An energy-saving industrial water chiller

Abstract

The present invention provides an energy-saving industrial chiller, which relates to the field of energy-saving industrial chillers. The energy-saving industrial chiller includes a chassis and a chiller unit installed inside the chassis. The chiller unit includes an evaporator chamber and a condenser chamber, and the evaporator chamber and the condenser chamber are connected by a valve pipe. It also includes two water tanks, a refrigerant heat dissipation fin group, a water-cooled heat dissipation fin group and a heat insulation component installed inside the chassis. The heat insulation component is used to isolate the heat transfer between the two water tanks. In this energy-saving industrial chiller, the return water after heat exchange can first enter the condenser chamber from the warm water tank to cool the refrigerant copper pipe, and then be pumped to the water-cooled heat dissipation fin group for air-cooled cooling. Finally, it enters the evaporator chamber through the valve pipe for cooling treatment. Since the return water has undergone air-cooled circulation cooling, when cooling in the evaporator chamber, the compressor does not need to operate at full power, only increasing the load of the fan and not increasing the load of the compressor.

Description

Technical Field

[0001] The present invention relates to the field of industrial energy-saving chillers, in particular to an energy-saving industrial chiller. Background Art

[0002] An industrial chiller is a type of water chiller. Chillers can be divided into air-cooled and water-cooled types. They are cooling devices that provide constant temperature, constant flow, and constant pressure. Chillers are categorized into low-temperature chillers and normal-temperature chillers based on temperature control. Normal-temperature chillers are generally controlled within the range of 0°C to 35°C, while low-temperature chillers are generally controlled within the range of 0°C to -45°C. The chiller's principle is to inject a certain amount of water into the machine's internal water tank, cool the water through the chiller's refrigeration system, and then an internal water pump injects the low-temperature, chilled water into the equipment to be cooled. The chilled water removes the heat from the machine, returning the hot water to the tank for cooling. This cycle of exchange and cooling achieves the desired cooling effect. With the continuous development of the chiller industry, it has become widely used in various industries.

[0003] At present, the refrigerant circulation system of the chiller is that the liquid refrigerant in the evaporator absorbs heat from the water and begins to evaporate. Eventually, a certain temperature difference is formed between the refrigerant and the water. The liquid refrigerant also completely evaporates and becomes gaseous, which is then sucked into and compressed by the compressor. The gaseous refrigerant releases heat through the condenser and condenses into liquid. After throttling through the thermal expansion valve, it becomes low-temperature and low-pressure refrigerant and enters the evaporator, completing the refrigerant circulation process.

[0004] In traditional processes, heat exchange return water is directly fed into the evaporator for cooling. Because the return water temperature is high, cooling it directly to a certain level consumes a large amount of refrigerant and takes a long time, resulting in high energy consumption. Furthermore, in autumn and winter, when the return water temperature is low, frequent compressor activation can damage the equipment. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an energy-saving industrial chiller, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving industrial chiller, comprising a chassis and a chiller installed inside the chassis, the chiller including an evaporator chamber and a condenser chamber, the evaporator chamber and the condenser chamber being connected by a valve pipe, and further comprising two water tanks installed inside the chassis, a refrigerant heat dissipation fin group, a water-cooled heat dissipation fin group, and a thermal insulation component for isolating heat from flowing between the two water tanks;

[0007] The refrigerant heat dissipation fin group is used to circulate the refrigerant of the chiller;

[0008] Both groups of water-cooled heat dissipation fin groups are used for circulating the cooling water inside the condenser chamber of the water chiller;

[0009] The two water tanks are divided into a warm water tank and an ice water tank. The warm water tank and the ice water tank are respectively connected to the condenser chamber and the evaporator chamber of the water chiller. The warm water tank can discharge the water to be cooled into the evaporator chamber, and the evaporator chamber can store the cooled cooling water in the ice water tank;

[0010] A part of the water in the warm water tank can be transferred to the condenser chamber to cooperate with the water-cooled heat dissipation fin group to cool the internal condenser copper pipe. The warm water tank can also circulate all the water inside it to the condenser chamber, and then use the water-cooled heat dissipation fin group to cool it by air, and store it in the ice water tank after cooling.

[0011] Preferably, there are two groups of the water-cooled heat dissipation fin groups, which are distributed in a V shape on the top of the chassis and fixed to the chassis. There is one group of refrigerant heat dissipation fin groups, which is located between the bottoms of the two water-cooled heat dissipation fin groups and fixed to the chassis. The vertically upward air flow can act on the two water-cooled heat dissipation fin groups and one refrigerant heat dissipation fin group at one time.

[0012] Preferably, both the circulating water outlet and inlet of the water-cooled heat dissipation fin group are connected to the inside of the condenser chamber of the water chiller through a valve and pump water pipe A.

[0013] Preferably, both the warm water tank and the ice water tank are connected to the condenser chamber of the water chiller through a valve and pump water pipe B, and both the warm water tank and the ice water tank are connected to the inside of the evaporator chamber of the water chiller through a valve and pump water pipe C.

[0014] Preferably, the heat insulation component includes two front and rear heat insulation plates and an intermediate heat insulation plate. The front and rear heat insulation plates are attached to the inner wall of the chassis, and the intermediate heat insulation plate is located between the two front and rear heat insulation plates and installed between the two water tanks.

[0015] Preferably, a fan is also installed above the chassis to cool the water-cooled heat dissipation fin group and the refrigerant heat dissipation fin group.

[0016] Preferably, pump water pipes are installed at the upper ends of the water tanks, and the pump water pipes all extend outside the chassis.

[0017] Preferably, heat dissipation holes are provided on the side walls of the chassis.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] For this energy-saving industrial chiller, the return water after heat exchange can first enter the condenser chamber from the warm water tank to cool the refrigerant copper tubes, and then be pumped to the water-cooled heat dissipation fin group for air-cooled cooling. Finally, it enters the evaporator chamber through the valve pipe for cooling treatment. Since the return water has undergone air-cooled circulation cooling, when cooling in the evaporator chamber, the compressor does not need to operate at full power, only increasing the load of the fan and not increasing the load of the compressor.

[0020] For this energy-saving industrial chiller, the evaporator chamber can cool the cooling water entering it and transfer it to the ice water tank. The warm water after cooling the industrial mechanical equipment first enters the warm water tank to wait for cooling, and the cooling water in the ice water tank is first used to cool the mechanical equipment. The heat of the two does not cross each other, so it will not cause the overall temperature of the cooling water to become higher during long-term use, resulting in an increase in the load of the chiller.

[0021] For this energy-saving industrial chiller, when the external temperature is relatively low, the return water can directly enter the condenser chamber, and then use the water-cooled heat dissipation fin group for air-cooled cooling. The return water after cooling is stored in the ice water tank for temporary use.

[0022] For this energy-saving industrial chiller, a part of the water in the warm water tank can be used to enter the condenser chamber, cooperate with the water-cooled heat dissipation fin group for air-cooled cooling, and finally cool the refrigerant to be condensed. Cooperate with the refrigerant heat dissipation fin group for double cooling and condensation. Finally, it can play a greater heat absorption role in the evaporator chamber, and the probability of the equipment restarting due to high temperature is greatly reduced. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present invention;

[0024] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0025] Figure 3 It is a side view of the internal structure of the present invention;

[0026] Figure 4 It is an internal structure diagram of the chassis of the present invention;

[0027] Figure 5 It is another side view of the internal structure of the chassis of the present invention;

[0028] Figure 6 It is a structural diagram of the chiller and the water tank of the present invention;

[0029] Figure 7 It is a structural diagram of the chiller of the present invention.

[0030] In the figure: 1, chassis; 2, chiller; 3, refrigerant heat dissipation fin group; 4, water-cooled heat dissipation fin group; 5, thermal insulation component; 6, warm water tank; 7, ice water tank; 8, valve and pump water pipe A; 9, valve and pump water pipe B; 10, valve and pump water pipe C; 11, thermal insulation board; 12, intermediate thermal insulation board; 13, fan; 14, pump water pipe; 15, heat dissipation hole. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indication will also change accordingly.

[0033] In the present application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions conflicts or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0035] Such as Figures 1-7As shown in the figure, an energy-saving industrial chiller includes a chassis 1 and a chiller unit 2 installed inside the chassis 1. The chiller unit 2 includes an evaporator chamber and a condenser chamber, and the evaporator chamber and the condenser chamber are connected by a valve pipe. It also includes two water tanks, a refrigerant heat dissipation fin group 3, a water-cooled heat dissipation fin group 4 and a heat insulation component 5 installed inside the chassis 1. The heat insulation component 5 is used to isolate the heat transfer between the two water tanks;

[0036] The refrigerant heat dissipation fin group 3 is used to circulate the refrigerant of the chiller unit 2;

[0037] Both groups of water-cooled heat dissipation fin groups 4 are used to circulate the cooling water inside the condenser chamber of the chiller unit 2;

[0038] The two water tanks are divided into a warm water tank 6 and an ice water tank 7. The warm water tank 6 and the ice water tank 7 are respectively connected to the condenser chamber and the evaporator chamber of the chiller unit 2. The warm water tank 6 can discharge the water to be cooled into the evaporator chamber, and the evaporator chamber can discharge the cooled cooling water into the ice water tank 7 for storage;

[0039] Part of the water in the warm water tank 6 can be transferred to the condenser chamber to cooperate with the water-cooled heat dissipation fin group 4 to cool the internal condenser copper pipe. The warm water tank 6 can also circulate all the water inside it to the condenser chamber, and then use the water-cooled heat dissipation fin group 4 to cool it by air, and store it in the ice water tank 7 after cooling.

[0040] An industrial chiller is a device that provides constant low-temperature cooling water for industrial equipment or processes through a refrigeration cycle, and is widely used in industrial scenarios that require precise temperature control or heat dissipation. Its core functions include:

[0041] Cooling: Control the cooling water temperature within a set range (usually 5°C to 35°C).

[0042] Constant temperature: Maintain the temperature stability of the process.

[0043] Energy saving: Reduce energy consumption through an efficient refrigeration system.

[0044] Generally, the core inside an industrial chiller is the chiller unit 2. The chiller unit 2 includes a compressor. The common heat dissipation methods are air-cooled chillers (dissipate heat through a fan, do not require a cooling tower, are easy to install, and are suitable for water-scarce or open environments) and water-cooled chillers (rely on a cooling tower and circulating water for heat dissipation, with high efficiency but require a supporting water system, and are suitable for large industrial scenarios).

[0045] The evaporator chamber absorbs the heat of the cooling water by the liquid refrigerant and evaporates into a gas state, reducing the water temperature.

[0046] The condenser chamber cools the high-temperature and high-pressure refrigerant through air / water cooling and condenses it into a liquid state.

[0047] The chiller 2 also includes an expansion valve: the liquid refrigerant is depressurized and then re-enters the evaporator for cyclic refrigeration.

[0048] The refrigeration formula is:

[0049]

[0050] Different from the prior art, a valve pipe is adopted between the evaporator chamber and the condenser chamber. The valve pipe includes a transmission pipeline and an electrically controlled valve. After sending an electrical signal, the electrically controlled valve can be controlled to open and close, and the flow rate can also be controlled, so as to control the communication between the space inside the condenser chamber and the space inside the evaporator chamber.

[0051] The water tank is made of stainless steel, has a large capacity and good rust prevention effect. The water tank is suspended and fixed inside the chassis 1 by bolts and does not contact with heat-generating materials.

[0052] The water-cooled heat dissipation fin group 4 has the same structure as the refrigerant heat dissipation fin group 3, both are provided with zigzag copper pipes and aluminum sheets, but the media flowing inside the two are different. One can be used for flowing water and the other is only used for circulating refrigerant.

[0053] In actual use, the cooling water inside the warm water tank 6 and the ice water tank 7 is generally pure water, which is used to supply water to the circulating box heating equipment and does not scale and is not easy to rust.

[0054] In an optional embodiment, there are two groups of water-cooled heat dissipation fin groups 4, which are distributed in a V shape on the top of the chassis 1 and fixed to the chassis 1. There is one group of refrigerant heat dissipation fin groups 3, which is located between the bottoms of the two water-cooled heat dissipation fin groups 4 and fixed to the chassis 1. The vertically upward air flow can act on the two water-cooled heat dissipation fin groups 4 and one refrigerant heat dissipation fin group 3 at one time.

[0055] In this embodiment, the water-cooled heat dissipation fin group 4 distributed in a V shape is on the top and the refrigerant heat dissipation fin group 3 is on the bottom, which can avoid the heat generated by the water-cooled heat dissipation fin group 4 acting on the refrigerant heat dissipation fin group 3. The distribution states of the three can use the vertically upward air flow to take away heat together, and the vertically upward air flow and the position distribution of the three can avoid heat intermixing to the greatest extent.

[0056] In an optional embodiment, both the circulating water outlet and inlet of the water-cooled heat dissipation fin group 4 are connected to the inside of the condenser chamber of the chiller 2 through a valve and pump water pipe A8.

[0057] In this embodiment, the inside of the condenser chamber needs to be cooled to condense the high-temperature and high-pressure refrigerant. Therefore, circulating water can be directly used inside to cool the refrigerant. The circulating water used for cooling can be pumped to the water-cooled heat dissipation fin group 4 by the valve and pump water pipe A8 for cooling. The valve and pump water pipe A8 can not only be controlled to open and close by an electrical signal, but also pump water flow.

[0058] In an optional embodiment, both the warm water tank 6 and the ice water tank 7 are communicated with the condenser chamber of the chiller 2 through the valve-equipped and pump-equipped water pipe B9, and both the warm water tank 6 and the ice water tank 7 are internally communicated with the evaporator chamber of the chiller 2 through the valve-equipped and pump-equipped water pipe C10.

[0059] In this embodiment, when communicating with the condenser chamber, water can be supplied to the condenser chamber. One is to provide cooling water for cooling the refrigerant in the condenser chamber, and the other is that after the water in the warm water tank 6 is transferred to the condenser chamber, the warm water can be cooled by the water-cooled heat dissipation fin group 4 (the compressor does not operate and the condenser does not release heat).

[0060] In an optional embodiment, the heat insulation assembly 5 includes two front and rear heat insulation plates 11 and an intermediate heat insulation plate 12. The front and rear heat insulation plates 11 are attached to the inner wall of the chassis 1, and the intermediate heat insulation plate 12 is located between the two front and rear heat insulation plates 11 and is installed between the two water tanks.

[0061] In this embodiment, the front and rear heat insulation plates 11 and the intermediate heat insulation plate 12 are combined into an "I" shape to isolate the heat between the two water tanks.

[0062] In an optional embodiment, a fan 13 is further installed above the chassis 1 for cooling the water-cooled heat dissipation fin group 4 and the refrigerant heat dissipation fin group 3.

[0063] In this embodiment, the fan 13 is an efficient and low-noise condensing fan with a large air volume and low noise.

[0064] In an optional embodiment, pump water pipes 14 are installed at the upper ends of the water tanks, and the pump water pipes 14 all extend outside the chassis 1.

[0065] In this embodiment, the pump water pipes 14 are used to connect devices. The pump water pipe 14 connected to the ice water tank 7 is mainly used for device cooling, and the pump water pipe 14 connected to the warm water tank 6 is used for backwater.

[0066] In an optional embodiment, heat dissipation holes 15 are provided on the side walls of the chassis 1.

[0067] In this embodiment, the heat dissipation holes 15 can dissipate the heat generated by the internal working components of the chassis 1.

[0068] During normal use, the evaporator chamber can cool the cooling water entering it and transfer it to the ice water tank 7. The warm water after cooling the industrial mechanical equipment first enters the warm water tank 6 to wait for cooling, and the cooling water in the ice water tank 7 is first used to cool the mechanical equipment. The heat of the two does not cross each other, so the overall temperature of the cooling water will not become too high during long-term use, causing the load of the chiller 2 to increase.

[0069] If the return water temperature after heat exchange is too high, the return water after heat exchange can first enter the condenser chamber from the warm water tank 6 to cool the refrigerant copper tube, and then be pumped to the water-cooled heat dissipation fin group 4 for air-cooled cooling. Finally, it enters the evaporator chamber through the valve pipe for cooling treatment. Since the return water has undergone air-cooled circulation cooling, when cooling in the evaporator chamber, the compressor does not need to operate at full power, only increasing the load of the fan 13 and not increasing the load of the compressor.

[0070] When the external temperature is relatively low, the return water can directly enter the condenser chamber and then use the water-cooled heat dissipation fin group 4 for air-cooled cooling. The return water after cooling is stored in the ice water tank 7 for temporary use.

[0071] When high-power water-cooled heat dissipation is required, a part of the water in the warm water tank 6 can be used to enter the condenser chamber, cooperate with the water-cooled heat dissipation fin group 4 for air-cooled cooling, and finally cool the refrigerant to be condensed. Cooperate with the refrigerant heat dissipation fin group 3 for double cooling and condensation. Finally, a greater heat absorption effect can be exerted in the evaporator chamber, and the probability of the equipment restarting due to high temperature is greatly reduced.

[0072] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification. [[ID=,10]]

[0073] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0074] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving industrial chiller, comprising a chassis (1) and a chiller unit (2) installed inside the chassis (1). The chiller unit (2) includes an evaporator chamber and a condenser chamber, and is characterized in that: A valve pipe is used to connect the evaporator chamber and the condenser chamber. It also includes two water tanks, a refrigerant heat dissipation fin group (3), a water-cooled heat dissipation fin group (4), and a heat insulation component (5) installed inside the chassis (1). The heat insulation component (5) is used to isolate the heat transfer between the two water tanks; The refrigerant heat dissipation fin group (3) is used to circulate the refrigerant of the chiller (2); Both groups of water-cooled heat dissipation fin groups (4) are used to circulate the cooling water inside the condenser chamber of the chiller (2); The two water tanks are divided into a warm water tank (6) and an ice water tank (7). The warm water tank (6) and the ice water tank (7) are respectively connected to the condenser chamber of the chiller (2) and the evaporator chamber of the chiller (2). The warm water tank (6) can discharge the water to be cooled into the evaporator chamber, and the evaporator chamber can discharge the cooled water into the ice water tank (7) for storage; A part of the water in the warm water tank (6) can be transferred to the condenser chamber to cooperate with the water-cooled heat dissipation fin group (4) to cool the internal condenser copper pipe. The warm water tank (6) can also circulate all the water inside it to the condenser chamber, and then use the water-cooled heat dissipation fin group (4) to cool it by air, and store it in the ice water tank (7) after cooling.

2. The energy-saving industrial chiller according to claim 1, wherein: There are two groups of the water-cooled heat dissipation fin groups (4), which are distributed in a V shape on the top of the chassis (1) and fixed to the chassis (1). There is one group of the refrigerant heat dissipation fin group (3), which is located between the bottoms of the two water-cooled heat dissipation fin groups (4) and fixed to the chassis (1). The vertically upward air flow can act on the two water-cooled heat dissipation fin groups (4) and one refrigerant heat dissipation fin group (3) at one time.

3. The energy-saving industrial chiller according to claim 2, wherein: Both the circulating water outlet and the inlet of the water-cooled heat dissipation fin group (4) are connected to the inside of the condenser chamber of the chiller (2) by a valve and pump water pipe A (8).

4. The energy-saving industrial chiller according to claim 3, characterized in that: Both the warm water tank (6) and the ice water tank (7) are connected to the condenser chamber of the chiller (2) by a valve and pump water pipe B (9). Both the warm water tank (6) and the ice water tank (7) are connected to the inside of the evaporator chamber of the chiller (2) by a valve and pump water pipe C (10).

5. The energy-saving industrial chiller according to claim 4, wherein: The heat insulation component (5) includes two front and rear heat insulation boards (11) and an intermediate heat insulation board (12). The front and rear heat insulation boards (11) are attached to the inner wall of the chassis (1), and the intermediate heat insulation board (12) is located between the two front and rear heat insulation boards (11) and installed between the two water tanks.

6. The energy-saving industrial chiller according to claim 1, wherein: It also includes a fan (13) installed above the chassis (1) for cooling the water-cooled heat dissipation fin group (4) and the refrigerant heat dissipation fin group (3).

7. The energy-saving industrial water chiller according to claim 1, wherein: Pump water pipes (14) are installed at the upper ends of the water tanks, and the pump water pipes (14) all extend outside the chassis (1).

8. The energy-saving industrial water chiller according to claim 1, wherein: Heat dissipation holes (15) are provided on the side walls of the chassis (1).

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