Phase change cold storage tank for cold storage of air conditioner

Abstract

The phase change cold storage tank comprises a heat preservation tank body, a secondary refrigerant inlet, a secondary refrigerant outlet and a self-packaging phase change cold storage ball, the secondary refrigerant inlet is formed in the top end of the heat preservation tank body and used for being connected with an air conditioner chilled water supply pipe, and the secondary refrigerant outlet is formed in the bottom end of the heat preservation tank body and used for being connected with a tail end water supply pipe. The self-packaging phase change cold storage balls are evenly dispersed in the inner space of the heat preservation tank body, and the pore plate is arranged in the heat preservation tank body and used for supporting the self-packaging phase change cold storage balls to promote heat exchange between the secondary refrigerant and the cold storage balls. By means of the mode, the phase change cold storage tank for air conditioner cold storage effectively combines the air conditioner refrigeration technology and the phase change energy storage technology, the problem that the refrigeration load of a refrigeration unit is not matched with the building load can be effectively solved, the efficient area of the refrigeration unit is fully utilized, the COP of the refrigeration unit is greatly improved, and the energy efficiency of the refrigeration unit is greatly improved. And cross-time transfer of energy can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the phase change cold storage technical field, especially a kind of phase change cold storage tank for air conditioner cold storage. BACKGROUND

[0002] The building energy consumption of our country is about 30% of total energy consumption of society terminal, and the energy consumption generated by refrigeration or heating is about 40~50% of building energy consumption, and conventional air conditioner refrigeration adopts voltage compression type refrigeration mode, and a few lithium bromide absorption type refrigeration mode.

[0003] Due to different ambient temperatures, building load and refrigeration efficiency of cold machine appear mismatching in different ambient temperature conditions, that is, when daytime ambient temperature is higher, building load demand is larger, but refrigeration efficiency of cold machine is lower;On the contrary, when nighttime, building load demand is smaller, refrigeration efficiency of cold machine is higher;Therefore, the matching of cold machine and building load is just opposite, which causes that when configuring refrigeration unit, excessive redundancy is generated to meet the demand of daytime peak period, and excessive refrigeration smelting needs to be configured, thereby unnecessary energy consumption and cost are generated.

[0004] In addition, at night or other non-peak period, when refrigeration unit can be efficiently operated, the excess cold generated by it often cannot be effectively stored and utilized, but is dissipated in air, which not only wastes energy, but also aggravates load imbalance of power grid, leading to the increase of power loss. SUMMARY

[0005] The utility model mainly solves the technical problem to provide a kind of phase change cold storage tank for air conditioner cold storage, effectively combines air conditioner refrigeration technology with phase change energy storage technology, can effectively solve the problem of refrigeration load energy efficiency and building load mismatching of refrigeration unit, and make full use of the high efficiency area of refrigeration unit, so that the refrigeration unit energy efficiency ratio COP is greatly improved, and energy can be transferred across time.

[0006] To solve the above technical problems, one technical scheme of the utility model is provided: provide a kind of phase change cold storage tank for air conditioner cold storage, characterized by comprising:

[0007] Thermal insulation tank body, for storing phase change cold storage ball and refrigerant medium;

[0008] Refrigerant import, set up at the top of thermal insulation tank body, for connecting air conditioner chilled water supply pipe, to introduce chilled water as refrigerant into thermal insulation tank body;

[0009] Refrigerant outlet, set up at the bottom of thermal insulation tank body, for connecting terminal water supply pipe, to output the refrigerant stored to air conditioning system terminal to supply cold;

[0010] The self-sealing phase change cold storage balls are uniformly dispersed in the internal space of the heat preservation tank body.

[0011] The perforated plate is arranged in the heat preservation tank body and is used for supporting the self-sealing phase change cold storage balls to promote heat exchange between the cold carrier and the cold storage balls.

[0012] In a preferable embodiment of the present application, the heat preservation tank body is an adiabatic pressure container to provide an adiabatic closed space.

[0013] In a preferable embodiment of the present application, the heat preservation tank body is provided with a tank head in the shape of a circular arc at both ends.

[0014] In a preferable embodiment of the present application, the perforated plate is arranged in a detachable manner between the inner cavity of the heat preservation tank body and the tank head at the bottom.

[0015] In a preferable embodiment of the present application, the self-sealing phase change cold storage ball comprises a thermoplastic resin sealing and shaping material and water-absorbing resin-based phase change cold storage material particles arranged in the thermoplastic resin sealing and shaping material.

[0016] In a preferable embodiment of the present application, the diameter of the self-sealing phase change cold storage ball is 10-30 mm.

[0017] In a preferable embodiment of the present application, the cold carrier in the heat preservation tank body exchanges heat with the phase change cold storage material in the self-sealing phase change cold storage ball.

[0018] The present application has the advantages that: the air conditioner cold machine can store cold energy when running efficiently at night, and the stored cold energy can be used for the end use in the daytime, thus solving the problem of mismatch between building load and air conditioner energy efficiency, and achieving peak load cutting and valley load filling of electric power, promoting power grid balance, and achieving high efficiency and energy saving; the fluid in the tank flows uniformly, the self-sealing phase change cold storage ball has a large specific surface area and a small heat exchange temperature difference, and is perfectly combined with the air conditioner refrigeration system, thus improving the overall energy efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort, and the drawings include:

[0020] Figure 1 is a structure diagram of a preferable embodiment of the phase change cold storage tank for air conditioner cold storage of the present application;

[0021] The labels of the components in the drawings are as follows:

[0022] 1, coolant inlet, 2, coolant outlet, 3, heat preservation tank body, 4, orifice plate, 5, self-sealing phase change cold storage ball, 6, coolant. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0025] Please refer to Figure 1 The present application relates to a preferred embodiment of a phase change cold storage tank for air conditioning cold storage.

[0026] The phase change cold storage tank for air conditioning cold storage comprises a heat preservation tank body 3, a coolant inlet 1, a coolant outlet 2, self-sealing phase change cold storage balls 5 and an orifice plate 4.

[0027] Specifically, first is the heat preservation tank body 3, which is an adiabatic pressure vessel to provide an adiabatic closed space capable of safely and stably storing phase change cold storage balls and coolant medium.

[0028] The heat preservation tank body 3 is provided with a tank head in the form of a circular arc at both ends, which can enhance the structural strength of the tank body and help to reduce the possibility of forming dead corners or vortexes inside the tank body, thereby improving the heat exchange efficiency between the coolant and the cold storage balls.

[0029] Secondly, the coolant inlet 1 and the coolant outlet 2, the coolant inlet 1 is arranged at the top end of the heat preservation tank body 3, used for connecting the chilled water supply pipe of the air conditioner, so as to introduce chilled water as coolant into the heat preservation tank body 3; correspondingly, the coolant outlet 2 is arranged at the bottom end of the heat preservation tank body 3, used for connecting the terminal water supply pipe, so as to output the cooled coolant 6 to the terminal of the air conditioning system for cooling supply.

[0030] In addition, the phase change cold storage medium of the embodiment adopts self-packaged phase change cold storage balls 5, the diameter of the self-packaged phase change cold storage balls 5 is 10-30 mm, and the self-packaged phase change cold storage balls 5 are spherical phase change cold storage structures made of 7-9 DEG C phase change cold storage materials, water-absorbing resins and thermoplastic resins.

[0031] Further, the self-packaged phase change cold storage balls 5 are uniformly dispersed in the internal space of the heat preservation tank body 3, and include thermoplastic resin packaging and shaping materials and water-absorbing resin-based phase change cold storage material particles arranged in the thermoplastic resin packaging and shaping materials.

[0032] Further, a perforated plate 4 is detachably connected between the inner cavity of the heat preservation tank body 3 and the tank head at the bottom, the perforated plate 4 serves as a support structure and can stably bear the self-packaged phase change cold storage balls, so that the uniform distribution of the cold storage balls in the tank is ensured, the cold storage balls can effectively transfer cold energy to the cold storage balls, and the heat exchange process between the cold storage balls and the cold storage balls is optimized.

[0033] The working principle of the phase change cold storage tank for air conditioner cold storage is as follows:

[0034] Cold storage condition: when the 6 DEG C cold storage agent enters the phase change cold storage heat preservation tank body 3 through the cold storage agent inlet 1, the cold storage agent 6 flows through the gaps between the self-packaged phase change cold storage balls 5, and when the cold storage agent 6 passes through the surfaces of the self-packaged phase change cold storage balls 5, heat exchange is performed between the cold storage agent 6 and the phase change cold storage balls, cold energy is transferred to the phase change cold storage materials in the phase change cold storage balls, and the phase change cold storage materials in the phase change cold storage balls change phase to store cold energy in the form of latent heat.

[0035] At the beginning of the cold storage condition, because the self-packaged phase change cold storage balls absorb cold energy, the temperature of the cold storage agent inlet 1 is lower than that of the cold storage agent outlet 2, and when the self-packaged phase change cold storage balls in the phase change cold storage tank store saturated cold energy, the temperatures of the cold storage agent inlet 1 and the cold storage agent outlet 2 tend to be equal.

[0036] Cold supply condition: when the cold storage agent with a temperature greater than 6 DEG C enters the phase change cold storage heat preservation tank body 3 through the cold storage agent inlet 1, the cold storage agent 6 again performs heat exchange with the self-packaged phase change cold storage balls 5, the phase change cold storage balls change phase to transfer cold energy to the cold storage agent 6, and the cooled cold storage agent is directly supplied to the terminal through the cold storage agent outlet 2, thereby completing the entire cold storage and cold supply process.

[0037] The phase change cold storage tank for air conditioner cold storage has the following beneficial effects:

[0038] The air conditioner cold machine can store cold energy in the night high-efficiency area and use the stored cold energy in the daytime low-efficiency area to supply the terminal, and the cold energy is stored in the night high-efficiency area.

[0039] The problem of unbalance of power grid can be effectively solved by using valley electricity for cold storage in the evening, peak load shifting of electricity is realized, efficient energy saving is realized, equipment configuration is reduced, and operation cost is reduced.

[0040] The fluid flows uniformly in the tank, the specific surface area of the self-sealing phase change cold storage ball is large, the heat exchange temperature difference is small, the air conditioner refrigeration system can be combined well, and the problem that the refrigeration load of the refrigeration unit and the building load are not matched can be effectively solved.

[0041] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation made by using the content of the present application specification, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A phase change cold storage tank for air conditioning cold storage, characterized in that, include: Insulated tanks are used to store phase change cold storage bulbs and refrigerant media; The refrigerant inlet is located at the top of the insulated tank and is used to connect to the air conditioning chilled water supply pipe to introduce chilled water as a refrigerant into the insulated tank. The refrigerant outlet is located at the bottom of the insulated tank and is used to connect to the terminal water supply pipe to output the refrigerant that has been stored in the cold to the terminal of the air conditioning system for cooling. Self-encapsulated phase change cold storage balls are evenly dispersed inside the insulated tank. An orifice plate, installed inside the insulated tank, is used to support the self-encapsulated phase change cold storage ball to promote heat exchange between the refrigerant and the cold storage ball.

2. The phase change cold storage tank for air conditioning cold storage according to claim 1, characterized in that, The insulated tank is an insulated pressure vessel to provide an insulated, enclosed space.

3. The phase change cold storage tank for air conditioning cold storage according to claim 1, characterized in that, The insulated tank has arc-shaped tank heads at both ends.

4. The phase change cold storage tank for air conditioning cold storage according to claim 3, characterized in that, The perforated plate is detachably installed between the inner cavity of the insulated tank and the bottom tank head.

5. The phase change cold storage tank for air conditioning cold storage according to claim 1, characterized in that, The self-encapsulated phase change cold storage ball includes a thermoplastic resin encapsulation and shaping material and water-absorbing resin-based phase change cold storage material particles disposed inside the thermoplastic resin encapsulation and shaping material.

6. The phase change cold storage tank for air conditioning cold storage according to claim 5, characterized in that, The diameter of the self-encapsulated phase change cold storage ball is 10~30mm.

7. The phase change cold storage tank for air conditioning cold storage according to claim 5, characterized in that, The refrigerant inside the insulated tank exchanges heat with the phase change cold storage material inside the self-encapsulated phase change cold storage ball.

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