Evaporator Frost Accumulation Adjustment Assembly, Evaporator, Heat Exchange Equipment and Control Method

Abstract

The present invention discloses an evaporator frost amount regulating component, an evaporator, a heat exchange device and a control method, which relate to the technical field of heat exchange equipment and solve the problem in the prior art that the refrigerant amount of each branch of the evaporator is unevenly distributed, resulting in uneven frost on the evaporator and low heat exchange efficiency. The evaporator frost amount regulating component of the present invention includes a flow distribution valve, which is arranged between the liquid inlet pipe and the liquid inlet branch of the evaporator. The flow distribution valve has multiple independent valve ports, and the multiple valve ports are respectively connected to the multiple liquid inlet branches of the evaporator. The flow of each valve port is determined based on the refrigerant parameters of each branch, and the refrigerant amount of each branch is made equivalent. In the evaporator frost amount regulating component of the present invention, the flow of each valve port is determined based on the refrigerant parameters of each branch, which can evenly distribute the refrigerant amount of each branch of the evaporator, thereby not only improving the uniformity of frosting on the evaporator and shortening the defrosting time, but also improving the heat exchange efficiency of the evaporator.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and in particular to an evaporator frost amount regulating component, an evaporator, a heat exchange equipment and a control method. Background Art

[0002] The evaporator is a key component of heat exchange equipment. Traditional evaporators feature a flow divider at the evaporator inlet, which separates the refrigerant entering the copper tube fins. However, due to factors such as gravity and centrifugal force, the refrigerant distribution is uneven across the various branches, resulting in uneven frost formation on the evaporator and compromising its heat exchange efficiency. Specifically, pipes with higher refrigerant volumes experience thicker frost, while pipes with lower volumes experience thinner frost. Furthermore, the fixed position of the evaporating fan in traditional heat exchange equipment results in uneven airflow distribution across the evaporator, further exacerbating this uneven frost formation. Specifically, areas of the evaporator receiving higher airflow experience thicker frost, while areas receiving lower airflow experience thinner frost. Due to this uneven frost formation, traditional evaporators require a longer defrost time to fully defrost the evaporator, significantly increasing energy consumption.

[0003] In order to solve the problem of uneven frosting on the evaporator, the evaporator in the prior art achieves this by adjusting the length of the flow path. Specifically, through experiments, it was found that in areas where the frost is thicker, the length of the flow path is increased, so that the frosting speed at that location slows down and the amount of frost is reduced; in areas where the frost is thinner, the length of the flow path is shortened, so that the frosting speed at that location speeds up and the amount of frost is increased. By repeated adjustments, the uniformity of frosting in each branch is achieved. Although this method can solve the problem of uneven frosting on the evaporator, it is time-consuming and labor-intensive, and the flow path is complicated. In addition, this method cannot solve the problem of uneven refrigerant distribution in each branch of the evaporator. Therefore, there is a need to improve the evaporator in the prior art. Summary of the Invention

[0004] One of the objectives of the present invention is to provide an evaporator frost adjustment assembly that addresses the prior art technical issues of uneven refrigerant distribution across the evaporator branches, resulting in uneven frost formation and low heat exchange efficiency. The various technical benefits of the preferred technical solution of the present invention are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The evaporator frost amount regulating component of the present invention includes a flow distribution valve, which is arranged between the liquid inlet pipe and the liquid inlet branch of the evaporator. The flow distribution valve has multiple independent valve ports, and the multiple valve ports are respectively connected to the multiple liquid inlet branches of the evaporator. The flow of the valve port is determined based on the refrigerant parameters of each branch, and the refrigerant amount of each branch is made equivalent.

[0007] According to a preferred embodiment, the evaporator frost amount adjustment component also includes a temperature detection component, which is arranged at multiple air outlet branches of the evaporator. The temperature detection component is used to detect the temperature of the air outlet branch, and the flow rate of the valve port is determined based on the detection result of the temperature detection component.

[0008] According to a preferred embodiment, the refrigerant flow in the liquid inlet branch and the temperature measured by the corresponding temperature detection component satisfy: Q = arctan (T), wherein: Q is the refrigerant flow in the liquid inlet branch, and T is the temperature measured by the temperature detection component corresponding to the liquid inlet branch.

[0009] According to a preferred embodiment, the evaporator frost amount adjustment component also includes an evaporator fan, which is rotatably arranged at the heat exchange part of the evaporator. The air outlet angle of the evaporator fan is adjusted based on the detection result of the temperature detection component, and the frost amount of each branch is made the same.

[0010] According to a preferred embodiment, the evaporator fan includes a fan blade, a first shell, a movable ring and a second shell, wherein the fan blade is fixed in the first shell, the first shell is rotatably connected to the movable ring, and the movable ring is rotatably connected to the second shell.

[0011] According to a preferred embodiment, the evaporator fan also includes a first reversing shaft, which is arranged between the movable ring and the second shell, one end of the first reversing shaft is fixedly connected to one of the movable ring and the second shell, and the other end of the first reversing shaft is rotatably connected to the other of the movable ring and the second shell.

[0012] According to a preferred embodiment, the evaporator fan also includes a second reversing shaft, which is arranged between the first shell and the movable ring, one end of the second reversing shaft is fixedly connected to the first shell and one of the movable ring, and the other end of the second reversing shaft is rotatably connected to the other of the first shell and the movable ring.

[0013] According to a preferred embodiment, the evaporator fan further includes a sealing sleeve, which is arranged in a circumferential direction of the second shell.

[0014] The evaporator frost amount adjustment assembly provided by the present invention has at least the following beneficial technical effects:

[0015] The evaporator frost amount regulating component of the present invention includes a flow distribution valve, which is arranged between the liquid inlet pipe and the liquid inlet branch of the evaporator. The flow distribution valve has multiple independent valve ports, and the multiple valve ports are respectively connected to the multiple liquid inlet branches of the evaporator. The flow of each valve port is determined based on the refrigerant parameters of each branch, and the refrigerant amount of each branch is made equivalent. It can be seen that the evaporator frost amount regulating component of the present invention, the flow of the valve port is determined based on the refrigerant parameters of each branch, and the refrigerant amount of each branch of the evaporator can be evenly distributed, thereby not only improving the uniformity of frost on the evaporator and shortening the defrosting time, but also improving the heat exchange efficiency of the evaporator. That is, the evaporator frost amount regulating component of the present invention solves the problem of uneven refrigerant distribution in each branch of the evaporator in the prior art, resulting in uneven frost on the evaporator and low heat exchange efficiency.

[0016] A second object of the present invention is to provide an evaporator.

[0017] The evaporator of the present invention comprises the evaporator frost amount regulating component described in any one of the technical solutions of the present invention.

[0018] The evaporator provided by the present invention has at least the following beneficial technical effects:

[0019] The evaporator of the present invention includes the evaporator frost amount regulating component of any technical solution in the present invention. Through the function of the evaporator frost amount regulating component, not only the uniformity of frost on the evaporator can be improved and the defrosting time can be shortened, but also the heat exchange efficiency of the evaporator can be improved.

[0020] The third object of the present invention is to provide a heat exchange device.

[0021] The heat exchange equipment of the present invention includes the evaporator described in any technical solution of the present invention.

[0022] The heat exchange equipment provided by the present invention has at least the following beneficial technical effects:

[0023] The heat exchange equipment of the present invention includes the evaporator of any technical solution of the present invention. Since the frosting uniformity of the evaporator is improved, the defrosting time is shortened, and the heat exchange efficiency is improved, the performance of the heat exchange equipment can be improved.

[0024] A fourth object of the present invention is to provide a control method for an evaporator frost amount regulating assembly.

[0025] The control method of the evaporator frost amount regulating assembly according to any one of the technical solutions of the present invention comprises the following steps:

[0026] Obtain the refrigerant parameters of each branch of the evaporator;

[0027] Compare the obtained refrigerant parameters of each branch with the parameter setting values;

[0028] The opening of the valve port is controlled based on the comparison result of the obtained refrigerant parameters of each branch and the parameter setting value, so that the refrigerant amount of each branch is equal.

[0029] According to a preferred embodiment, the refrigerant parameter is the temperature at each outlet branch, the parameter setting value is the temperature setting value, and when the temperature at the outlet branch is greater than the temperature setting value, the opening of the valve port corresponding to the outlet branch is controlled to increase, and when the temperature at the outlet branch is less than the temperature setting value, the opening of the valve port corresponding to the outlet branch is controlled to decrease.

[0030] According to a preferred embodiment, the temperature setting value is calculated by the following formula: T = (T1 + T2 ... + T n ) / n, where T is the temperature setting value, T1, T2…T n They are respectively the temperature at the first outlet branch, the temperature at the second outlet branch...the temperature at the nth outlet branch, where n is the number of outlet branches.

[0031] According to a preferred embodiment, the control method of the evaporator frost amount regulating component further includes the following steps: based on the comparison results of the obtained temperatures at each outlet branch and the temperature setting value, controlling the air outlet direction of the evaporator fan and making the frost amount of each branch the same.

[0032] According to a preferred embodiment, when the temperature at the air outlet branch is greater than the temperature setting value, the air outlet direction of the evaporator fan is controlled toward the air outlet branch; when the temperature at the air outlet branch is less than the temperature setting value, the air outlet direction of the evaporator fan is controlled away from the air outlet branch.

[0033] The control method of the evaporator frost amount regulating assembly provided by the present invention has at least the following beneficial technical effects:

[0034] The control method of the evaporator frost amount regulating component of the present invention includes obtaining the refrigerant parameters of each branch of the evaporator, comparing the obtained refrigerant parameters of each branch with the parameter setting values, controlling the opening of the valve port based on the comparison results of the obtained refrigerant parameters of each branch with the parameter setting values, and making the refrigerant amount of each branch equivalent. The steps can evenly distribute the refrigerant amount of each branch of the evaporator, thereby not only improving the uniformity of frosting of the evaporator and shortening the defrosting time, but also improving the heat exchange efficiency of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0036] Figure 1 is a schematic diagram of a preferred embodiment of the heat exchange device of the present invention;

[0037] Figure 2 is a first schematic diagram of a preferred embodiment of the evaporator of the present invention;

[0038] Figure 3 is a second schematic diagram of a preferred embodiment of the evaporator of the present invention;

[0039] Figure 4 is a third schematic diagram of a preferred embodiment of the evaporator of the present invention;

[0040] Figure 5 is a schematic diagram of a preferred embodiment of the evaporator fan of the present invention;

[0041] Figure 6 This is a graph showing the relationship between the temperature at the outlet branch and the amount of refrigerant in each branch of the present invention;

[0042] Figure 7 It is a flow chart of a preferred embodiment of the control method of the evaporator frost amount regulating component of the present invention;

[0043] Figure 8 It is a flow chart of another preferred embodiment of the control method of the evaporator frost amount regulating component of the present invention.

[0044] In the figure: 101, flow distribution valve; 102, temperature detection component; 103, evaporator fan; 1031, fan blade; 1032, first shell; 1033, movable ring; 1034, second shell; 1035, first reversing shaft; 1036, second reversing shaft; 1037, sealing sleeve; 200, evaporator; 201, liquid inlet pipe; 202, liquid inlet branch; 203, air outlet branch; 204, heat exchange part; 205, gas collecting pipe; 206, air outlet pipe; 207, evaporator shell; 300, compressor; 400, condenser; 500, electronic expansion valve. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0046] The following is attached with the instruction manual Figures 1 to 8 And embodiments 1 to 4 provide detailed descriptions of the evaporator frost amount adjustment component, evaporator, heat exchange equipment and control method of the present invention.

[0047] Example 1

[0048] This embodiment describes in detail the evaporator frost amount adjustment component of the present invention.

[0049] The evaporator frost amount regulating assembly of this embodiment includes a flow distribution valve 101, such as Figure 1 or Figure 2 Preferably, the flow distribution valve 101 is arranged between the liquid inlet pipe 201 and the liquid inlet branch 202 of the evaporator 200. The flow distribution valve 101 has multiple independent valve ports, each of which can adjust the opening size independently. The multiple valve ports are respectively connected to the multiple liquid inlet branches 202 of the evaporator 200. The flow rate of each valve port is determined based on the refrigerant parameters of each branch, and the refrigerant amount of each branch is made equivalent, as shown in FIG. Figure 1 or Figure 2 As shown. The number of valve ports corresponds to the number of liquid inlet branches 202, and there is a one-to-one correspondence between the valve ports and the liquid inlet branches 202. More preferably, the flow distribution valve 101 is a constant pressure flow distribution valve, which maintains a constant pressure to ensure the reliability of the evaporator 200. More preferably, the refrigerant parameters of each branch include but are not limited to the refrigerant flow rate, the refrigerant flow path length, and / or the refrigerant temperature at the outlet of the evaporator 200.

[0050] The evaporator frost amount regulating assembly of this embodiment includes a flow distribution valve 101, which is arranged between the liquid inlet pipe 201 and the liquid inlet branch 202 of the evaporator 200. The flow distribution valve 101 has multiple independent valve ports, each of which is connected to the multiple liquid inlet branches 202 of the evaporator 200. The flow rate of the valve ports is determined based on the refrigerant parameters of each branch, and the refrigerant amount of each branch is made equivalent. It can be seen that the evaporator frost amount regulating assembly of this embodiment determines the flow rate of the valve ports based on the refrigerant parameters of each branch, which can evenly distribute the refrigerant amount of each branch of the evaporator 200, thereby not only improving the uniformity of frosting on the evaporator 200 and shortening the defrosting time, but also improving the heat exchange efficiency of the evaporator 200. In other words, the evaporator frost amount regulating assembly of this embodiment solves the problem of uneven refrigerant distribution between the branches of the evaporator in the prior art, resulting in uneven frost formation and low heat exchange efficiency.

[0051] According to a preferred embodiment, the evaporator frost amount regulating assembly further includes a temperature detecting member 102, such as Figure 1 or Figure 2 Preferably, the temperature detection element 102 is provided at the plurality of outlet branches 203 of the evaporator 200. The temperature detection element 102 is used to detect the temperature of the outlet branch 203. The flow rate of the valve port is determined based on the detection result of the temperature detection element 102. Figure 1 or Figure 2 As shown. More preferably, the number of temperature detection components 102 is equal to the number of air outlet branches 203, and the temperature detection components 102 correspond to the air outlet branches 203 one-to-one. The temperature detection component 102 is a temperature sensing package. The evaporator frost amount adjustment component of the preferred technical solution of this embodiment can measure the temperature of the air outlet branch 203 through the temperature detection component 102 provided at the air outlet branch 203, so that the uniformity of the refrigerant distribution in each branch can be judged based on the measured temperature, so as to provide a basis for adjusting the size of the valve opening.

[0052] According to a preferred embodiment, the refrigerant flow rate in the liquid inlet branch 202 and the temperature measured by the corresponding temperature detection element 102 satisfy: Q = arctan (T), where: Q is the refrigerant flow rate in the liquid inlet branch 202, T is the temperature measured by the temperature detection element 102 corresponding to the liquid inlet branch 202, such as Figure 6As shown. In the evaporator frost amount regulating assembly of the preferred technical solution of this embodiment, the refrigerant flow rate in the liquid inlet branch 202 and the temperature measured by the corresponding temperature detection element 102 satisfy the relationship: Q = arctan (T). That is, when the temperature measured by the temperature detection element 102 is high, the refrigerant flow rate in the corresponding liquid inlet branch 202 needs to be increased; when the temperature measured by the temperature detection element 102 is low, the refrigerant flow rate in the corresponding liquid inlet branch 202 needs to be reduced. At the same time, the refrigerant flow rate in the liquid inlet branch 202 and the temperature measured by the corresponding temperature detection element 102 satisfy the relationship: Q = arctan (T). The refrigerant flow rate in the liquid inlet branch 202 can also have maximum and minimum values, avoiding the problem of the refrigerant flow rate in the liquid inlet branch 202 increasing or decreasing infinitely, thereby ensuring the reliability of the operation of the evaporator 200.

[0053] According to a preferred embodiment, the evaporator frost amount regulating component further includes an evaporator fan 103, such as Figures 2 to 4 As shown. Preferably, the evaporator fan 103 is rotatably arranged at the heat exchange part 204 of the evaporator 200, and the air outlet angle of the evaporator fan 103 is adjusted based on the detection result of the temperature detection part 102, and the frost amount of each branch is made the same. Specifically, when the temperature measured by the temperature detection part 102 is high, the air volume at the branch can be increased; when the temperature measured by the temperature detection part 102 is low, the air volume at the branch can be reduced. Preferably, the heat exchange part 204 is a copper tube fin. The number of evaporator fans 103 is at least one. For example, the number of evaporator fans 103 is two, such as Figure 4 As shown. The evaporator frost adjustment assembly of the preferred technical solution of this embodiment also includes an evaporator fan 103. By adjusting the air outlet angle of the evaporator fan 103, the problem of uneven air volume distribution can be avoided, further improving the uniformity of frosting on the evaporator 200, further shortening the defrosting time, and improving the heat exchange efficiency of the evaporator 200. It can be seen that the evaporator frost adjustment assembly of the preferred technical solution of this embodiment solves the problem of uneven air volume distribution on the evaporator caused by the fixed position of the evaporator fan in traditional heat exchange equipment, which further exacerbates the uneven evaporator frosting.

[0054] According to a preferred embodiment, the evaporator fan 103 includes a fan blade 1031, a first housing 1032, a movable ring 1033 and a second housing 1034, wherein the fan blade 1031 is fixed in the first housing 1032, the first housing 1032 is rotatably connected to the movable ring 1033, and the movable ring 1033 is rotatably connected to the second housing 1034. Figure 5The evaporator frost amount adjustment assembly of the preferred technical solution of this embodiment has a first housing 1032 rotatably connected to the movable ring 1033, and the movable ring 1033 rotatably connected to the second housing 1034, thereby adjusting the air outlet direction of the evaporator fan 103 to different directions, thereby improving the uniformity of frosting on the evaporator 200, shortening the defrosting time, and improving the heat exchange efficiency of the evaporator 200.

[0055] According to a preferred embodiment, the evaporator fan 103 further includes a first reversing shaft 1035, which is disposed between the movable ring 1033 and the second housing 1034. One end of the first reversing shaft 1035 is fixedly connected to one of the movable ring 1033 and the second housing 1034, and the other end of the first reversing shaft 1035 is rotatably connected to the other of the movable ring 1033 and the second housing 1034. Figure 5 As shown. Preferably, the number of the first reversing shafts 1035 is two, and the two first reversing shafts 1035 are symmetrically arranged. Preferably, one end of the first reversing shaft 1035 is fixedly connected to the second shell 1034, and the other end of the first reversing shaft 1035 is rotatably connected to the movable ring 1033 through a bearing. When it is necessary to adjust the air outlet angle in the front and rear directions of the evaporator fan 103, the motor drives the first reversing shaft 1035 to rotate around the X-axis, so that the movable ring 1033 can be driven to rotate around the X-axis through the first reversing shaft 1035, and then the fan blades 1031 and the first shell 1032 can be driven to rotate around the X-axis through the movable ring 1033. The evaporator frost amount adjustment component of the preferred technical solution of this embodiment realizes the adjustment of the front and rear air outlet angles of the evaporator fan 103 through the first reversing shaft 1035, and has the advantages of simple reversing structure and high adjustment reliability.

[0056] According to a preferred embodiment, the evaporator fan 103 further includes a second reversing shaft 1036, which is disposed between the first housing 1032 and the movable ring 1033. One end of the second reversing shaft 1036 is fixedly connected to one of the first housing 1032 and the movable ring 1033, and the other end of the second reversing shaft 1036 is rotatably connected to the other of the first housing 1032 and the movable ring 1033. Figure 5As shown. Preferably, the number of the second reversing shafts 1036 is two, and the two second reversing shafts 1036 are symmetrically arranged. Preferably, one end of the second reversing shaft 1036 is fixedly connected to the first housing 1032, and the other end of the second reversing shaft 1036 is rotatably connected to the movable ring 1033 through a bearing. When it is necessary to adjust the air outlet angle of the evaporator fan 103 in the left and right directions, the motor drives the second reversing shaft 1036 to rotate around the Y axis, and the movable ring 1033 is fixed, so that the fan blades 1031 and the first housing 1032 can be driven to rotate around the Y axis through the second reversing shaft 1036. The evaporator frost amount adjustment component of the preferred technical solution of this embodiment realizes the adjustment of the left and right air outlet angles of the evaporator fan 103 through the second reversing shaft 1036, and has the advantages of simple reversing structure and high adjustment reliability.

[0057] For example: when the air volume of the branch above the evaporator 200 needs to be increased, the motor drives the first reversing shaft 1035 to rotate counterclockwise, so that the air outlet angle of the evaporator fan 103 is adjusted toward the front of the evaporator 200, so that the center of the evaporator fan 103 is facing the branch above the evaporator 200, thereby increasing the air volume of the branch above the evaporator 200; when the air volume of the branch above the evaporator 200 needs to be reduced, the motor drives the first reversing shaft 1035 to rotate clockwise, so that the air outlet angle of the evaporator fan 103 is adjusted toward the rear of the evaporator 200, thereby making the center of the evaporator fan 103 away from the branch above the evaporator 200, thereby reducing the air volume of the branch above the evaporator 200. The amount of air to be blown away by the fan is reduced; when the air volume on the left side of the evaporator 200 branch needs to be increased, the motor drives the second reversing shaft 1036 to rotate counterclockwise, so that the air outlet angle of the evaporator fan 103 is adjusted to the left side of the evaporator 200, so that the center of the evaporator fan 103 is facing the left side of the evaporator 200 branch, thereby increasing the air volume on the left side of the evaporator 200 branch; when the air volume on the left side of the evaporator 200 branch needs to be reduced, the motor drives the second reversing shaft 1036 to rotate clockwise, so that the air outlet angle of the evaporator fan 103 is adjusted to the right side of the evaporator 200, thereby moving the center of the evaporator fan 103 away from the left side of the evaporator 200 branch, thereby reducing the air volume on the left side of the evaporator 200 branch.

[0058] According to a preferred embodiment, the evaporator fan 103 further includes a sealing sleeve 1037, which is arranged in the circumferential direction of the second shell 1034. Figure 3 and Figure 4 As shown. Preferably, the sealing sleeve 1037 is a rubber sealing sleeve. In the preferred technical solution of this embodiment, the evaporator frost adjustment assembly generates a certain gap around the evaporator fan 103 when the evaporator fan 103 adjusts the air outlet angle. The sealing sleeve 1037, which is arranged circumferentially on the second housing 1034, ensures the air outlet volume of the evaporator fan 103, effectively preventing air leakage.

[0059] Example 2

[0060] This embodiment describes the evaporator of the present invention in detail.

[0061] The evaporator of this embodiment includes the evaporator frost amount adjustment component of any technical solution in embodiment 1, such as Figures 1 to 4 The rest of the structure of the evaporator is the same as that of the prior art and will not be described in detail here.

[0062] Specifically, such as Figure 1 or Figure 2 As shown, the evaporator 200 includes an evaporator shell 207, and a heat exchange part 204 is arranged in the evaporator shell 207. One end of the heat exchange part 204 is provided with a liquid inlet pipe 201 and a liquid inlet branch 202, and a flow distribution valve 101 is also provided between the liquid inlet pipe 201 and the liquid inlet branch 202; the other end of the heat exchange part 204 is provided with an outlet branch 203, an air collecting pipe 205 and an outlet pipe 206, and each outlet branch 203 is provided with a temperature detection component 102. In the evaporator 200, the flow direction of the refrigerant is as follows: the refrigerant enters the flow distribution valve 101 through the liquid inlet pipe 201 of the evaporator 200, and then flows into the liquid inlet branches 202 through the valve ports of the flow distribution valve 101. The refrigerant enters the heat exchange part 204 through the liquid inlet branches 202 and evaporates into gas after heat exchange, and then flows into the gas collecting pipe 205 from the gas outlet branches 203, and then flows out from the gas outlet pipe 206 through the gas collecting pipe 205.

[0063] The evaporator of this embodiment includes the evaporator frost amount regulating component of any technical solution in Example 1. Through the function of the evaporator frost amount regulating component, not only the uniformity of frost on the evaporator can be improved and the defrosting time can be shortened, but also the heat exchange efficiency of the evaporator can be improved.

[0064] Example 3

[0065] This embodiment describes the heat exchange equipment of the present invention in detail.

[0066] The heat exchange device of this embodiment includes the evaporator of any one of the technical solutions in Example 2, such as Figure 1 As shown. The heat exchange device is, for example, a heating device. The heat exchange device further includes a compressor 300, a condenser 400 and an electronic expansion valve 500. The air outlet of the compressor 300, the condenser 400, the electronic expansion valve 500, the evaporator 200 and the return air port of the compressor 300 are sequentially connected to form a refrigerant circuit, as shown in FIG. Figure 1 shown.

[0067] The heat exchange equipment of this embodiment includes the evaporator of any one of the technical solutions in Example 2. Since the frosting uniformity of the evaporator is improved, the defrosting time is shortened, and the heat exchange efficiency is improved, the performance of the heat exchange equipment can be improved.

[0068] Example 4

[0069] This embodiment describes in detail the control method of the evaporator frost amount adjustment component of the present invention.

[0070] Figure 7 The flowchart of the preferred embodiment of the control method of the evaporator frost amount regulating component of this embodiment is shown. Figure 7 As shown, the control method of the evaporator frost amount adjustment component of any technical solution in Example 1 includes the following steps:

[0071] Step 1: Obtain the refrigerant parameters of each branch of the evaporator 200.

[0072] Step 2: Compare the obtained refrigerant parameters of each branch with the parameter set values.

[0073] Step 3: Based on the comparison result of the obtained refrigerant parameters of each branch and the parameter setting value, the opening of the valve port is controlled to make the refrigerant amount of each branch equal.

[0074] The control method of the evaporator frost amount regulating component of this embodiment includes obtaining the refrigerant parameters of each branch of the evaporator 200, comparing the obtained refrigerant parameters of each branch with the parameter setting values, controlling the opening of the valve port based on the comparison results of the obtained refrigerant parameters of each branch with the parameter setting values, and making the refrigerant amount of each branch equivalent. The steps can evenly distribute the refrigerant amount of each branch of the evaporator 200, thereby not only improving the uniformity of frosting of the evaporator 200 and shortening the defrosting time, but also improving the heat exchange efficiency of the evaporator 200.

[0075] According to a preferred embodiment, the refrigerant parameter is the temperature at each outlet branch 203, the parameter setting value is the temperature setting value, and when the temperature at the outlet branch 203 is greater than the temperature setting value, the opening of the valve port corresponding to the outlet branch 203 is controlled to increase, and when the temperature at the outlet branch 203 is less than the temperature setting value, the opening of the valve port corresponding to the outlet branch 203 is controlled to decrease. Preferably, the temperature setting value is calculated by the following formula: T = (T1 + T2 ... + T n ) / n, where T is the temperature setting value, T1, T2…T nThey are respectively the temperature at the first outlet branch, the temperature at the second outlet branch...the temperature at the nth outlet branch, where n is the number of outlet branches 203. The preferred technical solution of this embodiment is a control method for the frost amount regulating component of the evaporator. When the temperature at the outlet branch 203 is greater than the temperature setting value, it means that the amount of refrigerant allocated to this branch is too small. At this time, the opening of the valve corresponding to the outlet branch 203 is controlled to increase, thereby increasing the amount of refrigerant flowing through the branch, thereby accelerating the frosting speed of the branch and increasing the amount of frost on the branch; when the temperature at the outlet branch 203 is less than the temperature setting value, it means that the amount of refrigerant allocated to this branch is too large. At this time, the opening of the valve corresponding to the outlet branch 203 is controlled to decrease, thereby reducing the amount of refrigerant flowing through the branch, thereby slowing down the frosting speed of the branch and reducing the amount of frost on the branch. The control method of the evaporator frost amount regulating component of the preferred technical solution of this embodiment can evenly distribute the refrigerant amount of each branch of the evaporator 200 based on the opening of the temperature control valve at each outlet branch 203, thereby not only improving the uniformity of frosting of the evaporator 200 and shortening the defrosting time, but also improving the heat exchange efficiency of the evaporator 200.

[0076] According to a preferred embodiment, the control method of the evaporator frost amount regulating component further includes the following steps: based on the comparison result of the temperature at each outlet branch 203 obtained and the temperature setting value, controlling the air outlet direction of the evaporator fan 103 and making the frost amount of each branch the same, such as Figure 8 The preferred technical solution of this embodiment is a control method for the evaporator frost amount adjustment component. Based on the comparison results of the temperatures at each outlet branch 203 and the temperature set value, the air outlet direction of the evaporator fan 103 is controlled, thereby avoiding the problem of uneven air volume distribution, further improving the uniformity of frosting on the evaporator 200, further shortening the defrosting time, and improving the heat exchange efficiency of the evaporator 200.

[0077] According to a preferred embodiment, when the temperature at the outlet branch 203 is greater than the temperature setting value, the air outlet direction of the evaporator fan 103 is controlled to be toward the outlet branch 203; when the temperature at the outlet branch 203 is less than the temperature setting value, the air outlet direction of the evaporator fan 103 is controlled to be away from the outlet branch 203. Figure 8As shown. Specifically, when the temperature at the outlet branch 203 is greater than the temperature setting value, it means that the frost speed of this branch is slow and the amount of frost is small. At this time, controlling the air outlet direction of the evaporator fan 103 toward the outlet branch 203 can accelerate the frost speed and amount of frost at this branch; when the temperature at the outlet branch 203 is less than the temperature setting value, it means that the frost speed of this branch is fast and the amount of frost is large. At this time, controlling the air outlet direction of the evaporator fan 103 away from the outlet branch 203 can slow down the frost speed at this branch and reduce the amount of frost at this branch. It can be seen that the control method of the evaporator frost amount adjustment component of the preferred technical solution of this embodiment controls the air outlet direction of the evaporator fan 103 based on the comparison result of the obtained temperature at each outlet branch 203 and the temperature setting value, thereby further improving the uniformity of frost on the evaporator 200, further shortening the defrosting time and improving the heat exchange efficiency of the evaporator 200.

[0078] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0080] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An evaporator frost amount adjustment component, characterized in that: The invention comprises a flow distribution valve (101), wherein the flow distribution valve (101) is arranged between the liquid inlet pipe (201) and the liquid inlet branch (202) of the evaporator (200), and the flow distribution valve (101) has a plurality of valve ports that are independent of each other, and the plurality of valve ports are respectively connected to the plurality of liquid inlet branches (202) of the evaporator (200), and the flow of the valve ports is determined based on the refrigerant parameters of each branch, so that the refrigerant amount of each branch is equivalent; It also includes a temperature detection element (102), the temperature detection element (102) being arranged at a plurality of gas outlet branches (203) of the evaporator (200), the temperature detection element (102) being used to detect the temperature of the gas outlet branches (203), and the flow rate of the valve port being determined based on the detection result of the temperature detection element (102); The refrigerant flow rate in the liquid inlet branch (202) and the temperature measured by the corresponding temperature detection element (102) satisfy the following relationship: Q = arctan (T), wherein: Q is the refrigerant flow rate in the liquid inlet branch (202), and T is the temperature measured by the temperature detection element (102) corresponding to the liquid inlet branch (202).

2. The evaporator frost amount adjustment assembly according to claim 1, characterized in that: The invention also includes an evaporator fan (103), which is rotatably arranged at the heat exchange portion (204) of the evaporator (200). The air outlet angle of the evaporator fan (103) is adjusted based on the detection result of the temperature detection component (102), and the frost amount of each branch is made the same.

3. The evaporator frost amount regulating assembly according to claim 2, characterized in that: The evaporator fan (103) comprises a fan blade (1031), a first shell (1032), a movable ring (1033) and a second shell (1034), wherein the fan blade (1031) is fixed in the first shell (1032), the first shell (1032) and the movable ring (1033) are rotatably connected, and the movable ring (1033) and the second shell (1034) are rotatably connected.

4. The evaporator frost amount regulating assembly according to claim 3, characterized in that: The evaporator fan (103) also includes a first reversing shaft (1035), which is arranged between the movable ring (1033) and the second shell (1034), one end of the first reversing shaft (1035) is fixedly connected to one of the movable ring (1033) and the second shell (1034), and the other end of the first reversing shaft (1035) is rotatably connected to the other of the movable ring (1033) and the second shell (1034).

5. The evaporator frost amount regulating assembly according to claim 3, characterized in that: The evaporator fan (103) also includes a second reversing shaft (1036), which is arranged between the first housing (1032) and the movable ring (1033), one end of the second reversing shaft (1036) is fixedly connected to one of the first housing (1032) and the movable ring (1033), and the other end of the second reversing shaft (1036) is rotatably connected to the other of the first housing (1032) and the movable ring (1033).

6. The evaporator frost amount regulating assembly according to claim 3, characterized in that: The evaporator fan (103) further comprises a sealing sleeve (1037), and the sealing sleeve (1037) is arranged in the circumferential direction of the second shell (1034).

7. An evaporator, characterized in that: The evaporator frost amount regulating component comprises the evaporator frost amount regulating component according to any one of claims 1 to 6.

8. A heat exchange device, characterized in that: Comprising the evaporator according to claim 7.

9. A method for controlling an evaporator frost amount regulating assembly according to any one of claims 1 to 6, characterized in that: The steps include: Obtaining refrigerant parameters of each branch of the evaporator (200); Compare the obtained refrigerant parameters of each branch with the parameter setting values; The opening of the valve port is controlled based on the comparison result of the obtained refrigerant parameters of each branch and the parameter setting value, so that the refrigerant amount of each branch is equal.

10. The control method of the evaporator frost amount regulating assembly according to claim 9, characterized in that: The refrigerant parameter is the temperature at each outlet branch (203), and the parameter setting value is the temperature setting value. When the temperature at the outlet branch (203) is greater than the temperature setting value, the opening of the valve port corresponding to the outlet branch (203) is controlled to increase. When the temperature at the outlet branch (203) is less than the temperature setting value, the opening of the valve port corresponding to the outlet branch (203) is controlled to decrease.

11. The control method of the evaporator frost amount regulating assembly according to claim 10, characterized in that: The temperature setting value is calculated by the following formula: T = (T1 + T2 ... + T n ) / n, where T is the temperature setting value, T1, T2…T n They are respectively the temperature at the first outlet branch, the temperature at the second outlet branch, ... the temperature at the nth outlet branch, where n is the number of outlet branches (203).

12. The control method of the evaporator frost amount regulating assembly according to claim 10, characterized in that: The method further comprises the following steps: based on the comparison result between the obtained temperature at each air outlet branch (203) and the temperature setting value, controlling the air outlet direction of the evaporator fan (103) and making the frost amount of each branch the same.

13. The control method of the evaporator frost amount regulating assembly according to claim 12, characterized in that: When the temperature at the air outlet branch (203) is greater than the temperature setting value, the air outlet direction of the evaporator fan (103) is controlled to be toward the air outlet branch (203); when the temperature at the air outlet branch (203) is less than the temperature setting value, the air outlet direction of the evaporator fan (103) is controlled to be away from the air outlet branch (203).

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