Phase change energy storage type efficient energy-saving cooler

Abstract

The utility model relates to a phase change energy storage type efficient energy-saving cooler, which belongs to the technical field of cabinet energy-saving coolers, and comprises a static pressure cabinet, a heat exchange cabinet, an air supply cabinet and a phase change energy storage device, the static pressure cabinet is provided with an external cold source air inlet and a first air outlet, the heat exchange cabinet is provided with a first air inlet and a second air outlet, and the air supply cabinet is provided with a second air outlet. The static pressure cabinet is provided with a first air inlet and a second air inlet, the air supply cabinet is provided with an air feeder and a third air outlet, the first air outlet is communicated with the first air inlet, the second air outlet is communicated with the air feeder, and the phase change energy storage device is arranged in the heat exchange cabinet. When the phase change energy storage device stores cold and the air conditioner is in a standby state, cold energy stored by the phase change energy storage device serves as a standby cold source and exchanges heat with air from the static pressure cabinet under the action of the air feeder to form cooling air, then the cooling air is blown to a cabinet space needing to be cooled through the air supply cabinet, and the restarting time of the external cold source is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cabinet energy-saving cooler, especially relates to a phase change energy storage type high -efficient energy -saving cooler. BACKGROUND

[0002] In the field of 5G communication base station, data center server cabinet and energy storage battery cabinet, power distribution cabinet and other fields, there are a large number of closed cabinets or machine rooms, due to the existence of high-power power electronic equipment including power supply, power amplifier, high heat flux density computing chip, energy storage battery in the cabinet, leading to heat accumulation in the cabinet, when the temperature exceeds the bearing limit of the equipment, causing the equipment operating efficiency to decline or even overheat and burn out, therefore, high-efficiency cooling temperature control technology is needed for high-power equipment cabinet.

[0003] At present, the mainstream equipment cabinet temperature control technology is to install air conditioners in the cabinet to cool the environment space in the cabinet, however, with the continuous increase and performance improvement of power equipment in the cabinet, the total power of heat generation in the cabinet is also getting larger, and the original air conditioning system is difficult to meet the high-efficiency temperature control demand. Generally, the air conditioning refrigeration system automatically adjusts the load of the air conditioner according to the temperature in the cabinet, when the temperature in the cabinet is lower than the set value, the air conditioning system is closed, when the temperature in the cabinet is higher than the set value, the air conditioner is started again, causing the air conditioner to start and stop frequently, which seriously affects the service life of the air conditioner, especially in hot summer, due to the increase of outdoor ambient temperature, the energy efficiency ratio of the air conditioner decreases, and the energy consumption increases. Therefore, reducing the start-stop frequency of the air conditioner helps to improve its reliability and service life, and reducing the absolute time length of the air conditioner operation is the main way to reduce energy consumption.

[0004] Therefore, a phase change energy storage type high-efficiency energy-saving cooler that can prolong the start-stop interval time of the air conditioner and prolong the service life of the air conditioner is urgently needed. INVENTION CONTENTS

[0005] The utility model provides a phase change energy storage type high-efficiency energy-saving cooler to solve the technical problem of frequent start-stop of the air conditioner for cabinet cooling in the prior art.

[0006] The utility model discloses a phase change energy storage type high-efficiency energy-saving cooler, including static pressure cabinet, heat exchange cabinet, air supply cabinet and phase change energy storage device, the static pressure cabinet is equipped with external cold source air inlet and first air outlet, the heat exchange cabinet is equipped with first air inlet and second air outlet, the air supply cabinet is equipped with air supply fan and third air outlet, the first air outlet communicates the first air inlet, the second air outlet communicates the air supply fan, the phase change energy storage device is arranged in the heat exchange cabinet.

[0007] To better realize this utility model, further optimizations are made to the above structure. The phase change energy storage device is a phase change energy storage tube, which is erected in the heat exchange cabinet. The bottom of the phase change energy storage tube is closed and a breather valve is provided at the top. The phase change energy storage tube is filled with solid-liquid phase change energy storage material.

[0008] To better realize this utility model, the above structure is further optimized by including fins, and multiple fins are uniformly fixed outside the phase change energy storage tube.

[0009] To better realize this utility model, the above structure is further optimized. The number of phase change energy storage tubes is multiple, and the multiple phase change energy storage tubes are arranged in an array inside the heat exchange cabinet.

[0010] To better realize this utility model, the above structure is further optimized by including a support plate. The support plate is fixed inside the heat exchange cabinet by a column. The support plate is evenly provided with a plurality of mounting holes, and a plurality of phase change energy storage tubes are erected on the support plate through the mounting holes.

[0011] To better realize this utility model, further optimizations are made to the above structure. An external fresh air inlet and a return air outlet are provided on one side of the static pressure cabinet, and both the external fresh air inlet and the return air outlet are equipped with regulating valves.

[0012] To better realize this utility model, the above structure is further optimized by including a uniform air distribution grid and air supply louvers. The uniform air distribution grid is installed at the first air outlet, and the air supply louvers are installed at the third air outlet.

[0013] To better realize this utility model, further optimizations are made to the above structure, and both the static pressure cabinet and the heat exchange cabinet are equipped with maintenance doors.

[0014] To better realize this utility model, further optimizations are made to the above structure. The second air outlet is a circular air outlet with the same shape and size as the blower. The air supply cabinet is provided with a mounting hole corresponding to the position of the second air outlet, and the blower is installed in the mounting hole.

[0015] To better realize this utility model, the above structure is further optimized, and the number of the second air outlet and the blower is the same, and there are at least two.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This utility model provides a phase change energy storage type high-efficiency energy-saving cooler, which includes a static pressure cabinet, a heat exchange cabinet, an air supply cabinet, and a phase change energy storage device. The static pressure cabinet is provided with an external cold source air inlet and a first air outlet. The heat exchange cabinet is provided with a first air inlet and a second air outlet. The air supply cabinet is provided with a blower and a third air outlet. The first air outlet is connected to the first air inlet, and the second air outlet is connected to the blower. The phase change energy storage device is installed inside the heat exchange cabinet. With this structure, when the air conditioner is running, the cold air from the air conditioner enters the heat exchange cabinet through the external cold source air inlet and the static pressure cabinet, and exchanges heat with the phase change energy storage device, allowing the phase change energy storage device to store cold. When the air conditioner is in standby mode, the cold energy stored in the phase change energy storage device serves as a backup cold source. Under the action of the blower, it exchanges heat with the air coming from the direction of the static pressure cabinet to form cooling air, which is then blown through the air supply cabinet to the cabinet space that needs to be cooled. This extends the restart time of the external cold source, reduces the start-up frequency of the external cold source, improves its reliability and lifespan, and makes this utility model more practical. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the phase change energy storage high-efficiency energy-saving cooler of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the static pressure cabinet in this utility model;

[0021] Figure 3 This is a structural schematic diagram of the heat exchanger cabinet in this utility model;

[0022] Figure 4 This is a structural schematic diagram of the heat exchanger cabinet in this utility model from another direction;

[0023] Figure 5 This is a structural schematic diagram of the air supply cabinet in this utility model;

[0024] Figure 6 This is a schematic diagram of the air supply cabinet from another direction in this utility model;

[0025] Figure 7 This is a schematic diagram of the phase change energy storage tube in this utility model.

[0026] In the picture:

[0027] 1-Static pressure cabinet; 2-Heat exchange cabinet; 3-Air supply cabinet; 4-Phase change energy storage tube; 5-External cold source air inlet; 6-First air outlet; 7-First air inlet; 8-Second air outlet; 9-Air supply fan; 10-Third air outlet; 11-Breathing valve; 12-Fins; 13-Support plate; 14-External fresh air inlet; 15-Return air outlet; 16-Equal flow distribution grid; 17-Air supply louvers; 18-Inspection door; 19-Regulating valve. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1:

[0032] In this embodiment, a phase change energy storage type high-efficiency energy-saving cooler, such as... Figures 1 to 7As shown, the device includes a static pressure cabinet 1, a heat exchange cabinet 2, an air supply cabinet 3, and a phase change energy storage device. Specifically, the static pressure cabinet 1, heat exchange cabinet 2, and air supply cabinet 3 are connected in sequence. The static pressure cabinet 1 is provided with an external cold source air inlet 5 and a first air outlet 6. The external cold source is an air conditioner. The external cold source air inlet 5 is located at the top of the static pressure cabinet 1. The first air outlet 6 is located on the side of the static pressure cabinet 1 connected to the heat exchange cabinet 2. The heat exchange cabinet 2 is provided with a first air inlet 7 and a second air outlet 8. The first air inlet 7 is located on the side of the heat exchange cabinet 2 connected to the static pressure cabinet 1. The second air outlet 8 is located on the side of the heat exchange cabinet 2 connected to the air supply cabinet 3. The air supply cabinet 3 is equipped with a blower 9 and a third air outlet 10. The blower 9 is located on the side of the air supply cabinet 3 connected to the heat exchange cabinet 2. The third air outlet 10 is located on the other side of the air supply cabinet 3 and faces the cabinet. The first air outlet 6 is connected to the first air inlet 7. The second air outlet 8 is connected to the blower 9. The phase change energy storage device is installed inside the heat exchange cabinet 2. The phase change energy storage device is used to exchange heat with the flowing air to achieve the function of storing or releasing cold energy.

[0033] With this structure, when the air conditioner is running, the cold air from the air conditioner enters the heat exchange cabinet 2 through the external cold source air inlet 5 and the static pressure cabinet 1, where it exchanges heat with the phase change energy storage device, allowing the phase change energy storage device to store cold for standby. When the air conditioner is on standby, the cold energy stored in the phase change energy storage device serves as a backup cold source. Under the action of the blower 9, it exchanges heat with the air coming from the static pressure cabinet 1 to form cooling air, which is then blown through the air supply cabinet 3 to the cabinet space that needs cooling. This extends the restart time of the external cold source, reduces the start-up frequency of the external cold source, improves its reliability and lifespan, and makes the utility model more practical.

[0034] As one specific implementation method of this embodiment, such as Figure 1 and Figure 4 As shown, the phase change energy storage device is a phase change energy storage tube 4, which is erected inside the heat exchange cabinet 2. The bottom of the phase change energy storage tube 4 is closed and the top is equipped with a breather valve 11. The phase change energy storage tube 4 is filled with solid-liquid phase change energy storage material. The solid-liquid phase change energy storage material can exchange heat with the outside through solid-liquid phase change to achieve the function of storing cold and releasing cold energy. It is preferably a straight-chain alkane or an inorganic salt. The air conditioner blows cold air through the phase change energy storage tube 4 and exchanges heat with it, so that the solid-liquid phase change energy storage material stores cold. The breather valve 11 connects the space inside the phase change energy storage tube 4 with the space inside the heat exchange cabinet 2. The breather valve 11 is used to balance the pressure between the solid-liquid phase change energy storage material space inside the phase change energy storage tube 4 and the external environment, so as to prevent the phase change energy storage tube 4 from overpressure rupture or depressurization deformation when the solid-liquid phase change energy storage material undergoes phase change and the volume change of the phase change material changes.

[0035] In this embodiment, as Figure 7As shown, it also includes fins 12, which are annular structures. Multiple fins 12 are uniformly fitted around the phase change energy storage tube 4. The fins 12 increase the surface area of ​​the phase change energy storage tube 4, thereby increasing the structural area with the incoming air, improving the heat exchange area and efficiency, and thus improving the heat storage efficiency or heat dissipation efficiency of the solid-liquid phase change cold storage material.

[0036] As an optimization, the number of the aforementioned phase change energy storage tubes 4 is multiple, and the multiple phase change energy storage tubes 4 are arranged in an array inside the aforementioned heat exchange cabinet 2. The cold storage capacity of the multiple phase change energy storage tubes 4 is greatly improved, thereby providing a larger amount of cold energy when the air conditioner is in standby mode, which further extends the restart time of the external cold source, reduces the start-up frequency of the external cold source, and provides better protection for the external air conditioner.

[0037] In this embodiment, as Figure 4 As shown, it also includes a support plate 13, which is fixed inside the heat exchanger 2 by a support column. The support plate 13 is evenly provided with a plurality of mounting holes, and a plurality of phase change energy storage tubes 4 are erected on the support plate 13 through the mounting holes. The support plate 13 arranges the plurality of phase change energy storage tubes 4 in an array inside the heat exchanger 2, so that all the air entering the heat exchanger 2 can exchange heat with the phase change energy storage tubes 4 to the maximum extent. The support plate 13 suspends the plurality of phase change energy storage tubes 4 inside the heat exchanger 2, which can increase the contact area between the phase change energy storage tubes 4 and the air.

[0038] As a preferred embodiment of this example, Figure 1 and Figure 2 As shown, the aforementioned static pressure cabinet 1 has an external fresh air inlet 14 and a return air outlet 15 on one side. Both the external fresh air inlet 14 and the return air outlet 15 are equipped with regulating valves 19. When the external cooling source air conditioner is working normally, the regulating valves 19 are closed, preventing airflow between the external fresh air inlet 14 and the return air outlet 15. When the external cooling source equipment malfunctions, if the external natural ventilation temperature is lower than the phase change temperature of the solid-liquid phase change energy storage material inside the phase change energy storage pipe 4, the regulating valve 19 of the external fresh air inlet 14 is opened. At this time, under the action of the aforementioned blower 9, external natural fresh air flows through the aforementioned... External fresh air inlet 14 enters the static pressure cabinet 1, and then enters the heat exchange cabinet 2, storing the cold energy carried by the external natural fresh air in the solid-liquid phase change energy storage material in the phase change energy storage tube 4. When the temperature of the external natural fresh air rises, the regulating valve 19 of the external fresh air inlet 14 on the static pressure chamber is closed, and the regulating valve 19 of the return air outlet 15 is opened. Through the circulating air path formed by the third air outlet 10 and the return air outlet 15, the cold stored in the phase change energy storage tube 4 is extracted to achieve continuous cooling, thereby reducing the start-up and operation time of the air conditioner and realizing energy saving of the air conditioning system.

[0039] To achieve better uniform air distribution, in this embodiment, as follows: Figure 1 , Figure 2 and Figure 5 As shown, it also includes a uniform air distribution grid 16 and air supply louvers 17. The uniform air distribution grid 16 is installed at the first air outlet 6, and the air supply louvers 17 are installed at the third air outlet 10. The uniform air distribution grid 16 is used to evenly distribute the cold air from the air conditioner or the external fresh air from the external fresh air inlet 14 into the heat exchange cabinet 2 so as to fully exchange heat with the multiple phase change energy storage tubes 4 evenly distributed in the heat exchange cabinet 2. The air supply louvers 17 are used to evenly blow the cold air from the heat exchange cabinet 2 into the cabinet space that needs to be cooled.

[0040] In this embodiment, as Figure 3 and Figure 6 As shown, the second air outlet 8 is a circular air outlet with the same shape and size as the blower 9. The air supply cabinet 3 is provided with mounting holes corresponding to the position of the second air outlet 8. The blower 9 is installed in the mounting holes. This arrangement facilitates the convergence of the air after heat exchange through the phase change energy storage tube 4 to the blower 9, which is then blown by the blower 9 to the air supply cabinet 3. Finally, the air supply louvers 17 evenly disperse the air into the cabinet space for cooling. Preferably, the number of the second air outlet 8 and the blower 9 is the same, and there are at least two of them.

[0041] In this embodiment, both the static pressure cabinet 1 and the heat exchange cabinet 2 are equipped with inspection doors 18 to facilitate the maintenance and repair of the equipment inside the static pressure cabinet 1 and the heat exchange cabinet 2.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A phase change energy storage type high-efficiency energy-saving cooler, characterized in that: The device includes a static pressure cabinet (1), a heat exchange cabinet (2), an air supply cabinet (3), and a phase change energy storage device. The static pressure cabinet (1) is provided with an external cold source air inlet (5) and a first air outlet (6). The heat exchange cabinet (2) is provided with a first air inlet (7) and a second air outlet (8). The air supply cabinet (3) is provided with a blower (9) and a third air outlet (10). The first air outlet (6) is connected to the first air inlet (7), and the second air outlet (8) is connected to the blower (9). The phase change energy storage device is installed inside the heat exchange cabinet (2).

2. The phase change energy storage type high-efficiency energy-saving cooler according to claim 1, characterized in that: The phase change energy storage device is a phase change energy storage tube (4), which is erected in the heat exchange cabinet (2). The bottom of the phase change energy storage tube (4) is closed and the top is equipped with a breather valve (11). The phase change energy storage tube (4) is filled with solid-liquid phase change energy storage material.

3. The phase change energy storage type high-efficiency energy-saving cooler according to claim 2, characterized in that: It also includes fins (12), and multiple fins (12) are uniformly fitted around the phase change energy storage tube (4).

4. The phase change energy storage type high-efficiency energy-saving cooler according to claim 3, characterized in that: The number of phase change energy storage tubes (4) is multiple, and the multiple phase change energy storage tubes (4) are arranged in an array inside the heat exchange cabinet (2).

5. A phase change energy storage type high-efficiency energy-saving cooler according to claim 4, characterized in that: It also includes a support plate (13), which is fixed inside the heat exchange cabinet (2) by a support column. The support plate (13) is evenly provided with multiple mounting holes, and multiple phase change energy storage tubes (4) are erected on the support plate (13) through the mounting holes.

6. The phase change energy storage type high-efficiency energy-saving cooler according to claim 1, characterized in that: The static pressure cabinet (1) is provided with an external fresh air inlet (14) and a return air outlet (15) on one side, and both the external fresh air inlet (14) and the return air outlet (15) are provided with regulating valves (19).

7. A phase change energy storage type high-efficiency energy-saving cooler according to any one of claims 1-6, characterized in that: It also includes a uniform air distribution grid (16) and air supply louvers (17), wherein the uniform air distribution grid (16) is installed at the first air outlet (6) and the air supply louvers (17) are installed at the third air outlet (10).

8. A phase change energy storage type high-efficiency energy-saving cooler according to claim 7, characterized in that: Both the static pressure cabinet (1) and the heat exchange cabinet (2) are equipped with inspection doors (18).

9. A phase change energy storage type high-efficiency energy-saving cooler according to claim 7, characterized in that: The second air outlet (8) is a circular air outlet with the same shape and size as the blower (9). The air supply cabinet (3) is provided with a mounting hole corresponding to the position of the second air outlet (8), and the blower (9) is installed in the mounting hole.

10. A phase change energy storage type high-efficiency energy-saving cooler according to claim 9, characterized in that: The number of the second air outlet (8) and the blower (9) is the same, and there are at least two of them.

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