Ice water system control method, ice water system and control device

Abstract

The present invention provides a chilled water system control method, chilled water system and control device, which relates to the field of refrigeration water technology, and solves the technical problem that the traditional low-temperature chilled water system for dairy products in the prior art has an internal circulation water tank and an external circulation water tank, and the chilled water is stored in the external circulation water tank, causing the water temperature to rise. The method includes: detecting the drainage temperature of the host of the chilled water system; judging whether the drainage temperature of the host is not greater than the preset water outlet temperature value T 设 ; If yes, the host drain is controlled to be directed to the end of the ice water system; if not, the ice water storage tank of the ice water system is controlled to supply water to the end. That is, when the host drain temperature is not greater than the preset water outlet temperature value of 1.5℃, the host drain is controlled to be directly directed to the end of the ice water system, eliminating the external circulation water tank in the prior art, and adopting the method of direct supply of ice water, which avoids the storage of ice water in the external circulation water tank in the prior art, causing the water temperature to rise, and also solves the problem of large area occupied by the external circulation water tank.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration water, and in particular to an ice water system control method, an ice water system and a control device suitable for the dairy industry. Background Art

[0002] As the quality of life of the people improves, the dairy industry has also developed. Unlike general central air-conditioning systems, the air-conditioning systems used in the dairy industry have strict requirements on water temperature, and the water temperature supplied to the end must be stable at 2°C.

[0003] Conventional low-temperature chilled water systems for dairy products have internal and external circulation water tanks. The water produced by the chiller is qualified if the temperature is less than 0.5℃, and unqualified if it is greater than 1.5℃. Qualified chilled water enters the external circulation water tank and is then sent to the terminal, while unqualified water enters the internal circulation water tank, mixes with the chilled water return water, and then re-enters the chiller.

[0004] The applicant has found that the prior art has at least the following technical problems:

[0005] The traditional low-temperature chilled water system for dairy products has an internal circulation water tank and an external circulation water tank. The external circulation water tank has the disadvantages of occupying a large area and the temperature of the water discharged from the chiller increases in the external circulation water tank. Summary of the invention

[0006] The purpose of the present invention is to provide an ice water system control method, an ice water system and a control device, which solves the technical problem that the traditional low-temperature ice water system for dairy products in the prior art has an inner circulation water tank and an outer circulation water tank, and the ice water is stored in the outer circulation water tank, causing the water temperature to rise. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a chilled water system control method, comprising the following steps: detecting the host drainage temperature of the chilled water system; determining whether the host drainage temperature is not greater than a preset water outlet temperature value T 设 ; If so, the host drainage is controlled to be directed to the end of the ice water system; if not, the ice water storage tank of the ice water system is controlled to supply water to the end.

[0009] Furthermore, the control of directing the host drainage to the end of the ice water system includes the following contents: detecting the liquid level of water in the ice water storage tank; controlling the load rate of the host of the ice water system according to the liquid level of water in the ice water storage tank to realize different water supply modes.

[0010] Furthermore, the present invention includes the following contents: when it is detected that there is no water in the ice water storage tank, the water tank water storage mode is operated; when it is detected that the water level in the ice water storage tank is not less than A%, the water tank water storage mode is controlled to exit; the water tank water storage mode is to control the ice water system host to operate at a load rate of not less than a%, and to control the host to drain water to the terminal and the ice water storage tank at the same time.

[0011] Furthermore, when it is detected that the water level in the ice water storage tank is not less than 30%, the control is to exit the water tank water storage mode; the water tank water storage mode is to control the ice water system host to operate at a load rate of not less than 90%.

[0012] Furthermore, the control of the main engine drainage to be directed to the end and the ice water storage tank at the same time is specifically as follows: the opening of the valve body on the water pipe that controls the main engine drainage to be directed to the end is not less than 90%; the opening of the valve body on the water pipe that controls the main engine drainage to be directed to the ice water storage tank is 60% to 80%.

[0013] Furthermore, the following contents are included: when exiting the water tank storage mode, the control switches to the general refrigeration mode; when it is detected that the water level in the ice water storage tank is not less than B%, the control exits the general refrigeration mode; the general refrigeration mode is to control the ice water system host to operate at a load rate of b%, and control the ice water storage tank to supply water to the terminal or control the drainage part of the host to be directed to the ice water storage tank according to the demand of the terminal; wherein, B>A; a>b.

[0014] Furthermore, when it is detected that the water level in the ice water storage tank is not less than 90%, the general refrigeration mode is controlled to be exited; the general refrigeration mode is to control the main unit of the ice water system to operate at a load rate of 60% to 80%.

[0015] Furthermore, the following contents are included: detecting the return water temperature of the host of the ice water system, and judging whether the ice water storage tank is the terminal water supply or the host drainage part is directed to the ice water storage tank according to the return water temperature of the host of the ice water system.

[0016] Further, it includes the following contents: when exiting the general refrigeration mode, the control switches to the low-load refrigeration mode; when the operating conditions of the low-load refrigeration mode are not met, the control switches to the general refrigeration mode; the low-load refrigeration mode controls the main unit of the ice water system to operate at a load rate of c%, and controls the water flow from the main unit drainage to the end according to the demand of the end, and controls the water flow from the ice water storage tank to the end; wherein, b>c.

[0017] Furthermore, the low-load refrigeration mode operation condition is not met, specifically including the following: when it is detected that the water level in the ice water storage tank is not greater than 10% or when it is detected that the water temperature of the ice water storage tank is not less than the preset temperature value T 设 hour.

[0018] Furthermore, the low-load refrigeration mode is to control the host of the ice water system to operate at a load rate of 5% to 10%.

[0019] Furthermore, the present invention includes the following contents: detecting the return water temperature of the host of the ice water system, controlling the water flow of the host drainage to the end according to the return water temperature of the host of the ice water system, and controlling the water flow of the ice water storage tank to the end.

[0020] Further, the judging whether the host drainage temperature is not greater than the preset water outlet temperature value, if not, controlling the ice water storage tank of the ice water system to supply water to the terminal, specifically includes the following contents: judging whether the host drainage temperature is not greater than the preset water outlet temperature value; if not, controlling the ice water system host drainage to flow back to the ice water system host for re-refrigeration; judging whether there is water in the ice water storage tank; if so, controlling the ice water storage tank to supply water to the terminal to run the water replenishment mode; when the host drainage temperature is not greater than the preset water outlet temperature value T 设 , the control exits the water replenishment mode.

[0021] The present invention provides an ice water system for implementing the control method, comprising an ice water system main unit, an ice water storage tank, a control valve and a driving pump, wherein the drainage pipe of the ice water system main unit is respectively connected to the ice water storage tank and the end of the ice water system, the ice water storage tank is connected to the end through a pipeline, and the control valve and the driving pump are arranged on the pipeline of the ice water system.

[0022] Furthermore, the ice water system also includes a return water pipeline, on which a return water valve and a return water pump are arranged. The return water pipeline is connected to the drain pipe and the water inlet pipe of the ice water system main unit, and the water discharged from the ice water system main unit can flow to the ice water system main unit through the return water pipeline.

[0023] The present invention provides a control device, comprising: a detection module for detecting the temperature of the host water discharge of the ice water system; a temperature judgment module for judging whether the host water discharge temperature is not greater than a preset water outlet temperature value T 设 ; Valve body control module, used to control the valve body to change the flow direction of water in the system.

[0024] Furthermore, it also includes: a load rate control module, which is used to control the load rate of the host of the ice water system.

[0025] The present invention provides a chilled water system control method, comprising the following steps: detecting the host drainage temperature of the chilled water system; determining whether the host drainage temperature is not greater than a preset water outlet temperature value T 设 ; If so, the host drainage is controlled to be directed to the end of the ice water system; if not, the ice water storage tank of the ice water system is controlled to supply water to the end. That is, when the host drainage temperature is not greater than the preset water outlet temperature value of 1.5°C, the host drainage is controlled to be directly directed to the end of the ice water system, eliminating the external circulation water tank in the prior art, and adopting the method of direct supply of ice water, which avoids the accumulation of ice water in the external circulation water tank in the prior art, causing the water temperature to rise, and also solves the problem of large floor space occupied by the external circulation water tank. In addition, the direct supply of ice water can provide higher quality ice water to the end. When it is judged that the host drainage temperature is greater than the preset water outlet temperature value of 1.5°C, at this time, check whether the water supply conditions of the ice water storage tank are met. If so, the ice water storage tank of the ice water system can supply water to the end to make the system run stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 is a schematic diagram of an ice water system provided by an embodiment of the present invention;

[0028] Figure 2 It is a flow chart of a chilled water system control method provided by an embodiment of the present invention.

[0029] In the figure, 1- chilled water system host; 2- chilled water storage tank; 3- chilled water pump; 4- cold water system end; 5- liquid level sensor; 6- host drainage temperature sensor; 7- water storage tank outlet water temperature sensor; 8- chilled water return temperature sensor; 9- return water pump; 10- water supply electric valve; 11- water tank inlet electric valve; 12- water tank outlet electric valve; 13- return water valve. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0031] Conventional low-temperature chilled water systems for dairy products are equipped with an inner circulation water tank and an outer circulation water tank. The water produced by the chiller is qualified if its temperature is less than 0.5°C, and unqualified if it is greater than 1.5°C. Qualified chilled water enters the outer circulation water tank and is then sent to the terminal, while unqualified water enters the inner circulation water tank, is mixed with the chilled water return water, and then re-enters the chiller. Conventional low-temperature chilled water systems for dairy products are equipped with an inner circulation water tank and an outer circulation water tank. The chilled water is stored in the outer circulation water tank, causing the water temperature to rise. Based on this, the present invention provides a chilled water system control method, including the following contents: detecting the drainage temperature of the host 1 of the chilled water system; judging whether the host drainage temperature is not greater than the preset water outlet temperature value T 设 If yes, the host drain is controlled to be directed to the end 4 of the ice water system; if no, the ice water storage tank 2 of the ice water system is controlled to supply water to the end. That is, when the host drain temperature is not greater than the preset water outlet temperature value T 设 (T 设 When the temperature is usually 1.5℃), the host is controlled to drain water directly to the end 4 of the chilled water system, eliminating the external circulation water tank in the prior art and adopting the method of direct chilled water supply, which avoids the increase of water temperature due to the accumulation of chilled water in the external circulation water tank in the prior art, and also solves the problem of large area occupied by the external circulation water tank. In addition, the quality of chilled water supplied to the end is higher by adopting the method of direct chilled water supply.

[0032] When the host drainage temperature is judged to be greater than the preset water outlet temperature value T 设 At this time, see whether the water supply condition of the ice water storage tank 2 is met. If it is met, the ice water storage tank 2 of the ice water system can supply water to the end to make the system run stably.

[0033] Controlling the main engine to drain water to the end 4 of the ice water system includes the following: detecting the liquid level of water in the ice water storage tank 2; controlling the load rate of the ice water system main engine 1 according to the liquid level of water in the ice water storage tank 2 to realize different water supply modes. When the main engine drains water and needs to supply water to the end and the ice water storage tank 2 at the same time, the load rate of the ice water system main engine 1 can be appropriately controlled to increase; when the main engine drains water and the ice water storage tank 2 supplies water to the end at the same time, the load rate of the ice water system main engine 1 can be appropriately controlled to decrease, so as to realize higher energy efficiency and more stable operation of the dairy ice water system.

[0034] Regarding controlling the load rate of the ice water system host 1 according to the liquid level of water in the ice water storage tank 2 to realize different water supply modes, the following is explained:

[0035] When it is detected that there is no water in the ice water storage tank 2, the water tank water storage mode is operated; when it is detected that the water level in the ice water storage tank 2 is not less than A%, the water tank water storage mode is controlled to exit; the water tank water storage mode is to control the ice water system host 1 to operate at a load rate of not less than a%, and control the host to drain water to the terminal and the ice water storage tank 2 at the same time.

[0036] A specific example is as follows: when it is detected that there is no water in the ice water storage tank 2, the water tank water storage mode is run; when it is detected that the water level in the ice water storage tank 2 is not less than 30%, the water tank water storage mode is controlled to exit. The water tank water storage mode is to control the ice water system host 1 to operate at a load rate of not less than 90%, and control the host to drain water to the terminal and the ice water storage tank 2 at the same time, so that the ice water system host 1 can be controlled to operate at a 100% load rate, so as to achieve the premise of meeting the terminal demand and quickly replenishing water to the ice water storage tank 2.

[0037] The control main engine drain is directed to the terminal and the ice water storage tank 2 at the same time, specifically as follows: The control main engine drain is directed to the valve body on the water pipe at the terminal ( Figure 1 The opening of the water supply electric valve 10) is not less than 90%, and the opening of the water supply electric valve 10 can be controlled to be 100%; the valve body ( Figure 1 The opening degree of the water tank water inlet electric valve 11) is 60% to 80%. For example, the opening degree of the water tank water inlet electric valve 11 can be controlled to be 70%.

[0038] When exiting the water tank storage mode, the control switches to the general refrigeration mode; when it is detected that the water level in the ice water storage tank 2 is not less than B%, the control exits the general refrigeration mode, wherein B>A; the general refrigeration mode is to control the ice water system host 1 to operate at a load rate of b%, and control the ice water storage tank 2 to supply water to the terminal or control the host drainage part to be diverted to the ice water storage tank 2 according to the demand of the terminal; wherein a>b.

[0039] Specific examples are as follows: when exiting the water tank water storage mode, the control switches to the general refrigeration mode; when the water level in the ice water storage tank 2 is detected to be not less than 90%, the control exits the general refrigeration mode; the general refrigeration mode is to control the ice water system host 1 to operate at a load rate of 60% to 80%, and control the ice water storage tank 2 to supply water to the terminal or control the host drainage part to be directed to the ice water storage tank 2 according to the demand of the terminal. That is, when the demand for ice water at the terminal is small, the surplus ice water enters the ice water storage tank 2, and the control host drainage part is directed to the ice water storage tank 2; when the demand for ice water at the terminal is large, water is taken from the ice water storage tank 2, and the control ice water storage tank 2 is controlled to supply water to the terminal.

[0040] Regarding the detection of the return water temperature of the host of the chilled water system, it is judged that the chilled water storage tank is the terminal water supply or the host drainage part is led to the chilled water storage tank according to the return water temperature of the host of the chilled water system. That is, when the return water temperature of the host of the chilled water system is too high, it is judged that the demand for chilled water at the terminal is large; when the return water temperature of the host of the chilled water system is too low, it is judged that the demand for chilled water at the terminal is small.

[0041] When exiting the general refrigeration mode, the control switches to the low-load refrigeration mode; when the operating conditions of the low-load refrigeration mode are not met, the control switches to the general refrigeration mode; the low-load refrigeration mode controls the ice water system host 1 to operate at a load rate of c%, and controls the water flow from the host drainage to the end according to the demand of the end, and controls the water flow from the ice water storage tank 2 to the end; wherein, b>c.

[0042] When the general cooling mode is running, when it is detected that the water level in the ice water storage tank 2 is not less than 90%, it means that the ice water required at the end of the system is small, and the control switches to the low-load cooling mode to reduce the load rate of the ice water system host 1.

[0043] Regarding the low-load refrigeration mode, the ice water system host 1 can be controlled to operate at a load rate of 5% to 10%, and the water flow from the host drainage to the end can be controlled according to the demand of the end, and the water flow from the ice water storage tank 2 to the end can be controlled.

[0044] Regarding the non-satisfaction of the low-load cooling mode operation conditions, the specific contents include the following: when it is detected that there is water in the ice water storage tank 2 but the water level is not greater than 10% (of course, the value here is not limited to only 10%, it can also be other values ​​except 10%), the control is switched to the general cooling mode; or, the non-satisfaction of the low-load cooling mode operation conditions can also be as follows: when it is detected that the water temperature of the ice water storage tank 2 is not less than the preset temperature value T 设 (1.5℃), the control switches to normal cooling mode.

[0045] Detect the return water temperature of the host of the ice water system, and control the water flow from the host drainage to the end according to the return water temperature of the host of the ice water system, and control the water flow from the ice water storage tank to the end.

[0046] Regarding judging whether the host drainage temperature is not greater than the preset water outlet temperature value, if not, the ice water storage tank 2 of the ice water system is controlled to supply water to the terminal, specifically including the following contents:

[0047] Determine whether the host water temperature is not greater than the preset water outlet temperature value T 设 (1.5℃); if not, control the water discharge of the chilled water system host 1 to return to the chilled water system host 1 for re-refrigeration; determine whether there is water in the chilled water storage tank 2; if it is determined that there is water in the chilled water storage tank 2, control the chilled water storage tank 2 to supply water to the terminal to run the water replenishment mode; when the host drainage temperature is not greater than the preset water outlet temperature value T 设 (1.5℃), the control exits the water replenishment mode.

[0048] When the host discharge temperature is greater than the preset water outlet temperature value T 设When it is determined that there is no water in the ice water storage tank 2 (usually when the system is just turned on), the reflux mode is operated, that is, the water discharged from the ice water system host 1 is controlled to flow back to the ice water system host 1 for re-refrigeration; when the host water discharge temperature is not greater than the preset water outlet temperature value T 设 (1.5℃), the control exits the reflux mode.

[0049] A chilled water system for implementing a control method comprises a chilled water system main unit 1, a chilled water storage tank 2, a control valve and a driving pump, wherein the drainage pipe of the chilled water system main unit 1 is respectively connected to the chilled water storage tank 2 and the end of the chilled water system, the chilled water storage tank 2 is connected to the end through a pipeline, and the control valve and the driving pump are arranged on the pipeline of the chilled water system. That is, when the drainage temperature of the chilled water system main unit 1 is not greater than the preset water outlet temperature value T 设 (T 设 When the temperature is usually 1.5℃, the host drain is directly directed to the end 4 of the ice water system, eliminating the external circulation water tank in the prior art and adopting the method of direct supply of ice water. This avoids the problem of ice water being stored in the external circulation water tank in the prior art, which causes the water temperature to rise. It also solves the problem of the large area occupied by the external circulation water tank. In addition, the method of direct supply of ice water provides a higher quality of ice water supplied to the end. When it is judged that the host drain temperature is greater than the preset water outlet temperature value T 设 At this time, see whether the water supply condition of the ice water storage tank 2 is met. If it is met, the ice water storage tank 2 of the ice water system can supply water to the end to make the system run stably.

[0050] The ice water system also includes a return water pipeline, on which a return water valve 13 and a return water pump 9 are arranged. The return water pipeline connects the drain pipe and the water inlet pipe of the ice water system host 1, and the water discharged from the ice water system host 1 can flow to the ice water system host 1 through the return water pipeline.

[0051] See also Figure 1 , illustrating an embodiment of an ice water system:

[0052] The drain pipe of the ice water system main unit 1 is divided into two branches, one branch is connected to the ice water storage tank 2 and a water tank water inlet electric valve 11 is arranged on the water pipe, and the other branch is connected to the ice water system terminal 4 and a water supply electric valve 10 is arranged on the water pipe, a chilled water pump 4 is arranged on the water inlet side of the ice water system terminal 4, the drain pipe of the ice water storage tank 2 is connected to the water pipe between the water supply electric valve 10 and the chilled water pump 4, and a water tank water outlet electric valve 12 is arranged on the drain side of the ice water storage tank 2. Figure 1The figure also shows the return water pipeline, on which a return water valve 13 and a return water pump 9 are arranged. An ice water supply temperature sensor 6 is arranged on the drainage side of the ice water system main unit 1, a water tank outlet temperature sensor is arranged on the drainage side of the ice water storage tank 2, and a liquid level sensor 5 is arranged in the ice water storage tank 2. The liquid level sensor 5 is used to detect the liquid level in the ice water storage tank 2. An ice water return water temperature sensor is arranged on the return water side of the ice water system main unit 1.

[0053] In the description of the control method above, the system operation reflux mode, water replenishment mode, water tank storage mode, general cooling mode and low-load cooling mode are mentioned. The switch status of the solenoid valve in each mode is controlled as follows:

[0054] Reflux mode: unqualified ice water is produced when the machine is just started. At this time, the liquid level sensor 5 detects that there is no ice water in the ice water storage tank 2, then the water supply electric valve 10, the water tank water inlet electric valve 11, the water tank water outlet electric valve 12 and the chilled water pump 3 are closed, and the return valve 13 and the return pump 9 are opened, and the unqualified ice water flows back to the ice water system host 1; when the ice water supply temperature sensor 6 detects that the outlet water temperature T of the ice water system host 1 is ≤1.5℃, the system exits the reflux mode.

[0055] Water replenishment mode (unqualified ice water is generated during system operation): At this time, the liquid level sensor 5 detects that there is ice water in the ice water storage tank 2, then the water supply electric valve 10, the water tank water inlet electric valve 11 and the return valve 13 are closed, and the water tank water outlet electric valve 12 is opened, and the ice water in the ice water storage tank 2 is delivered to the end by the chilled water pump 3; when the ice water supply temperature sensor 6 detects that the outlet water temperature T of the ice water system host 1 is ≤1.5℃, the system exits the water replenishment mode.

[0056] When the chilled water supply temperature sensor 6 detects that the outlet water temperature T of the chilled water system host 1 is less than or equal to 1.5°C, the return valve 13 is closed and the system enters the chilled water qualified mode. This mode is further divided into the following three operating modes, namely, the water tank storage mode, the general cooling mode and the low-load cooling mode:

[0057] Water tank water storage mode: When the ice water supply temperature sensor 6 detects that the outlet water temperature T of the ice water system host 1 is ≤1.5℃, there is no ice water in the ice water storage tank 2, the ice water system host 1 operates at 100% load rate, the water supply electric valve 10 is fully open, the water tank water inlet electric valve 11 is 70% open, and the water tank water outlet electric valve 12 is closed. Part of the ice water is directly supplied to the ice water system terminal 4 by the chilled water pump 3, and part of the ice water enters the ice water storage tank 2. When the liquid level sensor 5 detects that the liquid level h1 of the ice water storage tank 2 is ≥30%, the water tank water storage mode is exited.

[0058] General refrigeration mode: After the system exits the water tank water storage mode, it enters the general refrigeration mode. In this mode, the main unit 1 of the ice water system operates in the high-efficiency range at a load rate of 60% to 80%, the water supply electric valve 10 is fully open, and the ice water return temperature sensor 8 controls the opening of the water tank inlet electric valve 11 and the water tank outlet electric valve 12 according to the return water temperature. In this mode, when the demand for ice water at the end is small (the return water temperature detected by the ice water return temperature sensor 8 is low), the surplus ice water enters the ice water storage tank 2; when the demand for ice water at the end is large (the return water temperature detected by the ice water return temperature sensor 8 is high), water is taken from the ice water storage tank 2. When the liquid level sensor 5 detects that the liquid level h2 in the ice water storage tank 2 is ≥90%, the general refrigeration mode is exited.

[0059] Low-load refrigeration mode: When the liquid level h2 of the ice water storage tank 2 is ≥90%, the system exits the general refrigeration mode, indicating that the amount of ice water required at the end of the system is small, and the system enters the low-load refrigeration mode. At this time, the main unit 1 of the ice water system operates at a load rate 5% to 10% lower than the end load, the water tank water inlet electric valve 11 is closed, and the ice water return water temperature sensor 8 adjusts the opening of the water supply electric valve 10 and the water tank water outlet electric valve 12 according to the return water temperature control. The outlet water of the main unit 1 of the ice water system and the outlet water of the ice water storage tank 2 are mixed and sent to the end. When the water tank outlet water temperature sensor 7 detects that the outlet water temperature of the ice water storage tank 2 is ≥1.5℃, or when the liquid level sensor 5 detects that the liquid level h3 of the ice water storage tank 2 is ≤10%, the system switches from the low-load refrigeration mode to the general refrigeration mode.

[0060] A control device includes: a detection module for detecting the water discharge temperature of a host 1 of a chilled water system; a temperature judgment module for judging whether the host water discharge temperature is not greater than a preset water outlet temperature value T 设 ; Valve body control module, used to control the valve body to change the flow direction of water in the system.

[0061] The control device further comprises: a load rate control module for controlling the load rate of the host 1 of the ice water system.

[0062] Regarding the control device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the above-mentioned embodiments of the related method, and will not be elaborated here.

[0063] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for controlling an ice water system, characterized in that: Includes the following: Detect the main engine drainage temperature of the ice water system; Determine whether the host water temperature is not greater than the preset water outlet temperature value T 设 ; If yes, control the main engine to drain water to the end of the ice water system; If not, controlling the ice water storage tank of the ice water system to supply water to the end; The controlling of the main engine draining water to the end of the ice water system includes the following contents: Detecting the liquid level of water in the ice water storage tank; The load rate of the host of the ice water system is controlled according to the liquid level of water in the ice water storage tank to realize different water supply modes.

2. The ice water system control method according to claim 1, characterized in that: Includes the following: When it is detected that there is no water in the ice water storage tank, running the water tank water storage mode; When it is detected that the water level in the ice water storage tank is not less than A%, the water tank water storage mode is exited; The water tank water storage mode is to control the main unit of the ice water system to operate at a load rate of not less than a%, and to control the main unit to drain water to the terminal and the ice water storage tank at the same time; When it is detected that the water level in the ice water storage tank is not less than 30%, the control is to exit the water tank water storage mode; the water tank water storage mode is to control the ice water system host to operate at a load rate of not less than 90%.

3. The ice water system control method according to claim 2, characterized in that: The control of draining water from the host to the terminal and the ice water storage tank at the same time is as follows: The opening degree of the valve body on the water pipe controlling the main engine to drain water to the end is not less than 90%; The valve body opening degree on the water pipe that controls the main engine to drain water to the ice water storage tank is 60% to 80%.

4. The ice water system control method according to claim 2, characterized in that: Includes the following: When the water tank water storage mode is exited, the control switches to the general refrigeration mode; When it is detected that the water level in the ice water storage tank is not less than B%, the control is to exit the general refrigeration mode; The general refrigeration mode is to control the host of the ice water system to operate at a load rate of b%, and control the ice water storage tank to supply water to the terminal or control the drainage part of the host to be directed to the ice water storage tank according to the demand of the terminal; Among them, B>A; a>b; When it is detected that the water level in the ice water storage tank is not less than 90%, the control is to exit the general refrigeration mode; the general refrigeration mode is to control the main unit of the ice water system to operate at a load rate of 60% to 80%.

5. The ice water system control method according to claim 4, characterized in that: Includes the following: Detect the return water temperature of the host of the ice water system, and determine whether the ice water storage tank is used to supply water to the terminal or the drainage part of the host is directed to the ice water storage tank according to the return water temperature of the host of the ice water system.

6. The ice water system control method according to claim 4, characterized in that: Includes the following: When exiting the general cooling mode, the control switches to the low-load cooling mode; When the low-load refrigeration mode operating conditions are not met, control is switched to the general refrigeration mode; The low-load refrigeration mode is to control the host of the ice water system to operate at a load rate of c%, and control the water flow from the host drainage to the terminal and the water flow from the ice water storage tank to the terminal according to the demand of the terminal; Among them, b>c.

7. The ice water system control method according to claim 6, characterized in that: The low-load cooling mode operation condition is not met, specifically including the following: When it is detected that the water level in the ice water storage tank is not greater than 10% or when it is detected that the water temperature of the ice water storage tank is not less than the preset temperature value T 设 hour.

8. The ice water system control method according to claim 6, characterized in that: The low-load refrigeration mode is to control the host of the ice water system to operate at a load rate of 5% to 10%.

9. The ice water system control method according to claim 6, characterized in that: Includes the following: Detect the return water temperature of the host of the ice water system, and control the water flow from the host drainage to the end and the water flow from the ice water storage tank to the end according to the return water temperature of the host of the ice water system.

10. The ice water system control method according to claim 1, characterized in that: The determining whether the host drainage temperature is not greater than the preset water outlet temperature value, if not, controlling the ice water storage tank of the ice water system to supply water to the terminal, specifically includes the following contents: Determine whether the host water discharge temperature is not greater than the preset water outlet temperature value; If not, control the water discharge from the chilled water system host to flow back to the chilled water system host for re-refrigeration; Determining whether there is water in the ice water storage tank; If yes, controlling the ice water storage tank to supply water to the end to operate the water replenishment mode; When the host water discharge temperature is not greater than the preset water outlet temperature value T 设 , the control exits the water replenishment mode.

11. An ice water system implementing the control method according to any one of claims 1 to 10, characterized in that: It includes the main unit of the ice water system, the ice water storage tank, the control valve and the drive pump, among which: The drainage pipe of the host of the ice water system is respectively connected to the ice water storage tank and the end of the ice water system. The ice water storage tank is connected to the end through a pipeline. The pipeline of the ice water system is provided with the control valve and the driving pump.

12. The ice water system according to claim 11, characterized in that: The ice water system also includes a return water pipeline, on which a return water valve and a return water pump are arranged. The return water pipeline is connected to the drain pipe and the water inlet pipe of the ice water system host. The water discharged from the ice water system host can flow to the ice water system host through the return water pipeline.

13. A control device for an ice water system according to claim 11 or 12, characterized in that: include: Detection module, used to detect the discharge temperature of the host of the ice water system; The temperature judgment module is used to judge whether the host drainage temperature is not greater than the preset water outlet temperature value T 设 ; A valve control module is used to control the valve to change the flow direction of water in the system; The load rate control module is used to control the load rate of the host of the ice water system.

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