is made to rotate the panel 8 from the second position to the first position, the protrusion hits the side wall of the recess, preventing the movement, and therefore the panel 8 cannot be rotated to the first position unless the user releases the restriction by, for example, pressing the protrusion.

[0106] In this way, by restricting the movement of the panel 8 from the second position to the first position, movement in the closing direction when the panel 8 is opened to insert or remove the pump unit 4 is suppressed, thereby preventing the panel 8 from getting caught during the insertion or removal work.

[0107] Next, the transmissive portion 84 and the space 85 of the panel 8 according to an exemplary embodiment will be described with reference to FIGS. 14 and 15. FIG. 14 is a front view of the CDU 100 according to an exemplary embodiment. FIG. 15 is an enlarged perspective view showing the panel 8 and its peripheral members according to the exemplary embodiment. Note that the first member 8a, the second member 8b, and the support portion 8c of the panel 8 are omitted from FIG. 14.

[0108] 15, the panel 8 may include a transmission portion 84. When the panel 8 is in the first position, the transmission portion 84 overlaps with the indicator light 45 of the pump unit 4 in the insertion / removal direction (X-axis direction) of the pump unit 4. The transmission portion 84 transmits light from the indicator light 45.

[0109] Specifically, the transmitting portion 84 may include a first transmitting portion 841 of the first member 8a and a second transmitting portion (not shown) of the second member 8b. The first transmitting portion 841 may be, for example, a cylindrical member. When the panel 8 is positioned in the first position, the first transmitting portion 841 extends in a direction perpendicular to the front surface 47 of the pump unit 4 (the X-axis direction). A through-hole of the first transmitting portion 841 and the indicator light 45 overlap in the insertion / removal direction of the pump unit 4 (the X-axis direction). The second transmitting portion may be made of a transparent or translucent member. For example, the second transmitting portion may be made of a transparent material such as glass or acrylic. In this case, the light of the indicator light 45 is visible to the user through the through-hole of the first transmitting portion 841 and the second transmitting portion.

[0110] As a result of the panel 8 having the transparent portion 84, even when the panel 8 is in the first position, i.e., when the panel 8 covers the front 47 of the pump unit 4, the user can easily see the display of the indicator light 45 through the transparent portion 84 and can check the operating status of the pump unit 4.

[0111] As shown in FIGS. 14 and 15 , the panel 8 may have a space 85 located between the pump unit 4 and the housing 9. The space 85 is located between a first side surface 48 orthogonal to the insertion / removal direction (X-axis direction) of the pump unit 4 and a second side surface 910 of the housing 9 facing the first side surface 48. Specifically, the second side surface 910 has a recess 910a recessed from the second side surface 910 toward the third surface 903 at an end of the second side surface 910 on the fifth surface 905 side. The space 85 is formed by the recess 910a and the first side surface 48. In this case, wiring (not shown) connected to the display unit 81 may be located in the space 85. For example, one end of the wiring is connected to the back surface of the display unit 81 and the other end is connected to the control unit 6 (see FIG. 2 ). A signal from the control unit 6 is output to the display unit 81 via the wiring.

[0112] In this way, the panel 8 has a space 85 between the pump unit 4 and the housing 9, and the wiring is positioned in the space 85, making it easier to route the wiring compared to when the space 85 is not provided.

[0113] There may also be a space (not shown) between the first member 8a and the display unit 81. Wiring may be routed within this space. This makes it easier to route the wiring and reduces damage to the wiring compared to when there is no space.

[0114] Although an example in which the panel 8 includes the first member 8a and the second member 8b has been described here, the configuration of the panel 8 is not limited to this. The panel 8 may include only the first member 8a having the display unit 81. In this case as well, the panel 8 is movable between the first position and the second position, so that the panel 8 and the pump unit 4 can be arranged in a limited area.

[0115] In this case, the support portion 8c connected to the first member 8a may include an extension portion (not shown) that connects the support portion 8c and the first member 8a. The extension portion can provide a space between the first member 8a and the housing 9, so that when the panel 8 is in the first position, the handle side portion 412 can be placed in the space between the first member 8a and the housing 9 without coming into contact with the display unit 81.

[0116] <Primary and secondary flow paths> Next, a primary flow path 1 and a secondary flow path 2 according to an exemplary embodiment will be described with reference to Fig. 5 and Figs. 16 to 19. Fig. 16 is a cross-sectional view taken along line XVI-XVI in Fig. 4. Fig. 17 is a cross-sectional view taken along line XVII-XVII in Fig. 4. Fig. 18 is a cross-sectional view taken along line XVIII-XVIII in Fig. 4. Fig. 19 is a cross-sectional view taken along line XIX-XIX in Fig. 4. In Figs. 16 to 19, the primary flow path 1 is indicated by a dashed arrow, and the secondary flow path 2 is indicated by a solid arrow. The direction of the arrows indicates the flow direction of the refrigerant.

[0117] The primary refrigerant flowing through the primary flow path 1 flows in from a primary inlet 1a provided on the rear surface 901 of the CDU 100, flows through the heat exchanger 3, and flows out from a primary outlet 1b.

[0118] As a modification of this embodiment, the primary flow path 1 may be provided with a bypass flow path (not shown) that merges with the primary outlet 1b without flowing into the heat exchanger 3. By providing the bypass flow path, the amount of primary refrigerant flowing into the heat exchanger 3 can be adjusted, thereby preventing the temperature of the heat exchanger 3 from dropping too low and causing condensation.

[0119] The secondary refrigerant flowing through the secondary flow path 2 flows in from a secondary inlet 2a provided on the back surface 901 of the CDU 100, flows into the heat exchanger 3, and then flows into each pump 42 via the distribution manifold 21. The secondary refrigerant pumped by the pump 42 joins together in the collection manifold 22 and flows out from the secondary outlet 2b. In the secondary flow path 2, the flow path from the heat exchanger 3 to the distribution manifold 21 is connected to the tank 5.

[0120] By using the collection manifold 22 and the distribution manifold 21, it is possible to connect the flow paths from the heat exchanger 3 to each pump 42 without providing individual flow paths, which has the effect of saving space.

[0121] 16 and 17, the collection manifold 22 and the distribution manifold 21 are arranged so as to overlap each other in the vertical direction (Z-axis direction). In addition, the collection manifold 22 and the distribution manifold 21 are arranged between the heat exchanger 3 and the pump unit 4 in the X-axis direction. By arranging them in this way, the flow path pipes for the secondary refrigerant flowing out of the heat exchanger 3 can be arranged in a space-saving manner, and the heat exchanger 3 can be made larger.

[0122] 16 and 17, the secondary flow path 2 that extends from the tank 5, power source 10, and collection manifold 22 to the secondary outlet 2b is disposed above the heat exchanger 3. This allows the horizontal space (X-axis direction and Y-axis direction) within the CDU 100 to be allocated to the heat exchanger 3, allowing the heat exchanger 3 to be enlarged and the cooling performance of the CDU 100 to be improved.

[0123] 18, the flow path of the primary flow path 1 from the primary inlet 1a to the heat exchanger 3 and the flow path from the heat exchanger 3 to the primary outlet 1b, and the flow path of the secondary flow path 2 from the secondary inlet 2a to the heat exchanger 3 are arranged between the rear surface 901 and the heat exchanger 3 in the X-axis direction. This has the effect of allowing the flow path pipes of the primary flow path 1 and the secondary flow path 2 to be arranged in a space-saving manner. This makes it easy to increase the size of the heat exchanger 3, and improves cooling performance.

[0124] 18 and 19, heat exchanger 3 has an inlet and outlet for the primary refrigerant and an inlet for the secondary refrigerant on one side surface in the X-axis direction (positive X-axis side), and an outlet for the secondary refrigerant on the other side surface in the X-axis direction (negative X-axis side). Furthermore, pump unit 4 is disposed on the other side in the X-axis direction (negative X-axis side) of heat exchanger 3, which improves the routing of primary flow path 1 and secondary flow path 2.

[0125] 5, the CDU 100 can include control valves 113, 232, 242, and 252, and sensors 111, 112, 114 to 116, 211, 212, 214, and 215. In addition, the CDU 100 can also include sensors of types not described in the drawings in locations not shown.

[0126] The present technology can also be configured as follows. (1) a housing having a flow path through which a refrigerant flows; a pump unit that is insertable into and removable from the housing; a panel located on the housing and having a display unit; Equipped with The panel is movable between a first position where it overlaps with the pump unit and a second position where it does not overlap with the pump unit in the insertion / removal direction of the pump unit. Refrigerant circulation device. (2) The pump unit includes a plurality of pump units, The refrigerant circulation device according to (1), wherein at least one of the pump units overlaps with the panel located at the first position in the insertion / removal direction of the pump unit. (3) the pump unit comprises a handle; the handle is located at a front surface of the pump unit along the insertion / removal direction and protrudes in a direction away from the housing beyond the front surface; The refrigerant circulation device according to (2), wherein the handle overlaps with the panel in the insertion / removal direction of the pump unit when the panel is in the first position. (4) The refrigerant circulation device according to any one of (1) to (3), wherein the panel has a locking portion that restricts movement of the panel from the first position to the second position. (5) The refrigerant circulation device according to any one of (1) to (4), wherein the panel restricts movement of the panel from the second position to the first position. (6) The pump unit includes an indicator light that indicates the operating status of the pump unit, The refrigerant circulation device according to any one of (1) to (5), wherein the panel has a transparent portion that overlaps with the indicator light in the insertion / removal direction of the pump unit when the panel is in the first position. (7) the pump unit includes a handle having two handle sides located on both sides of the pump unit perpendicular to the insertion / removal direction, and a handle actuation part connected to one end of the two handle sides and connecting the two handle sides; When the panel is in the first position, the handle has two handle side portions extending in a vertical direction, and the handle actuation portion is located at a lower portion of a front surface of the pump unit along the insertion / removal direction, The refrigerant circulation device according to (2) or (3), wherein the display unit is located between the two handle side portions and above the handle actuation portion when the panel is located in the first position. (8) The refrigerant circulation device according to any one of (1) to (7), wherein the panel has a plurality of through holes located below the display unit. (9) the panel has a space located between a first side surface of the pump unit that is perpendicular to the insertion / removal direction and a second side surface of the housing that faces the first side surface, The refrigerant circulation device according to any one of (1) to (8), wherein a wiring connected to the display unit is located in the space. (10) The refrigerant circulation device according to any one of (1) to (9), wherein the display unit has an operation surface that accepts operations by a user. [Explanation of symbols]

[0127] 1 Primary flow path 2 Secondary flow path 3 Heat exchanger 4 Pump Unit 5 Tank 8 Panels 9. Cabinet 41 Handle 45 Indicator light 46 Regulatory Department 48 First aspect 81 Display section 83 Rock Club 84 Transparent part 85 Space 100 CDU 411 Handle operating part 412 Handle side 910 Second side

Claims

1. a housing having a flow path through which a refrigerant flows; a pump unit that is insertable into and removable from the housing; a panel located on the housing and having a display unit; Equipped with the panel is movable between a first position where it overlaps with the pump unit and a second position where it does not overlap with the pump unit in the insertion / removal direction of the pump unit; Refrigerant circulation device.

2. The pump unit includes a plurality of pump units, The refrigerant circulation device according to claim 1 , wherein at least one of the pump units overlaps with the panel located at the first position in the insertion / removal direction of the pump unit.

3. the pump unit comprises a handle; the handle is located at a front surface of the pump unit along the insertion / removal direction and protrudes in a direction away from the housing beyond the front surface; The refrigerant circulation device according to claim 2 , wherein the handle overlaps with the panel in the insertion / removal direction of the pump unit when the panel is in the first position.

4. The refrigerant circulation device according to claim 1 , wherein the panel has a locking portion that restricts movement of the panel from the first position to the second position.

5. The refrigerant circulation device according to claim 1 , wherein the panel restricts movement of the panel from the second position to the first position.

6. The pump unit includes an indicator light that indicates the operating status of the pump unit, The refrigerant circulation device according to claim 1 , wherein the panel includes a transmission portion that overlaps with the indicator light in the insertion / removal direction of the pump unit when the panel is in the first position.

7. the pump unit includes a handle having two handle sides located on both sides of the pump unit perpendicular to the insertion / removal direction, and a handle actuation part connected to one end of the two handle sides and connecting the two handle sides; When the panel is in the first position, the two handle side portions extend in a vertical direction, and the handle actuation portion is located at a lower portion of a front surface of the pump unit along the insertion / removal direction, The refrigerant circulation device according to claim 1 , wherein the display unit is located between the two handle side units and above the handle actuation unit when the panel is located in the first position.

8. The refrigerant circulation device according to claim 1 , wherein the panel has a plurality of through holes positioned below the display portion.

9. the panel has a space located between a first side surface of the pump unit that is perpendicular to the insertion / removal direction and a second side surface of the housing that faces the first side surface, The refrigerant circulation device according to claim 1 , wherein a wiring connected to the display unit is located in the space.

10. The refrigerant circulation device according to claim 1 , wherein the display unit has an operation surface that accepts operations by a user.

Images