JPS61252467A - Refrigerator with hot-water supply machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a refrigerator with a water heater, and in particular, a hot water tank is built into a machine room containing a refrigerator, making use of space that was conventionally a dead space.

Furthermore, the present invention relates to a novel improvement for supplying hot water using waste heat from a refrigerator.

b. Conventional technology A variety of configurations have been adopted and proposed for commercial refrigerators and freezers used in restaurants, hotels, etc., which have been used in the past. To describe it, it is as shown in FIGS. 3 and 4.

That is, a machine room 2 is provided in the upper part of the main body 1, and a refrigerating room 3 provided with a plurality of doors 3a is provided in the lower part of the machine room 2.

As shown in FIG. 4, the machine room 2 has a substantially rectangular box shape as a whole, and a refrigerator 7 consisting of a compressor 4, a condenser 5, an electrical component 6, etc. is installed at one end of the machine room 2. They are formed in a block shape, and a dead space 8 consisting of a space is formed at the other end.

C6 Problems to be Solved by the Present Invention However, in the conventional configuration described above, the dead space 8 was not utilized at all, and the machine room was not utilized effectively. Moreover, at the same time, the waste heat emitted from the refrigerator is not utilized at all, and acts as a cooling load, especially in the summer.

d. Means for Solving the Problems The present invention aims to provide extremely effective means for quickly eliminating one or more problems, and this invention aims to provide a highly effective means for quickly eliminating one or more problems. The gist of the invention is a refrigerator comprising a compressor, a discharge pipe, a condenser, a cooling section, etc., a machine room for accommodating the refrigerator, and a refrigerating room connected to the machine room. and a hot water supply tank provided in the machine room, further comprising a heat transfer body provided in the discharge pipe of the refrigerator, one end of which is connected to the hot water supply tank. installed inside the tank.

This is a refrigerator with a water heater in which the heat transfer body is a thermosiphon or a heat pipe.

00 Function Since the refrigerator and hot water tank are built into the machine room, the waste heat of the refrigerator can be used to heat the water in the hot water tank, making it possible to use the space inside the machine room effectively. I can do it.

Furthermore, when performing heat exchange between the refrigerator and the water heater, the refrigerator and the water heater are connected via a heat transfer body such as a thermosiphon or heat pipe connected to the discharge pipe of the compressor, and the discharge pipe A heat diode is configured by arranging the second heat exchanger joined to the heat exchanger at a position lower than the first heat exchanger disposed in the hot water tank, and the heat medium (such as fluorocarbons) in the heat transfer body is Heat is transferred from the refrigerator side to the water in the hot water tank via the refrigerator.

Also, when the discharge gas temperature of the refrigerator is higher than the water temperature of the water heater,
The heat medium is condensed and liquefied in the first heat exchange section in the hot water supply tank, flows down into the second heat exchange section on the refrigerator side, and is vaporized by the discharge gas temperature of the discharge pipe, and as the heat medium circulates, freezing is performed. Heat is exchanged between the machine and the water heater.

Conversely, when the discharge gas temperature of the refrigerator is lower than the water temperature of the water heater, the heat medium is liquefied by the second heat exchange section and remains therein, and the heat medium is not circulated. There is no heat exchange between the refrigerator and water heater. Therefore, a heat transfer body using a thermosiphon etc. acts as a thermal diode.

When the load on the chiller decreases and the discharge gas temperature drops, or when the chiller stops, it can effectively prevent heat backflow from occurring and lowering the hot water temperature in the hot water tank, saving space. This results in improved efficiency and highly efficient use of waste heat.

f. Embodiments Hereinafter, preferred embodiments of the refrigerator with water heater according to the present invention will be described in detail with reference to the drawings. still.

The same parts or equivalent parts as in the conventional example will be explained using the same reference numerals.

In FIGS. 1 and 2, what is indicated by the symbol 1 is:
The main body of the refrigerator is almost box-shaped as a whole, and this main body 1
A machine room 2 is provided in the upper part of the machine room 2, and a refrigerating room 6 equipped with a plurality of storage parts (not shown) is provided in the lower part of the machine room 2.
is provided.

As shown in FIG. 2, the machine room 2 has a substantially rectangular box shape as a whole, and a compressor 4 is installed at one end 2a of the machine room 2.
A refrigerator 7 consisting of a condenser 5 having a cooling fan 5a, a cooling part 5d, etc. is formed in a block shape, and a hot water tank 10 for forming a water heater 9 is provided on the other end side 2b. There is.

A discharge pipe 11 connected to the outlet section 4a of the compressor 4
is connected to the inlet portion 5b of the condenser 5 through the first connecting pipe 12, and the outlet portion 5c of the condenser 5 is connected to the capillary tube 1.
3, it is connected to a cooling section 5d consisting of an evaporator. An outlet section 5e of this cooling section 5d is connected to an inlet section 4b of the compressor 4. Further, the first connecting pipe 12 includes:
A sensor (not shown) connected to a phase shift control circuit (not shown) for controlling the rotation speed of the cooling fan 5a is provided to prevent the temperature of the outlet section 5c of the condenser 5 from falling below a predetermined level. controlled.

A heat transfer body 14 consisting of a loop-shaped thermosiphon is integrally connected to the discharge pipe 11. Built-in heating medium.

The upper part of the heat transfer body 14 is guided into the hot water tank 10, and the hot water tank 10 is provided with a hot water heater 15, a separator 16, a hot water pipe 17, and a water pipe 18. , a hot water supply heater 15, a hot water supply pipe 17, a water supply pipe 18, and the like constitute a water heater 9.

As shown in more detail in FIG. 2, the heat transfer body 14 includes a first heat exchange part 14a formed on the upper part thereof;
The second heat exchange part 14b formed at the lower part thereof is both inclined. Said second heat exchange section 1
4b is directly connected to the discharge pipe 11 as described above, and the discharge pipe 11 is configured to be inclined in line with the second heat exchange section 14b.

As mentioned above, the heat transfer body 14 is connected to the hot water tank 9.
The first heat exchange part 14a is provided to protrude into the hot water tank 9 through a pair of guide holes 9b and 9C formed in the side plate 9a, and the parts other than the first heat exchange part 14a are heat-insulated. A material 14c is formed, which prevents heat exchange with the atmosphere and the water in the hot water tank 9, prevents liquefaction of the heating medium and deterioration of circulation, and prevents heat radiation to the atmosphere when the water temperature is high. . Furthermore, the first and second heat exchange parts 14a and 1
41) is configured in a loop shape by the gas guide tube 14d and the original guide tube 14e, and the gas guide tube 14cl
Inside, the heating medium gas is guided in the direction of arrow A, and inside the original guide tube 14e, the heating medium liquid is guided in the direction of arrow B.

In addition, the heat transfer body 12 is configured to have the second
The first tube end 14f of the heat exchanger 14t) is formed to be the lowest and slope upward toward the second tube end 14g,
The third tube end j4h of the first heat exchange section 14a is formed at the highest position, bends and descends at the fourth tube end 141, and is further descended in the order of the fifth tube end 14j. ing.

The amount of heat medium filled in the heat transfer body 14 is determined by the amount of heat medium filled in the heat transfer body 14
When the operation of the discharge pipe 11 is stopped and the temperature of the discharge pipe 11 becomes lower than a predetermined value, liquefied and retained in the second heat exchange section 14b,
The amount of liquid is sealed so that the liquefied heat medium does not reach the first heat exchange part 14a, and therefore, heat conduction is lower in gas than in liquid, so that heat isolation is effectively performed. There is.

Next, a case will be described in which the refrigerator with water heater according to the present invention is operated in the above configuration.

By turning on the power and starting the ice making cycle.

The refrigerator 7 including the compressor 4 is operated, and high-temperature gas from the compressor 4 flows into the discharge pipe 11, and the second heat exchange section 1
In 4b, heat is exchanged with the liquefied heating medium, and the liquefied heating medium is heated and gasified. As mentioned above, the gasified heat medium reaches the third pipe end 14h through the gas guide pipe 14b which is high in position and temperature, and the first heat exchange part 14a is heated, so that the hot water tank 1 is heated. Heat exchange is performed with the water in the chamber, the water is heated, and the heat medium is liquefied again and returns to the second heat exchange section 14b via the original guide tube 14e.

Therefore, during the period when the heat medium is heated by the second heat exchange section 14b, the heat medium continues to circulate within the heat transfer body 12, and heating of the water in the hot water tank 10 can be continued.

Next, when the cold water production or ice production in the cooling section 5d is completed and the operation of the refrigerator 7 is stopped, the temperature of the discharge pipe 11 begins to decrease and becomes lower than the water temperature in the hot water tank 10, causing heat transfer. The heat medium in the body 14 is no longer heated, liquefies and stays in the second heat exchange section 141), and heat exchange between the refrigerator 7 and the water heater 9 is stopped.

In addition, in the above-mentioned embodiment, heat exchange between the first heat exchange part 14a and the water in the hot water tank 10 is performed in the best condition by the heat insulating material 14c formed on the heat transfer body 14, and furthermore, Although the case has been described in which a thermosiphon is used as the heat transfer body 14, the same effect can be obtained by using, for example, a known heat pipe (not shown). In addition, as a cooling part, a cold water part,
It is possible to use an ice making unit, etc., and the same effect can be achieved not only when applied to a refrigerator but also to a freezer.

g0 Effects of the Invention Since the refrigerator with water heater according to the present invention has one or more structures and functions, it can produce various effects such as the following.

(1) There is no need to provide a separate installation space for the water heater, and a part of one machine room can be used to store the water heater, so the refrigerator equipped with a water heater can be configured compactly and The chamber can be used more widely.

(2) Since the system exchanges heat only when the waste heat temperature on the refrigerator side is higher than the water temperature on the water heater side, heat backflow does not occur even if the waste heat temperature drops, and it is extremely High heat exchange efficiency can be obtained.

(3) Therefore, it is not necessary to control the flow rate, flow direction, etc. of the heat medium and water with horizontal pumps, valves, etc., and it is possible to construct an extremely simple mechanism, and it has excellent durability and A highly reliable refrigerator with a water heater can be obtained.

[Brief explanation of the drawing]

1 and 2 show a refrigerator with a water heater according to the present invention. FIG. 1 is a perspective view showing the entire structure with a part removed, and FIG. 2 is an enlarged cross-section of the main part in FIG. 1. Figure, 3rd
4 are a front view and an enlarged transparent perspective view of the main parts, respectively, showing the conventional structure. 1 is the main body, 2 is the machine room, 3 is the refrigerator compartment, 4 is the compressor, 5a
is a cooling fan, 5 is a condenser, 5d is a cooling unit, 7 is a refrigerator, 9 is a water heater, 10 is a hot water tank, 11 is a discharge pipe,
12 is the first connecting pipe. 14 is a heat transfer body, 14a is a first heat exchange part, 141) is a second heat exchange part, and 14d is a gas guide! , 14e is an original guide tube. Patent applicant: Hoshizaki Electric Co., Ltd. Figure 1 Figure 2

Claims (4)

[Claims] (1), compressor (4) discharge pipe (11), condenser (5)
) and a cooling unit (5d), etc., a machine room (2) for accommodating the freezer (7), and a refrigerator room connected to the machine room (2). (3) and a hot water tank (10) provided in the machine room (2), the hot water tank (10) is equipped with
0) A refrigerator with a water heater, characterized in that the refrigerator is configured to heat water inside the refrigerator. (2) a heat transfer body (14) provided in the discharge pipe (11) of the refrigerator (7);
The refrigerator with a water heater according to claim 1, characterized in that one end of the refrigerator is provided in the hot water tank (10). (3) The refrigerator with a water heater according to claim 1, wherein the heat transfer body (14) is constituted by a thermosiphon having a heat medium therein. (4) The refrigerator with a water heater according to claim 1, wherein the heat transfer body (14) is a heat pipe.