Air conditioning system based on chilled water storage

Abstract

The utility model relates to the technical field of refrigeration equipment, and provides an air conditioning system based on chilled water storage, which comprises a refrigeration module, a water storage module and a control module, the cold accumulation module is connected with the refrigeration module and has a cold accumulation state and a cold discharge state; in the cold accumulation state, the cold accumulation module accumulates cold through first electric energy; wherein the electricity price of the first electric energy is lower than the electricity price of the mains supply electric energy in the required time period; and in the cold releasing state, the cold storage module releases cold to the user side in the required time period. According to the air conditioning system based on chilled water storage, cold storage can be carried out in the low-ebb electricity price period, the electric charge expenditure can be reduced, meanwhile, the power grid load is balanced, and the electric power use efficiency is improved; or solar energy is used for cold storage, dependence on traditional energy can be reduced, greenhouse gas emission is reduced, and environmental protection benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field especially, relate to a kind of air conditioning system based on water cold storage. BACKGROUND

[0002] Air conditioning system is a kind of equipment system for adjusting indoor temperature, humidity, air velocity and air quality, can control the environmental parameter in indoor in the comfortable range required by people.

[0003] In prior art, air conditioning system, usually in required time period directly through mains for air conditioning ice water system operation, refrigeration host 10 will water refrigeration, through cooling pump 20 after water pumping to cooling tower 30 and exchanges heat, cold water enters water distributor 40, for user end use, used backwater is through freezing pump 50 into refrigeration host 10 again through water collector 60, forms a cycle.

[0004] However, in the above process, the electricity of refrigeration host 10 and cooling tower 30 is mostly used in peak electricity, not only increases the power load of power grid, but also generates higher electricity cost. INVENTION CONTENTS

[0005] The utility model provides a kind of air conditioning system based on water cold storage to solve the defect of high electricity cost in prior art air conditioning system, realize using low valley electricity or photovoltaic electricity as air conditioning ice water cold storage, reduce use cost.

[0006] The utility model provides a kind of air conditioning system based on water cold storage, comprising:

[0007] Refrigeration module, for providing cold quantity;

[0008] Cold storage module is connected with the refrigeration module, and has cold storage state and cold release state;

[0009] In the cold storage state, the cold storage module is stored by first electric energy;Wherein, the electricity price of the first electric energy is lower than the electricity price of required time period mains electric energy;

[0010] In the cold release state, the cold storage module is released to user end in required time period.

[0011] According to the air conditioning system based on water cold storage provided by the utility model, the first electric energy includes low valley electricity.

[0012] According to the air conditioning system based on water cold storage provided by the utility model, the first electric energy includes solar photovoltaic electricity.

[0013] According to the air conditioning system based on water cold storage provided by the utility model, the refrigeration module comprises:

[0014] A refrigeration host is used to realize refrigeration, and the refrigeration host and the cold storage module form a loop.

[0015] A water collector is connected with the inlet of the refrigeration host, and the water collector is used to connect the backwater outlet of the user end.

[0016] A water distributor is connected with the outlet of the refrigeration host, and the water distributor is used to connect the water inlet of the user end.

[0017] In the cold storage state, the refrigeration host refrigerates the cold storage module; in the cold release state, the refrigeration host and the cold storage module are both cooled to the user end.

[0018] According to the air conditioning system based on water cold storage provided by the utility model, the cold storage module comprises:

[0019] A cold storage pool is internally used to store cold storage water.

[0020] A cold storage pump and a cold release pump are connected with the cold storage pool, and the cold storage pump and the cold release pump both have an open state and a closed state; the cold storage pump is in the open state in the cold storage process, and the cold release pump is in the open state in the cold release process.

[0021] According to the air conditioning system based on water cold storage provided by the utility model, the refrigeration module further comprises:

[0022] A freezing pump is arranged between the water collector and the refrigeration host; the freezing pump is used to pump the water in the water collector to the refrigeration host.

[0023] According to the air conditioning system based on water cold storage provided by the utility model, the refrigeration module further comprises a cooling pump and a cooling tower, the cooling pump, the cooling tower and the refrigeration host are sequentially connected to form a loop.

[0024] According to the air conditioning system based on water cold storage provided by the utility model, the cold storage pump is connected with a first valve in parallel, and the cold release pump is connected with a second valve in parallel.

[0025] According to the air conditioning system based on water cold storage provided by the utility model, the cold storage pool is a fire pool.

[0026] According to the air conditioning system based on water cold storage provided by the utility model, a third valve is arranged at the inlet of the water distributor.

[0027] The air conditioning system based on water cold storage provided by the utility model provides cold quantity through the refrigeration module, the cold storage module is connected with the refrigeration module, the cold storage module has a cold storage state and a cold release state, in the cold storage state, the cold storage module stores cold through first electric energy, wherein the price of the first electric energy is lower than the price of the mains electric energy in the required period; the refrigeration module is started, and the cold quantity is stored in the cold storage module; in the cold release state, the cold storage module releases cold to the user end in the required period; energy saving, environmental protection and economic benefit improvement can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 It is the operation principle diagram of the air conditioning system in the prior art.

[0030] Figure 2 It is the cold storage operation principle diagram of the air conditioning system based on water cold storage provided by the utility model.

[0031] Figure 3 It is the cold release operation principle diagram of the air conditioning system based on water cold storage provided by the utility model.

[0032] REFERENCE NUMERALS

[0033] 1, refrigeration module; 2, cold storage module; 11, refrigeration host; 12, water collector; 13, water distributor; 14, freezing pump; 15, cooling pump; 16, cooling tower; 21, cold storage pool; 22, cold storage pump; 23, cold release pump; 24, first valve; 25, second valve; 26, third valve. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings in the utility model, and the technical scheme in the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0035] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] The following is combined with Figures 2-3 This invention describes a water-based air conditioning system.

[0037] like Figure 2 and Figure 3 As shown, this embodiment of the invention provides an air conditioning system based on water-based cold storage, including a refrigeration module 1 and a cold storage module 2. The refrigeration module 1 provides cooling capacity. The refrigeration module 1 absorbs and releases heat through refrigerant circulation, thereby generating cooling capacity. The cold storage module 2 is connected to the refrigeration module 1, and its interior is filled with a medium capable of storing cooling capacity. The cold storage module 2 has a cold storage state and a cold release state. In the cold storage state, the cold storage module 2 stores cooling capacity using a first electrical energy source; wherein the price of the first electrical energy source is lower than the price of the mains electricity during the required period. The refrigeration module is activated to store cooling capacity in the cold storage module. In the cold release state, the cold storage module 2 releases cooling capacity to the user during the required period, achieving energy saving, environmental protection, and improved economic benefits.

[0038] When electricity prices are low, typically during off-peak hours, the system switches to cold storage mode. At this time, the cooling modules begin operating, generating cooling capacity. This cooling capacity is transferred to the medium in the cold storage module 2, cooling it and storing the cooling energy. Because electricity prices are low at this time, using electricity for cooling and storing cooling capacity is economical and efficient.

[0039] When cooling is needed, usually during peak hours or when electricity prices are high, the system switches to cooling release mode. At this time, the cooling capacity in the cold storage module 2 is released and transferred to the user to meet the user's cooling needs.

[0040] In one feasible embodiment of this utility model, the first electrical energy includes off-peak electrical energy, and the cost of using off-peak electrical energy at night is lower than the cost of electrical energy during the required time period.

[0041] In the above embodiment, first, the air conditioning ice water system is powered by the mains alone, and during the low power consumption period, the unit is running, and the ice water produced is stored in the cold storage module 2; then, the ice water stored in the cold storage tank 21 is used for air conditioning refrigeration during the peak power consumption period. The embodiment uses low valley electricity to store cold for air conditioning, which can save energy costs.

[0042] In a feasible embodiment of the present application, the first electric energy includes solar photovoltaic electric energy.

[0043] In the above embodiment, when the air conditioning ice water system is powered by photovoltaic power, solar energy is converted into electric energy by the photovoltaic panel during the day to supply the unit, and ice water is produced and accumulated in the cold storage tank, and the cold is released at night for air conditioning; by using solar photovoltaic electric energy, energy costs can be saved, energy consumption can be reduced, and the economy and environmental friendliness of the system can be improved.

[0044] In a feasible embodiment of the present application, the refrigeration module 1 includes a refrigeration host 11, a water collector 12, and a water distributor 13, the refrigeration host 11 is used to realize refrigeration, and the refrigeration host 11 forms a loop with the cold storage module 2; the refrigeration host 11 usually includes a compressor, a condenser, an expansion valve, and a key component of a refrigeration cycle, such as an evaporator. Through the circulation of refrigerant, the refrigeration host 11 can absorb heat from the environment and discharge it to the external environment, thereby generating cold. The water collector 12 is connected with the inlet of the refrigeration host 11, and the water collector 12 is used to connect the return water inlet of the user end, and the water collector 12 can collect the return water from the user end, and the return water enters the refrigeration host 11 through the water collector 12, and is cooled and then sent back to the user end by the water distributor 13. The water distributor 13 is connected with the outlet of the refrigeration host 11; the water distributor 13 is used to connect the water inlet of the user end, and the water distributor 13 distributes the cooled water of the refrigeration host 11 to the user end, and the user end can obtain the required cold.

[0045] In the cold storage state, the refrigeration host 11 cools the cold storage module; during the off-peak period when the electricity price is low, the system is in a cold storage state. At this time, the refrigeration host 11 starts to work, absorbs heat from the environment and generates cold. These colds are transferred to the medium (such as water) in the cold storage module 2, so that the medium is cooled and the cold is stored. At the same time, since the user end may not need a large amount of cold at this time, the water collector 12 and the water distributor may be in a closed or low-flow state to reduce unnecessary energy loss.

[0046] When the electricity price is high or the user needs cold energy, the system switches to the cold release state. At this time, the cold energy in the cold storage module 2 is released and delivered to the refrigeration host 11. The refrigeration host 11 can also work at the same time to supplement the cold energy released by the cold storage module 2. Then, the cold energy is distributed to the user end through the water distributor 13 to meet the refrigeration demand of the user. At the same time, the return water of the user end enters the refrigeration host 11 again through the water collector 12 to form a cooling cycle.

[0047] By utilizing the electricity price difference and energy storage technology, the system can store cold energy when the electricity price is low and release cold energy when the electricity price is high, so as to optimize the energy use efficiency and reduce the operation cost.

[0048] In a feasible embodiment of the utility model, the cold storage module 2 includes a cold storage pool 21, a cold storage pump 22 and a cold release pump 23, the cold storage pool 21 stores cold water inside, and the cold water is stored during the cold storage process to release cold energy when needed. The cold storage pump 22 and the cold release pump 23 are connected with the cold storage pool 21, and the cold storage pump 22 and the cold release pump 23 both have an open state and a closed state; the cold storage pump 22 is in the open state during the cold storage process, and the cold release pump 23 is in the open state during the cold release process.

[0049] In the above embodiment, the cold storage pump 22 is used to deliver the cold water generated by the refrigeration host 11 to the cold storage pool 21 during the cold storage process. When the system is in the cold storage state, the cold storage pump 22 is in the open state, and the cold water is continuously sent to the cold storage pool 21 until the predetermined cold storage amount or time is reached. The cold release pump 23 is used to deliver the cold water in the cold storage pool 21 to the user end during the cold release process. When the system is in the cold release state, the cold release pump is in the open state, and the cold water is continuously pumped out from the cold storage pool 21 and delivered to the water distributor 13.

[0050] In a feasible embodiment of the utility model, the refrigeration module 1 further includes a freezing pump 14 arranged between the water collector 12 and the refrigeration host 11; the freezing pump 14 is used to pump the water in the water collector 12 to the refrigeration host 11. The freezing pump 14 can improve the flow rate and pressure of the water to ensure that the water can smoothly enter the refrigeration host 11 and be subjected to cooling treatment.

[0051] In the refrigeration process, the water collector 12 collects the return water from the user end, which absorbs heat and needs to be cooled. After the refrigeration pump 14 is started, the water in the water collector 12 is pumped out and transported to the refrigeration host 11 through the pipeline. The refrigeration host 11 receives the water from the refrigeration pump 14 and removes the heat in the water through the circulation work inside the refrigeration host 11, thereby realizing the cooling of the water. The cooled water is sent back to the water distributor 13 and is distributed to the user end again to provide the refrigeration effect. At the same time, the return water collected by the water collector 12 from the user end can also be directly returned to the cold storage water tank 21, and the cold water in the cold storage water tank 21 is pumped out by the cooling pump 23 and returned to the water distributor 13 and distributed to the user end again.

[0052] In a feasible embodiment of the utility model, the refrigeration module 1 further includes a cooling pump 15 and a cooling tower 16, the cooling pump 15, the cooling tower 16 and the refrigeration host 11 are sequentially connected to form a loop. The cooling pump 15 can improve the flow rate and pressure of the cooling water, and ensure that the cooling water can enter the condenser and remove the heat generated in the refrigeration process. The cooling tower is a user heat exchange device, which is used to discharge the heat generated in the condenser of the refrigeration host 11 to the atmosphere. The cooling pump 15 and the cooling tower 16 are provided for backup when the cold storage module 2 fails.

[0053] In a feasible embodiment of the utility model, the cold storage pump 22 is connected in parallel with a first valve 24. When the cold storage pump 22 is working normally, the first valve 24 remains in a closed state, so as to ensure that the cooling water can smoothly pass through the cold storage pump 22 and be sent into the cold storage water tank 21. When the cold storage pump 22 is not working, the first valve 24 can remain in an open state, so as to ensure that the water can pass through the first valve 24 and enter the cold storage water tank 21.

[0054] The cooling pump 23 is connected in parallel with a second valve 25. In the cooling process, the second valve 25 remains in a closed state, so as to ensure that the cooling water can smoothly pass through the cooling pump 23 and be sent into the user end or the loop of the refrigeration host 11. When the cooling pump 23 is not working, the second valve 25 remains in an open state, so as to ensure that the water can pass through the second valve 25 and enter the cold storage water tank 21.

[0055] In a feasible embodiment of the utility model, the cold storage water tank 21 is a fire water tank. The cold storage water tank 21 not only ensures the storage of the fire water in battle readiness, but also meets the cold storage demand. The cold storage water tank 21 does not need to be built separately, and the low-temperature water effect is better when the water is used for fire fighting.

[0056] In a feasible embodiment of the utility model, a third valve 26 is arranged at the inlet of the water distributor 13, and the flow of the cooling water of the water distributor 13 can be controlled through the third valve 26. The arrangement of the third valve 26 at the inlet of the water distributor 13 further increases the flexibility and controllability of the refrigeration system, so that the system can more accurately meet the cooling demand of the user, and the overall performance and reliability of the system are improved.

[0057] In the description of the embodiments of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "way", "specific way" or "some ways" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or way are included in at least one embodiment or way of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or way. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or ways in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or features of the different embodiments or ways described in the present application without contradiction.

[0059] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A water storage-based air conditioning system, characterized by, include: Refrigeration module (1) is used to provide cooling capacity; The cold storage module (2) is connected to the refrigeration module (1) and has a cold storage state and a cold release state; In the cold storage state, the cold storage module (2) stores cold energy through a first electrical energy source; wherein the price of the first electrical energy source is lower than the price of the mains electricity source for the required period. In the cooling state, the cold storage module (2) cools the user end during the required period.

2. The water storage based air conditioning system according to claim 1, wherein, The first electrical energy includes off-peak electricity.

3. The water storage based air conditioning system according to claim 1, wherein, The first type of electrical energy includes solar photovoltaic power.

4. The water storage based air conditioning system according to any one of claims 1-3, wherein, The refrigeration module (1) includes: A refrigeration unit (11) is used to achieve refrigeration; and the refrigeration unit (11) and the cold storage module (2) form a circuit; The water collector (12) is connected to the inlet of the refrigeration unit (11), and the water collector (12) is used to connect to the return water port of the user end; Water distributor (13) is connected to the outlet of the refrigeration unit (11); water distributor (13) is used to connect to the water inlet of the user end; In the cold storage state, the refrigeration host (11) cools the cold storage module (2); in the cold release state, both the refrigeration host (11) and the cold storage module (2) release cold to the user end.

5. The water storage based air conditioning system according to claim 4, wherein, The cold storage module (2) includes: The cold water storage tank (21) stores cold water inside; The cold storage pump (22) and the cold release pump (23) are both connected to the cold storage water tank (21), and both the cold storage pump (22) and the cold release pump (23) have an open state and a closed state; the cold storage pump (22) is in the open state during the cold storage process, and the cold release pump (23) is in the open state during the cold release process.

6. The water storage based air conditioning system according to claim 4, wherein, The refrigeration module (1) further includes: A chilled water pump (14) is disposed between the water collector (12) and the chiller unit (11); the chilled water pump (14) is used to pump water from the water collector (12) to the chiller unit (11).

7. The water storage based air conditioning system according to claim 4, wherein, The refrigeration module (1) also includes a cooling pump (15) and a cooling tower (16), which are connected in sequence to form a loop. 8.The water-storage-based air conditioning system according to claim 5, wherein, The cold storage pump (22) is connected in parallel with a first valve (24), and the cold release pump (23) is connected in parallel with a second valve (25).

9. The water storage based air conditioning system according to claim 5, wherein, The cold storage water tank (21) is a fire-fighting water tank.

10. The water storage based air conditioning system according to claim 4, wherein, A third valve (26) is provided at the inlet of the water distributor (13).

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