阅读说明：本技术 一种冷库空调的水冲霜调节方法及系统 (Water defrosting adjusting method and system for refrigeration house air conditioner ) 是由 鲍勇 林声杰 宋平 贺春辉 于 2021-01-04 设计创作，主要内容包括：本发明公开一种冷库空调的水冲霜调节方法及系统,该方法包括以下步骤：(1)冷库空调开启低温模式运行,在换热盘管的出风温度到达温度点时,开启水冲霜模式,对换热盘管进行化霜；(2)检测换热盘管的出风温度,当出风温度不满足判断条件,开启水冲霜模式；当出风温度满足判断条件,开启吹风模式,对换热盘管进行干燥。该方法在采用水冲霜方式下能够使得换热盘管上不会进行二次结霜,保证换热盘管上的霜不会长时间累积,从而保证其制冷功能的稳定,提高制冷效果。(The invention discloses a water defrosting regulation method and a water defrosting regulation system for a refrigeration house air conditioner, wherein the method comprises the following steps: (1) the method comprises the following steps that a low-temperature mode is started for running the refrigeration house air conditioner, and when the air outlet temperature of a heat exchange coil reaches a temperature point, a water defrosting mode is started to defrost the heat exchange coil; (2) detecting the air outlet temperature of the heat exchange coil, and starting a water defrosting mode when the air outlet temperature does not meet the judgment condition; when the air outlet temperature meets the judgment condition, the blowing mode is started, and the heat exchange coil is dried. According to the method, secondary frosting on the heat exchange coil can be avoided in a water defrosting mode, and frost on the heat exchange coil can not be accumulated for a long time, so that the stability of the refrigeration function of the heat exchange coil is ensured, and the refrigeration effect is improved.)

1. A water defrosting regulation method of a refrigeration house air conditioner is characterized by comprising the following steps:

(1) the method comprises the following steps that a low-temperature mode is started for running the refrigeration house air conditioner, and when the air outlet temperature of a heat exchange coil reaches a temperature point, a water defrosting mode is started to defrost the heat exchange coil;

(2) detecting the air outlet temperature of the heat exchange coil, and starting a water defrosting mode when the air outlet temperature does not meet the judgment condition; when the air outlet temperature meets the judgment condition, the blowing mode is started, and the heat exchange coil is dried.

2. The water defrosting regulation method for the refrigerator air conditioner according to claim 1, wherein in the step (1), when the outlet air temperature of the heat exchange coil reaches a temperature point, a water defrosting mode is started, and defrosting of the heat exchange coil is specifically as follows: and detecting the air outlet temperature T1 of the heat exchange coil, and starting a water defrosting mode when the T1 is less than or equal to T, wherein T is the critical temperature value of frosting.

3. The water defrosting regulation method for the refrigerator air conditioner according to claim 1, wherein in the step (1), when the outlet air temperature of the heat exchange coil does not reach a temperature point, the refrigerator air conditioner operates in a normal mode.

4. The water defrosting regulation method for the refrigerator air conditioner according to claim 1, wherein in the step (1), the water defrosting mode comprises the specific steps of: and opening a water valve, flushing the heat exchange coil for Xmin by using a water spray head, and closing the water valve, wherein X is a preset time value.

5. The water defrosting regulation method for the refrigerator air conditioner according to claim 2, wherein in the step (1), the detection of the outlet air temperature T1 of the heat exchange coil is specifically as follows: carry out temperature detection through 3 temperature sensing package at heat exchange coil air outlet department, 3 temperature sensing package are detected at heat exchange coil air outlet department round trip movement, and the frequency of removal is an Amin cycle, and T1 is the average value that 3 temperature sensing package detected a cycle, and wherein A is the preset time value.

6. The water defrosting regulation method for the refrigerator air conditioner according to claim 1, wherein in the step (2), when the outlet air temperature does not meet the judgment condition, a water defrosting mode is started; when the air-out temperature satisfies the judgement condition, it specifically does to open the mode of blowing: detecting the air outlet temperature T1 of the heat exchange coil, and starting a water defrosting mode when the T1 is less than or equal to T; when T1> T, the blowing mode is turned on.

7. The water defrosting regulation method for the refrigerator air conditioner according to claim 1, wherein in the step (2), the specific steps of the blowing mode are as follows: and opening the air valve, blowing air to wash the heat exchange coil for Ymin by using an air nozzle, and closing the air valve, wherein Y is a preset time value.

8. A water defrosting regulation system of a refrigeration house air conditioner is characterized in that the system is applied to the method of any one of the claims 1 to 7 and comprises a fan, a heat exchange coil, a temperature detection device arranged at an air outlet of the heat exchange coil and used for detecting the air outlet temperature of the heat exchange coil, a water defrosting mechanism used for removing frost blocks on the heat exchange coil and a blowing mechanism used for removing residual water drops on the heat exchange coil; wherein the content of the first and second substances,

the water defrosting mechanism comprises a water pump, a water spray head and a water valve, wherein the water spray head is communicated with the water pump and is used for spraying water to the heat exchange coil pipe, and the water valve is arranged between the water pump and the water spray head and is used for controlling the water spray head to be opened and closed;

the blowing mechanism comprises an air compressor, an air nozzle communicated with the air compressor and used for spraying air to the heat exchange coil, and an air valve arranged between the air compressor and the air nozzle and used for controlling the air nozzle to be opened and closed.

9. The water defrosting regulation system of a refrigerator air conditioner according to claim 8, wherein the temperature detection device comprises a guide rail arranged at the air outlet of the heat exchange coil and 3 temperature sensing bulbs arranged on the guide rail in a sliding manner, the 3 temperature sensing bulbs are uniformly arranged along the guide rail, and each temperature sensing bulb is arranged on the guide rail in a sliding manner with different height differences.

10. The water defrosting regulation system of a freezer air conditioner according to claim 8, characterized in that a water collection tray for collecting water is arranged below the heat exchange coil, and the water collection tray is communicated with the water pump.

Technical Field

The invention relates to the technical field of air coolers, in particular to a water defrosting adjusting method and system of a refrigeration house air conditioner.

Background

With the increasing living standard of people, the storage and transportation of food become very important, and in order to ensure that the food is more fresh, the freezer air conditioner for storing and cooling also becomes very important. In the cold storage, the temperature of the cold storage is generally regulated to be very low, the temperature of the cold storage is set to be lower than 5 ℃, therefore, when the air conditioner of the air cooler runs, a working condition unit needs to be regulated to be a low-temperature working condition, and the lowest temperature can reach minus 30 ℃. Due to the existence of the humidity in the refrigerator, after the air conditioner of the air cooler runs for 3-5 hours, ice crystals are generated on the heat exchange coil pipe and the fins of the evaporator in the refrigerator, and a layer of thick frost is formed.

The existing defrosting of an air conditioner is generally carried out by raising the temperature of a refrigeration house and flushing the frost with water. The defrosting by adopting the increased temperature is not capable of increasing the temperature to a high degree due to the storage function requirement of the refrigeration house, and the frost of the heat exchange coil is accumulated all the time in the past operation, so that the refrigerating capacity of the evaporator is influenced, and the refrigerating effect is reduced. Adopt water towards the frost mode, for example, utility model patent that grant publication number is CN211041545U discloses a novel water towards frost formula air-cooler, and this air-cooler is through will towards on frost water is unrestrained to evaporator coil 8 after transmitting to the watering dish through the inlet tube, gets rid of the frost piece that attaches on the evaporator coil, then flows through the drain pipe after falling the drain pan. However, the air cooler defrosts in a water defrosting mode, and after defrosting, defrosting water remains on the fins and the evaporator coil to cause secondary frosting, so that the refrigerating effect of the air cooler is influenced.

Disclosure of Invention

The invention aims to overcome the existing problems and provides a water defrosting adjusting method of a refrigeration house air conditioner.

The invention also aims to provide a water defrosting regulation system of the refrigeration house air conditioner.

The purpose of the invention is realized by the following technical scheme:

a water defrosting regulation method for a refrigeration house air conditioner comprises the following steps:

(1) the method comprises the following steps that a low-temperature mode is started for running the refrigeration house air conditioner, and when the air outlet temperature of a heat exchange coil reaches a temperature point, a water defrosting mode is started to defrost the heat exchange coil;

(2) detecting the air outlet temperature of the heat exchange coil, and starting a water defrosting mode when the air outlet temperature does not meet the judgment condition; when the air outlet temperature meets the judgment condition, the blowing mode is started, and the heat exchange coil is dried.

In a preferable scheme of the present invention, in step (1), when the outlet air temperature of the heat exchange coil reaches a temperature point, a water defrosting mode is started, and the defrosting of the heat exchange coil specifically comprises: and detecting the air outlet temperature T1 of the heat exchange coil, and starting a water defrosting mode when the T1 is less than or equal to T, wherein T is the critical temperature value of frosting. When the air outlet temperature T1 of the heat exchange coil is less than or equal to the critical temperature value of frosting, the heat exchange coil can be frosted, and defrosting is carried out after a water defrosting mode is started; by setting the critical temperature value of frosting, the frosting state of the heat exchange coil can be accurately detected, and therefore the heat exchange coil is effectively defrosted.

Preferably, in the step (1), when the outlet air temperature of the heat exchange coil does not reach a temperature point, the freezer air conditioner operates in a normal mode. When the air outlet temperature of the heat exchange coil is larger than the critical temperature value of frosting, the condition that the frosting condition is not achieved on the heat exchange coil is indicated, and the refrigeration house air conditioner normally operates according to a low-temperature mode.

Further, in step (1), when the outlet air temperature of the heat exchange coil does not reach the temperature point, the operation of the air conditioner of the refrigeration house according to the normal mode is specifically as follows: when T1> T, the freezer air conditioner operates in the normal mode.

Preferably, in the step (1), the water defrosting mode specifically comprises the following steps: and opening a water valve, flushing the heat exchange coil for Xmin by using a water spray head, and closing the water valve, wherein X is a preset time value. When the air outlet temperature T1 of heat exchange coil is less than or equal to the critical temperature value that frosts, can frosting on the heat exchange coil, spray water to heat exchange coil through the water shower nozzle, after washing a period of water, can melt heat exchange coil's frost, improve the refrigerating capacity of air-cooler air conditioner.

Preferably, in step (1), detecting the air outlet temperature T1 of the heat exchange coil specifically is: carry out temperature detection through 3 temperature sensing package at heat exchange coil air outlet department, 3 temperature sensing package are detected at heat exchange coil air outlet department round trip movement, and the frequency of removal is an Amin cycle, and T1 is the average value that 3 temperature sensing package detected a cycle, and wherein A is the preset time value. Carry out round trip movement through 3 temperature sensing package and detect heat exchange coil's air-out temperature, can effectively reduce temperature detection error, improved the temperature detection precision, guaranteed that the freezer air conditioner can in time change the frost.

Further, in the step (1), after the water valve is opened, the water pressure is adjusted to be P1, and the heat exchange coil is washed by the water spray head, wherein P1 is a preset water pressure value, and the water spray head is a rotary spray head. The size of the P1 is set by the position distribution of the air conditioner of the refrigeration house, the fan is behind the heat exchange coil, if the fan and the heat exchange coil are relatively close, the P1 value is set to be lower, otherwise, the P1 value is higher. Adopt rotatory nozzle, guaranteed on the one hand that the spray regime is wide, on the other hand can spray heat transfer dish more evenly, has improved the defrosting effect.

Preferably, in the step (2), when the outlet air temperature does not meet the judgment condition, a water defrosting mode is started; when the air-out temperature satisfies the judgement condition, it specifically does to open the mode of blowing: detecting the air outlet temperature T1 of the heat exchange coil, and starting a water defrosting mode when the T1 is less than or equal to T; when T1> T, the blowing mode is turned on. After the water defrosting mode is finished, detecting the air outlet temperature of the heat exchange coil again, if the air outlet temperature of the heat exchange coil is still less than or equal to the critical temperature value of frosting, indicating that the frost remains on the heat exchange coil, and continuing starting the water defrosting mode to defrost the heat exchange coil; if the air outlet temperature of the heat exchange coil is greater than the critical temperature value of frosting, the frost blocks of the heat exchange coil are clear, and the frost blocks can be effectively removed; then carry out the mode of blowing, carry out the drying to heat exchange coil, prevent to remain the drop of water secondary defrosting on heat exchange coil, influence the heat exchange efficiency of coil to influence the operating mode regulation of freezer, lead to the refrigerating capacity to reduce.

Preferably, in the step (2), the blowing mode includes the following specific steps: and opening the air valve, blowing air to wash the heat exchange coil for Ymin by using an air nozzle, and closing the air valve, wherein Y is a preset time value. By adopting the mode, the heat exchange coil is washed for Ymin, so that residual water drops of the heat exchange coil can be completely removed, and the heat exchange coil is dried.

Further, in the step (2), after the air valve is opened, the air pressure is adjusted to be P2, and the heat exchange coil is flushed by blowing air through the air nozzle, wherein P2 is a preset air pressure value. The size of the P2 is set by the position distribution of the air conditioner of the refrigeration house, the fan is behind the heat exchange coil, if the fan and the heat exchange coil are relatively close, the P2 value is set to be lower, otherwise, the P2 value is higher.

A water defrosting regulation system of a refrigeration house air conditioner comprises a fan, a heat exchange coil, a temperature detection device, a water defrosting mechanism and a blowing mechanism, wherein the temperature detection device is arranged at an air outlet of the heat exchange coil and used for detecting the air outlet temperature of the heat exchange coil; wherein the content of the first and second substances,

the water defrosting mechanism comprises a water pump, a water spray head and a water valve, wherein the water spray head is communicated with the water pump and is used for spraying water to the heat exchange coil pipe, and the water valve is arranged between the water pump and the water spray head and is used for controlling the water spray head to be opened and closed;

the blowing mechanism comprises an air compressor, an air nozzle communicated with the air compressor and used for spraying air to the heat exchange coil, and an air valve arranged between the air compressor and the air nozzle and used for controlling the air nozzle to be opened and closed.

The working principle of the water defrosting regulation system of the refrigeration house air conditioner is as follows:

heat exchange coil is when the low temperature operation, blow to the freezer through the low-temperature gas of fan with heat exchange coil, after the operation certain time, detect heat exchange coil's air-out temperature through temperature-detecting device, judge whether heat exchange coil frosts, if frosting, open the water valve, the water pump sprays water on heat exchange coil through the shower nozzle with water, wash heat exchange coil, make the frost on the heat exchange coil melt, melt the back, open the pneumatic valve again, air compressor passes through gas shower nozzle with gas to heat transfer pipeline jet-propelled, gas gets rid of the drying with remaining drop on the heat exchange coil, it carries out the secondary frosting to have prevented remaining drop, heat exchange coil's heat exchange efficiency has been improved.

Preferably, temperature-detecting device is including setting up heat exchange coil air outlet's guide rail and slip setting are in 3 temperature sensing package on the guide rail, 3 temperature sensing package along guide rail align to grid, and every temperature sensing package is different difference in height slidable mounting on the guide rail. Adopt above-mentioned mechanism, on the one hand through setting up 3 temperature sensing package, can monitor heat exchange coil's air-out temperature effectively, improved and detected the precision, on the other hand, 3 temperature sensing package are different difference in height setting, can improve temperature detection scope, further improve heat exchange coil's air-out temperature's detection precision.

Preferably, a water collecting tray for collecting water is arranged below the heat exchange coil, and the water collecting tray is communicated with the water pump. Through setting up above-mentioned structure, when water in the water pump sprays on heat exchange coil through the water shower nozzle, water can follow the heat exchange coil and flow into on the water-collecting tray, collects water, then carries water to the water pump in, forms the circulation, has effectively saved the water resource, avoids extravagant.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the water defrosting adjusting method of the refrigeration house air conditioner, when the air outlet temperature of the heat exchange coil reaches the temperature point, the water defrosting mode is started to defrost the heat exchange coil, so that frost on the heat exchange coil can be effectively removed, the heat exchange capacity of the heat exchange coil is improved, and the stability of the refrigeration function of the refrigeration house air conditioner is further ensured.

2. According to the water defrosting adjusting method of the refrigeration house air conditioner, after the heat exchange coil is subjected to water defrosting, the air outlet temperature of the heat exchange coil is detected, after the judgment condition is met, the blowing mode is started, the heat exchange coil is dried, water drops remained after the heat exchange coil is defrosted can be effectively removed, secondary frosting of the water drops in a low-temperature environment is effectively prevented, and therefore the heat exchange efficiency of the heat exchange coil is improved, and the refrigerating capacity of the refrigeration house air conditioner is improved.

Drawings

Fig. 1 is a water flush frost adjusting flow chart of a first embodiment of a water flush frost adjusting method of a refrigeration house air conditioner according to the present invention.

Fig. 2 is a schematic structural diagram of a water defrosting regulation system of a refrigerator air conditioner according to the present invention, wherein arrows indicate air flow directions.

Fig. 3 is a schematic structural diagram of the temperature detection device in the present invention.

Detailed Description

In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1-2, the present embodiment discloses a water defrosting regulation method for a refrigerator air conditioner, including the following steps:

(1) the method comprises the following steps that a low-temperature mode is started for running of the refrigeration house air conditioner, the air outlet temperature T1 of a heat exchange coil 5 starts to be detected after the operation is carried out for 3 hours, and when T1 is greater than T, the refrigeration house air conditioner runs according to a normal mode; when T1 is less than or equal to T, entering a water defrosting mode, which specifically comprises the following steps:

opening the water valve 7, adjusting the water pressure to be P1, flushing the heat exchange coil 5 for Xmin by using the water spray head 3, and then closing the water valve 7; wherein, T is the critical temperature value of frosting, P1 is the preset water pressure value, and X is the preset time value.

In the step (1), when the air outlet temperature T1 of the heat exchange coil 5 is greater than the critical temperature value of frosting, it indicates that the condition of frosting on the heat exchange coil 5 is not reached, and the freezer air conditioner normally operates according to the low-temperature mode; when the air outlet temperature T1 of the heat exchange coil 5 is less than or equal to the critical temperature value of frosting, the heat exchange coil 5 can be frosted, and defrosting is carried out after the water defrosting mode is entered; through setting for the critical temperature value of frosting, can the accurate frosting state that detects heat exchange coil 5, spray water to heat exchange coil 5 through the shower nozzle, after washing a period through the water, can get rid of the frost on heat exchange coil 5 effectively, improved heat exchange coil 5's heat exchange capacity, and then guarantee the stability of freezer air conditioner refrigeration function.

(2) After the water defrosting mode is finished, detecting the air outlet temperature of the heat exchange coil 5 again, and entering the water defrosting mode when T1 is less than or equal to T to continuously defrost the heat exchange coil 5; when T1> T, open the mode of blowing, specifically include:

and opening the air valve 8, adjusting the air pressure to P2, blowing air to the heat exchange coil 5 by the air nozzle 4 for flushing for Ymin, and closing the air valve 8, wherein Y is a preset time value, and P2 is a preset air pressure value.

In the step (2), the air outlet temperature of the heat exchange coil 5 is detected again, and if the air outlet temperature of the heat exchange coil 5 is still less than or equal to the critical temperature value of frosting, it is indicated that frost remains on the heat exchange coil 5, and the water-flushing frost mode is continuously started to defrost the heat exchange coil 5; if the air outlet temperature of the heat exchange coil 5 is greater than the critical temperature value of frosting, the frost blocks of the heat exchange coil 5 are clear, and the frost blocks can be effectively removed; then, a blowing mode is executed, the heat exchange coil 5 is dried, and air blowing and washing are carried out for Ymin, so that the residual water drops of the heat exchange coil 5 can be completely removed; effectively prevent to remain the drop of water on heat exchange coil 5 and carry out the secondary under low temperature environment and frost to improve heat exchange coil 5's heat exchange efficiency, improve freezer air conditioner ability.

Referring to fig. 1 to fig. 3, in the step (1), detecting the air outlet temperature T1 of the heat exchange coil 5 specifically includes: carry out temperature detection through 3 temperature sensing package 9 of 5 air outlets of heat exchange coil pipe, 3 temperature sensing package 9 move back and forth at 5 air outlets of heat exchange coil pipe and detect, and the frequency of removal is Amin a cycle, and T1 detects the average value of a cycle for 3 temperature sensing package 9, and wherein A is the time value that predetermines, and concrete removal cycle setting depends on heat exchange coil pipe 5's actual size. Carry out round trip movement through 3 temperature sensing package 9 and detect heat exchange coil 5's air-out temperature, can effectively reduce temperature detection error, improved the temperature detection precision, guaranteed that the freezer air conditioner can in time change the frost.

Furthermore, the sizes of the P1 and the P2 are set by the position distribution of the air conditioner of the refrigeration house, the fan 6 is arranged behind the heat exchange coil 5, if the positions of the fan 6 and the heat exchange coil 5 are relatively close, the values of the P1 and the P2 are set to be lower, and otherwise, the values are higher.

Further, in step (1), water shower nozzle 3 is rotatory nozzle, adopts rotatory nozzle, has guaranteed on the one hand that the spray range is wide, and on the other hand can spray the heat transfer dish more evenly, has improved the defrosting effect.

Referring to fig. 2, the embodiment further discloses a water defrosting regulation system of a refrigeration house air conditioner, which includes a fan 6, a heat exchange coil 5, a temperature detection device arranged at an air outlet of the heat exchange coil 5 and used for detecting the air outlet temperature of the heat exchange coil 5, a water defrosting mechanism used for removing frost blocks on the heat exchange coil 5, and a blowing mechanism used for removing residual water drops on the heat exchange coil 5; wherein the content of the first and second substances,

the water defrosting mechanism comprises a water pump 1, a water spray head 3 which is communicated with the water pump 1 and is used for spraying water to the heat exchange coil 5, and a water valve 7 which is arranged between the water pump 1 and the water spray head 3 and is used for controlling the water spray head 3 to be opened and closed;

the blowing mechanism comprises an air compressor 2, an air nozzle 4 communicated with the air compressor 2 and used for spraying air to the heat exchange coil 5, and an air valve 8 arranged between the air compressor 2 and the air nozzle 4 and used for controlling the air nozzle 4 to be opened and closed.

Referring to fig. 2, the working principle of the water defrosting regulation system of the freezer air conditioner is as follows:

heat exchange coil 5 is when the low temperature operation, blow the low temperature gas of heat exchange coil 5 to the freezer through fan 6, after the operation certain time, detect the air-out temperature of heat exchange coil 5 through temperature-detecting device, judge whether heat exchange coil 5 frosts, if frosting, open water valve 7, water pump 1 sprays water on heat exchange coil 5 through the shower nozzle with water, wash heat exchange coil 5, make the frost on the heat exchange coil 5 melt, melt the back, reopen pneumatic valve 8, air compressor 2 passes through gas shower nozzle 4 with gas and spouts gas to the heat transfer pipeline, gas gets rid of the drying with remaining water droplet on heat exchange coil 5, prevented that remaining water droplet from carrying out the secondary under low temperature environment and frosting, heat exchange coil 5's heat exchange efficiency has been improved, and then improve freezer air conditioning capacity.

Referring to fig. 3, the temperature detecting device includes a guide rail 11 disposed at an air outlet of the heat exchanging coil 5 and 3 temperature sensing bulbs 9 slidably disposed on the guide rail 11, the 3 temperature sensing bulbs 9 are uniformly arranged along the guide rail 11, and each temperature sensing bulb 9 is slidably mounted on the guide rail 11 with different height differences. Adopt above-mentioned mechanism, on the one hand through setting up 3 temperature sensing package 9, can monitor heat exchange coil 5's air-out temperature effectively, improved and detected the precision, on the other hand, 3 temperature sensing package 9 are different altitude differences and set up, can improve the temperature detection scope, further improve heat exchange coil 5's air-out temperature's detection precision.

Referring to fig. 2, a water collecting tray 10 for collecting water is arranged below the heat exchange coil 5, and the water collecting tray 10 is communicated with the water pump 1 through a water pipe 12. Through setting up above-mentioned structure, when water in the water pump 1 sprays on heat exchange coil 5 through water shower nozzle 3, water can follow the heat exchange coil and flow into water-collecting tray 10 on, collect water, then carry water to water pump 1 in, form the circulation, effectively saved the water resource, avoid extravagant.

Example 2

The other structures in this embodiment are the same as embodiment 1, except that: the number of said bulbs 9 can be determined according to the specific dimensions of the heat exchanging coil.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.