KR101038558B1 - Heating and cooling apparatus using heat pump and micro bubbles - Google Patents

Abstract

PURPOSE: An air-conditioning and heating device for a fish farm is provided to enhance heat exchange efficiency of a heat pump using microbubble and to maximize foreign material removal efficiency. CONSTITUTION: An air-conditioning and heating device for a fish farm comprises: a raw water supply pipe(11) supplying raw water to water tanks; a water discharge pipe(12) discharging polluted water from the water tanks; and a return pipe(13) interlinking the raw water supply pipe and water discharge pipe. Valves(14,15) are respectively installed in the raw water supply pipe and water discharge pipe. Between the raw water and discharged water, a heat pump for exchanging heat and a bubble generation unit are equipped.

Description

Farming and heating equipment using heat pumps and micro bubbles {heating and cooling apparatus using heat pump and micro bubbles}

The present invention relates to a cooling and heating device of aquaculture farms, and more particularly, to a heat pump using nanobubbles or micro bubbles to improve heat exchange efficiency and to increase foreign material removal efficiency. It relates to a cooling and heating device of aquaculture farm using micro bubbles.

The aquaculture industry has grown into an important food industry, accounting for 33.3% of the domestic fisheries output, but recently, the domestic aquaculture industry has been weakening every year due to internal and external factors due to the increase in low-cost imported live fish and the increase in the paying cost.

The problem of farms is the increase of production cost by using boiler and alternative energy of oil, low growth and death of farmed fish by low water temperature, death of farmed fish by breeding microorganism at high water temperature, death of farmed fish by red tide microorganism, summer season The death of aquaculture fish by cold water zone is mentioned.

Most of these items are closely related to the water temperature of the farms, so the temperature control system of the farms is very important.

In particular, the water temperature of the farms not only has a great influence on the growth and survival of fish, which is a warm-blooded animal, but also is an important factor that causes water quality changes such as oxygen dissolved. Since aquaculture is an economic activity that raises maximum production under optimal conditions, it is very important to maintain an optimal breeding temperature and an optimum breeding temperature for aquaculture. In the case of Korea, the high temperature of about 28 degrees Celsius lasts in summer, which is a significant limiting factor for the growth and survival of the flounder, jeopbolak, and perch, which are currently mainly farmed, and this phenomenon will intensify due to global warming. It is expected. In addition, winter water temperature not only acts as a deterrent to temperate fish, but also acts as a limiting factor for overwintering, which makes it difficult to diversify fish species. There are many fish species that can overwinter in some sea areas in the south coast, but most fish species are difficult to grow year round because they require winter temperatures above 10 degrees Celsius.

Currently, the temperature control of the land tank farm is to increase the water temperature by using a direct boiler in the winter, liquid nitrogen, ice and ground water in the summer. For example, existing flounder farming fish tanks raise the water temperature of 7 degrees Celsius in winter to 21 degrees Celsius and supply it to fish tanks. In such an oil-based fish farming system, a large amount of seawater consumption is necessary to artificially form natural environmental conditions. Therefore, fuel costs of oil-fired boilers, which account for about 30-40% of the operating costs of fish farms, have become a major cause of the rising cost of fish farming along with the recent high labor costs.

Heated heat pump system of energy-saving land tank fish farm that can recover waste heat with low temperature difference (about 10-15 degrees Celsius) with high efficiency without any discharge of seawater heated to a certain temperature from existing fish farm system. Development is urgently needed.

In view of these problems, Korean Utility Model Registration No. 422,672 discloses a heat recovery heating device for a fish tank using a heat pump, and Patent Registration No. 954,234 discloses a heat pump heating device for a fishery nursery using sea water. Utility model registration No. 351,554 discloses a heating device using a heat pump, a circulation pipe, and a plate heat exchanger, and utility model registration No. 361,614 discloses an underwater supply and warm water recovery device for aquaculture / fish farms.

As described above, the cold, heating and waste heat recovery apparatus using the heat pump has a structure in which heat exchange between the heat exchange medium and the sea water circulates in the heat pump and thus cannot maximize heat exchange efficiency. In particular, since the heat exchange medium circulating in the heat pump has a structure in which seawater is heat-exchanged, foreign matters (scale) included in the seawater are attached to the conduit, thereby degrading heat exchange efficiency.

The present invention is to solve the problems described above, it is possible to improve the heat exchange efficiency, the foreign matter is attached to the pipe line can prevent the thermal efficiency is lowered, the heat pump and the micro separation of the foreign matter from the surface of the pipe line The purpose is to provide a farm heating and cooling device using a bubble.

Another object of the present invention is nanobubbles or Microbubble enables continuous supply of oxygen to fish farms or aquaculture farms, and heat pumps that maximize water purification effects by allowing foreign substances on the bottom surface to float and be removed. It is to provide a farm heating and cooling device using a micro bubble.

Still another object of the present invention is to provide a heat pump capable of maximizing the manure effect of foreign substances by pressing and relaxing the fibrous unit in pieces. It is to provide a farm heating and cooling device using a micro bubble.

In order to achieve the above object and the heat pump according to the present invention The micro-bubble farm heating and cooling device includes a raw water supply pipe for supplying raw water to the fish farm, a discharge pipe for discharging contaminated water from the farm, and a return pipe connecting the raw water supply pipe and the discharge pipe,

Nanobubble to the heat pump for exchanging heat between the feed water and the discharge water discharged through the raw water supply pipe and the discharge pipe, and the water supplied through the raw water supply pipe or the water circulated through the return pipe It is characterized in that it is provided with a bubble generating unit for supplying micro bubbles, and a pressure gravity filter unit installed in the return pipe or raw water supply pipe to filter foreign matter.

In the present invention, the heat pump includes a first heat exchanger having a first chamber installed in the discharge pipe and installed in the first chamber, and a second heat exchanger having a second chamber installed in the raw water supply pipe and installed in the second chamber. And an expansion valve connected to the first and second heat exchangers to form a closed circuit, an expansion valve and a compressor installed in the circulation pipe, and an expansion valve installed in the circulation pipe and serving as a first heat exchanger or a second heat exchanger. It is provided with a four-way valve to achieve a cycle while circulating in the forward and reverse direction.

The micro bubble generating unit is installed in the raw water supply pipe between the return pipe and the second chamber is connected to the suction port side of the pump, the air compressor is connected to the air supply pipe, the vortex generation is installed on the outlet side of the pump A part is provided.

The micro bubble generating unit includes a vortex generating unit installed in the raw water supply pipe between the return pipe and the second chamber, a supply pipe supplying air or oxygen to the vortex generating unit, and an air compressor or oxygen tank connected to the supply pipe. do.

The pressurized gravity filter installed in the return pipe includes a filter housing having a cylinder part therein, a lower perforated plate member installed at a lower part of the cylinder part of the filter housing, and fibers having a unit length and positioned in the cylinder part. A filter that expands to increase the voids between fibers when the pressure is relatively uncompressed, a piston slidably installed on an upper portion of the cylinder portion, a piston made of a porous plate, an actuator installed on the filter housing, and an elevating piston, and the filter housing And a filter backwashing means for washing the filter when the filter is not pressurized by the piston.

Aquaculture plant heating and heating device using the heat pump and the micro-bubble of the present invention can recover the waste heat from the wastewater discharged from the fish farm to heat the raw water can reduce the heating cost of the farm. In addition, the heater pump of the farm can be used to control the temperature of the raw water supplied to the farm.

In addition, since the raw water supplied to the farm can be supplied through microbubbles, the amount of dissolved oxygen can be increased in the water in the farm, and the microbubble can destroy the cells of the bacteria and can be expected to have a bactericidal effect. It is also possible to remove NO3 and NO2 components, which are ammoniacal substances, which are fish waste.

In addition, it is possible to prevent foreign matter from adhering to the surface of the raw water supply pipe, the discharge pipe, the return pipe, and the first and second heat exchangers installed in the first and second chambers.

1 is a heat pump according to the present invention and A circuit diagram showing an aquaculture farm heating and cooling device using a micro bubble,
2 is Figure showing a micro bubble generating unit.
3 is a circuit diagram showing the pressure gravity filter shown in FIG.
Figure 4 is a circuit diagram showing another embodiment of the gravity pressure filter according to the present invention.

With the heat pump according to the invention Aquaculture plant cooling and heating system using micro bubble recovers waste heat by heat-exchanging raw water and effluent in the aquarium of fish farm, In order to prevent foreign matter from adhering to the circuit by supplying micro bubbles, one embodiment is shown in FIGS. 1 to 3.

Referring to the drawings, the farm heating and cooling device 10 using the heat pump and the micro-bubble according to the present invention is contaminated from the raw water supply pipe 11 for supplying raw water to the farm water tanks 100, and the farm water tanks 100 And a return pipe 13 for connecting the raw water supply pipe 11 and the discharge pipe 12 to discharge the discharged water. Valves 14 and 15 are installed in the raw water supply pipe 11 and the discharge pipe 12.

 In addition, a heat pump 20 is installed to exchange heat between the feed water supplied through the raw water supply pipe 11 and the discharge water discharged through the discharge pipe 12, and is introduced through the raw water supply pipe 11. A bubble generating unit 30 for supplying nanobubbles or microbubbles to raw water, which is a supply water, or water circulating through the return pipe, is installed, and a pressurized gravity filter for filtering foreign matters in the return pipe or raw water supply pipe 11. The unit 50 is installed.

The heat pump according to the present invention configured as described above and The farm-based cooling and heating system using micro bubbles will be described in more detail by component.

The heat pump 20 heat-exchanges the water discharged through the discharge pipe 12 and the water for aquaculture supplied through the raw water supply pipe 11, and heats and cools the water supplied to the aquaculture tank 100. The first chamber 21 is installed in the discharge pipe 12, the first heat exchanger 22 is installed inside the first chamber 21, and the second water supply pipe 11 is provided in the second chamber 21. The chamber 23 is installed, and the second heat exchanger 24 is installed therein. The first and second heat exchangers 22 and 24 are connected by a circulation tube 25 constituting a closed circuit. The circulation pipe (25) is installed in the expansion valve (26), the compressor (27) and the circulation pipe (25) and through the first heat exchanger (22) or the second heat exchanger (24) and the expansion valve (26). The four-way valve 28 for circulating in the forward or reverse direction to achieve one cycle is provided.

remind The microbubble generating unit 30 is connected to the water circulated through the raw water or aquaculture tank 100 and the raw water supply pipe 11, the return pipe 13, and the discharge pipe 12 which are supplied to the aquaculture farm. An air supply pipe 31 for supplying micro bubbles, and connected to the raw water supply pipe 11 on the side adjacent to the suction side of the pump 61 installed in the raw water supply pipe 11, and the air supply pipe 31 and An air compressor 32 is connected. The air supply pipe 31 may be provided with a valve for controlling the supply of air. The air supply pipe 31 may be connected to the oxygen tank.

2 Another embodiment of the micro bubble generating unit 30 is shown. this The microbubble generating unit 30 is connected by the vortex generating unit 35 installed at the inlet side of the second chamber 23 and the vortex generating unit 35 and the supply pipe 36 to supply air or oxygen. An oxygen tank 37 or an air compressor 38 is provided. The vortex generator 35 has a tubular tube 35a and a diaphragm 35b installed inside the tube 35a to generate vortices. The diaphragm may be installed spirally.

remind The microbubble generating unit is not limited to the above-described embodiment, and may be a structure capable of atomizing air or oxygen. For example, a microbubble may be formed by supplying water containing oxygen or air to each other by relatively rotating the stator having the unevenness formed on the inner circumferential surface and the rotor having the unevenness corresponding to the unevenness.

The pressurized gravity filter 50 is floated by a microbubble from the bottom of the tank or foreign matter from the circulating water, which is the water circulating in the raw water supply pipe 11 and return pipe 13, the discharge pipe 12 and the fish farm tank 100. In order to filter out one fish dropping and foreign body, an example is shown in FIG.

Referring to the drawings, the pressure gravity filter 50 is installed in the return pipe 13, the filter housing 51 having a cylinder portion 52 therein, and the cylinder portion 52 of the filter housing 51. A filter 55 which is formed of a lower porous plate member 53 installed at a lower portion thereof, and a fiber having a unit length and positioned in the cylinder portion 52, and expands so as to have a large gap between the fibers when the pressure is relatively low. And a piston 56 slidably installed on the upper portion of the cylinder part 52 and an actuator 57 installed on the filter housing and lifting the piston. The actuator 57 may be formed of a cylinder, but is not limited thereto. The actuator 57 may include an electric cylinder, a lead screw, and a motor.

The upper chamber 51a of the filter housing 51 partitioned by the piston 56 and the lower porous plate member 53 is connected to the discharge pipe 12 to the first return pipe 13a and the lower chamber 51b. ) Is connected to the circulation pipe by the second return pipe 13b. Valves are provided in the first and second return pipes 13a and 13b.

 The pressurized gravity filter unit 50 further includes a filter backwashing means 70 for backwashing the filter 55, and the filter backwashing means 70 connects the water tank 71 and the lower chamber 51b. A washing water supply pipe (72) and a pump (73) installed in the washing water supply pipe (72), and the filter housing (51) is connected to the upper chamber (51a) and discharge pipe (74) for discharging the filter washing water. This is installed. The discharge pipe 74 is provided with a valve.

On the other hand, the pressurized gravity filter unit 50 is installed in parallel as shown in Figure 4 while the other pressurized gravity filter unit filter backwashing means 70 while filtering the circulating water or raw water by one pressurized gravity filter unit It can be implemented so that the filter can be washed by).

The heat pump according to the present invention configured as described above and The operation of the plant cooling, heating and water purification equipment using micro bubbles is as follows.

First, in order to recover waste heat from the water discarded from the fish farm 100 and heat the water supplied to the fish farm, the first valve 21 installed inside the first chamber 21 by operating the four-way valve 28 of the heat pump. The heat exchanger 22 is used as an evaporator, and the second heat exchanger 24 installed in the second chamber 23 is used as a condenser. Therefore, the refrigerant circulating in the heat pump is circulated from the compressor to the four-way valve to the second heat exchanger to the expansion valve to the first heat exchanger to the four-way valve to the compressor. In this process, the first heat exchanger 22 absorbs heat from the water that is discarded or circulated through the return pipe, and releases the heat corresponding to the amount of heat and the amount of the compressor 27 from the second heat exchanger 24. The water supplied or circulated through the raw water supply pipe is heated.

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Remind you in this process Bubbles are carried on the water supplied to the water tank by the micro bubble generating unit 30. remind The generation of micro bubbles by the micro bubble generating unit 30 is such that when the oxygen supplied from the air compressor 32 air or the oxygen tank is supplied to the raw water supply pipe 11 through the air supply pipe 31, the air or oxygen is It is pulverized while passing through the impeller of the pump 61. In particular, as shown in FIG. 2, the air or oxygen supplied to the vortex generating unit 35 is pulverized and atomized while vortices are generated by the diaphragm in the vortex generating unit.

Oxidized oxygen or air as described above is supplied to the water tank through the second chamber 23 of the raw water supply pipe 11 by piggybacking on the water. In this process, the water supplied to the aquaculture tank becomes relatively high in dissolved oxygen by microbubbles.

In addition, the bicrobubble can separate the foreign material attached to the surface of the tube and the heat exchanger in the process of piggybacking on the water and can be sterilized. That is, nanobubbles or The micro bubble is a hot spot phenomenon that occurs when the micro-bubble burst damages the bacterial cells, it is possible to prevent the scale from being caught in the pipeline by floating like foreign matter attached to the surface of the pipeline. In particular, the sediment of sediment fish attached to the bottom of the tank is floated and removed and filtered by a pressure gravity filter.

On the other hand, since the water supplied to the aquaculture tank includes nanobubbles or microbubbles, heat exchange efficiency with the first and second heat exchangers 22 and 24 may be improved. According to the experiments of the present inventors, the heat transfer ratio according to the mixing of the microbubbles has a maximum value at the time of the volumetric concentration of the microbubbles 3%, it can be seen that as the volumetric concentration increases. When the volume concentration was 3%, the heat transfer coefficient increased by 35%, and the efficiency of the heat pump was found to increase by 35%.

And if the supply of raw water to the yangjang tank is sufficient, the water is circulated to the fish tank and the discharge pipe (12) and return pipe (13), pressurized gravity filter (50), raw water supply pipe (11), fish farm. In the process of nanobubbles or Foreign matter which has floated from the aquaculture tank by the microbubble and the foreign substance separated from the inner surface of the tube and the first and second heat exchangers 22 and 24 can be filtered out.

Separation of foreign substances by the pressurized gravity filter unit 50, the water of the fish farm tank flows into the upper chamber 51a of the filter housing 51 through the discharge pipe 12 and the first return pipe 13a, this inflow The foreign water is removed while passing through the filter 55, and is supplied to the water tank through the lower chamber 51b, the second return pipe 13b, and the raw water supply pipe. In this process, the filter unit can remove up to 점 (clay, silt) component by the filter pressurized by the piston 25 can supply 0.3 to 0.5NTU of clear water to the tank.

If the filter is contaminated by the circulation of water as described above, the filter 55 can be washed by the filter backwashing means 70. The cleaning of the filter 55 blocks the first and second return pipes 13a and 13b by using a valve, and the lower chamber through the pump 73 and the washing water supply pipe 72 of the filter backwashing means 70. While supplying water to 51b, the piston 56 is raised using the actuator 57. In this case, the filter made of the fiber having the unit length has a relatively large gap therebetween, and the foreign matter attached thereto is washed by the washing water. The washing water is discharged through the upper chamber 51a and the discharge pipe 74.

When the cleaning is completed as described above, the piston 56 is lowered by the actuator 57 to pressurize the filter 55, thereby reducing the gap between the fibers.

As described above, the filter for filtering foreign matter from water does not need to be replaced and can be repeatedly recycled, and it can be pressurized by a piston to reduce the supply, thereby eliminating turbidity of the seawater and NO3, NO2, which is an ammonia substance of fish. Removal of components is also possible.

As described above, the present invention can increase the dissolved oxygen amount by boosting the microbubbles in the water discharged from the aquaculture tank, and can increase the thermal bridge efficiency by the heat pump. In particular, the pressurized gravity filter can be used to purify the water quality.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

With the heat pump of the present invention Micro-bubble farm heating and cooling system is widely applicable to not only farm farms, but also various boiler facility cultivation complexes and hydroponic cultivation fields.

20; Heat pump
30; Bubble Generation Unit
50; gravity filter
70; Filter backwashing means

Claims (6)

A raw water supply pipe for supplying raw water to the fish farm, a discharge pipe for discharging contaminated water from the fish farm, and a return pipe connecting the raw water supply pipe and the discharge pipe,
Nanobubble to a heat pump for exchanging heat between the raw water and the discharged water discharged through the raw water supply pipe and the discharge pipe, and the raw water flowing through the raw water supply pipe or the water circulated through the return pipe An aquaculture plant heating and heating device using a microbubble and a heat pump, characterized in that the bubble generating unit for supplying microbubbles. The method of claim 1,
The heat pump includes a first heat exchanger installed in the first chamber installed in the discharge pipe, a second heat exchanger installed in the second chamber installed in the raw water supply pipe, and the first and second heat exchangers to form a closed circuit. A circulating pipe, an expansion valve and a compressor installed in the circulation pipe, and a four-way valve installed in the circulation pipe so as to be circulated in a forward and reverse direction through an expansion valve toward the first heat exchanger or the second heat exchanger. Aquaculture plant heating and heating device using a heat pump and micro bubbles characterized in that it comprises a. The method of claim 1,
The microbubble supply means is installed in the raw water supply pipe between the return pipe and the second chamber, the air supply pipe connected to the inlet side of the pump, the air compressor connected to the air supply pipe, and the vortex generation installed on the outlet side of the pump. Aquaculture plant heating and heating device using a heat pump and micro-bubble characterized in that it is provided. The method of claim 1,
The microbubble supply means includes a vortex generating unit installed in the raw water supply pipe between the return pipe and the second chamber, a supply pipe supplying air or oxygen to the vortex generating unit, and an air compressor or oxygen tank connected to the supply pipe. Aquaculture plant heating and heating device using a heat pump and micro bubbles characterized in that. The method of claim 1,
Installed in the return pipe or raw water supply pipe further comprises a pressurized gravity filter for filtering foreign matter,
The pressurized gravity filter may include a pressurized gravity filter installed in the return pipe, a filter housing having a cylinder portion therein, a lower porous plate member installed below the cylinder portion of the filter housing, and a unit length and having a unit length. The filter is made of fibers and expands to increase the voids between the fibers when the pressure is relatively uncompressed, a piston slidably installed on the upper portion of the cylinder portion, a piston made of a porous plate, and an actuator installed on the filter housing to lift the piston And a filter backwashing means connected to the filter housing and washing the filter when the filter is not pressurized by the piston. 6. The method of claim 5,
The filter backwashing means includes a washing water supply pipe connecting the water tank and the lower chamber, and a pump installed in the washing water supply pipe, and a discharge pipe connected to the upper chamber in the filter housing for discharging the filter washing water. Farm air conditioning system using heat pump and microbubbles.

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