JPS6231003Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a kitchen workbench, such as a cooking table or a sink, which incorporates a part of a refrigerant machine and a hot water supply device that utilizes the exhaust heat of the refrigerator.

Conventional refrigeration machines and water heaters had to be assembled and constructed separately from the kitchen workbench at each site, which took a long time to assemble and required space to be installed separately from the kitchen workbench. However, construction is difficult depending on the installation location, and it ends up being large and expensive, which increases construction costs.Furthermore, the refrigerator and water heater are exposed outside, making it untidy and unsightly, and exposed to the outside air and attracting dust. It is susceptible to dirt and corrosion during short periods of exposure to moisture.

In view of the above-mentioned drawbacks of the conventional method, this proposal incorporates a part of the refrigerator and a water heater that utilizes the exhaust heat of the refrigerator into the casing separately at a factory, etc., and positions and installs a kitchen workbench at the construction site. The purpose of the present invention is to provide a kitchen workbench that can be constructed by simply connecting the remaining piping of a separately installed refrigerator and that can constantly supply hot water at a predetermined temperature.

A first embodiment of the present invention applied to a cooking counter will be described with reference to Figs.

As shown in FIG. 1, the kitchen worktop A ₁ of this proposal consists of a compressor 1, a condenser 2, and a liquid receiver 3.
A liquefaction unit 5, which constitutes a part of a refrigerator, connects and communicates a compressor 1 and a condenser 2 with each other through a discharge pipe 4, and a water heater 7, which is equipped with a sealed hot water storage tank 6 and utilizes the exhaust heat of the liquefaction unit 5. , is integrated into an oblong stainless steel horizontal casing 9 whose lower bottom four corners are supported by support legs 8, and connects the inlet end 10a of the refrigerant gas pipe 10 communicating with the compressor 1 and the refrigerant liquid in the liquid receiver 3. The back portion of the workbench 14 has the outlet end 11a of the pipe 11, the inlet end 12a of the water supply pipe 12 connected and communicated with the hot water tank 6, and the outlet end 13a of the hot water discharge pipe 13 mounted on the casing 9. The outlet ends 15a of the drain pipes 15 which are connected and communicated with the hot water storage tank 6 at the upper end of the drain pipe 14a are exposed at the lower bottom surface of the casing 9, respectively, and are connected to the kitchen workbench _A1 , the electromagnetic shut-off valve A, the expansion valve B, and the evaporative cooling. The pipes N and H of the evaporative refrigeration unit B, which constitutes the rest of the refrigerant machine, can be freely connected to the water pipe α, the faucet or hot water conduit pipe β, and, if necessary, the drain induction pipe γ, through joints (not shown). become exposed to

As shown in FIG. 1, the hot water supply device 7 includes a check valve 16 in the middle of a discharge pipe 4 connecting a compressor 1 and a condenser 2 in a liquefaction unit 5, and a coiled exhaust installed inside a closed hot water storage tank 6. The heater 17 and the discharge pressure control valve 18 are connected to each other through the intermediary, and one end of the pressure equalizing bypass pipe 20 with the manual stop valve 19 interposed in the middle is connected to the check valve 1.
The other end on the 6 outlet side is connected to the 4 parts of the discharge pipe on the outlet side of the discharge pressure control valve 18, respectively, and the bypass discharge pipe 22 is connected to the discharge pipe 13 on the outlet side of the pump 21 interposed in the middle. Drain piping 15 on the outlet side of the manual drain valve 23 interposed in the middle
An overflow pipe 24 joins the water supply pipe 12, and a ball tap 25 is attached to the inner end of the water supply pipe 12, which penetrates the hot water tank 6, and can freely supply water under level control.

Reference numeral 26 in the figure is an operation display panel attached to a central front plate 27 that is removably attached to the center of the front of the casing 9, and displays the pump earth leakage breaker 28, the pump switch 29, and the hot water storage L in the hot water tank 6. For example, a lamp 30 that lights up when the temperature is higher than the desired 40°C;
A lamp 31 and a thermometer 32 that turn on when the temperature is below the desired 40°C are mounted, and a ventilating armor plate 33 is mounted on the front right side of the casing 9, and a removable cover 34 for inspecting the liquefier unit 5 of the refrigerator is installed on the front right side. Each of them will be stretched.

Next, a second embodiment of the present invention will be explained with reference to FIG.

In the kitchen workbench A ₂ of the present invention, the workbench 35 is different from the workbench 1 in the kitchen workbench A ₁ of the first embodiment.
One end of 4 is extended and provided with a protrusion, and the lower side of the protrusion is connected to the pipes N and E of the evaporative refrigeration unit B and the water pipe α.
There is no room for connection piping with the hot water supply pipe β, and the inlet end 10a of the refrigerant gas pipe 10 of the liquefaction unit 5, the outlet end 11a of the refrigerant liquid pipe 11, and the inlet end of the water supply pipe 12 are provided on the side surface 9a of the casing 9 on the side where there is room. 12a, the outlet end 13a of the hot water discharge pipe 13 is exposed.

The rest is the same as the first embodiment, so the same parts are given the same reference numerals.

A third embodiment of the present invention will be described with reference to FIG.

In the kitchen workbench _A3 of the present invention, the support legs 36 are made longer than the support legs 8 in the kitchen workbench _A1 of the first embodiment, and the lower side of the casing 9 is connected to the pipes of the evaporative refrigeration unit B and the water pipes. The refrigerant gas pipe 1 of the liquefaction unit 5 is installed on the bottom surface of the casing 9, leaving room for connection pipes with α, hot water lead pipe β, and drain guide pipe γ.
0 inlet end 10a, outlet end 11a of refrigerant liquid pipe 11,
The inlet end 12a of the water supply pipe 12, the outlet end 13a of the hot water discharge pipe 13, and the outlet end 15a of the drain pipe 15 are exposed and suspended.

The rest is the same as the first embodiment, so the same parts are given the same reference numerals.

Further, a fourth embodiment of the present invention will be explained with reference to FIG.

In the kitchen workbench A ₄ of the present invention, the casing 37 has an elongated vertical shape compared to the casing 9 in the kitchen workbench A ₁ of the first embodiment. has a built-in water heater 7 in two stages and a work table plate 38.
The width is shortened to match the casing 37, while a cover 39 for inspecting the liquefaction unit 5 is installed on the upper front half of the casing 37, a ventilating armor plate 40 is installed on the right side of the lower front half, and a ventilating armor plate 40 is installed on the left side of the lower front half. An operation display that includes a pump earth leakage breaker 28, a pump switch 29, a lamp 30 that lights up when the water L for hot water supply in the hot water storage tank 6 is, for example, 40°C or higher, a lamp 31 that lights up when the temperature is below the desired 40°C, and a thermometer 32. The front plate 41 to which the panel 26 is attached is attached to each other in a removable manner.

The rest is the same as the first embodiment, so the same parts are given the same reference numerals.

Since the present invention is constructed as described above, the kitchen workbenches A ₁ , A ₂ , A ₃ , and A ₄ of the invention are separately manufactured in advance at a factory, etc., and then transported to the site and installed at the desired position. Next, the pipes N and E of the vaporization refrigeration unit B in the separately installed refrigerator are jointed to the inlet end 10a of the refrigerant gas pipe 10 and the outlet end 11a of the refrigerant liquid pipe 11 of the liquefaction unit 5, respectively, as shown in FIG. In addition, the water pipe α and the inlet end 12 of the water supply pipe 12
a, Output end 13a of the hot water discharge pipe 13 and faucet or hot water conduit pipe β, Output end 15a of the drain pipe 15 as necessary
and the drain induction pipe γ and the joint.

First, like a normal refrigerator, the electromagnetic on-off valve (a), expansion valve (b), and evaporative cooler (c) in the evaporative refrigeration unit B, and the compressor 1, condenser 2, and liquid receiver 3 in the liquefaction unit 5 are operated.

The refrigerant gas evaporated and gasified by the evaporative cooler C in the evaporative refrigeration unit B is suctioned and compressed by the compressor 1 through piping 2 and the refrigerant gas piping 10.
At this time, the refrigerant gas is compressed to a pressure level set by the discharge pressure control valve 18, passes through the discharge pipe 4, and exhausts heat to the hot water storage water L through the heat exhaust device 17. At this time, since the discharge pressure control valve 18 is provided, regardless of the temperature of the cooling water and cooling air to the condenser 2, if the temperature of the hot water storage water L is lower than the temperature corresponding to the set pressure of the discharge pressure control valve 18, the refrigerant gas is gives condensation heat to hot water storage water L for condensation.

The condenser 2 then functions as a device for supercooling the refrigerant liquid. Thereafter, the refrigerant liquid flows sequentially from the liquid receiver 3 through the refrigerant liquid pipe 11 and the pipe H to the expansion valve RO of the refrigeration unit B and the evaporative cooler C, completing one refrigeration cycle.

Next, the temperature of the stored water L for hot water supply is displayed on the thermometer 32, and when it becomes higher than the temperature corresponding to the set pressure of the discharge pressure control valve 18, the lamp 30 lights up and the refrigerant gas cannot be condensed and liquefied in the hot water exhaust heat exchanger 17. The pressure starts to increase, and then the discharge pressure control valve 1
8 begins to open in order to maintain the set pressure, and in the hot water exhaust heat exchanger 17, heat exchange is performed for only the portion of the refrigerant gas whose temperature is higher than that of the stored water L for hot water supply, and condensation is performed by the condenser 2.

Since the condenser 2 capacity is originally designed for the purpose of cooling and condensing superheated refrigerant gas, when the load of superheated refrigerant gas is removed, it acts as a subcooler for the refrigerant, and for this reason, the refrigeration cycle flow is reduced. stability is improved.

Thus, in the water heater 7, the discharge pressure control valve 18 is provided on the outlet side of the heat exhaust device 17, so that the amount of heat exhausted to the water heater 7 is prevented from being reduced due to a decrease in the condensing pressure of the condenser 2 due to a decrease in outside temperature. In addition to stably supplying hot water temperature, a check valve 16 is installed to prevent the liquid condensed in the heat sink 17 from returning to the compressor 1 when the compressor 1 is stopped, and prevents valve cracking when the compressor 1 is started. This prevents accidents caused by liquid compression.

Furthermore, a pressure equalizing bypass pipe 20 is provided between the outlet of the check valve 16 and the outlet of the discharge pressure control valve 18, and a stop valve 19 is interposed between them. It functions as a bypass pipe to stabilize the operation of the discharge pressure control valve 18, and in the event that the discharge pressure control valve 18 fails, it is manually opened to the maximum opening degree and functions as a bypass pipe.

In addition, by providing the discharge pressure control valve 18, the discharge pressure of the refrigerant liquid is set at a high pressure in winter, etc., so the pressure can be higher than in the conventional system, so the operating pressure difference between the expansion valves becomes larger. , the decrease in the capacity of the expansion valve is reduced, and a stable flow rate of refrigerant liquid can be ensured.

Then, the hot water heat exhaust device 17 reduces the load on the condenser 2 by the amount of heat exhausted, so the condenser 2 can subcool the refrigerant liquid by that amount, improving the stability of the refrigeration cycle and increasing the capacity of the refrigeration system. can get.

Moreover, regardless of changes in outside air conditions, if the lower limit of the set temperature of the hot water storage water L is set using the discharge pressure control valve 18, the hot water supply device 7 can suppress the exhaust heat of the compressor 1 until the water temperature rises to that temperature. Since all of the water is supplied to the hot water supply storage water L, the water temperature rises quickly and is efficient compared to the hot water supply exhaust heat generator 17 of the same capacity. And since it is not affected by changes in outside air conditions, it is possible to set the hot water temperature throughout the year.

Therefore, turn the pump switch 29 to turn on the pump 2.
1, hot water at a predetermined temperature can always be obtained through the faucet or the hot water pipe β.

However, in this case, the liquefaction unit 5 and the hot water supply device 7, which constitute part of the refrigerator, are compactly integrated in a separate factory, etc., so the assembly parts are standardized and can be mass-produced, maintenance, inspection and repair are easy, and manufacturing costs are reduced. It can be significantly reduced.

Also, depending on the environmental conditions of the installation location, main plan A ₁ ,
It is sufficient to select one of A ₂ , A ₃ , and A ₄ .

On-site construction is simplified and shortened, and workbench
Liquefaction unit 5 other than A ₁ , A ₂ , A ₃ , A ₄ installation space
The liquefaction unit 5 and the water heater 7 can also be installed in the casing 9, without having to consider the installation room for the water heater 7.
37, it has a long life and excellent appearance, and also has excellent practicality and usefulness, such as fulfilling the original function of a kitchen workbench.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the combined operation of the water heater built into this project and the liquefaction unit that constitutes a part of the refrigerator;
FIG. 2 is an external perspective view showing the first embodiment of the kitchen workbench of the present invention, and FIG. 3 is a front view showing the same/third embodiment.
Figure 4 is an external perspective view showing the third embodiment;
The figure is an external perspective view showing the fourth embodiment. A ₁ , A ₂ , A ₃ , A ₄ ... Kitchen workbench, B ... Evaporative refrigeration unit, L ... Water storage for hot water supply, α ... Water pipe, β ... Hot water conduit pipe, γ ... Drain induction pipe ,
1...Compressor, 2...Condenser, 3...Liquid receiver, 4
...discharge pipe, 5 ... liquefaction unit, 6 ... closed hot water storage tank, 7 ... hot water supply device, 8, 36 ... support leg, 9,
37... Casing, 9a... Side, 10... Refrigerant gas piping, 10a, 12a... Inlet end, 11...
Refrigerant liquid piping, 11a, 13a, 15a... Output end,
12...Water supply piping, 13...Hot water discharge piping, 14,3
5, 38...Working table plate, 14a...Back part, 1
5...Drain piping, 16...Check valve, 17...
Heat exhauster, 18...Discharge pressure control valve, 19...Manual stop valve, 20...Pressure equalization bypass pipe, D, E...Piping.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A hot water supply device that includes a hot water storage tank and utilizes the exhaust heat of a refrigerator, and a liquefaction unit that constitutes a part of the refrigerator, are integrated into a casing on which a work table is mounted. A water supply pipe, a hot water discharge pipe, and a drain pipe are connected to the hot water storage tank, and the inlet end of the water supply pipe is a water pipe, the outlet end of the hot water discharge pipe is a hot water conduit pipe, and the outlet end of the drain pipe is a water pipe. The outlet end of the vaporization refrigeration unit piping and the refrigerant liquid piping of the liquefaction unit are exposed outside the casing so as to be freely connected to the drain induction piping and their corresponding joints, while the inlet end of the refrigeration gas piping of the liquefaction unit is separately configured. A kitchen workbench in which an outlet end is exposed outside the casing so that the outlet end can be freely connected to the inlet end of the evaporative refrigeration unit piping at a corresponding joint. 2. The liquefaction unit consists of a compressor, a condenser, and a liquid receiver, and the compressor and condenser are connected to each other by a discharge pipe, and the inlet end of the refrigerant gas pipe communicating with the compressor is connected to the vaporization unit pipe. Utility model registration Claim 1, wherein the outlet end of the refrigerant liquid piping communicating with the liquid receiver is exposed outside the casing so as to be freely connected to the inlet end of the evaporative refrigeration unit piping at corresponding joints. The kitchen workbench mentioned. 3. The hot water supply system includes a check valve in the middle of the discharge pipe connecting the compressor and condenser of the liquefaction unit, and a heat exhaust device installed inside the hot water storage tank that communicates the water supply pipe, hot water discharge pipe, and drain pipe, respectively. One end of the pressure equalizing bypass pipe with a connecting valve interposed in the middle is connected to the outlet side of the check valve, and the other end is connected to the outlet side of the discharge pressure control valve. The inlet end of the water supply pipe is the outlet end of the water supply pipe, the outlet end of the discharge pipe is the inlet end of the hot water guide pipe, and the outlet end of the drain pipe is the inlet end of the drain guide pipe. The kitchen workbench according to claim 1 or 2, wherein the input end and the respective corresponding joints are exposed outside the casing so as to be freely connected to each other. 4. The kitchen workbench according to claim 1, 2, or 3 of the utility model registration claim, wherein the casing is horizontally long. 5. The kitchen workbench according to claim 1, 2, or 3 of the utility model registration claim, wherein the casing has a vertically elongated shape. 6 The inlet end of the refrigerant gas piping and the outlet end of the refrigerant liquid piping are the upper end of the back part of the workbench, the outer surface of the casing on the side where one end of the workbench is extended, or the four corners are supported by high support legs. Utility model registration claims 1, 2, and 3
4. The kitchen workbench according to paragraph 4 or paragraph 5. 7. The inlet end of the water supply piping and the outlet end of the hot water discharge piping should be the upper end of the back part of the workbench, the outer surface of the casing on the side where one end of the workbench is extended, or the four corners supported by high support legs. Utility model registration claims 1, 3, 4, 5, or The kitchen workbench described in item 6.