A double-body hot and cold air curtain cabinet and hot and cold control method

Abstract

This invention discloses a dual-unit hot and cold air curtain cabinet, comprising a cabinet body; the cabinet body is internally divided into a refrigeration chamber and a heating chamber; a refrigeration air duct is provided at the rear of the refrigeration chamber, with a refrigeration air inlet at the lower end and a refrigeration air return outlet at the upper end; a first fan is installed inside the refrigeration air duct; a heating air duct is provided at the rear of the heating chamber, with a heating air inlet at the lower end and a heating air return outlet at the upper end; a second fan is installed inside the heating air duct; a compressor is installed in the mounting cavity; an evaporator is installed inside the refrigeration air duct; a condenser is installed inside the heating air duct; the compressor outlet is connected to the condenser inlet, the condenser outlet is connected to the evaporator inlet, and the evaporator outlet is connected to the compressor inlet. This invention also discloses a method for controlling the hot and cold air of the dual-unit hot and cold air curtain cabinet. This invention sets up a refrigeration chamber and a heating chamber within a single cabinet, and by placing the condenser inside the heating air duct of the heating chamber, the heating chamber can simultaneously cool the refrigeration chamber and heat the heating chamber, thus reducing energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of air curtain cabinets, and in particular relates to a double-body cold and hot air curtain cabinet and a cold and hot control method. Background Art

[0002] Air curtain cabinets are a type of storage equipment commonly used in supermarkets or convenience stores. Existing air curtain cabinets are all single-body cooling or heating structures.

[0003] However, most supermarkets or convenience stores usually need two types of air curtain cabinets: refrigeration and heating. The refrigeration air curtain cabinet is used to place yogurt, milk, fruit and other products that need to be refrigerated, and the heating air curtain cabinet is used to place cooked food products that need to be kept warm.

[0004] Therefore, when both cooling and heating air curtain cabinets are needed, supermarkets or convenience stores need to purchase two types of air curtain cabinets, each of which performs cooling or heating, resulting in high energy consumption.

[0005] Based on the above problems, the present application proposes a double-body cold and hot air curtain cabinet, in which a refrigeration box and a heating box are arranged in one cabinet. By placing the condenser of the refrigeration system in the refrigeration box in the air duct of the heating box, the refrigeration box can be cooled while the heating box is heated. Then, the refrigeration box can be cooled and the heating box can be heated at the same time through a set of refrigeration system. Compared with using two air curtain cabinets, energy consumption is reduced. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a double-body hot and cold air curtain cabinet and a hot and cold control method.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] A double-body cold and hot air curtain cabinet, comprising a cabinet body;

[0009] The internal compartment of the cabinet is a refrigeration box located on the left and a heating box located on the right; the lower part of the refrigeration box and the heating box is an installation cavity;

[0010] A refrigeration air duct is arranged at the rear of the refrigeration box, a refrigeration air inlet connected to the inner cavity of the refrigeration box is arranged at the lower end of the refrigeration air duct, and a refrigeration air return port connected to the inner cavity of the refrigeration box is arranged at the upper end of the refrigeration air duct; a first fan is arranged in the refrigeration air duct corresponding to the refrigeration air inlet;

[0011] A heating air duct is provided at the rear of the heating box, a heating air inlet connected to the inner cavity of the heating box is provided at the lower end of the heating air duct, and a heating air return port connected to the inner cavity of the heating box is provided at the upper end of the heating air duct; a second fan is provided in the heating air duct corresponding to the heating air inlet;

[0012] A compressor is arranged in the installation cavity; an evaporator is arranged in the cooling air duct above the first fan; and a condenser is arranged in the heating air duct above the second fan;

[0013] The outlet of the compressor is connected to the inlet of the condenser through a pipeline, the outlet of the condenser is connected to the inlet of the evaporator through a pipeline, and the outlet of the evaporator is connected to the inlet of the compressor through a pipeline.

[0014] Preferably, an expansion valve is provided on the pipeline between the outlet of the condenser and the inlet of the evaporator.

[0015] Preferably, the evaporator is a microchannel evaporator or a plate and tube evaporator.

[0016] Preferably, the first fan and the second fan are both centrifugal fans.

[0017] Preferably, a first temperature sensor is provided in the refrigeration box.

[0018] Preferably, a second temperature sensor is provided in the heating box.

[0019] Preferably, the compressor, the first fan, the second fan, the first temperature sensor, and the second temperature sensor are all connected to a controller.

[0020] Preferably, an electric heating wire is provided in the heating air duct.

[0021] Preferably, the electric heating wire is connected to a controller.

[0022] The present invention also provides a method for controlling the heating and cooling of a double-body heating and cooling air curtain cabinet.

[0023] A method for controlling the heating and cooling of a double-body hot and cold air curtain cabinet is implemented based on the double-body hot and cold air curtain cabinet. The method for controlling the heating and cooling is as follows:

[0024] The controller controls the compressor to start, realizing the refrigeration of the refrigeration box and the heating of the heating box;

[0025] The first temperature sensor detects the temperature in the refrigeration box and transmits the temperature of the refrigeration box to the controller;

[0026] The second temperature sensor detects the temperature in the heating box and transmits the temperature of the heating box to the controller;

[0027] When the temperature of the refrigeration box detected by the first temperature sensor reaches the set refrigeration temperature of the refrigeration box, the controller controls the compressor to stop; otherwise, the compressor continues to operate;

[0028] When the heating box temperature detected by the second temperature sensor is lower than the set heating temperature of the heating box and the compressor stops, the controller controls the motor hot wire to heat to compensate for the temperature in the heating box until the heating box temperature reaches the set heating temperature of the heating box.

[0029] The beneficial effects of the present invention are:

[0030] (1) The present invention arranges a refrigeration box and a heating box in a cabinet, and places the condenser of the refrigeration system in the refrigeration box in the heating air duct of the heating box, thereby achieving cooling of the refrigeration box and heating of the heating box at the same time. Thus, the refrigeration of the refrigeration box and the heating of the heating box are achieved simultaneously through a set of refrigeration systems, thereby reducing energy consumption compared with using two air curtain cabinets.

[0031] (2) The electric heating wire is arranged in the heating air duct of the present invention. When the compressor stops and the temperature in the heating box does not reach the set heating temperature of the heating box, the controller controls the electric heating wire to start heating to compensate for the temperature in the heating box until the set heating temperature in the heating box is reached. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0033] Figure 1 It is a structural schematic diagram of a double-body hot and cold air curtain cabinet of the present invention;

[0034] in:

[0035] 1-cabinet, 2-refrigeration box, 3-heating box, 4-installation cavity, 5-refrigeration air duct, 501-refrigeration air inlet, 502-refrigeration return air inlet, 6-first fan, 7-heating air duct, 701-heating air inlet, 702-heating return air inlet, 8-second fan, 9-compressor, 10-evaporator, 11-condenser, 12-expansion valve, 13-first temperature sensor, 14-second temperature sensor, 15-electric heating wire. DETAILED DESCRIPTION

[0036] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0039] In the present invention, terms such as "connected" and "connection" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meaning of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0040] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0041] Embodiment 1:

[0042] like Figure 1 As shown, a double-body hot and cold air curtain cabinet comprises a cabinet body 1;

[0043] The cabinet 1 is internally divided into a refrigeration box 2 on the left and a heating box 3 on the right; the lower parts of the refrigeration box 2 and the heating box 3 are installation chambers 4;

[0044] A refrigeration air duct 5 is provided at the rear of the refrigeration box 2, a refrigeration air inlet 501 communicating with the inner cavity of the refrigeration box 2 is provided at the lower end of the refrigeration air duct 5, and a refrigeration air return port 502 communicating with the inner cavity of the refrigeration box 2 is provided at the upper end of the refrigeration air duct 5; a first fan 6 is provided in the refrigeration air duct 5 corresponding to the refrigeration air inlet 501;

[0045] The rear part of the heating box 3 is provided with a heating air duct 7, the lower end of the heating air duct 7 is provided with a heating air inlet 701 connected to the inner cavity of the heating box 3, and the upper end of the heating air duct 7 is provided with a heating air return port 702 connected to the inner cavity of the heating box 3; a second fan 8 is provided in the heating air duct 7 corresponding to the heating air inlet 701;

[0046] A compressor 9 is arranged in the installation cavity 4; an evaporator 10 is arranged in the cooling air duct 5 above the first fan 6; a condenser 11 is arranged in the heating air duct 7 above the second fan 8;

[0047] The outlet of the compressor 9 is connected to the inlet of the condenser 11 through a pipeline, the outlet of the condenser 11 is connected to the inlet of the evaporator 10 through a pipeline, and the outlet of the evaporator 10 is connected to the inlet of the compressor 9 through a pipeline.

[0048] Preferably, an expansion valve 12 is provided on the pipeline between the outlet of the condenser 11 and the inlet of the evaporator 10 .

[0049] Preferably, the evaporator 10 is a microchannel evaporator or a plate-and-tube evaporator.

[0050] Preferably, the first fan 6 and the second fan 8 are both centrifugal fans.

[0051] Preferably, a first temperature sensor 13 is provided in the refrigeration box 2 for detecting the temperature in the refrigeration box 2 .

[0052] Preferably, a second temperature sensor 14 is provided in the heating box 3 for detecting the temperature in the heating box 3 .

[0053] Preferably, the compressor 9, the first fan 6, the second fan 8, the first temperature sensor 13, and the second temperature sensor 14 are all connected to a controller.

[0054] The air curtain cabinet of the present application is controlled by a controller. The first temperature sensor 13 and the second temperature sensor 14 detect the temperature and transmit it to the controller. The controller controls the start and stop of the first fan 6 and the second fan 8 and the start and stop of the compressor 9 according to the received temperature signal.

[0055] In Example 1, the compressor 9, the condenser 11, the expansion valve 12, and the evaporator 10 constitute the refrigeration system of the refrigeration box 2: the refrigerant enters the compressor 9, the compressor 9 increases the gas pressure of the refrigerant, creating a liquefaction condition, condenses and liquefies when passing through the condenser 11 to release heat, and then boils and vaporizes when passing through the evaporator 10, absorbing the heat of the air entering the refrigeration air duct 5 from the inner cavity of the refrigeration box 2 introduced by the first fan 6, and the air after absorbing the heat returns to the refrigeration box 2 through the refrigeration return air port 502, thereby realizing the refrigeration of the refrigeration box 2; and in the process of refrigeration of the refrigeration box 2, the refrigerant in the condenser 11 in the heating air duct 7 condenses and liquefies to release heat, and the released heat is absorbed by the air entering the heating air duct 7 from the inner cavity of the heating box 3 introduced by the second fan 8, and the air after absorbing the heat returns to the heating box 3 through the heating return air port 702, thereby realizing the heating of the heating box 3.

[0056] Therefore, in the present application, the refrigeration of the refrigeration box 2 and the heating of the heating box 3 are simultaneously achieved through a set of refrigeration system, which reduces energy consumption compared with the use of two air curtain cabinets.

[0057] Embodiment 2:

[0058] On the basis of Example 1, an electric heating wire 15 is arranged in the heating air duct 7 .

[0059] Preferably, the electric heating wire 15 is connected to a controller.

[0060] In Example 2, when the compressor 9 stops and the temperature in the heating box 3 does not reach the set heating temperature of the heating box, the controller controls the electric heating wire 15 to start heating to compensate for the temperature in the heating box 3 until the set heating temperature in the heating box 3 is reached.

[0061] Embodiment 3:

[0062] A method for controlling the heating and cooling of a double-body hot and cold air curtain cabinet is implemented based on the double-body hot and cold air curtain cabinet in Example 2. The method for controlling the heating and cooling is as follows:

[0063] The controller controls the compressor 9 to start, so as to realize the refrigeration of the refrigeration box 2 and the heating of the heating box 3;

[0064] The first temperature sensor 13 detects the temperature inside the refrigeration box 2 and transmits the refrigeration box temperature to the controller;

[0065] The second temperature sensor 14 detects the temperature in the heating box 3 and transmits the heating box temperature to the controller;

[0066] When the temperature of the refrigeration box detected by the first temperature sensor 13 reaches the set refrigeration temperature of the refrigeration box, the controller controls the compressor 9 to stop operating; otherwise, the compressor 9 continues to operate;

[0067] When the heating box temperature detected by the second temperature sensor 14 is lower than the set heating temperature of the heating box and the compressor 9 stops operating, the controller controls the motor heating wire 15 to heat to compensate for the temperature in the heating box 3 until the heating box temperature reaches the set heating temperature of the heating box.

[0068] In the present application, when the compressor 9 is running, the first thing that can be reached is the set refrigeration temperature of the refrigeration box 2. When the temperature of the refrigeration box 2 reaches the set refrigeration temperature, the temperature of the heating box 3 has two situations:

[0069] The first is that the set heating temperature of the heating box 3 is reached. In this case, the compressor 9 stops operating, and the refrigeration box 2 and the heating box 3 meet their respective cooling and heating requirements;

[0070] The second is that the heating temperature is lower than the set heating temperature of the heating box 3. In this case, the compressor 9 is still stopped. At this time, the controller controls the electric heating wire 15 to heat to compensate for the temperature in the heating box 3 until the set heating temperature in the heating box 3 is reached.

[0071] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the protection scope of the present invention.

Claims

1. A double-body hot and cold air curtain cabinet, comprising a cabinet body; characterized in that: The internal compartment of the cabinet is a refrigeration box located on the left and a heating box located on the right; the lower part of the refrigeration box and the heating box is an installation cavity; A refrigeration air duct is arranged at the rear of the refrigeration box, a refrigeration air inlet connected to the inner cavity of the refrigeration box is arranged at the lower end of the refrigeration air duct, and a refrigeration air return port connected to the inner cavity of the refrigeration box is arranged at the upper end of the refrigeration air duct; a first fan is arranged in the refrigeration air duct corresponding to the refrigeration air inlet; A heating air duct is provided at the rear of the heating box, a heating air inlet connected to the inner cavity of the heating box is provided at the lower end of the heating air duct, and a heating air return port connected to the inner cavity of the heating box is provided at the upper end of the heating air duct; a second fan is provided in the heating air duct corresponding to the heating air inlet; A compressor is arranged in the installation cavity; an evaporator is arranged in the cooling air duct above the first fan; and a condenser is arranged in the heating air duct above the second fan; The outlet of the compressor is connected to the inlet of the condenser through a pipeline, the outlet of the condenser is connected to the inlet of the evaporator through a pipeline, and the outlet of the evaporator is connected to the inlet of the compressor through a pipeline; An expansion valve is arranged on the pipeline between the outlet of the condenser and the inlet of the evaporator; The evaporator is a microchannel evaporator or a plate-and-tube evaporator.

2. The double-body hot and cold air curtain cabinet according to claim 1, characterized in that: The first fan and the second fan are both centrifugal fans.

3. The double-body hot and cold air curtain cabinet according to claim 1, characterized in that: A first temperature sensor is arranged in the refrigeration box.

4. The double-body hot and cold air curtain cabinet according to claim 3, characterized in that: A second temperature sensor is arranged in the heating box.

5. The double-body hot and cold air curtain cabinet according to claim 4, characterized in that: The compressor, the first fan, the second fan, the first temperature sensor and the second temperature sensor are all connected to the controller.

6. The double-body hot and cold air curtain cabinet according to claim 5, characterized in that: An electric heating wire is arranged in the heating air duct.

7. The double-body hot and cold air curtain cabinet according to claim 6, characterized in that: The electric heating wire is connected to the controller.

8. A method for controlling the heating and cooling of a double-body hot and cold air curtain cabinet, implemented based on the double-body hot and cold air curtain cabinet according to claim 7, characterized in that: The hot and cold control method is: The controller controls the compressor to start, realizing the refrigeration of the refrigeration box and the heating of the heating box; The first temperature sensor detects the temperature in the refrigeration box and transmits the temperature of the refrigeration box to the controller; The second temperature sensor detects the temperature in the heating box and transmits the temperature of the heating box to the controller; When the temperature of the refrigeration box detected by the first temperature sensor reaches the set refrigeration temperature of the refrigeration box, the controller controls the compressor to stop; otherwise, the compressor continues to operate; When the heating box temperature detected by the second temperature sensor is lower than the set heating temperature of the heating box and the compressor stops, the controller controls the motor hot wire to heat to compensate for the temperature in the heating box until the heating box temperature reaches the set heating temperature of the heating box.

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