JP2584013B2 - Heat transfer device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heat transfer device that performs heating and cooling using a refrigerant.

2. Description of the Related Art FIG. 5 shows a conventional heat transfer device. In the figure, 23 is a heat transfer device. 24 is a compressor, 25 is a first heat exchanger, 26
Is a second heat exchanger, 27 is a capillary tube, 28 is a four-way valve, and a refrigerant is sealed in the circuit.

When the four-way valve 28 is in the state shown in the figure, when the refrigerant starts to circulate in the direction of the arrow by the operation of the compressor 24, heat is released in the first heat exchanger 25 and heat is absorbed in the second heat exchanger 26, and Heat transfer is performed. Next, the four-way valve 28 is switched, and A and C,
When B and D are connected, the circulation path of the refrigerant reverses, heat is absorbed by the first heat exchanger 25 and heat is released by the second heat exchanger 26, and the heat transfer direction as a whole is reversed. .

Problems to be Solved by the Invention However, in this method, since a compressor is used as a means for heat transfer, noise and vibration are generated by the movable portion. Further, since a four-way valve having a movable portion is used for switching the heat transfer direction, a problem of durability arises.

Means for Solving the Problems In order to solve the above problems, the present invention uses an electromagnetic drive unit as a drive source of the refrigerant, and circulates the refrigerant in the drive unit. A refrigerant in which magnetic fine particles are dispersed in a colloidal state is sealed, and a polarity reversing switch for a magnetic field or a current applied to the electromagnetic driving unit is provided.

The refrigerant sealed by the above means receives a driving force according to the Fleming's left hand rule in the electromagnetic driving unit and is non-movably pressure-fed, thereby performing heat transfer. The direction of the heat transfer is switched by a switching operation of a polarity reversing switch of a magnetic field or a current applied to the electromagnetic force drive unit.

Embodiment In FIG. 1, reference numeral 1 denotes a heat transfer device. 2 is an electromagnetic drive unit, 3 and 4 are first and second heat exchangers, respectively, and 5 is a capillary tube, which form a closed circuit connected by a pipe 6. In conduit 6,
A refrigerant in which ferromagnetic fine particles are dispersed in a colloidal state so as to have conductivity is enclosed.

The electromagnetic force drive unit 2 is configured such that a magnetic field and a current are applied to the refrigerant in the pipeline 6 at right angles to each other in a plane perpendicular to the flow direction of the pipeline 2. Second
The figure shows an example, and FIG. 3 shows the circuit. The positive and negative sides of the DC power supply 9 are connected to the electrode plates 7 and 8, respectively. The resistance (10) is generated by the fluid between the electrode plates 7 and 8. Reference numeral 11 denotes a current application switch. Reference numerals 12 and 13 denote coils, and pole plates 14, 15 at their ends.
Are mounted to form the poles of the magnetic field generated by each coil. The winders 14 of the coils 12, 13 are wound in opposite directions. The pole plates 15 and 16 are configured such that their facing directions are perpendicular to the facing directions of the electrode plates 7 and 8. Coil 12, 13 is magnetic field, polarity reversal switch 1
It is connected to a DC power supply 9 via 7 and 18.

The switches 17 and 18 are configured to perform an interlocking operation. The terminal f corresponds to the terminal f, the terminal b corresponds to e, and the terminal c corresponds to d.

Reference numeral 19 denotes a heating means provided in the pipe 6 and has a capability of heating fine particles in the refrigerant to a temperature higher than the Curie point.

 Next, the operation will be described.

The heating means 19 is turned on, the switch 11 is turned on, and the coils 12, 13 are connected to the terminals a, f. In the electromagnetic force drive unit 2, since the refrigerant is conductive, a driving force acts on the colloidal fine particles in the refrigerant in accordance with Fleming's left-hand rule due to a current flowing in a direction perpendicular to the magnetic field, whereby the refrigerant moves in the direction of arrow A. Go to The flow of the refrigerant radiates and absorbs heat in the first heat exchanger 3 and the second heat exchanger 4 to form heat transfer. The fine particles are magnetized when passing through the electromagnetic force driving unit 2, and when passing through the electromagnetic force driving unit 2 again, the magnetization hinders the driving and propulsion. And the magnetization is released.

Next, the switches 17 and 18 are switched, and the connection state of the terminals b and f is changed to the connection state of the terminals c and d. At this time, since the directions of the currents flowing through the coils 12 and 13 are reversed, the polarities of the electrode plates 15 and 16 are reversed, and the refrigerant receives the driving force in the direction opposite to the previous direction, and thus flows in the direction opposite to the arrow A. The flow of the refrigerant flows through the first heat exchanger 3 and the second heat exchanger 4
, Heat is absorbed and radiated, and heat transfer in a direction opposite to that before switching the switches 17 and 18 is formed.

With such a configuration, it is possible to obtain an effect that the heat transfer direction can be switched with high reliability by using only the switches 17 and 18 without using a movable portion in the fluid circuit.

 Next, a second embodiment will be described with reference to FIG.

FIG. 4 is an alternative to the circuit diagram of FIG. FIG. 3 differs from FIG. 3 only in the configuration of the switches, and the components other than the switches are denoted by the same reference numerals as in FIG. Coil 12, 13
Is connected to the switch 20, and the resistor 10 is connected to the current polarity reversing switches 21, 22.
Reference numeral 22 denotes a structure in which an interlocking operation is performed. The terminal f 'corresponds to the terminal a', the terminal e 'corresponds to the terminal b', and the terminal f 'corresponds to the terminal c'.

 Next, the operation will be described.

The heating means 19 is turned on, the switch (20) is turned on, and the resistor 10 is connected to the terminals a 'and f'. At this time, the connection state of the electric circuit is the same as the initial setting of the first embodiment, so that the refrigerant flows in the direction of arrow A, and the first heat exchanger 3 and the second heat exchanger dissipate heat and heat. Endotherm takes place and heat transfer is formed.

Next, the switches 21 and 22 are switched, and the connection state between the terminals b 'and f' is transferred to the connection state between the terminals c 'and d'. At this time, the direction of the current flowing through the resistor 10 is reversed, and the refrigerant receives the driving force in the direction opposite to the previous direction. The flow of the refrigerant is generated by the first heat exchanger 3
And the second heat exchanger 4 absorbs and dissipates heat,
Heat transfer in the direction opposite to that before switching the switches 20, 21 is formed.

Effects of the Invention With such a configuration, it is possible to obtain an effect that the heat transfer direction can be switched with high reliability by using only the current polarity reversing switches 20 and 21 without using a movable portion in the fluid circuit.

The heating device is for eliminating the magnetized state of the refrigerant flowing into the electromagnetic drive unit, but may be omitted as long as the refrigerant does not cause magnetic hysteresis. The arrangement, if required, can be set anywhere in the flow path.

Further, in the first and second embodiments, the power source for generating the current and the magnetic field is shared, but different power sources may be used according to the respective required capacities. If a superconducting coil is used as a coil for generating a magnetic field, a more efficient state can be obtained.

Further, by controlling the value of the magnetic field or the current of the electromagnetic drive unit, the heat transfer capability can be controlled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram showing an embodiment of the heat transfer device of the present invention, FIG. 2 is a partial perspective view of an electromagnetic force drive unit of the device, and FIG. FIG. 4 is a circuit diagram for operating the unit, FIG. 4 is a circuit diagram in the second embodiment, and FIG. 5 is a system diagram of a conventional heat transfer device. 1. Heat transfer device 2. Electromagnetic force drive unit 3.
1st heat exchanger, 4 ... second heat exchanger, 5 ... capillary tube, 17,18 ... magnetic field polarity reversing switch, 20,
22 ... Current polarity reversing switch.

Claims (1)

(57) [Claims] An electromagnetic drive unit, a first heat exchanger, a capillary tube and a second heat exchanger are sequentially connected to form a fluid closed circuit, wherein the electromagnetic drive unit is disposed on a plane orthogonal to a flow. A magnetic field and a current are formed so as to be applied orthogonally to each other, and a polarity reversing switch for the magnetic field or the current is provided.Ferromagnetic fine particles having conductivity are colloidally contained in the fluid closed circuit. A heat transfer device in which a refrigerant dispersed in a shape is enclosed.