Energy-saving industrial water chiller

Abstract

The invention provides an energy-saving industrial cooling-water machine, and relates to the field of industrial energy-saving cooling-water machines. The energy-saving industrial water chiller comprises a machine case and a water chiller unit installed in the machine case, the water chiller unit comprises an evaporator chamber and a condenser chamber, the evaporator chamber and the condenser chamber are communicated through a valve pipe, and the energy-saving industrial water chiller further comprises two water tanks, a refrigerant heat dissipation fin set, a water-cooling heat dissipation fin set and a heat preservation assembly which are installed in the machine case. The heat preservation assembly is used for isolating heat between the two water tanks. According to the energy-saving industrial cooling-water machine, return water obtained after heat exchange can enter the condenser chamber from the warm water tank to cool the refrigerant copper pipe, then is pumped to the water-cooling heat dissipation fin set to be subjected to air cooling, and finally enters the evaporator chamber through the valve pipe to be subjected to cooling treatment; therefore, when the evaporator chamber is cooled, the compressor does not need to keep full-power operation, only the load of the fan is increased, and the load of the compressor is not increased.

Description

Technical Field

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

[0002] Industrial chillers are a type of chillers. Chillers can be divided into air-cooled chillers and water-cooled chillers. They are cooling equipment that can provide constant temperature, constant flow, and constant pressure. Chillers are divided into low-temperature chillers and normal-temperature chillers in terms of temperature control. Normal temperature is generally controlled within the range of 0 degrees to 35 degrees, and low-temperature chillers are generally controlled within the range of 0 degrees to minus 45 degrees. The principle of the chiller is to inject a certain amount of water into the internal water tank of the machine, cool the water through the chiller refrigeration system, and then the water pump inside the machine injects low-temperature frozen water into the equipment that needs to be cooled. The frozen water takes away the heat inside the machine and returns the high-temperature hot water to the water tank for cooling. In this way, the cooling is circulated and exchanged to achieve the effect of cooling the equipment. With the continuous development of the chiller industry, it has been widely used in all walks of life.

[0003] At present, the refrigerant circulation system of the chiller is that the liquid refrigerant in the evaporator absorbs the heat in the water and begins to evaporate. Finally, 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 a low-temperature and low-pressure refrigerant and enters the evaporator, completing the refrigerant circulation process.

[0004] In the traditional process, the return water of heat exchange directly enters the evaporator for cooling. Since the return water temperature of heat exchange is very high, directly cooling the return water to a certain degree will consume a lot of refrigerant, and the cooling time is long, and the whole process is energy-intensive. In addition, in the autumn and winter seasons, the return water temperature of heat exchange is low, and frequently starting the compressor will cause a certain degree of damage to 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 comprising an evaporator chamber and a condenser chamber, the evaporator chamber and the condenser chamber are connected by a valve pipe, and also comprising two water tanks, a refrigerant heat dissipation fin group, a water-cooled heat dissipation fin group and a heat preservation component installed inside the chassis, the heat preservation component is used to isolate the heat between the two water tanks from being mutually connected; The refrigerant heat dissipation fin group is used for circulating the refrigerant of the chiller; Both sets of water-cooled heat sink fins are used to circulate cooling water inside the condenser chamber of the chiller; 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 of the chiller and the evaporator chamber of the chiller. The warm water tank 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 for storage; 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 the complete 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.

[0007] 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.

[0008] Preferably, both the circulating water outlet and the inlet of the water-cooled heat dissipation fin group are connected to the inside of the condenser chamber of the chiller through a valve and pump water pipe A.

[0009] Preferably, both the warm water tank and the ice water tank are connected to the condenser chamber of the 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 chiller through a valve and pump water pipe C.

[0010] Preferably, the heat preservation component includes two front and rear heat preservation plates and an intermediate heat preservation plate. The front and rear heat preservation plates are attached to the inner wall of the chassis, and the intermediate heat preservation plate is located between the two front and rear heat preservation plates and installed between the two water tanks.

[0011] 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.

[0012] Preferably, pump water pipes are installed at the upper ends of the water tanks, and the pump water pipes all extend outside the chassis.

[0013] Preferably, heat dissipation holes are provided on the side walls of the chassis.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 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 pipe, and then be pumped to the water-cooled heat dissipation fin group for air-cooling, and finally enter the evaporator chamber through the valve pipe for cooling treatment. Since the return water has undergone air-cooling circulation, 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.

[0015] This energy-saving industrial chiller has an evaporator chamber that can cool the cooling water entering it and transfer it to an ice water tank. The warm water after cooling 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 the overall temperature of the cooling water will not become higher during long-term use, resulting in an increase in the load of the chiller.

[0016] In this energy-saving industrial chiller, when the outside 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-cooling. The cooled return water is stored in the ice water tank for temporary use.

[0017] This energy-saving industrial chiller can use a part of the water in the warm water tank to enter the condenser chamber, cooperate with the water-cooled heat dissipation fin group for air-cooling, and finally cool the refrigerant that needs 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. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a sectional view of the structure of the present invention; Figure 3 It is a side view of the internal structure of the present invention; Figure 4 It is a diagram of the internal structure of the chassis of the present invention; Figure 5 It is another side view of the internal structure of the chassis of the present invention; Figure 6 It is a structural diagram of the chiller and water tank of the present invention; Figure 7 It is a structural diagram of the chiller of the present invention.

[0019] 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. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the 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.

[0021] 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, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] In the present application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should 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 communication inside 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.

[0023] 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 specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the technical solutions between 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 is contradictory 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.

[0024] As Figures 1-7 shown, an energy-saving industrial water chiller includes a chassis 1 and a water chiller unit 2 installed inside the chassis 1. The water chiller unit 2 includes an evaporator chamber and a condenser chamber, and the evaporator chamber and the condenser chamber are connected and communicated by valve pipes. 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 water chiller unit 2; Both groups of water-cooled heat dissipation fin groups 4 are used to circulate the cooling water inside the condenser chamber of the water chiller unit 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 and the evaporator chamber of the water 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; 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 air-cool it, and store it in the ice water tank 7 after cooling.

[0025] 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: Cooling: Control the cooling water temperature within a set range (usually 5°C to 35°C).

[0026] Temperature constancy: Maintain the temperature stability of the process.

[0027] Energy saving: Reduce energy consumption through an efficient refrigeration system.

[0028] Generally, the core inside an industrial chiller is the chiller unit 2, which contains 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, have high efficiency but require a supporting water system, and are suitable for large industrial scenarios).

[0029] In the evaporator chamber, the liquid refrigerant absorbs the heat of the cooling water and evaporates into a gas, reducing the water temperature.

[0030] In the condenser chamber, the high-temperature and high-pressure refrigerant is cooled and condensed into a liquid through air / water cooling.

[0031] The chiller unit 2 also includes an expansion valve: the liquid refrigerant is depressurized and then re-enters the evaporator to cycle the refrigeration.

[0032] The refrigeration formula is:

[0033] 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 also an electric control valve. After sending an electric signal, the electric control valve can be controlled to open and close and can also control the flow rate, so as to control the communication between the space inside the condenser chamber and the space inside the evaporator chamber.

[0034] 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.

[0035] 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 the refrigerant.

[0036] When the warm water tank 6 and the ice water tank 7 are actually used, the cooling water inside is generally pure water, which is used to supply water to the heating equipment in the circulating tank and does not scale or rust easily.

[0037] In an alternative embodiment, there are two sets 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 set 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 set of refrigerant heat dissipation fin groups 3 at one time.

[0038] In this embodiment, the water-cooled heat dissipation fin groups 4 distributed in a V shape are on the top and the refrigerant heat dissipation fin groups 3 are on the bottom, which can prevent the heat generated by the water-cooled heat dissipation fin groups 4 from acting on the refrigerant heat dissipation fin groups 3. The heat of the three can be taken away together by the vertically upward air flow, and the vertically upward air flow and the position distribution of the three can maximize the avoidance of heat intermixing.

[0039] In an alternative embodiment, 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 through the valve and pump water pipe A8.

[0040] 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 after being 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.

[0041] In an alternative embodiment, both the warm water tank 6 and the ice water tank 7 are connected to the condenser chamber of the chiller 2 through the valve and pump water pipe B9, and 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 through the valve and pump water pipe C10.

[0042] In this embodiment, when connected to 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).

[0043] In an alternative embodiment, the heat insulation assembly 5 includes two front and rear heat insulation plates 11 and one middle heat insulation plate 12. The front and rear heat insulation plates 11 are attached to the inner wall of the chassis 1, and the middle heat insulation plate 12 is located between the two front and rear heat insulation plates 11 and installed between the two water tanks.

[0044] In this embodiment, the front and rear heat insulation plates 11 and the middle heat insulation plate 12 are combined into an I-shaped state to insulate the heat between the two water tanks.

[0045] In an alternative embodiment, a fan 13 is further included, which is installed above the chassis 1 and used to cool the water-cooled heat dissipation fin group 4 and the refrigerant heat dissipation fin group 3.

[0046] In this embodiment, the fan 13 is an efficient and low-noise condensing fan, with a large air volume and low noise.

[0047] In an alternative 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.

[0048] 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 cooling the devices, and the pump water pipe 14 connected to the warm water tank 6 is used for returning water.

[0049] In an alternative embodiment, heat dissipation holes 15 are provided on the side walls of the chassis 1.

[0050] In this embodiment, the heat dissipation holes 15 can dissipate the heat generated by the internal working components of the chassis 1.

[0051] 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.

[0052] If the temperature of the returned water after heat exchange is too high, the returned water after heat exchange can first enter the condenser chamber from the warm water tank 6 to cool the refrigerant copper pipe, 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 returned 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.

[0053] When the external temperature is relatively low, the returned water can directly enter the condenser chamber and then be air-cooled by the water-cooled heat dissipation fin group 4. The returned water after cooling is stored in the ice water tank 7 for temporary use.

[0054] 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 large heat absorption effect can be exerted in the evaporator chamber, and the probability of the equipment restarting due to high temperature is greatly reduced.

[0055] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. 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 expressions 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.

[0056] In addition, the technical solutions between 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.

[0057] 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) comprising an evaporator chamber and a condenser chamber, 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 airflow 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: The circulating water outlet and inlet of the water-cooled heat dissipation fin group (4) are both 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, wherein: 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), and 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, characterized in that: The heat insulation component (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 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 chiller according to claim 1, characterized in that: 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 chiller according to claim 1, wherein: Heat dissipation holes (15) are provided on the side walls of the chassis (1).

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