Rotary heat exchange system

Abstract

The utility model relates to a rotary heat exchange system which comprises a stator, a rotor, a central rotating shaft, a shaft end seal and a shell, the stator is installed on the shell, the rotor is installed on the central rotating shaft, the central rotating shaft and the shell form a sealing structure through the shaft end seal, and the stator is composed of a plurality of supporting plates fixed to the shell and heat exchange pipes wound around the supporting plates. The rotor is composed of a plurality of supporting plates fixed to the center rotating shaft and heat exchange pipes wound around the supporting plates, and the heat exchange pipes on the stator and the heat exchange pipes on the rotor are communicated through a channel in the center rotating shaft, a channel in the shaft end seal and a channel in the shell to form a heat exchange medium circulation channel. Energy consumption can be reduced, use of a compressor and a fan is avoided, and the use cost is reduced.

Description

Technical Field

[0001] The present application relates to a rotary heat exchange system, which is applicable to the technical field of heat exchange devices. Background Art

[0002] Based on the reverse Carnot cycle principle, in the prior art, a heat exchange medium circulation system is formed by four core components, namely, a compressor, a condenser, a throttle valve and an evaporator. The heat emitted by the circulation system is obtained at the condenser end, and the cold emitted by the circulation system is obtained at the evaporator end. At the same time, according to the principle of energy conservation, the sum of the power consumption of the compressor and the cold emitted by the evaporator end is equal to the heat emitted by the condenser end. In order to improve the heat exchange efficiency of the circulation system, fans can be respectively arranged at the condenser end and the evaporator end to drive the airflow, and forced convection heat exchange occurs with the condenser and the evaporator. Since the heat exchange efficiency of forced convection is higher than that of natural convection, when the fan is involved, the circulation system composed of the above four core components can achieve an improvement in heat exchange efficiency. The compressor, condenser, throttle valve, evaporator and fan motor operate independently. The compressor has a motor, which operates under the action of electric energy to drive the piston movement in the cylinder, so that the heat exchange medium is energized, runs in the condenser, throttle valve and evaporator, and then flows back to the cylinder, and repeats over and over again. The fan motor also generates a switching magnetic field between the rotor and stator inside the motor under the action of electrical energy, driving the rotor to rotate, further driving the fan to rotate and generate airflow.

[0003] Therefore, the heat exchange system in the prior art generally uses a compressor and a motor, which not only consumes energy, but also makes the size and floor space of the heat exchange system larger, resulting in an increase in the cost of use. Utility Model Content

[0004] The purpose of the present application is to design a rotary heat exchange system which can reduce energy consumption, avoid the use of compressors and fans, and thus reduce the cost of use.

[0005] The present application relates to a rotary heat exchange system, comprising a stator, a rotor, a central rotating shaft, an axial end seal and a shell, wherein the stator is mounted on the shell, the rotor is mounted on the central rotating shaft, the central rotating shaft forms a sealing structure with the shell through the axial end seal, the stator is composed of a plurality of support plates fixed on the shell and heat exchange tubes wound on the support plates, the rotor is composed of a plurality of support plates fixed on the central rotating shaft and heat exchange tubes wound on the support plates, the heat exchange tubes on the stator and the heat exchange tubes on the rotor are interconnected through a channel inside the central rotating shaft, a channel inside the axial end seal and a channel inside the shell to form a circulation passage for the heat exchange medium.

[0006] Wherein, the support plates of the stator and the support plates of the rotor can be distributed in fan-shaped blocks with the central rotating shaft as the center; the heat exchange tubes on different support plates of the stator can be connected in series or in parallel, and / or, the heat exchange tubes on different support plates of the rotor can be connected in series or in parallel; the heat exchange tubes of the stator and the heat exchange tubes of the rotor can both be conductors, and the surfaces are provided with insulating coatings; the interior of the central rotating shaft can be divided into a plurality of internal channels, and the internal channels can be connected to the inlet and outlet of the heat exchange tubes of the rotor and the channels inside the shaft end seal; the internal The channel may include a first internal channel and a second internal channel, and two shaft end seals are provided, which are respectively located at the two ends of the central rotating shaft, wherein the channel inside the shaft end seal at one end is connected to one end of the heat exchange tube of the stator to the first internal channel, and the channel inside the shaft end seal at the other end is connected to the other end of the heat exchange tube of the stator to the second internal channel; a throttling bayonet may be provided on the channel in the shell, a partition may be provided between the stator and the rotor, and the support plates may be formed of silicon steel sheets; a fan may be arranged outside the central rotating shaft, and the fan may be connected to the central rotating shaft.

[0007] The rotary heat exchange system of the present application, by winding heat exchange tubes on the rotor and stator respectively, generates pressure on the heat exchange medium through the rotation of the rotor to achieve forced flow of the heat exchange medium, and can also produce a forced convection heat exchange effect through rotation, which can avoid the use of compressors and reduce or avoid the use of fans. In addition, current can be passed through the heat exchange tubes, and the interaction of shear forces between the stator and the rotor can be used to generate power to drive the central shaft to rotate, thereby avoiding the need for a separate motor for driving the central shaft to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a cross-sectional view of the rotary heat exchange system of the present application.

[0009] Figure 2 It is another cross-sectional view of the rotary heat exchange system of the present application.

[0010] Figure 3 It is a partial structural schematic diagram of the stator in this application.

[0011] Figure 4 It is a partial structural schematic diagram of the rotor in this application.

[0012] Figure 5 It is a partial detailed view of the rotor in this application.

[0013] Figure 6 It is a schematic diagram of the flow path of the heat exchange medium in this application.

[0014] Figure 7It is a schematic diagram of another embodiment of the rotary heat exchange system. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0016] like Figure 1-6 As shown, a rotary heat exchange system according to the present application includes a stator 1, a rotor 2, a central rotating shaft 3, an axial end seal 4 and a housing 5, wherein the stator 1 is mounted on the housing 5, the rotor 2 is mounted on the central rotating shaft 3, and the central rotating shaft 3 forms a dynamic and static sealing structure with the housing 5 through the axial end seal 4. The stator 1 is composed of a plurality of support plates 12 distributed in a fan-shaped block with the central rotating shaft 3 as the center and a heat exchange tube 11 wound on the support plate 12. The heat exchange tube 11 can be made of a metal material, and a channel for the heat exchange medium to flow through is provided inside, and the heat exchange tube 11 is wound on the support plate 12. In order to facilitate winding and generate an electromagnetic field, the flow equivalent diameter of the heat exchange tube 11 can be less than 4 mm, and the surface is coated with an insulating coating. After the heat exchange tube 11 is wound on the support plate 12, the heat exchange tubes 11 corresponding to the number of support plates 12 can be connected in series or in parallel. The support plate 12 is made of a material that reduces hysteresis loss and eddy current loss, and its material can be selected from silicon steel sheets, and forms a fan-shaped block.

[0017] The stator 1 is fixed on the shell 5. The shell 5 is provided with a channel 51 through which the heat exchange medium flows. The channel 51 is provided with more than two ports 52 at the connection with the shell. The channel 51 on the shell 5 is further connected with the heat exchange tube 11, so that the heat exchange medium can flow in from an inlet port 52 on the shell 5, flow into the heat exchange tube 11 along the channel 51, and further flow out from another port 52 on the shell 5. The setting of the port 52 on the shell is related to the number of ports required for the heat exchange medium to enter and exit formed by the series or parallel connection of the heat exchange tubes 11 and their combination.

[0018] The rotor 2 is composed of a plurality of support plates 22 distributed in a sector-shaped block with the central rotating shaft 3 as the center and a heat exchange tube 21 wound on the support plate 22. The heat exchange tube 21 is also made of a metal material, with a channel for the heat exchange medium to flow through in the middle, and is wound on the support plate 22. In order to facilitate winding and generate an electromagnetic field, the flow equivalent diameter of the heat exchange tube 21 can also be less than 4 mm, and the surface is coated with an insulating coating. After the heat exchange tube 21 is wound on the support plate 22, the heat exchange tube 21 corresponding to the number of support plates 22 can be connected in series or in parallel. The support plate 22 is made of a material that reduces hysteresis loss and eddy current loss, and its material can be selected from silicon steel sheets, and forms a sector-shaped block. The heat exchange tube 11 on the stator 1 and the heat exchange tube 21 on the rotor 2 are connected to each other through the channel inside the central rotating shaft 3, the channel inside the shaft end seal 4 and the channel 51 on the shell 5 to form a circulation passage for the heat exchange medium.

[0019] The rotor 2 is fixed on the central rotating shaft 3. The central rotating shaft 3 is divided to form a plurality of channels 31. The channels 31 are provided with more than two ports 32 at the connection of the central rotating shaft 3. The channels 31 on the central rotating shaft 3 are sealed and connected with the heat exchange tubes 11. The heat exchange medium can flow in from one port 32 on the central rotating shaft 3, flow into the heat exchange tubes 21 along the channels 31, and then flow out from another port 32 on the central rotating shaft 3. The setting of the ports 32 on the central rotating shaft 3 is related to the number of ports required for the heat exchange medium to enter and exit formed by the series or parallel connection of the heat exchange tubes 21 and their combination.

[0020] The end of the central rotating shaft 3 is provided with a shaft end seal 4. The heat exchange medium in the central rotating shaft 3 flows through the channel 31 and communicates with the channel in the shaft end seal 4 through the port 33. The channel in the shaft end seal 4 is then connected to the shell 5 and communicates with the channel 51 in the shell 5. The shaft end seal 4 is a sealing structure formed by a static seal and a dynamic seal. The main function is to ensure that when the central rotating shaft 3 rotates, the heat exchange medium can flow into the shaft end seal 4 through the port 32 and then further flow into the channel 51 of the shell 5, so that the heat exchange tube 11 of the stator 1 and the heat exchange tube 21 on the rotor 2 can be connected to form a closed pipeline system.

[0021] like Figure 6As shown, the heat exchange medium flows from the port 33a of the central rotating shaft 3 into the channel 31a in the central rotating shaft, and flows into the heat exchange tube 21 through the connecting port 32a between the heat exchange tube 21 and the channel 31a. The heat exchange medium further flows along the heat exchange tube 21 wound on the support plate 22, and flows into another channel 31b of the central rotating shaft 3 through the connecting port 32b between the heat exchange tube 21 and the central rotating shaft 3, and flows into the shaft end seal 4 from the port 33b on this channel. The heat exchange medium flows through the channel 51a connected to the shell through the shaft end seal 4 and through the port 52a into the heat exchange tube 11 wound on the stator 1. The heat exchange medium flows along the heat exchange tube 11 and passes through the port 52b, flows into the channel 51b on the shell 5, and flows into the shaft end seal 4 through the connection between the channel 51b and the shaft end seal 4, so that the heat exchange medium circulates to the shaft end seal and the port 33a on the central rotating shaft 3.

[0022] The heat exchange tube 11 on the stator 1 is wound on the support plate 12 to form a stator coil. When current is passed through the heat exchange tube 11, a magnetic field is generated. At the same time, the heat exchange tube 21 on the rotor 2 is wound on the support plate 22 to form a rotor coil. When current is passed through the heat exchange tube 21, a magnetic field is generated. When current is passed through both the heat exchange tube 11 and the heat exchange tube 12, a magnetic field shear force is generated. Under this force, the rotor will rotate with the center line of the central shaft 3 as the axis. The rotation speed thus formed is related to the current frequency and the number of poles formed by the heat exchange tube 11 and the heat exchange tube 21. Therefore, in the present application, a motor for driving the central shaft to rotate may no longer be separately provided, and the magnetic field shear force formed by the current in the heat exchange tube can play the role of a motor.

[0023] Assume that there is a heat exchange medium with a density of ρ flowing through a heat exchange tube with a flow cross-sectional area of ​​s. There is a small unit of heat exchange medium at a distance R from the rotation center. Its length in the R direction is ΔR. Then the mass of the small unit of heat exchange medium is ρ*s*ΔR. Assuming that the heat exchange tube rotates at an angular velocity ω, the pressure ΔP formed by the small unit is:

[0024] ΔP=ρ*s*ΔR*ω 2 *R / s=ρ*ΔR*ω 2 *R

[0025] In this way, we can get the pressure P at the distance R from the rotation center, because the heat exchange tube rotates at a speed of ω:

[0026] P=ρ*ω 2 *R 2 / 2

[0027] From the above formula, it can be seen that the pressure generated is proportional to the square of the rotation speed and the square of the rotation radius of the heat exchange tube from the central axis. The higher the rotation speed, the greater the pressure; the larger the rotation radius, the greater the pressure. For example, when the speed is 3600r / min, i.e. 60r / s, if R is 0.25 meters, the density ρ of the heat exchange medium is 1.2*10 3 kg / m 3 , then the pressure P formed is 0.135Mpa.

[0028] According to the above technical structure, after the current is passed through the heat exchange tubes 11 and 12, the rotor 2 will rotate, thereby disturbing the flow of gas or liquid around the rotor 2. Furthermore, a throttling bayonet 6 can be provided on the channel 51 in the shell 5 to throttle the heat exchange medium with a certain pressure formed in the heat exchange tube 21, and realize heat exchange in the heat exchange tube 11 of the stator 1. In order to prevent the stator 1 and the rotor 2 from forming a cold bridge, a partition 7 can be provided between the stator 1 and the rotor 2 to isolate the cold bridge. The partition 7 can be made of organic material, and in addition to isolating the cold bridge to prevent heat transfer, it will not affect the shear magnetic field formed between the stator 1 and the rotor 2.

[0029] like Figure 7 As shown, when it is necessary to enhance the heat exchange efficiency of the stator heat exchange tube, a fan 8 can be arranged on the central shaft as needed, so that the central shaft can drive the fan to rotate together while rotating, forming a disturbed airflow to enhance the heat exchange of the stator heat exchange tube to increase the heat exchange amount. It should be understood that the fan of the present application is a selective setting based on actual needs, and is not a must.

[0030] Although the implementation methods disclosed in this application are as above, the contents described are only implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A rotary heat exchange system, comprising a stator, a rotor, a central rotating shaft, a shaft end seal and a housing, wherein the stator is mounted on the housing, the rotor is mounted on the central rotating shaft, and the central rotating shaft forms a sealing structure with the housing through the shaft end seal, characterized in that: The stator is composed of a plurality of support plates fixed on the shell and heat exchange tubes wound on the support plates, and the rotor is composed of a plurality of support plates fixed on the central rotating shaft and heat exchange tubes wound on the support plates. The heat exchange tubes on the stator and the heat exchange tubes on the rotor are interconnected through the channels inside the central rotating shaft, the channels inside the shaft end seal and the channels inside the shell to form a circulation passage for the heat exchange medium.

2. The rotary heat exchange system according to claim 1, characterized in that: The support plates of the stator and the support plates of the rotor are distributed in fan-shaped blocks with the central rotation axis as the center.

3. The rotary heat exchange system according to claim 1, characterized in that: The heat exchange tubes on different support plates of the stator are connected in series or in parallel, and / or the heat exchange tubes on different support plates of the rotor are connected in series or in parallel.

4. The rotary heat exchange system according to claim 1, characterized in that: The heat exchange tubes of the stator and the heat exchange tubes of the rotor are both conductors, and the surfaces are provided with insulating coatings.

5. The rotary heat exchange system according to any one of claims 1 to 4, characterized in that: The interior of the central shaft is divided into a plurality of internal channels, and the internal channels are communicated with the inlet and outlet of the heat exchange tube of the rotor and the channels inside the shaft end seal.

6. The rotary heat exchange system according to claim 5, characterized in that: The internal channel includes a first internal channel and a second internal channel. Two shaft end seals are provided, which are respectively located at the two ends of the central rotating shaft, wherein the channel inside the shaft end seal at one end is connected to one end of the heat exchange tube of the stator to the first internal channel, and the channel inside the shaft end seal at the other end is connected to the other end of the heat exchange tube of the stator to the second internal channel.

7. The rotary heat exchange system according to any one of claims 1 to 4 and 6, characterized in that: A throttling bayonet is arranged on the channel in the shell.

8. The rotary heat exchange system according to any one of claims 1 to 4 and 6, characterized in that: A partition is provided between the stator and the rotor.

9. The rotary heat exchange system according to any one of claims 1 to 4 and 6, characterized in that: The support plates are all formed of silicon steel sheets.

10. The rotary heat exchange system according to any one of claims 1 to 4 and 6, characterized in that: A fan is arranged outside the central rotating shaft, and the fan is connected to the central rotating shaft.

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