TWM637575U - Set-type ice-storage equipment - Google Patents

Abstract

A set-type ice-storage equipment is connected to an air-conditioning box of an air-conditioning equipment, the ice-storage equipment includes an ice-storage tank, a refrigeration system and a heat exchanger, and the refrigeration system includes a plurality of independently arranged copper pipes, a pair of collecting pipes and a refrigeration device. The ice-storage tank and the heat exchanger form an ice melting loop to melt the ice in the ice-storage tank, and the copper pipes, the collecting pipes and the refrigeration device form a refrigeration loop to make ice from the water in the ice-storage tank. In an ice-storage mode, the refrigeration device performs ice making operation on the water in the ice-storage tank through the refrigeration loop. In an ice melting mode, the water in the ice-storage tank passes through the ice melting loop to melt the ice in the ice-storage tank, so as to perform heat exchange through the heat exchanger and supplementary air conditioning for the air-conditioning equipment.

Description

Packaged ice storage equipment

The present invention relates to an ice storage device, especially a set type ice storage device.

Circular economy is an important solution to the practice of net zero emissions. The world will move towards net zero emissions, which requires fundamental changes in the way products are produced and used. According to the statistical analysis of office building energy checks, the main energy-consuming equipment accounts for 47.9% of the annual electricity consumption, air conditioning accounts for 47.9%, lighting accounts for 19.55%, business equipment accounts for 9.93%, air supply and exhaust equipment accounts for 4.27%, water supply and sewage equipment Accounted for 3.38%, elevator equipment accounted for 6.85%, refrigeration equipment accounted for 0.76%, and other equipment accounted for 7.35%. The annual power consumption of the air conditioning system is mainly based on the ice water host, followed by fans, pumps and cooling water towers. According to the energy-saving analysis of the air conditioner, it is most effective to reduce the impact of the peak load of the air conditioner by using a reasonable temperature control method and improving the operating efficiency COP of the chilled water host. According to the statistics of Taipower Corporation, domestic air conditioners account for about 30% of Xiayue’s peak electricity consumption, while ice water hosts account for about 50-60% of air conditioner electricity consumption. Therefore, in order to stably supply air conditioners during normal working hours, more peak power consumption and higher power contract capacity are required, resulting in additional power consumption and increased operating costs.

Therefore, how to design a packaged ice storage device to adjust the temperature in a specific space without using traditional air-conditioning equipment during the peak period of electricity consumption, so as to reduce power consumption and achieve energy-saving needs, is created for this case. A great topic of research.

In order to solve the above problems, the present invention provides a packaged ice storage device to overcome the problems of the prior art. Therefore, the ice storage equipment of the present invention is connected to the air-conditioning box of the air-conditioning equipment, and is supplemented by performing backup air-conditioning on the air-conditioning equipment to adjust the temperature of a specific space. The ice storage equipment includes an ice storage tank, a refrigeration system and a heat exchanger, and the refrigeration system includes a plurality of independently configured copper pipes, a pair of headers and a refrigeration device. The ice storage tank includes a water inlet and a water outlet, and the position of the water inlet and the water outlet in the ice storage tank is higher than the water outlet. One end of the heat exchanger is connected to the air conditioning box, and the other end is connected to the ice storage tank, so that the ice storage tank and the heat exchanger form an ice-melting circuit for melting ice in the ice storage tank. A plurality of independently configured copper tubes form a spiral pipeline from the water inlet to the water outlet, and these copper tubes are arranged in concentric circles. One of the collecting pipes is connected to the head ends of the copper pipes near the water inlet, and the other collecting pipe is connected to the tail ends of the copper pipes near the water outlet. The refrigerating device is connected with the pair of headers, so that the copper pipes, the pair of headers and the refrigerating device form a refrigerating circuit for making ice from the water in the ice storage tank. Among them, in the ice storage mode, the refrigeration device performs ice-making operation on the water in the ice storage tank through the refrigeration circuit, and in the ice-melting mode, the water in the ice storage tank performs the ice-melting operation on the ice in the ice storage tank through the ice-melting circuit, so that Heat exchange is carried out through heat exchangers and supplemented by backup air conditioning for air conditioning equipment.

The main purpose and effect of this new model is that during a specific period of time, the air conditioning system of this new type uses ice storage equipment to adjust the temperature in a specific space, and outside of a specific time period, the air conditioning system uses air conditioning equipment to adjust the temperature of a specific space. The temperature in the space is adjusted to prevent the power consumption of the air-conditioning system from exceeding the preset value of power consumption, which will cause users to pay extra electricity bills and fail to achieve the desired effect of energy saving.

In order to further understand the technology, means and effects of the new model to achieve the intended purpose, please refer to the following detailed description and accompanying drawings of the new model. It is believed that the purpose, characteristics and characteristics of the new model can be obtained from this. For specific understanding, however, the accompanying drawings are only for reference and description, and are not intended to limit the present invention.

100: Air conditioning system

200: air conditioning equipment

202: Air conditioner circuit

204: air conditioning box

300: ice storage equipment

1: ice storage tank

1A: water inlet

1B: water outlet

2: Refrigeration system

22, 22A~22F: copper tube

24A, 24B: headers

26: Refrigeration device

3: heat exchanger

3A: The first cold source end

3B: The first heat source end

3C: Second cold source terminal

3D: Second heat source end

4: The first circulation pump

5: The second circulation pump

6: Flowmeter

7: Temperature sensor

8: Liquid level window

A: specific space

Lr: refrigeration circuit

Lm: ice melting circuit

Tp: peak power consumption period

Cp: power consumption preset value

Figure 1 is a schematic diagram of the new air conditioning system; Figure 2A is a top view of the copper tube arrangement in the new ice storage tank; Figure 2B is the first cross-sectional view of the copper tube arrangement in the new ice storage tank; Figure 2C is the new ice storage tank The second cross-sectional view of the copper pipe arrangement in the ice tank; Figure 3 is a schematic diagram of the power consumption of the new air-conditioning equipment applied to a specific space; Figure 4A is a schematic diagram of the location of the new flowmeter; Figure 4B is the new temperature sensor Fig. 4C is a cross-sectional view of the configuration position of the temperature sensor of the present invention; Fig. 4D is a schematic diagram of the configuration position of the liquid level window of the present invention;

Hereby, the technical content and detailed description of this new model are explained as follows in conjunction with the drawings: Please refer to Fig. 1 for a schematic circuit diagram of the new air-conditioning system. The air conditioning system 100 includes an air conditioner 200 and a packaged ice storage device 300 (hereinafter referred to as the ice storage device 300). temperature adjustment. Specifically, the air-conditioning system 100 can perform the first air-conditioning mode in which the air-conditioning equipment 200 operates alone, the second air-conditioning mode in which the ice storage equipment 300 operates alone, and the third air-conditioning mode in which the two operate together, or the air-conditioning system 100 and The ice storage equipment 300 is a standby mode in which the temperature of the specific space A is not adjusted. Wherein, the ice storage device 300 is mainly used for the fluid after absorbing heat of the air conditioner 200 The medium is cooled to adjust or maintain the temperature of the specific space A by lowering the temperature of the fluid medium. The air conditioner 200 includes an air conditioner circuit 202 and an air conditioner box 204 , and the air conditioner circuit 202 is connected to the air conditioner box 204 so that the air conditioner box 204 can adjust the temperature of a specific space A through the control of the air conditioner circuit 202 .

The ice storage device 300 includes an ice storage tank 1 , a refrigeration system 2 and a heat exchanger 3 , and the refrigeration system 2 includes a copper pipe 22 , a pair of headers 24A, 24B and a refrigeration device 26 . The ice storage tank 1 includes a water inlet 1A and a water outlet 1B. The position of the water inlet 1A in the ice storage tank 1 is higher than that of the water outlet 1B, so that the water flow can smoothly flow from the water inlet 1A to the water outlet 1B. Among them, preferably, the position of the water inlet 1A can be as close as possible to the top of the ice storage tank 1, and the position of the water outlet 1B can be as close as possible to the bottom of the ice storage tank 1, that is, the two opposite positions of the ice storage tank 1 . The ice storage tank 1 is mainly used to store water/ice. When the ice making operation is performed, the ice storage device 300 will condense the water in the ice storage tank 1 into ice, and when the ice melting operation is performed, the ice storage device 300 will The ice in the ice storage tank 1 melts into water.

The refrigeration system 2 mainly provides the ice storage tank 1 for ice making operation, so as to condense the water in the ice storage tank 1 into ice. Specifically, the header 24A is connected to the head end of the copper pipe 22 near the water inlet 1A, and the header 24B is connected to the tail end of the copper pipe 22 near the water outlet 1B. The refrigerating device 26 is connected to the headers 24A, 24B, and the copper pipe 22, the headers 24A, 24B and the refrigerating device 26 form a refrigerating circuit Lr for making ice (that is, an ice making operation) from the water in the ice storage tank 1 . After the water in the ice storage tank 1 is condensed into ice, cold energy can be stored in advance, and when needed, it can be melted into water to release the stored cold energy. Wherein, the fluid medium circulating inside the pipeline of the refrigeration circuit Lr is a refrigerant, and the refrigeration system 2 mainly uses the refrigerant to make ice from the water in the ice storage tank 1 .

One end of the heat exchanger 3 is connected to the air conditioning box 204, and the other end is connected to the ice storage tank 1, so that the ice storage tank 1 and the heat exchanger 3 form an ice-melting circuit for melting the ice in the ice storage tank 1 (i.e., an ice-melting operation). Lm. After the ice in the ice storage tank 1 melts into ice water, it exchanges heat with the air conditioning box 204 through the heat exchanger 3, so that the air conditioning box 204 can use the cooling energy of the ice water to adjust the temperature in the specific space A. Specifically, the heat exchanger 3 includes a first cold source end 3A, a first heat source end 3B, a second cold source end 3C, and a second heat source end 3D. The first cold source end 3A is connected to one end of the air conditioning box 204 , and the first heat source end 3B is connected to the other end of the air conditioning box 204 to perform cold/heat exchange through circulation from the air conditioning box 204 to the heat exchanger 3 . The second cold source end 3C is connected to the water outlet 1B, and the second heat source end 3D is connected to the water inlet 1A. The ice water in the ice storage tank 1 is converted into hot water through the water outlet 1B, the second cold source end 3C, and the second heat source end 3D. The circulation of switch 3 performs cold/heat exchange.

Further, when the air conditioning system 100 operates in the first air conditioning mode or the standby mode, the ice storage device 300 may operate in the ice storage mode. The refrigeration device 26 can perform an ice-making operation on the water in the ice storage tank 1 through the refrigeration circuit Lr, so as to condense the water in the ice storage tank 1 into ice. When the air conditioning system 100 operates in the second air conditioning mode or the third air conditioning mode, the ice storage device 300 may operate in the ice melting mode. The water in the ice storage tank 1 can melt the ice in the ice storage tank 1 through the ice melting circuit Lm. The melted ice water is exchanged through the heat exchanger 3 so that the air-conditioning box 204 can use the cold energy of the ice water to adjust the temperature of the specific space A separately or supplementarily.

Referring back to FIG. 1 , the ice storage device 300 further includes a first circulation pump 4 and a second circulation pump 5 . The first circulation pump 4 is connected between the water outlet 1B and the second cold source end 3C, and the water in the ice storage tank 1 is pumped by the first circulation pump 4 to enter the heat exchanger 3 . The second circulating pump 5 is connected between the end of the first cold source 1A and the air-conditioning box 204 , and the fluid medium (such as but not limited to water or refrigerant) of the air-conditioning box 204 enters the heat exchanger 3 through the pumping of the second circulating pump 5 . Specifically, if the flow of the fluid does not have a pressure/conduction force in a specific direction, the flow force of the fluid is too low, resulting in a poor heat exchange effect. Therefore, through the first circulation pump 4 and the second circulation The ring pump 5 exerts pressure/conduction force in a specific direction (ie, the direction entering the heat exchanger 3 ), which can improve the effect of heat exchange and improve the efficiency of the ice storage device 300 .

Please refer to Figure 2A, which is a top view of the arrangement of copper tubes in the new ice storage tank, Figure 2B, the first cross-sectional view of the arrangement of copper tubes in the new ice storage tank, and Figure 2C, the arrangement of copper tubes in the new ice storage tank For the second sectional view, refer to Fig. 1 for compound fit. As shown in FIG. 2A , the ice storage tank 1 includes a plurality of independently configured copper tubes 22A-22F, and the copper tubes 22A-22F are clearly arranged in concentric circles from the top view. Use 3 copper tubes (diameter 0.95cm) and cross-sectional area (0.713cm ² ), and the thickness of the external ice is 1cm. As shown in FIG. 2B , the copper pipes 22A- 22F form a spiral pipeline from the water inlet 1A to the water outlet 1B. For the convenience of illustration, copper pipes 22D~22F are used for illustration. As shown in Figure 2B, it is a cross-sectional view of the ice storage tank 1 from the central position. It can be clearly seen that all the copper pipes 22A~22F are arranged in the direction from the water inlet 1A to the water outlet 1B, and are arranged in concentric circles from the outside to the inside. arranged in a manner. Referring to FIG. 2C , the copper tubes 22D-22F are arranged from high to low as 22F-22D, and the copper tubes 22A-22C are wrapped in the copper tube 22D. Therefore, all the copper pipes 22A-22F form a spiral pipeline from the water inlet 1A to the water outlet 1B. The collecting pipe 24A is connected to the head ends of the copper pipes 22A-22F near the water inlet 1A, and the collecting pipe 24B is connected to the tail ends of the copper pipes 22A-22F near the water outlet 1B. In this way, the pipeline pressure drops of all the copper tubes 22A-22F can be made equal. It is worth mentioning that in one embodiment of the present invention, the fluid medium inside the copper tubes 22A~22F is not limited to flow from the head end of the copper tubes 22A~22F to the tail end of the copper tubes 22A~22F, it can also be made of The tail ends of the copper pipes 22A~22F flow to the head ends of the copper pipes 22A~22F.

Specifications of the copper tube, the diameter of the tube is 24", the outer diameter is 600mm, the outer wall thickness is 9mm, the inner diameter is 581mm, and the height is 1m. The diameter of the copper tube used is 9.5mm, the spacing between the windings is 30mm (the thickness of the ice is 1cm), and the volume is 0.265m ^3. The copper tubes are divided into 6 loops in total and arranged in concentric circles. The diameter of the copper tube 22A loop (1) is d1, the diameter of the copper tube 22B loop (2) is d2, and the diameter of the copper tube 22C loop (3) is d3, copper tube 22D loop (four) diameter is d4, copper tube 22E loop (five) diameter is d5, copper tube 22F loop (six) diameter is d6, and the maximum number of groups that can be wound by loop (one) is used as the benchmark , and calculate the total length, so that all the windings are equal in length and the pressure drop in the pipeline is equal. The total cross-sectional area of the copper tube is A ₂ , the diameter of the copper tube d1 and the thickness of the ice storage X. Since the copper tubes 22A~22F are arranged in concentric circles, Therefore, the water in the ice storage tank 1 can be uniformly condensed into ice, and the ice in the ice storage tank 1 can also be uniformly melted into water, so that the ice storage tank 1 will not be damaged due to improper pipeline configuration. 1. There are some dead corners for condensation/melting ice inside. This model calculates the cooling capacity Qc according to the total length (L) _of the copper tubes of different copper tube designs. The summary area of the copper tubes used is shown in the following formula (1):

The summed ice volume V is shown in the following formula (2): X × A ₂ = V ... (2)

The stored cold energy is shown in formula (3):

Assuming that the number of turns of the winding is Y turns, the calculation method (4) of the total length of the copper tube is as follows: π× d ₁ × Y ×6= L ...(4)

Please refer to FIG. 3 , which is a schematic diagram of the power consumption of the new air conditioner applied in a specific space, and refer to FIGS. 1-2B for the combination. In FIG. 3 , the horizontal axis represents time (hours), and the vertical axis represents the power consumption of the air conditioner 200 . Wherein, FIG. 3 includes the power consumption peak time period Tp and the off-peak time period (that is, the time period other than the power consumption peak time period Tp). During the power consumption peak time period Tp, the power consumption of the air conditioner 200 exceeds the power consumption preset value Cp, which may cause the user to pay extra electricity bills and fail to achieve energy saving requirements. Therefore, the main purpose and effect of the present invention is that during the peak period of electricity consumption Tp, the air-conditioning system 100 of the present invention uses the ice storage device 300 to cool down the fluid medium after the heat absorption of the air-conditioning equipment 200, so as to carry out a special space A. The temperature adjustment in the interior, and during the off-peak period, the air conditioning system 100 uses the air conditioning equipment 200 For the specific space A, temperature adjustment in the space is performed. At the same time, during off-peak hours, the ice storage device 300 uses the margin between the power consumption of the air conditioner 200 and the power consumption preset value Cp to store ice in order to prevent the power consumption of the air conditioning system 100 from exceeding the power consumption. The preset value Cp causes the user to bear additional electricity charges, and cannot achieve the desired effect of energy saving.

That is to say, the ice storage device 300 of the present invention adopts a full ice storage system to transfer all peak air conditioning loads to off-peak hours. The ice storage device 300 does not make ice during peak air-conditioning hours, and all air-conditioning loads are supplied by the ice storage device 300 at this time. The feature of full ice storage operation is that it can greatly reduce the power load during peak hours. The purpose of this new development of ice storage equipment 300 is to store ice and store cold during off-peak hours of electricity at night, and re-melt ice during peak hours to supply cooling room demand, which will greatly reduce power consumption during peak hours and avoid continuous full load of ice water hosts, and Transferring the peak power consumption can reduce the application for power contract capacity.

Specifically, since the ice storage device 300 needs to replace the air conditioner 200 during the peak period of electricity consumption Tp, the freezing capacity of the ice storage device 300 must be supported as much as possible until the end of the peak period of electricity consumption Tp. Perform temperature adjustments in the space. Under this premise, the ice storage capacity of the ice storage tank 1 must be specially designed to meet the requirements of making the ice storage device 300 easy to miniaturize and configure. Therefore, in the present model, the ice storage capacity of the ice storage tank 1 is related to the peak power consumption period Tp, corresponding to the refrigeration capacity of the air conditioner 200, so as to just meet the air conditioning demand during the peak power consumption period Tp. Wherein, the calculation of the ice storage capacity of the ice storage tank 1 is shown in the following formula (5):

為n時段之流量(kg/s)，c _p 為儲冷液體之比熱(kJ/kg℃)，T _2n -T _1n 為n時段之溫差(℃)，Q _p 為因附屬組件(例如但不限於，空氣攪拌)之熱 量(kWhr)，Q _a 為與周遭環境之熱傳(kWhr)，△t為每次讀取數據支時間(秒)。淨釋冷量之計算如下式(6)所示：

in,

is the flow rate of n period (kg/s), c _p is the specific heat of the cold storage liquid (kJ/kg℃), T _{2 n} - T _{1 n} is the temperature difference in n period (℃), Q _p is due to the accessory components (such as But not limited to, the heat (kWhr) of air stirring), Q _a is the heat transfer with the surrounding environment (kWhr), Δt is the time (seconds) for each reading data. The calculation of the net cooling capacity is shown in the following formula (6):

The calculation of the average cooling release rate is shown in the following formula (7):

The calculation of the average cold storage rate is shown in the following formula (8):

Among them, in the above formulas (6)-(8), it is necessary to know the characteristics of the fluid medium of the ice-melting circuit Lm, and the fluid medium of the ice-melting circuit Lm is water, then the characteristics of the fluid medium can be known. Therefore, the refrigeration capacity can be obtained through the calculation of the above formulas (6)~(8), and the power consumption (air-conditioning equipment 200) of the power consumption peak period Tp in Figure 3 can be used to confirm whether the refrigeration capacity can support the power consumption peak period At the end of Tp.

Please refer to FIG. 4A which is a schematic diagram of the configuration position of the flowmeter of the present invention, and refer to FIGS. 1-3 for complex coordination. The ice storage device 300 further includes a flow meter 6 connected to the ice storage tank 1, and the flow meter 6 may be a float type flow meter. Wherein, the flow meter 6 is used to obtain the water level by detecting the change of the throttling area of the ice storage tank 1 during the ice melting operation. The principle of the flow meter 6 is to keep the pressure drop constant and use the change of the throttling area to measure the flow rate. It consists of a tapered tube that gradually expands from top to bottom and a rotor or float placed in the tapered tube. When the fluid flows through the conical tube, the float in the tube is pushed up to the height corresponding to the flow rate and floats. When the flow rate increases, the impulsive force acting on the float increases. Since the weight of the float in the fluid is constant, the float rises, and the ring gap between the corresponding rotor and the conical tube also increases, and the fluid flows through the ring gap. The velocity of the flow is reduced, and so is the momentum, allowing the float to balance in its new position.

Please refer to Figure 4B for a top view of the configuration position of the temperature sensor of the present invention, Figure 4C for a cross-sectional view of the configuration position of the temperature sensor of the present invention, please refer to Figure 4D for the configuration position of the liquid level window of the present invention For the schematic diagram, please refer to Figure 1~4A for complex coordination. In FIG. 4B , the ice storage device 300 further includes a plurality of temperature sensors 7 , and the temperature sensors 7 may be, for example but not limited to, K-type thermocouples. The temperature sensor 7 is arranged on the surface of the copper pipes 22A~22F in the ice storage tank 1, and the configurable positions include the center of the concentric circle and the four-way position of the concentric circle, and it is close to the surface of these copper pipes 22A~22F . Wherein, the temperature sensor 7 is used to sense the temperature of the ice storage tank 1 , so as to perform operations such as making ice, melting ice, and stopping operation of the ice storage device 300 by knowing the temperature of the ice storage tank 1 . In FIG. 4C , the temperature sensor 7 can be arranged at any height of the ice storage tank 1 from the water inlet 1A to the water outlet 1B. The more uniform the temperature sensors 7 are arranged, the more accurate the temperature sensing will be. In FIG. 4D , the ice storage device 300 further includes a liquid level window 8 , and the liquid level window 8 is formed on one side of the ice storage tank 1 . Wherein, the liquid level window 8 is used for the operator to intuitively know the liquid level in the ice storage tank 1 .

Please refer to Fig. 5 for the flow chart of the operation method of the new packaged ice storage device, and refer to Figs. 1 to 4C for complex cooperation. In step (S100), it is judged whether it is an off-peak period. If it is not an off-peak period, it means that it is in a power consumption peak period Tp. Therefore, the air-conditioning system 100 activates the ice storage device 300 to enter the ice melting mode (S120), so that the water in the ice storage tank 1 can melt the ice in the ice storage tank 1 through the ice melting circuit Lm, and the ice storage device 300 detects the ice at the same time. Measure the temperature of the ice storage tank (can pass through the temperature sensor 7). Then, it is judged whether the temperature has reached the upper limit value (S140). When the temperature does not reach the upper limit, it means that the ice storage device 300 still has cold energy available, so it can return to step ( S120 ) to continue the ice-melting mode until entering the off-peak period. When the temperature reaches the upper limit and the peak period of power consumption Tp has not yet ended, it means that the remaining cold energy of the ice storage device 300 cannot be maintained. Therefore, the air-conditioning mode of the air-conditioning device 200 is put into operation so that the air-conditioning mode and the ice-melting mode work together ( S160), until entering the off-peak period, and after entering the off-peak period, return to step (S100).

After entering the step (S120), it is optional to detect the return water temperature of the water entering the ice storage tank 1 from the ice-melting circuit Lm, and determine whether the return water temperature reaches the lower limit value or the upper limit value of the water temperature (S200)~(S220). When it is judged that the return water temperature reaches the lower water temperature limit, it means that the water temperature in the copper pipe 22 is too low, so the operating frequency of the first circulation pump 4 can be reduced (S240) to reduce the water circulation speed of the ice-melting circuit Lm. In this way, the power loss of the first circulation pump 4 can be reduced, and additional cooling energy loss can be avoided at the same time. Conversely, when it is judged that the return water temperature reaches the water temperature upper limit, it means that the water temperature in the copper pipe 22 is too high, so the operating frequency of the first circulation pump 4 can be increased (S260) to increase the water circulation speed of the ice-melting circuit Lm . In this way, the heat exchange rate of the ice-melting circuit Lm can be increased. On the other hand, when it is determined that the return water temperature is between the water temperature lower limit and the water temperature upper limit, it represents that the water temperature in the copper tube 22 maintains a good application rate, so the operating frequency of the first circulation pump 4 can be maintained (S280 ) to maintain the water circulation rate.

When the judgment of step ( S100 ) is yes, it means that it is in the off-peak period. The air conditioning system 100 can control the ice storage device 300 to perform the ice storage mode or stop operation according to the actual condition of the ice storage tank 1 . Specifically, when the determination in step (S100) is yes, the ice storage device 300 may determine the water level of the ice storage tank 1 through the flow meter 6 (S300). When the water level is not lower than the lower limit of the water level, it means that the stored cold energy is insufficient, so the air conditioning system 100 controls the ice storage device 300 to enter the ice storage mode (S320). At this time, the ice storage device 300 controls the refrigeration device 26 to make ice from the water in the ice storage tank 1 through the refrigeration circuit Lr, and returns to step (S300) to continuously determine the water level. Conversely, when the water level is lower than the lower limit of the water level, it means that the stored cold energy is sufficient, and the remaining water is used as a fluid medium in the ice melting operation, which is not suitable for ice making. Therefore, when the water level is lower than the water level lower limit, stop the ice storage mode ( S340 ), and return to step ( S100 ) to continue judging the period. Wherein, when the ice storage mode is stopped, the ice storage device 300 may stop operating (that is, stop all components operating) to save power consumption. Alternatively, the ice storage device 300 can be in the standby mode to detect whether the water level of the ice storage tank 1 has naturally melted to a state where the water level is too high during the subsequent period of stopping the ice storage mode, so as to facilitate restarting and enter the ice storage mode .

Therefore, in summary, due to the design of the concentric copper tube 22 in the packaged ice storage device 300 developed by the present invention, the ice storage tank 1 is designed based on the freezing capacity during the peak period of electricity consumption, and the ice storage tank 1 is designed based on the ice melting circuit Lm Therefore, the power consumption of the ice storage device 300 can be as low as 25kW, and the freezing capacity can be maintained at 64500kcal/hr, and the ice storage capacity can reach about 1000kg per bucket. In addition, due to the miniaturization design of the ice storage tank 1, the size of the ice storage tank 1 can be limited to about 1.56m in diameter and 1.8m in height. Due to the miniaturized design of the ice storage equipment 300, it will save the cost of high engineering costs and monitoring system costs in the past, and effectively reduce the failure rate and initial cost. What's more, the ice storage device 300 can save more engineering costs in the past, is simple and convenient to operate, saves energy and reduces carbon, retains the value of products and materials as much as possible, and uses resources in a way of recycling, manufacturing and use.

In order to make the air-conditioning system 100 applied to buildings to meet the requirements of saving electricity and energy and meeting the air-conditioning load, this new model develops a reliable, easy-to-operate and easy-to-control ice storage device 300 to increase the use efficiency of the air-conditioning system 100 and reduce peak air-conditioning costs. electrical load. In addition, according to Taipower's demand bidding measures (this measure refers to the high-load period of the system), Taipower bids with Taipower by reducing the contracted capacity, allowing users to sell the saved electricity back to Taipower, and users bid for bidding. Taipower adopts The bidder with the lowest bid wins the bid first. If the bidder does reduce electricity consumption during the electricity consumption reduction period, he can get the electricity fee deduction. The use of the air conditioning system 100 of the present invention can give users more autonomy through the user-reported demand response method, stimulate the potential for reducing power consumption, and improve the system load pattern, thereby delaying the development of new power sources or reducing the possibility Risk of curtailment.

However, the above is only a detailed description and drawings of preferred embodiments of the new model, but the features of the new model are not limited to this, and are not used to limit the new model. All scope of the new model should be applied for as follows The scope of the patent shall prevail, and the implementation of the spirit of the scope of the patent for this new model and its similar changes For example, all should be included in the scope of the present invention, and any changes or modifications that can be easily conceived by anyone familiar with the art in the field of the present invention can be covered by the following patent scope of this case.

100: Air conditioning system

200: air conditioning equipment

202: Air conditioner circuit

204: air conditioning box

300: ice storage equipment

1: ice storage tank

1A: water inlet

1B: water outlet

2: Refrigeration system

22: Copper pipe

24A, 24B: headers

26: Refrigeration device

3: heat exchanger

3A: The first cold source end

3B: The first heat source end

3C: Second cold source terminal

3D: Second heat source end

4: The first circulating pump

5: The second circulation pump

A: specific space

Lr: refrigeration circuit

Lm: ice melting circuit

Claims (7)

A packaged ice storage device, which is connected to an air conditioning box of an air conditioner, and is supplemented with a backup air conditioner for the air conditioner to adjust the temperature of a specific space. The ice storage device includes: an ice storage tank, including an A water inlet and a water outlet, and the water inlet is higher than the water outlet at a position of the ice storage tank; a refrigeration system includes: a plurality of independently configured copper pipes, and the copper pipes are connected from the water inlet to the outlet A spiral pipeline is formed in the direction of the water inlet, and the copper pipes are arranged in a concentric circle; a pair of collecting pipes, one of which is connected to the head end of the copper pipes close to the water inlet, and the other collecting The flow pipe is connected to the tail ends of the copper pipes close to the water outlet; and a refrigeration device is connected to the pair of headers, so that the copper pipes, the pair of headers and the refrigeration device form the ice storage tank A refrigeration circuit for making ice from water; and a heat exchanger, one end of which is connected to the air conditioning box, and the other end is connected to the ice storage tank, so that the ice storage tank and the heat exchanger form the ice storage tank to melt the ice An ice-melting circuit for ice; wherein, in an ice storage mode, the refrigeration device performs an ice-making operation on the water in the ice storage tank through the refrigeration circuit, and in an ice-melting mode, the water in the ice storage tank passes through the The ice-melting circuit performs an ice-melting operation on the ice in the ice storage tank, so as to perform a heat exchange through the heat exchanger and supplement the air-conditioning equipment for backup air-conditioning. The ice storage device as described in claim 1, wherein the heat exchanger includes: a first cold source end connected to one end of the air-conditioning box; a first heat source end connected to the other end of the air-conditioning box; a second cold source end, connected to the water outlet; and a second heat source end, connected to the water inlet; Wherein, the water in the ice storage tank passes through the water outlet, the second cold source end, the second heat source end and the water inlet to perform the ice melting operation. The ice storage device as described in claim 2 further includes: a first circulating pump connected between the water outlet and the second cold source end; and a second circulating pump connected between the first cold source end and the Between the air-conditioning box; wherein, the water system of the ice storage tank enters the heat exchanger through the pumping of the first circulation pump, and a fluid medium of the air-conditioning box enters the heat exchanger through the pumping of the second circulation pump heat exchanger. The ice storage device as claimed in claim 1, wherein the refrigeration system uses a refrigerant to perform the ice making operation on the water in the ice storage tank. The ice storage device as described in Claim 1, wherein an ice storage capacity of the ice storage tank is related to a freezing capacity during a power consumption peak period, so as to just meet the air-conditioning demand during the power consumption peak period. The ice storage device as described in claim 1 further includes: a flow meter connected to the ice storage tank; a plurality of temperature sensors arranged at a center of the concentric circle and a four-way position of the concentric circle, and closely connected Affixed to the surface of the copper pipes; wherein, the flowmeter is used to detect a water level of the ice storage tank during the ice melting operation, and the temperature sensors are used to sense a temperature of the ice storage tank . As for the ice storage device described in claim 1, the ice storage tank further includes: a liquid level window formed on one side of the ice storage tank; wherein, the liquid level window is used for visually knowing the amount of water in the ice storage tank Liquid level height.

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