KR100418441B1 - Ice storage type air conditioner - Google Patents

Abstract

The present invention relates to an outdoor unit integrated heat storage cooling device,

Particularly, a separate machine room is formed inside the case of the heat storage tank, and equipment for compressing, condensing, and expanding the refrigerant is integrally formed in the machine room, and the coolant having a room temperature circulated inside the heat storage chamber is inside the heat storage room. By supplying evenly to the whole, it forms a means to melt the frozen material around the cooling pipe as a whole uniformly, so that it is possible to fill the refrigerant at the production site, and to supply the refrigerant with the appropriate pressure. In addition, it is possible to reduce the labor time by not having to connect the refrigerant supply side and the cooling pipe in the field, and the outdoor unit integrated type to improve the cooling efficiency significantly by allowing the frozen material frozen in the cooling pipe to melt evenly as a whole. It relates to a heat storage cooling device.

Description

Outdoor unit integrated heat storage air conditioner {Ice storage type air conditioner}

The present invention relates to an outdoor unit integrated regenerative cooling device, and in particular, it is possible to ship a product by filling a refrigerant with a suitable amount of refrigerant as it can be shipped from the production site, and the refrigerant supply side and the cooling pipe are connected in the field. The present invention relates to an outdoor unit integrated regenerative air-conditioning device, which can reduce work man-hours and improves cooling efficiency by allowing the frozen ice frozen in the cooling pipe to melt evenly as a whole.

In general, the heat storage air-cooling device is a device for cooling indoor air by circulating the cooling water generated by melting ice in the heat storage tank to the indoor unit during the day time by freezing ice in the heat storage tank.

1 is a view showing a conventional heat storage type air conditioner,

By compressing, condensing and expanding the refrigerant at night, the outdoor unit 50 for supplying the low-temperature and low-pressure liquid refrigerant to the heat storage tank 60 and the cooling water filled therein using the refrigerant supplied from the outdoor unit 50 are frozen. A heat storage tank 60 which accumulates cold heat and is operated during the day, and receives a low-temperature cooling water supplied from the heat storage tank 60 to heat-exchange the cooling water and hot air to supply cold air to the indoor unit 70. It consists of.

In the conventional heat storage type air conditioner configured as described above, the outdoor unit 50 operates by using a low-cost late night electricity at a late night time.

The outdoor unit 50 includes a compressor, a condenser, an expansion unit, and the like, and pressurizes the low-temperature and low-pressure gas refrigerant circulated in the heat storage tank 60 with high-temperature and high-pressure gas, and the gas refrigerant expands with the condenser. While passing through the portion, it is converted into a liquid of low temperature and low pressure and supplied to the heat storage tank 60.

The coolant supplied to the heat storage tank 60 causes the cooling water to freeze while circulating inside the heat storage tank 60, and the freezing bodies of the heat storage tank 60 melt and cool in the daytime and supply cold coolant to the indoor unit 70.

The indoor unit 70 is to cool the air by cooling the air using the cooling water supplied from the heat storage tank 60 to cool the room.

In the conventional heat storage air conditioner as described above, the outdoor unit 50 and the heat storage tank 60 are connected by separate connection pipes 51.

However, in the conventional heat storage type air conditioner, since the outdoor unit 50 and the heat storage tank 60 are connected by separate connection pipes 51, in order to install the air conditioner in the field, the outdoor unit 50 and the heat storage tank are respectively located in separate places. After installing the 60, the outdoor unit 50 and the heat storage tank 60 must be connected as the connecting pipe 51, and thus the refrigerant must be filled in the field as the connection pipe 51 can only be connected in the field. As a result, there is a problem in that it does not accurately fill the refrigerant of the appropriate pressure.

In addition, in the conventional heat storage type air conditioner, since the equipment for evenly distributing the cooling water having passed through the indoor unit is evenly applied to the inside of the heat storage tank, the freezing body inside the heat storage tank melts from one side, whereby the temperature of the cooling water supplied to the indoor unit is constant. There was also a problem that the cooling efficiency of the cooling device is lowered so as not to be maintained.

Therefore, the present invention for solving the above problems is to form a separate machine room in the case of the heat storage tank, integrally formed equipment for the compression, condensation, expansion of the refrigerant in the machine room, and circulating the indoor unit in the heat storage chamber Cooling water at room temperature is evenly supplied to the inside of the heat storage chamber to form a means to melt the frozen material around the cooling pipe as a whole, so that the refrigerant can be filled and shipped at the production site. By filling the refrigerant with pressure, the product can be shipped, and the labor cost can be reduced by not having to connect the refrigerant supply side and the cooling pipe in the field, and the frozen body of the cooling pipe melts evenly as a whole. The cooling efficiency is greatly improved and the circulation distance of the refrigerant is shortened. It is an object of the present invention to provide an outdoor unit integrated regenerative cooling device in which the efficiency of the L-compressor is improved, whereby ice making efficiency and energy consumption efficiency are improved.

The present invention for achieving the above object,

An indoor unit which cools the air using the supplied cooling water and supplies the air to the room;

A heat storage tank that freezes a certain amount of ice in the late night to accumulate cold air, and circulates the cooling water generated while the ice frozen in the late night melts to the indoor unit to cool down; In the regenerative cooling device configured to include,

Dividing the inside of the case of the heat storage tank divided into heat storage chamber and the machine room, the cooling pipe for the circulation of the refrigerant is installed in the vertical direction in the heat storage chamber vertically installed, each cooling pipe is inserted into the top and the middle of the heat storage chamber Horizontally install the upper and lower plates with a plurality of insertion holes and a plurality of flow holes for uniform flow of cooling water at regular intervals, and the coolant at room temperature circulating the indoor unit at the upper end of the heat storage chamber to the total area of the heat storage chamber. A distribution pipe having a plurality of distribution holes to distribute evenly to be formed to branch from the cooling water inlet,

At the lower end of the heat storage chamber, a discharge pipe having a plurality of suction holes for evenly sucking the low-temperature cooling water circulated inside the heat storage chamber is connected to the cooling water outlet.

In the machine room, a compressor, a condensing coil, and an expansion valve are arranged in series in order to compress, condense, and expand the refrigerant circulating through the cooling pipe, and a fan for promoting heat exchange operation of the refrigerant is formed above the machine room. It features.

The distribution holes of the distribution pipes are formed to face each other on both sides of the distribution pipes.

1 is a view showing a conventional regenerative cooling device.

Figure 2 is a view showing an outdoor unit integrated heat storage cooling device of the present invention.

3 is a cross-sectional view showing an operating state of the present invention.

Figure 4 is a plan view showing a lower plate applied to the present invention.

5 is a plan view showing a top plate applied to the present invention.

Figure 6 is a perspective view showing a heat storage tank applied to the present invention.

Figure 7 is a plan sectional view showing a distribution pipe applied to the present invention.

※ Explanation of code for main part of drawing

1: indoor unit, 2: heat storage tank,

3: connecting pipe, 4: heat storage chamber,

5: machine room, 11: cooling pipe,

12: top, 13: bottom,

12a, 13a: insertion hole, 12b, 13b: flow hole,

14: distribution pipe, 15: distribution hole,

16: water supply, 21: compressor,

22: condensing coil, 23: expansion valve,

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 2 to 7.

According to the above drawings, the present invention is roughly composed of an indoor unit 1 and a heat storage tank 2.

The indoor unit 1 cools and re-supplies the air in the room by using the coolant of low temperature supplied from the heat storage tank 2, and the heat storage tank 2 accumulates cold air by using a late-night electricity, It has a function of supplying the cooling water to the indoor unit (1), the indoor unit (1) and the heat storage tank (2) is connected by a separate connection pipe (3).

The greatest feature of the present invention is that the heat storage chamber (4) and the mechanical chamber (5) integrally formed in the heat storage tank (2), the compressor 21 having a function of an outdoor unit inside the machine chamber (5), the condensing coil (22) ), Expansion valve 23, fan 24, and so on.

Looking at the configuration of the heat storage tank (2) as follows.

The heat storage chamber 4 is formed on one side by dividing the case 2a of the heat storage tank 2, and the machine chamber 5 is formed on the other side.

In the heat storage chamber 4, a cooling pipe 11 for circulating refrigerant is installed in the vertical direction, and upper and lower plates 12 and 13 are horizontally installed at the upper end and the middle of the heat storage chamber 4, respectively. .

The upper plate 12 and the lower plate 13 are intended to allow the cooling water to flow evenly while supporting a plurality of cooling pipes 11 built in the heat storage chamber 4, as shown in FIGS. 4 and 5. A plurality of insertion holes 12a are formed in the 12 to allow the upper portion of the cooling pipe 11 to be inserted, and a flow hole 12b for the flow of the cooling water is formed between the insertion holes 12a. It is.

In addition, the lower plate 13 is provided with a plurality of circular insertion holes 13a for inserting the middle portion of the cooling pipe 11, and flow holes 13b for equal flow of cooling water between the insertion holes 13a. ) Is formed.

The upper plate 12 and the lower plate 13 serve to fix the cooling pipes 11 installed in the longitudinal direction, and at the same time, the ice bodies frozen in the cooling pipes 11 are lifted by their buoyancy. Prevents.

At the top end of the heat storage chamber 4, a distribution pipe 14 for evenly distributing the cooling water at room temperature supplied from the indoor unit 1 to the entire area of the heat storage chamber 4 is formed.

As shown in FIG. 7, the distribution pipe 14 is branched from the cooling water inlet 17 formed at one side of the heat storage chamber 4, and is formed in a plurality of places. The distribution pipes 14 are opposed to each other on both sides of the distribution pipe 14. A plurality of distribution holes 15 are formed at regular intervals so that the cooling water supplied to the distribution pipe 14 is evenly discharged through the distribution holes 15.

On the other hand, the inner lower end of the heat storage tank (2) is formed so that the discharge pipe 14a for suctioning the cooling water circulated throughout the heat storage tank (2) as a whole is connected to the discharge port (18), on this discharge pipe (14a) As shown in the drawing, a plurality of suction holes 15a are formed to uniformly suck the cooling water in the heat storage tank 2 as a whole.

The heat storage chamber 4 is filled with a certain amount of cooling water, and a water supply unit 16 for replenishing the cooling water is formed at an upper end of one side of the heat storage tank 2, and the cooling water filled in the heat storage chamber 4 is filled with. The water level does not exceed the formation height of the water supply 16.

Further, a coolant outlet 18 for supplying coolant to the indoor unit 1 is formed at one lower end of the heat storage tank 2, and a separate connection pipe 3 is provided at the coolant inlet 17 and the coolant outlet 18. In combination, the coolant is circulated to the indoor unit 1 side.

The case 2a of the heat storage tank 2 is preferably formed to have a heat insulating structure to minimize the loss of heat.

On the other hand, the machine chamber 5 has a compressor 21 for circulating the cooling pipe 11 to pressurize the refrigerant converted into a low-temperature, low-pressure gas state to a high-temperature, high-pressure gas state, the outlet of the cooling pipe 11 It is connected to the side, the condenser coil 22 for converting the gas refrigerant of high temperature, high pressure into a medium temperature, high pressure liquid state is wired in a zigzag form at the outlet side of the compressor 21, An expansion valve 23 is formed at the end to convert the medium and high pressure liquid refrigerant into a low temperature and low pressure liquid refrigerant to supply the cooling pipe 11.

The outlet side of the expansion valve 23 is connected to the inlet side of the cooling pipe 11, the upper side of the machine chamber 5, the fan for promoting the heat generation operation of the refrigerant in the condensation coil 22 and the expansion valve (23) ( 24) is installed.

As described above, when the compressor 21, the condensing coil 22, the expansion valve 23, and the like are formed in the machine chamber 5 integrally formed in the heat storage tank 2, the heat storage tank 2 may be produced. In the production line, not only can the compressor 21 be sufficiently filled with a refrigerant of proper pressure, but also the work of connecting the cooling pipe 11, the compressor 21, and the expansion valve 23 as pipes at the air conditioner installation site. Since it is not necessary to reduce the work maneuver, and also as the circulation length of the refrigerant is shortened, the compression efficiency of the compressor 21 is improved, thereby improving energy consumption efficiency and cooling efficiency.

Referring to the operation of the present invention configured as described above is as follows.

When the compressor 21 installed in the machine room 5 is operated at midnight time, the gaseous refrigerant, which has been converted into a low-temperature and low-pressure state while passing through the cooling pipe 11, is pressurized by the compressor 21 and is heated. After being converted into a high-pressure gas refrigerant, the liquid is converted into a low-temperature, low-pressure liquid refrigerant while passing through the condensing coil 22 and the expansion valve 23 and supplied to the cooling pipe 11 inside the heat storage chamber 4.

The low-temperature and low-pressure liquid refrigerant circulating through the cooling pipe 11 vaporizes by absorbing the surrounding heat (heat of the cooling water filled in the heat storage chamber). As shown in the figure, ice is frozen outside the cooling pipe 11 to form a freezing body (R).

If the refrigerant continues to circulate through the cooling pipe 11 during the late night time, a freezing body R having a predetermined thickness is formed on the entire cooling pipe 11.

As the freezing body R is formed at the outer surface of the cooling pipe 11 as described above, the frozen freezing body R and the cooling water not yet frozen coexist in the heat storage chamber 4.

After that, when the time passes by the daytime, the indoor unit 1 operates.

When the indoor unit 1 is operated, a circulation pump (not shown) operates to pump the coolant inside the heat storage chamber 4, and by this pumping operation, the coolant is supplied to the indoor unit 1 through the connection pipe 3 and circulated. Done.

When the low temperature coolant is supplied to the indoor unit 1, the indoor unit 1 cools the hot air using the low temperature coolant to supply the indoor air, and the coolant absorbing the heat of air in the above process is again supplied to the coolant inlet 17. And supplied to the distribution pipe 14 through the distribution hole (15) to the heat storage chamber (4).

At this time, the cooling water at room temperature evenly supplied to the entire area of the heat storage chamber 4 through the distribution hole 15 is mixed with the cooling water in the cold state while primarily flowing in the upper portion partitioned by the upper plate 12. The coolant moves downward through the flow hole 12b, and moves to the lower side of the heat storage chamber 4 through the flow hole 13b of the lower plate 13 to spread evenly over the entire area.

As described above, as the cooling water at room temperature re-supplied to the heat storage chamber 4 is spread evenly as a whole, the freezing body R frozen at the outer shell of the cooling pipe 11 is melted at an equal speed, and thus the discharge pipe ( The temperature of the coolant which is uniformly sucked through the suction hole 15a of 14a) and resupplied to the indoor unit 1 through the coolant outlet 18 is always maintained, thereby increasing the cooling efficiency of the indoor unit 1. You can expect the effect.

As described above, the present invention forms a separate machine room inside the case of the heat storage tank, integrally forms equipment for compressing, condensing, and expanding the refrigerant inside the machine room, and stores the room temperature in the heat storage room by circulating the indoor unit. By supplying the cooling water to the inside of the heat storage chamber as a whole, it forms a means to melt the frozen material around the cooling pipe as a whole uniformly, so that the appropriate amount of refrigerant can be filled as it can be shipped from the production site The product can be shipped by filling, and the labor cost can be reduced by not having to connect the refrigerant supply side and the cooling pipe in the field, and the cooling efficiency is excellent as the frozen ice melted on the cooling pipe melts evenly as a whole. Hyosung provides an outdoor unit integrated heat storage air conditioner A can expect.

Claims (2)

An indoor unit 1 for cooling the air using the supplied cooling water and supplying the air to the room; Cooling pipe refrigerant 11 and the heat storage chamber 4 installed in a zigzag shape through a plurality of insertion holes 12a and 13a formed in the upper and lower plates 12 and 13 horizontally installed above and below the heat storage chamber 4. A distribution pipe 14 and a discharge pipe 14a connected to each of the cooling water inlet 17 and the cooling water discharge port 18 formed at the upper and lower sides of the cooling water are provided to accumulate a certain amount of ice in the middle of the night to accumulate cold air. A heat storage tank 2 circulating the cooling water generated while melting ice frozen in the indoor unit 1 so as to provide cooling; In the heat storage type cooling device comprising a compressor 21, a condensing coil 22, an expansion valve 23 arranged in series to compress, condense, and expand the refrigerant circulating in the cooling pipe (11). , While dividing the inside of the case (2a) of the heat storage tank (2), one side is formed of a heat storage chamber (4) in which the cooling pipe (11), the cooling water distribution pipe (14) and the discharge pipe (14a) are installed, The other side comprises a mechanical chamber 5 in which the compressor 21, the condensing coil 22, and the expansion valve 23 are installed, and the upper and lower plates 12 and 13 of the heat storage chamber 4 are coolant. The plurality of flow holes (12b, 13b) and the upper side of the machine room (5) for the uniform flow of the outdoor unit integrated heat storage cooling device characterized in that it further comprises a fan (24) for promoting the heat exchange operation of the refrigerant. The method of claim 1, The distribution hole (15) formed in the distribution pipe (14) is an outdoor unit integrated heat storage cooling device characterized in that formed on both sides of the distribution pipe (14) facing each other.