Refrigeration equipment with intelligent cleaning function and automatic cleaning method

Abstract

The present invention discloses a refrigeration device with intelligent cleaning function and an automatic cleaning method, the refrigeration device includes a heat exchanger, the heat exchanger includes a condenser and an evaporator, the refrigeration device also includes an automatic spraying device, the automatic spraying device includes a spraying mechanism, a water tank, a water pump and a water receiving tray, the spraying mechanism is arranged directly opposite to the heat exchanger, the water receiving tray is arranged below the heat exchanger, the water tank is arranged below the water receiving tray, the water tank is connected to the water receiving tray through a guide pipe, the water inlet end of the water pump is connected to the water tank, and the water outlet end is connected to the spraying mechanism through a rubber hose, the refrigeration device is also provided with a control unit, and the control unit is electrically connected to the water pump, the fan and the heat exchanger. The automatic cleaning method uses the automatic spraying device arranged inside the refrigeration device to clean the heat exchanger with condensed water, has the characteristics of simple operation and good cleaning effect, and greatly improves the heat exchange efficiency of the refrigeration device.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a refrigeration equipment with an intelligent cleaning function and an automatic cleaning method. Background Art

[0002] With the economic growth and the continuous improvement of people's living standards, refrigeration equipment plays an increasingly important role in our lives; refrigeration equipment has appeared in laboratories, warehouses, factories and other places; industrial refrigeration equipment, dryers and dehumidifiers have also been widely used.

[0003] The refrigeration system of most refrigeration equipment adopts air cooling, and the heat exchanger of the system is also air-cooled heat exchanger. Fin-tube heat exchanger is the most common. The heat exchange principle is: let the outside air pass through the heat sink of the heat exchanger, force convection heat exchange, exchange heat with the outside air, so that the heat is taken away by the outside air and returned to the atmosphere.

[0004] However, during the use of refrigeration equipment, the dust content in the air is high. If refrigeration equipment is used in power plants and woodworking workshops, the quality of the air treated by the forced convection heat exchange of the refrigeration system becomes a problem; if an air filter is installed, the filter will be easily blocked due to excessive dust and other air impurities accumulated during the operation of the refrigeration equipment for a long time. The workload of cleaning or replacing the filter requires manpower and material resources. If the air filter is not installed, the impurities in the air cannot be processed, and enter the heat exchanger of the equipment system, causing a large amount of impurities to accumulate on the surface of the direct heat exchanger and then block it, directly affecting the heat exchange efficiency of the refrigeration system of the refrigeration equipment. The accumulation of impurities for a long time will cause the heat exchanger to be scrapped and the refrigeration equipment cannot work normally. Therefore, there is an urgent need for a refrigeration equipment with intelligent cleaning function.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a refrigeration equipment with intelligent cleaning function and an automatic cleaning method, aiming to solve the problem in the prior art that the heat exchange efficiency of the refrigeration equipment is reduced or even scrapped after the refrigeration equipment accumulates dust and oil, and the defect that the condensed water cannot be utilized.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A refrigeration device with an intelligent cleaning function comprises a heat exchanger, wherein the heat exchanger comprises a condenser and an evaporator, wherein the refrigeration device further comprises an automatic spray device, wherein the automatic spray device comprises a spray mechanism, a water tank, a water pump and a water receiving tray, wherein the spray mechanism is used to clean the heat exchanger, wherein the water receiving tray is arranged below the heat exchanger, wherein the water tank is arranged below the water receiving tray, wherein the water tank is connected to the water receiving tray via a guide pipe, wherein the water inlet end of the water pump is connected to the water tank, and the water outlet end is connected to the spray mechanism via a rubber hose, wherein the refrigeration device is further provided with a control unit, wherein the control unit is electrically connected to the water pump, the fan and the heat exchanger.

[0009] In the refrigeration device with intelligent cleaning function, the spray mechanism is a plurality of spray pipes or spray plates provided with spray holes and arranged above the heat exchanger, and the opening direction of the spray holes faces the heat exchanger.

[0010] In the refrigeration equipment with intelligent cleaning function, the spray mechanism includes a transmission track and a spray pipe with transmission casters, and a driving motor for driving the spray pipe. The spray pipe can be slidably connected to the transmission track through the transmission casters. The spray pipe is provided with a plurality of high-pressure nozzles. The water inlet of the spray pipe is connected to the water outlet of the water pump through a rubber hose. The transmission track includes an upper track and a lower track arranged relatively parallel to each other, which are respectively arranged on the top and bottom surfaces of the heat exchanger. The driving motor is electrically connected to the control unit.

[0011] In the refrigeration equipment with intelligent cleaning function, the guide pipe is provided with branch pipe 1 and branch pipe 2, the outlet end of branch pipe 1 is connected to the water tank, and the outlet end of branch pipe 2 is connected to the sewage outlet.

[0012] In the refrigeration device with intelligent cleaning function, a filter is provided at the branching point of the branch pipe 1.

[0013] In the refrigeration device with intelligent cleaning function, the second branch pipe is provided with a solenoid valve, and the solenoid valve is electrically connected to the control unit.

[0014] In the refrigeration device with intelligent cleaning function, the refrigeration device is also provided with a wind resistance sensor, and the wind resistance sensor includes two wind pressure sensors, which are respectively arranged at the air inlet and the air outlet of the heat exchanger, and are both electrically connected to the control unit.

[0015] In the refrigeration device with intelligent cleaning function, the water tank is also provided with an overflow port.

[0016] An automatic cleaning method is provided, the method being used for cleaning refrigeration equipment, wherein the method adopts the refrigeration equipment with intelligent cleaning function as described above, and comprises the following steps:

[0017] Step S1. Select the cleaning start mode through the control unit, and then set the cleaning time and water pump speed;

[0018] Step S2. The refrigeration equipment starts to operate and performs refrigeration. At this time, the solenoid valve and the water pump are in a closed state, and the water in the water receiving tray flows into the water tank through the branch pipe 1 of the guide pipe;

[0019] Step S3. After working for a period of time, when the wind pressure difference reaches the set value or the working time reaches the set value, the controller turns off the refrigeration according to the received information and starts the cleaning mode. At this time, the solenoid valve opens, the water pump starts, and the spray mechanism sprays water to clean the heat exchanger. The sewage after cleaning is discharged through the sewage outlet of the branch pipe 2;

[0020] Step S4. After the cleaning is completed, the solenoid valve and the water pump are closed, and the refrigeration equipment enters the standby or working state.

[0021] In the automatic cleaning method, the cleaning start mode includes a working time start mode and a wind resistance limit start mode. The cleaning frequency in the working time start mode is 30 to 50 hours per working time, and the starting wind pressure difference of the wind resistance limit start mode is set to be greater than 150 pa / m.

[0022] Beneficial effects:

[0023] The present invention provides a refrigeration device with intelligent cleaning function and an automatic cleaning method. By arranging a water receiving tray and an automatic spraying device in the refrigeration device, the refrigeration device has an intelligent cleaning function, thereby improving the cleanliness of the heat exchanger and further improving the refrigeration effect of the heat exchanger. Compared with the prior art, it has the following beneficial effects:

[0024] 1. The water tray and water tank can be used to collect and store condensed water generated by the refrigeration system. Then, the condensed water can be used to clean the heat exchanger through the automatic spray device to remove dust, oil and other debris on the heat exchange tubes and fins of the heat exchanger. This not only improves the refrigeration effect of the heat exchanger, but also eliminates the need for manual water addition, thus saving manpower and material resources and making reasonable use of the condensed water.

[0025] 2. A guide pipe with two branch pipes is provided, and a solenoid valve is provided on the second branch pipe, so that the water collected by the water receiving tray can flow to different places in different modes. When it is condensed water, it flows into the water tank for storage and utilization, and when it is cleaning sewage, it is discharged through the sewage outlet, thereby avoiding the cleaning sewage from entering the water tank and ensuring that the water in the water tank remains clean;

[0026] 3. The slidable spray mechanism can clean the heat exchanger more comprehensively. The high-pressure nozzle has good flushing ability and can clean the dust, oil and other debris on the heat exchange tubes and fins more thoroughly.

[0027] 4. The wind resistance sensor can accurately judge the cleanliness of the heat exchanger and serve as the basis for starting the automatic spray device, so that the heat exchange device can be cleaned more reasonably and effectively, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A side sectional view of a refrigeration device with intelligent cleaning function provided by the present invention;

[0029] Figure 2 It is a schematic diagram of the structure above the spray mechanism and the heat exchanger;

[0030] Figure 3 It is a structural schematic diagram of a spray mechanism including a transmission track and transmission casters;

[0031] Figure 4 The schematic diagram of the structure of the spray mechanism is a plurality of spray pipes;

[0032] Figure 5 The schematic diagram of the structure of the spray mechanism is the spray plate

[0033] Among them, the figures are marked as follows: 1. heat exchanger, 2. spray mechanism, 3. wind resistance sensor, 4. condenser, 5. evaporator, 6. water receiving tray, 7. water tank, 8. water pump, 9. sewage outlet, 10. spray hole, 11. transmission track, 12. transmission caster, 13. high-pressure nozzle, 14. solenoid valve, 15. filter, 16. spray pipe, 17. spray plate, 18 guide pipe, 19. overflow outlet. DETAILED DESCRIPTION

[0034] The present invention provides a refrigeration device with an intelligent cleaning function. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] See also Figure 1The present invention provides a refrigeration device with an intelligent cleaning function, the refrigeration device includes a heat exchanger 1, the heat exchanger includes a condenser 4 and an evaporator 5, the refrigeration device also includes an automatic spraying device, the automatic spraying device includes a spraying mechanism 2, a water receiving tray 6, a water tank 7 and a water pump 8, the spraying mechanism 2 can be arranged above the heat exchanger 1, and can also be arranged on the side parallel to the heat exchanger 1 and the inside of the heat exchanger 1, for cleaning the heat exchanger 1, the water receiving tray 6 is arranged below the heat exchanger 1, for collecting water condensed in the heat exchanger 1 during the refrigeration process, and collecting sewage generated when cleaning the heat exchanger 1, the water tank 7 is arranged below the water receiving tray 6, the water tank 7 is connected to the water receiving tray through a guide pipe 18, and is used to store water condensed during the refrigeration process, the water inlet end of the water pump 8 is connected to the water tank 7, and the water outlet end is connected to the spraying mechanism through a rubber hose, and the condensed water collected and stored in the water tank 7 is used for cleaning the heat exchanger 1 through the water pump 8, so as to achieve the effect of cleaning and effectively utilizing the condensed water. During the specific implementation process, when the refrigeration equipment is working, the heat exchanger 1 will condense water in the air, which will be collected by the water receiving tray 6 and flow into the water tank from the guide pipe 18. During cleaning, the water in the water tank 7 is input into the spray mechanism 2 through the water pump 8. The spray mechanism 2 sprays and cleans the heat exchanger 1, so that dust, oil and other debris on the heat exchange tubes and fins of the heat exchanger 1 can be removed, thereby achieving the purpose of using condensed water to clean the condenser and evaporator.

[0036] In certain embodiments, such as Figure 2 , Figure 4 , Figure 5 As shown, the spray mechanism 2 is a plurality of spray pipes 16 or spray plates 17 with spray holes 10 drilled therein, which are arranged above the heat exchanger 1, and the opening direction of the spray holes 10 faces the heat exchanger 1. Specifically, when the spray mechanism 2 is a spray pipe 16, it can be a plurality of spray pipes 16 arranged in parallel, one end of the spray pipe 16 is connected to the main pipe 2, and one end of the main pipe is connected to the water pump 8. When the spray mechanism 2 is a spray plate 17, it is an inner hollow plate with spray holes 10 drilled therein, and the spray plate 17 is connected to the pipe 8 through a pipeline, and the surface with the spray holes 10 faces the heat exchanger 1. By setting the spray holes 10, water can be evenly dispersed on the heat exchanger 1 during spraying, thereby making the heat exchanger 1 cleaner and improving the cooling effect.

[0037] As shown in Figure 3, preferably, in some embodiments, the spray mechanism 2 includes a transmission track 11 and a spray pipe 16 with a transmission caster 12, and a drive motor (not shown in the attached figure) for driving the spray pipe 16, the spray pipe 16 is provided with a plurality of high-pressure nozzles 13, the high-pressure nozzles 13 have a better cleaning effect, the water inlet of the spray pipe 16 is connected to the water outlet of the water pump through a rubber hose, the transmission track 11 includes an upper track and a lower track relatively arranged up and down, the spray pipe 16 is slidably connected and mounted on the transmission track 11 through the transmission caster 12, and under the drive of the drive motor, the spray pipe 16 reciprocates left and right along the transmission track 11, thereby achieving the cleaning of the heat exchanger 1. It should be noted that the spray pipe 16 can be one or two distributed left and right, and correspondingly, the drive motor can also be one or two, which are specifically set according to actual needs. When working, the spray pipe 16 moves left and right under the drive of the drive motor, and when stationary, the spray pipe 16 stays at both ends of the transmission track.

[0038] As an implementation method, Figure 3 As shown, in the spray mechanism 2 of the above structure, the transfer track 11 is provided with two groups, and correspondingly, the spray pipes with transfer casters are also provided with two. The transfer tracks are relatively arranged at the upper and lower edges of the front and back sides of the heat exchanger. The spray pipes reciprocate left and right along the transfer tracks through the transfer casters to spray and clean from the front and back sides of the heat exchanger.

[0039] As another embodiment, in the spray mechanism 2 of the above structure, the transfer track 11 is arranged in the middle part of the interior of the heat exchanger 1, that is, between the condenser 4 and the evaporator 5, and the high-pressure nozzles 13 are staggeredly directed toward the condenser 4 and the evaporator 5, that is, if the first high-pressure nozzle 13 is directed toward the condenser 4, then the second high-pressure nozzle 13 is directed toward the evaporator 5, and the two adjacent high-pressure nozzles have different directions. During installation, the direction of the high-pressure nozzles 13 can be adjusted according to actual needs to achieve the best spray cleaning effect. In the specific implementation process, the spray pipe 16 moves along the transfer track 11, and the high-pressure nozzle 13 sprays water from the inside of the heat exchanger 1 to the condenser 4 and the evaporator 5, which has the characteristics of good cleaning effect and compact structure. The structure is Figure 3 A deformation of the structure is just a change in the location of the spray mechanism. Figure 3 It can be seen that no drawings are provided.

[0040] Specifically, Figure 1As shown, in the above-mentioned refrigeration equipment with intelligent cleaning function, the guide pipe 18 is provided with a branch pipe 19 and a branch pipe 20, that is, the guide pipe 18 connected to the water receiving tray 6 is provided with two outlets, wherein the outlet end of the branch pipe 19 is connected to the water tank 7 and is in a bent shape; the outlet end of the branch pipe 20 is connected to the sewage outlet 9. Further, a filter net 15 is provided at the branching point of the branch pipe 19, which is used to filter the water entering the water tank 7 and prevent impurities in the cleaning sewage from entering the water tank. Further, the branch pipe 2 20 is provided with a solenoid valve 14, and the solenoid valve 14 is electrically connected to the control unit, which is used to discharge the sewage after cleaning the heat exchanger. During the specific implementation process, when the heat exchanger 1 is cooling, the water receiving tray 6 collects clean condensed water. At this time, the solenoid valve 14 is in a closed state, and the condensed water in the water receiving tray 6 enters the water tank 7 through the branch pipe 19. When the heat exchanger 1 is cleaned, the solenoid valve 14 is opened. At this time, the water receiving tray 6 collects cleaning wastewater. The cleaning wastewater is discharged through the sewage outlet 9 under the action of gravity to prevent the cleaning wastewater from entering the water tank.

[0041] Specifically, Figure 1 As shown, in the refrigeration device of the above structure, a wind resistance sensor 3 is also provided, and the wind resistance sensor includes two wind pressure sensors, which are used to detect the wind pressure at the air inlet and the air outlet of the heat exchanger 1, and are both electrically connected to the control unit. The wind resistance sensor 3 measures the wind pressure at the air inlet and the air outlet to obtain the wind pressure difference between the two. According to the size of the wind pressure difference, the cleanliness of the condenser 4 and the evaporator 5 can be inferred. When the cleanliness of the heat exchanger is higher, the difference is smaller. When the cleanliness of the heat exchanger is lower, the wind pressure difference between the two is larger. The control unit can compare the measured wind pressure difference with the set value. When the wind pressure difference is greater than or equal to the set value, the cleaning is started.

[0042] Specifically, Figure 1 In the refrigeration device of the above structure, the water tank 7 is also provided with an overflow port 19, and the height of the overflow port 19 is lower than the height of the outlet of the branch pipe. When the water in the water tank reaches the overflow port 19, the excess water will flow out through the overflow port 19, thereby preventing the water in the water tank 7 from entering the refrigeration device unit when it is too full.

[0043] Specifically, the refrigeration device with intelligent cleaning function is also provided with a control unit, which can set the cleaning start mode and is electrically connected to the heat exchanger 1, the water pump 8, the drive motor, the solenoid valve, and the wind speed sensor 3, respectively, and can control the opening and closing of the heat exchanger 1, the water pump 8, the drive motor, and the solenoid valve, and receive the signal of the wind speed sensor 3, and adjust the frequency of the water pump. Through the control unit, automatic control of cleaning can be achieved without manual operation, which is convenient and fast.

[0044] A method for automatically cleaning a refrigeration device, the method using the refrigeration device with intelligent cleaning function as described above, comprising the following steps:

[0045] Step S1. Select a cleaning start mode through a control unit, wherein the cleaning start mode includes a working time start mode and a wind resistance limit start mode, and then set the cleaning time. The cleaning frequency in the working time start mode is based on the working time of the heat exchanger 1. Generally, the cleaning frequency is set to 30 to 50 hours per time. In the specific implementation process, it can be adjusted according to the severity of the working environment. When the working environment is dusty or oily, a shorter working time can be set to increase the cleaning frequency. When the working environment is good, the cleaning frequency can be reduced. The wind resistance limit start mode is based on the wind pressure difference between the air inlet and the air outlet of the heat exchanger. When the dust or oil accumulates on the heat exchange tube and the fin, the heat exchange effect is worse. At this time, the wind pressure difference will increase due to the accumulation of dust on the heat exchanger, and the dehumidification effect of the refrigeration equipment will be reduced and the energy consumption will not meet the requirements. When the wind pressure difference reaches the start limit, the spray mechanism starts the cleaning mode to spray and clean the heat exchanger. Generally, the wind pressure difference start limit of the wind resistance start mode is set to be greater than 150pa / m. When cleaning, the cleaning time can be set to 4 to 8 minutes, which has a cleaner cleaning effect.

[0046] Step S2. The refrigeration equipment starts to operate and performs refrigeration. At this time, the solenoid valve and the water pump are in a closed state, and the water in the water receiving tray flows into the water tank through the branch pipe 1 of the guide pipe;

[0047] Step S3. When the working time of the heat exchanger reaches the set value, or the wind speed difference reaches the set value, the controller turns off the refrigeration according to the received information and starts the cleaning mode. At this time, the solenoid valve opens, the water pump starts, and the spray mechanism sprays water to clean the heat exchanger. The sewage after cleaning is discharged through the sewage outlet of the branch pipe 2;

[0048] Step S4. After the cleaning is completed, the solenoid valve and the water pump are closed, and the refrigeration equipment enters the standby or working state.

[0049] In the above-mentioned automatic cleaning method of refrigeration equipment, the condensed water collected during the refrigeration process of the refrigeration equipment is used to clean the heat exchange tubes and fins through the water pump 8 and the spray mechanism 2. The method does not require manual operation and is completely turned on and off by the control unit. The start-up mode can be set according to actual needs, and it is convenient, fast and practical.

[0050] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A refrigeration device with intelligent cleaning function, comprising a heat exchanger, wherein the heat exchanger comprises a condenser and an evaporator, characterized in that: The refrigeration equipment also includes an automatic spray device, which includes a spray mechanism, a water tank, a water pump and a water receiving tray. The spray mechanism is used to clean the heat exchanger. The water receiving tray is arranged below the heat exchanger. The water tank is arranged below the water receiving tray. The water tank is connected to the water receiving tray through a guide pipe. The water inlet end of the water pump is connected to the water tank, and the water outlet end is connected to the spray mechanism through a rubber hose. The refrigeration equipment is also provided with a control unit, and the control unit is electrically connected to the water pump, the fan and the heat exchanger; the guide pipe is provided with branch pipe 1 and branch pipe 2, branch pipe 1 The outlet end of the branch pipe is connected to the water tank, and the outlet end of the branch pipe 2 is connected to the sewage outlet. A filter is provided at the branch intersection of the branch pipe 1, and the branch pipe 2 is provided with a solenoid valve, which is electrically connected to the control unit; when the heat exchanger is cooling, the water receiving tray collects clean condensed water. At this time, the solenoid valve is in a closed state, and the condensed water in the water receiving tray enters the water tank through the branch pipe 1; when the heat exchanger is cleaned, the solenoid valve is opened, and the water receiving tray collects cleaning sewage. The cleaning sewage is discharged through the sewage outlet first under the action of gravity to prevent the sewage after cleaning from entering the water tank.

2. The refrigeration equipment with intelligent cleaning function according to claim 1, characterized in that: The spray mechanism is a plurality of spray pipes or spray plates provided with spray holes which are arranged above the heat exchanger, and the opening direction of the spray holes faces the heat exchanger.

3. The refrigeration equipment with intelligent cleaning function according to claim 1, characterized in that: The spray mechanism includes a transmission track and a spray pipe with transmission casters, and a driving motor for driving the spray pipe. The spray pipe is slidably connected to the transmission track through the transmission casters. The spray pipe is provided with a plurality of high-pressure nozzles. The water inlet of the spray pipe is connected to the water outlet of the water pump through a rubber hose. The transmission track includes an upper track and a lower track arranged relatively parallel to each other, which are respectively arranged on the top surface and the bottom surface of the heat exchanger. The driving motor is electrically connected to the control unit.

4. The refrigeration device with intelligent cleaning function according to claim 1, characterized in that: The refrigeration device is also provided with a wind resistance sensor, which includes two wind pressure sensors, which are respectively arranged at the air inlet and the air outlet of the heat exchanger, and are both electrically connected to the control unit.

5. The refrigeration device with intelligent cleaning function according to claim 1, characterized in that: The water tank is also provided with an overflow port.

6. An automatic cleaning method, which is used for cleaning refrigeration equipment, characterized in that: The method adopts the refrigeration device with intelligent cleaning function as claimed in any one of claims 1 to 5, comprising the following steps: Step S1. Select the cleaning start mode through the control unit, and then set the cleaning time and water pump speed; Step S2. The refrigeration equipment starts to operate and performs refrigeration. At this time, the solenoid valve and the water pump are in a closed state, and the water in the water receiving tray flows into the water tank through the branch pipe 1 of the guide pipe; Step S3. After working for a period of time, when the wind pressure difference reaches the set value or the working time reaches the set value, the controller turns off the refrigeration according to the received information and starts the cleaning mode. At this time, the solenoid valve opens, the water pump starts, and the spray mechanism sprays water to clean the heat exchanger. The sewage after cleaning is discharged through the sewage outlet of the branch pipe 2; Step S4. After the cleaning is completed, the solenoid valve and the water pump are closed, and the refrigeration equipment enters the standby or working state.

7. The automatic cleaning method according to claim 6, characterized in that: The cleaning start mode includes a working time start mode and a wind resistance limit start mode. The cleaning frequency in the working time start mode is 30 to 50 hours per working time, and the starting wind pressure difference of the wind resistance limit start mode is set to be greater than 150 Pa / m.

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