JPH067026B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner used as an air conditioner.

(B) Conventional technology Conventional cooling and heating devices operate in a normal heat pump cycle in which the compressor is switched and connected to an indoor heat exchanger and an outdoor heat exchanger via a four-way switching valve. For example, Japanese Patent Application Laid-Open No. 56-960 proposes an engine using an energy efficient engine as the driving force.

(C) Problems to be Solved by the Invention An air conditioner that uses an engine as a power source has problems such as engine noise, vibration, and exhaust gas, and is not yet in practical use.

The present invention solves such a problem, and at the same time, provides an air conditioning system that fully exhibits air conditioning capacity while adopting an inexpensive refrigerator that does not require as precise processing as an engine and has a small number of parts. It is intended.

(D) Means for Solving the Problems The present invention provides a cylinder in which a working gas is filled, a high temperature side displacer and a low temperature side displacer that divide the inside of the cylinder into a high temperature chamber, a middle greenhouse and a low temperature chamber. , A high temperature side heat exchanger for heating the working gas, a high temperature side regenerator and a middle temperature side heat exchanger arranged in a gas flow path connecting the high temperature room and the middle greenhouse, and a gas flow path connecting the low temperature room and the middle greenhouse. In a device having a refrigerator composed of a low temperature side heat exchanger and a low temperature side regenerator arranged in, a medium temperature pipe line through which a medium heated by the medium temperature side heat exchanger flows, and a medium cooled by the low temperature side heat exchanger. A low temperature pipe through which the medium flows, an indoor heat exchanger installed indoors, a heat radiation outdoor heat exchanger and an heat absorption outdoor heat exchanger installed outdoors, and the low temperature heat exchange during cooling. To the indoor heat exchanger via the low temperature pipe, The intermediate temperature side heat exchanger is respectively communicated with the heat radiation outdoor side heat exchanger via the intermediate temperature pipe line, and, during heating, the intermediate temperature side heat exchanger is connected to the indoor side heat exchanger via the intermediate temperature line line, A flow path switching valve for communicating the low temperature side heat exchanger with the heat absorbing outdoor heat exchanger via the low temperature pipe.

(E) Action The refrigerator (15) of the device of the present invention uses a Brumeier cycle known in the technical field of low temperature engineering, and the high temperature side heat exchanger (6) is used to forcibly heat the working gas External By adopting the heating method, the low temperature medium from the low temperature side heat exchanger (12),
The medium temperature medium heat exchanger (8) is taken out of the medium temperature medium to cool the low temperature medium, the medium temperature medium is used for heating, and the outdoor heat exchanger (17) (17) This is done in 18) so that the cooling and heating capacity can be fully exerted. That is, the switching valves (19) (20) (21) (22), (23) during cooling
The closed cycle connecting the low temperature side heat exchanger (12) and the indoor side heat exchanger (16) at (24), (25), (26), (27) and (28) is the middle temperature side heat exchanger (8).
And a heat-radiating outdoor heat exchanger (17) are each formed to form a closed cycle, and the indoor-side heat exchanger (16) releases the heat of the low-temperature medium to the room for cooling and at the same time, the heat-radiating outdoor heat exchanger. (17) releases the heat of the medium temperature medium to the outside, and the switching valve (19) (20) (21) during heating
(22), (23) (24) (25) (26) (27) (28) by switching the closed cycle connecting the intermediate temperature side heat exchanger (8) and the indoor side heat exchanger (16),
Closed cycles connecting the low temperature side heat exchanger (12) and the heat absorbing outdoor heat exchanger (18) are formed respectively, and the indoor heat exchanger (16) releases the heat of the medium temperature medium to the room for heating. At the same time, the heat is absorbed from the outside air by the heat absorption outdoor heat exchanger (18).

(F) Embodiment An embodiment of the present invention will be described with reference to FIG.
Is a rotating rod (3 that rotates clockwise around the rotary shaft (30).
1) and the swing rod (33) (3) (3) pivotally supported by the tip (32) of this rotary rod.
4) and a crank portion, which is housed in the machine room (35) of the refrigerator (15).

The refrigerator (15) is pivotally supported by the swing rods (33) (34) and reciprocates with the phase shifted by about 70 °, and thus the high temperature side displacer (1).
And a low temperature side displacer (2), a high temperature side cylinder (5) partitioned by the high temperature side displacer (1) into a high temperature chamber (3) and a medium greenhouse (4), and this high temperature chamber (3) A high temperature side heat exchanger (6), a high temperature side regenerator (7) and a medium temperature side heat exchanger (8), and a low temperature side displacer (2), which are sequentially arranged in the gas flow path connecting the middle greenhouse (4). The low temperature side cylinder (11) divided into the low temperature room (9) and the middle greenhouse (10), and this low temperature room (9) and the middle greenhouse (10)
The low temperature side heat exchanger (1
2) and the low temperature side regenerator (13) and the auxiliary medium temperature side heat exchanger (36),
It is provided with a communication room (14) for communicating both middle greenhouses (4) (10).

The function of both displacers (1) and (2) is to fill the enclosed working gas (helium gas, nitrogen gas, etc.) between the high temperature chamber (3) and the medium greenhouse (4), and the low temperature chamber (9). The cylinders are mounted on both displacers (1) and (2) because they move between the greenhouse and the middle greenhouse (10) and do not compress or expand the working gas.
(5) Since it does not have a ring that seals with (11), it has the advantages that it does not require precise processing and that it has little vibration during operation.

(37) is a medium temperature side circulation pump installed at the medium (antifreeze liquid or CFC refrigerant) inlet side of the auxiliary medium temperature side heat exchanger (36), and (38) is a medium of the low temperature side heat exchanger (12) (antifreeze liquid or Freon). Refrigerant, etc.) A low-temperature side circulation pump installed on the outlet side.When cooling, the low-temperature side heat exchanger (12) exchanges heat with the indoor side heat exchanger (16) and the medium temperature side heat exchanger (8) exchanges heat with the outdoor side. Connected to the heat exchangers (17) respectively, the medium temperature heat exchanger (8) is used as the indoor heat exchanger (16) and the low temperature heat exchanger (12) is used as the heat absorbing outdoor heat exchanger (18) during heating. Three-way switching valves (19), (20), (21) and (22) that are connected to each other are provided in the pipeline.

Thus, the heat radiation outdoor side heat exchanger (17) has a heat exchange capacity which is about 1.8 times that of the heat absorbing outdoor side heat exchanger (18) calculated from the following conditions.

That is, the heat radiation amount Q _c is 5000Kcal / h, heat-absorbing chamber outer heat exchanger during the heating of the heat-radiating chamber outer heat exchanger during cooling (17) (1
The heat absorption amount Q _{N of} 8) is 2000 Kcal / h, and the temperature difference ΔT _c between the temperature 80 ° C of the medium temperature side heat exchanger (8) during cooling and the temperature 35 ° C of the heat radiation outdoor side heat exchanger (17) is 45 ℃, the temperature of the low temperature side heat exchanger (12) at the time of heating -10 ℃ and the heat absorbing outdoor heat exchanger (18)
Under the condition that the temperature difference ΔT _{N from} the temperature of 0 ℃ is 10 ℃,
Relational expression Q _c between the heat exchange capacity A _{c of} the exhaust heat outdoor side heat exchanger (17), the heat exchange capacity A _N of the heat absorption outdoor side heat exchanger (18), and a constant K =
A _c · K · ΔT _c , Q _N = A _N · K · ΔT _N to A _c = 5000 / K
・ 35, A _N = 2000 / K ・ If replaced with 10, A _N / A _c
≈1.8 is required.

As described above, the high temperature side heat exchanger (6) is heated to about 700 ° C. by the burner (39) and the rotating shaft (30) is driven by a small output motor (not shown). 1) is the low temperature side displacer which starts descending from the position shown and is at the top dead center position as shown.
(2) will start moving to the left. When the high temperature side displacer (1) reaches bottom dead center and starts to rise again, the working gas in the high temperature chamber (3) is pushed out by the high temperature side displacer (1), and at about 700 ° C with the burner (39). It is heated by and passes through the high temperature side regenerator (7). When the working gas, which has accumulated high heat in the high temperature side regenerator (7) and the temperature has dropped, passes through the medium temperature side heat exchanger (8), this heat exchanger and the auxiliary medium temperature side heat exchanger (36) connected to it At this time, the medium in the medium temperature pipe (40) is heat-exchanged to raise the temperature of this medium to about 80 ° C., and the working gas whose temperature has dropped is moved to the middle greenhouse (4).

During this time, the low-temperature side displacer (2) continues to move to the left, and the working gas extruded from the middle greenhouse (10) and the working gas that has moved to the middle greenhouse (4) are mixed and the auxiliary medium-temperature side heat exchange is performed. The gas (36), the low temperature side regenerator (13) and the low temperature side heat exchanger (12) flow into the low temperature side chamber (9). The pressure drops and the temperature drops. Then, when the low temperature side displacer (2) reaches the bottom dead center and starts moving to the right again, the low temperature working gas is pushed out from the low temperature side chamber (9) and the low temperature side heat exchanger (12).
When passing through, the medium in the low temperature pipe (41) is heat-exchanged to cool this medium to about −10 ° C., and cold heat is stored in the low temperature side regenerator (13) to store the auxiliary medium temperature side heat exchanger (36). Flow into.

The high temperature side regenerator (7) moves from the middle greenhouse (4) to the high temperature room (3), and the low temperature side regenerator (13) moves from the middle greenhouse (10) to the low temperature room (9) when working gas moves. The operating efficiency is improved by heating and cooling this gas.

Thus, in the high temperature side heat exchanger (6), the working gas is externally heated by the burner (39) so as to keep it at a high temperature, and
The medium temperature side heat exchanger (8) is cooled from the outside so that the temperature of the working gas is constant, and in such a state both displacer
(1) By using a refrigerator (15) with a so-called Bourmeier cycle in which a low temperature part is generated by moving (2), the heat absorption of this low temperature part is cooled by the low temperature side heat exchanger (12), and the medium temperature side heat The heat generated in the exchanger (8) is used for heating.

That is, during the cooling operation, the first to fourth three-way switching valves (19) (20) (2
1) By setting (22) to the solid line state, as shown by the solid line arrow,
The low temperature medium cooled by the low temperature side heat exchanger (12) is a low temperature side circulation pump (38) -first three-way switching valve (19) -indoor side heat exchanger (1
6) -Second three-way switching valve (20) -Forms a closed cycle that flows in an annular shape with the low temperature side heat exchanger (12) to cool the room inside the indoor side heat exchanger (16) and to supplement the auxiliary medium temperature. The high temperature medium heated from the side heat exchanger (36) through the intermediate temperature side heat exchanger (8) is the second three-way switching valve (21) -radiating outdoor heat exchanger (17) -fourth
3 way switching valve (22) -high temperature side circulation pump (37) -auxiliary medium temperature side heat exchanger (36) forms a closed cycle that flows in an annular shape and radiates heat to the outside with the heat dissipation outdoor heat exchanger (17) .

Also, during heating operation, the first to fourth three-way switching valves (19) (20) (21)
By switching (22) to the broken line state, the high temperature medium heated from the auxiliary intermediate temperature side heat exchanger (36) through the intermediate temperature side heat exchanger (8) is changed to the second three-way switching valve ( 21) -First three-way switching valve (19) -Indoor heat exchanger (16) -Fourth three-way switching valve (22) -High temperature side circulation pump (37) Forming a closed cycle that flows annularly with the room The inside heat exchanger (16) heats the room, and the low temperature medium cooled by the low temperature side heat exchanger (12) cools the low temperature circulation pump (38) -the heat absorbing outdoor heat exchanger (18) -second. A three-way switching valve (20) -a low temperature side heat exchanger (12) forms a closed cycle that flows in an annular shape, and heat is drawn from the outside air by the heat absorption outdoor heat exchanger (18).

In such an operation, the temperature of the medium temperature side heat exchanger (8) (about 8
0 ° C is the temperature of the heat radiation outdoor side heat exchanger (17) (about 35 ° C) during cooling and the temperature of the indoor heat exchanger (16) during heating (about 25 ° C).
℃), and the temperature of the low temperature side heat exchanger (12) (-1
0 ℃) is the temperature (10 ℃) of the indoor heat exchanger (16) during cooling
Since the temperature is lower than the temperature (0 ° C.) of the heat absorbing outdoor heat exchanger (18) at the time of heating, the circulation pumps (37) and (38) may be used to connect by a heat pipe.

When the heat is forcibly transferred by the circulation pumps (37) and (38), it is necessary to take care so that the medium is placed in the liquid state at the location shown in the above embodiment.

Further, the auxiliary medium temperature heat exchanger (36) may be omitted.

FIG. 2 shows another embodiment of the present invention. What is different from FIG. 1 is that the two-way switching valves (23) (24) are used instead of the three-way switching valves (19) (20) (21) (22). ) (25) (26) (27) (28) is used, and the medium flow during cooling is indicated by a solid arrow and the medium flow during heating is indicated by a broken arrow as in FIG. The description of the operation is omitted.

(G) Effect of the invention Since the present invention configures a cooling and heating device by connecting an inexpensive external combustion type refrigerator with less vibration and noise to the indoor heat exchanger and the outdoor heat exchanger via the switching valve, Compared with the conventional air conditioner that drives the compressor by the engine, it can cool and heat the room with quiet operation without air pollution, and it also has a large number of compressors, mufflers, expansion valves, gas-liquid separators, etc. necessary for the heat pump cycle. It can be finished with a simple circuit structure that does not require frozen parts.

Moreover, the outdoor heat exchanger is divided into two parts, one for heat dissipation during cooling and the other for heat absorption during heating, and the amount of heat dissipation and the amount of heat absorption match the low temperature medium temperature and medium temperature medium temperature that are cooled and heated by the refrigerator. Since the heat exchange capacity is set as described above, the cooling and heating capacity can be sufficiently exerted.

[Brief description of drawings]

FIG. 1 is a piping system diagram showing an embodiment of the present invention, and FIG. 2 is a piping system diagram showing another embodiment of the present invention. (1) ... High temperature side displacer, (2) ... Low temperature side displacer, (3) ... High temperature chamber, (4) (10) ... Mid greenhouse, (5) ... High temperature side cylinder, (6) ... High temperature side heat Exchanger, (7) ... High temperature side regenerator,
(8) ... Medium temperature side heat exchanger, (9) ... Low temperature chamber, (11) ... Low temperature side cylinder, (12) ... Low temperature side heat exchanger, (13) ... Low temperature side regenerator, (1
4) ... Communication room, (15) ... Refrigerator, (16) ... Indoor heat exchanger, (1
7)… Outside heat exchanger for heat dissipation, (18)… Outside heat exchanger for heat absorption, (19) (20) (21) (22), (23) (24) (25) (26) (27) ) (28)… Switching valve.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Katsuji Yoshikawa Inventor Katsuji Yoshikawa 180 Sakata, Oozumi-cho, Ora-gun, Gunma Tokyo Sanyo Electric Co., Ltd. (56) Reference JP-A-60-14064 (JP, A)

Claims (1)

[Claims] 1. A cylinder connecting a working gas, a high temperature side displacer and a low temperature side displacer that divide the inside of the cylinder into a high temperature chamber, a medium greenhouse and a low temperature chamber, and a gas connecting the high temperature chamber and the medium greenhouse. A high temperature side heat exchanger for heating the working gas, a high temperature side regenerator and a medium temperature side heat exchanger arranged in the flow path, and a low temperature side heat exchanger arranged in a gas flow path connecting the low temperature room and the middle greenhouse. In a device having a refrigerator composed of a low temperature side regenerator, a medium temperature pipe in which a medium heated in the medium temperature heat exchanger flows, and a low temperature pipe in which a medium cooled in the low temperature side heat exchanger flows, An indoor heat exchanger installed indoors, a heat-radiating outdoor heat exchanger and an endothermic outdoor heat exchanger arranged outdoors, and the low-temperature heat exchanger is connected to a room via a low-temperature pipe during cooling. The medium temperature side heat exchanger is connected to the inner heat exchanger with the medium temperature conduit. Through the heat radiation outdoor side heat exchanger, and during heating, the intermediate temperature side heat exchanger through the intermediate temperature pipe to the indoor side heat exchanger, the low temperature side heat exchanger through the low temperature pipe line. And a flow path switching valve for communicating with the outdoor heat exchanger for heat absorption.