Heat exchanger assembly and air conditioner

Abstract

The utility model provides a heat exchanger assembly and an air conditioner, the heat exchanger assembly comprises an evaporator assembly and a surface air cooler assembly, refrigerant is introduced into a heat exchange tube of the evaporator assembly, chilled water is introduced into a heat exchange tube of the surface air cooler assembly, and the evaporator assembly and the surface air cooler assembly are connected into a whole. The evaporator assembly is located at the upstream position of the surface air cooler assembly in the air flowing direction, when chilled water is mainly used for refrigeration, the surface air cooler assembly works, the evaporator assembly does not work, and air passes through the evaporator assembly to be not cooled and then passes through the surface air cooler assembly to be cooled. According to the utility model, the refrigeration effect is not worsened under the condition that the energy efficiency and the refrigeration performance are considered at the same time, and the required refrigeration effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, concretely relates to a heat exchanger assembly, air conditioner. BACKGROUND

[0002] The double cold source machine room special air conditioning unit provides functions such as air circulation, air circulation, air filtration, cooling, reheating and humidity control for computer room, switch room, data machine room, transmission machine room, power machine room, electronic machine room and electronic equipment room, to ensure that the equipment environment meets the normal use demand.

[0003] Because the air conditioning refrigeration equipment in the prior art has the technical problems of being unable to simultaneously consider energy efficiency and refrigeration performance and poor refrigeration effect, the utility model researches and designs a heat exchanger assembly and air conditioner. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model wants to solve the technical problem in the prior art air conditioning refrigeration equipment has the defect of being unable to simultaneously consider energy efficiency and refrigeration performance and poor refrigeration effect, to provide a heat exchanger assembly and air conditioner.

[0005] In order to solve the above problem, the utility model provides a heat exchanger assembly, which comprises:

[0006] The evaporator assembly and the surface cooler assembly, the heat exchange pipe of the evaporator assembly is connected with the refrigerant, so that the air can exchange heat with the refrigerant when passing through the evaporator assembly, the heat exchange pipe of the surface cooler assembly is connected with the chilled water, so that the air can exchange heat with the chilled water when passing through the surface cooler assembly, the evaporator assembly and the surface cooler assembly are connected as a whole, and the evaporator assembly is located at the upstream position of the surface cooler assembly along the air flow direction, when the chilled water refrigeration is mainly used, the surface cooler assembly works and the evaporator assembly does not work, the air is first cooled by the evaporator assembly and then cooled by the surface cooler assembly.

[0007] In some embodiments,

[0008] When the refrigerant refrigeration is mainly used, the surface cooler assembly does not work and the evaporator assembly works, the air is first cooled by the evaporator assembly and then not cooled by the surface cooler assembly, and the refrigerant flow or flow rate flowing through the evaporator assembly can be adjusted.

[0009] In some embodiments,

[0010] The evaporator assembly is of a plate structure, the surface cooler assembly is also of a plate structure, and the gap between the evaporator assembly and the surface cooler assembly has a size greater than 0.

[0011] In some embodiments,

[0012] The size of the gap is 15 mm ± 5 mm.

[0013] In some embodiments,

[0014] The evaporator assembly is at least two, including a first evaporator assembly and a second evaporator assembly, and the surface cooler assembly is also at least two, including a first surface cooler assembly and a second surface cooler assembly, the first evaporator assembly and the first surface cooler assembly are assembled into one, forming a first group of heat exchange assemblies; the second evaporator assembly and the second surface cooler assembly are assembled into one, forming a second group of heat exchange assemblies.

[0015] Further comprising an electrical appliance box, the first group of heat exchange assemblies and the second group of heat exchange assemblies are spaced apart to form a containing space, so as to accommodate the electrical appliance box therein, the first evaporator assembly is away from the containing space relative to the first surface cooler assembly, the second evaporator assembly is away from the containing space relative to the second surface cooler assembly, the air on one side of the first group of heat exchange assemblies enters the containing space after flowing through the first surface cooler assembly from the first evaporator assembly, and the air on one side of the second group of heat exchange assemblies enters the containing space after flowing through the second surface cooler assembly from the second evaporator assembly.

[0016] In some embodiments,

[0017] The first surface cooler assembly and the second surface cooler assembly are opposite to each other and sandwich the containing space therebetween, and the distance between the first surface cooler assembly and the second surface cooler assembly in the horizontal direction gradually increases from top to bottom, forming a structure that the horizontal cross-sectional area of the containing space gradually increases from top to bottom.

[0018] In some embodiments,

[0019] The leeward surface of the first surface condenser component faces the containing space, the leeward surface of the second surface condenser component faces the containing space, the leeward surface of the first surface condenser component forms an inclined angle greater than 0 and less than 90° with the horizontal plane, the leeward surface of the second surface condenser component forms an inclined angle greater than 0 and less than 90° with the horizontal plane, and from bottom to top, the leeward surface of the first surface condenser component gradually extends towards the direction of the leeward surface of the second surface condenser component, and the leeward surface of the second surface condenser component gradually extends towards the direction of the leeward surface of the first surface condenser component, so that the leeward surface of the first surface condenser component and the leeward surface of the second surface condenser component form a triangular or trapezoidal structure that is large at the top and small at the bottom in the longitudinal section.

[0020] In some embodiments,

[0021] When the evaporator component is a plate structure and the surface condenser component is also a plate structure, the first evaporator component, the second evaporator component, the first surface condenser component and the second surface condenser component are all plate structures, the leeward surface of the first surface condenser component is parallel to the windward surface of the first surface condenser component, the leeward surface of the second surface condenser component is parallel to the windward surface of the second surface condenser component, the leeward surface of the first evaporator component is parallel to the windward surface of the first evaporator component, the leeward surface of the second evaporator component is parallel to the windward surface of the second evaporator component, and the leeward surface of the first evaporator component is opposite to and parallel to the windward surface of the first surface condenser component, and a gap with a size greater than 0 is formed between the two, and the leeward surface of the second evaporator component is opposite to and parallel to the windward surface of the second surface condenser component, and a gap with a size greater than 0 is formed between the two.

[0022] In some embodiments,

[0023] The air outlet of the containing space is located at least at the bottom end thereof, so that the air flow entering the containing space is discharged from the bottom end of the containing space.

[0024] The containing space is further provided with a front door plate, and the electric appliance box is arranged in close contact with the front door plate and located outside the front door plate, that is, the electric appliance box is away from the central position of the containing space relative to the front door plate.

[0025] The utility model further provides a kind of air conditioner, it includes the heat exchanger component of preceding description.

[0026] The heat exchanger component and the air conditioner provided by the utility model have the following beneficial effects:

[0027] 1.The utility model discloses a refrigeration system, which comprises an evaporator assembly and a surface cooler assembly, and the evaporator assembly and the surface cooler assembly are connected as a whole.

[0028] 2.When the refrigeration system uses refrigerant as the main refrigerant, the air is cooled by the evaporator first, and then enters the surface cooler, and the air may be heated by the heat exchanger in the surface cooler at this time. At this time, the refrigerant flow or flow rate of the evaporator assembly is adjusted to increase the refrigeration capacity of the evaporator, so that the air after passing through the surface cooler can meet the required indoor temperature, and the refrigeration effect will not be poor. Therefore, the evaporator is arranged upstream of the surface cooler along the air flow direction, and the evaporator can be adjusted when the refrigerant is used as the main refrigerant, so that the refrigeration effect can be ensured in various refrigeration modes of using refrigerant or refrigerant as the main refrigerant. The refrigeration effect will not be poor while the energy efficiency and the refrigeration performance are considered, and the required refrigeration effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a front view of the heat exchanger assembly of the utility model;

[0030] Figure 2 is a structure schematic view of the heat exchanger assembly of the utility model showing a gap;

[0031] Figure 3 is a structure schematic view of the heat exchanger assembly of the utility model showing the air flow direction (wind direction);

[0032] Figure 4 is an exploded structure schematic view of the heat exchanger assembly of the utility model with the electric appliance box removed;

[0033] Figure 5 isFigure 4 Structure diagram of front door plate in the refrigerator.

[0034] Reference signs are indicated as:

[0035] 1, evaporator assembly; 11, first evaporator assembly; 12, second evaporator assembly; 2, surface condenser assembly; 21, first surface condenser assembly; 22, second surface condenser assembly; 3, containing space; 4, electrical box; 5, front door plate; 6, gap; 7, fin. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0037] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0038] Unless specifically stated otherwise, the relative arrangements of the components and steps illustrated in these embodiments and the numerical expressions and values set forth herein are not limiting. It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the description of the application. In all examples shown and discussed herein, any specific value should be interpreted as merely illustrative and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0039] In the description of the utility model, it is understood that the orientation words such as '' front, back, top, bottom, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship usually based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply the device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it can not be understood as the limitation of the protection scope of the utility model;The orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0040] For the convenience of description, spatial relative terms such as '' above'', '' above'', '' upper surface'', '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the exemplary term '' above '' can include both '' above '' and '' below ''. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0041] In addition, it should be noted that the use of '' first'', '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it can not be understood as the limitation of the protection scope of the utility model.

[0042] As Figures 1-5 The utility model provides a kind of heat exchanger assembly, it includes:

[0043] Evaporator assembly 1 and surface cooler assembly 2, the refrigerant is passed into the heat exchange tube of the evaporator assembly 1, so that air can be heat exchanged with refrigerant when passing through the evaporator assembly 1, the chilled water is passed into the heat exchange tube of the surface cooler assembly 2, so that air can be heat exchanged with chilled water when passing through the surface cooler assembly 2, the evaporator assembly 1 and the surface cooler assembly 2 are connected as a whole, and the evaporator assembly 1 is located at the upstream position of the surface cooler assembly 2 along the air flow direction, when refrigeration with chilled water is mainly, the surface cooler assembly 2 works and the evaporator assembly 1 does not work, air is first not cooled by the evaporator assembly 1 and then cooled by the surface cooler assembly 2.

[0044] The two different refrigeration modes in the prior art use different structures, and it is difficult to simultaneously place them in one space during structural combination, but the utility model discloses a structure that connects the evaporator assembly and the surface cooler assembly into one, and can select whether to mainly use refrigerated water refrigeration or refrigerant refrigeration according to the need or the temperature of the refrigerated water, and when mainly using refrigerated water refrigeration, the evaporator is closed, the energy consumption required for refrigerant refrigeration can be reduced under the condition of providing refrigeration, the energy efficiency of the system is improved, and when refrigerant refrigeration is mainly used under the condition that the temperature of the refrigerated water is too high to meet the refrigeration, the surface cooler is closed, the refrigeration capacity and temperature required by the indoor environment can be met through refrigerant refrigeration, the energy efficiency and refrigeration performance can be simultaneously considered, and the evaporator assembly is arranged at the upstream position of the surface cooler assembly along the air flow direction, so that the air first passes through the evaporator assembly and then passes through the surface cooler assembly, the evaporator is closed when mainly using refrigerated water, the air passing through the evaporator is not refrigerated, the air after passing through the evaporator enters the surface cooler and is cooled by the refrigerated water, and the temperature of the air cannot be increased (if the air first passes through the surface cooler and then passes through the evaporator, the air is first cooled by the surface cooler, but when entering the evaporator, the heat exchange pipe temperature of the evaporator is higher than the temperature of the air cooled by the surface cooler, the air will be heated without reason, and the refrigeration effect is poor), so that the energy efficiency, the refrigeration performance and the refrigeration effect of the system can be simultaneously considered.

[0045] In some embodiments,

[0046] When mainly using refrigerant refrigeration, the surface cooler assembly 2 does not work, and the evaporator assembly 1 works, the air is first cooled by the evaporator assembly 1 and then not cooled by the surface cooler assembly 2, and the refrigerant flow or flow rate passing through the evaporator assembly 1 can be adjusted.

[0047] When mainly using refrigerant refrigeration, the air is first cooled by the refrigerant of the evaporator, and when entering the surface cooler, the air will be heated by the heat exchanger, at this time, the refrigerant flow or flow rate of the evaporator assembly is adjusted, and the refrigeration capacity of the evaporator is increased, so that the air after passing through the surface cooler can meet the temperature required by the indoor environment, and the refrigeration effect is not poor, so that the refrigeration effect of the refrigeration mode mainly using refrigerated water and the refrigeration mode mainly using refrigerant can be ensured, and the refrigeration effect is not poor under the condition of simultaneously considering the energy efficiency and the refrigeration performance.

[0048] In some embodiments,

[0049] The evaporator assembly 1 is a plate structure, the surface cooler assembly 2 is also a plate structure, and the gap between the evaporator assembly 1 and the surface cooler assembly 2 has a size greater than 0.

[0050] The gap with the size greater than 0 arranged between the evaporator assembly and the surface condenser assembly can effectively prevent air congestion when flowing between the evaporator assembly and the surface condenser assembly, and solve the problem of air blockage of the unit.

[0051] In some embodiments,

[0052] The size of the gap is 15mm±5mm.

[0053] The evaporator assembly and the surface condenser assembly are preferably assembled with a gap of 15±5mm in the middle. In terms of structure, the evaporator assembly and the surface condenser assembly are composed of aluminum foils stacked together to form fins, and a long copper pipe is arranged through the fins. The distance between the aluminum foils is the fin pitch. The temperature is transmitted to the aluminum foils by pipeline refrigeration, and then the air passes through the gap between the aluminum foils to realize refrigeration. The fin pitch is usually between 1.2mm and 2.8mm, and commonly used fin pitches are 1.4mm, 1.8mm, 2mm, etc. The small fin pitch leads to the fact that the evaporator assembly and the surface condenser assembly are prone to misalignment during assembly. If the two are completely spliced without any gap, theoretically, the aluminum foils of the evaporator assembly correspond to the aluminum foils of the surface condenser assembly, and the gaps between the aluminum foils of the evaporator assembly correspond to the gaps between the aluminum foils of the surface condenser assembly. In this way, the air can normally pass through the evaporator assembly and the surface condenser assembly to realize refrigeration. However, the number of aluminum foils is usually several hundred to several thousand, and it is easy for the aluminum foils of the evaporator assembly to correspond to the gaps of the aluminum foils of the surface condenser assembly, so that the air cannot normally pass through, resulting in a significant decrease in refrigeration effect. Therefore, the gap size between the evaporator assembly and the surface condenser assembly is increased to 15±5mm (preferably, the minimum gap size of multiple products can meet 15±5mm) to further effectively prevent air blockage of the evaporator assembly and the surface condenser assembly.

[0054] In some embodiments,

[0055] The evaporator assembly 1 is at least two, including a first evaporator assembly 11 and a second evaporator assembly 12, and the surface condenser assembly 2 is also at least two, including a first surface condenser assembly 21 and a second surface condenser assembly 22. The first evaporator assembly 11 and the first surface condenser assembly 21 are assembled into one body to form a first group of heat exchange assemblies, and the second evaporator assembly 12 and the second surface condenser assembly 22 are assembled into one body to form a second group of heat exchange assemblies.

[0056] Further comprising an electrical appliance box 4, the first group of heat exchange components and the second group of heat exchange components are spaced apart to form a containing space 3 to accommodate the electrical appliance box 4 therein, the first evaporator component 11 is away from the containing space 3 relative to the first surface cooler component 21, the second evaporator component 12 is away from the containing space 3 relative to the second surface cooler component 22, the air on one side of the first group of heat exchange components enters the containing space 3 after flowing through the first surface cooler component 21 from the first evaporator component 11, and the air on one side of the second group of heat exchange components enters the containing space 3 after flowing through the second surface cooler component 22 from the second evaporator component 12.

[0057] The utility model discloses the evaporator component is set to at least two, surface cooler component is set to at least two, and first evaporator component and first surface cooler component are assembled as a whole, form first group of heat exchange components, second evaporator component and second surface cooler component are assembled as a whole, form second group of heat exchange components, and the containing space is formed between two heat exchange group components, and the electrical appliance box is placed in the position of containing space, and the air flow enters the containing space from the first surface cooler component after flowing through the first evaporator component on the outside, simultaneously enters the containing space after flowing through the second surface cooler component from the second evaporator component on the outside, and carries out heat exchange to electrical appliance box, thereby realizes the effect of cooling the electrical appliance box, solves the problem of electrical appliance box heat dissipation, and the electrical appliance box is set up in the position of the containing space, effectively utilizes and saves the space, makes the structure more compact, and the volume can be more miniaturized.

[0058] In some embodiments,

[0059] The first surface cooler component 21 and the second surface cooler component 22 are opposite to each other and the containing space 3 is clamped therebetween, and the distance between the first surface cooler component 21 and the second surface cooler component 22 gradually increases from top to bottom in the horizontal direction, forming a structure with a small upper horizontal cross-sectional area and a large lower horizontal cross-sectional area.

[0060] The utility model further gradually increases the distance between the first and second surface cooler components from top to bottom in the horizontal direction, thereby forming a containing space with a small upper portion and a large lower portion, which can firmly support the heat exchange components on both sides on the ground or the bottom plate of the air conditioner, ensuring the structural stability of the refrigeration equipment and avoiding shaking and other situations during operation, thereby solving the stability problem of the cooperation between the evaporator component and the surface cooler component of the machine room air conditioner.

[0061] In some embodiments,

[0062] The leeward face of the first surface-cooler assembly 21 faces the accommodating space 3, the leeward face of the second surface-cooler assembly 22 faces the accommodating space 3, the leeward face of the first surface-cooler assembly 21 is inclined to the horizontal plane by an angle greater than 0 and less than 90°, the leeward face of the second surface-cooler assembly 22 is inclined to the horizontal plane by an angle greater than 0 and less than 90°, and from bottom to top, the leeward face of the first surface-cooler assembly 21 gradually extends towards the direction of the leeward face of the second surface-cooler assembly 22, and the leeward face of the second surface-cooler assembly 22 gradually extends towards the direction of the leeward face of the first surface-cooler assembly 21, so that in the longitudinal section, the leeward face of the first surface-cooler assembly 21 and the leeward face of the second surface-cooler assembly 22 form a triangular or trapezoidal structure that is large at the bottom and small at the top.

[0063] This is a further preferred structure of the first surface-cooler assembly and the second surface-cooler assembly of the utility model, that is, the two leeward faces gradually extend from bottom to top, effectively forming a triangular or trapezoidal structure that is large at the bottom and small at the top, thereby further effectively ensuring the structural stability of the refrigeration equipment and avoiding shaking and the like during operation, and solving the stability problem of the cooperation between the evaporator assembly and the surface-cooler assembly of the computer room air conditioner.

[0064] The two-component (evaporator + surface-cooler) of the utility model is preferably designed in a reverse triangular structure and is assembled by two evaporator assemblies and two surface-cooler assemblies. Since the four assemblies are installed together, the weight is huge. The reverse triangular mode can effectively maintain the support of the two-component with large weight, strengthen the structure, and maintain a stable form during transportation.

[0065] In some embodiments,

[0066] When the evaporator assembly 1 is a plate structure and the surface-cooler assembly 2 is also a plate structure, the first evaporator assembly 11, the second evaporator assembly 12, the first surface-cooler assembly 21 and the second surface-cooler assembly 22 are all plate structures, the leeward face of the first surface-cooler assembly 21 is parallel to the windward face of the first surface-cooler assembly 21, the leeward face of the second surface-cooler assembly 22 is parallel to the windward face of the second surface-cooler assembly 22, the leeward face of the first evaporator assembly 11 is parallel to the windward face of the first evaporator assembly 11, the leeward face of the second evaporator assembly 12 is parallel to the windward face of the second evaporator assembly 12, and the leeward face of the first evaporator assembly 11 is opposite to and parallel to the windward face of the first surface-cooler assembly 21, and there is a gap with a size greater than 0 between the two, and the leeward face of the second evaporator assembly 12 is opposite to and parallel to the windward face of the second surface-cooler assembly 22, and there is a gap with a size greater than 0 between the two.

[0067] It is a further preferred structure of the first and second evaporator assemblies and the first and second surface cooler assemblies, that is, preferably, all are plate heat exchangers, the windward surface and the leeward surface of the evaporator assemblies are preferably parallel to each other, the windward surface and the leeward surface of the surface cooler assemblies are preferably parallel to each other, the leeward surface of the first evaporator assembly is opposite and parallel to the windward surface of the first surface cooler, and the two have a gap with a size greater than 0, which can effectively prevent the occurrence of wind blocking, and the leeward surface of the second evaporator assembly is opposite and parallel to the windward surface of the second surface cooler, and the two have a gap with a size greater than 0, which can effectively prevent the occurrence of wind blocking.

[0068] In some embodiments,

[0069] The air outlet of the accommodating space 3 is located at least at the bottom end thereof, so that the airflow entering the accommodating space 3 is discharged from the bottom end of the accommodating space;

[0070] The front door plate 5 is further arranged in the accommodating space 3, and the electric appliance box 4 is arranged on the outer side of the front door plate 5, that is, the electric appliance box 4 is away from the center position of the accommodating space 3 relative to the front door plate 5.

[0071] The air outlet of the accommodating space is preferably arranged at the bottom end thereof, so that the airflow is discharged through the air outlet at the bottom end after being cooled by the evaporator and / or the surface cooler and then entering the accommodating space to cool the electric appliance box. The front door plate (or front panel) is preferably arranged, so that the electric appliance box can be mounted on the front door plate and arranged in the accommodating space.

[0072] The front surface of the two-component part is preferably designed to have a position for mounting the electric appliance box 4 (which also belongs to the position of the accommodating space and is located at the front surface of the accommodating space), and the electric appliance box 4 is mounted on the front surface of the two-component part. The electric appliance box 4 is mounted in the space of the two-component part by inlaying, which effectively saves space. The electric appliance box 4 has sheet metal as a carrier, and the electrical elements are mounted on the sheet metal. The electrical elements generate heat, and the sheet metal is easy to conduct heat. The electric appliance box 4 is in contact with the front door plate 5 of the two-component part, and the two-component part simultaneously cools and protects the electric appliance box 4 to prevent the electrical elements from overheating. To prevent condensation caused by the low temperature of the front door plate 5 of the two-component part contacting with the hot air outside, a sponge needs to be added to the front panel of the two-component part.

[0073] The utility model further provides a kind of air conditioner, it includes the heat exchanger assembly of preceding description.

[0074] 1. The utility model discloses a surface cooler and evaporator are connected as a whole, to realize refrigerant refrigeration and frozen water refrigeration combination, solve the refrigerant refrigeration and frozen water refrigeration combination problem of computer lab air conditioner;

[0075] 2. The utility model discloses an evaporator assembly and surface cooler assembly between setting the gap of 15mm, to solve the problem of air blocking of the evaporator assembly and surface cooler assembly of computer room air conditioner.

[0076] 3. The utility model discloses the containing space between two components sets up the electric appliance box, to solve the problem of electric appliance box heat dissipation, and solve the problem of larger space.

[0077] 4. The utility model discloses the inverted triangle structure (preferably evaporator assembly is inside, and surface cooler assembly is outside) of optimization, to realize the stability of transportation process, solve the problem of unstable cooperation of evaporator assembly and surface cooler assembly of computer room air conditioner.

[0078] The utility model also provides a kind of control method of heat exchanger assembly as aforementioned, it includes:

[0079] judgment step, according to demand, whether refrigerated water refrigeration is mainly or refrigerant refrigeration is mainly or refrigerated water refrigeration and refrigerant refrigeration are simultaneously operated is judged;

[0080] Control step, when refrigerated water refrigeration is mainly required, control the surface cooler assembly 2 work, while control the evaporator assembly 1 does not work, when refrigerant refrigeration is mainly required, control the evaporator assembly 1 work, while control the surface cooler assembly 2 does not work, simultaneously control the frequency conversion compressor connected with the evaporator assembly 1 and adjust, when refrigerated water refrigeration and refrigerant refrigeration are simultaneously operated, control the evaporator assembly 1 and the surface cooler assembly 2 work simultaneously.

[0081] The two different refrigeration modes in the prior art use different structures, and it is difficult to simultaneously place them in one space during structural combination, but the utility model discloses a structure that connects the evaporator assembly and the surface cooler assembly into one, and can select whether to mainly use refrigerated water or refrigerant for refrigeration according to the need or the temperature of the refrigerated water, and when mainly using refrigerated water for refrigeration, the evaporator is closed, which can reduce the energy consumption required for refrigerant refrigeration under the condition of providing refrigeration, improve the energy efficiency of the system, and mainly use refrigerant for refrigeration when the refrigerated water temperature is too high to meet the refrigeration requirement, at which time the surface cooler is closed, refrigerant refrigeration can be used to meet the required cooling capacity and temperature in the room, and the energy efficiency and refrigeration performance can be simultaneously considered; and since the evaporator assembly is arranged at the upstream position of the surface cooler assembly along the air flow direction, the air first passes through the evaporator assembly and then passes through the surface cooler assembly, the evaporator can be closed when mainly using refrigerated water, the air passing through the evaporator is not refrigerated, and the air after passing through the evaporator enters the surface cooler and is cooled by the refrigerated water, so that the air temperature does not increase (if the air first passes through the surface cooler and then passes through the evaporator, the air is first cooled by the surface cooler, but when entering the evaporator, the heat exchange pipe temperature of the evaporator is higher than the air temperature after being cooled by the surface cooler, so that the air is heated unnecessarily, and the refrigeration effect is poor) ; and when mainly using refrigerant for refrigeration, the air is first cooled by the refrigerant in the evaporator, and when entering the surface cooler, the air can be heated by the heat exchanger, at which time the refrigerant flow or flow rate of the evaporator assembly is adjusted (by frequency adjustment of the variable frequency compressor), and the refrigeration capacity of the evaporator is increased, so that the air after passing through the surface cooler can meet the required temperature in the room, and the refrigeration effect is not poor; therefore, the evaporator is arranged at the upstream of the surface cooler along the air flow, and the evaporator can be adjusted (frequency adjustment of the variable frequency compressor) when mainly using refrigerant for refrigeration, so that the refrigeration effect of various refrigeration modes mainly using refrigerated water and refrigerant can be ensured, the refrigeration effect is not poor under the condition of simultaneously considering the energy efficiency and refrigeration performance, and the required refrigeration effect is ensured.

[0082] The evaporator assembly 1 of the utility model cools by refrigerant, i.e. refrigerant refrigeration. The surface cooler assembly 2 cools by refrigerated water. The refrigerant cooling and refrigerated water cooling are combined. The double refrigeration can greatly improve the refrigeration effect. And the two refrigeration modes can be refrigerated separately, i.e. the refrigeration mode can be switched to cope with different situations. At the same time, they can provide a standby refrigeration scheme for each other, when one refrigeration cycle cannot run, the other refrigeration mode can still ensure the refrigeration effect. For such a precise data center as a computer room, no refrigeration will have a huge side effect on the computer room, so the normal operation of the computer room can be greatly ensured, and the loss can be reduced.

[0083] The installation form of the two device components is that the middle two are surface condenser assemblies in a triangular form, and the outer two are evaporator assemblies 1 connected to the two sides of the surface condenser assemblies 2 respectively. When the unit mainly uses chilled water, the evaporator assemblies 1 are outside, and the surface condenser assemblies 2 are inside, the air first passes through the evaporator assemblies 1 and then passes through the surface condenser assemblies 2, so that the air is cooled and enters the air cavity for the first time to maximize the cooling effect. The evaporator assemblies 1 are circulated by the compressor compression refrigerant, and the surface condenser assemblies 2 are the chilled water circulation. When the chilled water is mainly used, the cold air should be sent out for the first time after passing through the surface condenser assemblies 2, if the evaporator assemblies 1 are inside and the surface condenser assemblies 2 are outside, the cold air will be reheated with the evaporator assemblies 1 at room temperature after passing through the surface condenser assemblies 2, so that the temperature rises, thereby causing the refrigeration effect to be poor. When the refrigerant is mainly used, although the cold air will be reheated with the surface condenser assemblies 2 at room temperature after passing through the evaporator assemblies 1, the refrigerant refrigeration has a frequency conversion compressor adjustment, and the refrigeration effect will not be poor.

[0084] The two device components have three operating conditions, which are that the evaporator assemblies 1 and the surface condenser assemblies 2 operate simultaneously, the evaporator assemblies 1 operate alone, and the surface condenser assemblies 2 operate alone. The first condition is that the two device components operate simultaneously, and the refrigeration effect is the largest. It is usually used in a refrigeration environment with high requirements and large cooling capacity. When only the evaporator assemblies 1 operate alone, it is usually used in a place with variable ambient temperature and high refrigeration requirements, and the compressor needs to be adjusted to control the ambient temperature. When only the surface condenser assemblies 2 operate alone, it is usually used in a place with relatively constant ambient temperature and fixed temperature cooling. Since the chilled water refrigeration only needs to control the water valve switch to achieve the refrigeration effect, and the environment in the machine room is stable under normal circumstances, the refrigeration requirement is low, and the chilled water refrigeration is usually used in the machine room, which can effectively reduce the cost.

[0085] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, without departing from the technical principle of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be regarded as the protection scope of the present application.

Claims

1. A heat exchanger assembly, characterized by: The heat exchanger assembly comprises: An evaporator assembly (1) and a surface cooler assembly (2), the heat exchange pipes of the evaporator assembly (1) are filled with refrigerant, so that the air can exchange heat with the refrigerant when passing through the evaporator assembly (1), the heat exchange pipes of the surface cooler assembly (2) are filled with chilled water, so that the air can exchange heat with the chilled water when passing through the surface cooler assembly (2), the evaporator assembly (1) and the surface cooler assembly (2) are connected as a whole, and the evaporator assembly (1) is located upstream of the surface cooler assembly (2) along the air flow direction; when refrigeration with chilled water is mainly used, the surface cooler assembly (2) works and the evaporator assembly (1) does not work, the air first passes through the evaporator assembly (1) and is not cooled, and then passes through the surface cooler assembly (2) and is cooled.

2. The heat exchanger assembly according to claim 1, wherein: when refrigeration with refrigerant is mainly used, the surface cooler assembly (2) does not work and the evaporator assembly (1) works, the air first passes through the evaporator assembly (1) and is cooled, and then passes through the surface cooler assembly (2) and is not cooled, and the flow or speed of the refrigerant flowing through the evaporator assembly (1) can be adjusted.

3. The heat exchanger assembly according to claim 1, wherein: the evaporator assembly (1) is of a plate structure, the surface cooler assembly (2) is also of a plate structure, and the evaporator assembly (1) and the surface cooler assembly (2) have a gap with a size greater than 0.

4. The heat exchanger assembly according to claim 3, wherein: the size of the gap is 15mm±5mm.

5. The heat exchanger assembly according to any one of claims 1-4, wherein: the evaporator assembly (1) is at least two, including a first evaporator assembly (11) and a second evaporator assembly (12), the surface cooler assembly (2) is also at least two, including a first surface cooler assembly (21) and a second surface cooler assembly (22), the first evaporator assembly (11) and the first surface cooler assembly (21) are assembled as a whole to form a first group of heat exchange assemblies; the second evaporator assembly (12) and the second surface cooler assembly (22) are assembled as a whole to form a second group of heat exchange assemblies; further comprising an electrical box (4), the first group of heat exchange assemblies and the second group of heat exchange assemblies are spaced apart to form a containing space (3) to accommodate the electrical box (4) therein, the first evaporator assembly (11) is away from the containing space (3) relative to the first surface cooler assembly (21), the second evaporator assembly (12) is away from the containing space (3) relative to the second surface cooler assembly (22), the air on one side of the first group of heat exchange assemblies enters the containing space (3) after flowing through the first evaporator assembly (11) and the first surface cooler assembly (21), and the air on one side of the second group of heat exchange assemblies enters the containing space (3) after flowing through the second evaporator assembly (12) and the second surface cooler assembly (22).

6. The heat exchanger assembly according to claim 5, wherein: The first surface condenser assembly (21) is opposite to the second surface condenser assembly (22) and the containing space (3) is arranged between the first surface condenser assembly (21) and the second surface condenser assembly (22). The distance between the first surface condenser assembly (21) and the second surface condenser assembly (22) gradually increases from top to bottom, so that the containing space (3) has a structure of small horizontal cross-sectional area at the top and large horizontal cross-sectional area at the bottom.

7. The heat exchanger assembly according to claim 6, characterized in that: The leeward side of the first surface condenser assembly (21) faces the containing space (3), and the leeward side of the second surface condenser assembly (22) also faces the containing space (3). The leeward side of the first surface condenser assembly (21) forms an angle of inclination with the horizontal plane, which is greater than 0 and less than 90°. The leeward side of the second surface condenser assembly (22) also forms an angle of inclination with the horizontal plane, which is greater than 0 and less than 90°. From bottom to top, the leeward side of the first surface condenser assembly (21) gradually extends towards the direction of the leeward side of the second surface condenser assembly (22), and the leeward side of the second surface condenser assembly (22) gradually extends towards the direction of the leeward side of the first surface condenser assembly (21), so that in the longitudinal section, the leeward side of the first surface condenser assembly (21) and the leeward side of the second surface condenser assembly (22) form a triangular or trapezoidal structure with small size at the top and large size at the bottom.

8. The heat exchanger assembly according to claim 5, characterized in that: When the evaporator assembly (1) is a plate structure and the surface condenser assembly (2) is also a plate structure, the first evaporator assembly (11), the second evaporator assembly (12), the first surface condenser assembly (21) and the second surface condenser assembly (22) are all plate structures. The leeward side of the first surface condenser assembly (21) is parallel to the windward side of the first surface condenser assembly (21). The leeward side of the second surface condenser assembly (22) is parallel to the windward side of the second surface condenser assembly (22). The leeward side of the first evaporator assembly (11) is parallel to the windward side of the first evaporator assembly (11). The leeward side of the second evaporator assembly (12) is parallel to the windward side of the second evaporator assembly (12). The leeward side of the first evaporator assembly (11) is opposite to and parallel to the windward side of the first surface condenser assembly (21), and there is a gap with a size greater than 0 between them. The leeward side of the second evaporator assembly (12) is opposite to and parallel to the windward side of the second surface condenser assembly (22), and there is a gap with a size greater than 0 between them.

9. The heat exchanger assembly according to claim 5, characterized in that: The outlet of the containing space (3) is located at least at the bottom end, so that the air flow entering the containing space (3) is discharged from the bottom end of the containing space; The containing space (3) is also provided with a front door panel (5), and the electric appliance box (4) is arranged in close contact with the front door panel (5) and located on the outer side of the front door panel (5), that is, the electric appliance box (4) is away from the central position of the containing space (3) relative to the front door panel (5).

10. An air conditioner characterized by comprising: The heat exchanger assembly of any one of claims 1-9.

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