JPH05296590A - Heat pump - Google Patents

Abstract

PURPOSE:To obtain a Vuilleumier type heat pump capable of embodying an equivalent cooling and heating capacity with a small size and low cost structure. CONSTITUTION:A second heat accumulator 30 is installed inside a low temperature side displacer 11 while a middle temperature side and a low temperature side gas flow passages 31 and 32 are installed so as to connect second middle side and low temperature side heat exchangers 13 and 14 to this second heat accumulator 30. This construction makes it possible to embody the entire system with small size and low cost as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved heat pump device.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram showing a conventional Vilmier type heat pump device disclosed in, for example, Japanese Patent Application Laid-Open No. 61-44254. In FIG. 7, reference numeral 1 is a high temperature side cylinder. Reciprocating high temperature side displacer 2
A high temperature chamber 3 and a first middle greenhouse 4 which are separated from each other are provided. 5 is a high temperature side heat exchanger communicating with the high temperature chamber 3, 6
Is a heater, 7 and 8 are a first heat storage device and a first medium temperature heat exchanger, which are sequentially arranged in the middle of a passage connecting the high temperature side heat exchanger 5 and the middle greenhouse 4, and 10 is a low temperature side cylinder. This is divided into a middle greenhouse 9 and a low temperature chamber 12 by a low temperature side displacer 11 which reciprocates inside. Reference numeral 13 is a second medium temperature side heat exchanger, 14 is a low temperature side heat exchanger, and 15 is a second heat accumulator, which are sequentially arranged in a passage connecting the middle greenhouse 9 and the low temperature chamber 12. 16 is an indoor heat exchanger, 17 is a blower, 18 is an outdoor heat exchanger, 19 is a blower, 20, 2
1 is a switching valve provided in the middle of the flow path through which the heat transport medium flows,
22 and 23 are pumps, one for each. Further, 24 is a motor shaft, 25 is a crank, 26 and 27 are swinging rods, and the tip ends of the swinging rods are pivotally supported by the ends of the respective displacers 2.

Next, the operation will be described. Due to the movement of the high temperature side displacer 2 in the high temperature side cylinder 1, the gas passing through the high temperature side heat exchanger 5 is heated by a heater 6 provided outside.
While being heated by the heat storage device 7 or the high temperature chamber 3
Flows into the air, causing a pressure change in the gas. In this case, the pressure of the gas that changes from moment to moment is high temperature chamber 3, middle greenhouses 4, 9
The same in the low temperature chamber 12, and the movement of the low temperature side displacer 11 reciprocating out of phase by the oscillating rods 26 and 27 connected to the motor shaft causes the average temperature of the gas in the middle greenhouses 4 and 9 to be indoor. The low temperature room 12
The average temperature of the gas is about the indoor cooling temperature. Normally, the heat transport medium is heated in the middle temperature side heat exchangers 8 and 13, and is cooled in the low temperature side heat exchanger 14. The heated heat transport medium is pumped by the pumps 22 and 23, in the case of heating,
It is sent to the indoor heat exchanger 16 via the switching valve 20 and is exchanged with the indoor air by the blower 17. On the other hand, in the case of cooling, the outdoor heat exchanger 18 is passed through the switching valve 20.
And is radiated to the atmosphere by the blower 19. Further, the heat transport medium cooled by the low temperature side heat exchanger 14 is sent to the indoor side heat exchanger 16 in the case of cooling, and is sent to the outdoor side heat exchanger 18 in the case of heating, respectively. Heat is exchanged with the indoor and outdoor air.

[0004]

In the conventional heat pump device as described above, the displacers 2, 11, the heat exchangers 5, 8, 13, 14, 16, 18 and the heat accumulators 7, 15 are the points. The entire structure is large due to the existing structure,
There is a problem that the breakdown voltage structure becomes difficult and the cost becomes high.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a heat pump device which has a compact structure by integrating the respective parts, has a simple pressure resistant structure, and is low in cost. It is a thing.

[0006]

In the heat pump device according to the present invention, a high temperature side displacer and a low temperature side displacer which reciprocate with their phases shifted from each other, and the high temperature side displacer separate the high temperature chamber and the first middle greenhouse. A high temperature side cylinder, a low temperature side cylinder divided into a low temperature chamber and a second middle greenhouse by the low temperature side displacer, a high temperature side heat exchanger communicating with the high temperature chamber and being heated from the outside, A first heat accumulator and a first middle temperature side heat exchanger arranged between the high temperature side heat exchanger and the first middle greenhouse
A low temperature side heat exchanger, a second heat storage device and a second middle temperature side heat exchanger, which are arranged between the low temperature chamber and the second middle greenhouse.
A communication chamber that communicates the first and second intermediate greenhouses, and a heat transport medium that circulates through the first and second medium-temperature side heat exchangers and the low-temperature side heat exchanger, respectively. In a heat pump device comprising a switching valve for switching and supplying to an outer heat exchanger and a pump for pumping the heat transport medium, the heat accumulator is arranged in a displacer, and the heat accumulator is connected to the heat exchanger. The gas flow path is provided.

Further, a heat transfer medium passage port is provided on the outer periphery of the heat accumulator, and a woven wire mesh wound in a spiral shape is provided inside.

[0008]

According to the present invention, the high temperature side displacer and the low temperature side displacer which reciprocate with the phases shifted from each other, the high temperature side cylinder in which the high temperature side displacer separates the high temperature chamber from the first middle greenhouse, and the low temperature side displacer A low temperature side cylinder that is divided into a low temperature chamber and a second middle greenhouse by a side displacer, a high temperature side heat exchanger that communicates with the high temperature chamber and is heated from the outside, the high temperature side heat exchanger, and the first A first heat storage device and a first middle temperature side heat exchanger arranged between the low temperature chamber and a second middle temperature chamber, A second heat storage device and a second middle temperature side heat exchanger, a communication chamber for communicating the first and second middle greenhouses, and first and second middle temperature side heat exchangers and a low temperature side heat exchanger. The heat transport medium that circulates to the indoor heat exchanger and the outdoor In a heat pump device comprising a switching valve for switching and supplying to a heat exchanger and a pump for pumping the heat transport medium, the heat storage device is arranged in a displacer, and the heat storage device is connected to the heat exchanger. Since the gas passage is provided, the heat transport medium flows between the heat accumulator and the heat exchanger in the displacer through the gas passage.

Further, since the heat transport medium passage opening is provided on the outer periphery of the heat storage unit and the spirally wound woven wire mesh is provided inside, the heat transport medium flows in the heat storage unit in the radial direction. , Orthogonal to the woven wire mesh.

[0010]

【Example】

Example 1. 1 and 2 are views showing a first embodiment of the present invention. In the drawings, 1 to 27 show the same or corresponding parts as in the above-mentioned conventional example, and 30 is a second heat storage device, which is disposed in the low temperature side displacer 11. A medium temperature side gas flow path 31 connected to the second intermediate temperature side heat exchanger 13 is provided on one side, and a low temperature side gas flow path 32 connected to the low temperature side heat exchanger 14 is provided on the other side. Further, although not shown, when the low temperature displacer 11 is raised, the working gas which is the heat transport medium of the low temperature chamber 12 causes the second medium temperature side heat exchanger 13, the low temperature side heat exchanger 14 and the second heat accumulator 30 to operate. In order to pass through and enter the second middle greenhouse 9, a seal portion for sealing between the low temperature side displacer 11 and the low temperature side cylinder 10 is provided,
The low greenhouse 12 does not flow directly into the second middle greenhouse 9. Further, between the low temperature chamber 12 and the low temperature side gas flow path 32 and between the second middle greenhouse 9 and the middle temperature side gas flow path 31.
And a seal portion (not shown) are provided so that the working gas does not flow due to a short circuit.

In the air pump device of the first embodiment constructed as described above, the low temperature side displacer 11 is located at the lowest position of the low temperature side cylinder 10, as shown in FIG. Reciprocates up and down. Along with this, the working gas in the low temperature chamber 12 moves from the low temperature chamber 12 to the low temperature side heat exchanger 14 → the low temperature side gas flow path 32 → the second heat storage device 30 → the intermediate temperature side gas flow path 31 →
It flows into the second middle temperature side heat exchanger 13 and then flows into the second middle greenhouse 9. In this way, in the conventional technique, the second
The heat accumulator 15 was disposed outside the low temperature side displacer 11. However, by installing the second heat accumulator 30 inside the low temperature side displacer 11, the low temperature side cylinder 10 can be made small and performance is maintained. The entire structure can be downsized and the cost can be reduced.

Example 2. Although the displacer 11 is internally provided on the low temperature side cylinder 10 side in the first embodiment, the high temperature side displacer 2 may be internally provided on the high temperature side cylinder 1, and the same effect as that of the first embodiment is obtained. ..

Embodiment 3. FIG. 3 is a diagram showing a third embodiment of the present invention, in which the low temperature side gas passage 32 is connected to the low temperature side cylinder 10.
Provided on the outer peripheral portion of the first embodiment and the second embodiment.
The same effect as can be obtained.

Example 4. 4 to 6 are views showing Embodiment 4 of the present invention, in which a passage port 40 for the heat transport medium is provided on the outer periphery of the second heat storage device 30, and the second heat storage device 30 is provided with the passage port 40.
Further, as shown in FIG. 6, a woven wire net 41 made of, for example, stainless steel is spirally wound and arranged.

In the heat pump apparatus according to the fourth embodiment having the above-described structure, the working gas flows in the second heat storage device 30 in the radial direction, and at this time, the working gas crosses the inside of the woven wire net 41 at right angles.
Generally, the heat storage device stores the heat therein to maintain the temperature difference between the high temperature chamber and the medium greenhouse, and the medium temperature chamber and the low temperature chamber. Therefore, the heat storage device needs to have a large specific heat, but the working gas flows. If the heat conduction in the direction is good, the temperature difference cannot be maintained, so it is necessary to make the heat conduction worse in the direction in which the working gas flows. By laminating the woven wire net 41 and making the working gas orthogonal to each other, heat conduction can be deteriorated. Further, as shown in FIG. 6, the woven wire net 41 has a better yield than the rectangular shape, and the cost can be reduced.

[0016]

As described above, according to the present invention, the high temperature side displacer and the low temperature side displacer which reciprocate with the phases shifted from each other, and the high temperature side in which the high temperature side and the first middle greenhouse are separated by the high temperature side displacer A cylinder, a low temperature side cylinder divided by the low temperature side displacer into a low temperature chamber and a second middle greenhouse, a high temperature side heat exchanger communicating with the high temperature chamber and heated from the outside, and the high temperature side heat exchange. First heat storage device and first heat exchanger on the intermediate temperature side arranged between the container and the first middle greenhouse, and a low temperature arranged between the low temperature chamber and the second middle greenhouse. The side heat exchanger, the second heat accumulator and the second intermediate temperature side heat exchanger, and the first and second
The communication chamber for communicating the middle greenhouse and the heat transport medium circulating in the first and second middle temperature side heat exchangers and the low temperature side heat exchanger are switched to the indoor side heat exchanger and the outdoor side heat exchanger, respectively. In a heat pump device including a switching valve for supplying and a pump for feeding the heat transport medium under pressure, the heat storage device is arranged in a displacer, and a gas flow path connected to the heat exchanger is provided in the heat storage device. As a result, the size of the cylinder can be reduced, the pressure resistant structure can be facilitated, and the cost can be reduced.

Further, since a passage for the heat transport medium is provided on the outer periphery of the heat accumulator and a woven wire mesh which is spirally wound is provided inside, the yield of the woven wire mesh is good, and the cost is further reduced. Can be achieved.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a partial view of the low temperature side cylinder showing the first embodiment of the present invention.

FIG. 3 is a partial view of a low temperature side cylinder showing a third embodiment of the present invention.

FIG. 4 is a partial view of a low temperature side cylinder showing a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a woven wire mesh showing Embodiment 4 of the present invention.

FIG. 6 is a partial front view of a woven wire mesh showing Embodiment 4 of the present invention.

FIG. 7 is a cross-sectional configuration diagram showing a conventional heat pump device.

[Explanation of symbols]

 1 High Temperature Side Cylinder 2 High Temperature Side Displacer 3 High Greenhouse 4 First Middle Greenhouse 5 High Temperature Side Heat Exchanger 7 First Heat Storage 8 First Middle Temperature Side Heat Exchanger 9 Second Middle Greenhouse 10 Low Temperature Side Cylinder 11 Low Temperature Side displacer 12 Low greenhouse 13 Second medium temperature side heat exchanger 14 Low temperature side heat exchanger 15 Second heat storage unit 16 Indoor side heat exchanger 18 Outdoor heat exchanger 20 Switching valve 21 Switching valve 22 Pump 23 Pump 30th 2 heat storage device 31 medium temperature side gas flow path 32 low temperature side gas flow path 40 passage port 41 woven wire mesh

Claims (2)

[Claims] 1. A high-temperature-side displacer and a low-temperature-side displacer that reciprocate out of phase with each other; A low temperature side cylinder divided into a low greenhouse and a second middle greenhouse,
A high temperature side heat exchanger that communicates with the high temperature chamber and is heated from the outside, a first heat storage device and a first middle temperature disposed between the high temperature side heat exchanger and the first middle greenhouse A side heat exchanger, a low temperature side heat exchanger arranged between the low temperature chamber and the second middle greenhouse, a second heat storage device and a second middle temperature side heat exchanger, and the first and the second. The communication chamber for communicating the middle greenhouse 2 and the heat transport medium circulated through the first and second middle temperature side heat exchangers and the low temperature side heat exchanger to the indoor side heat exchanger and the outdoor side heat exchanger, respectively. In a heat pump device including a switching valve for switching and supplying and a pump for pressure-feeding the heat transport medium, the heat storage device is arranged in a displacer, and a gas flow path connected to the heat exchanger is provided in the heat storage device. A heat pump device characterized by being provided. 2. The heat pump according to claim 1, wherein a passage for the heat transport medium is provided on the outer periphery of the heat accumulator, and a woven wire mesh wound in a spiral shape is provided inside. apparatus.