JPH0120624Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to water chillers and hot water machines, and particularly relates to an improvement in the structure around the temperature fuse.

[Technical background of the invention and its problems]

In the case of a water cooler/heater, as shown in Fig. 1, a cooling pipe b and a heating heater c constituting a refrigeration cycle are provided around a liquid storage tank a, and the liquid stored in the liquid storage tank a is heated. Cooling or heating is performed through tank a. and,
The refrigeration cycle is operated by a temperature controller for cold water, and the heater c is operated by a bimetal thermostat d, which is a temperature controller installed around the liquid storage tank a.
This is done by detecting the temperature of the liquid in the liquid storage tank a. In particular, as shown in Figure 2, the bimetal thermometer d is equipped with a silicone cover e to prevent its contacts 1 and 1 from coming into contact with condensation generated in the liquid storage tank a and even the heater c during cooling operation. The system is equipped with a cover e that guarantees optimal and stable operation based on protection from the outside world, and is intended to maintain good cold water and hot water heating functions.

By the way, in this type of water cooler/heater, a temperature fuse f is generally provided around the liquid storage tank a to prevent abnormal operation of the heater c. Conventionally, the temperature fuse f has been installed by constructing a space for installing the fuse separately around the liquid storage tank a, and by using members constituting the water cooler/heater to attach the temperature fuse f. Specifically, conventionally, a fuse installation space h is formed in glass wool g as a heat insulating material provided around a liquid storage tank a, and a temperature fuse f is installed in this fuse installation space h, and a fuse mounting bracket i and an electric A structure is adopted in which a tank cover k is attached as an installation part using a mounting base j made of an insulating material.

By the way, when installing the temperature fuse f, it is required that the structure is simple and the cost is low.

However, the above-mentioned structure in which a separate fuse installation space h is formed and a temperature fuse f is mounted in this fuse installation space h inevitably requires separate mounting members such as fuse mounting brackets i and mounting bases j. Therefore, there is a problem in that it inevitably becomes complicated and costs increase. Moreover, after installing the temperature fuse f, glass wool g is filled around the outside of the liquid storage tank a to provide insulation, but at this time, since the temperature fuse f is exposed, the glass wool g does not touch the temperature fuse f. It is required to be carefully inserted to avoid
Since the assembly work of a water cooler/heater is troublesome, there is a need for a simple, inexpensive, and easy-to-assemble temperature fuse f that can be attached.

[Purpose of invention]

This invention was made in view of the above circumstances, and its purpose is to provide a hot and cold water machine that is simple and inexpensive, and can be fitted with a temperature fuse for easy assembly. There is a particular thing.

[Summary of the idea]

That is, this invention forms a fuse housing chamber in the cover that protects the temperature controller, and by incorporating the temperature fuse in this fuse housing chamber, the temperature fuse can be built in using the cover without requiring a separate mounting member. The purpose is to easily attach a temperature fuse, and also to eliminate the exposure of the temperature fuse, which would be a hindrance to assembly work.

[Example of idea]

This invention will be explained below based on an embodiment shown in FIGS. 3 and 4. Figure 3 shows the whole water cooler/heater, and 1 in the figure shows the cabinet 3 on the base 2.
and front panel 4 are installed, and the operation space 1 is installed on the front.
The main body is formed by forming a. Also, main body 1
A liquid storage tank system 6 is installed on a base 2 constituting the main body 1 via a frame 5, and a machine room 7 is formed at the lower side of the main body 1. The liquid storage tank system 6 mainly includes a liquid storage tank 10 whose bottom side and outer peripheral surface are covered with glass wool 8 as a heat insulating material, and whose glass wool layer is sealed with a tank cover 9. It is constructed by providing a wound cooling pipe 11 and a heater 12 at the bottom of the tank. Further, a bimetal thermostat 13 as a temperature controller is provided on the bottom side of the tank, using the inclined surface formed on the bottom side of the liquid storage tank 10 as a conductive part. However, the cooling pipe 11, the heater 12, and the bimetal thermostat 13 are provided around the liquid storage tank 10. On the other hand, a compressor 14 is installed in the machine room 7, a wire condenser 15 attached to the back side of the cabinet 3, and the cooling pipe 11
This connects them to form a refrigeration cycle. and,
The bimetal thermostat 13 is electrically connected to the compressor 14 and heater 12 power supply circuit system (not shown) that constitute this refrigeration cycle, and heats the liquid based on the detection of the liquid temperature, that is, the temperature on the liquid storage tank 10 side. The operation of the heater 12 is controlled as required. However, the bimetallic thermometer 13 cools and keeps the liquid contained in the liquid storage tank 10 through the cooling pipe 11 in a refrigeration cycle operation, and also cools the liquid stored in the liquid storage tank 10 through the heating heater 1.
2, it is now possible to heat and keep warm. Note that 16 is a blower for dissipating heat from the wire capacitor. On the other hand, a water intake mechanism 17 is provided on the upper side of the operation space 1a of the main body 1, located at a lower level than the liquid storage tank 10. This water intake mechanism 17 includes a normally closed type valve part (not shown), and a valve body 20 in which a faucet 18 and an operation lever 19 for opening and closing the valve are juxtaposed in the depth direction and protrude. The inlet of the valve body 20 is connected to an introduction pipe 2 buried in glass wool 8.
1 to a water outlet 21 provided on the inner bottom surface of the liquid storage tank 10. The faucet 18 opens downward, and the operating lever 19 protrudes toward the center of the operating space 1a. Holding a container (not shown) such as a pot in your hand, press the operating lever 19 with the container. By rotating the liquid storage tank 10, the cold liquid or warm liquid stored in the liquid storage tank 10 can be transferred to the water outlet 2.
1, water can be appropriately taken into the container from a faucet 18. Also, operation space 1
A drainage tank 22 equipped with a drainboard (not shown) is provided on the lower side of a, and can receive excess liquid during water intake. Note that 23 is an upper lid that opens and closes the opening of the liquid storage tank 10, and 4a is a drain board.

On the other hand, the chiller/hot water machine configured in this way is provided with a temperature fuse 24 to prevent abnormal operation. This temperature fuse 24 is attached to the bimetal thermostat 13, and its structure is shown in detail in FIG. Here, before describing the mounting structure of the temperature fuse 24, which is the main part of this invention, the bimetal thermostat 13 will be explained. Although details are not shown, the bimetal thermostat 13 is attached to the front side of the support flange 31 fixed to the tank 10. A temperature sensing portion 25 is disposed at the rear side, and a contact portion 26 having contact points 26a, 26a protruding from the rear side is disposed. Wirings 27, 27 connected to the compressor 14 and the power supply circuit system (not shown) of the heater 12 are connected to the contacts 26a, 26a of the contact portion 26. In addition, the contact portion 26 has its contact 2
A cover 28 made of silicon and having a cylindrical shape, for example, is attached to cover 6a and 26a from the surroundings. The opening at one end of the cover 28 is attached to the back surface of the support flange 31 via a seal member 29 in an airtight manner. The other end opening is the wiring 27,
27 through a sealing member 29 in an airtight manner, and the liquid storage tank 10 and heating heater c are connected to the contacts 26a and 26a during cooling operation.
This prevents dew that adheres to (generates) from entering, and has the same structure as the conventional structure mentioned above. A temperature fuse 24 is attached to a protective cover 28 attached to the bimetal thermostat 13.

Here, the mounting structure of the temperature fuse 24 will be described. In the figure, 29 is a fuse housing chamber formed in the peripheral wall of the cover 28. This fuse housing chamber 29 is designed so that the temperature fuse 24 can be positioned and fixed in that space alone, and a lead wire outlet 30 that also serves as an inlet is provided on the inner wall.
is formed. Then, the lead wires 24a, 24a are inserted into the fuse housing chamber 29 using the cover 28.
The temperature fuse 24 is housed and installed in a state where it is led out into the inner cavity of the tube. However, the temperature fuse 24 is simply built into the fuse accommodating chamber 29 and is attached without requiring any other members. And temperature fuse 24
Each lead wire 24a, 24a connects one contact 26a of the bimetal thermostat 13 and its contact 2.
The bimetal thermostat 13 as well as the temperature fuse 24 are connected in parallel to the wiring 27 connected to the wire 6a.
Even the contact system and connection parts are protected airtight using the cover 28. Such a temperature fuse 24 is arranged around the liquid storage tank 10 together with the bimetal thermometer 13, and the temperature fuse 24 is arranged around the liquid storage tank 10.
It is now possible to prevent abnormal operation by monitoring the side temperature.

Thus, by incorporating the temperature fuse 24 into the cover 28, it is possible to mount the temperature fuse 24 without the need for separate mounting members such as fuse mounting brackets and mounting bases, which were required in the past. Therefore, the temperature fuse 24 can be installed with a simple structure and at low cost. Moreover, unlike in the past, the glass wool 8 does not chip, so the liquid storage tank 10 can be effectively insulated with a small amount of glass wool 8, and the liquid storage tank 10 can be effectively insulated while maintaining a high insulation effect. The size can be reduced by about 10 mm. Furthermore, since the temperature fuse 24 is built-in, there is no exposed part to the outside, so filling of the glass wool 8 can be done without worrying about the temperature fuse 24, making it easier to assemble the water cooler/heater. There are advantages. In addition, since the temperature fuse 24 is disposed near the bimetal thermostat 13 and is built into the cover 28, it can operate at a low operating temperature and has the advantage of excellent responsiveness.

In the above-mentioned embodiment, this invention was applied to a water cooler/heater using a bimetallic thermostat as a temperature controller, but it goes without saying that this invention can also be applied to a water cooler/heater equipped with other temperature controllers. do not have.

[Effect of idea]

As explained above, according to this invention, by incorporating a temperature fuse into the cover of the temperature controller,
Temperature fuses can now be mounted without the need for separate mounting parts such as fuse mounting brackets and mounting stands, which were previously required, resulting in a simple structure.
Installation can be done at low cost.
Moreover, unlike conventional methods, the insulation material does not chip, so it is possible to effectively insulate the liquid storage tank with a small amount of insulation material. Miniaturization can be achieved. In addition, since the temperature fuse is built into the cover, there is no exposed part to the outside, so it is easy to fill in insulation materials such as glass wool, and the water cooler and hot water machine can be assembled easily. There are advantages. Furthermore, the built-in temperature fuse has the advantage that a temperature fuse with a low operating temperature setting can be used.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional hot and cold water machine, Fig. 2 is a sectional view showing its temperature controller, Figs. 3 and 4 show an embodiment of this invention, and Fig. A sectional view of the machine, FIG. 4 is a sectional view showing the mounting structure of the temperature fuse. 10... Liquid storage tank, 11... Cooling pipe, 12... Heater, 13... Bimetal thermometer (temperature controller), 24... Temperature fuse, 2
8...Cover, 29...Fuse containment room.

Claims (1)

[Scope of utility model registration request] In a liquid storage tank with insulation around it,
In addition to providing a cooling pipe and a heater that make up the refrigeration cycle, it also includes a temperature controller that detects the temperature of the liquid in the liquid storage tank and controls the operation of the heater, and a temperature fuse that stops abnormal operation. A hot and cold water machine characterized in that a fuse housing chamber is formed in a cover that is attached to the temperature controller and protects the temperature controller from the outside world, and the temperature fuse is built into the fuse housing chamber. .