CN114485230A - Heat pipe heat exchange device, heat exchange system and temperature regulation control method - Google Patents

Abstract

The invention discloses a heat pipe heat exchange device, a heat exchange system and a temperature regulation control method, relates to the technical field of liquid cooling devices, can greatly improve the heat dissipation efficiency of a cabinet, ensures the uniformity of the temperature in the cabinet while realizing high-temperature heat dissipation, and also avoids the adverse effect of particles in the air on a server. The heat pipe heat exchange device comprises a first shell and a heat pipe exchanger, wherein a closed space is formed in the first shell, a heating element and cooling liquid are arranged in the first shell, a first circulating refrigerant flows in the heat pipe exchanger, the heat pipe exchanger comprises an evaporation section and a condensation section, the evaporation section is located in the closed space and is close to the heating element, the condensation section is located outside the closed space, and the cooling liquid submerges the heating element and the evaporation section.

Description

Heat pipe heat exchange device, heat exchange system and temperature regulation control method

Technical Field

The invention relates to the technical field of liquid cooling devices, in particular to a heat pipe heat exchange device, a heat exchange system and a temperature regulation control method.

Background

Data Center (Internet Data Center, abbreviated as IDC) machine room has become an important component in economic development, and is an infrastructure for promoting scientific and technical industry informatization and digitization. With the increase of the scale of the data center and the popularization of the blade server with high heating power, the installed power and the heat density of a cabinet in the data center are increased rapidly, on one hand, the heat dissipation of the server with high heat density becomes a problem to be solved urgently, and if the heat dissipation is carelessly processed, equipment shutdown may be caused by overheating of the equipment, so that huge loss is caused; on the other hand, the power of the refrigeration equipment required by heat dissipation is improved in multiples, and the energy consumption of the data center is further increased.

At present, when a data room is cooled, an air-cooled air conditioning system is generally adopted to cooperate with corresponding cold and hot airflow channels to cool a heating source (namely, a server) in a cabinet in the data room.

However, this air-cooled system has several significant drawbacks: firstly, due to poor heat exchange performance of air, a lower air supply temperature is required for ensuring the normal operation of a high-heat-density server, which increases the operation energy consumption of an air conditioning system, thereby causing the increase of the heat dissipation energy consumption of the existing data center; secondly, as the space in the cabinet is narrow and the airflow organization is not good, local high-temperature hot spots are easy to occur in the cabinet, the safe operation of IT equipment such as a server is affected, and in order to eliminate the local hot spots, the air supply quantity of the air conditioner is increased, the air supply temperature is reduced, and the like, so that the energy consumption of the air conditioning system is further increased; thirdly, since the data center has a high requirement for the degree of air cleanliness, substances such as dust, sulfur oxides, and nitrogen oxides adhere to electronic components of the server due to long-term air movement, which leads to an increase in the failure rate of the server and a reduction in the service life of the server.

Disclosure of Invention

The heat pipe heat exchange device, the heat exchange system and the temperature regulation control method provided by the embodiment of the invention can greatly improve the heat dissipation efficiency of the cabinet, ensure the uniformity of the temperature in the cabinet while realizing high-temperature heat dissipation, and simultaneously avoid the adverse effect of particles in the air on the server.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a heat pipe heat exchanging apparatus provided in an embodiment of the present invention includes a first housing and a heat pipe heat exchanger, where a closed space is formed in the first housing, and a heating element and a cooling liquid are disposed, a first circulating refrigerant flows through the heat pipe heat exchanger, the heat pipe heat exchanger includes an evaporation section and a condensation section, the evaporation section is located in the first housing and is close to the heating element, the condensation section is located outside the first housing, and the cooling liquid immerses the heating element and the evaporation section.

Optionally, the evaporation section includes an evaporation main pipe and a plurality of evaporation branch pipes, and the plurality of evaporation branch pipes are connected in parallel and communicated with the evaporation main pipe.

Optionally, the evaporation branch pipes are arranged close to the heating elements, and the number of the evaporation branch pipes is positively correlated with the heating value of the heating elements.

Optionally, the plurality of evaporation branch pipes are all straight pipes.

Optionally, the plurality of evaporation branch pipes extend along a first direction, and the first direction is parallel to or perpendicular to the side wall of the first shell.

Optionally, the heat pipe heat exchanger is a wick type heat pipe heat exchanger, and includes a capillary wick attached to the inner wall.

Optionally, the heat pipe heat exchanger is a gravity type heat pipe heat exchanger, and the position of the condensation section is higher than that of the evaporation section.

Optionally, the heat pipe heat exchangers and the first shells are multiple, and the evaporation sections of the heat pipe heat exchangers are arranged in the multiple first shells in a one-to-one correspondence manner.

In a second aspect, an embodiment of the present invention further provides a heat exchange system, including any one of the heat pipe heat exchange devices in the first aspect.

Optionally, the condenser further comprises a circulating device for circulating a second refrigerant, the circulating device comprises a second heat exchanger and a communicated circulating pipeline, and the second refrigerant is used for exchanging heat with the condensing section.

Optionally, the circulating pipeline system further comprises an electric control valve, a temperature sensor and a controller, wherein the electric control valve is arranged on the circulating pipeline, the temperature sensor is arranged in the first shell, and the controller is connected with the electric control valve and the temperature sensor respectively.

Optionally, the system further comprises a reheating utilization device, wherein the reheating utilization device comprises a third heat exchanger, and the third heat exchanger is arranged at a liquid return pipe of the circulating pipeline and is respectively communicated with the water supply pipe and the water return pipe.

According to the heat pipe heat exchange device and the heat exchange system provided by the embodiment of the invention, the heat pipe heat exchange device comprises a first shell and a heat pipe heat exchanger, wherein a closed space is formed in the first shell, and a heating element and cooling liquid are arranged in the first shell; a circulating first refrigerant flows in the heat pipe heat exchanger, specifically, the heat pipe heat exchanger comprises an evaporation section and a condensation section, the evaporation section is positioned in the first shell and is close to the heating element, the condensation section is positioned outside the first shell, and the cooling liquid submerges the heating element and the evaporation section; therefore, heat generated by the heating element can be directly led into the cooling liquid, the evaporation section immersed in the cooling liquid can absorb the heat in the cooling liquid, and the heat is transferred to the condensation section outside the first shell through the circulating first refrigerant, so that the heat dissipation of the first shell is realized.

Compared with an air-cooling heat dissipation scheme of conducting heat through air, in the heat exchange system provided by the embodiment of the invention, in the process of transferring heat in the first shell from inside to outside, the heat transfer path only comprises two efficient heat transfer schemes of solid-liquid and liquid-solid, so that the heat dissipation efficiency is greatly improved, the high-load operation of an air conditioner can be avoided, and the operation energy consumption is further saved; simultaneously, the setting in airtight space has avoided the coolant liquid in the first casing to contact with the external world, can also effectively avoid the particulate matter in the air to heating element's adverse effect.

And, because the evaporation zone in the first casing is close to heating element setting, so, can reduce heating element to the thermal transfer route of evaporation zone, when improving the radiating efficiency, avoided setting up the energy consumption waste that the power cycle system of coolant liquid brought and to heating element's influence in first casing, further improved this heat transfer system's radiating efficiency.

In a third aspect, an embodiment of the present invention further provides a temperature adjustment control method, which is used for adjusting the temperature of the heat exchange system in the second aspect, and includes the following steps:

when the temperature detected by the temperature sensor is smaller than a first preset value, the controller controls the electric control valve corresponding to the temperature sensor to reduce the opening of the valve;

when the temperature detected by the temperature sensor is greater than a second preset value, the controller controls the electric control valve corresponding to the temperature sensor to increase the valve opening;

when the temperature detected by the temperature sensor is greater than or equal to a first preset value and less than or equal to a second preset value, the controller controls the electric control valve corresponding to the temperature sensor to keep the opening of the valve unchanged;

wherein the first preset value is smaller than the second preset value.

According to the control method for temperature regulation provided by the third aspect of the embodiment of the invention, the opening of the corresponding electric valve can be controlled and regulated through the controller according to the internal temperature of the closed space, so that the dynamic control of the heat exchange system in the aspect of temperature control is realized, the heat dissipation effect of the closed space is not influenced while the temperature in the closed space is accurately controlled, the operating power of the heat exchange system is enabled to be more in line with the actual requirement, and the energy consumption level of the heat exchange system is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a heat pipe heat exchange device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a heat exchange system according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a heat exchange system including a plurality of heat pipe heat exchangers according to an embodiment of the present invention;

fig. 4 is a second schematic structural diagram of a heat exchange system including a plurality of heat pipe heat exchange devices according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more and "plural groups" means two or more groups unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Data center rooms typically rely on air conditioning systems to regulate the temperature inside so that servers inside the racks always operate at an optimum ambient temperature.

In a first aspect, the present invention provides a heat pipe heat exchanging apparatus, as shown in fig. 1, including:

the first casing 111 and the heat pipe heat exchanger form a closed space in the first casing 111, and are provided with a heating element and a coolant. The first shell 111 may be a fully-enclosed rack shell in a cabinet in a data center machine room, as shown in fig. 3, used for installing a server, a power module or a routing module, may be another fully-enclosed shell, or may be an integrated closed cabinet; the heating element may be a Central Processing Unit (CPU), a hard disk, a capacitor, or other heating devices on the server motherboard, or may be a heating device in the power module or the routing module; the cooling liquid must be a non-conductive and non-corrosive liquid, such as deionized water, silicone oil, or an electron fluorinated liquid.

The heat pipe heat exchanger 112 is configured to circulate a first refrigerant in the heat pipe heat exchanger 112, where the heat pipe heat exchanger 112 includes an evaporation section 1121 and a condensation section 1123, the first refrigerant vaporizes at the evaporation section 1121 to absorb heat, then the gaseous first refrigerant moves to the condensation section 1123 and is liquefied at the condensation section 1123 to release heat, and then the liquefied first refrigerant returns to the evaporation section 1121, so that circulation of the first refrigerant is completed; further, the evaporation section 1121 is disposed in the first housing 111 at a position close to the heat generating elements, and the condensation section 1123 is disposed outside the first housing 111, so that the heat generating elements and the evaporation section 1121 are immersed in the coolant.

Therefore, in the heat pipe heat exchanging device provided in the embodiment of the present invention, heat generated by the heating element may be directly introduced into the cooling liquid, and the evaporation section 1121 immersed in the cooling liquid may absorb heat in the cooling liquid and transfer the heat to the condensation section 1123 outside the first casing 111 through the circulating first refrigerant, so as to achieve heat dissipation of the first casing 111.

Compared with an air-cooling heat dissipation scheme for conducting heat through air, the heat pipe heat exchange device provided by the embodiment of the invention has the advantages that in the process of transferring heat in the first shell 111 from inside to outside, the heat transfer path only comprises two efficient heat transfer schemes of solid-liquid and liquid-solid, so that the heat dissipation efficiency is greatly improved, the high-load operation of an air conditioner can be avoided, and the operation energy consumption is further saved; meanwhile, the arrangement of the closed space avoids the contact between the cooling liquid in the first shell 111 and the outside, and the adverse effect of particles in the air on the heating element can be effectively avoided.

Moreover, since the evaporation section 1121 in the first housing 111 is disposed close to the heating element, a heat transfer path from the heating element to the evaporation section 1121 can be reduced, so that the heat dissipation efficiency is improved, and meanwhile, the energy consumption waste and the influence on the heating element caused by a power cycle system in which a cooling liquid is disposed in the first housing 111 are avoided, and the heat dissipation efficiency of the heat pipe heat exchanger is further improved.

As shown in fig. 1, the evaporation section 1121 is disposed in the first casing 111, and the evaporation section 1121 includes an evaporation main pipe 11211 and a plurality of evaporation branch pipes 11212, and the plurality of evaporation branch pipes 11212 are connected in parallel to the evaporation main pipe 11211. In this way, the additionally arranged evaporation branch pipes 11212 can be used for increasing the heat exchange area between the heat exchanger 112 and the cooling liquid, thereby greatly improving the heat exchange efficiency. Specifically, the first refrigerant is gasified to absorb heat in the evaporation section 1121, and then converges at the evaporation main pipes 11211 communicated with the evaporation branch pipes 11212, a connecting pipeline is arranged between the evaporation main pipes 11211 and the condensation section 1123, the gasified first refrigerant enters the condensation section 1123 through the connecting pipeline to be liquefied and release heat, the liquefied first refrigerant returns to the evaporation section 1121 through the connecting pipeline, and flows into the evaporation branch pipes 11212 through parallel connection ports at the evaporation main pipes 11211, and the circulation is repeated, so that the heat in the first shell 111 is efficiently transferred to the outside of the first shell 111.

In order to further increase the heat exchange effect, in the first casing 111, the evaporation branch pipes 11212 are disposed close to the heat generating elements; for example, a server motherboard is fixed on the bottom plate in the first housing 111, and a plurality of heating elements, such as a cpu, a solid state disk, a capacitor, etc., are installed on the motherboard, and the evaporation branch pipe 11212 is disposed above and adjacent to the heating elements, since the evaporation branch pipe 11212 and the heating elements are both immersed in the cooling liquid, and the evaporation branch pipe 11212 is disposed close to the heating elements, the heat transfer effect from the evaporation section 1121 by the heating elements is further increased. Wherein, the number of the arranged evaporation branch pipes 11212 is positively correlated with the heat generation amount of the heating elements, i.e. the larger the heat generation amount of the heating elements is, the larger the number of the arranged evaporation branch pipes 11212 is, the smaller the heat generation amount of the heating elements is, the smaller the number of the arranged evaporation branch pipes 11212 is; therefore, the heating value of different areas in the first shell 111 can be reasonably absorbed, so that the first shell 111 can be cooled, and the uniformity of the temperature in the first shell 111 can be ensured.

In addition, the heat exchange effect can be increased by changing other conditions, for example, the manufacturing material of the heat pipe heat exchanger is improved, for example, the heat pipe heat exchanger is manufactured by copper or aluminum materials, and the heat pipe heat exchanger manufactured by the material has a good heat exchange effect because copper and aluminum have good heat conductivity coefficients. The contact area between the evaporation section 1121 and the cooling liquid can be increased, so that the heat exchange efficiency is improved, specifically, the evaporation branch pipes 11212 are arranged to be capillary pipe bundles, that is, the number of the pipe bundles is increased while the cross-sectional area of the pipe bundles is reduced, so that the contact area between the evaporation branch pipes 11212 and the cooling liquid can be greatly increased, and the heat exchange efficiency is improved; fins can be arranged on the outer wall of the evaporation branch pipe 11212 or the evaporation main pipe 11211, and the arrangement of the fins in direct contact with the outer wall of the pipeline can greatly increase the contact area, so that the heat exchange efficiency of the heat pipe heat exchanger 112 is improved.

As shown in fig. 1, the specific arrangement of the evaporation main pipe 11211 and the evaporation branch pipe 11212 is not particularly limited, and may be any arrangement as long as the self-circulation flow of the first refrigerant in the heat pipe heat exchanger 112 can be achieved. For example, the evaporation branch pipes 11212 and the evaporation main pipes 11211 may be configured as branch pipes, curve-like bent pipes, broken-line pipes, etc., as long as the evaporation branch pipes 11212 can be close to the heat generating elements, thereby satisfying the efficient heat transfer effect. However, since the first casing 111 is generally used as an integrated enclosure for a server, which is often rectangular parallelepiped in shape, in the present embodiment, the evaporation branch pipes 11212 and the evaporation main pipes 11211 are both straight pipes; further, defining the plurality of evaporation branch pipes 11212 to be arranged along a first direction, and the first direction being near-parallel or perpendicular to the side wall of the first housing 111 (i.e. rectangular parallelepiped box), optimizes the arrangement of the evaporation branch pipes 11212 in the first housing 111.

With continued reference to fig. 1, the evaporating branch pipes 11212 and the evaporating main pipe 11211 are vertically disposed in a close-up manner, such that the overall shape of the evaporating section 1121 is approximately rectangular, and is similar to the cross-section of the server box, thereby facilitating the arrangement of the modular solution.

Since the evaporation section 1121 is disposed inside the first shell 111 and the condensation section 1123 is disposed outside the first shell 111, a sidewall of the first shell 111 is spaced between the evaporation section 1121 and the condensation section 1123, that is, a connection pipeline is disposed between the evaporation main pipe 11211 and the condensation section 1123, and a circulation of a first refrigerant between the evaporation section 1121 and the condensation section 1123 is realized through the connection pipeline.

The length of the connecting pipeline may be greater than zero, that is, the evaporation section 1121 and the condensation section 1123 are connected through the intermediate section 1122, that is, the heat pipe heat exchanger 112 is a separate heat pipe heat exchanger, it is obvious that, as shown in fig. 1, at this time, the connecting pipeline (i.e., the intermediate section 1122) passes through the side wall of the first housing 111 through the sealing technology, and both ends of the connecting pipeline are respectively communicated with the evaporation section 1121 and the condensation section 1123, so that the circulation of the first refrigerant between the evaporation section 1121 and the condensation section 1123 is realized through the intermediate section 1122. The length of the connecting pipeline may also be equal to zero, that is, the integral heat pipe heat exchanger is obtained, at this time, the evaporation section 1121 and the condensation section 1123 of the heat pipe heat exchanger 112 are directly communicated through the side wall opening of the first shell 111, and the circulation of the first refrigerant between the evaporation section 1121 and the condensation section 1123 is directly realized.

In addition, heat pipe heat exchangers 112 include wick heat pipe heat exchangers and gravity heat pipe heat exchangers.

The wick heat pipe exchanger further includes a capillary wick structure attached to an inner wall of the heat pipe exchanger 112, and specifically, a layer of wick is attached to the inner wall from the evaporation section 1121 to the condensation section 1123 of the heat pipe exchanger for realizing backflow of the liquid first refrigerant through a capillary action of the wick. Due to the existence of capillary action, the heat pipe exchanger provided with the liquid absorption core can be free from the influence of gravity on the backflow of the liquid first refrigerant, and the structural arrangement is less limited.

And gravity type heat pipe exchanger need not additionally to set up the wick structure, can realize the backward flow of liquid first refrigerant under the effect of gravity, in not having the wick structure, this gravity type heat pipe exchanger structure is simpler, and it is easy to make to avoid the influence of wick structure to liquid first refrigerant velocity of reflux, working property is far above the wick heat pipe moreover promptly. However, the position of the condensation section 1123 of the gravity type heat pipe exchanger must be higher than the position of the evaporation section 1121, so as to realize the backflow of the liquid first refrigerant under the action of gravity.

In this embodiment, as shown in fig. 3, the heat pipe heat exchangers 112 and the first housings 111 are multiple, and the evaporation sections 1121 of the heat pipe heat exchangers 112 are disposed in the multiple first housings 111 in a one-to-one correspondence manner, so as to implement cooling of the heating elements in the first housings 111. It is obvious here that the plurality of first housings 111 are embodied as a multilayer sealing layer inside the cabinet for mounting the servers.

In a second aspect, as shown in fig. 2, an embodiment of the present invention further provides a heat exchange system, including the heat pipe heat exchange device in the first aspect. The heat exchange system can achieve the same technical effects as the heat exchange device of the heat pipe in the first aspect, and the details are not repeated herein.

Specifically, with continued reference to fig. 2, the heat pipe heat exchange system further includes a circulating device for circulating a second refrigerant, the circulating device includes a second heat exchanger 121 and a circulating pipeline 122 communicated with the second heat exchanger, and the second refrigerant can exchange heat with the condensation section 1123 of the heat pipe heat exchanger 112, so that heat of the condensation section 1123 is transferred to the first heat exchanger for cooling.

For example, the heat exchange system may be an air conditioning system, the compressor and the circulation pump included in the circulation device drive the second refrigerant to perform compression and circulation, at this time, the second heat exchanger 121 is an evaporator of the air conditioning system, and is configured to cool the second refrigerant, and then the second refrigerant performs heat exchange with the condensation section 1123 through the circulation pipeline 122, so as to implement cooling of the condensation section 1123. In addition, the heat exchange system may also be only a cooling system, wherein the second heat exchanger 121 in the circulating device is an air-cooled or liquid-cooled cooling device, the second cooling liquid is driven by the circulating pump to be cooled at the second heat exchanger 121, and then the second refrigerant exchanges heat with the condensation section 1123 through the circulating pipeline 122, so as to cool the condensation section 1123.

It should be noted that the heat exchange between the circulation line 122 and the condensing section 1123 includes various implementations. First, the part of the circulation line 122 near the condensation section 1123 can be attached to the condensation section 1123, so as to realize heat exchange; secondly, a part of the circulation line 122 may be disposed inside the condensation section 1123, as shown in fig. 2, thereby achieving heat exchange; thirdly, the heat exchanger further comprises a second shell 124, the condensing section 1123 is disposed in the second shell 124, a second refrigerant for immersing the condensing section 1123 is contained in the second shell 124, and two ends of the circulating pipeline 122 are respectively communicated with two openings of the second shell 124, as shown in fig. 4, the heat exchanger can be regarded as a first heat exchanger, so as to satisfy the heat exchange between the circulating pipeline 122 and the condensing section 1123. The circulation pipelines 122 and the condensation sections 1123 may be in a one-to-one correspondence relationship, or one circulation pipeline 122 may correspond to a plurality of condensation sections 1123, or one condensation section 1123 may correspond to a plurality of circulation pipelines 122, which may be flexibly configured.

In order to control the cooling effect of the heat exchange system, the heat exchange system further comprises an electronic control valve 123, a temperature sensor 113 and a controller (not shown in the figure), wherein the electronic control valve 123 is disposed on the circulation pipeline 122, as shown in fig. 2, the temperature sensor 113 is disposed in the first housing 111, as shown in fig. 1, and the controller is connected to the electronic control valve 123 and the temperature sensor 113 respectively. In this way, the controller may monitor the real-time temperature inside the first casing 111 in real time through the electrically connected temperature sensor 113, adjust the opening of the electrically controlled valve 123 on the circulation line 122 according to the temperature inside the corresponding first casing 111, and control and adjust the cooling temperature corresponding to the first casing 111 by controlling the flow rate of the second refrigerant in the circulation line 122.

In order to accurately control the cooling temperature of each first shell 111, correspondingly, the circulation pipeline 122 includes a primary circulation pipeline and a secondary circulation pipeline, the plurality of secondary circulation pipelines are connected in parallel to the primary circulation pipeline, when the heat exchange system is applied to a data center room scenario, if the second heat exchanger 121 is an outdoor heat exchanger, the primary circulation pipeline supplies the second refrigerant to the data center room or even to each row of cabinets via the second heat exchanger 121, and the secondary circulation pipeline supplies the second refrigerant to the condensation section 1123 in each cabinet via the primary circulation pipeline; an electric control valve 123 is arranged on each corresponding secondary circulation pipeline, and correspondingly, a temperature sensor 113 is arranged in each first shell 111, so that the accurate adjustment and control of the internal temperature of each first shell 111 can be realized through a controller. The electrically controlled valve 123 may be disposed on the liquid supply side or the liquid return side of the circulation pipeline 122, and both of them can achieve the above purpose.

In order to further improve the energy utilization efficiency, the heat exchange system further comprises a reheating utilization device, wherein the reheating utilization device comprises a third heat exchanger 131 arranged on the liquid return side of the circulation pipeline 122 and is respectively communicated with a water supply pipe 132 and a water return pipe 133; like this, the second refrigerant is when passing through condensing section 1123, carry out the heat exchange with condensing section 1123, first refrigerant cooling and second refrigerant temperature rise afterwards, circulate to the liquid return side, when passing through third heat exchanger 131, the higher second refrigerant of temperature carries out the heat exchange with the water that is supplied with by delivery pipe 132 in third heat exchanger 131, heat the water of supplying with, thereby shift the heat to aquatic, and make its temperature rise, and like this, the higher water resource of temperature that flows out by wet return 133 department can be used for resident domestic water, boiler room moisturizing or be used for indoor heating water supply in winter, thereby realize the reuse of heat resources, the waste of a large amount of heat resources is useless has been avoided, and then improve the energy utilization efficiency of data center computer lab greatly.

Wherein, one side of the water return pipe 133 may be further connected in parallel with a water storage tank 134 for storing hot water, so as to temporarily store the hot water which cannot be used in time, thereby avoiding waste of heat resources. In the heat exchange system, the third heat exchanger 131 and the second heat exchanger 121 may coexist, or only the second heat exchanger 121 or the third heat exchanger 131 may be used, which is not limited again.

In a third aspect, an embodiment of the present invention further provides a temperature regulation control method, which is used in the heat exchange system including the electronic control valve 123, the temperature sensor 113 and the controller in the second aspect, and includes the following steps:

when the temperature detected by the temperature sensor 113 is less than a first preset value, the controller controls the electric control valve 123 corresponding to the temperature sensor 113 to reduce the valve opening;

when the temperature detected by the temperature sensor 113 is greater than a second preset value, the controller controls the electric control valve 123 corresponding to the temperature sensor 113 to increase the valve opening;

when the temperature detected by the temperature sensor 113 is greater than or equal to a first preset value and less than or equal to a second preset value, the controller controls the electric control valve 123 corresponding to the temperature sensor 113 to keep the valve opening unchanged;

the first preset value is smaller than the second preset value, the first preset value indicates that the real-time temperature in the first shell 111 is the lowest cooling temperature, and the heat exchange efficiency of the heat exchange system is lower when the real-time temperature is lower than the temperature value; the second preset value indicates that the real-time temperature in the first casing 111 is a higher warning temperature line, and above the temperature value, the second preset value is not favorable for the continuous and stable operation of the heating element in the first casing 111.

According to the control method for temperature regulation provided by the embodiment of the invention, the opening degree of the corresponding electric valve can be controlled and regulated through the controller according to the internal temperature of the first shell 111, so that the dynamic control of the heat exchange system in the aspect of temperature control is realized, the heat dissipation effect of the first shell 111 is not influenced while the temperature in the first shell 111 is accurately controlled, the operating power of the heat exchange system is enabled to be more in line with the actual requirement, and the energy consumption level of the heat exchange system is reduced.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (13)

1. A heat pipe heat exchange device, comprising:

the cooling device comprises a first shell, a second shell and a cooling device, wherein a closed space is formed in the first shell, and a heating element and cooling liquid are arranged in the first shell;

the heat pipe heat exchanger is internally circulated with a circulating first refrigerant and comprises an evaporation section and a condensation section, the evaporation section is positioned in the first shell and is close to the heating element, and the condensation section is positioned outside the first shell;

wherein the cooling liquid submerges the heating element and the evaporation section.

2. A heat pipe heat exchange device as claimed in claim 1, wherein the evaporation section comprises an evaporation main pipe and a plurality of evaporation branch pipes, and the plurality of evaporation branch pipes are connected in parallel with the evaporation main pipe.

3. A heat pipe heat exchanging device as claimed in claim 2, wherein the evaporation branch pipes are disposed close to the heating element, and the number of the evaporation branch pipes is positively correlated with the amount of heat generated by the heating element.

4. A heat pipe heat exchange apparatus as claimed in claim 2, wherein each of said plurality of evaporator legs is a straight tube.

5. A heat pipe heat exchange device as recited in claim 4 wherein each of said plurality of evaporator legs extends in a first direction, and said first direction is parallel or perpendicular to a side wall of said first housing.

6. A heat pipe heat exchange device according to any one of claims 1 to 5, wherein the heat pipe heat exchanger is a wick type heat pipe heat exchanger, and comprises a capillary wick attached to an inner wall of the heat pipe heat exchanger.

7. A heat pipe heat exchange device according to any one of claims 1 to 5, wherein the heat pipe heat exchanger is a gravity type heat pipe heat exchanger, and the position of the condensation section is higher than that of the evaporation section.

8. A heat pipe heat exchange device according to any one of claims 1 to 5, wherein the heat pipe heat exchanger and the first housing are multiple, and evaporation sections of the multiple heat pipe heat exchangers are arranged in the multiple first housings in a one-to-one correspondence manner.

9. A heat exchange system, comprising the heat pipe heat exchange device of any one of claims 1 to 8.

10. The heat exchange system of claim 9, further comprising a circulation device for circulating a second refrigerant, wherein the circulation device comprises a second heat exchanger and a circulation pipeline communicated with the second heat exchanger, and the second refrigerant is used for exchanging heat with the condensation section.

11. The heat exchange system of claim 10, further comprising an electronic control valve, a temperature sensor and a controller, wherein the electronic control valve is disposed on the circulation pipeline, the temperature sensor is disposed in the first housing, and the controller is connected to the electronic control valve and the temperature sensor respectively.

12. The heat exchange system according to claim 10 or 11, further comprising a reheating utilization device, wherein the reheating utilization device comprises a third heat exchanger, and the third heat exchanger is arranged on the liquid return side of the circulation pipeline and is communicated with a water supply pipe and a water return pipe respectively.

13. A method of controlling the temperature regulation of the heat exchange system of claim 11, comprising the steps of:

when the temperature detected by the temperature sensor is smaller than a first preset value, the controller controls the electric control valve corresponding to the temperature sensor to reduce the valve opening;

when the temperature detected by the temperature sensor is greater than a second preset value, the controller controls the electric control valve corresponding to the temperature sensor to increase the valve opening;

when the temperature detected by the temperature sensor is greater than or equal to a first preset value and less than or equal to a second preset value, the controller controls the electric control valve corresponding to the temperature sensor to keep the opening of the valve unchanged;

wherein the first preset value is smaller than the second preset value.

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