Shopping cart washing apparatus
By designing a shopping cart cleaning device, which uses components such as a conveyor mechanism, nozzles, brushes, and ultraviolet lamps, the device achieves automated cleaning and disinfection of shopping carts, solving the problem of incomplete cleaning, reducing health risks, and improving cleaning efficiency.
Patent Information
- Application Number
- CN202620174647.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2036-02-05
AI Technical Summary
The current shopping carts are not thoroughly cleaned, which can easily lead to bacterial growth and cross-contamination. Furthermore, contaminants from fresh food may contaminate subsequent products, increasing health risks.
Design a shopping cart cleaning device, comprising a housing, a door, cleaning components, and a heating device. It utilizes components such as a conveying mechanism, nozzles, brushes, and ultraviolet lamps to achieve automatic cleaning and disinfection of the shopping cart, cleaning the wheels and body in separate sections, and employing a water circulation system and a dehumidifier to recycle and reuse cleaning wastewater.
It achieves automated cleaning and disinfection of shopping carts, avoiding cross-contamination during the cleaning process, ensuring cleaning effectiveness, and recycling cleaning wastewater, thus reducing health risks.
Smart Images

Figure CN224929004U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of shopping cart cleaning technology, specifically relating to a shopping cart cleaning device. Background Technology
[0002] Shopping carts are a common sight in supermarkets and shopping malls in our daily lives. They are mainly used for temporarily storing selected goods.
[0003] Due to high customer traffic and the manpower and resources required for cleaning and disinfection, many shopping carts cannot be cleaned and disinfected frequently and thoroughly. Some surveys have found that mold, coliform bacteria, and other bacteria may be detected on repeatedly used shopping baskets and carts, posing a risk of cross-contamination. Currently, shopping carts are generally not cleaned during use, and even when they are cleaned, it is only a wiping process. This can easily lead to shopping carts becoming a breeding ground for pathogens. Mold and coliform bacteria on the surface can easily cause digestive or respiratory diseases. Secondly, blood from fresh food, thawed liquids, and dirt brought by customers can directly contaminate the cart. If not thoroughly cleaned, these contaminants can then contaminate subsequently placed goods (especially ready-to-eat cooked food) and even the hands of other customers, increasing health risks.
[0004] To address the existing problems, we propose a shopping cart cleaning device.
[0005] The information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Utility Model Content
[0006] The purpose of this invention is to provide a shopping cart cleaning device to solve the problems mentioned in the background art.
[0007] On one hand, this disclosure provides an embodiment of a shopping cart cleaning device comprising:
[0008] The housing has a accommodating space, and the accommodating space has an inlet and an outlet that communicate with the outside.
[0009] The gate is located at the vehicle entrance and exit;
[0010] A cleaning assembly, disposed within the accommodating space, includes:
[0011] The conveying mechanism includes a first conveying mechanism and a second conveying mechanism, the distance between the first conveying mechanism and the second conveying mechanism being adjustable and lockable to transport shopping carts of different sizes;
[0012] The first nozzle is located on both sides of the conveyor mechanism to clean the wheels;
[0013] The second nozzle is located within the containment space to clean the vehicle body;
[0014] The first brush body is located on both sides of the conveyor mechanism to clean the wheels;
[0015] A heating device generates heat to dry the shopping cart.
[0016] As an optional implementation, the cleaning device also includes a traction mechanism located at the upper position of the accommodating space. The traction mechanism includes a flexible traction body and a hook. The traction mechanism has two states: in the first state, the flexible traction body is in a stretched state and the hook is hooked onto the shopping cart; in the second state, the flexible traction body is in a vertical free state and the hook is detached from the shopping cart.
[0017] As an alternative implementation, the cleaning device also includes a first ramp, one end of which is adjacent to the inlet end of the conveying mechanism, and the end of the first ramp closer to the conveying mechanism is higher than the other end of the first ramp.
[0018] As an alternative implementation, the cleaning device also includes a second ramp, one end of which is adjacent to the exit end of the conveyor mechanism, the end of the second ramp near the conveyor mechanism being higher than the other end of the second ramp, and the second ramp being provided with a stop to increase the resistance of the shopping cart wheels.
[0019] As an alternative implementation, the cleaning assembly also includes a second brush body disposed on both sides of the conveying mechanism to clean the body of the shopping cart.
[0020] As an alternative implementation, the cleaning assembly also includes a second brush body disposed above the conveying mechanism to clean the body of the shopping cart.
[0021] As an optional implementation, the second nozzle is disposed between the first conveying mechanism and the second conveying mechanism, and the outlet of the second nozzle faces upward.
[0022] As an alternative implementation, the storage space also includes an ultraviolet lamp to disinfect the shopping cart.
[0023] As an alternative implementation, the cleaning device also includes a circulating air duct and a dehumidifier, which dehumidifies the containment space through the circulating air duct while the cleaning device dries the shopping cart.
[0024] As an alternative implementation, the cleaning device includes a water circulation system having an inlet, an outlet, and a filter, through which water enters from the outlet into a first nozzle and a second nozzle to clean the shopping cart;
[0025] As an optional implementation, the cleaning device also includes a water storage tank into which cleaning wastewater enters. The water storage tank is connected to a filter device, and after passing through the filter device, the cleaning wastewater enters the first and second nozzles from the outlet to clean the shopping cart.
[0026] As an optional implementation, the cleaning device includes a dehumidifier and a condensate delivery pipe. The dehumidifier generates condensate after dehumidifying the cleaning device, and the condensate enters the water circulation system through the condensate delivery pipe.
[0027] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages.
[0028] The technical solution provided by the embodiments of this application brings at least the following beneficial effects: This application realizes automatic cleaning of the body and wheels of the shopping cart, and can also divide the storage space into multiple spaces, with each space cleaning the wheels and body separately, avoiding cross-contamination of shopping carts during the cleaning process, and can also disinfect the shopping cart after cleaning.
[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0030] Figure 1 This is a cross-sectional view of the first embodiment of the present utility model;
[0031] Figure 2 This is a three-dimensional structural diagram of the first form of the cleaning component of this utility model;
[0032] Figure 3 This is a cross-sectional view of the second embodiment of the present invention;
[0033] Figure 4 This is a top view of the second form of the cleaning component of this utility model;
[0034] Figure 5 This is a cross-sectional view of the third embodiment of this utility model;
[0035] Figure 6 This is a cross-sectional view of the fourth embodiment of this utility model;
[0036] Figure 7 This is a cross-sectional view of the fifth embodiment of the present utility model;
[0037] Figure 8 This is a schematic diagram of the 3D structure of a shopping cart.
[0038] In the picture:
[0039] 1-Housing; 11-Air inlet; 12-Air outlet; 21-Conveying mechanism; 211-First conveying mechanism; 212-Second conveying mechanism; 22-First nozzle; 23-Second nozzle; 24-First brush body; 25-Second brush body; 26-Support body; 27-Positive and negative lead screws; 31-Vehicle inlet; 32-Vehicle outlet; 41-Traction body; 42-Hook body; 51-First ramp; 52-Second ramp; 53-Block; 6-Ultraviolet lamp; 7-Filter device; 8-Dehumidifier. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] like Figure 1 and Figure 2 As shown, the shopping cart cleaning device includes a housing 1, a first ramp 51, a second ramp 52, a door, a cleaning assembly, a traction assembly, and a heating device, wherein:
[0042] The housing 1 has a accommodating space, and the accommodating space has an inlet 31 and an outlet 32 that communicate with the outside. The housing also has an air inlet 11 and an air outlet 12.
[0043] The gates are located at the vehicle entrance 31 and the vehicle exit 32.
[0044] Specifically, the door can be composed of multiple plastic panels, each fixed to the top of the storage space. When the shopping cart enters the storage space, the plastic panels separate to the sides under the push of the shopping cart. The door can also be an automatic roller shutter door.
[0045] One end of the first ramp 51 is adjacent to the inlet end of the conveying mechanism 21, and the end of the first ramp 51 closer to the conveying mechanism 21 is higher than the other end of the first ramp 51.
[0046] One end of the second ramp 52 is adjacent to the exit end of the conveyor mechanism 21. The end of the second ramp 52 closer to the conveyor mechanism 21 is higher than the other end of the second ramp 52. The second ramp is equipped with a stop to increase the resistance of the shopping cart wheels.
[0047] Specifically, the first and second ramps have guardrails on both sides to restrict the shopping cart's path and prevent it from veering off course.
[0048] Specifically, the blocking components of the second ramp can be several dot-shaped rubber pads, several transverse rubber strips, and several transverse speed bumps. A stop 53 is also installed on one side of the second ramp. The stop 53 can be an automatic lifting type and is wedge-shaped. When the shopping cart leaves the second ramp, the moving speed of the shopping cart is slowed down or even stopped by the action of the stop 53. The operator operates the stop 53 to lower it and push the shopping cart to the storage area.
[0049] The cleaning assembly is located within the accommodating space. The cleaning assembly includes a conveying mechanism 21, a first nozzle 22, a second nozzle 23, and a first brush body 24. The conveying mechanism 21 includes a first conveying mechanism 211 and a second conveying mechanism 212. The distance between the first conveying mechanism 211 and the second conveying mechanism 212 is adjustable and lockable to transport shopping carts of different sizes. The first nozzle 22 is located on both sides of the conveying mechanism 21 to clean the wheels. The second nozzle 23 is located within the accommodating space to clean the cart body. The first brush body 24 is located on both sides of the conveying mechanism 21 to clean the wheels.
[0050] Specifically, both the first nozzle 22 and the second nozzle 23 can be high-pressure fan-shaped nozzles or high-pressure plate nozzles.
[0051] Specifically, the first nozzle 22 is located on both sides of the conveying mechanism, and the second nozzle is also located on both sides of the conveying mechanism. When cleaning the shopping cart, both the first nozzle 22 and the second nozzle 23 face the shopping cart. The first nozzle and the second nozzle can also be located on corresponding tracks, and the first nozzle and the second nozzle move along the tracks as the shopping cart moves.
[0052] The traction mechanism is located at one end of the accommodating space near the vehicle entrance, specifically in the upper middle position of the accommodating space. The traction mechanism includes two states. In the first state, the flexible traction body 41 is in a stretched state and the hook 42 hooks the shopping cart. In the second state, the flexible traction body 41 is in a free state and the hook 42 is detached from the shopping cart.
[0053] Specifically, the traction body 41 can be a rope or a flexible traction body made of a flexible material.
[0054] Specifically, the hook 42 includes a first component and a second component, which intersect and form an inner angle of not less than 90°. Specifically, the traction mechanism adopts a conventional electric drive method. The traction mechanism includes a power component, a pressure sensor, a reduction mechanism, a brake, and a reel. The power component drives the transmission reduction mechanism to control the rotation of the reel. One end of the flexible traction body 41 is connected to the reel, and the hook 42 is connected to the other end of the flexible traction body 41. The pressure sensor can detect the tension of the flexible traction body 41 and thus determine whether the shopping cart has fully reached the conveyor mechanism 21. When the shopping cart has fully reached the conveyor mechanism 21, the traction mechanism stops winding the flexible traction body 41. At this time, the flexible traction body 41 is in a vertical free state because the inner angle between the first component and the second component is greater than 90°. At this time, the hook 42 disengages from the shopping cart.
[0055] The heating device generates heat, and air enters the storage space through the air inlet. The cleaning device also includes a dehumidifier 8 and a condensate delivery pipe 81. The dehumidifier 8 is located in the air circulation duct. After the cleaning device dries the shopping cart, the dehumidifier dehumidifies the storage space. The hot air in the storage space enters the air circulation duct through the air outlet 12 and generates condensate under the action of the dehumidifier 8. The condensate enters the water circulation system through the condensate delivery pipe 81, achieving secondary recycling of the condensate.
[0056] Specifically, the heating device can be installed within the accommodating space, with the generated hot air directly introduced into the accommodating space. Alternatively, the heating device can be installed outside the accommodating space, with the generated hot air introduced into an air circulation duct near the air inlet 11, and then blown into the accommodating space by a fan from the air inlet 11. The heating device can be a resistance heater or an electromagnetic induction heater.
[0057] The cleaning device includes a water circulation system with an inlet, an outlet and a filter 7. Water enters from the outlet into the first nozzle 22 and the second nozzle 23 through the water circulation system to clean the shopping cart.
[0058] The cleaning device also includes a water storage tank. Cleaning wastewater enters the water storage tank, which is connected to the filter device 7. After passing through the filter device 7, the cleaning wastewater enters the first nozzle 22 and the second nozzle 23 from the outlet to clean the shopping cart.
[0059] Specifically, the bottom surface of the housing 1 is inclined, and there is a through hole on the bottom surface of the housing 1. The through hole is located on the shorter side of the housing 1, so that after the cleaning wastewater falls onto the bottom surface of the housing 1, the wastewater enters the water storage tank through the through hole. Alternatively, a water pump can be installed to pump the wastewater into the water storage tank. When the wastewater falls into the water storage tank, impurities such as dust will settle to the bottom of the water storage tank. In addition, a filter device 7 has a water supply pipe inserted into the water storage tank (the end of the water supply pipe is kept in the middle of the water storage tank). A water pump draws the cleaning wastewater from the water storage tank into the filter device 7. The filter device 7 performs secondary treatment on the cleaning wastewater before sending it to the water circulation system. Then, this treated water is transported in the water circulation system and enters the first nozzle 22 and the second nozzle 23 from the outlet for cleaning.
[0060] Specifically, the conveying mechanism 21 includes symmetrically arranged support bodies 26 for supporting the first conveying mechanism 211 and the second conveying mechanism 212. The conveying mechanism also includes positive and negative screws 27 that are threadedly engaged with the support bodies 26. The positive and negative screws are provided with handles, and the distance between the first conveying mechanism 211 and the second conveying mechanism 212 can be adjusted by shaking the handles to accommodate shopping carts of different sizes.
[0061] Specifically, the first nozzle 22, the second nozzle 23, the first brush body 24, and the second brush body 25 are all mounted on the support body 26. The specific installation method is that the second brush body 25 can be indirectly mounted on the support body 26 through the intermediate component, or it can be directly connected.
[0062] Specifically, the outlets of the first nozzle 22 and the second nozzle 23 are opposite each other. When the shopping cart passes by, water is sprayed from the first nozzle 22 and the second nozzle 23 to clean the shopping cart. The first brush body 24 and the second brush body 25 are fixed or can be rotating. If the first brush body 24 is rotating, the first brush body 24 includes a shaft, a brush head and a ball bearing. During the transportation of the shopping cart by the first conveyor belt and the second conveyor belt, the first brush body 24 rotates because it is in contact with the shopping cart.
[0063] The storage space also includes an ultraviolet lamp 6 for disinfecting the shopping cart.
[0064] like Figure 3 and 4 As shown, the cleaning assembly also includes a second brush body 25, which is disposed on both sides of the conveying mechanism 21 to clean the body of the shopping cart. A second nozzle 23 is disposed between the first conveying mechanism 211 and the second conveying mechanism 212, and the outlet of the second nozzle 23 faces upward. The upward-facing outlet allows the second nozzle 23 to face the bottom of the shopping cart or the inner cavity of the body, and the upward-facing outlet of the second nozzle 23 ensures that the second brush body 25 does not obstruct the water spray when the second nozzle 23 is cleaning the shopping cart.
[0065] Specifically, the second brush 25 can also be positioned above the conveying mechanism 21 to clean the body of the shopping cart.
[0066] like Figure 5 As shown, the housing 1 can be further divided into a first housing space and a second housing space. There is an intermediate door between the first housing space and the second housing space. The intermediate door is composed of multiple plastic panels. The top of each plastic panel is fixed to the top of the housing space. When the shopping cart passes through the intermediate door from the first housing space, the adjacent plastic panels are separated to both sides under the push of the shopping cart while the conveyor mechanism 21 transports the shopping cart. The shopping cart can then enter the second housing space. The intermediate door can prevent moisture in the first housing space from quickly entering the second housing space. The intermediate door can also be an automatic roller shutter door.
[0067] Specifically, the cleaning assembly 2, the traction mechanism, a set of conveying mechanisms, and the air outlet 12 are in the first accommodating space, while the ultraviolet lamp 6 and the air inlet 11 are in the second accommodating space. The second accommodating space also contains a set of conveying mechanisms; the first conveying mechanism 211 and the second conveying mechanism 212 in the first accommodating space transport the shopping cart to the second accommodating space to complete the drying and disinfection process.
[0068] More specifically, each conveyor mechanism is interconnected underneath, allowing for air circulation within the cleaning device.
[0069] like Figure 6 As shown, the accommodating space of the shell 1 can be further divided into a first accommodating space, a second accommodating space and a third accommodating space. There is an intermediate door between the first accommodating space and the second accommodating space, and there is also an intermediate door between the second accommodating space and the third accommodating space.
[0070] More specifically, the first nozzle 22, the first brush body 24, the traction mechanism, a set of conveying mechanisms, and the air outlet 12 are located in the first accommodating space to clean the wheels and the body of the shopping cart. The second nozzle 23 and the set of conveying mechanisms are located in the second accommodating space to clean the body of the shopping cart. The ultraviolet lamp 6, the air inlet 11, and the set of conveying mechanisms are located in the third accommodating space to dry and disinfect the cleaned shopping cart. This embodiment can clean the wheels and the body of the shopping cart separately, avoiding cross-contamination of contaminants on the wheels and the body when the first and second nozzles spray simultaneously.
[0071] like Figure 7 As shown, with Figure 6 The embodiment differs in that a second brush body 25 is also provided within the first accommodating space, and the second brush body 25 is installed on both sides of the conveying mechanism within the first accommodating space. The second brush body 25 is mounted on a base and can rotate on the base under motor control. A track 251 is also provided within the first accommodating space, and the base can slide on the track under electronic control. A second nozzle within the second accommodating space rinses the shopping cart.
[0072] Working principle and usage process of this utility model:
[0073] Adjust the distance between the first conveyor mechanism 211 and the second conveyor mechanism 212 to a suitable distance using the positive and negative lead screws 27. Send the shopping cart onto the first ramp, hold the hook of the traction mechanism and hook the last shopping cart, then start the traction mechanism. Under the traction of the traction mechanism, the shopping cart enters the receiving space of the cleaning device. The front and rear crossbars at the bottom of the shopping cart rest on the conveyor mechanism 21, with the cart wheels on both sides of the conveyor mechanism 21. Turn on the water circulation system; water sprays from the first nozzle 22 to clean the wheels, and the first brush 24 cleans impurities from the wheels. Water also sprays from the second nozzle 23 to clean the cart body. If the cleaning device has a second brush 25, during the cleaning process, the second brush 25 works in conjunction with the second nozzle 23 to clean the cart body. After cleaning, turn off the water circulation system. Turn on the dehumidifier 8, then turn on the heating device to generate hot air. Air enters the receiving space through the air inlet 11. Turn on the ultraviolet lamp 6 to disinfect the shopping cart with ultraviolet light, completing dehumidification, drying, and disinfection.
[0074] After drying and disinfection are completed, the equipment prompts the cleaning staff that the shopping cart is clean. The conveyor then transports the shopping cart to the second ramp. The shopping cart slows down and stops under the action of the blocking and deflecting components. The cleaning staff then receive the cleaned shopping cart and places it in the storage area.
[0075] If the cleaning device has a first containment space and a second containment space, the shopping cart is cleaned in the first containment space. After cleaning, the shopping cart is transported to the second containment space by the conveyor mechanism 2, where it is dried and disinfected.
[0076] If the cleaning device has a first compartment, a second compartment, and a third compartment, the wheels and body of the shopping cart are cleaned in the first compartment. After the shopping cart is cleaned, it is transported to the second compartment via a conveyor mechanism, where the second nozzle 23 sprays water to rinse the shopping cart. After the shopping cart is completely cleaned, it is transported to the third compartment via a conveyor mechanism, where it is dried and disinfected.
[0077] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
[0078] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0079] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
Claims
1. A shopping cart cleaning device, characterized in that, include: The housing has an accommodating space, and the accommodating space has an inlet and an outlet communicating with the outside; A cleaning assembly is disposed within the accommodating space, the cleaning assembly comprising: The conveying mechanism includes a first conveying mechanism and a second conveying mechanism, the distance between the first conveying mechanism and the second conveying mechanism being adjustable and lockable to transport shopping carts of different sizes; The first nozzle is located on both sides of the conveying mechanism to clean the wheels; The second nozzle is located within the accommodating space to clean the vehicle body; The first brush body is disposed on both sides of the conveying mechanism to clean the wheels; Doors are respectively located at the vehicle entrance and the vehicle exit; A heating device generates heat to dry the shopping cart.
2. The shopping cart cleaning device according to claim 1, characterized in that, The cleaning device also includes a traction mechanism located at one end of the accommodating space near the vehicle inlet. The traction mechanism includes a flexible traction body and a hook. The traction mechanism has two states: in the first state, the flexible traction body is in a stretched state and the hook is hooked onto the shopping cart; in the second state, the flexible traction body is in a vertical free state and the hook is detached from the shopping cart.
3. The shopping cart cleaning device according to claim 1, characterized in that, The cleaning device also includes a first ramp, one end of which is adjacent to the inlet end of the conveying mechanism, and the end of the first ramp closer to the conveying mechanism is higher than the other end of the first ramp.
4. The shopping cart cleaning device according to claim 1, characterized in that, The cleaning device also includes a second ramp, one end of which is adjacent to the exit end of the conveyor mechanism. The end of the second ramp closer to the conveyor mechanism is higher than the other end of the second ramp. The second ramp is provided with a stop to increase the resistance of the shopping cart wheels.
5. The shopping cart cleaning device according to claim 1, characterized in that, The cleaning assembly also includes a second brush body, which is disposed on both sides or above the conveying mechanism to clean the body of the shopping cart.
6. The shopping cart cleaning device according to claim 5, characterized in that, The second nozzle is located between the first conveying mechanism and the second conveying mechanism, and the outlet of the second nozzle faces upward.
7. The shopping cart cleaning device according to claim 1, characterized in that, The storage space also includes ultraviolet lamps to disinfect the shopping cart.
8. The shopping cart cleaning device according to claim 1, characterized in that, The cleaning device includes a water circulation system with an inlet, an outlet, and a filter. Water enters the first and second nozzles from the outlet through the water circulation system to clean the shopping cart.
9. The shopping cart cleaning device according to claim 8, characterized in that, The cleaning device also includes a water storage tank into which cleaning wastewater enters. The water storage tank is connected to the filter device. After passing through the filter device, the cleaning wastewater enters the first nozzle and the second nozzle from the outlet to clean the shopping cart.
10. The shopping cart cleaning device according to claim 8, characterized in that, The cleaning device includes a dehumidifier and a condensate delivery pipe. The dehumidifier dehumidifies the cleaning device and produces condensate, which enters the water circulation system through the condensate delivery pipe.
